Textile Engineering
Textile calculators
618 interactive tools for spinning, weaving, knitting, wet processing, finishing, garmenting and quality control. Every one shows its formula, a worked example and the standards it follows.
Professional tools
Full costing sheets, booking schedules and project appraisals. Enter your own figures and see the headline result before you buy.
- Air, Sea or Split: Late Shipment Expedite Sheet Worth of Choosing Style by Style
- Brownfield Expansion: What the Next Increment Costs Shared Plant the Proposal Forces
- Built Into the Fibre or Applied to the Cloth: What Protection Costs Over a Life What Moving to the Cheapest Protection Saves
- Buyer Chargeback: Contest, Fix or Accept Recoverable a Year
- Buyer Cost to Serve & Development Recovery Net Margin After Serving the Book
- Buyer Quotation Generator Order Value
- Buyer Terms & Effective Price Comparison Best Offer, Once Its Terms Are Paid For
- Buyer Test Plan & Laboratory Budget Laboratory Cost for the Range
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tools
Apparel Manufacturing
Apparel Manufacturing & Garmenting · Merchandising, Retail Math & Apparel Production
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Apparel Manufacturing & Garmenting 18
- Garment FOB Costing Sheet Premium Builds a full FOB costing sheet from fabric, an open-ended trims table, CM at real line efficiency, value addition, rejects, finance and freight, grossing up commission and profit against the selling price rather than the cost, and exports the sheet as a working document. FOB per Garment cost/pc
- What a Late Specification Change Costs, by the Stage It Arrives At Premium Prices a change against the stage the order has reached, separating the three costs it carries - the committed value it destroys, the work it forces to be done again, and the line hours the rework takes from other orders. Returns the whole staircase rather than one figure, so the output is a change tariff that can be agreed at order confirmation, and names the operation that costs least and destroys most. What the Change Costs cost
- Bed Linen Cut Plan & Fabric Consumption Calculator Builds a flat sheet, fitted sheet or pillowcase from its finished size outward — hems, seams, fitted pocket depth and tuck-under, then residual shrinkage — and divides the cut width into the usable fabric width to find how many pieces lie across the roll. Reports fabric per piece in metres and kilograms, what the leftover selvedge strip is costing, and how close the cut is to gaining a piece across. Fabric per Piece m
- Cut-to-Ship Ratio & Wastage Calculator Tracks the cut-to-ship ratio of a garment order, separates reject rate from total wastage, and works backwards to the cut quantity needed to ship an order in full at the observed loss rate. Cut-to-Ship Ratio %
- Cutting Room Lay Height & Plies Calculator Determines the maximum number of plies a straight knife or automatic cutter can take for a given fabric thickness, and how many lays an order will need at that height. Maximum Plies per Lay no.
- Embroidery Stitch Count, Thread & Backing Consumption Calculator Derives embroidery stitch count from design area, fill coverage and tatami fill geometry, adds the underlay, converts the total into top and bobbin thread length, and reports machine run time, pieces per hour across all heads and the backing area each piece consumes. Total Stitch Count stitches
- Fabric Consumption per Garment Calculator Converts marker yield into fabric consumption per garment in kilograms, metres and yards, with compounding allowances for end loss, residual shrinkage and rejects so the fabric booking covers the real order. Fabric per Garment kg
- Fabric Relaxation Dwell before Cutting Models relaxation as a fast and a slow viscoelastic component, returns the strain still in the cloth after a given dwell, the panel dimension error it will produce, the dwell a target residual actually needs and the roll buffer that dwell implies. Residual Strain at Cutting %
- Garment Factory Machine Requirement Estimator Translates a target daily output into the number of machines of a given type a factory must install, accounting for operation SAM, working minutes, line efficiency and a spare machine allowance. Machines to Install no.
- Marker Efficiency & Fabric Yield Estimator Calculates marker efficiency from the pattern area actually used against the marker area consumed, and converts it into fabric length and area per garment for costing and cut planning. Marker Efficiency %
- Needle Size & Thread Ticket Number Matcher Matches sewing thread ticket number to the correct needle size in metric and Singer scales, and reports thread linear density and diameter, preventing needle heating, thread shredding and skipped stitches. Recommended Needle Size Nm
- Operator Line Balancing & Pitch Time Calculator Calculates pitch time, line efficiency and balance efficiency for a sewing line from total garment SAM, operator count and the bottleneck operation, and the operator count a target output would require. Pitch Time min
- Sewing Thread Consumption Estimator Estimates sewing thread consumption per garment and per order from seam length and stitch class, since a four-thread overlock consumes roughly seven times the thread a lockstitch does over the same seam. Thread per Garment m
- Shade Band Grouping & Roll Allocation to Cut Lays Divides a fabric consignment into shade bands from its measured colour spread, allocates rolls and lays to each band, and reports the fabric stranded as sub-lay remnants at the end of every band - the hidden cost of a tight shade tolerance. Shade Bands Required
- Standard Allowed Minutes (SAM / SMV) Calculator Converts a stopwatch time study into Standard Allowed Minutes by applying performance rating and bundle, machine and personal allowances, then reports the operator output that SAM implies per hour and per shift. Standard Allowed Minutes min
- Straight-Knife Blade Life, Sharpening & Cost Scales a reference blade life by fabric abrasiveness and ply height, returns the markers a blade survives between sharpenings, the sharpening stops and downtime a shift incurs, and the blade cost per marker and per year. Effective Blade Life m
- Thread Breakage Converted into Line Capacity Turns a breakage rate per hundred thousand stitches into breaks per shift, re-threading downtime, the share of line capacity it consumes and its cost, then solves the rate a downtime target would require. Line Capacity Lost to Breaks %
- Work-in-Progress & Cycle Time Calculator Applies Little's Law to a sewing line, converting work-in-progress and throughput into manufacturing cycle time, and compares the required takt time against the pace the line actually holds. Manufacturing Cycle Time h
Merchandising, Retail Math & Apparel Production 23
- Buyer Chargeback: Contest, Fix or Accept Premium Splits a year of buyer deductions into the part that can be argued and the part that can only be engineered away, then decides each deduction type three ways: contest it, fix its cause, or accept it. Prices contesting per claim against the hours it takes, and each fix against the recurring deduction it removes. Recoverable a Year cost
- Buyer Cost to Serve & Development Recovery Premium Charges each buyer with what it actually costs to serve: the samples it asked for divided by the orders it placed, and the office effort its order pattern consumes regardless of order size. Ranks the book by contribution after those costs rather than by gross margin, reports the samples each won order carried, and returns the order value below which each buyer stops paying for itself. Net Margin After Serving the Book %
- Buyer Quotation Generator Premium Quotes a whole style range to one buyer at once: grosses up each style so commission and margin are shares of the quoted price, measures what the buyer's target price would actually earn style by style, and then re-blends the margin over only the styles that sit below your walk-away floor - the ones the buyer is most likely to place. Order Value cost
- Buyer Terms & Effective Price Comparison Premium Reduces competing buyer offers to what each one actually pays: the quoted price less the cost of financing the credit it demands, less the deductions it habitually takes. Compares the offer that wins on the headline against the offer that wins on the money, prices the difference across the order, and shows the spread shrinking once the terms are paid for. Best Offer, Once Its Terms Are Paid For cost/pc
- Currency Exposure on an Order Book Premium Measures a book quoted in one currency and costed in another against the margin rather than against the rate. Nets the imported inputs bought in the quoted currency off the receivable to give the exposure that is genuinely open, prices the cover sold against it, and reports how hard a rate move lands on a margin that is a thin slice of revenue. Margin the Rate Has Already Taken local
- Cut Quantity Against Size Ratio: What the Total Hides Premium Reads a cut plan size by size against the ordered ratio, reports what can actually be shipped rather than what was cut, and prices the two failures separately - overcut pieces as finished goods nobody ordered, short pieces at whatever the contract charges for a short shipment. Fill Rate Against the Ratio %
- Funding the Receivables Book: Hold, Insure or Discount Premium Prices every buyer on the book three ways - funded from the bank limit, insured, or discounted - on one basis that charges the lender, the money the mill has to find itself and the loss it still carries. Reports which route is cheapest for each buyer, what routing them separately saves against applying one product to everything, and the return on released capital at which insuring a buyer stops being loss protection and starts being a working capital decision. What Routing Each Buyer Separately Saves cost/yr
- Markdown Timing & Depth Against a Season Premium Runs a season week by week under a proposed markdown and against every alternative week and depth, and prices the difference. Reports the margin on the buy rather than the margin on a unit, shows the depth a two-week delay would then require, and gives the week-by-week plan the buy actually needs. What the Plan on the Table Costs cost
- Minimum Order Quantity, the Stage That Sets It & the Cost of a Short Run Premium Carries every process minimum in the chain forward through the losses that follow it and expresses each one in finished pieces, so the minimum order quantity stops being a policy and becomes a computed number with a named cause. Then prices what running below it costs: the fabric bought and not sold, the true cost per piece against the cost at the chain's own lot size, the surcharge that restores the target margin, and what the next piece actually costs while the surplus lasts. What Running Below the Floor Costs, Per Piece cost/pc
- Preferential Origin & Duty Advantage Sheet Premium Works a value content rule of origin against a bill of materials and reports the number that actually matters before a price negotiation: the lowest export price at which the order still qualifies for preference. Prices each non-originating line by what re-sourcing it would cost per point of content gained, so buying origin can be compared against losing it. Duty Saved by Preference cost
- Pricing a Programme Through the Learning Curve Premium Prices a repeating programme across the months the line takes to reach its standard minute value, rather than at a standard the line will not hit for a season. Reports the premium the ramp has to add to the quotation, the month a single month stops losing money against the later month the programme itself does, the deficit being funded in between, and what a buyer who ends the programme early or re-tenders after the learning leaves behind. What the Ramp Has to Add to the Quotation cost/pc
- Pulling In a Calendar: What Each Day Costs and Which Day to Stop Buying Premium Prices a compressed time and action calendar one day at a time, taking each day out of whichever chain is actually setting the ship date. Reports the ladder of what successive days cost, the point at which two chains bind together and a day starts costing two crashes, and the day at which buying another becomes dearer than arriving late. What Buying the Right Number of Days Saves cost
- The Freight per Garment You Costed, and the Freight the Container Bills Premium Prices the cube each carton specification consumes, says for every style whether the shipment runs out of volume or out of weight first, rounds the container count up the way the carrier does, and reports the freight per garment actually billed against the figure the costing sheet assumed - with the gap in money on the quantity shipped. Freight per Garment as Billed cost/pc
- The Price on the Invoice and the Price You Keep Premium Follows a price from the list, through the discount that was negotiated, down through every concession granted after the invoice - settlement, credit days beyond terms, year-end rebate, claims settled, freight absorbed, samples never charged - and reports what each customer is actually worth per unit. Ranks them by the pocket discount rather than the invoice one, names the band between the best and the worst, and counts any customer whose pocket price is below variable cost. Total Discount off List %
- What a Reject Is Written Down To, and What It Fetches Premium Costs every disposal channel for seconds net of what it takes to use it - sorting, delabelling, freight, the share the channel refuses and the wait to be paid - and ranks them against the one baseline that is usually wrong, which is zero. States destruction as the priced alternative it actually is, and separates the recovery a contract forbids from the recovery nobody got round to. Net Recovered cost
- Cut-Order Planning & Lay Optimization Calculator Plans a cut order into lays: full lays at maximum ply height, the remainder garments and the short lay they need, how poorly that short lay uses the spread, total plies and the fabric the order will draw. Lays Required no.
- Factory Line Efficiency, Performance & Utilisation Modeler Splits sewing line efficiency into performance and utilisation using earned, on-standard and attended minutes, accounting for absenteeism and off-standard time, and converts attended minutes into a labour cost per piece. Overall Efficiency %
- Multi-AQL Inspection Thresholds (Critical / Major / Minor) Derives accept and reject numbers for critical, major and minor defect classes against one inspection sample, shows how much of each acceptance limit the findings consume, and reports the overall defect rate. Tightest Limit Consumed %
- Open-to-Buy, Inventory Turn & GMROI Modeler Calculates open-to-buy for a buying period from planned sales, markdowns, opening and closing stock and outstanding orders, alongside inventory turn, weeks of supply and gross margin return on inventory investment. Open-to-Buy
- Tech Pack Graded Measurement Generator Scales a base-size tech pack measurement across a full size run from the grade rule, returning the top and bottom size measurements, the span of the run, the tolerance band and how far adjacent sizes overlap within tolerance. Largest Size Measurement cm
- Thread Consumption by Stitch Class (ISO 4915) Matrix Adds up garment thread consumption across the ISO 4915 stitch classes actually used — lockstitch, chainstitch, overedge and safety stitch — each at its own consumption factor, with wastage allowance and thread weight. Thread per Garment m
- Trim Matrix Explosion & Single-Variant Kitting Exposure Resolves a size and colour trim matrix into the number of distinct trim variants actually purchased, contrasts a rule-based BOM against flat per-SKU bills for rows held and edits per supplier change, and sizes the order halted when one single variant runs short. Distinct Trim Variants to Buy variants
- Washed-to-Raw Shrinkage Reversal Calculator Reverses garment wash shrinkage to size the raw pattern block: raw length and width needed to land on the finished measurements, the growth added in each direction, the fabric consumption uplift and the spread caused by shrinkage variability. Raw Pattern Length cm
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Commercial & Technical Textiles
Commercial Costing & Advanced Textiles
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Commercial Costing & Advanced Textiles 31
- Brownfield Expansion: What the Next Increment Costs Premium Prices an expansion against the shared plant it forces rather than against the machinery quotation. Reports the largest increment that needs nothing bought, the size at which the steps being bought would be full, and the sizes in between where a modest-sounding expansion has crossed every limit and filled none of them. Shared Plant the Proposal Forces cost
- Demurrage and Detention Are Two Clocks Premium Separates the terminal's charge for a container sitting in its yard from the carrier's charge for its equipment being out of the system, because they run on different clocks with different free days and different people to argue with. Prices the move everyone makes when the bill arrives — pulling the box out sooner, which stops one clock and starts the other — lane by lane, and values an extra free day on each clock separately so a contract negotiation can be aimed at the one that is worth something. The Whole Bill cost/yr
- Integrating Backward: How Much Plant to Build, and What You Must Sell to Strangers Premium Sizes a backward integration against your own consumption rather than against the plant's cost curve. Charges every kilogram of capacity you cannot fill, prices the surplus at what a newcomer would actually get for it and only as much as could be placed, and tests each size against a bad year - so the answer is a capacity rather than an argument. What the Right Size Saves a Year cost/yr
- Order Post-Costing & Variance Statement Premium Closes the order the costing sheet opened. Sets every quoted cost line against what the order actually consumed and actually paid, splits the overrun into the rate effect, the quantity effect and the joint term that belongs to neither, and prices the short shipment that raised the cost of every piece that did ship. Reports the margin quoted beside the margin realised, and the order profit expected beside the order profit earned. Margin Realised %
- Own Account or Job Work: Allocating Capacity Against a Bank Limit Premium Allocates a mill between selling yarn and selling conversion against both constraints at once - the spindle hours it has and the working capital it can fund - and reports the mix, what refusing job work costs in idle hours and lost contribution, what the last rupee of the bank limit is earning, and the job work rate below which each count should be refused once capital is charged at what it is genuinely worth. What Job Work Is Worth a Year cost/yr
- Spinning Mill Working Capital Cycle Premium Builds the full working capital cycle a spinning mill funds - cotton stock, work in process, finished goods and receivables, less supplier credit - across the product mix rather than one average count, then splits it into promoter margin and the bank limit that has to be sanctioned, prices the interest per kilogram, and reports the shortfall against whatever the project report actually provided. Net Working Capital Required cost
- The Capacity You Buy, and the Capacity the Line Gains Premium Tests every proposed upgrade against the line rather than against its own department, so a machine that adds forty percent to one stage is credited only with what the mill actually gains before the next stage binds. Reports the share of purchased capacity the line captures, names the constraint each upgrade hands the problem to next, and builds the ladder of steps that still pay back inside your hurdle. What the Best Single Upgrade Gains the Line kg/h
- The Escalator You Signed, and the One That Pays Premium Runs a raw material escalation clause over a real price history and reports what it actually recovered against what the mill actually paid. Then prices each clause term separately - the lag, the trigger band, the pass-through share and the cap - as what removing that one term alone would have been worth, so a negotiator knows which sentence to reopen at renewal rather than which one sounds worst. Of the Cost Increase, the Share the Clause Recovered %
- The Fuel Price You Negotiate, and the Steam Cost You Pay Premium Converts every fuel quotation into cost per tonne of steam, through the four things that differ between fuels and are rarely in one person's head: calorific value as received, the efficiency the boiler reaches on that fuel, the ash it leaves to be paid for, and the carbon it is charged for. Then reports, for each fuel, the price it would have to reach to become the cheapest steam - a threshold to watch rather than a ranking that expires. Cheapest Steam Available cost/t
- The Humidification Bill, and the Production It Buys Premium Compares relative humidity setpoints the mill has actually run, costing each on the energy and water it consumes against the efficiency, waste and yarn weight it produced. Names the setpoint the utilities budget prefers beside the setpoint the mill earns most at, and prices the gap over a year - because those two are owned by different managers and are rarely the same number. Cost a Year of Running the Cheapest Setpoint cost
- The Intensity That Improved and the Total That Rose Premium Splits a change in energy or emissions three ways - what came from making more, what came from making different things, and what is genuinely an efficiency gain - using an additive decomposition that reconciles exactly. Reports the improvement a mill can claim beside the one it actually made, tests both against an absolute and an intensity target, and prices the gap at your own abatement cost. Improvement That Survives the Mix %
- The Internal Price: What Cost-Plus Costs a Group Premium Tests the price at which one unit of a group sells to another against the price the group would want it to be. Reports the orders the receiving unit refuses that the group is glad of, the orders it takes that the group loses on once the supplying unit is full, what the difference costs a year, and whether any single internal price can put it right. What the Internal Price Costs the Group cost/yr
- What a Cubic Metre of Effluent Costs, and What Cutting One Saves Premium Separates the average cost of running an ETP or zero-liquid-discharge plant from the marginal cost of the next cubic metre through it, because a water-saving project appraised at the average is credited with a saving most of which does not exist. Reports both rates side by side, what a ten per cent cut actually saves against what it appears to save, what the cut does to the rate on the slide, and which streams are costing more to recycle than fresh water costs to buy. What a Ten Per Cent Cut Overstates By cost/yr
- What a Discrepant Presentation Costs, Against the Fee for It Premium Prices a failed presentation under a documentary credit as what it actually is — the loss of a bank's undertaking and its replacement by a buyer's option — rather than as the discrepancy fee that appears on the statement. Reports the fee, the financing days the waiver cycle adds, the concession weighted by how often it is demanded and the tail where the credit is refused outright, separates the discrepancies that can still be cured before expiry from those that cannot, and names which kind is costing the most rather than which occurs the most. What Discrepancies Actually Cost cost/yr
- What a Forecast Commits You To, and the Day It Stops Being Recoverable Premium Separates the part of a commitment that a firm order stands behind from the part standing on an indicative forecast, and then separates that exposure again by whether it can still be recovered today. Every item has its own date after which there is no recovery at any price — a started dye lot, a printed trim — and the earliest of those, not the cut date, is when the plan actually turns. Reports what is already unrecoverable, what a cancellation would still return, and what another week of waiting for the buyer to confirm costs. What Is Already Gone cost
- What an Export Incentive Is Booked At, Against What It Turns Into Premium Takes a notified export benefit from the headline rate a costing sheet books to the cash that eventually arrives, through each haircut in turn: eligible value rather than invoice value, the per-unit cap that bites only on the styles that earn most, the part that is never credited, the discount a transferable scrip sells at and the months of waiting. Reports the rate you should actually be quoting at, what the shortfall is worth against the order's margin, and which of the four haircuts is doing the damage — because each is fixed in a different place by a different person. The Shortfall cost
- What Margin to Bid, and Why a High Strike Rate Is a Symptom Premium Takes the win rate a factory already achieves at each margin and the hours it can actually run, and finds the bid margin that maximises expected contribution rather than expected orders. Reports the strike rate that goes with it, what bidding to win costs, how far short capacity leaves the plant, and what each missing hour is worth. What Moving to the Right Margin Is Worth cost
- What the Policy Pays, Against How Long the Mill Is Actually Down Premium Tests a business interruption cover against the thing that actually sets the recovery — machinery lead times. A sum insured answers how much and an indemnity period answers how long, and a loss is covered only where both are enough. Prices the months of lost gross profit that fall beyond the period, the shortfall that survives even inside it because output ramps rather than resumes, and the average clause, which reduces every claim in proportion to any under-insurance rather than only the claims above the sum insured. What the Policy Would Not Pay cost
- Ballistic Fabric Energy Absorption Estimator Calculates projectile kinetic energy and momentum against an aramid or UHMWPE ballistic pack, and reports the specific energy absorption per unit areal density that armour designs are compared on. Projectile Kinetic Energy J
- Composite Fibre Volume Fraction Calculator Calculates fibre and matrix volume fractions, theoretical composite density and void content for a fibre-reinforced composite laminate, the properties that govern stiffness and strength in aerospace and automotive textiles. Fibre Volume Fraction %
- Comprehensive Woven Fabric Costing Calculator Builds a woven fabric price per metre from yarn weight and price, sizing, weaving and processing conversion costs, waste, factory overhead and margin, and reports the yarn to conversion cost split. Selling Price /m
- Fibre-to-Garment Cost Cascade with Compounding Stage Losses Traces cost from fibre price through spinning, fabric formation, dyeing and cutting to an ex-factory garment cost, compounding the yield loss at every stage. Reports the fibre a garment really draws, the waste multiplier that produces it, the split between fibre and conversion, and how far the quotation moves when fibre prices move. Ex-Factory Cost per Garment per garment
- Geotextile Tensile Strength & Permeability Modeler Evaluates a geotextile against a design load by applying installation and durability reduction factors to its wide-width tensile strength, and converts permittivity into hydraulic permeability for filtration design. Factor of Safety x
- GRS Recycled Content through Differential Process Loss Runs a recycled and virgin blend through separate process losses, compares the content claimed on input with the content the output actually carries, and solves the recycled input a target content requires after both losses. Recycled Content on Output %
- Knitted Garment FOB Costing Simulator Simulates the FOB price of a knitted garment from fabric consumption, trims, SAM-based cut-and-make cost, factory overhead, margin and buying agent commission. FOB Price /pc
- Medical Nonwoven Absorbency & Barrier Calculator Calculates absorbency capacity and hydrostatic barrier performance for medical nonwovens used in drapes, gowns and wound dressings, taking the basis weight from the weighed sample and normalising results by it. Absorbency Capacity %
- Production Line Carbon Credit Estimator Estimates the carbon dioxide avoided by an energy efficiency project on a textile production line, and values the resulting credits annually and across the project lifetime. Emissions Avoided tCO2/year
- Profit Margin, Markup & GST Calculator Separates profit margin from markup for a fabric or garment sale, and adds GST to give the invoice value, with totals across the order quantity for trading and roll sales. Profit Margin %
- Textile Mill ROI & Payback Period Calculator Evaluates a machinery investment by calculating return on investment and payback period from annual revenue, operating cost, straight-line depreciation and tax, separating accounting profit from cash flow. Return on Investment %
- Towel Yarn Consumption & Cost per Dozen Works back from a towel's finished size and nameplate weight to the yarn that has to be bought for it. Terry shrinks hard in finishing, so areal weight rises without yarn being added and a quote built on the finished figure is short from the start. Reports loom-state weight, yarn per towel and per dozen, the cost of both, and how many kilograms of yarn are bought for each kilogram of towel that is sold. Yarn per Dozen kg
- Yarn Export FOB & CIF Pricing Calculator Builds yarn export prices from ex-works cost through FOB to CIF, including inland freight, port charges, ocean freight and marine insurance rated on 110% of C&F, plus container count for the shipment. CIF Price /kg
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Fibre & Raw Material
Fiber & Raw Material Engineering · Fiber Testing, Bale Management & Laboratory Sampling · Polymer Rheology & Synthetic Extrusion
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Fiber & Raw Material Engineering 12
- Certified Content Mass Balance & Claim Reconciliation Premium Reconciles a recycled or organic content claim against the certified fibre actually purchased, by carrying the requirement back up the chain through every stage that loses material. Reports the highest claim the purchase honestly supports, prices the two ways of closing a shortfall, and checks separately whether any site in the chain sits outside a certified scope - which voids the claim regardless of the arithmetic. Highest Claim the Chain Supports %
- Recycled Blend Property Budget Premium Interpolates a blend from fibre properties you have measured, using the elongation-limited model rather than the rule of mixtures, because fibres of different breaking elongation do not break together and the difference runs to seventeen percent on a recycled blend. Reports whether the blend is weaker than every fibre in it, the maximum recycled share the strength specification actually permits, and the recycled content that reaches the yarn once the shorter fibre has left as waste. Blend Tenacity cN/tex
- Cotton Micronaire to Denier & Tex Converter Translates a cotton micronaire reading, which is an airflow resistance measure in micrograms per inch, into standard linear density units: denier, tex, millitex and maturity-corrected standard fineness. Linear Density den
- Effective Length & Short Fiber Index Estimator Estimates the Short Fiber Index from HVI upper half mean length and uniformity index, and derives mean and effective staple length, so spinners can anticipate comber noil and yarn evenness problems. Short Fiber Index %
- Fiber Blend Cost Optimization Solver Finds the cheapest two-fibre blend ratio that still meets a target property such as bundle strength or staple length, using the linear rule of mixtures, and prices the resulting mix per kilogram. Blend Cost /kg
- Fiber Quality Index (FQI) Calculator Computes the Fiber Quality Index of a cotton lot from upper half mean length, bundle strength, length uniformity and micronaire, so buyers can rank bales for spinnability before mixing. Fiber Quality Index
- Maturity Ratio & Fineness Converter Determines cotton maturity ratio and maturity coefficient from normal, half-mature and dead fibre counts, then converts micronaire into apparent and maturity-corrected standard fineness in millitex. Maturity Ratio M
- Moisture Regain & Content Calculator Converts oven-dry and as-received weights into moisture regain and moisture content, and derives the conditioned invoice weight used to bill textile materials at the commercial standard regain. Moisture Regain %
- Polymer Melt Flow Index (MFI) Predictor Converts an ASTM D1238 melt flow test into melt flow index, melt volume rate, apparent shear rate at the die wall and hourly throughput, for polymer selection in synthetic fibre spinning. Melt Flow Index g/10min
- Spinning Consistency Index (SCI) Predictor Applies the USTER HVI regression to predict the Spinning Consistency Index of a cotton mix, combining strength, length, uniformity, micronaire, reflectance and yellowness into a single spinnability score. Spinning Consistency Index
- Synthetic Fiber Extrusion Draw Ratio Tool Calculates the mechanical draw ratio between feed and draw godets in melt spinning, and the drawn denier, tex and denier per filament that result from stretching the as-spun yarn. Draw Ratio x
- Trash Content & Cleaning Efficiency Calculator Measures blow room and carding cleaning efficiency from trash content before and after the line, and converts the percentages into kilograms of trash removed and good fibre lost per hour. Cleaning Efficiency %
Fiber Testing, Bale Management & Laboratory Sampling 16
- Raw Material Cover & Price Exposure Sheet Premium Sets a mill's cotton position against the yarn it has already sold at a fixed price, which is the only comparison that says whether the mill is exposed. Separates tonnage secured from price secured, converts firm yarn sales into the cotton they require at the stated realisation, and prices a movement against the gap in either direction. Exposure t
- The Cheapest Bale Laydown That Still Meets the Specification Premium Solves the laydown as the blending problem it is: the cheapest combination of the lots actually on the floor that still meets every line of the cotton specification, inside the availability of each lot and a mixing discipline that keeps any one of them from dominating. Then prices each line of the specification separately, so the mill knows which one is costing it money and which five are free. What the Specification Costs a Laydown cost
- The Grams Above Nominal That Nobody Pays You For Premium Prices the distance between the GSM a fabric is sold at and the GSM a mill actually has to aim at, because running on nominal puts half the rolls under the lower limit. Every gram of that distance is yarn given away on every square metre of every order, and it is invisible because the cloth passes. Reports what it costs a year, the lowest aim that still holds the light-roll rate you will accept, and how much of the giveaway is bought back by aiming better against how much needs the variation reduced. What the Giveaway Costs cost/yr
- Bale Density, Press Duty & Container Fill Turns bale mass and dimensions into density and compression ratio, gives the height a target density needs, sizes the press force and ram pressure from a compaction pressure, and reports how many bales a container holds and whether it cubes out or weighs out. Bale Density kg/m3
- Bale Laydown Constraint Window & Minimum Bale Count Works out how many bales a laydown needs so mix-to-mix variation stays inside tolerance: the standard error of the laydown mean for micronaire and strength, the bale count each property demands on its own, which one binds, and the sigma margin left at the planned count. Minimum Bales Required bales
- Bale Moisture & Net-Mass Normalizer Separates gross, tare, net and oven-dry mass for a received bale, restores the dry fibre to commercial mass at the standard regain, and prices the difference against the invoiced weight for the bale and for the whole lot. Commercial Mass per Bale kg
- Cotton Contamination & Colour Grade Risk Scorer Combines stickiness, bark, polypropylene, seed coat fragments and colour grade into one lot risk score, separates out the share contributed by polypropylene, and prices the expected downgrade against lot value. Composite Contamination Risk /100
- Fibre & Fabric Conditioning Time to Moisture Equilibrium Estimates the time a textile specimen needs to reach moisture equilibrium in a standard atmosphere, using capacity-limited Fickian diffusion through the fibre assembly: porosity and sorption capacity set the effective diffusivity, specimen half-thickness sets the time constant, and the required tolerance sets how many time constants must pass. Time to Reach Tolerance h
- Fibre Blend Homogeneity Index Across Process Stages Tracks blend variation from bale laydown through chute feed and sliver to yarn, reports how much variance each stage removed, tests the measured blend ratio against target for statistical significance, and flags any stage that added variation. Blend Homogeneity Index %
- Fibre Length Distribution & Short Fibre Content Fits a log-normal length distribution to a measured mean and coefficient of variation, then derives upper half mean length, uniformity index, median length, short fibre content on both the by-number and by-weight bases, and the fraction above a long-fibre threshold. Upper Half Mean Length mm
- Fineness & Maturity Calibration Validity Converter Converts a micronaire reading to standard fineness through an explicitly stated linear calibration model, then reports how far outside the calibration range the reading sits, inflates the reported uncertainty by that extrapolation, and checks maturity against the model validity floor. Extrapolation Beyond Calibration %
- HVI Replicate & Outlier Checker Separates three causes of a suspect fibre result: the Grubbs statistic for an abnormal specimen against the ceiling the replicate count allows, check-cotton bias for instrument drift, and the replicate spread against the method repeatability standard deviation. Grubbs Statistic G σ
- Laboratory Sample Chain-of-Custody, Load & Turnaround Converts daily lot intake into samples, tests and technician hours, compares the load against real bench capacity, and reports turnaround including the conditioning period, the custody records generated and the retained sample mass an ISO/IEC 17025 laboratory must store. Technician Utilisation %
- Staple Cut-Length, Crimp Contraction & Tow-to-Staple Yield Computes crimp contraction from crimp frequency and amplitude by integrating the arc length of the crimp wave, converts an extended cut length into the crimped length actually measured, and reports staples per gram, crimps per staple, filament count in the tow and cut-line production. Crimp Contraction %
- Statistical Sampling Plan, OC Curve & Average Outgoing Quality Sizes an attribute sampling plan from lot size and inspection level using the ISO 2859-1 code letter table, then computes the full operating characteristic: acceptance probability at the AQL, producer's risk, the quality level the plan rejects nine times in ten, average outgoing quality and the inspection load. Sample Size units
- Trash Particle Size Class Removal & Selectivity Splits blowroom and card cleaning efficiency by particle size class — dust, medium trash and large trash — then prices the good fibre thrown out with it, returning the selectivity ratio of trash removed to lint lost. Overall Particle Removal %
Polymer Rheology & Synthetic Extrusion 14
- How Often to Change a Part That Wears Out Slowly Premium Sets the change interval for the parts that never fail and only get worse - spin packs, travellers, card clothing, cots and aprons, screens - by balancing what a change costs against the rate the running cost climbs with age. Reports the interval, whether each part is being changed early or late, and what a quicker or cheaper change would be worth once the interval is allowed to move with it. What the Right Intervals Are Worth cost/yr
- Bicomponent Spinneret Flow Ratio Optimizer Converts a core-sheath or side-by-side mass ratio into the mass and volume flow each polymer stream must deliver, the volume ratio the spinneret geometry has to match and the cross-sectional share the core will actually occupy. Core-to-Sheath Volume Ratio ×
- DTY Texturing Output, Doff Cycle & Denier Economics Turns feed denier and draw ratio into the textured count, gives output per position and for the whole machine at a stated efficiency, sizes the doff cycle and the package rate, and reports the conversion cost per kilogram that the denier being run actually decides. Machine Output kg/h
- Extrusion Quench Airflow & Cooling Rate Calculator Sizes cross-flow quench air from a heat balance on the extruded melt: heat to remove, air mass and volume flow at the working temperature rise, face velocity across the cabinet, filament residence time and the cooling rate it implies. Quench Air Required m³/h
- Filament Denier, Spinneret Hole Throughput & Spin Draw Ratio Links polymer throughput, spinneret hole count and take-up speed to the denier and dtex of a melt-spun filament, then derives the die exit velocity, spin draw ratio, capillary wall shear rate, solid filament diameter and the attenuation between hole and filament. Denier per Filament den
- Godet Draw Ratio & Molecular Orientation Predictor Predicts what godet drawing does to a filament: draw ratio from the roll speeds, drawn linear density, an orientation factor, and the tenacity gain and elongation loss that follow from the draw. Draw Ratio ×
- Melt Residence Time, Thermal History & IV Loss Risk Converts melt temperature and residence time into an equivalent time at a reference temperature by the Arrhenius rate ratio, splits the predicted intrinsic viscosity loss into its thermal and hydrolytic components, and back-calculates the residence time a stated IV budget allows. Predicted IV Loss dL/g
- Monofilament Die Swell (Barus Effect) Calculator Predicts extrudate swell at the die exit using Tanner's relation: the swell ratio from recoverable shear strain, the extrudate diameter and cross-section it produces, and the final filament diameter after draw-down. Die Swell Ratio ×
- Polymer Drying Hopper Volume, Dew Point & Heater Duty Sizes a desiccant drying hopper from throughput and required residence time, computes the water actually removed at the stated moisture reduction, converts the drying dew point into absolute humidity, and reports process air demand, heater duty and specific drying energy per kilogram of polymer. Required Hopper Volume m3
- Polymer Intrinsic Viscosity, Molecular Weight & IV Drop Calculator Converts capillary viscometer efflux times into intrinsic viscosity by the Billmeyer single-point equation, inverts Mark-Houwink to number-average molecular weight and degree of polymerisation, and reports the IV drop across processing as chain scissions per original molecule. Intrinsic Viscosity dL/g
- POY Crystallisation & Shelf Life Modeler Models how warehouse temperature and humidity shorten partially oriented yarn shelf life: the temperature and humidity acceleration factors, the resulting usable life, and how much of it a stored lot has already consumed. Usable Shelf Life days
- Spin Finish Oil Pick-Up (OPU) Dosing Calculator Converts a target oil pick-up into applicator dosing: finish solids required, emulsion consumption at the working concentration and applicator efficiency, metering pump rate and emulsion drawn per kilogram of yarn. Emulsion Consumption kg/h
- Spin Pump RPM & Melt Throughput Calculator Syncs a metering gear pump to the line: volumetric melt flow, required pump speed at the working volumetric efficiency, throughput per spinneret hole and an apparent melt viscosity derived from the melt flow index. Required Pump Speed rpm
- Staple Cutter Blade Pitch & Fibre Length Calculator Relates rotary cutter geometry to staple output: fibre length from blade pitch, the cutter speed that matches the tow feed, cuts per minute, tow linear density and line production rate. Cut Fibre Length mm
34
tools
Finishing & Environment
Coating, Lamination & Advanced Finishing · Finishing & Environmental Engineering · Finishing, Coating, Lamination & Functional Performance · Leather, Coated Fabrics & Tarpaulins
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Coating, Lamination & Advanced Finishing 5
- DWR C6 vs C0 Water Repellent Cost Optimizer Compares C6 fluorocarbon and C0 fluorine-free durable water repellents on cost per metre of finished fabric at each chemistry's own working concentration, with the cost premium, chemical consumption and the annual difference at production volume. C0 Cost Premium %
- Flame Retardant LOI (Limiting Oxygen Index) Predictor Predicts limiting oxygen index from flame retardant add-on using a saturating response curve, and solves the add-on needed to reach a target LOI, with the margin over the self-extinguishing threshold and how far the system has saturated. Predicted LOI
- Foam Finishing Blow Ratio & Wet Pick-up Calculator Sizes a foam finishing application: foam density from the blow ratio, liquid and foam volume applied at the target wet pick-up, chemical add-on delivered, the drying load that remains and the energy saved against conventional padding. Chemical Add-on g/m²
- Hot Melt PUR Lamination Dot Density & Application Rate Calculates reactive hot melt PUR application rate from dot diameter, height and density: adhesive add-on per square metre, the surface coverage that bond strength costs in breathability, open area retained and hourly adhesive consumption. Adhesive Add-on g/m²
- Knife-Over-Roll Coating Add-on Weight Calculator Converts knife gap, gap factor, coating density and solids content into wet film thickness and dry add-on weight, with the shear rate and shear stress under the knife and hourly coating consumption. Dry Add-on Weight g/m²
Finishing & Environmental Engineering 11
- COD Reduction Efficiency Calculator Measures effluent treatment plant performance from inlet and outlet COD, reporting removal efficiency, the mass of oxygen demand removed daily, and the margin against the discharge consent limit. COD Removal Efficiency %
- Compacting Overfeed & Shrinkage Control Tool Calculates compactor overfeed from feed and delivery speeds, the compaction actually required to bring residual shrinkage down to a target, and the residual shrinkage the current setting will leave in the fabric. Applied Overfeed %
- Effluent Treatment Plant COD & BOD Load Estimator Converts effluent flow and concentration readings into daily COD, BOD and suspended solids loads for an effluent treatment plant, and reports biodegradability and the pollution load per kilogram of fabric processed. COD Load kg/day
- ETP Sludge Generation Estimator Predicts dry and dewatered sludge output from an effluent treatment plant based on suspended solids removed and coagulant dosed, for sizing filter presses and planning hazardous waste disposal. Dry Sludge Generated kg/day
- Fabric Singeing Burner Gas Consumption Calculator Converts singeing burner power, fuel calorific value and line speed into gas consumption per hour and per square metre of fabric, with the running cost that follows. Gas Consumption kg/h
- Garment Carbon Passport Estimator Estimates cradle-to-gate carbon for one finished garment across five stages - fibre, spinning, fabric formation, wet processing and garment make - and returns a range rather than a single figure, widened by the evidence grade you hold for each stage. Cradle-to-Gate Carbon kgCO2e/garment
- Resin Finishing Add-on Percentage Calculator Calculates dry resin and catalyst add-on from padder wet pick-up and bath concentration, and scales both into the chemical quantities a batch will consume for crease-recovery finishing. Dry Resin Add-on % owf
- Sanforizing Shrinkage Potential Tool Determines the rubber belt compression a sanforizer must apply to bring woven fabric residual shrinkage down to specification, and the fabric length consumed in delivering it. Compression Required %
- Stenter Production & Heat Setting Time Calculator Matches stenter line speed to the thermal dwell time a heat setting or curing process demands, and converts the resulting speed into metres and kilograms of finished fabric per hour and per shift. Actual Dwell Time s
- Textile Mill Carbon Footprint Calculator Estimates mill carbon emissions from grid electricity and on-site boiler fuel, splitting Scope 1 and Scope 2, and expresses the result per kilogram of fabric and per operating year. Carbon Intensity kgCO2/kg
- Water Footprint per Kilogram of Dyed Fabric Calculates total and freshwater consumption per kilogram of dyed fabric, the recycling rate achieved, and the freshwater cost carried by each kilogram of production. Water per kg of Fabric L/kg
Finishing, Coating, Lamination & Functional Performance 13
- Which Finishing Line Each Quality Should Run On Premium Loads a book of fabric across finishing lines that are not the same as each other, by working out what a metre of each quality actually costs on each machine once width, chambers, hourly cost and the seconds that machine makes are all counted. Returns the metres to put on each line, what an extra ten hours on each is worth, and what loading by speed instead of by cost is costing. What Loading It Properly Is Worth cost
- Antimicrobial Log Reduction & Durable Dose Converts recovered colony counts into percentage and log reduction against the specification, shows the count a target log reduction actually demands, and carries the applied dose through wash retention to the initial loading a durable claim requires. Log Reduction log
- Dot Lamination Adhesive Add-On & Bonded Area Computes adhesive add-on from engraved dot geometry: cavity volume, volume per square metre, wet and dry add-on after transfer efficiency and solids, the share of area actually bonded, the finished laminate weight and the adhesive consumed per thousand metres. Dry Adhesive Add-On g/m2
- Finishing Trough Changeover: Purge Volume & Time Compares drain-and-refill cleaning against a continuous flow-through purge for a finishing trough, returning the rinse cycles a carryover limit needs, the volume and time each route costs and the water the better one saves. Drain-and-Refill Cycles Needed nos
- FR Add-On Durability & Initial Loading Required Treats flame retardant loss as geometric decay across launderings and returns the add-on surviving at the target wash count, the wash at which it crosses the effective minimum, the half-life of the finish and the initial loading a durable claim actually requires. Add-On at Target Wash Count % owf
- Heat-Setting Time-Temperature Equivalence & Line Speed Trade Converts a validated heat-setting reference of temperature and dwell into the equivalent dwell at any other temperature through the Arrhenius rate ratio, then into the line speed and production that temperature allows, with the degrees needed to buy a ten per cent speed change. Line Speed at the Proposed Temperature m/min
- Oil Repellency Grade from Critical Surface Tension Places a measured critical surface tension on the AATCC 118 test-liquid ladder to give the oil repellency grade achieved, the margin to the next rung, the critical tension a target grade demands and the Zisman contact angle at that liquid. Oil Repellency Grade AATCC
- Pad-Dry-Cure Thermal Load & Pick-Up Sensitivity Builds the full heat balance for a pad-dry-cure line: sensible heat in the carried water, latent heat of evaporation and sensible heat in the cloth to cure temperature, then the burner rating, the specific energy and what five points off the mangle would save. Burner Duty Required kW
- Raising Drum Kinematics & Pile Action Balance Turns drum and roller speeds into the surface speeds that matter, the slip between wire points and cloth for both pile and counter-pile rollers, the balance between them, and the relative travel a pass puts through the fabric. Pile Slip Speed m/min
- Sanforizing Compression from Belt Geometry Computes the surface strain a rubber belt develops around the compression roller, the compression actually applied at a given utilisation, the residual shrinkage that leaves, and the belt thickness or utilisation a target residual would require. Residual Shrinkage %
- Spray Rating Decay & Heat Reactivation Fits the per-wash decay of an AATCC 22 spray rating from a measured pair, projects the rating at the claimed wash count with and without heat reactivation, and reports the washes a target rating survives either way. Rating at the Claimed Wash Count AATCC
- Stenter Chain Width, Overfeed & Target GSM Solver Runs the stenter mass balance both ways: entry width, chain width, overfeed and finish add-on into the exit GSM they produce, and a target GSM back into the overfeed it demands - with the error against the current setting. Exit Fabric Weight g/m2
- Sueding Mass Loss, Strength Penalty & Fibre Cost Scales abrasive removal with grit number and contact intensity to give mass loss per pass and over a sequence, the finished GSM, the strength penalty that runs ahead of the weight loss, and the fibre being converted to dust every hour. Finished GSM g/m2
Leather, Coated Fabrics & Tarpaulins 5
- Artificial Leather PU Foam Expansion & Density Calculator Calculates the expansion ratio and void fraction of a foamed polyurethane sponge layer, the areal weight it delivers at a given thickness, and the polymer saved against an unfoamed layer of the same build. Expansion Ratio ×
- Coated Fabric Low-Temperature Flexural Rigidity Predictor Projects coated fabric flexural rigidity down to service temperature on an exponential stiffening law, compares it with the cracking threshold, and solves the temperature at which cold cracking begins. Rigidity at Service Temperature mN·cm
- HF Weld Energy Density & Seam Peel Strength Predictor Relates high-frequency welder settings to seam performance: energy density from power, dwell and electrode area, the peel strength it develops, how close that comes to the base fabric ceiling, and the settings needed to reach it. Predicted Seam Peel Strength N/50mm
- Leather Slit Tear Resistance Calculator (ASTM D2212) Reduces a three-specimen slit tear series to a reportable result: mean peak force, thickness-normalised tear strength, the scatter across specimens and the margin against a specification minimum. Tear Strength N/mm
- PVC Plastisol Coat Build & Fusion Dwell Calculator Plans a PVC plastisol coating build: fused film weight per pass from blade gap and density, coats needed to reach a target tarpaulin weight, the finished film thickness, and whether the fusion oven delivers enough dwell at line speed. Fused Weight per Coat g/m²
30
tools
Knitting
Advanced Knitting & Hosiery · Knitting · Knitting, Hosiery & Stretch-Fabric Control
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Advanced Knitting & Hosiery 9
- Fleece & Terry Knit Loop Length and Plating Optimizer Balances the three yarn streams of a fleece or terry circular knit — face, tie and pile — into areal weight per stream, total fabric weight, pile height from the loop length difference and the share of weight the pile carries. Fabric Areal Weight g/m²
- Intarsia Carrier Stroke & Overlap Waste Optimizer Quantifies the cost of intarsia colour blocking: carrier stroke per block including edge overlap, total carriage travel against panel width, the overtravel that buys nothing, and the yarn consumed in overlaps per panel. Carrier Overtravel %
- Knitting Needle Hook Load & Fatigue Limit Calculator Estimates the peak load a knitting needle hook carries from running yarn tension and dynamic knock-over loading, compares it against the fatigue-limited allowable rather than the breaking load, and counts the cycles the needle will see in service. Fatigue Safety Factor ×
- Needle Butt Wear & Replacement Interval Applies Archard sliding wear to the needle butt against the cam track, converting machine geometry and speed into sliding distance per hour, wear depth, contact pressure and the running hours before the butt reaches its wear limit. Running Hours to Wear Limit h
- Seamless Knit Compression Zone Modeler Applies Laplace's law to a seamless compression garment: interface pressure at the distal and proximal circumferences, the resulting graduation, and the fabric tension needed to hit a target pressure at the ankle. Distal Interface Pressure mmHg
- Sock & Hosiery Cylinder Cycle and Chain Link Calculator Converts a sock design length and course density into total courses, pattern chain links, knitting time per sock, machine cycle time at a working efficiency, output per hour and stitches formed per sock. Machine Output socks/h
- Sock Pairing Yield from Length Variation Converts leg length CV into the probability that two socks taken at random will pair within tolerance, then contrasts it with the yield a sorted bin system delivers, and reports the singles and their cost per shift. Pairing Yield with Sorting %
- Spacer Fabric Thickness & Compression Predictor Predicts the compression resistance of a 3D spacer knit by treating each spacer monofilament as an Euler column: critical load per filament, fabric buckling pressure, column slenderness and thickness under a target compression strain. Compression Resistance kPa
- Warp Knit Rack Length & Two-Bar Run-in Ratio Calculator Balances front and back guide bar run-in on a two-bar tricot or raschel machine: runner ratio, stitch length per course for each bar, fabric produced per rack of 480 courses and the areal weight each bar contributes. Fabric Areal Weight g/m²
Knitting 11
- What Shrinkage Allowance to Cut a Knit Programme At Premium Sets the cutting allowance for a knitted programme from its own wash tests rather than from habit, by sliding the tolerance window across the shrinkage the fabric actually has and pricing every position against both the fabric it consumes and the garments it puts outside the measurement sheet. Publishes the allowance to cut at in each direction, the cut dimensions size by size, and whether the spread is wider than any allowance can hold. What Resetting the Allowance Saves cost
- Circular Knitting Production Calculator Converts circular knitting machine speed, feeder count, needle count and stitch length into fabric output in kilograms per hour and per shift, along with the yarn length and course rate the machine consumes. Fabric per Shift kg
- Courses & Wales per Inch Calculator Converts loop counts taken over a measured knitted sample into courses per inch, wales per inch, metric equivalents and stitch density, the base measurements for every other knitting calculation. Courses per Inch CPI
- Fabric Relaxation Shrinkage Calculator Measures lengthwise and widthwise relaxation shrinkage from marked sample dimensions before and after washing, and derives the area change and the GSM the fabric will settle at once relaxed. Length Shrinkage %
- Knitted Fabric GSM Predictor Predicts the grams per square metre of a knitted fabric from courses and wales per inch, stitch length and yarn count, by counting the loops in a square metre and the yarn length they consume. Predicted Fabric GSM g/m²
- Loop Shape Factor & Fabric Density Calculator Computes Munden's Kc, Kw and Ks constants and the loop shape factor for a knitted fabric, the dimensionless measures that predict whether a structure has reached its stable relaxed state. Loop Shape Factor Kc/Kw
- Machine Gauge to Optimum Yarn Count Matcher Matches a knitting machine gauge to a workable yarn count range, and checks needle spacing against yarn diameter so the chosen count will not jam the needle bed or knit slack. Optimum Yarn Count Ne
- Plating Yarn & Elastane Ratio Calculator Calculates the true elastane percentage in a plated knitted fabric from ground yarn count, elastane denier and the draft ratio it is fed at, so labelling and costing reflect what is actually in the cloth. Elastane Content %
- Spirality & Skewness Calculator Quantifies spirality in single jersey fabric from measured wale displacement, giving the percentage, the equivalent skew angle and the margin against an agreed acceptance limit. Spirality %
- Stitch Length & Course Length Estimator Derives stitch length from an unravelled course length and needle count, and reports the tightness factor that governs knitted fabric handle, dimensional stability and weight. Stitch Length mm
- Warp Knitting Runner Length & Beam Feed Calculator Converts tricot or raschel runner length per rack into the fabric weight a guide bar contributes, the yarn consumed per square metre and the beam feed rate the machine will demand at a given speed. Weight Contributed by This Bar g/m²
Knitting, Hosiery & Stretch-Fabric Control 10
- Circular Knitting Specific Energy, Cost per Kilogram & Carbon Derives production in kilograms per hour from the machine's own knitting geometry, adds drive, auxiliary and compressed air load, and reports specific energy in kWh per kilogram with the cost, the annual consumption and the carbon behind it. Specific Energy kWh/kg
- Elastane Plating Draft, Content Percentage & Retraction Force Derives the elastane loop length from the plating draft ratio, splits fabric weight between ground yarn and elastane to give the content percentage against target, and reports the extension the elastane is held at and the retraction force per centimetre of fabric. Elastane Content %
- Knit Tube Slitting: Open Width, Trim Loss & Marker Fit Derives the open width a knitted tube gives when slit, from needle count and wales per centimetre, deducts the edge trim, fits markers across the usable width and prices the strip left over - usually the largest single loss in the process. Open Width After Slitting cm
- Knitting Fault Locator: Repeat Spacing to Feeders and Needles Converts the measured spacing of a repeating knitting fault into courses and wales, and from there into the number of feeders or needles that must be involved - turning a ruler measurement on the inspection table into a specific list of parts to look at. Feeders Involved
- Knitting Order Allocation, Machine Count & Slack to the Due Date Converts an order in kilograms into machine hours, finds the smallest machine count that meets the due date once each machine's own changeover is deducted, and reports completion, slack and how much of the committed time is changeover rather than knitting. Machines Needed to Meet the Date
- Loop Length for a Target Finished Weight, Through Finishing Shrinkage Solves for the loop length that delivers a target finished fabric weight at the finished stitch density, then works back through length and width shrinkage to give the greige weight and density the knitting floor should expect to measure. Loop Length to Set mm
- Positive Feeder Slippage, Loop Length Error & Barre Spacing Compares a positive feeder's theoretical delivery against the length measured at the machine, converts the slippage into loop length and fabric weight error, and gives the vertical spacing of the banding that feeder-to-feeder variation produces. Feeder Slippage %
- Rib & Interlock Loop Transfer Strain, Tightness Limit and Speed Cost Works out the loop length a transfer actually demands from needle pitch and the cylinder-dial gap, distributes the shortfall across the loops that rob to supply it, and reports the resulting yarn strain, the tightest setting that will still transfer, and the speed the transfer courses cost. Transfer Strain as Share of Breaking Extension %
- Stitch Cam Setting Window, Tightness Factor & Fabric Weight Turns yarn count and loop length into the tightness factor, brackets the workable loop length between a tight and a slack limit, places the current setting inside that window, and reports needles, fabric weight and yarn consumption at the machine's running speed. Tightness Factor K
- Warp Knitting: Runner Lengths to Fabric Weight & Machine Output Turns guide bar runner lengths and yarn counts into fabric weight on a tricot or raschel machine: computes needles in the bed, yarn fed per rack, the weight each bar contributes, the resulting GSM, and the machine output in metres and kilograms per hour at a stated speed. Fabric Weight g/m²
104
tools
Mill Operations & Industrial Engineering
Factory Physics & Assembly Logistics · Industrial Engineering, Time & Motion · Machine Performance & OEE · Predictive Maintenance & Spare Parts Physics · +4 more
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Factory Physics & Assembly Logistics 22
- What the Margin on a Test Specification Costs Premium Reads a garment's physical test protocol as one decision instead of eight, and prices the margin each component carries against the requirement it has to meet. Reports which components are paying for room they do not need, which are short of the room they do need once the number of specimens pulled is counted, and which of the savings would disappear the moment the failing test is put right. What the Margin Is Worth Taking Out cost
- Blind Hem Thread Consumption Calculator Calculates thread consumed by a blind hem from stitch density and thread path geometry: stitches in the hem, thread per stitch, gross and allowanced thread length, thread weight and the hem fabric area folded into the allowance. Thread per Hem m
- Bra Underwire Channel Tension & Puncture Margin Calculator Checks underwire poke-through risk: contact stress at the wire end, bearing pressure on the channel, and the margin against both the static puncture resistance and the fatigue-limited allowable that repeated wear actually imposes. Margin to Fatigue Allowable N
- Button Pull-out Force & Attachment Capacity (ASTM D6644) Reduces a three-specimen button pull-out series and compares the measured force against the sewing thread's theoretical capacity, showing whether the attachment is thread-limited or failing in the fabric or shank. Mean Pull-out Force N
- Carton Edge Crush (ECT) & Container Stacking Calculator Applies the McKee relation to garment cartons: box compression strength from edge crush and geometry, the allowable load after a safety factor, how many cartons may stack above the bottom one, and how that compares with the container height limit. Box Compression Strength N
- Down Fill Power to Loft & Thermal Insulation Modeler Converts down fill power and fill weight into loft: free and in-garment loft volume, loft thickness over the garment area, and the tog and clo the resulting thickness delivers. In-Garment Loft Thickness cm
- Fabric Roll ASRS Rack Capacity & Floor Load Calculator Works out how many fabric rolls a rack bay actually holds: positions across, levels up and rolls deep after clearances, total capacity, volumetric utilisation, stored weight and the floor loading it imposes. Rack Capacity rolls
- Fusing Press Settings to Interlining Peel Strength Predicts fused interlining peel strength from press temperature, pressure and dwell against a reference setting, showing each variable's contribution and the margin over a specified minimum. Predicted Peel Strength N/5cm
- Laundry RFID Tag Survival & Wash Cycle Predictor Projects RFID laundry tag survival from a rated life: the hazard rate after temperature and mechanical severity adjustment, survival at a target wash count, mean tag life, cycles to a 90% survival threshold and expected failures per thousand tags. Survival at Target Life %
- Operator Learning Curve to Standard Minute Value Predictor Projects operator learning on a Wright curve: cycle time at the current piece count, efficiency against standard, the cumulative pieces needed to reach the target SMV and how many working days that represents. Cumulative Pieces to Reach Standard no.
- Pleating Take-up Ratio & Flat Fabric Requirement Converts pleat geometry into fabric demand: take-up ratio from fold depth and visible width, the flat width needed for a finished panel, pleat count across it, and the extra fabric the pleating consumes. Take-up Ratio ×
- Ring-Traveller Friction Heat & Burning Risk Modeler Models the thermal load on a ring traveller: surface speed, centrifugal and yarn-tension contributions to normal force, friction power dissipated and the heat flux over the contact patch that decides whether the traveller burns. Friction Heat Generated W
- RO Membrane Scaling Index (LSI) Predictor Evaluates the Langelier Saturation Index in both the feed and the concentrate of a dyehouse RO plant, showing the concentration factor recovery imposes and how far the brine sits into the scaling region. Concentrate LSI
- Roll Width Variation Waste & Width Banding Calculator Quantifies the marker waste caused by roll width variation and how much of it width banding recovers: waste width and percentage with and without grouping, the area saved and what it is worth. Waste Without Banding %
- Seam Sealing Tape Width, Overlap & Hydrostatic Resistance Sizes waterproof seam tape: overlap achieved either side of the stitch line, the hydrostatic resistance that overlap supports, hot-air nozzle dwell at line speed, tape consumed per garment and the width a target head would need. Overlap Each Side mm
- Seamless Garment Heat-Setting Shrinkage Modeler Predicts boarding shrinkage of a seamless garment from temperature and dwell against a reference setting, giving the finished length it produces and the greige length needed to land on a target measurement. Boarding Shrinkage %
- Sewing Needle Heat Build-up & Thread Fusing Predictor Balances needle heating against cooling to estimate steady needle temperature, the margin before a synthetic thread fuses, and the sewing speed at which that margin runs out. Steady Needle Temperature °C
- Spread Fabric Relaxation Time Before Cutting Calculates how long a spread lay of stretch fabric must rest before cutting: relaxation time to a target recovery, the half-time of the process, strain still remaining after a chosen wait, and the length the lay will give back. Resting Time Required min
- Textile HVAC Humidification Water & Air Ratio Calculator Sizes a humidification plant from a moisture balance: water evaporated per hour to lift the air from inlet to target humidity, the air-to-water ratio, water actually supplied at the spray efficiency, and the evaporative cooling that comes with it. Water Evaporated L/h
- Ultrasonic Sealing Energy Density & Speed Optimizer Relates ultrasonic welder settings to seam energy: horn dwell time, oscillation cycles delivered per point, energy per metre and per unit area of seam, horn peak velocity and the total interfacial rub distance. Seam Energy J/m
- Weaving Shed Dust Extraction Airflow Calculator Sizes weaving shed extraction against both criteria: ventilation flow from air changes, dilution flow from the dust load and permitted concentration, the governing figure in CFM, and the fan power it will draw. Extraction Airflow Required CFM
- Zipper Lateral Pull Strength Calculator (ASTM D2061) Reduces a three-specimen crosswise zipper pull series: mean bursting force, scatter across specimens, the margin against a specified minimum and the load carried by each individual element in the jaws. Mean Lateral Pull Strength N
Industrial Engineering, Time & Motion 18
- Living Wage Gap & Compliant Hours Costing Premium Costs the two demands that arrive together - bring hours within the code, and close the gap to a benchmark living wage - as the separate decisions they are. Reports what compliant hours take off the payslip before any wage rise is considered, then what closing the gap from that point costs per garment and as a share of the export price. Cost of Closing the Gap, per Garment cost/pc
- Operator Attrition Cost & Retention Payback Premium Prices labour turnover at what it actually costs rather than at what recruitment invoices: the replacement arrives below the efficiency of the operator who left and climbs for weeks, and those unearned standard minutes are the larger part of the bill. Costs it by section, and tests whether a wage increase pays for itself by returning the attrition rate it would have to reach. Annual Cost of Turnover cost
- Permanent or Contract: Sizing a Roll Against a Seasonal Book Premium Sizes the permanent roll against a month-by-month order book rather than against its average, charging contract labour at the productivity it actually delivers and charging permanent heads in the months there is nothing for them. Returns the headcount that costs least, what the average and the peak cost instead, and the number of months a head has to be busy before employing it beats hiring it. What Sizing the Roll Right Saves cost/yr
- Sewing Line Balance Board Premium Turns an operation bulletin into the figure the line will actually make: the bottleneck station sets the rate, and every other operator waits on it. Reports line efficiency and balance loss, prices the idle minutes as the wage bill they are, and answers the inverse question of how many operators each operation needs to reach a target output. Output per Shift pcs
- The Absence Rate, and the Output It Actually Costs Premium Runs a sewing line as the chain it is, so absence is costed where it binds rather than averaged across the plant. Reports the absence percentage beside the output percentage it destroys - two figures that are equal only by accident - says which operation actually binds once people are missing and whether that is a different one from a full day, and works out how many reserves are worth carrying by buying them only while the output they recover beats the wage they cost. Output Lost to Absence %
- The Price per Kilogram You Buy At, and the Cost per Metre You Weave At Premium Converts each yarn quotation into the currency the mill actually sells in: derives loom efficiency from the break rates and repair times the yarn causes, prices the loom hours it consumes alongside the yarn itself, and ranks the offers by cost per metre of cloth. Then converts back, giving every yarn the price per kilogram it would have to be quoted at to justify itself - a figure a supplier can argue with. Cost a Year of Buying the Cheapest Quote cost
- What an Overtime Piece Actually Costs, Against What the Multiplier Says Premium Costs each overtime block on the output it produced rather than the hours it was paid for, using the line's own recorded efficiency and defect rate, and reports the effective multiple against the same line on regular hours - then names the blocks where the pieces cost more than subcontracting them would have. Effective Cost Multiple x
- What the Spares Store Is Worth, and What It Is Actually Protecting Premium Prices a whole spares store on the one distinction that matters - a stoppage with the part on the shelf lasts as long as the repair, and without it as long as the supply - then reports coverage twice: the share of listed parts that have stock, and the share of the production at risk that the stock genuinely protects. Ranks every line by what one more unit on the shelf would save against what it costs to carry. Coverage of What Is at Risk %
- Where the Shift Went Premium Splits a ring frame shift's shortfall into the four causes that can be acted on separately - running under the designed speed, idle spindles, downtime and waste - and reports what is left unexplained rather than distributing it. Takes one row per frame from the shift sheet a mill already keeps. Shortfall Against What the Frames Could Have Made kg
- Which Shift Earns Its Keep Premium Costs each shift on what stops when it stops, rather than on a share of costs that carry on regardless. Reports the price at which each shift stops earning its keep, ranks the shifts by which is genuinely cheapest to run, and prices the contribution a mill throws away by shutting shifts that only look unprofitable on an absorbed cost. Contribution at Risk From Absorbed-Cost Thinking cost/yr
- Bundle Ticket Tracking & Piece-Rate Wage Modeler Converts completed bundle tickets into operator earnings: pieces completed, standard minutes earned, shift efficiency, base piece-rate pay, efficiency bonus above the threshold, the payable amount against the guaranteed wage and the effective hourly rate. Shift Earnings /shift
- Cut-to-Box Lead Time & Stage WIP Velocity Calculator Measures how long a cut panel takes to become a packed garment: dwell time in cutting, sewing, finishing and packing separately, total cut-to-box lead time in days and hours, and the share of floor inventory sitting at the worst stage. Cut-to-Box Lead Time days
- Factory Floor Spaghetti Diagram Distance-to-Cost Converter Converts material movement into labour cost: time per trip from distance and handling, daily minutes and distance walked, daily and annual cost of the movement, the share of trip time that is walking, and the saving a target distance reduction would deliver. Annual Cost of Movement /year
- Operator Fatigue & Delay Allowance Ergonomic Modeler Derives a PF&D allowance from the physical work rather than a flat rate: fabric mass handled per cycle, fatigue allowance from that mass, a reach penalty beyond the comfortable envelope, the total allowance, allowed time and the minutes it consumes per shift. Total PF&D Allowance %
- Sewing Needle-Time vs Material Handling Ratio Optimizer Splits a sewing cycle into machine and handling time: actual stitching time from seam length and effective machine speed, total cycle, needle-time and handling shares, and the gain available from doubling machine speed against shaving a tenth off handling. Needle Time Share %
- Stand-up vs Sit-down Modular Cell Output Predictor Models converting a seated line to standing modular cells: adjusted SMV after reduced handling and increased fatigue, output per shift both ways, the output gain, work-in-progress removed and lead time before and after. Output Gain %
- Synthetic SMV Builder from MTM-2 Motion Elements Builds a sewing standard minute value from motion elements without a time study: TMU for GET and PUT motions at the working distance, total motion time, basic time including machine time, the allowed SMV and output per hour. Synthetic SMV min
- Work-Cell Polyvalence & Factory Flexibility Index Quantifies cross-training depth and absence resilience: polyvalence index from the skill matrix fill rate, average skills per operator, trained operators per operation, expected availability after absenteeism, the minimum training required for coverage and the redundancy factor achieved. Polyvalence Index %
Machine Performance & OEE 9
- Downtime & OEE Ledger Premium Builds fleet OEE from a machine register and a downtime log, weighted by planned time rather than averaged across machines, and reports the gap against the flattering average a dashboard usually shows. Ranks the downtime reasons actually logged into a priced Pareto, reconciles the log against recorded machine downtime to expose the stoppage nobody wrote down, and states the prize for reaching a target OEE as output rather than as a percentage. Fleet OEE %
- Air-Jet Insertion Pressure vs Weft Stop Economics Balances compressed air cost against weft stop cost on air-jet looms: stop rate at the chosen pressure, stops avoided per loom hour, extra air consumption and its cost, the value of the stops saved, net benefit per loom hour and across the fleet annually. Net Benefit per Loom Hour /h
- Idle Spindle & Pneumafil Waste Ratio Calculator Separates the two production losses on a ring frame: potential output at full spindle complement, production lost to idle spindles, pneumafil waste from broken ends, good production remaining, and the end-break rate implied per thousand spindle hours. Total Production Loss %
- Knitting Machine Defect-to-Needle Correlation Analyzer Locates the element causing a periodic knitting fault: needle pitch and cylinder circumference, the suspect needle number from a measured line position, defect repeat distance in fabric, defects per metre, course rate and fabric production speed. Suspect Needle Number no.
- Loom Stops per Hundred Thousand Picks (CMPX) Standardizer Standardises weaving stop rates for benchmarking: total picks inserted, overall CMPX and the warp and weft components separately, total stops, machine time lost to them and the efficiency that represents. CMPX stops/100k picks
- MTBF, MTTR & Availability Calculator for Plant Assets Tracks reliability of critical textile plant assets: mean time between failures and mean time to repair from a maintenance record, resulting availability, failure rate per thousand operating hours, the repair time a target availability permits and annual downtime. Mean Time Between Failures h
- Right-First-Time Dyeing Reprocessing Cost Penalty Quantifies the cost of shade failures in a dyehouse: cost of a shading addition and of a strip-and-redye separately, batches failing per month, total reprocessing cost, cost spread across all batches, machine hours consumed and the value of one percentage point of RFT. Monthly Reprocessing Cost /month
- Stenter Oven Capacity & Thermal Bottleneck Modeler Identifies which constraint is choking stenter speed: the maximum line speed allowed by burner capacity, by exhaust moisture removal and by required dwell time, the lowest of the three, plus required burner power and water evaporation rate at the target speed. Maximum Line Speed m/min
- Textile OEE: Availability, Performance & Quality Multiplier Computes overall equipment effectiveness for continuous textile machines: availability from downtime, performance against the ideal rate, quality from defective output, the OEE product and each of the three losses expressed back in minutes. Overall Equipment Effectiveness %
Predictive Maintenance & Spare Parts Physics 9
- Keep, Overhaul or Replace: Machine Decision Sheet Premium Ranks keeping a machine, overhauling it and replacing it on the only basis that compares options buying different numbers of years: the equivalent annual benefit of each. Values the efficiency each option delivers rather than only the maintenance it avoids, credits the resale of what is displaced, and takes the written-down value as an input purely to show that the answer does not depend on it. Row That Wins no.
- Air-Jet Relay Nozzle Wear & Airflow Drop Calculator Models erosion of air-jet relay nozzles: current orifice diameter after a pick count, the resulting orifice area and air flow increase, the jet velocity lost, picks remaining before the replacement threshold and the extra air cost per loom hour. Current Orifice Diameter mm
- Carding Wire Grinding & Replacement Lifespan Predictor Predicts card clothing life from throughput and trash content: the abrasion factor trash imposes, effective life before grinding, total life including permitted grindings, share of life consumed, and the cotton and days remaining before the next grind. Remaining Wire Life kg
- Circular Knitting Cam & Sinker Lubrication Optimizer Balances metal protection against oil staining on circular knitting machines: film demand from needle count and speed, centrifugal throw-off from surface speed and viscosity, the feed rate actually required, surplus over it, a staining risk index and oil consumed per shift. Required Feed Rate mL/h
- Cot & Apron Buffing Frequency to Uster Unevenness Modeler Schedules cot buffing against yarn quality: current Uster unevenness from hours run, hours until the quality limit is reached, unevenness at the scheduled buffing interval, the interval quality actually requires, permanent creep per cycle and cycles before the cot must be replaced. Current Unevenness CV%
- Dyehouse High-Temperature Pump Cavitation & NPSH Margin Assesses cavitation and seal failure risk on high-temperature dyeing pumps: liquor vapour pressure by Antoine, net positive suction head available, the margin over what the pump requires, the highest safe liquor temperature and the suction pressure a zero margin would need. NPSH Margin m
- Rapier Tape & Gripper Head Fatigue Cycle Counter Sets a safe replacement interval for carbon-fibre rapier tapes: bending strain over the drive wheel, the life factor that strain implies, cycles to failure, cycles accumulated per week and the weeks and picks remaining before replacement. Cycles to Failure million
- Sewing Machine Rotary Hook Timing & Tension Drift Modeler Predicts when a lockstitch machine needs service: speed acceleration factor, hook timing drift and thread tension drift accumulated over running hours, current working tension, and the hours until each tolerance is reached. Hours to Service h
- Sizing Cylinder Non-Stick Coating Degradation Predictor Predicts when a sizing cylinder coating will fail: mechanical wear from yarn contact adjusted for pressure, thermal cycling wear, total loss and thickness remaining, and the operating hours left before the coating reaches its failure thickness. Remaining Coating Thickness µm
Production Planning & Sequencing 14
- Lead Time Under Load: What the Next Order Costs Every Other Order Premium Estimates the lead time a factory actually delivers, including the waiting that deterministic capacity loading cannot see, using Kingman's approximation at each work centre. Reports how much of the lead time is queue rather than work, how many more orders a week can be taken before a centre saturates, and what the next orders add to the lead time of every order already accepted. Lead Time Actually Delivered days
- Machine Loading Plan Premium Loads an order book onto the lines that must make it, in minutes rather than pieces, and sequences it earliest-due-date first so the answer is a date and not a volume. Reports utilisation against real capacity beside nominal, names the orders that will miss and by how many days, and prices the shortfall as overtime or the surplus as idle capacity. Utilisation of Real Capacity %
- Order Acceptance Under a Binding Constraint Premium Chooses which orders to accept when the book is bigger than the capacity, by ranking them on contribution per hour of the resource that binds rather than on margin. Runs both rules over the same book and prices the difference, names which orders change place between them, and reports for every refused order whether it failed on rate or merely on fit. Cost of Ranking by Margin cost
- Sets, Not Pieces: What a Kit Ships and What Is Stranded Premium Counts a made-up programme in sets rather than in pieces, so the yield on one component is charged against every other. Reports what can ship, what is stranded and what it is worth, which component binds and which binds after it, and whether one more of the constraining piece is worth making. What Closing to the Next Constraint Is Worth cost
- Time & Action Calendar Premium Schedules an order backward from its ship date through a chain of milestones, giving every activity a latest start and latest finish in working days before shipment, loading the booked durations with the overrun they historically carry, and naming the milestones that are already behind on the day the order is confirmed. Slack Against the Ship Date days
- Blowroom Blend Changeover Transition Waste Modeler Predicts transition waste when a blowroom line changes blend: hold-up turnovers needed to reach blend tolerance, transition time, off-specification mass produced, the share reclaimable into lower grades and the net cost of the changeover. Off-Specification Mass kg
- Daily Takt Time & Factory Shift Output Modeler Matches a delivery deadline to factory capability: required daily output and takt time from the order and calendar, operators the SMV demands, daily capacity from the operators assigned, the resulting surplus or shortfall and days to complete. Takt Time min
- Dyehouse Light-to-Dark Sequencing & Wash-down Saving Quantifies the gain from ordering dye batches light to dark: total wash-down time sequenced against unsequenced, machine time saved per cycle, water and chemical avoided and the weekly hours recovered. Machine Time Saved per Cycle min
- Garment Cut-Plan Size & Colour Grouping Optimizer Plans multi-size, multi-colour cutting: distinct markers required across the colour and size matrix, garments obtained per lay, total lays for the order, fabric consumed with grouped markers, and the fabric and value saved against cutting each size alone. Lays Required no.
- JIT Yarn Feed Rate vs Loom Weft Depletion Calculator Synchronises spinning output to weaving consumption: weft demand per loom and across the shed, packages consumed per day, the balance against mill output, buffer stock for a chosen cover and how often each loom needs a fresh package. Shed Weft Demand kg/day
- Loom Allocation Matrix & Contribution per Machine Hour Compares fabric order allocation across loom types: metres per hour on air-jet and rapier from insertion rate and pick density, contribution per machine hour on each, the margin advantage of the better choice, width utilisation and machine hours to complete the order. Best Contribution per Hour /h
- Multi-Style Line Changeover Penalty & Recovery Curve Models the efficiency loss when a sewing line switches style: current efficiency at a point on the recovery curve, units needed to reach a target efficiency, production lost to the ramp, changeover downtime cost and the full cost of the change. Efficiency Now %
- Rotary Printing Screen Setup & Washdown Time Predictor Exposes hidden downtime in rotary printing: screen setup and washdown time driven by colour count, actual printing time, total job time, the productive share of it, effective speed across the whole job and the run length at which printing finally outweighs setup. Total Job Time min
- Sizing Batch Washout & Size Box Changeover Optimizer Decides between displacement and draining at a size box changeover: box turnovers and volume needed to bring the recipe inside tolerance, washout time, the drain-and-reheat alternative, time saved and the size liquor a drain would have discarded. Displacement Time h
Quality Systems, Traceability, Utilities & Factory Decisions 14
- Make or Buy: Subcontract Decision Sheet Premium Compares a subcontract quotation against the cost that actually leaves the building rather than against the fully absorbed one, which is the comparison that reverses the decision. Asks of every cost line how much of it is genuinely avoidable, totals the fixed cost that would be stranded on everything else the factory makes, adds the freight and rejection that sending work out carries, and returns the price at which the decision is genuinely neutral. True Impact of Subcontracting cost/pc
- Boiler Heat Balance, Blowdown Loss & Flash Recovery Builds the boiler heat balance from steam demand and feedwater temperature, adds the blowdown heat loss, converts the total to fuel and cost per tonne of steam, and returns the make-up water and the flash steam a condensate return would yield. Cost per Tonne of Steam cost/t
- Control Chart Selector, Shewhart Limits & Detection Power Builds Shewhart control limits from baseline subgroup data using the published d2 and d3 constants, reproducing A2, D3, D4, B5 and B6 exactly, names the chart the subgroup size demands, and reports how many subgroups the chart needs to catch a stated shift and how much wider the limits would be if the overall standard deviation were used instead. Upper Control Limit, Mean Chart units
- Corrective & Preventive Action Effectiveness Tracker Tests a CAPA closure against the sampling error of its own verification window: baseline and verified nonconformity rates, the one-sided confidence limit on the post-action rate, the reduction that limit actually defends, the sample size and elapsed days needed to prove the closure target, and the payback booked at the proven rate rather than the observed one. Demonstrated Effectiveness %
- Cost of Poor Quality Ledger: Prevention, Appraisal, Internal & External Failure Splits annual quality spend into the four ISO 9004 categories, expresses the total as a share of turnover, and reports the diagnostic ratios - appraisal against prevention, prevention against failure, external against internal - then sizes the saving available from rebalancing towards prevention. Cost of Poor Quality % of turnover
- End-to-End Lot & Roll Traceability Depth and Recall Exposure Multiplies the fan-in of every blending step from bale laydown to cut lay to show how much finished product one contaminated lot implicates, converts that mass into units and cartons, and contrasts the pull a complete record chain permits against the whole shipping window a broken chain forces you to quarantine. Units to Quarantine units
- Energy Meter Allocation per Good Kilogram or Metre Brings the electricity, steam, direct-fired gas and compressed air meters onto one kWh basis, converts metered steam back to the fuel that raised it so the boiler house and the steam mains sit inside the boundary, then allocates the site total across saleable output, scrapped output and standby hours to give an ISO 50001 energy performance indicator per good kilogram and per good metre. Energy per Good Kilogram kWh/kg
- Industry 4.0 Maturity: Weighted against Constrained Scores digital maturity two ways - the weighted average an assessment usually reports and the minimum the dependency chain actually permits - and reports the overstatement between them, the limiting layer and the levels of investment a target implies. Constrained Maturity level
- Mill Water Balance against a Specific-Consumption Benchmark Separates process demand from fresh intake through the recycle loop, closes the balance across evaporation, effluent and discharge, and compares specific consumption against a benchmark to give the saving available and the recycle rate that would match it. Specific Fresh Intake L/kg
- Preventive Maintenance Interval Optimizer (Weibull Age Replacement) Finds the age-replacement interval that minimises long-run maintenance cost per operating hour for a Weibull-distributed wear-out failure, compares it against your current interval and against running to failure, and reports the annual saving and the unplanned stops avoided across the fleet. Optimal Replacement Interval hours
- Process Capability Cp, Cpk, Pp, Ppk & Specification Fit Separates short-term from long-term capability on any measured characteristic: estimates the within-subgroup standard deviation from the mean subgroup range as Rbar / d2, computes Cp and Cpk against it, computes Pp and Ppk against the overall standard deviation of every reading, reports the gap between the two pairs, the expected nonconforming rate in ppm and a lower confidence bound on Cpk. Cpk, Within-Subgroup Cpk
- Production Schedule Capacity & Constraint Solver Loads one fabric order against the machine hours three work centres actually offer inside the due-date window: percentage load at weaving, dyeing and finishing, which centre binds, the schedule slip in days, the machine hours short at the constraint, the quantity that genuinely fits the window and the whole dyeing batches the order mass forces. Schedule Slip days
- Rolled Throughput Yield, First-Pass Yield & the Hidden Factory Multiplies stage-by-stage first-pass yields through a spinning to finishing chain into a rolled throughput yield, compares it against the final yield that rework achieves, and sizes the hidden factory - the units that only shipped because they were processed twice. Rolled Throughput Yield %
- Spare Parts Reorder Point, Safety Stock & Economic Service Level Sets the reorder point for a discrete spare from an exact Poisson model of demand during the lead time, compares the policy service level against the economically optimal one derived by marginal analysis, and reports what the gap between them costs a year. Reorder Point at the Policy Service Level units
Supply Chain, Inventory & Logistics 13
- Air, Sea or Split: Late Shipment Expedite Sheet Premium Decides style by style which lines on a late packing list earn air freight, by weighing the late-delivery discount each style avoids against what flying it actually costs on chargeable weight. Reports the value per chargeable kilogram each style carries against the value it would need to carry, and what choosing style by style is worth against flying the whole order. Worth of Choosing Style by Style cost
- Dual Sourcing: What a Second Supplier Protects Premium Values a split supply book on what a surviving supplier could actually deliver rather than on the fact that a second one exists. Reports the exposure each supplier failing would leave, the share the others must already hold for a survivor to cover the whole requirement, and the failure probability at which the premium being paid would be justified on expected value alone. What the Arrangement Costs Beyond What It Protects cost/yr
- Fabric & Trim Booking Sheet Premium Books every fabric and trim on one sheet: requirement against supplier minimum, the value of the material the minimum forces you to buy and will never be cut, and the float each item has against the cut date once approvals, the working week and a safety buffer are taken out. Total Booking Value cost
- Fabric Sourcing Comparison Premium Reduces competing fabric offers to one comparable figure - landed cost per garment - through usable width against the marker, GSM and width for goods quoted per kilogram, duty on the delivered value, residual shrinkage and end loss. Names the offer that wins per metre beside the offer that wins per garment, and prices the difference across the order. Best Cost per Garment cost/pc
- Fabric Stock Ageing, Provision & Clearance Sheet Premium Answers the two different questions a fabric store has to answer about the same shelf: what the stock is worth today, which is the provision, and whether each lot should be cleared or kept, which is a forward comparison against the cost of keeping it. Values a lot that will be used at what replacing it would cost and a lot that will not at what it will fetch, because those are different numbers and the gap between them is the decision. Provision Required cost
- Risk Pooling & Postponement: Dye to Forecast or Dye to Order Premium Compares holding a range as dyed fabric in every colour against holding it as pooled greige and dyeing to order. Combines the colour buffers through their variances with an average demand correlation, prices the capital and obsolescence that pooling releases, and sets it against the cost of dyeing in smaller, more frequent lots. Working Capital Released by Pooling cost
- Cotton Bale Micronaire & Staple Blending Laydown Calculator Builds a consistent cotton laydown from two lots: the blend fraction and bale count from each lot to hit a target micronaire, the resulting staple length and strength, laydown micronaire standard deviation and how many sigma of tolerance that leaves. Lot A Share of Laydown %
- Dye & Chemical Shelf-Life Degradation & Re-titration Modeler Predicts loss of dye strength in storage: degradation rate after temperature correction, strength remaining now, the corrected dose needed to reach the original shade, the percentage dose increase and shelf life remaining against a strength limit. Current Dye Strength %
- Economic Order Quantity for Seasonal Yarn Sourcing Sizes yarn purchase batches: holding cost per kg including moisture loss, economic order quantity, orders per year, annual ordering and holding costs, total inventory cost and whether a bulk discount threshold beats the EOQ. Economic Order Quantity kg
- Fabric Roll Container Loading & Volume Optimizer Maximises fabric rolls per shipping container: rolls per layer, layers achievable with hexagonal nesting, the load limited by volume against the load limited by payload, volume and payload utilisation and the weight actually shipped. Rolls per Container rolls
- Garment Assortment Pack-Ratio Generator Builds a ratio pack from retail size demand: garments of each size per master carton by largest remainder allocation, the largest deviation from the demand curve, cartons required for the order and the biggest size overage it creates. Largest Size Deviation points
- Greige Fabric Warehouse Aging & Yellowing Predictor Models yellowing of unfinished fabric in uncontrolled storage: acceleration factors from temperature, humidity and residual size, the yellowing rate they produce, current b* value, months until the acceptance limit and whether stock is already overdue. Current Yellowness b*
- Yarn Cone Palletizing Geometry & Load Optimizer Plans stable yarn cone stacking: cones per layer on the pallet footprint, layers within the height limit, total cones and pallet weight, footprint utilisation and the cone count a weight limit would allow. Cones per Pallet no.
Textile Machinery Kinematics & IoT Analytics 5
- IoT Weft Stop-Motion Sensor False Positive Rate Optimises optical weft-break sensor sensitivity: false positive probability and false stops per hour and per shift, missed detection rate on real breaks, distribution separation index, threshold position in standard deviations and production time lost to spurious stops. False Stops per Hour no.
- Knitting Cylinder Thermal Expansion vs Needle Jamming Predicts running-clearance loss from differential heating on a circular knitting machine: diametral growth of cylinder and cam ring separately, radial clearance consumed, clearance remaining at temperature and the temperature difference that closes the fit entirely. Remaining Radial Clearance mm
- Loom Sley Acceleration Profile & Frame Loading Profiles the inertial loading a reciprocating sley imposes: peak acceleration at front dead centre in m/s² and g, peak inertial force, the smaller back dead centre force, the alternating component driving frame fatigue and the oscillation frequency. Peak Inertial Force kN
- Spinning Spindle Vibration Resonance & Critical Speed Identifies the resonant danger band of a spinning spindle: first critical speed from mass and bearing stiffness, operating speed ratio, dynamic amplification and whirl amplitude at running speed, the amplitude that would occur at resonance and the speed band to pass through quickly. First Critical Speed rpm
- Stenter Chain Lubrication Consumption vs Oven Temperature Optimises automated chain oil dosing on a stenter: consumption acceleration with oven temperature, dose required to keep the chain lubricated, margin against the dripping threshold, the highest oven temperature that still allows adequate lubrication, oil per shift and chain circuit time. Required Oil Dose mL/h
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Nonwovens & Technical Webs
Filtration, Separation & Gas Dynamics · Medical, Hygiene & Barrier Textiles · Nonwovens & Technical Textiles · Nonwovens, Filtration, Hygiene & Technical Webs
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Filtration, Separation & Gas Dynamics 5
- Baghouse Filter Cake Pressure Drop & Pulse Timing Models dust collector resistance between cleaning pulses: media and cake pressure drop separately, areal dust loading, total drop at the current point in the cycle, time until the pulse-jet trigger point and the fan power the resistance costs. Total Pressure Drop Pa
- Coalescing Filter Liquid-Liquid Separation Efficiency Models water removal from fuel through a nonwoven coalescer: separation efficiency and penetration through the bed depth, outlet water concentration, water removed, the bed depth a target outlet requires and droplet residence time. Separation Efficiency %
- Electrostatic Charge Decay in Synthetic Filter Media Predicts electret filter ageing: humidity-adjusted charge decay time constant, charge remaining after storage, filtration efficiency now against as-manufactured, penetration and the storage time at which efficiency falls below a required threshold. Current Efficiency %
- HEPA Filter Pleat Geometry to Airflow Optimisation Optimises pleat packing in HVAC and HEPA filters: media area gained from the pleat ratio, media face velocity, media and inter-pleat channel pressure drops separately, total resistance and the pleat pitch that minimises it. Total Pressure Drop Pa
- PTFE Membrane Gas Permeation Rate & Enrichment Calculator Predicts flow through gas separation membranes: permeance in GPU from permeability and thickness, driving force, permeate volumetric flow and specific flux, and the permeate purity and enrichment a given selectivity achieves in one stage. Permeate Flow m³/h
Medical, Hygiene & Barrier Textiles 6
- Absorbable Suture Tensile Degradation Calculator Models first-order hydrolytic strength loss in absorbable sutures: tensile retained at a given time in vivo, the retention percentage, the day the suture falls below its minimum useful strength and the margin that leaves. Tensile Retained N
- Bandage Stretch, Layers & Sub-Bandage Pressure Calculator Converts applied bandage tension and layer count into sub-bandage pressure by Laplace's law, with the shortfall against a target compression class and the number of layers that target actually requires. Sub-Bandage Pressure mmHg
- Dialysis Hollow Fibre Membrane Permeability & Ultrafiltration Models a hollow fibre dialyser: membrane area from fibre geometry and count, hydraulic permeability from pore radius and wall structure, the ultrafiltration flux at a working transmembrane pressure and the resulting KUf coefficient. Ultrafiltration Rate mL/h
- Diaper Core SAP Swelling & Capacity Under Load Calculator Sizes an absorbent core from its SAP and fluff content: free swell capacity, capacity under load, the fluff contribution, the swelling ratio of the gel and how much of the loaded capacity a given insult series consumes. Core Capacity Under Load g
- Spunlace Wipe Liquid Retention & Release Calculator Measures wet wipe performance from dry and wet weights: liquid retention capacity, lotion add-on, the margin before the pack drips, and how much of the load is released under pressure against how much stays in the wipe. Liquid Retention Capacity g/g
- Surgical Gown Hydrostatic Head & Seam Failure Predictor Compares surgical gown fabric and seam hydrostatic head against a required barrier level, identifies which is the weakest link, and converts the limiting value into pressure units with the margin each element actually holds. Governing Hydrostatic Head cm H₂O
Nonwovens & Technical Textiles 9
- Nonwoven Line Product Mix & Contribution per Line Hour Premium Ranks what a nonwoven line should make by what it returns per hour rather than per square metre, which on a capacity-constrained line is usually the opposite order. Works out the mass rate each basis weight can actually reach, flags the light products where the line speed binds before the throughput rating does, and prices the difference between the two rankings across the hours available. Best Contribution per Line Hour cost/h
- Ballistic Aramid Plies to V50 Velocity Modeler Estimates the V50 limit velocity of a multi-ply aramid pack from ply count, fabric areal weight and specific energy absorption, and works backwards to the plies needed for a target V50, with pack areal density and panel mass. Estimated V50 m/s
- Geotextile Soil Retention (AOS) & Permittivity Predictor Checks a filtration geotextile against both governing criteria: the retention ratio of apparent opening size to soil D85, and the permeability ratio against the soil, with permittivity and the flow rate the fabric will pass at the design head. Retention Ratio (O95 / D85) ×
- Meltblown Pore Size & Filtration Pressure Drop Modeler Models meltblown filter media from fibre diameter, basis weight and thickness: web solidity, mean flow pore size by Wrotnowski's model, Davies pressure drop at the test face velocity, specific surface area and fibre length per square metre. Mean Pore Size µm
- Multi-Insult Strike-Through & Rewet Calculator Models repeated-insult performance of hygiene coverstock: strike-through time for the final insult, cumulative strike-through across the series, acquisition rates for the first and average insult, and rewet as a share of the liquid delivered. Final Insult Strike-Through s
- Needle Punching Density & Penetration Depth Tool Calculates punch density per square centimetre across all needle boards from stroke rate, needle density and web advance, with advance per stroke, engaged barbs at the working penetration depth, and line output in area and mass. Punch Density punches/cm²
- Spunbond Throughput to Web GSM Calculator Matches spunbond polymer throughput to collector belt speed: web areal weight, total line throughput, filament denier from the take-up speed, hole count across all beams and the area produced per hour. Web Areal Weight g/m²
- Spunlace Water Pressure, Flow & Specific Energy Calculator Turns spunlace jet-bar settings into the numbers that actually predict web strength: jet velocity, total water flow, hydraulic and pump power, specific energy per kilogram of web and water consumed per kilogram. Specific Energy kJ/kg
- Thermal Bonding Calender Nip Pressure & Dwell Time Calculator Calculates calender nip dwell time, nip pressure from line load, total nip force and the thermal diffusion depth reached in the dwell, against the melting threshold of a bicomponent sheath polymer. Nip Dwell Time ms
Nonwovens, Filtration, Hygiene & Technical Webs 10
- Reusable Against Disposable: What a Textile Costs per Use Premium Costs a reusable textile pool against its disposable equivalent on the uses a garment actually delivers rather than the wash life on the label. Reports the ceiling that per-cycle loss imposes on any rating, the attrition at which each item stops being worth reusing, and how much of a claimed saving the rated-life calculation invented. What the Rated-Life Case Invents cost/yr
- What Barrier Level Your Data Will Defend Premium Turns the impact penetration, hydrostatic head and viral challenge results behind a surgical gown or drape into the barrier level those results will actually defend, fabric by fabric, using a tolerance bound rather than an average. Reports which fabrics are claiming more than their own data supports, which are being sold below what they can prove, how many further specimens would close the gap, and which gaps no sample size will close. What the Levels You Defend But Do Not Claim Are Worth cost/yr
- Airlaid Latex Binder Make-Up & Drying Load Works a dry binder add-on backwards through application efficiency and emulsion solids to the wet spray required per side, and reports the water the oven has to remove, the finished basis weight and the binder lost to overspray every hour. Wet Spray Required g/m2
- Crosslapper Mass Balance, Layer Count & Lay Angle Balances card web against batt output to give the batt basis weight and layer count, then derives carriage traverse time, strokes per minute, the advance between strokes and the lay angle that sets cross-direction orientation. Batt Basis Weight g/m2
- Filter Media Efficiency, Resistance & Quality Factor Relates basis weight, fibre diameter and face velocity to penetration, filtration efficiency and pressure drop, returns the quality factor that compares media independently of weight, and shows what reaching a target efficiency costs in grams and in pascals. Quality Factor 1/Pa
- Meltblown Air-to-Polymer Ratio & Fibre Diameter Converts die geometry and throughput per hole into polymer output, sets it against the process air mass flow to give the air-to-polymer ratio that governs attenuation, and returns the fibre diameter, web basis weight and blower duty that follow. Air-to-Polymer Ratio kg/kg
- Roll Build, Splice Count & Converting Yield Computes wound length and weight from roll geometry and caliper, counts the splices a given parent-roll interval forces into it, and reports the web those splices waste, the downtime they cost and the availability lost on the converting line. Wound Length m
- SMS Layer Balance: Barrier Against Strength Splits a fixed SMS basis weight between spunbond and meltblown, returns the hydrostatic head and tensile strength each split delivers along with the material cost, and solves for the meltblown grams a target barrier actually needs and what that leaves for strength. Hydrostatic Head mbar
- Spunbond Spinline Draw-Down & Aerodynamic Drag Derives filament velocity and diameter from throughput per hole and target denier, compares them with extrusion velocity to give the draw-down ratio, and computes the slip velocity and aerodynamic drag the aspirator air actually delivers. Draw-Down Ratio x
- Wetlaid Headbox Flow, Jet-to-Wire Ratio & Crowding Number Derives the stock flow a basis weight and wire speed demand, the jet velocity the slice delivers and whether it drags or rushes the wire, then computes the Kerekes crowding number and the consistency that would bring it back to a target. Crowding Number N
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tools
Smart & Electronic Textiles
E-Textiles, Smart Wearables & Biomimetics · Smart Textiles & E-Textiles
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E-Textiles, Smart Wearables & Biomimetics 5
- Biomimetic Shark-Skin Riblet Hydrodynamic Drag Reduction Models riblet surfaces on competitive swimwear: riblet spacing in wall units, skin friction coefficient and wall shear at race pace, achievable drag reduction, force saved over the covered area and the resulting time gain over a race distance. Drag Reduction %
- Conductive Trace Wash-Cycle Fatigue & Resistance Growth Predicts degradation of silver-printed circuits through laundering: resistance after a given number of wash cycles, the growth ratio against the as-printed value, cycles to a defined failure threshold, life remaining and the added voltage drop and dissipation the growth causes. Resistance After Washing Ω
- Heated Garment Joule Heating Battery Life & Wattage Balances carbon-fibre heating elements against battery capacity: element current and power draw, heated power density, runtime at the chosen duty cycle, the steady temperature rise the garment insulation supports and total stored energy. Battery Runtime h
- Textile Triboelectric Nanogenerator Output Voltage & Power Estimates harvesting from fabric layers separating during walking: open-circuit voltage, charge transferred per step, energy per cycle, average and usable electrical power, device capacitance and the load impedance that actually extracts it. Open-Circuit Voltage V
- Wearable Antenna Fabric Permittivity & Patch Dimensions Sizes a textile microstrip patch antenna: radiating patch length and width, effective permittivity, fringing extension, fractional and absolute bandwidth, and the resonance shift when body pressure compresses the fabric substrate. Patch Length mm
Smart Textiles & E-Textiles 4
- Conductive Yarn Resistance & Voltage Drop Calculator Calculates conductive yarn trace resistance, voltage drop and power dissipated at a working current, the voltage left at the load, and the longest trace a stated voltage budget will support. Voltage Drop V
- E-Textile Strain Sensor Resistance & Resolution Modeler Models a knitted piezoresistive strain sensor: resistance under strain, the change and sensitivity it delivers, the voltage swing through a matched divider and the finest strain the ADC can resolve. Resistance Under Strain Ω
- PCM Thermal Buffer Capacity & Duration Calculator Calculates the heat a phase change material garment can absorb — latent and sensible — and converts it into the minutes of buffering it actually provides against a wearer's excess metabolic heat load. Buffering Duration min
- Piezoelectric Fabric Energy Harvesting Estimator Estimates usable electrical output from a piezoelectric fabric patch: energy per strain cycle after conversion and storage losses, continuous power at a walking cadence, energy per hour and time to charge a target store. Continuous Power µW
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Spinning & Yarn
Advanced Spinning, Texturizing & Twisting · Blowroom, Carding, Drawing & Roving Control · Spinning, Winding & Yarn Package Engineering · Yarn Spinning & Preparation
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Advanced Spinning, Texturizing & Twisting 11
- What Twist Multiplier to Spin At Premium Balances the production a ring frame gives up for every turn of twist against the end breakage it buys back, quality by quality, and holds the answer above the strength the yarn is actually sold on. Reports which qualities are worth twisting harder, which softer, which are being spun below their own specification, and how many extra breaks a tenth of twist may cost before it stops paying. What Setting the Twist Properly Is Worth cost/yr
- Comber Noil Extraction Optimizer Runs a short-fibre mass balance across the comber to show what a chosen noil percentage actually buys: residual short fibre in the combed sliver, removal efficiency, machine output and the raw-material cost per kilogram of combed sliver. Residual Short Fibre in Sliver %
- Cop Building Motion & Traverse Speed Optimizer Derives the ring rail traverse speed needed to build a cop at a chosen coil pitch, from spindle speed, twist level, chase length and ring diameter, with the coils per layer, yarn laid per layer and chase time. Ring Rail Traverse Speed mm/min
- DREF Friction Spinning Core-to-Sheath Ratio Tool Splits a target core-spun technical yarn into its core and sheath linear densities, derives the draft each feed sliver must run at, and returns production per position for DREF friction spinning. Sheath Draft ×
- DTY Crimp Rigidity & Contraction Estimator Converts the three skein lengths of the DIN 53840 crimp test into crimp contraction, crimp rigidity, crimp stability and bulk factor for draw-texturized filament yarn, with linear density per filament. Crimp Rigidity %
- False Twist Texturizing Surge Speed Calculator Finds the yarn speed at which a friction false-twist unit loses twist stability, from disc diameter, disc rpm and the working disc-to-yarn speed ratio, with the inserted twist level, yarn diameter and throughput at the limit. Surge Speed m/min
- Hairiness to Singeing Intensity & Gas Demand Matcher Converts the required drop in Uster hairiness index into singeing energy per square metre, burner heat load, gas flow per burner and gas consumed per kilogram of fabric, at a given cloth speed, width and areal weight. Gas Flow m³/h
- Melange Yarn Fibre Blending Ratio Calculator Converts a target melange shade percentage into the dyed and white fibre weights to actually issue, grossing each component up by its own process loss, and checks the recipe against the integer sliver doublings available in the draw frame creel. Dyed Fibre to Issue kg
- Spindle Wharve, Tape Speed & Slippage Calculator Calculates tape surface speed and the theoretical spindle speed from drive cylinder and wharve diameters, then quantifies belt slip against a measured spindle speed and converts that loss into missing twist per metre. Tape Slip %
- Two-for-One Twister Production & Power Calculator Calculates TFO twisting output per spindle and per machine per shift from spindle speed, twist level and efficiency, then converts connected spindle power into kWh per kilogram and energy cost per kilogram of twisted yarn. Machine Production kg/shift
- Vortex (Air-Jet) Spinning Delivery Speed & Draft Modeler Models a vortex spinning frame: total draft from sliver to yarn count, production per position and per machine at a given delivery speed and efficiency, plus compressed-air consumption and specific air per kilogram of yarn. Machine Production kg/h
Blowroom, Carding, Drawing & Roving Control 14
- What a Kilogram of Waste Costs, Stage by Stage Premium Carries the cost of the fibre through every machine in a spinning line, so that a kilogram of waste can be priced where it actually leaves rather than at the price of cotton. Reports what each stage of waste destroys, how much of it is a quality decision rather than a loss, whether extraction is worth moving earlier or later, and what the true conversion cost per kilogram of yarn is once the shrinking mass is counted. What the Avoidable Waste Costs cost/yr
- Autoleveller Dead Length & Residual Variation Converts measuring-point distance, delivery speed and servo reaction time into the leveller dead time and dead length, derives the shortest wavelength it can correct, and reports the residual sliver CV left after correction. Shortest Correctable Wavelength m
- Blowroom Mass-Flow & Waste Balance Closes the mass balance across a blowroom line: bale feed against opener droppings, cleaner waste, filter dust and invisible loss, then separates the good fibre inside that waste from the trash and prices what is reclaimable. Line Yield to Card %
- Blowroom Waste Cost, Reclaim Margin & Break-Even Recovery Values the blowroom waste stream properly: the good fibre it carries at lint price, the waste itself at its sale price, the net cost of the difference, and the recovery rate at which a reclaim line exactly pays for itself. Net Cost of Waste /h
- Card Nep Removal, Dispersion & Residual Index Closes a nep mass balance across the card: neps entering in the feed, leaving in the sliver, and carried out in flat strips and licker-in droppings. Whatever is missing was opened out by the carding action, and the split between physical removal and dispersion is reported separately. Nep Removal Efficiency %
- Card Production Rate, Total Draft & Flat Waste Converts card delivery speed and sliver linear density into hourly and per-shift production, derives the total draft between lap and sliver, reports cylinder surface speed and the wire points each gram of fibre meets, and nets off flat strips and licker-in droppings. Gross Production kg/h
- Card Sliver Draft, Can Capacity & Change Interval Balances card feed and delivery linear density into a total draft, then sizes the can: capacity from coil volume and packing density, the run time it buys at the delivery rate, changes per hour, cans per shift and the production lost to doffing. Can Run Time min
- Comber Feed, Noil Extraction & Short-Fibre Balance Converts feed per nip and nip rate into lap consumption and combed production across all heads, then closes a short-fibre balance: how much short fibre the noil actually carried away, what is left in the sliver, and how selective the extraction was. Combed Production kg/h
- Drawframe Creel Blend Ratio, Quantum & End-Down Shift Computes the actual mass blend a drawframe creel produces from the ends and linear densities of each component, the deviation from target, the linear density one component would need to hit target exactly, and how far the blend moves when a single end goes down. Actual Blend of A %
- Drawframe Draft, Doubling & Drafting-Wave Decomposition Splits drawframe total draft into break and main draft, computes the limit irregularity from the number of fibres in the sliver cross-section, and decomposes the measured output CV into the part doubling explains and the drafting-wave residual that setting changes can actually reach. Drafting-Wave CV %
- Opening Intensity, Beater Tip Speed & Cleaning Selectivity Converts beater speed, blade count and feed rate into strikes per kilogram and blade tip speed, reports the degree of opening achieved, and balances trash removed against the good fibre that leaves with it as a selectivity index. Opening Intensity strikes/kg
- Roving Bobbin Build, Doff Interval & Changeover Loss Converts roving bobbin geometry into mass and roving length, then into the doff interval at the delivery speed, the production lost to doffing, doffs per shift and the effective output once the changeover is counted. Doff Interval min
- Roving Twist Multiplier, Flyer Speed & Production Converts roving linear density and twist multiplier into twist per inch and per metre, the flyer speed the delivery demands, the roving diameter and surface twist angle, and production per spindle and per frame. Flyer Speed rpm
- Sliver Coil Geometry, Can Packing Density & Capacity Derives sliver diameter from linear density and strand bulk density, computes the centre hole that a given coil diameter leaves in the can, and converts the usable annulus into capacity, sliver length, coiler speed and can run time. Can Capacity kg
Spinning, Winding & Yarn Package Engineering 17
- What a Yarn Clearer Setting Is Worth Premium Prices a clearer trial against everything the yarn becomes, so that the setting on the winding machine is chosen rather than inherited. Costs each candidate setting in drum time, waste and splices that fail downstream against the faults it lets through, hands back the fault value at which tightening pays, and shows what a single setting shared across four end uses is costing when each of them wants a different one. What Setting the Clearer Properly Is Worth cost/yr
- Air-Jet & Vortex Spinning Production, Air Demand & Energy per Kilogram Converts air-jet or vortex delivery speed and yarn count into production per position and per machine, then totals the compressed-air demand, the compressor power behind it, and the energy and cost that air adds to every kilogram of yarn. Compressed-Air Energy per Kilogram kWh/kg
- Compact Spinning Suction Airflow, Fan Power & Energy Cost Converts per-spindle compacting airflow and suction pressure into fan shaft power through the fan and motor efficiencies, then reports specific power per spindle, energy per kilogram of yarn, and the annual energy and cost of running the compacting system. Fan Electrical Power kW
- Cone Package Density, Volume & Dye Penetration Margin Computes package volume as the conical frustum a cone actually is, gives the packing density from the wound mass, the yarn length it holds, the build thickness and cone taper angle, and the margin against the maximum density that package dyeing allows. Package Density kg/m3
- Core-Spun Yarn Core Ratio, Sheath Cover & Stretch Potential Converts elastane supply count and core draft into the delivered core linear density inside the yarn, the core ratio by mass, the sheath that surrounds it, and the wall thickness of cover that separates the core from the yarn surface. Core Ratio by Mass %
- Ring Spinning Tension, End Breakage Rate & Efficiency Loss Derives spinning tension from traveller mass, ring diameter and spindle speed through the centrifugal balance, compares it with the yarn strength as a tension ratio, and converts a breakage rate per thousand spindle hours into piecings, lost spindle time and efficiency. Spinning Tension as a Share of Yarn Strength %
- Ring-Frame Drafting Zone Settings & Irregularity Floor Derives ring-frame total and main draft from roving and yarn linear density, checks the front control distance and back zone setting against effective fibre length, and computes the limit irregularity from the number of fibres in the yarn cross-section. Main Draft x
- Rotor Spinning Twist, Peripheral Speed & Production Window Links rotor speed and delivery speed to twist per metre and twist multiplier, computes rotor peripheral speed and the centrifugal acceleration at the rotor groove, checks rotor diameter against fibre length, and reports production per rotor and per machine. Twist tpm
- Siro Spinning Strand Spacing, Convergence Angle & Twist Balance Converts siro strand spacing and convergence height into the convergence angle at the spinning triangle, reports the strand linear density and diameter, the spacing-to-diameter ratio, and the twist each strand receives about its own axis. Convergence Angle deg
- Wind Ratio & Patterning Risk on a Drum Winder Computes package speed and wind ratio at a given build diameter, finds the nearest low-order ratio that would produce ribboning, reports the distance to it as a risk figure, and gives the package diameter at which that pattern band actually falls. Wind Ratio x
- Winding Production, Splice Loss & Effective Drum Efficiency Converts winding speed and yarn count into gross drum output, then subtracts the time lost to clearer cuts and package doffing to give the net production per drum and per machine, the splice count per package and the effective efficiency. Net Production per Drum kg/h
- Yarn Clearer Cut Rate, Splice Load & Clearing Efficiency Totals clearer cuts across the thin, thick, nep and foreign-fibre channels, converts them into cuts per hour, splices per package, production time lost and yarn wasted, and reports what share of the faults present is actually being removed. Total Cut Rate 1/100 km
- Yarn Splice Strength Retention, Bulk & Weakest-Splice Risk Compares splice breaking force with the parent yarn as a retention percentage, reports the diameter ratio and bulk the splice adds, and derives the weakest splice a package is likely to contain from the splice strength variability. Strength Retention %
- Yarn Strength Distribution, Weak Place & Safety Factor Converts mean single-end strength and its coefficient of variation into strength percentiles, the expected weakest place over a stated length of yarn, and the safety factor against running tension measured on both the mean and that weakest place. Safety Factor at the Weakest Place x
- Yarn Twist Liveliness, Snarling & Residual Torque Converts twist and yarn count into twist multiplier, surface twist angle and a twist-energy index, and predicts the snarls a doubled loop will form from the fraction of twist released - with the effect of steam setting taken out separately. Snarls in the Test Loop turns
- Yarn Vacuum Conditioning: Regain, Weight and Steam Works a yarn batch back to its oven-dry mass, computes the weight at a target regain and at the standard regain, and prices the moisture gained against the steam required to add it. Weight Gained kg
- Yarn Waxing Add-On, Disc Life & Friction Reduction Converts a waxing add-on in grams per kilogram into wax consumed per hour and per package, the running life of a wax disc in hours and in kilograms of yarn, the cost per kilogram of yarn, and the friction coefficient the waxing is bought to achieve. Wax Disc Life h
Yarn Spinning & Preparation 11
- Spinning Mill Feasibility Report Premium Builds a ring spinning project appraisal from spindle count, count and twist through realisation-corrected raw material, conversion cost, an itemised machinery schedule, debt and depreciation, and reports payback on cash accrual beside the EBITDA payback the project was probably sold with. Payback on Cash Accrual years
- Count Strength Product (CSP) Calculator Multiplies lea breaking strength by English count to give the Count Strength Product, the classic single-figure quality benchmark for ring spun cotton yarn, and compares it against a contracted target. Count Strength Product
- Draft & Draft Constant Calculator Works out actual draft from fed and delivered hank with doublings, derives the machine draft constant from the draft change pinion, and compares actual against mechanical draft to expose roller slippage on drawframes, speedframes and ring frames. Actual Draft x
- Resultant Count for Plied & Folded Yarns Calculates the true resultant count of a folded or plied yarn from the singles count and number of plies, including the contraction that twisting introduces, so doubling and costing use the real delivered count. Resultant Count Ne
- Ring Frame Production Estimator Converts ring frame spindle speed, twist per inch, yarn count, efficiency and spindle count into delivery speed and yarn output in grams per spindle hour and kilograms per shift. Output per Shift kg
- Rotor (Open-End) Spinning Production Calculator Calculates open-end rotor spinning output in kilograms per rotor hour and per shift from delivery speed, yarn count, rotor count and efficiency, and derives the twist inserted at a given rotor speed. Output per Shift kg
- Roving Hank to Yarn Count Draft Predictor Determines the total and main draft a ring frame must apply to turn a given roving hank into a target yarn count, and reports the coarsest roving that stays inside the machine draft limit. Total Draft Required x
- Traveller Weight & Ring Diameter Limit Calculator Calculates traveller linear speed and centrifugal force for a given ring diameter and spindle speed, then reports the maximum spindle speed and traveller mass that stay inside safe limits, preventing end breakage and traveller burn-out. Traveller Linear Speed m/s
- Twist Multiplier to TPI & TPM Calculator Converts a twist multiplier into turns per inch and turns per metre for a given yarn count, and reports the tex twist factor, surface twist angle and yarn diameter that follow from it. Turns per Inch TPI
- Universal Yarn Count Converter Converts a yarn count between every major numbering system — English cotton (Ne), metric (Nm), tex, decitex, denier, worsted and jute pounds per spyndle — by routing each value through linear density in tex. Linear Density tex
- Yarn Realization Percentage Tool Calculates yarn realization from raw cotton issued against finished yarn produced, splits the balance into visible waste and invisible loss, and gives the raw cotton needed per kilogram of yarn for costing. Yarn Realization %
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tools
Sustainability & Utilities
Advanced Utility & Power Quality · Sustainability, ETP & Utilities
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Advanced Utility & Power Quality 10
- Captive Solar Against a Three-Shift Load Premium Values a rooftop or ground-mount proposal against the hour-by-hour load it is actually supposed to displace, rather than against annual consumption. Separates the units the mill consumes itself from the units it exports at a fraction of the tariff, reports what the maximum demand charge does as opposed to the energy bill, and sweeps plant size for the band inside which net present value hardly changes. What the Proposal Overstates the Saving By cost/yr
- Mill Power & Utility Load Schedule Premium Turns a department load list into maximum demand, transformer and generator ratings, capacitor requirement and contract demand, prices the energy and demand bill, and returns the specific energy in kWh per kilogram that a feasibility report should be using instead of a benchmark. Transformer Rating kVA
- Time-of-Day Load Shifting & Demand Charge Sheet Premium Tests a proposed load shift against the whole electricity bill rather than the tariff sheet. Prices the units saved by moving a load into a cheaper window beside the maximum demand created by concentrating loads there, reports which window carries the site peak before and after, and names the loads that cannot fit the window they have been assigned to. Net Effect of the Shift cost/mo
- What Power Interruptions Cost, and Which Departments to Back Up Premium Splits the cost of an interruption into the part that scales with its length and the part that does not, department by department, and compares the answer against what an outage log measured in hours implies. Sizes the backup worth installing rather than the backup that covers everything, and prices the same lost hours delivered as fewer and longer events. What Backing Up the Right Departments Saves cost/yr
- Dyehouse Heat Exchanger Fouling & Thermal Loss Predictor Quantifies scaling losses in heat recovery: fouled overall heat transfer coefficient, log mean temperature difference, clean and fouled duty, the share of capacity lost, and the annual energy and cost the fouling gives away. Fouled Heat Transfer Coefficient W/m²K
- Factory Skylight & Lux Distribution vs Inspection Quality Correlates inspection lighting with defect detection: daylight contribution through skylights, total daytime illuminance, detection rate by day and by night, the shift-to-shift detection gap and the extra defects escaping per thousand metres at night. Daylight Contribution lux
- Loom Motor Power Factor Correction Capacitor Calculator Sizes power factor correction for inductive textile loads: capacitor kvar needed to reach a target, apparent power before and after, the kVA and current released, and the utility penalty avoided monthly and annually. Capacitor Bank Required kvar
- Power Factor Correction kVAr Sizing, Demand Saving & Payback Sizes a capacitor bank from the tangent difference between present and target power factor, reports the apparent power removed from the supply, the distribution loss reduction that follows, and the demand charge and penalty the correction stops paying. Capacitor Bank Required kVAr
- Spinning Mill Inverter Harmonic Distortion Power Penalty Costs harmonic distortion from variable frequency drives: true power factor after distortion, additional network losses in kilowatts and kilowatt-hours, the cost of those losses, tariff penalty points above the utility threshold and total annual exposure. Annual Cost of Distortion /yr
- Textile Compressed Air Pipe Network Pressure Drop Modeler Calculates compressed air losses in distribution pipework: air velocity, pressure drop over pipe and fittings, pressure actually reaching the machines, the compressor energy penalty it causes, its annual cost and the pipe diameter a target drop would need. Pressure Drop bar
Sustainability, ETP & Utilities 16
- Marginal Abatement Cost Curve: Which Decarbonisation Projects, and in What Order Premium Builds the abatement curve for a mill sequentially rather than by addition, so each project is priced against the plant the projects ahead of it leave behind. Reports what the list claims against what the plan delivers, how far the reduction that pays for itself actually goes, what the rest costs a year, the capital needed to reach a stated target, and the carbon price at which the whole plan is free. Abatement Counted Twice tCO2e/yr
- Restricted Substance Limit Register Premium Takes your own restricted substance limits and your own test results and does the three pieces of arithmetic that decide whether a lot actually clears: converts a chemical-basis result to what lands on the article, places the expanded measurement uncertainty against the limit rather than the bare number, and sums the families that share a single limit. Reports the lot twice, as read and as it would be read at the buyer laboratory, and prices the retest against the lot. Lot Fails as Read 0/1
- The Audit Fee, and the Cost of Being Audited Premium Costs a whole audit programme rather than its invoices: preparation weeks, the managers tied up on site, production stopped for the walkthrough, corrective actions and the re-audits, against the fees that are the only part anybody budgets. Then prices the part that is a second look at something already audited - the figure a supplier takes to a customer when asking for mutual recognition. Spent Auditing What Was Already Audited cost/yr
- What a Certified Programme Costs, and Why the Delivery Schedule Is the Price Premium Separates the standing cost of a certification - audits, licences, records, transaction certificates - from the segregation cost of running certified goods through a plant that also runs conventional ones. Reports the premium the programme genuinely needs, the certified volume below which no premium can carry it, which stage of the chain is dear and why, and what relaxing the delivery schedule is worth against what arguing about price is worth. What Relaxing the Delivery Schedule Is Worth cost/yr
- Boiler Steam Efficiency & Fuel Ratio Calculator Calculates direct-method boiler efficiency from steam output, steam and feedwater enthalpy and fuel input, with the steam-to-fuel ratio, heat balance, losses and the fuel cost of every tonne of steam generated. Boiler Efficiency %
- Caustic Soda Recovery Plant Efficiency & Payback Modeler Models a caustic recovery plant on a mercerising or denim line: caustic recovered per hour, the strong lye it makes, water the evaporator must remove, steam demand and the net hourly saving after steam cost. Net Saving /h
- Compressed Air Leak Cost Calculator Converts a measured compressed air leakage rate into wasted compressor power, annual energy and cost, the emissions behind it and the cost of every single CFM leaking — the number that justifies a leak survey. Annual Cost of Leakage /yr
- DPP Annex III Readiness Check Scores how many of the twelve elements in Annex III of the Ecodesign for Sustainable Products Regulation you can already produce a document for. Annex III is the menu a future delegated act draws a product passport from; no textile act exists yet, so this reports what you hold, not whether you comply. Annex III Elements Documented % of 12
- Dyehouse RO Recovery & Brine Reject Modeler (ZLD) Runs a salt and flow balance across a dyehouse reverse osmosis stage: permeate and brine flows, the salinity of each, the concentration factor the membranes see, evaporator duty for zero liquid discharge and the net utility cost against fresh water saved. Brine Reject Flow m³/h
- Effluent Colour ADMI Removal, Compliance Margin & Chemical Cost Converts inlet and outlet ADMI colour readings into removal efficiency and the margin against a discharge limit, sizes the coagulant and decolourising agent needed, and reports the chemical cost per cubic metre and the removal each unit of dose buys. Colour Removal %
- ETP Sludge from Solids, Coagulant and Biomass Adds the three sludge streams a textile effluent plant generates - removed suspended solids, coagulant floc and biological yield on removed COD - converts dry solids to wet cake at the achieved dryness, and prices disposal per day and per tonne of fabric. Wet Cake Generated t/day
- Failed Steam Trap Loss, Annual Cost & Survey Payback Applies Napier choked-orifice flow to a failed-open steam trap to give the steam it passes, scales it across the failed population, and converts the loss into annual steam tonnage, cost, boiler fuel, carbon and the payback on a trap survey. Steam Lost per Failed Trap kg/h
- Hydroextraction: G-Force, Residual Moisture & Drying Load Turns basket diameter and spin speed into g-force, converts a residual moisture figure into the water and the energy the dryer inherits, and sets the extractor's own electricity against the drying energy it avoids. Return on Extraction x
- Microfibre Release over a Garment Life Models microfibre shedding as a declining series across launderings, summing lifetime release, splitting it between what filtration captures and what reaches the environment, and scaling both to an annual production volume. Lifetime Release per Garment mg
- Stenter Exhaust Heat Recovery Payback Calculator Sizes a stenter exhaust heat recovery installation: heat available in the exhaust, duty actually recovered at the exchanger efficiency, annual fuel saved after boiler losses, the money that represents, simple payback and avoided CO₂. Simple Payback years
- Total CO₂e Footprint Calculator (Scope 1, 2 & 3) Builds a mill's total equivalent carbon footprint by adding Scope 3 value-chain emissions — purchased fibre, chemicals, freight and waste — to its Scope 1 and 2 totals, with emission intensity per kilogram and the share Scope 3 actually carries. Total Footprint t CO₂e/yr
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Technical & Performance Textiles
Acoustic, Thermal & Metamaterial Textiles · Agrotextiles & Environmental Shielding · Carpet & Floor Coverings · Composites, Aerospace & Automotive Textiles · +5 more
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Acoustic, Thermal & Metamaterial Textiles 5
- Aerogel-Infused Fabric Thermal Conductivity Modeler Predicts the effective thermal conductivity of an aerogel-loaded fabric from its composition: Knudsen-suppressed gas conduction in the nanopores, the aerogel phase conductivity, the blended composite value, thermal resistance and clo for ultra-thin polar and space garments. Effective Conductivity W/m·K
- Automotive Headliner Sound Transmission Loss Predictor Predicts road noise blockage through a multi-layer headliner: total surface mass, mass-law transmission loss, the mass-air-mass resonance the foam core creates, the double-wall gain above it and the acoustic energy that still gets through. Sound Transmission Loss dB
- EMI Shielding Effectiveness of Metal-Coated Fabric Calculates radio and radar attenuation through conductive fabric: skin depth at the operating frequency, reflection and absorption losses separately, total shielding effectiveness in decibels and the field attenuation factor it represents. Shielding Effectiveness dB
- Infrared Signature Suppression & Thermal Contrast Calculator Models night-vision signature suppression: radiant exitance from emitted and reflected components, the apparent temperature a thermal imager reports, thermal contrast against the background, the contrast reduction low emissivity buys and detectability against a sensor threshold. Apparent Temperature °C
- Nonwoven Acoustic Baffle Absorption & Flow Resistivity Models a nonwoven acoustic panel from its fibre geometry: flow resistivity by the Bies and Hansen relation, normalised resistance, cavity reactance, absorption coefficient at a chosen frequency, the quarter-wave peak and total sabins per panel. Absorption Coefficient α
Agrotextiles & Environmental Shielding 5
- Anti-Hail Net Impact Energy & Cable Tension Calculator Models hail striking a tensioned orchard canopy: stone terminal velocity and mass, kinetic energy per impact, peak force from the net deflection, the tension it drives into the support cables and total storm energy per square metre. Impact Energy per Stone J
- Biodegradable Mulch Film Half-Life in Soil Predicts how fast PLA and PHA agricultural films break down: the degradation rate constant after temperature, moisture and thickness adjustment, half-life in the actual soil, mass remaining at the end of the season and time to reach a target residue. Field Half-Life days
- Greenhouse Thermal Screen Energy Saving Percentage Calculates night-time heating savings from an aluminised thermal screen: effective U-value allowing for incomplete closure, heat loss with and without the screen deployed, percentage energy saving, and nightly and seasonal energy saved across the house. Energy Saving %
- Insect Mesh Porosity vs Wind Load Drag Force Balances insect exclusion against structural wind load: mesh porosity and equivalent mesh count from the thread geometry, screen drag coefficient, pressure drop at the design wind speed, total force on the structure and the largest opening an insect must pass. Total Drag Force kN
- Shade Net PAR Transmission & Daily Light Integral Calculates the light actually reaching a crop under agricultural netting: transmitted photosynthetically active radiation, the effective PAR shade as distinct from the rated shade factor, daily light integral, surplus against the crop requirement and the diffuse share the net creates. Transmitted PAR µmol/m²/s
Carpet & Floor Coverings 7
- How Heavy a Carpet Has to Be Premium Separates the two things a carpet specification confuses - the weight of the pile and the density that actually carries the wear class - and prices the difference. Reports the lightest construction that still meets the class at the shortest pile the look allows, which qualities are built below the density their own class requires, and what a slightly thinner class would be worth to negotiate for. What the Weight You Do Not Need Is Worth cost/yr
- Axminster & Wilton Wire Height to Pile Yarn Consumption Synchronises wire height with pattern data on woven carpet looms: yarn taken by each surface tuft, tuft density from rows and frames, total pile yarn per square metre split into surface and buried yarn, and the wire height a finished pile height requires. Pile Yarn per Square Metre g/m²
- BCF Carpet Face Weight, Pile Yarn Consumption & Line Supply Turns tuft density, pile height and yarn count into pile yarn consumption and face weight in both metric and imperial, reports pile density and yarn cost per square metre, and converts a BCF line output in kilograms per hour into square metres of carpet a day. Face Weight g/m2
- Broadloom Latex Backing Coat Weight vs Tuft Bind Strength Optimises latex backing on tufted carpet: tuft bind strength from dry coat weight, margin over the required bind, the coat weight a target bind actually needs, wet pick-up at the given solids, latex per tuft and the drying energy the water carries away. Tuft Bind Strength N
- Carpet Flammability Radiant Panel Critical Flux Predictor Converts a radiant panel burn length into critical radiant flux per ASTM E648: flux in W/cm² and kW/m², margins against the Class I and Class II thresholds, the burn length Class I would require and the fraction of the specimen consumed. Critical Radiant Flux W/cm²
- Carpet Pile Density to Acoustic Absorption & Reverberation Translates carpet pile height, weight and underlay into room noise metrics: estimated NRC, pile bulk density, sabins added by the carpet, reverberation time with and without it, and the resulting steady-state noise reduction in decibels. Estimated NRC α
- Tufting Machine Gauge to Needles per Width & Tuft Density Converts tufting gauge and broadloom width into needle count, needle spacing in millimetres, tufts per square metre from the stitch rate, tufts inserted per minute, fabric take-off speed and area production. Needles Across Width no.
Composites, Aerospace & Automotive Textiles 7
- Carbon Prepreg Resin Content & Ply Thickness Calculator Converts prepreg fibre areal weight and resin content by weight into prepreg areal weight, resin areal weight, fibre and resin volume fractions, cured ply thickness and laminate density. Prepreg Areal Weight g/m²
- Parachute Canopy Permeability at Deployment Pressure Extrapolates canopy fabric permeability from the laboratory test differential to deployment pressure using a power law, giving the through-flow velocity, the multiplier over the certificate value and the total volumetric leakage across the canopy. Permeability at Deployment cfm/ft²
- Seatbelt Webbing Energy Dissipation & Elongation Modeler Balances occupant kinetic energy against webbing stretch: the restraint force the elongation implies, the deceleration in g, how much of the webbing break load it consumes and the elongation actually needed to stay inside that load. Average Restraint Force N
- Triaxial Woven Fabric Directional Strength Predictor Resolves the three yarn sets of a triaxial weave onto any test direction: strength along the axial direction, at the test angle and across it, the isotropy ratio the construction achieves, and the allowable load after a safety factor. Strength at Load Direction kN/m
- V50 Ballistic Limit from Fair-Fire Test Series Reduces a six-shot fair-fire series to a ballistic limit: V50 as the mean of the three highest partial and three lowest complete penetrations, the velocity spread against the acceptance limit, the zone of mixed results and the scatter of the series. Ballistic Limit V50 m/s
- VARTM Resin Infusion Flow & Fill Time Calculator Applies Darcy's law to vacuum infusion: fill time for a given flow length, the flow front velocity when it arrives, Darcy flux, and the longest flow path that will fill inside the resin's working life. Fill Time min
- Woven Roving Thickness & Laminate Stack Planner Converts fibreglass woven roving areal weight into cured ply thickness at a working fibre volume fraction, then plans the stack: plies for a target thickness, the laminate weight it builds and the resin it will draw. Cured Ply Thickness mm
Conservation, Forensics & Legal Textiles 5
- 45-Degree Flammability Burn Rate & Flame Spread Reconstructor Reconstructs flame spread from a 45-degree flammability test: burn rate in mm/s and m/min, margin against the Class 1 boundary, time to traverse a garment dimension, mass loss rate and an approximate heat release rate. Flame Spread Rate mm/s
- Capillary Wicking Distance & Time in Knit Structures Models directional capillary spread of a fluid through fabric: Washburn wicking distance along the wales after an elapsed time, the shorter across-course distance, the instantaneous advance rate, capillary driving pressure and the time to reach a measured stain dimension. Wicking Distance Along Wales mm
- Jacquard Pattern Repeat Matrix Match Validator Compares two woven or printed pattern repeats pixel by pixel: total repeat pixels, matched and mismatched counts, match percentage against a tolerance threshold, the match rate two unrelated designs would reach by chance, and the statistical significance of the excess. Match Percentage %
- Museum Textile Light Fading & Cumulative Lux-Hour Budget Calculates safe display exposure for historic textiles: annual lux-hour dose, the UV-weighted effective dose, the fading budget implied by a Blue Wool rating, years to a just-noticeable fade, the illuminance a target display life allows and the share of the annual budget being spent. Years to Just-Noticeable Fade years
- Radiocarbon Age Calculation for Cellulosic Textiles Converts a radiocarbon measurement on historic linen or cotton into a conventional age: activity fraction, mean life from the chosen half-life, isotopic fractionation correction, conventional radiocarbon age in years BP with its counting uncertainty, and the uncalibrated year. Conventional Radiocarbon Age years BP
Cordage, Ropes & Heavy Netting 5
- Climbing Rope Fall Factor & Impact Force Calculator Converts a fall into the force it delivers: fall factor from fall distance and rope paid out, peak impact force on a rigid anchor, the deceleration in g, rope stretch under that load and the energy the rope absorbs. Peak Impact Force kN
- Fishing Net Solidity & Towing Drag Calculator Calculates trawl net drag from mesh geometry and towing speed: solidity ratio, mesh opening, effective blocked area, total hydrodynamic drag force, drag per square metre and the towing power it demands. Net Drag Force kN
- Marine Hawser Minimum Breaking Load & Working Limit Calculator Sizes a mooring hawser: minimum breaking load from diameter and material factor, the spliced breaking load actually available, the working load limit after a design factor, and line weight and strength-to-weight for handling. Minimum Breaking Load kN
- Spliced Eye Termination Efficiency Calculator Compares rope terminations: strength retained by a splice against a knot, the advantage that represents, the additional bend loss over the eye at a given D/d ratio, and the working load the combination leaves. Spliced Strength kN
- Twisted Rope Lay Length & Strength Conversion Calculator Converts rope lay geometry into strength: helix angle from lay length and rope diameter, the cosine-squared twist efficiency it implies, total conversion efficiency after process losses, and the finished rope strength against the aggregate fibre strength. Finished Rope Strength kN
Geosynthetics & Civil Engineering 5
- Geogrid Pullout Resistance & Soil Friction Coefficient Calculates geogrid anchorage in a reinforced soil wall: pullout resistance from embedment length and overburden, the mobilised interface friction coefficient, factor of safety against the design tension and the embedment a target safety factor would need. Pullout Resistance kN/m
- Geomembrane Puncture Resistance under Hydrostatic Load Checks a geomembrane liner against subgrade protrusions: hydrostatic pressure at depth, the point force each stone collects, the cushion geotextile protection factor, factor of safety on puncture resistance and the cushion mass a target safety factor demands. Factor of Safety ×
- Geosynthetic Clay Liner Hydration Swell Index & Thickness Predicts GCL behaviour on hydration: free swell thickness from bentonite mass and swell index, the confinement factor under overburden, the thickness actually reached, restrained swell pressure and hydrated moisture content. Hydrated Thickness mm
- Turf Reinforcement Matrix Shear Stress & Channel Velocity Limits Checks a turf reinforcement mat against channel flow: applied boundary shear stress from depth and slope, Manning velocity, factor of safety on the permissible shear, the maximum flow depth the mat can hold and the discharge that goes with it. Applied Boundary Shear Pa
- Woven Geotextile Sieve Size vs Soil Particle Retention Derives the largest permissible geotextile opening size from a soil grading curve: uniformity and curvature coefficients, the gradation-dependent retention criterion, the maximum O95 allowed, and clogging and retention ratios for a candidate fabric. Maximum Permissible O95 mm
High-Performance Sports & Extreme Environments 7
- Built Into the Fibre or Applied to the Cloth: What Protection Costs Over a Life Premium Costs each route to a protective property - spun into the fibre, applied to the cloth, or applied and renewed - on the washes of protection it actually delivers rather than on the price of a garment. Reports the serviceable cloth retired with a failed finish and what it was worth, and whether the cheapest garment on the sheet is also the dearest protection on it. What Moving to the Cheapest Protection Saves cost/yr
- Multilayer Thermal & Vapour Stack Premium Adds a clothing system in series - every fabric layer and every trapped air gap between them - into total Rct, Ret, tog, clo and the Woodcock permeability index, then states it twice: as measured flat on a plate, and as worn once the gaps are compressed. Reports what share of the insulation is air rather than fabric, caps each gap at the thickness where convection begins, and reads the result against the insulation the stated conditions actually require. Insulation as Worn clo
- Cycling Aero-Suit Drag Area & Wattage Saving Predictor Estimates the aerodynamic benefit of a skinsuit: drag area after the fabric and seam contribution, baseline and reduced power at race speed, watts saved, the speed gain at constant power and time saved over a race distance. Power Saved W
- Fencing Plastron Puncture Resistance & Safety Margin Checks aramid fencing protection against broken blade puncture: resistance from areal density, layer count and blade tip sharpness, safety factor and margin against the required threshold, and the areal density or layer count the requirement demands. Puncture Resistance N
- High-Altitude Suit Hypobaric Moisture Transport Models sweat evaporation at extreme altitude: ambient pressure from the barometric profile, skin-to-air vapour pressure difference, evaporative resistance corrected for hypobaric diffusion, evaporative flux and capacity, and the sweat rate the metabolic load demands. Evaporative Capacity g/h
- Racing Suit Thermal Protective Performance & Escape Time Models flash fire protection in multi-layer aramid racewear: total TPP from base fabric, layer count and trapped air gap, incident heat flux, seconds to a second-degree burn, margin over the required escape time and the equivalent SFI rating. Time to Second-Degree Burn s
- Space Suit Multi-Layer Insulation Thermal Gradient Models EVA suit insulation between solar and deep-space extremes: effective emittance of the shield stack, radiative flux and total heat leak through the layers, equivalent conductance and thermal resistance, and the total load the cooling system must reject. Heat Leak Through Insulation W
Ropeway, Cable & Webbing Dynamics 5
- Aramid Hoist Belt Bending Fatigue Cycle Predictor Estimates the life of flat synthetic hoist belts over steel sheaves: bending strain from belt thickness and pulley diameter, cycles to retirement, bends accumulated per day, service life in days and years, and the sheave diameter a target life requires. Bending Cycle Life cycles
- Heavy-Lift Sling Working Load Limit by Hitch & Angle Works through webbing sling capacity for a lift: effective working load limit from hitch type, leg count and sling angle, actual tension per leg, utilisation against the rated capacity, horizontal crushing force and the shallowest angle the load permits. Effective Working Load Limit kN
- Paraglider Line Shrinkage & Aerodynamic Trim Distortion Models how ageing lines distort wing trim: absolute shortening of the front and rear cascades, the differential between them, the angle of attack change it produces, the resulting trim angle and the shift in trim speed. Angle of Attack Change °
- Slackline Webbing Tension, Sag & Anchor Force Modeler Calculates anchor loading on a tensioned line: tension from a walker at midspan and from the webbing self-weight separately, total line tension, sag angle, the multiple of body weight reaching the anchors and the minimum sag a tension limit requires. Line Tension kN
- Synthetic Winch Line Creep & Permanent Elongation Predicts viscoelastic creep in Dyneema and UHMWPE rope under sustained load: creep rate after load and temperature correction, accumulated permanent strain, elongation over the rope length and service hours to a retirement strain limit. Accumulated Creep Strain %
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Testing & Quality
Advanced ISO/ASTM Testing & Metrology · Product Engineering, Specifications & Feasibility · Testing, Standards & Metrology · Textile Testing & Quality Control
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Advanced ISO/ASTM Testing & Metrology 11
- Where to Set the Acceptance Limit When the Laboratory Is Not Certain Premium Separates the two things a release test gets wrong - good lots downgraded because the reading was low, and out-of-specification lots shipped because the reading was high - and finds the acceptance limit and the number of replicates that cost least across both. Then prices the three ways out against each other: a sharper laboratory, a steadier process, and a mean put back in the middle. What Setting the Limit Properly Is Worth cost/yr
- Ball Burst Strength & Deformation Modeler (ASTM D6797) Recovers multi-directional strain at failure from a ball burst test: the dome geometry the distension implies, arc length and strain at burst, equivalent pressure under the ball and burst force normalised to fabric weight and thickness. Strain at Burst %
- CMC(l:c) Tolerance Ellipsoid Boundary Calculator Builds the CMC acceptability ellipsoid around a colour standard: the SL, SC and SH weighting functions, the lightness, chroma and hue semi-axes at the working l:c ratio and commercial factor, and the volume of colour space they enclose. Lightness Semi-Axis ΔL*
- Elmendorf Pendulum Energy & Tear Force Calculator Derives Elmendorf tear force from pendulum physics: potential energy at the raised and returned positions, the energy the tear absorbed, and the force per ply that energy represents over the standard tear length. Tear Force per Ply N
- Four-Point System Fabric Defect Index Calculator Grades a fabric roll on the four-point system: total penalty points from defects in each length band, the roll area in hundred-square-yard units, points per 100 yd² against the acceptance limit and the penalty budget still available. Penalty Density points/100 yd²
- Grab vs Strip Tensile Conversion Calculator Converts a strip tensile result into the grab equivalent by modelling fabric assistance from the unclamped width, and reports how much of the grab reading that assistance is actually contributing. Predicted Grab Strength N
- ISO 139 Conditioning Time to Moisture Equilibrium Estimates how long a textile must sit in the standard atmosphere to reach moisture equilibrium: conditioning time to a stated tolerance, the half-time of the approach, regain still remaining after a day and the moisture the sample will take up. Conditioning Time h
- Peel Adhesion of Reinforcing Fabrics Calculator (ASTM D4393) Reduces a three-specimen peel adhesion series for fabric vulcanised to rubber: mean peel force, adhesion per unit width, the scatter across specimens and the margin against a specification minimum. Peel Adhesion N/mm
- Sewn Seam Failure Mode Predictor (ASTM D1683) Predicts whether a sewn seam will fail in the thread or in the fabric: thread-derived seam strength from stitch density, the governing seam strength and efficiency, and the stitches per centimetre needed to move failure into the fabric. Governing Seam Strength N/25mm
- Sweating Guarded Hotplate Ret, Rct & Permeability Index Reduces guarded hotplate measurements to the ISO 11092 outputs: thermal resistance Rct, evaporative resistance Ret, the moisture permeability index that relates them, and the tog and clo equivalents of the thermal figure. Evaporative Resistance Ret m²Pa/W
- Yarn Evenness CVm% to Thin & Thick Place Predictor Converts yarn mass irregularity into predicted imperfections: the z-score each sensitivity threshold represents, thin and thick places per kilometre from the normal tail, total imperfections and the equivalent U% figure. Thin Places per km
Product Engineering, Specifications & Feasibility 16
- Which Development Gates Earn Their Place Premium Prices the bench, the laboratory panel, the pilot yardage and the held first bulk lot against the problems each of them catches and the cost of catching those problems one stage later instead. Returns the order quantity above which each gate pays for itself, and applies it across a development book that is almost always over-tested at the bottom and under-tested at the top. What the Right Gates Are Worth cost/yr
- Design of Experiments Factor & Run Planner Plans an economical factorial experiment: runs in the fractional design, total runs including replication and centre points, design resolution, effects estimable, total cost and time, and the saving against a full factorial. Total Runs Required runs
- Fabric Hand & Performance Specification Matrix Maps subjective hand onto measurable properties: deviation from target for bending rigidity, compression, drape, stretch and friction, the weighted total deviation, a composite hand index and the single property furthest from target. Composite Hand Index index
- Finished-to-Greige Dimension & Weight Back-Calculation Works back from a finished fabric specification to greige settings: required greige width and GSM, greige length per hundred finished metres, the area ratio shrinkage imposes, finish add-on mass and the greige length an order requires. Required Greige Width cm
- Material Substitution Equivalence Comparator Compares a proposed fibre substitute against the original: equivalence ratio on tenacity, moisture regain, density and cost, a weighted equivalence score, the fabric weight change density implies and the cost saving offered. Weighted Equivalence Score %
- Measurement System Analysis (Gage R&R) Calculator Separates equipment repeatability from operator reproducibility, combines them into total gauge R&R, and reports the result against both acceptance criteria — percent of study variation and percent of tolerance — plus the number of distinct categories the gauge can resolve. Gauge R&R (% of Study Variation) %
- Measurement Uncertainty Budget Builder Combines instrument, sampling, conditioning, operator and method uncertainties in quadrature to a combined standard uncertainty, expands it by the coverage factor, and reports the reportable interval around the measured value plus the share of variance owned by the largest component. Expanded Uncertainty U %
- Pilot-to-Bulk Scale-Up Readiness Checker Scores six scale-up dimensions — recipe, machine, sample, capacity, risk and commercial approval — against their weights, compares the result with the release gate, and reports the shortfall, the weakest dimension, the score that dimension alone would need, and how many sit below the critical threshold. Weighted Readiness Score /10
- Product Risk & Critical-to-Quality FMEA Matrix Ranks failure modes for action: risk priority number, criticality from severity and occurrence, the RPN after planned actions, the reduction achieved, margin over the action threshold and what detection or occurrence improvement would each achieve alone. Risk Priority Number RPN
- Product Specification Limits & Process Capability Builder Converts customer tolerances into specification limits and tests them against the process: upper and lower limits, capability index for mass and strength, the weaker of the two, and the process standard deviation each property would need to reach a target capability. Limiting Capability Cp
- Response Surface Operating Window Optimizer Finds the process window satisfying two opposing responses: the bound each specification imposes, the feasible band between them, the midpoint setting, both responses at that setting and the tighter of the two margins. Operating Window Width units
- Specification Tolerance Cost-of-Quality Modeler Prices a tolerance change: converts current and proposed limits into sigma levels and reject rates in ppm, costs the additional rejects across annual volume, and compares that against the process improvement needed to hold the tighter limit at unchanged capability. Additional Annual Reject Cost currency
- Target GSM to Yarn Count & Construction Solver Solves the yarn counts a target fabric mass requires: warp and weft count in Ne and tex, the mass each direction contributes, the warp share of fabric weight and the resulting cover factor. Required Warp Count Ne
- Technical Data Sheet Completeness & Control Checker Audits a technical data sheet before it is issued: coverage of test methods, tolerances and units across the listed properties, a combined completeness score, approval sign-off status, and whether the document is past its controlled review interval. Overall Completeness %
- Tolerance Stack-Up Calculator for Textile Specifications Propagates yarn, construction, process and finishing tolerances into a product tolerance: root sum square and worst-case stack, margin against the specification, the share of variance owned by the largest contributor, the tolerance it would need for a tighter spec, and the sigma level achieved. Root Sum Square Tolerance ± %
- Woven Construction Feasibility Checker Tests whether a target construction can be produced: reed dents per centimetre required, Peirce cover factor, total ends, and the margin available against reed density, cover factor and loom pick rate limits. Feasibility Margin ×
Testing, Standards & Metrology 8
- Blended Yarn Commercial & Invoice Weight Calculator Converts an as-received blended consignment to its commercial invoice weight using the mass-weighted official regain of the two fibres, showing oven-dry weight, the water actually present and how far the billing weight differs from the shipped weight. Commercial Invoice Weight kg
- Crocking (Rubbing) Colourfastness Assessment Averages dry and wet crocking grades across three specimens, compares each against its own buyer specification, and reports the dry-to-wet gap that distinguishes unfixed surface dye from genuine poor fastness. Binding Margin grades
- Elmendorf Tear Strength & Energy Calculator (ASTM D1424) Converts an Elmendorf pendulum scale reading into tear force per ply in gram-force and newtons, the tear index normalised to fabric weight, the work absorbed over the standard tear length and the margin inside the valid scale window. Tear Force per Ply gf
- Fabric UPF (Ultraviolet Protection Factor) Predictor Models fabric ultraviolet protection from cover factor, fibre transmittance and dye absorbance: UV transmission, the UPF it implies, the labelled UPF after standard rounding, and the ceiling that open area alone imposes. Predicted UPF
- Grab Tensile Strength Statistics Calculator (ASTM D5034) Reduces five grab tensile specimens to reportable statistics: mean breaking force, sample standard deviation, coefficient of variation, range, the 95% lower confidence limit and the margin over a specified minimum. Mean Breaking Force N
- Martindale Abrasion Weight Loss Extrapolator Extrapolates Martindale abrasion mass loss from a measured interval: loss rate per thousand cycles, projected loss at a target cycle count, and the cycles the specimen will take to reach a defined failure threshold. Cycles to Failure Threshold no.
- MVTR & Evaporative Resistance (Ret) Calculator Converts a cup-test mass loss into moisture vapour transmission rate per day and per hour, the evaporative heat flux it represents, and the evaporative resistance Ret that breathability specifications are written against. MVTR g/m²/24h
- Wind-Degraded Thermal Resistance (Tog & Clo) Matrix Degrades a still-air tog rating for wind speed and fabric air permeability, returning effective tog, clo and Rct in wind, the percentage of insulation lost and the wind penetration factor for extreme weather layering. Effective Thermal Resistance tog
Textile Testing & Quality Control 22
- Buyer Test Plan & Laboratory Budget Premium Prices a buyer test protocol on what each test is actually run on rather than per style, which is where the budget is lost: a test sensitive to the material runs once per material, one sensitive to the dyeing runs once per colourway, and one sensitive to both runs on every combination. Counts the retests a first-pass rate implies, names the single line carrying most of the bill, and reports the longest turnaround as the date it puts into the calendar. Laboratory Cost for the Range cost
- What a Defect Costs, Decided by Where It Was Found Premium Costs every defect against the value the material had reached by the stage it was caught, rather than against a single average, and reports the defect rate beside the money it actually cost - two figures that move independently. Then prices the counterfactual that matters: what the same faults, in the same quantity, would have cost had they been found one stage upstream. Saved by Finding the Same Faults One Stage Earlier cost/yr
- What a Performance Guarantee Costs, and How Long It Should Run Premium Reserves against a performance guarantee from the failure distribution rather than from experience of claims that have not arrived yet. Prices every candidate term against the premium the market pays for it, finds the term that actually pays, reports how much dearer doubling the term is, and inverts the question - what the failure shape and the characteristic life would have to be for the guarantee on offer to break even. What the Guarantee You Offer Costs a Year cost/yr
- Which Tests Your Own Laboratory May Run, and Which It May Not Premium Routes a buyer's test programme through the standards crosswalk this site maintains, asking of every specified method whether your laboratory's accreditation actually reaches it. Identical means the result transfers and the test stays in house; modified means the method differs in a stated way and the result is challengeable; not equivalent means the sample goes out. A standard the crosswalk has not yet checked is reported as unverified rather than guessed at in either direction. Prices the routing against the two usual policies — send everything out, or run everything in. What Routing Costs cost/yr
- Yarn Count Deviation: Length Delivered Against Length Contracted Premium Turns a delivery of tested yarn lots into the length actually received against the length the nominal counts promised, values the gap twice - as a credit note at yarn price and as lost production at contribution - and separates the lots that are short from the ones whose surplus is quietly paying for them. Net Length Not Delivered km
- Air Permeability & Fabric Porosity Calculator Converts an air permeability reading between metric and imperial units and calculates volumetric porosity from fabric weight, thickness and fibre density, for activewear, filtration and technical textiles. Air Permeability CFM
- AQL Sampling Plan Generator (ISO 2859-1) Generates the ISO 2859-1 single sampling plan for a garment or fabric lot at General Inspection Level II, returning sample size, acceptance and rejection numbers, and whether the defects found pass the inspection. Sample Size pcs
- Blue Wool Lightfastness Rating from Exposure Places measured exposure hours on the logarithmic blue wool scale, returning the achieved rating and the standard it rounds to, the hours a target grade demands, the margin either way and the equivalent AATCC fading units. Achieved Rating BW
- Colour Difference Delta E & CMC Acceptability Calculator Computes CIE Delta E*ab and the CMC(l:c) colour difference between a standard and a batch from spectrophotometer L*a*b* readings, and judges the result against the commercial tolerance. Delta E CMC dE
- Fabric Drape Coefficient & Bending Rigidity Calculator Calculates drape coefficient from a drapemeter shadow area and bending rigidity from a Shirley cantilever overhang, the two objective measures behind fabric handle and garment fall. Drape Coefficient %
- Fibre Content Label: Declared Blend, Test Result & Tolerance Compares a declared fibre composition against a test result fibre by fibre, applies the tolerance as percentage points of total fibre weight rather than as a percentage of the declared figure, shows the band each declaration allows, and removes the tolerance where the label claims a single fibre. Margin Against Tolerance pp
- Grey Scale Staining Rating Interpreter Converts a measured colour difference on the multifibre adjacent fabric into an ISO 105-A03 grey scale staining grade, and reports the margin against the minimum grade a buyer requires. Grey Scale Grade grade
- Knitted Fabric Bursting Strength Modeler Predicts diaphragm bursting pressure for a knitted fabric from its wale and course tensile strengths using a thin-walled sphere model, and reports the result in kPa, kgf/cm2 and psi. Predicted Bursting Strength kPa
- Overall Moisture Management Capability from MMT Indices Normalises the three moisture management tester outputs onto their index scales, blends them into the OMMC with the standard weighting, returns the grade, and identifies which index is limiting and what perfecting it alone would be worth. Overall Moisture Management Capability index
- Pilling Propensity Index Calculator Converts Martindale pilling test counts into pill density and a cycle-normalised propensity index, so fabrics assessed over different cycle counts can be compared against a rating specification. Pilling Index pills/1000 cycles
- Replicate Statistics for a Lab Result Turns the readings from a set of test specimens into the mean, sample standard deviation, CV% and a confidence interval built on the correct t value for the specimen count - the summary every textile test report has to carry, whatever property was measured. Coefficient of Variation %
- Restricted Substance Limit: Result, Uncertainty & the Next Limit Places a laboratory result against a restricted substance limit with its expanded uncertainty, applies a guard band to give an acceptance limit, converts the result between mg/kg, ppb and percent, and reports the margin against a later limit that a stepped-down threshold will bring. Headroom to Acceptance Limit mg/kg
- Seam Slippage against Cloth Cover Factor Computes warp, weft and Peirce cloth cover factors from sett and count, takes the worse of the two measured slippage forces against specification, and solves the cover factor and pick density a target resistance would actually require. Governing Slippage Force N
- Seam Strength & Efficiency Calculator Calculates seam efficiency from seam and fabric breaking strength, the absolute strength lost at the seam, and the seam strength a target efficiency specification would demand. Seam Efficiency %
- Tear to Tensile Strength Ratio Calculator Compares tear strength against tensile strength to expose fabrics that test strong in tension but tear easily, and normalises both by fabric weight so different constructions can be judged fairly. Tear to Tensile Ratio %
- Textile Unit Converter: Fabric Weight, Tenacity & Yarn Length Converts fabric weight between GSM, ounces per square yard, grams per linear metre and ounces per linear yard; yarn tenacity between centinewtons per tex, grams per denier, breaking length and true stress in megapascals; and yarn length between metres per kilogram and yards per pound. Fabric Weight oz/yd2
- Thermal Resistance TOG & Clo Value Predictor Converts fabric or wadding thickness and thermal conductivity into thermal resistance, then into TOG, clo and imperial R-value, the insulation scales used to specify winterwear and bedding. Thermal Resistance TOG
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Weaving & Fabric Formation
Industrial Weaving & Tire Cord Engineering · Narrow Fabrics, Tapes & 3D Weaving · Warping, Sizing, Weaving & Fabric Formation Control · Weaving & Fabric Construction
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Industrial Weaving & Tire Cord Engineering 7
- Airbag Fabric Porosity & Calendering Pressure Modeler Fits an exponential permeability decay to a calendering trial and extrapolates it: permeability achieved at a working line load, the load a target permeability demands, and the total nip force that represents across the fabric width. Line Load for Target N/mm
- Heavy Canvas Beat-Up Force & Sley Capacity Calculator Checks whether a loom can beat heavy duck: peak sley acceleration and inertial force at the running speed, the total beat-up load per metre of reed width including fabric resistance, and how much of the machine rating that consumes. Total Beat-Up Load N/m
- Projectile Loom Torsion Bar Twist & Firing Energy Calculator Converts torsion bar geometry and twist angle into picking torque, stored elastic energy, the projectile velocity it produces after transfer losses, and the peak shear stress the bar carries on every pick. Projectile Velocity m/s
- Rapier Tape Stroke Acceleration Profiler Profiles a rapier insertion stroke: available insertion time, peak tape speed, the acceleration the head reaches on a trapezoidal profile, the g-force it represents and the inertial tension spike it puts into the weft. Peak Head Acceleration m/s²
- Sailcloth Bias Stretch & Modulus Calculator Calculates the 45-degree bias modulus of a woven sailcloth from its warp, fill and shear properties, the diagonal strain and elongation under load, and how much of the bias compliance the shear modulus is responsible for. Bias Modulus at 45° MPa
- Tire Cord Dipped vs Greige Contraction Calculator Tracks tire cord fabric through the RFL dipping unit: length and width contraction, the area shrinkage they combine to, the ends per inch the dipped fabric ends up at, and the finished areal weight after resin pick-up. Length Contraction %
- Water-Jet Loom Pump Pressure & Weft Insertion Calculator Converts water-jet pump pressure into jet velocity, the weft speed it drags across the shed, insertion time against the reed width, water consumed per pick and per hour, and the loom speed the insertion time will support. Jet Velocity m/s
Narrow Fabrics, Tapes & 3D Weaving 11
- What a Machine That Can Do Two Things Is Worth Premium Turns "it gives us options" into a figure. Prices the difference between choosing an article after the market has shown itself and committing to one before, charges the switching it implies and the capital it costs, and reports which of the articles a flexible machine is sold on actually contribute to the case and which never win in any market the plant expects. What Flexibility Is Worth cost/yr
- 3D Woven Preform Fibre Volume Fraction Estimator Calculates the fibre volume fraction of a 3D woven preform from areal weight, thickness and fibre density, splits the areal weight into Z-axis and in-plane reinforcement, and returns the resin volume fraction and cured composite density. Fibre Volume Fraction %
- Braid Extension, Diameter Change & the Neutral Angle Treats a braid as the mechanism it is: from a starting and finishing braid angle it returns the extension, the diameter it necks down to, the change in enclosed volume, the geometric limit of extension available, and how far the construction sits from the 54.74 degree angle at which a braided tube is neutral under internal pressure. Extension %
- Braider Bobbin Depletion, Doff Interval & Effective Output Turns a published bobbin volume into the run a braider actually gets: yarn mass and length per bobbin, how fast each carrier draws it at the braid angle, the minutes and metres before the creel is empty, and the effective output once the change time is charged against every cycle. Run Before the Creel Is Empty min
- Braiding Carrier Speed & Braid Angle Calculator Calculates braid angle from mandrel diameter, carrier rotation speed and take-up speed, and returns the braid pitch, the yarn feed rate each carrier must sustain and total yarn consumption for the braided length. Braid Angle °
- Elastic Stretch, Recovery & Modulus Calculator Turns a three-length stretch test on elastic tape into elongation, permanent set and elastic recovery, and converts the load at extension into engineering modulus and force per centimetre of width for waistband and bandage specifications. Elastic Recovery %
- Jacquard Hook Capacity & Pattern Repeat Limit Tool Works out how large a jacquard design repeat can be on a given machine: total ends in the cloth, ends and width per repeat, hook utilisation and spare hooks, plus the maximum repeat height allowed by pattern memory at the working pick density. Design Repeat Width cm
- Leno Weave Crossing End Tension Calculator Calculates the extra path length a leno crossing end travels from crossing amplitude and pick spacing, converts any shortfall in let-off compensation into strain, and reports the resulting crossing end tension against the yarn breaking load. Crossing End Tension cN
- Needle Loom Production Calculator (Tapes & Webbing) Converts needle loom pick rate and pick density into tape speed, metres per tape and total loom output per shift, with woven mass and total picks inserted, for high-speed narrow fabric weaving. Loom Output m/shift
- Terry Towel Pile-to-Ground Ratio & GSM Calculator Builds terry towel areal weight from its three yarn streams — pile warp at the working pile ratio, ground warp and weft, each with its own crimp — and reports how much of the finished GSM the pile is actually paying for. Towel Areal Weight g/m²
- Woven Label Pick Density & Defect Rate Predictor Converts label loom speed and ultra-high pick density into cloth speed, labels per hour and picks per label, then projects defective labels and defect rate from a per-million-picks insertion defect rate. Label Output labels/h
Warping, Sizing, Weaving & Fabric Formation Control 11
- Fabric Roll Diameter, Mass & Handling Limit Calculator Converts wound fabric length into roll diameter through the Archimedean spiral, reports roll mass, build thickness, wrap count and roll density, and gives the length that reaches a stated diameter or mass handling limit. Roll Diameter mm
- Failed Fabric Roll Disposition Cost: Downgrade, Rework, Cut Around or Return Costs the four ways a rejected fabric roll can be disposed of - sold as seconds, mended and sold at full price, cut around the faults, or returned - and reports which is cheapest and what it costs as a share of the roll value. Cheapest Disposition
- Let-Off Torque, Warp Tension Swing & Take-Up Load Converts warp tension per end into total sheet tension, beam torque at full and empty diameter, and the tension swing a constant-torque let-off produces across one beam - with the specific tension and the fraction of yarn breaking load the setting is using. Total Warp Sheet Tension N
- Loom Changeover Load & the Gain from Sequencing Similar Styles Prices the changeover as a fraction of the batch cycle, compares a random style order against one that groups similar warps into tie-ins, and converts the availability difference into metres and contribution across the shed. Availability Recovered by Sequencing %
- Loom Stop Cause Pareto, Lost Metres & Annual Cost Converts warp, weft and mechanical stop rates per 100,000 picks into stops per hour, weights each by its own mean repair time to build the true downtime Pareto, and prices the result as lost metres and lost margin across the shed. Loom Efficiency from Stops Alone %
- Sectional Warping Sections, Beam Capacity & Maximum Warp Length Divides a warp into sections against the creel capacity, computes section width and ends per centimetre, and sizes the beam: capacity from flange and barrel geometry, the maximum warp length that fits, and how many beams the planned warp actually needs. Sections Required
- Shed Geometry, Warp Strain & Abrasion Exposure Computes the extra path length a warp end travels when the shed opens, as strain at the top and bottom shed lines, checks it against the yarn's breaking extension, and multiplies it by the shed cycles per metre to give the abrasion exposure a construction imposes. Mean Warp Strain at Full Shed %
- Size Box Concentration & Stock Make-Up Works out warp throughput from count, ends and speed, derives the size box concentration that an add-on and wet pick-up together demand, and returns the cooked stock and dilution water the box consumes per hour along with its turnover time. Required Box Concentration %
- Sized Yarn Abrasion Resistance, Hairiness Gain & Add-On Adequacy Turns a pair of abrasion cycle counts into the cycles gained per point of size add-on, checks the sized yarn against the abrasion the loom actually demands, and back-calculates the add-on that would just meet it - with the size paste and money that over-sizing costs. Add-On Above What the Loom Needs %
- Sizing Add-On, Water Evaporated & Cylinder Drying Load Derives size add-on from wet pickup and size solids, then closes the drying balance: water carried into the cylinders, water left at the target moisture, evaporation rate, steam demand and the drying heat duty behind them. Size Add-On %
- Weft Bow & Skew Against Limits, Straightener Range and Cutting Loss Converts measured bow depth and skew offset into the percentages the standards use, checks them against contract limits and the range a weft straightener can actually pull out, and prices the residue as panel twist and squaring trim down the roll. Bow %
Weaving & Fabric Construction 13
- How Many Warp Specifications a Weaving Shed Can Afford Premium Tests every warp specification in a range against the changeovers it forces, because a specification nobody else shares has to be drawn in fresh every time rather than tied in. Reports which of them carry too few metres per set-up to justify their own warp, what merging them into a neighbouring sett would save, and the loom hours it would return. What Merging the Tail Away Saves cost/yr
- Air-Jet Loom Air Consumption Calculator Estimates compressed air demand for an air-jet loom from main and relay nozzle consumption per pick and insertion rate, converting it into cubic metres per hour, CFM, compressor energy and running cost. Air Consumption m3/h
- Dobby & Jacquard Harness Load Calculator Calculates the lifting load on a dobby shaft or jacquard harness from ends per shaft, warp tension, shed angle and heald frame mass, and compares it against the rated shaft capacity to prevent machine overload. Load per Shaft N
- Fabric Contraction & Loom-state Shrinkage Tool Separates the width lost between the reed and the loom-state cloth from the width lost in wet processing, so a finished width target can be traced back to the correct reed width. Total Width Contraction %
- Fabric GSM & Yarn Consumption Calculator Calculates the grams per square metre of a woven fabric and the warp and weft yarn required per 100 metres, from ends per inch, picks per inch, yarn counts, crimp and process wastage. Estimated Fabric GSM g/m²
- Loom Production & Efficiency Calculator Converts loom speed, picks per inch and efficiency into woven fabric output in metres and square metres per hour and per shift, and reports the effective pick insertion rate a loom actually achieves. Fabric per Shift m
- Maximum Sett Predictor (Ashenhurst's Rule) Applies Ashenhurst's rule to predict the theoretical maximum ends or picks per inch a weave can carry at a given yarn count, and shows how much of that jammed limit an actual sett is using. Maximum Sett /inch
- Pick Spacing & Beat-up Force Estimator Estimates the reed force needed to beat a pick into the cloth fell, from pick spacing, weft yarn diameter and total warp tension, and reports how close the construction runs to weft jamming. Estimated Beat-up Force N
- Reed Count & Reed Width Calculator Converts a target cloth width, end count and weft crimp into the reed width and reed count required in the loom, along with total dents and the ends per inch in reed against the finished cloth. Reed Count dents/inch
- Shirley Fabric Cover Factor Calculator Applies Peirce's cover factor equations to give warp, weft and total cover for a woven construction, plus the percentage of the fabric plane covered by yarn and the open area left for air and light. Total Cover Factor K
- Warp & Weft Crimp Percentage Calculator Calculates warp and weft crimp and take-up percentages from straightened yarn lengths measured against the fabric sample, the figures that drive yarn consumption, fabric weight and loom take-up settings. Warp Crimp %
- Weave Repeat, Shafts & Ashenhurst Maximum Sett Derives repeat size, shafts for a straight draft, float lengths and intersections from a weave notation, then applies the Ashenhurst rule to give the yarn diameter, the maximum sett the structure supports and how much of it the actual sett uses. Maximum Sett epi
- Woven Fabric Reverse Engineering from GSM and Sett Solves the areal weight mass balance for the warp and weft counts implied by a measured GSM, sett and crimp, then reports the weight each direction contributes, the tex equivalents and the resulting cover factors. Derived Warp Count Ne
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tools
Weaving Preparation
Advanced Sizing, Slashing & Preparation · Warping & Sizing
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Advanced Sizing, Slashing & Preparation 5
- Creel Tension Build-Up & Front-to-Back Spread Modeler Models how warping creel tension builds from package to beam: capstan friction through the guides, drag along the creel length, the tension the furthest end arrives at and the spread against the nearest position. Tension from the Furthest Package cN
- Size Liquor Viscosity & Yarn Penetration Depth Predictor Applies the Washburn capillary relation to warp sizing: how far size penetrates a yarn in the immersion time available, the share of the yarn radius reached, and the maximum liquor viscosity that will still reach the core. Penetration Depth µm
- Sizing Brix to Solid Content Converter Converts a shop-floor refractometer reading into size liquor solids: temperature-corrected Brix, solids percentage through a size-specific conversion factor, grams of solids per litre, and the error an uncorrected reading would carry. Size Liquor Solids %
- Slasher Indigo Dyeing Oxidation Distance Calculator Solves the skying geometry of a sheet indigo dyeing range: the roller distance needed to fully oxidise leuco indigo at the working speed, immersion time per box, the adequacy of the distance available and the speed limit it imposes. Skying Distance Required m
- Sow Box Squeeze Roll Nip Pressure to Wet Pick-Up Calculator Works forward from the squeeze roll pneumatic setting: cylinder force, nip line load across the warp width, the wet pick-up that load produces on a calibrated power law, and the size add-on it delivers. Wet Pick-Up %
Warping & Sizing 11
- How Much Size to Put on a Warp Premium Sets the size add-on for every warp quality by fitting the three levels a mill has actually run and balancing what a point of size costs to buy and to wash off against the warp breaks it removes. Splits the answer across the three departments that meet on this number - sizing, weaving and the effluent plant - and reports the breaks a point of add-on has to remove before it pays for itself. What Setting the Add-On Properly Is Worth cost/yr
- Sectional Warping Band Width Calculator Works out how many sections a sectional or pattern warp needs, the ends carried by each band, the exact band width on the drum and the resulting ends per centimetre, so striped and yarn-dyed patterns repeat cleanly. Band Width per Section cm
- Size Pick-up Percentage Calculator Determines the dry size add-on carried by a sized warp from before and after oven-dry weights, compares it against the target pick-up, and scales the result into kilograms of size solids for the full warp. Size Pick-up %
- Sizing Cylinder Steam Consumption Estimator Converts the moisture load on a sizing machine into an hourly steam demand and running cost, using the latent heat of vaporisation, the usable enthalpy of the supply steam and the thermal efficiency of the cylinder train. Steam Demand kg/h
- Sizing Machine Evaporation Capacity Calculator Checks whether the drying cylinders on a sizing machine can carry the moisture load, by converting ends, speed and yarn count into dry warp throughput and the kilograms of water that must be evaporated each hour. Water to Evaporate kg/h
- Sizing Recipe Cost Estimator Prices a size box recipe by converting starch, PVA and lubricant concentrations into kilograms per batch, then reporting total batch cost, cost per litre of liquor and cost per kilogram of size solids. Batch Cost
- Stretch Percentage in Sizing Calculator Measures warp elongation through a sizing machine zone by zone from roller surface speeds, giving creel-to-beam total stretch and the breaking elongation left in the yarn when it reaches the loom. Total Stretch %
- Total Ends & Creel Capacity Optimizer Splits a total warp end count across the available creel pegs, returning the number of warper beams required, an even ends-per-beam distribution, creel utilisation and the spare pegs left over. Warper Beams Required no.
- Warp Beam Flange Diameter to Length Capacity Tool Calculates how many metres of warp a beam will hold from its flange diameter, barrel diameter, width and yarn packing density, and reports the yarn mass and winding height that result. Warp Length Capacity m
- Warp Yarn Requirement Tool with Waste Factor Calculates the exact kilograms of warp yarn to indent for a given set, from ends, warp length and yarn count, with separate allowances for weaving crimp and preparation waste so the order covers loom-state reality. Warp Yarn to Indent kg
- Warping Machine Production & Beam Capacity Calculator Estimates direct warping output in metres per hour, the run time to fill a beam of a given length, the yarn weight that beam will carry and the number of beams a shift can deliver. Effective Production m/h
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tools
Wet Processing
Advanced Colour Physics & Wet Processing · Denim Manufacturing & Specialized Wet Processing · Dyeing, Printing, Color Management & Chemical Control · Specialized Chemistry & Advanced Dye Physics · +1 more
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Advanced Colour Physics & Wet Processing 7
- Dye Compatibility, Strike Rate & Half-Dyeing Time Tool Compares two dyes in one bath using first-order exhaustion kinetics: exhaustion reached by each at the dyeing time, the gap between them that drives unlevelness, a compatibility index from their half-dyeing times, and the time the slower dye needs. Exhaustion Gap at Cut-off pp
- Garment Wash Liquor Ratio & Enzyme Dosing Calculator Scales a lab garment-wash recipe to a production machine by holding dose on weight of goods constant: batch weight, bath volume, the production dose in grams per litre, total enzyme per load and water per garment. Production Enzyme Dose g/L
- Indigo Rope Dyeing Oxidation & Immersion Calculator Sets the dip and sky sequence on an indigo rope range: immersion time per trough, skying time available between dips, whether that meets the oxidation the dye needs, and the total time the rope spends in the range. Oxidation Adequacy %
- Kubelka-Munk K/S Colour Formulation Predictor Converts spectrophotometer reflectance into Kubelka-Munk K/S, separates the substrate contribution, derives the unit K/S per percent of dye and solves the concentration needed to reach a target reflectance. Sample K/S
- Ozone Bleaching Dose & Exposure Time Calculator Sizes an ozone denim bleaching cycle: ozone supplied over the exposure, the fraction consumed at the working utilisation, dose per kilogram of garments, generator energy and the off-gas load the destruct unit has to handle. Ozone Dose g/kg
- Pad-Thermosol Sublimation Loss Calculator Estimates disperse dye lost to sublimation during pad-thermosol curing of polyester: the temperature-corrected loss rate, the share of dye sublimed away over the dwell, and the dye actually retained on the cloth. Sublimation Loss %
- Supercritical CO₂ Dyeing Pressure & Solubility Modeler Models a supercritical CO₂ dyeing vessel: disperse dye solubility by the Chrastil density correlation, dye dissolved per pass, passes needed for the recipe, CO₂ charge mass, the equivalent liquor ratio and the reduced pressure and temperature. Dye Solubility in CO₂ g/L
Denim Manufacturing & Specialized Wet Processing 8
- The Cheapest Route to a Denim Wash Premium Takes the wash-down a recipe actually reaches and finds the cheapest combination of processes that reaches the same one, inside the tensile loss the fabric will take and the water the plant is allowed. Prices what an inherited recipe is costing, what the brand's restricted-substance list is costing, and what one more point of fabric strength would be worth to the laundry. What the Recipe on the Card Is Costing cost/yr
- Denim Skewness & Leg Twist Correction Calculator Converts a measured weft offset into skew percentage and angle, then solves the additional skew needed to cancel the residual leg twist a wash produces, with the weft offset the finishing range must set. Required Skew Angle °
- Indigo Build-Up Across a Dip-Nip Sequence Turns bath concentration, wet pick-up and per-dip fixation into the indigo each box deposits, accumulates it across the sequence, and reports the dips or the concentration a target depth needs along with indigo consumption per tonne of warp. Indigo on Yarn % owf
- Indigo Vat Redox & Hydrosulfite Dosing Calculator Converts measured redox potential and pH deficits in an indigo vat into hydrosulfite and caustic top-up doses, in both concentration and total mass, with the hydrosulfite to indigo ratio the vat is holding. Hydrosulfite to Add kg
- Laser Denim Fading Energy & Tensile Loss Predictor Converts laser power, scan speed and line spacing into surface energy density, predicts the tensile loss it causes, and reports the energy budget and pass count still available before the fabric falls below its minimum strength. Surface Energy Density J/cm²
- Mercerisation Caustic Baumé & Dwell Time Calculator Converts a Baumé hydrometer reading into caustic specific gravity, percentage and grams per litre, then checks the dwell time the range actually delivers at the running speed against what the swelling reaction needs. Caustic Concentration g/L
- PP Spray Neutralisation Bisulfite Dosing Calculator Sizes the sodium bisulfite dose that stops a potassium permanganate spray: stoichiometric requirement from the redox mass ratio, working dose after safety excess and product purity, bath concentration and consumption per garment. Bisulfite to Charge g
- Stone Wash Pumice Load & Attrition Cost Calculator Sizes a stone wash load: fabric weight, pumice weight at the working ratio, the combined load against machine capacity, and the stone lost to attrition each cycle with its cost per garment. Pumice Load kg
Dyeing, Printing, Color Management & Chemical Control 18
- Dyeing Route Economics: Which Machine for This Lot Premium Costs the same lot down every dyeing route the house owns, separating what each route costs to start from what it costs to run. Reports the lot size band over which each route is the cheapest, so the answer becomes a routing rule rather than a single verdict, and prices what running the lot on the fastest machine costs when that is not the cheapest one. Cost of Routing This Lot to the Fastest Machine cost
- Rotary or Digital: Where the Two Cost Lines Actually Cross Premium Routes a print book design by design instead of by a rule of thumb. Rotary is almost all fixed cost — a screen per colour per colourway, strike-offs, setup and washdown — so its cost per metre falls with length and never stops. Digital is almost all variable, and its ink scales with coverage rather than with run length. The two lines cross, and where they cross moves with the colour count, the number of colourways and the coverage, so a house carrying one crossover figure is right about the design it came from and wrong about the rest of the book. Saving From Routing Each Design cost
- The Express Lane: How Much Can Be Sold Before It Stops Being Express Premium Works out how much of a plant can be sold as priority work before the priority stops meaning anything, using the waiting times of a two-class queue rather than a scheduling rule of thumb. Reports the largest express share that keeps the promised lead time, what the standard book pays for it, the premium being charged today for a service that is not being delivered, and the lead time that could honestly be promised instead. Premium Charged a Year for a Promise Not Kept cost/yr
- What a Colour Costs Before Any Cloth Is Dyed, and the Lot That Absorbs It Premium Costs a colour card colour by colour, separating the recipe cost that scales with the cloth from the lab dips, approvals and changeover that do not, and reports the absorbed cost per kilogram, the margin each colour actually earns, and the lot size at which a losing colour breaks even. Blended Margin on the Range %
- Colour Measurement Uncertainty & Tolerance Guard Band Combines spectrophotometer drift, repeatability and inter-instrument agreement in quadrature into an expanded uncertainty, subtracts it from the shade tolerance as a guard band, and reports which of the three terms is actually consuming the tolerance. Usable Shade Latitude dE
- Counter-Current Washing Range: Stages, Wash Ratio & Water Evaluates a continuous washing range as the counter-current cascade it is: computes the wash ratio, the impurity left on the cloth after a given number of boxes at a stated stage efficiency, the same water spent as independent baths for comparison, the boxes a target actually needs and the least water the boxes already built could run on. Impurity Left on Cloth %
- Digital Textile Printing Ink Consumption, Purge Waste & Cost Builds ink consumption from drop physics - resolution, pass count, coverage and drop volume - into millilitres and grams per square metre, then adds the purge and maintenance ink that never reaches the fabric and costs it per square metre. Ink on the Fabric mL/m2
- Dye Bath Dosing Pump Profile & Addition Schedule Converts a linear or progressive dosing profile into the stock volume, the average and peak metering rates, the per-step addition schedule and the shortest dosing time the installed pump can actually hold, so the profile that is programmed is the profile that runs. Peak Dosing Rate L/min
- Dye Strength Assay, Dosing Correction & Stock Yield Corrects a recipe dose for the assayed strength of the lot actually in the store, and reports the depth shortfall an uncorrected recipe carries, the extra dye each batch consumes, the batches the stock will really make and the value of the strength deficit. Corrected Dose % owf
- Dyebath Exhaustion Kinetics & Cycle Time Fit Fits the Cegarra-Puente rate constant from a single measured exhaustion point, then returns half-dyeing time, the times to reach 95 and 99 percent of equilibrium, the exhaustion the programmed cycle will actually reach and the dye left in the bath when it stops. Exhaustion at End of Cycle %
- Dyeing Machine Fill Ratio & Part-Load Penalty Compares a batch against the vessel it is loaded into, holding the machine to its minimum circulating volume, and returns the effective liquor ratio, the chemical overdose that part-loading forces, the salt wasted per batch and the smallest batch that still runs at the design ratio. Effective Liquor Ratio :1
- Polyester Oligomer Deposition Risk & Safe Drop Temperature Models cyclic trimer released from polyester during high-temperature dyeing against what the cooling bath can still dissolve, returning the mass at risk of depositing on fabric and machine and the drop temperature above which nothing crystallises out. Safe Drop Temperature degC
- Reactive Dyeing Salt, Alkali & Carbonate Buffer Capacity Applies Henderson-Hasselbalch to the bicarbonate-carbonate step to give the carbonate fraction at a target pH, computes the Van Slyke buffer capacity the soda ash dose provides, and compares it against the acid released by dye hydrolysis and by the substrate. Soda Ash to Charge kg
- Reactive Wash-Off Dilution Series & Water Demand Treats reactive wash-off as the geometric dilution series it is: computes the unfixed dye left after dyeing, the fixed fraction each rinse removes, the residual after a given number of baths, the baths actually needed to reach a target and the absurd single-bath liquor ratio that would match them. Residual Unfixed Dye ppm
- Screen Volume, Paste Deposit & Squeegee-Shear Viscosity Derives screen open area and theoretical paste volume from mesh count and thread diameter, converts it into wet pick-up, dry deposit and dye applied per square metre, and gives the apparent viscosity a power-law paste has at squeegee shear rather than at rest. Wet Paste Pick-Up g/m2
- Special Index of Metamerism Across Illuminants Separates metamerism from a plain shade mismatch by taking the colour difference under incandescent and fluorescent illuminants net of the residual difference under the reference, and reports the index, the margin against a limit and how many illuminants fail. Worst Metamerism Index dE
- Sublimation Transfer Yield & Ink Waste Models sublimation transfer as a saturating time-temperature dose, returning the efficiency a given press cycle achieves against the ceiling, the ink transferred and left on the paper, and what the residue costs per square metre. Transfer Efficiency %
- Thermosol Fixation Dose & Line Speed Limit Converts oven length, line speed and curing temperature into the fixation dose actually delivered against a reference time-temperature point, separates the heat-up seconds that fix nothing, and returns the maximum line speed that still completes fixation. Fixation Dose Delivered %
Specialized Chemistry & Advanced Dye Physics 5
- Cationic Cotton Reagent Dosing & Zeta Potential Calculates the chemistry for salt-free reactive dyeing of cotton: CHPTAC reagent and caustic charges for a batch, reagent actually fixed on the fibre, resulting zeta potential and degree of substitution, and the salt the route avoids. Treated Zeta Potential mV
- Fluorescent Brightener Whiteness Index Saturation Limit Prevents optical brightener overdosing: CIE whiteness index at the current dose, the dose that maximises whiteness, the peak whiteness available, points of whiteness given away by overdosing, dose excess and reagent wasted per batch. CIE Whiteness Index W
- Microcapsule Rupture Force & Payload Release Calculator Calculates the mechanics of fragrance and phase-change microcapsules in fabric: single-capsule rupture force and pressure, the ratio against applied rubbing pressure, capsules burst per rub, payload released and the number of rubs to exhaust the garment. Single Capsule Rupture Force µN
- Photochromic Dye UV Activation & Reversal Time Modeler Predicts colour-change apparel behaviour: activation rate from UV irradiance, colour developed and saturation reached over an exposure, the temperature-corrected reversal half-life, residual colour after moving indoors and time to clear below a visible threshold. Colour Developed ΔE
- Superhydrophobic Finish Contact Angle & Roll-off Predictor Models the lotus effect on treated fabric: Cassie-Baxter apparent contact angle from solid fraction, the competing Wenzel state, droplet radius and adhesion force from contact angle hysteresis, and the surface tilt at which a drop rolls off. Apparent Contact Angle °
Wet Processing (Dyeing & Printing) 14
- What to Do With a Batch That Comes Out Off Shade Premium Works out the first move on an off-shade batch by looking forward to the last attempt the cloth will survive rather than at the cost of this one. Prices topping up, stripping and re-dyeing, submitting the shade for approval and downgrading against each other, band by band, and reports what the habit of always topping up first is costing where the shade is worst. What the Right First Move Is Worth cost/yr
- Boiler Steam Requirement for Dyeing Batches Calculates the thermal energy and saturated steam needed to raise a dye bath and its fabric load to process temperature, and the heating time a given boiler capacity will take to get there. Steam per Batch kg
- Cellulase Biopolishing: Activity, Weight Loss & Strength Converts an enzyme dose and declared activity into units per kilogram of fabric, derates them for temperature and pH away from optimum, and returns the saturating weight loss, the strength it costs and the time a target weight loss actually needs. Weight Loss %
- Continuous Dyeing Range Dosing Pump Rate Calculator Synchronises chemical dosing to fabric speed on a continuous dyeing range, converting line speed, width, fabric weight and wet pick-up into litres per hour of liquor and the pump setting in millilitres per minute. Liquor Demand L/h
- Dye Exhaustion & Fixation Percentage Calculator Separates dye exhaustion from true fixation using bath concentrations before dyeing, after dyeing and after soaping, exposing how much dye was absorbed but never covalently fixed. Exhaustion %
- Dyeing Recipe & Bulk Dosing Calculator Scales a laboratory dyeing recipe to bulk, converting shade percentage on weight of fabric into kilograms of dye and grams per litre of salt and alkali into batch quantities, with a correction for commercial dye strength. Dye Required kg
- Fabric pH Neutralization Acid Dosing Calculator Calculates the volume of acid needed to bring an alkaline bath down to a target pH after scouring or reactive dyeing, from bath volume, current pH and acid normality. Acid Required L
- Lab Dip & Shade Matching Adjustment Tool Corrects an off-shade lab dip by scaling dye concentration against the measured colour strength from a spectrophotometer, and reports the Delta E position against the agreed commercial tolerance. Corrected Concentration % owf
- Liquor Ratio (MLR) & Water Consumption Calculator Converts batch weight and material to liquor ratio into dye bath volume, then totals the water drawn across the dye bath and every rinse fill, with the cost per batch and per kilogram of fabric. Dye Bath Volume L
- Mercerisation Baume, NaOH Concentration & Barium Activity Number Converts a mercerising liquor between degrees Baume, specific gravity, per cent sodium hydroxide by weight and grams per litre, computes the caustic carried on the goods at a given wet pickup, and turns AATCC 89 barium hydroxide titration figures into the barium activity number. Sodium Hydroxide % w/w
- Pad-Batch Dyeing Pick-up Calculator Determines wet pick-up on a padder from dry and wet sample weights, then converts it into liquor and dye required for the full batch and the resulting depth of shade on weight of fabric. Wet Pick-up %
- Rotary Printing Repeat Size to Screen Matcher Checks whether a design repeat divides exactly into a rotary screen circumference, and returns the adjusted repeat size that will print seamlessly along with the distortion that adjustment introduces. Seamless Repeat Size mm
- Scouring Weight Loss & Peroxide Bleaching Bath Recipe Calculates cotton scouring weight loss from non-cellulosic content and scouring efficiency, then builds the hydrogen peroxide bleach bath: bath volume from the liquor ratio, litres of commercial peroxide at its actual strength and density, available active oxygen, caustic and stabiliser charges, and the alkali to peroxide ratio. Total Preparation Weight Loss %
- Screen Printing Colour Paste Consumption Estimator Estimates print paste consumption for a run from fabric area, design coverage and the paste pick-up of the screen mesh, giving kilograms per colour, per metre and for the whole order. Total Paste Required kg
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