Textile Engineering
Nonwovens & Technical Webs
30 interactive Nonwovens & Technical Webs tools. Every one shows its formula, a worked example and the standards it follows.
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- 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
30
tools
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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