Textile Engineering
Polymer Rheology & Synthetic Extrusion
14 interactive Polymer Rheology & Synthetic Extrusion 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
14
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Fibre & Raw Material
Polymer Rheology & Synthetic Extrusion
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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
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