Stabilizing hard segment crystallization via controlled thermal quenching and stenter dwell times eliminates elastomeric creep and width variation in stretch goods.
Controlled stenter dwell at 185-195°C stabilizes polyurethane hard segments to minimize viscoelastic force decay and garment bagging in stretch wovens.
Exceeding 3.5 elastane draft without heat-setting crosslinking causes sheath slip under prolonged static load.
Optimize air-jet polyurethane wovens by setting stenters to 190°C with +24% overfeed, holding heat setting efficiency above 88% and growth below 2.5%.
Modeling long-term stress relaxation thresholds in core-spun jet processed elastic fabrics requires balancing spinning core draft with stenter heat setting to prevent interfacial shear slip and retractive decay.
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