HEAT-FUSIBLE POLYURETHANE ELASTIC FIBER, METHOD FOR PRODUCING THE SAME AND WOVEN OR KNITTED FABRIC USING THE POLYURETHANE ELASTIC FIBER

摘要

PROBLEM TO BE SOLVED: To obtain a heat-fusible polyurethane elastic fiber hardly causing fray by wet-heat treatment and a woven or knitted fabric hardly causing fray, etc., by using a composite yarn such as a single covering yarn in which the polyurethane elastic fiber is used as a core yarn and the circumference of the yarn is covered with an inelastic yarn.;SOLUTION: In a method for knitting a single covering yarn, the heat-fusible polyurethane elastic fiber has a thermal fusion force at 120°C for 20 seconds of ≥0.30cN/dtex.;COPYRIGHT: (C)2007,JPO&INPIT