FALSE TWISTED COVERED ELASTIC YARN AND METHOD FOR PRODUCING THE SAME

摘要

PROBLEM TO BE SOLVED: To obtain a false twisted covered elastic yarn having much more improved bulkiness and volume feeling and to provide a method for producing the same. SOLUTION: This false twisted covered elastic yarn has a twistless covered structure obtained by coating a polyurethane elastic yarn 1 of a core part with a polyamide multifilament false twist yarn 2 having 70-155 dtex fineness in a substantially twistless manner and has >=5.0 apparent yarn diameter ratio and 50-80% stretch recovery. The polyurethane elastic yarn is arranged in parallel with a polyamide multifilament yarn spun and taken up at 250-5,000 m/minute take-up speed and doubled to give a double yarn. The double yarn is subjected to frictional false twisting at 160-185 deg.C at 1.1-1.3 false twist tension ratio to produce the objective false twisted covered elastic yarn.