Patent ID: 6528139
Filing Date: 2003-03-04
Classification: D01F,D02G,Y10T

Abstract:
A process for producing yarn having reduced heatset shrinkage comprising the steps of:(a) texturing a yarn of bicomponent fibers having a nylon 6 sheath and a core of a fiber-forming polyolefin selected from the group consisting of polypropylene and copolymers thereof, and (b) applying steam to the yarn of bicomponent fibers at a temperature of about 118Â° C. to about 123Â° C. using a steaming unit, wherein the heatset shrinkage of the yarn of bicomponent fibers is about one third to about one half of the heatset shrinkage of a yarn formed of 100 percent nylon 6 fibers and having steam applied thereto at said temperature.