Patent ID: 7036299
Filing Date: 2006-05-02
Classification: D01F,D02G,Y10T

Abstract:
1. A spun yarn having a total boil-off shrinkage of at least about 22% comprising cotton and a bicomponent staple fiber comprising poly(ethylene terephthalate) and poly(trimethylene terephthalate) said bicomponent staple fiber having: a) a tow crimp development value of about 35% to about 70%; b) a tow crimp index value of about 14% to about 45%; c) a length of about 1.3 cm to about 5.5 cm; and d) a linear density of about 0.7 decitex per fiber to about 3.0 decitex per fiber; e) the difference between the crimp index and the crimp development values is about 24% to about 35% absolute; wherein the bicomponent staple fiber is present at a level of about 20 wt %, to about 65 wt %, based on total weight of the spun yarn; and wherein the cotton is present at a level of about 35 wt % to about 80 wt %, based on total weight of the spun yarn.