Patent ID: 6648926
Filing Date: 2003-11-18
Classification: D06C,Y10S,Y10T

Abstract:
A process for treating a knit fabric comprising a plurality of self-crimping bicomponent fibers comprised of poly (ethylene terephthalate) and poly (trimethylene terephthalate), and having a crimp contraction value (CCa) of at least about 10%, comprising the steps of:(a) stretching the fabric cross-directionally by about 1-15% based on the dry width of the fabric; (b) heat-setting the stretched fabric by dry heat-setting at a temperature of about 160-177Â° C. for a period of about 20-60 seconds or steam heat-setting at a temperature of about 120-145Â° C. for a period of about 3-40 seconds; (c) dyeing the heat-setted fabric; and (d) drying the fabric at a temperature no higher than about 145Â° C.