Patent ID: 6333106
Filing Date: 2001-12-25
Classification: D01F,D02G,Y10T

Abstract:
A draw textured yarn made by continuous draw-texturing a partially oriented feed yarn with the following steps:(a) providing a partially oriented feed yarn made from a polyester polymer, wherein (i) said polymer comprises at least 85 mole % poly(trimethylene terephthalate) wherein at least 85 mole % of repeating units consist of trimethylene units, (ii) the polymer has an intrinsic viscosity of at least 0.70 dl/g, and (iii) the partially oriented yarn has an elongation to break of 110-137.1%;(b) heating the partially oriented feed yarn in a heater set to a temperature between about 160.degree. C. and 200 .degree.C.;(c) twisting the yarn using a twist insertion device such that in a region between the twist insertion device and up to and including the heater, the yarn has a twist angle of about 46 degrees to about 52 degrees; and(d) winding the yarn on a winder.