Patent ID: 6383632
Filing Date: 2002-05-07
Classification: D01F,Y10T

Abstract:
A drawn yarn made by the following process:(1) providing a polyester polymer having an intrinsic viscosity of at least 0.80 dl/g comprising at least 85 mole % poly(trimethylene terephthalate) wherein at least 85 mole % of repeating units consist of trimethylene units; (2) spinning the polyester polymer by melt-extruding the polyester polymer at a temperature between about 255Â° C. and 275Â° C. to form a partially oriented feed yarn; (3) preparing a drawn yarn from the partially oriented feed yarn, wherein said drawn yarn has the following characteristics: (a) a denier per filament less than about 1.0; and (b) an actual draw ratio within 10 percent of a predicted draw ratio, wherein the predicted draw ratio is determined according to: [(elongation to break of the feed yarn)+115]/[(elongation to break of the drawn yarn)+115)].