Patent ID: 6572967
Filing Date: 2003-06-03
Classification: D01F,D02G,Y10T

Abstract:
A polytrimethylene terephthalate multifilamentary yarn formed of single filaments, having a circular cross-section, of polytrimethylene terephthalate composed of 95 mol % or more of trimethylene terephthalate repeating units and 5 mol % or less of other ester repeating units, characterized in that the multifilamentary yarn satisfies the following conditions (1) to (4):(1) An intrinsic viscosity in a range from 0.7 to 1.1 dl/g (2) A single-filament size in a range from 3.3 to 8.9 dtex (3) An elongation at break in a range from 36 to 60%, and (4) A fluctuation value of yarn size (U %) of 1.2% or less.