Patent ID: 6656586
Filing Date: 2003-12-02
Classification: D01D,D01F,Y10T

Abstract:
A bicomponent fiber comprising poly(ethylene terephthalate) and poly(trimethylene terephthalate) and having:a weight ratio of poly(ethylene terephthalate) to poly(trimethylene terephthalate) of at least about 30:70; a weight ratio of poly(ethylene terephthalate) to poly(trimethylene terephthalate) of no more than about 70:30; a scalloped oval cross-section selected from the group consisting of side-by-side and eccentric sheath-core; a cross-section long axis; a boundary between the poly(ethylene terephthalate) and the poly(trimethylene terephthalate) that is substantially parallel to the cross-section long axis; and a plurality of longitudinal grooves.