BICOMPONENT FIBER AND YARN COMPRISING SUCH FIBER

摘要

The present invention is an aspect ratio A: B (where, A is a fiber cross-section major axis length, B is a fiber cross-section and shortening Im) is about 2: 1 to about 5: has a cross-section 1 is substantially oval, the polymeric surfactant the long axis and substantially vertical, and the cross-sectional shape is side-by-side and eccentric sheath-is selected from the group consisting of core, at 10% elongation and nasal also about 1.1 cN / dtex to about 3.5 cN / dtex, is also holding the free fiber length about 40% to about 85%, and the bicomponent staple fiber, and a bicomponent staple fiber containing a tow crimp generation value is about 30 to 55%, poly (ethylene terephthalate) and poly (trimethylene terephthalate) It provides a spun yarn comprising a. ; The bicomponent staple fibers, poly (ethylene terephthalate), poly (trimethylene terephthalate) yarn, cotton