| 摘要 |
A twist-free texturing feed yarn of drawn thermoplastic filaments is prepared from a bundle (A) of filaments having a melting point of 255 DEG to 275 DEG C. and a bundle (B) of filaments having a melting point above 230 DEG C. which is 15 DEG to 39 DEG C. lower than that of the filaments of bundle (A). The bundles differ in coloration or affinity for dyestuffs. The feed yarn is false-twist textured at a temperature 53 DEG to 78 DEG C. lower than the melting point of the filaments of bundle (A) to produce a textured yarn which provides a heather of high contrast and low directionality (no color streaks) in fabric made from the yarn. Filament compositions illustrated are poly(ethylene terephthalate) or poly[ethylene terephthalate/5-(sodium sulfo)isophthalate] or poly(hexamethylene adipamide) for bundle (A); and poly(ethylene terephthalate/glutarate) or poly(ethylene terephthalate/adipate) or poly(ethylene/2,2-dimethyl-1,3-propylene terephthalate) for bundle (B).
|
