POLY(TRIMETHYLENE TEREPHTHALATE) YARN

摘要

A process for spinning a direct-use yarn, comprising extruding a polyester polymer through a spinneret to form non-round filaments at a spinning speed less than 4500 mpm and a temperature between about 255 ~C and about 275 ~C, wherein said polymer comprises at least 85 mole % poly(trimethylene terephthalate) wherein at least 85 mole % of repeating units consist of trimethylene units, and wherein said polymer has an intrinsic viscosity of a t least 0.70 dl/g, the direct-use yarn and its use.