| 摘要 |
This invention is a process for the production of staple fibers from poly(trimethylene terephthalate) for conversion into carpets which comprises: (a) extruding poly(trimethylene terephthalate) at a melt temperature of 240 to 280° C. into round, trilobal, delta, multi-lobal, or hollow cross section staple fiber tow, (b) quenching the fiber tow such that the undrawn filament tow has a crystallinity of <=25%, preferably <=20%, (c) prior to drawing, heating the fiber tow to temperature of 35° C. to 65° C., preferably between 35 and 55° C., to control crystallization, and (d) drawing the staple fiber tow into staple fibers.
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