High draw ratio polyester feed yarn and its draw texturing

Details High draw ratio polyester feed yarn and its draw texturing High draw ratio polyester feed yarn and its draw texturing

1976-06-23

1978-05-30

Phynes, Lucille M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

264210F, C08G 6370

Patent

active

040922995

ABSTRACT:
Significantly higher productivity of polyester feed yarn is achieved when the polymer from which the feed yarn is melt spun is chain-branched with multifunctional chain branchers having 1-15 microequivalents of reactive branching sites based on one gram of the polymer. This productivity increase (over conventional production employing the same spinnerette in accordance with teachings of the prior art as applied generally to unbranched polymers) may be achieved specifically by spinning a feed yarn (of the same filament denier and draw ratio) at a higher throughput rate at a higher windup speed followed by draw-texturing (at the same draw ratio to the same drawn denier); or by spinning at a higher throughput rate employing the same windup speed a feed yarn of higher denier and draw-ratio followed by draw-texturing at the higher draw ratio to the same drawn denier; or by any combination thereof.
The invention herein claimed includes the high draw ratio polyester feed yarn as a new product and the process of draw-texturing high draw ratio polyester feed yarn as a new process.

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