Method of producing high quality dark dyeing polyester and resul

Textiles: spinning – twisting – and twining – Apparatus and processes – Open end spinning

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57404, D01H 400

Patent

active

060677856

ABSTRACT:
A method is disclosed for spinning polyester staple to produce dark dyeing yarns as compared to yarns having an otherwise similar composition. The method includes spinning polyester staple into yarn, in which the polyester includes between about 0.5 and 4 percent by weight of polyethylene glycol, into yarn in a rotor spinning machine at a rotor speed of between about 110,000 and 120,000 rpm and at a tension of between about 2.5 and 3.2 grams/tex. A resulting polyester fiber is also disclosed of between about 1.2 and 2.25 denier per filament, and that contains between about 0.5 and 4 percent by weight of polyethylene glycol, and with a fiber tenacity of 4.7 grams per denier or less.

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patent: 5694759 (1997-12-01), Caviness

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