Process for making poly(trimethylene terephthalate) yarn

Details Process for making poly(trimethylene terephthalate) yarn Process for making poly(trimethylene terephthalate) yarn

D - Textiles, Paper

01

F

D01F 6/62 (2006.01) D01D 5/088 (2006.01) D01D 5/16 (2006.01) D01D 10/00 (2006.01) D02G 1/00 (2006.01)

Patent

CA 2252138

Poly(trimethylene terephthalate) filaments which have been extended through a spinneret and coated area tensioned without inducing permanent stretch, heated to a temperature higher than its glass transition temperature but lower than its crystallization temperature, and then drawn to a draw ratio of 1.25 to 4.0 prior to winding to provide filaments for yarns that resist physical aging and are useful in the fabrication of carpeting and pile fabrics.

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