Process for producing a smooth polyester yarn and polyester...

Details Process for producing a smooth polyester yarn and polyester... Process for producing a smooth polyester yarn and polyester...

D - Textiles, Paper

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D02J 13/00 (2006.01) D01D 5/16 (2006.01) D01F 6/62 (2006.01) D02J 1/22 (2006.01)

Patent

CA 1292602

A B S T R A C T "PROCESS FOR PRODUCING A SMOOTH POLYESTER YARN AND POLYESTER YARN PRODUCED BY SAID PROCESS" In a process for producing a smoothy, low-shrinkage polyester filament yarn, the starting point is high-speed spun POY. The polyester POY is cold-drawn and then subjected to a hot relaxation under an overfeed of 10 to 20% at 140 to 250°C in a dry medium or at 70 to 140°C in a wet medium and if desired intermingled. The result is a yarn having an initial modulus of 200 to 800 cN/tex and a boil shrinkage of less than 3%. The yarn is suitable for use as a replacement material for cellulose acetate.

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