Method for making bicomponent polyester yarns at high spinning r

Details Method for making bicomponent polyester yarns at high spinning r Method for making bicomponent polyester yarns at high spinning r

1978-12-06

1980-08-12

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

With crimping or crinkling of strands of filaments

264171, 2642108, 428369, 428370, 428374, D01D 522, D02G 300

Patent

active

042173213

ABSTRACT:
The method of making a polyethylene terephthalate/polybutylene terephthalate bicomponent filament having improved bulking properties, wherein such a bicomponent filament is spun at a spinning speed in excess of about 3,600 meters per minute and is then passed through an isolated zone where the filament is cold drawn 5 to 100 percent prior to being wound onto a bobbin.

REFERENCES:
patent: 4019311 (1977-04-01), Schippers
patent: 4115989 (1978-09-01), Spolnecki
patent: 4117194 (1978-09-01), Baube et al.

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