Process for producing low tensile factor polyester yarn

Details Process for producing low tensile factor polyester yarn Process for producing low tensile factor polyester yarn

1977-05-23

1981-03-10

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

264235, D01D 512

Patent

active

042553776

ABSTRACT:
Yarns of balanced low tensile characteristics, especially low tensile factor (TE.sup.1/2) are produced in high speed spinning (e.g. greater than 10000 fpm) operations including an annealing stage by process control, particularly inverse spinning temperatures for given yarn. Polyethylene terephthalate yarns of balanced tensile characteristics and tensile factor of as little as 15-17 are prepared directly from a spin draw line at maximum productivity.

REFERENCES:
patent: 3553305 (1971-01-01), Au
patent: 3946100 (1976-03-01), Davis et al.
patent: 4049763 (1977-09-01), Mineo et al.

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