Process for producing polyester fibers

Details Process for producing polyester fibers Process for producing polyester fibers

1989-07-25

1991-05-07

Lorin, Hubert C.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

26421117, 264234, 264235, 264345, 264346, D01D 512, D01F 662

Patent

active

050135066

ABSTRACT:
Melt-spun polyester fibers are taken up in the absence of heat at a speed of 5,000 to 6,000 m/min under conditions that satisfy the following relations (IX) and (X), subsequently heat-treating the fibers for a period of from 0.01 to 0.05 seconds with a heating roller while the length of the melt-spun fibers is held constant with no drawing step being provided between the taking up and heat treatment steps, and finally winding up the heated fibers

REFERENCES:
patent: 2604667 (1952-07-01), Hebeler
patent: 2604689 (1952-07-01), Hebeler
patent: 3946100 (1976-03-01), Davis et al.
patent: 4049763 (1977-09-01), Mineo et al.
patent: 4134882 (1979-01-01), Frankfort et al.
patent: 4390685 (1983-06-01), Oka et al.
patent: 4687610 (1987-08-01), Vassilatos

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