Polyester fiber and process for producing the same

Details Polyester fiber and process for producing the same Polyester fiber and process for producing the same

1987-03-17

1989-09-26

Kendell, Lorraine T.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

5283082, D02G 300

Patent

active

048699586

ABSTRACT:
A polyester fiber and process embodiments for the production thereof are described, wherein the polyester fiber is produced by high-speed spinning and is characterized by a filament fineness of from 1 to 3 d, a strength of at least 4.0 g/d, an elongation of up to 40%, a crystallinity (X.rho.) of from 40 to 55%, a birefringence of from 140.times.10.sup.-3 to 165.times.10.sup.-3, an orientation function of from 0.36 to 0.45 in the amorphous portion, and a thermal shrinking stress that satisfies the relations

REFERENCES:
patent: 4134882 (1979-01-01), Frankfort et al.
patent: 4156071 (1979-05-01), Knox
patent: 4390685 (1983-06-01), Oka et al.
patent: 4415726 (1983-11-01), Tanji et al.
patent: 4426516 (1984-01-01), Kuriki et al.
patent: 4491657 (1985-01-01), Saito et al.
patent: 4690866 (1987-09-01), Kumakawa et al.

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