C-shaped polyester filaments

Details C-shaped polyester filaments C-shaped polyester filaments

1978-05-02

1979-11-27

Woo, Jay H.

Stock material or miscellaneous articles

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

Rod, strand, filament or fiber

156500, 264177F, B28B 2154

Patent

active

041762118

ABSTRACT:
A method for producing polyester filament having a cross-section of C-shape by melt spinning polyester through a spinneret so that each filament is made through an array of holes having a center hole with eight holes equally spaced around the center hole with the size and spacing of the holes within a specified relationship. A method for producing partially oriented yarn having a cross-section of C-shape. A polyester filament produced, a yarn composed of a multiplicity of these filaments, and a fabric produced from the yarn.

REFERENCES:
patent: 2403473 (1946-07-01), Kohorn
patent: 2666976 (1954-01-01), Olmer et al.
patent: 2804645 (1957-09-01), Wilfong
patent: 2831748 (1958-04-01), Foulayson et al.
patent: 3063094 (1962-11-01), Warthen
patent: 3109195 (1963-11-01), Combs et al.
patent: 3340571 (1967-09-01), Bishop et al.
patent: 3981948 (1976-09-01), Phillips

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