Title: C-shaped polyester filaments

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.

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Inventors: Jackson, Henry G. (Greenville, SC, US)

Application Number: 902199
Filing Date: 1978-05-02
Publication_date: 1979-11-27
Assignee: Phillips Petroleum Company (Bartlesville, OK)
Primary Class(es): 428/397 156/500, 264/177.13
Other Classes:
US Patent Ref:

2403473	Jul, 1946	Kohorn	264/177.
2666976	Jan, 1954	Olmer et al.	264/177.
2804645	Sep, 1957	Wilfong	264/177.
2831748	Apr, 1958	Foulayson et al.	264/177.
3063094	Nov, 1962	Warthen	264/177.
3109195	Nov, 1963	Combs et al.	264/177.
3340571	Sep, 1967	Bishop et al.	264/177.
3981948	Sep, 1976	Phillips	264/177.

Other Refs: 43-1666648-4356649-33696

Jul, 1968	JP
Dec, 1973	JP
Sep, 1974	JP

Primary Examiner: Woo, Jay H.
Assistant Examiner:
Attorney: