Process of making a non-circular cross-sectional fiber

Details Process of making a non-circular cross-sectional fiber Process of making a non-circular cross-sectional fiber

1996-10-21

1998-05-19

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

264211, D01D 5253

Patent

active

057531668

ABSTRACT:
A melt extrusion composition made by combining about 99.9 to about 98.5 weight percent of at least one polyester and about 0.1 to about 1.5 weight percent additive provides for a polyester or copolyester non-circular cross-sectional fiber having at least four percent improved shape retention as compared to the same fiber made from a melt extrusion composition without the additive. The additive is present at the air-polymer interfacial surface during melt spinning. A method of making the fiber is also disclosed.

REFERENCES:
patent: 3193516 (1965-07-01), Broatch et al.
patent: 3914488 (1975-10-01), Gorrafa
patent: 4380594 (1983-04-01), Siggel et al.
patent: 4766181 (1988-08-01), Ostrozynski et al.
patent: 4923914 (1990-05-01), Nohr et al.
patent: 5057368 (1991-10-01), Largman et al.
Derwent Abstracts WPI Accession No. 87-097854, Japan 62-45,722 (Published Feb. 27, 1987).

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