Flash-spinning polymeric plexifilaments

Details Flash-spinning polymeric plexifilaments Flash-spinning polymeric plexifilaments

1991-02-22

1992-09-15

Lorin, Hubert C.

Plastic and nonmetallic article shaping or treating: processes

Formation of solid particulate material directly from molten...

By extrusion spraying or gravity fall through orifice

264205, 264211, 26421114, D01D 511

Patent

active

051475863

ABSTRACT:
An improved process is provided for flash-spinning plexifilamentary film-fibril strands of a fiber-forming polyolefin from a C.sub.4-7 hydrocarbon/co-solvent spin liquid that, if released to the atmosphere, presents a greatly reduced ozone depletion hazard, as compared to the halocarbon spin liquids currently-used commercially for making such strands. The resulting plexifilamentary film-fibril strands have increased tenacity and improved fibrillation compared to strands flash-spun from 100% hydrocarbon spin liquids.

REFERENCES:
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patent: 3227794 (1966-01-01), Anderson et al.
patent: 4112029 (1978-09-01), Sander et al.
patent: 5032326 (1991-07-01), Shin
patent: 5043108 (1991-08-01), Samuels
P. S. Zurer, "Search Intensifies for Alternatives to Ozone-Depleting Halocarbons", Chem. & Eng. News, pp. 17-20 (Feb. 8, 1988).

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