Manufacture of fibrids of polyolefins

Details Manufacture of fibrids of polyolefins Manufacture of fibrids of polyolefins

1976-08-16

1978-08-29

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Formation of solid particulate material directly from molten...

By extrusion spraying or gravity fall through orifice

162157R, 264140, 528502, D21F 1100

Patent

active

041103858

ABSTRACT:
Fibrids of polyolefins showing a high degree of fibrillation and a high specific surface area are obtained by flashing a pressurized solution of polyolefin in pentane or in a pentane-containing solvent mixture at a temperature above the boiling point of the solvent by passing said solution through an orifice into a space which is at a lower pressure and in which shearing forces are applied to said solution. The fibrids directly obtained may be used, for example, for the manufacture of paper or for the manufacture of textile-like webs.

REFERENCES:
patent: 2965629 (1960-12-01), Fawcett
patent: 3081519 (1963-03-01), Blades et al.
patent: 3891499 (1975-06-01), Kato et al.
patent: 3950293 (1976-04-01), Sanders et al.
patent: 3960794 (1976-06-01), Sanders et al.
patent: 3992344 (1976-11-01), Sanders et al.
patent: 3995001 (1976-11-01), Vroomans et al.

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