Production of fibrils

Details Production of fibrils Production of fibrils

1973-09-20

1977-02-08

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

To form particulate product

162157R, 264 13, 264205, D01D 504

Patent

active

040072479

ABSTRACT:
Fibrils of thermoplastic polymer, particularly crystalline thermoplastic polymers such as polyethylene and polypropylene, are prepared by forcing a dispersion of heat softened polymer particles in a liquid medium through a pair of opposed co-axial orifices. The liquid medium is preferably aqueous and is pressurized to prevent boiling. The resulting fibrils have some degree of molecular orientation, and may be useful in the production of reinforced paper.

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patent: 3808091 (1974-04-01), Aoki et al.
patent: 3885014 (1975-05-01), Fukada et al.

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