Fabrication of discontinuous fibrils

Details Fabrication of discontinuous fibrils Fabrication of discontinuous fibrils

1975-06-09

1977-05-24

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

162157R, 264 12, 264141, 528483, 528502, B29C 1706

Patent

active

040255930

ABSTRACT:
A continuous fibrillated structure, formed by the abrupt pressure release of a two-phase liquid mixture of polymer and solvent at elevated temperature and pressure so as to cause the instantaneous vaporization of the solvent, is shredded by introducing a make-up fluid into the two-phase liquid mixture before the pressure release is complete.

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patent: 3885014 (1975-05-01), Fukada et al.
patent: 3920362 (1975-11-01), Bradt

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