Method of reconstituting mica

Details Method of reconstituting mica Method of reconstituting mica

1974-09-27

1976-06-29

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

Mica particles

264 63, 264125, 264332, C04b 3516

Patent

active

039668622

ABSTRACT:
A method of making reconstituted mica sheet in which dry ground mica is blended together with dry ground thermoplastic polyester to produce a dry powder mixture having no more than about 90% mica by weight of mixture, the dry powder mixture is formed into a layer, and the layer of dry powder is subjected to heat and pressure for softening the polyester and bonding the mica into sheet form. The mica used preferably is scrap mica and the polyester used preferably is scrap polyethylene terephthlate, ground to have particle size distributions as set forth in detail hereinafter.

REFERENCES:
patent: 2367047 (1945-01-01), Pellett
patent: 2542827 (1951-02-01), Minter
patent: 2760879 (1956-08-01), McDaniel et al.
patent: 3310411 (1967-03-01), Vedder et al.
patent: 3764456 (1973-10-01), Woodhams

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