Blasting media and method of manufacture comprising polycarbonat

Details Blasting media and method of manufacture comprising polycarbonat Blasting media and method of manufacture comprising polycarbonat

1978-10-11

1980-08-19

Seccuro, Carman J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C08L 6900, C08L 2308

Patent

active

042185475

ABSTRACT:
In accordance with the invention there is provided a blasting media, particularly useful for deflashing and deburring, consisting of small cylindrical pellets of a resin material containing from 1% to 8% by weight ethylene-carbon monoxide-vinyl acetate terpolymer and the remainder substantially all polycarbonate resin. Further in accordance with the invention, such blasting media is made by simultaneously heating and mixing a mixture of the polycarbonate resin and terpolymer in the proportions specified, to render the mixture molten, extruding the mixture to cylindrical shape and cutting the extruded mixture into pellets.

REFERENCES:
patent: 3431224 (1969-03-01), Goldblum
patent: 3780140 (1973-12-01), Hammer
patent: 3801673 (1974-04-01), O'Connell

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