Process for introducing an additive material to polymeric foams

Details Process for introducing an additive material to polymeric foams Process for introducing an additive material to polymeric foams

1981-11-10

1982-11-23

Foelak, Morton

Plastic and nonmetallic article shaping or treating: processes

Recycling of reclaimed or purified process material

Of gaseous process material

264 53, 264211, 264321, 264DIG69, 264DIG5, 521 79, 521 81, 521139, 521146, B29D 2700

Patent

active

043604862

ABSTRACT:
Improved polymeric foams are obtained by the introduction of a beneficial additive to the system by dissolving said additive into a liquid foaming agent which is a solvent therefor, combining the solution with the polymer and extruding the polymer in foamed form.

REFERENCES:
patent: 3940325 (1976-02-01), Hirao
patent: 4038250 (1977-07-01), Lind
patent: 4136142 (1979-01-01), Hargreaves et al.
patent: 4206111 (1980-06-01), Valdiserri et al.

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