Method and apparatus for recovering blowing agent from scrap foa

Details Method and apparatus for recovering blowing agent from scrap foa Method and apparatus for recovering blowing agent from scrap foa

1983-12-19

1985-07-30

Hart, Charles

Gas separation

Means within gas stream for conducting concentrate to collector

55 74, 55179, 264 37, B01D 5304

Patent

active

045319502

ABSTRACT:
The present invention provides a method and apparatus which permits recovering and reusing the volatile blowing agents which are used in the production of thermoplastic foams and contained within the cellular structure of the foam. Scraps of the foam material are processed so as to recover both the blowing agent and the thermoplastic resin in a form suitable for reuse.

REFERENCES:
patent: 2838801 (1958-06-01), De Long et al.
patent: 3607999 (1971-09-01), Corbett et al.
patent: 3618301 (1971-11-01), Handman
patent: 3780744 (1973-12-01), Neel et al.
patent: 3788331 (1974-01-01), Neel et al.
patent: 3859404 (1975-01-01), Immel et al.
patent: 4065532 (1977-12-01), Wild et al.
patent: 4394333 (1983-07-01), Fukushima et al.

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