Method for enhancing thermal expandability of direct-injection f

Details Method for enhancing thermal expandability of direct-injection f Method for enhancing thermal expandability of direct-injection f

1991-08-21

1992-11-10

Foelak, Morton

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By mechanically introducing gas into material

264 53, 264DIG15, 521 58, 521 79, 521 81, 521 97, 521139, 521146, 521143, 521147, C08J 908, C08J 936

Patent

active

RE0341231

ABSTRACT:
The process of enabling foam moldings to expand further than otherwise by impregnating the expanded sheet with inorganic gases such as carbon dioxide, nitrogen, air and other pneumatogens prior to reheating to effect expansion.

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patent: 4420448 (1983-12-01), Krutchen
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patent: 4485059 (1984-11-01), Krutchen et al.
patent: 4804507 (1989-02-01), Rubens et al.
patent: 4925606 (1990-05-01), Francis et al.

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