Closed cell, low density ethylenic polymer foam produced with in

Details Closed cell, low density ethylenic polymer foam produced with in Closed cell, low density ethylenic polymer foam produced with in

1994-05-10

1995-05-16

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

264 50, 521 82, 521 97, 521143, C08J 912

Patent

active

054161290

ABSTRACT:
An uncrosslinked, closed cell, low density ethylenic polymer foam having a density of less than 150 kg/m.sup.3 is prepared from, for example, uncrosslinked low density polyethylene using inorganic blowing agents, such as carbon dioxide, argon, or mixtures thereof. A process for preparing such uncrosslinked, closed cell, low density ethylenic polymer foam comprising extruding a ethylenic polymer of suitable melt tension using a 100 percent inorganic blowing agent, such as carbon dioxide, argon, or mixtures thereof, and the foams produced with this process are also disclosed.

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