Process for producing low density polethylenic foam with atmosph

Details Process for producing low density polethylenic foam with atmosph Process for producing low density polethylenic foam with atmosph

1998-11-02

1999-05-18

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, 264 51, 264DIG5, 521 82, 521 91, 521 92, 521 97, 521142, 521143, 521 79, C08J9/08;9/12

Patent

active

059050985

ABSTRACT:
Members either of the polyglycol family of substances, more generally, or of the polyglycol ether subset of polyether compounds, more particularly, both for their gas absorption properties and for their plasticizing effect in a polyethylenic extrudate, are combined with physical atmospheric blowing agents, such as, nitrogen, argon, carbon dioxide, water, and blends thereof, to produce uncrosslinked polyethylenic foams having densities as low as 10 kg/m.sup.3.

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