Process for producing a foamed polyvinyl alcohol film

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...

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521 97, C08F 1606, C08J 900

Patent

active

051478994

ABSTRACT:
A process for producing a foamed polyvinyl alcohol film, which comprises mechanically foaming an aqueous solution containing a polyvinyl alcohol and a plasticizer, coating the foamed solution on the substrate, followed by heat-drying.

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Chemical Abstracts, vol. 77, No. 12, abstract no. 76083q, Columbus, Ohio, U.S.; and JP-A-46 035 972.
Database WPI No. 80, abstract No. 67352c, Derwent Publications Ltd., London, GB; and SU-A-713 901.

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