Process for forming open cell sheet, sheet formed by process, in

Details Process for forming open cell sheet, sheet formed by process, in Process for forming open cell sheet, sheet formed by process, in

1980-03-27

1983-12-27

Anderson, Philip E.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

264 9, 264 54, 264117, 264DIG13, 264DIG60, 521 73, 521 93, 524394, 524399, 524400, B29D 2700, B32B 518

Patent

active

044231105

ABSTRACT:
A process for producing an open cell foam. The process comprises mixing a polyvinyl chloride composition, plasticizer, at least one stabilizer, and a foaming agent to form a blend; gelling the blend; forming the gelled blend into a sheet; and heating the sheet to decompose the foaming agent thereby forming the open cell foam. The sheet formed by the process. The process for forming an intermediate used in the process and the intermediate itself.

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Penn, W. S. "PVC Technology" Third Edition, New York, Wiley--Interscience, .COPYRGT.1971, pp. 265-275.
"Vinyl Chloride Processing," vol. 1, published by Nippon Zeon Co., Ltd., Jun. 1, 1968, pp. 246-247, 252-254 and 414 (translation).

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