Process for preparing foamed article of vinyl chloride resin con

Details Process for preparing foamed article of vinyl chloride resin con Process for preparing foamed article of vinyl chloride resin con

1985-06-13

1988-11-08

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

264 53, 264 54, C08J 904, B29C 6722

Patent

active

047832940

ABSTRACT:
A process for preparing a foamed article of a vinyl chloride resin containing a large amount of inorganic particles, which comprises the steps of preparing a foamable composition of the resin, the inorganic particles and a blowing agent, filling a closable mold with the composition, heating the mold and the composition under pressure, and opening the mold at a temperature of not less than a softening temperature of the resin in the foamable composition. According to the process, a foamed article which has an excellent mechanical property and a high expansion ratio, and produces little calorie, smoke and poison gas can be prepared with reduced energy consumption and in a shortened production time.

REFERENCES:
patent: 3911070 (1975-10-01), Lundsager
patent: 3927159 (1975-12-01), Tomikawa et al.
patent: 4046846 (1977-09-01), Fujimori
patent: 4049593 (1977-09-01), Sato et al.

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