Process for producing molded articles

Details Process for producing molded articles Process for producing molded articles

1986-01-17

1988-09-13

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By gas forming or expanding

264338, 264DIG65, 425 98, 425817R, 427135, 427422, B29C 6722, B29C 3358

Patent

active

047708271

ABSTRACT:
A process for producing molded articles, especially molded polyurethane foam articles, wherein the mold is treated with an aqueous release agent or a concentrate of one or more release-active substances in organic solvent. The release agent is preheated, e.g. by an atomizer supplied with hot pressurized air, prior to being applied to the mold. The process enables the efficient use of water-base release agents and thus reduces the emission of harmful organic solvents into the atmosphere.

REFERENCES:
patent: 2784108 (1957-03-01), Cupper
patent: 3341646 (1967-09-01), Britain
patent: 3468989 (1969-09-01), McMillan
patent: 3624190 (1971-11-01), Cekada, Jr. et al.
patent: 3625727 (1971-12-01), Lightfoot et al.
patent: 4028120 (1977-06-01), Emond
patent: 4244912 (1981-01-01), Battice
patent: 4284670 (1981-08-01), Kole
patent: 4312672 (1982-01-01), Blahak et al.
patent: 4313968 (1982-02-01), Sickles et al.
patent: 4399088 (1983-08-01), Green
Hackh's Chemical Dictionary, fourth edition, completely revised and edited by Julius Grant, New York, McGraw-Hill Book Co., .COPYRGT.1972, p. 422.
Arthur Weed, Metal Finishing, May 1959 (pp. 70-71).
European Pat. Office Search Report.

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