Method for applying mold-releasing agent onto mold surfaces usin

Details Method for applying mold-releasing agent onto mold surfaces usin Method for applying mold-releasing agent onto mold surfaces usin

1988-11-07

1990-09-11

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

With step of cleaning, polishing, or preconditioning...

264300, 264325, 427133, B29C 3368

Patent

active

049561324

ABSTRACT:
A method of applying a mold-releasing agent to the molding surfaces of a mold after cleaning the surface. This method involves inserting a mold-releasing sheet between said molding surfaces of a mold coating the molding surfaces with the mold releasing agent by heating and pressing the mold-releasing sheet to cure it, and removing the cured sheet from the molding surfaces of the mold. This mold-releasing sheet is composed of (i) uncured rubber, (ii) a curing agent, and (iii) a mold releasing agent. The uncured rubber can be selected from a group consisting of chloroprene rubber, butadiene rubber, nitrile rubber, ethylene-propylene terpolymer rubber, styrene-butadiene rubber, polyisoprene rubber, butyl rubber, silicone rubber, and fluoridated rubber.

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