Plastic and nonmetallic article shaping or treating: processes – With printing or coating of workpiece – Anti-stick or adhesion preventing coating
Patent
1994-03-24
1995-11-07
Howard, Jacqueline V.
Plastic and nonmetallic article shaping or treating: processes
With printing or coating of workpiece
Anti-stick or adhesion preventing coating
264326, 252 25, 252 28, 252 29, 252 493, 252 495, 252 496, 252 497, 252 58, 252 30, B29C 3360, C10M14702
Patent
active
054645867
ABSTRACT:
An environment-friendly aqueous slip and mold-release agent for the manufacture of tires and other rubber articles and a process for the molding and vulcanization of tires and other rubber articles are described. The aqueous slip and mold-release agent contains 0.5 to 6 wt. % polytetrafluoroethylene, 20 to 40 wt. % mineral fillers and at least 40 wt. % water. It is sprayed onto the inside of the tire blank prior to the molding and vulcanization, so that the water contained therein evaporates, accompanied by development of a slip and release agent film. Apart from the environment-friendliness and good release effect, the new slip and mold-release agent leads, despite the high water content, to a quick evaporation of the water and thus a rapid development, desired in industrial operations, of the slip and release agent film. The excellent effectiveness of the slip and mold-release agent according to the invention results in a substantial prolongation of the life of the heating membrane used for the molding and vulcanization.
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Diamond Alan D.
Howard Jacqueline V.
Rhein Chemie Rheinau GmbH
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