Method of releasing an inner mold from a rubbery elastic...

Details Method of releasing an inner mold from a rubbery elastic... Method of releasing an inner mold from a rubbery elastic...

B - Operations, Transporting

29

C

18/714

B29C 45/40 (2006.01) B29C 33/46 (2006.01) B29C 37/00 (2006.01)

Patent

CA 1219419

Abstract of the Disclosure Disclosed herein is a method of releasing an inner mold from a rubbery elastic molding having a corrugation in its inner longitudinal cavity and adapted suitably for, but not limited to, use in an electrical bushing or electrical insulator, which method comprises steps: forming a partial space connecting to a pressure source at an interface between the molding and the inner mold; supplying a pressure medium such as a gas or a liquid from the pressure source into the interface via said space to form a desired space between the molding and the inner mold over its entire zone and to expand the inner cavity of the molding; and releasing the inner mold from the molding.

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