Expansible mold for the manufacture of plaster pieces

Details Expansible mold for the manufacture of plaster pieces Expansible mold for the manufacture of plaster pieces

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Patent

CA 1046247

EXPANSIBLE MOLD FOR THE MANUFACTURE OF PLASTER PIECES ABSTRACT OF THE DISCLOSURE An expansible mold for the fabrication of plaster parts having reliefs in the side walls comprising at least two walls and non-compressible deformable parts between two parallel side edges of the walls in which, under pressure, the deformable parts acquire the profile to be imparted to the molded plaster part, and which retract from the molded plaster part upon re- lease of pressure to enable removal of the molded part without loss of a tight sealing relation with the mold.

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