Patent ID: 6808154
Filing Date: 2004-10-26
Classification: B29C,B29L

Abstract:
A device for molding hollow parts, said device comprising:a) an outer mold; b) a flexible inner mold spaced inward of said outer mold, said flexible inner mold comprising a hollow interior; c) a rigid core piece insertable into said hollow interior of said inner mold during a forming step of the molding process to hold the inner mold in engagement with the hollow part and to prevent the inner mold from collapsing inward during the forming step; d) an extraction member insertable into said hollow interior of said inner mold during an extraction step of the molding process to extract the inner mold from the hollow part after the hollow part is formed; and e) a vacuum source to apply a vacuum to said hollow interior of said inner mold to collapse said inner mold against a surface of said extraction member while the inner mold is extracted from the hollow part.