Metal mold for injection molding tubular or columnar...

Details Metal mold for injection molding tubular or columnar... Metal mold for injection molding tubular or columnar...

B - Operations, Transporting

29

C

18/708

B29C 45/26 (2006.01) B29D 23/00 (2006.01)

Patent

CA 1321693

Abstract A metal mold for injection molding tubular or columnar products is provided in which the portions of matching surfaces of metal mold members which are close to end portions of an annular or cylindrical cavity are provided with grooves extending continuously or intermittently so as to surround said end portions of said annular or cylindrical cavity.

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