Mold for molding discs

Details Mold for molding discs Mold for molding discs

1997-06-16

1998-09-08

Davis, Robert

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

With product ejector

425437, 425810, B29C 4543

Patent

active

058042296

ABSTRACT:
A mold for molding discs includes a outer stamper retainer with an outer peripheral retaining foot to closely contact on the surface of a stamper not to permit compressed air to lead outwards and an inner peripheral retaining foot to contact permit compressed air for releasing molded discs from the stamper to be blown through a groove located between the both feet resulting in increasing the performance of compressed air for releasing molded discs from the stamper.

REFERENCES:
patent: 4790738 (1988-12-01), Shimojo et al.
patent: 4795127 (1989-01-01), Asai
patent: 4979891 (1990-12-01), Kitamura
patent: 5092758 (1992-03-01), Tanaka et al.
patent: 5180595 (1993-01-01), Kinoshita
patent: 5297951 (1994-03-01), Asai
patent: 5626890 (1997-05-01), Asai

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