Disc molding apparatus

Details Disc molding apparatus Disc molding apparatus

1990-05-14

1992-03-03

Chiesa, Richard L.

Plastic article or earthenware shaping or treating: apparatus

Press forming apparatus having opposed press members

Male shaping member and female mold

425542, 425556, 425810, B29C 4543

Patent

active

050927582

ABSTRACT:
A disc molding apparatus capable of satisfactorily accomplishing the release of a molded disc without any trouble to eliminate deformation of the disc during the release and improve quality, reliability and productivity of the disc. In the disc molding apparatus, an air inlet port is provided in proximity to an outer stamper holder of an outer ring for supplying air toward a central region of a disc molded in a cavity of a mold body from a periphery of the disc and a communication passage communicating with the air inlet passage is provided at the outer ring, so that air may be more uniformly blown against the disc during the release of the disc from a stamper.

REFERENCES:
patent: 4185955 (1980-01-01), Holmes et al.
patent: 4375948 (1983-03-01), Von Holdt
patent: 4391579 (1983-07-01), Morrison
patent: 4648834 (1987-03-01), Von Holdt
patent: 4653997 (1987-03-01), Sheffield et al.
patent: 4660801 (1987-04-01), Schad
patent: 4790738 (1988-12-01), Shimojo et al.

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