Multiple sprew bar stack mold

Details Multiple sprew bar stack mold Multiple sprew bar stack mold

1988-06-14

1989-12-05

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Sets of press couples comprising registering female mold...

Stacked

2642972, 2642977, 2643288, 425567, 425572, 425574, 425581, 425588, B29C 4512

Patent

active

048849626

ABSTRACT:
The present invention provides in a stack mold with back to back centrally located mold cavities a multiple sprue bar arrangement including a pair of sprue bars balanced on opposite sides of the mold and connecting bridge across the sprue bars for interfacing to a plastic injector. At least one of the sprue bars provides a plastic flow path from the connecting bridge to the mold cavities.

REFERENCES:
patent: 3417433 (1968-12-01), Teraoka
patent: 4539171 (1985-09-01), Sorensen

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