Plastic article or earthenware shaping or treating: apparatus – Sets of press couples comprising registering female mold... – Stacked
Patent
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
Heitbrink Timothy W.
Izon Industries Inc.
Woo Jay H.
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