Mold apparatus

Details Mold apparatus Mold apparatus

1978-09-28

1980-01-22

Flint, Jr., J. Howard

Plastic article or earthenware shaping or treating: apparatus

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

Mold having movable core or movable pin

425808, 425DIG5, B29D 1100, B29F 106

Patent

active

041848357

ABSTRACT:
A mold apparatus is provided having a stationary injection mold block and a movable compression mold block. A female mold member is formed in the injection mold block whereas the compression mold block contains a movable male mold member so that when the injection and compression mold blocks are placed in an operative position, a mold cavity is defined by and between the female and male mold members. Means are provided to feed a shot of thermoplastic resin into the mold cavity and, at a predetermined time in the mold cycle, move the male mold member into co-acting, mating relationship within the female mold member so that the thermoplastic part obtained is produced by concurrently employing both injection and compression molding principles.

REFERENCES:
patent: 2357950 (1944-09-01), Goessling
patent: 3060509 (1962-10-01), McCubbins
patent: 3070846 (1963-01-01), Schrier
patent: 3226771 (1966-01-01), Szugda
patent: 3894710 (1975-07-01), Sarofeen
patent: 4082245 (1978-04-01), Santos

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