Apparatus for injection-molding plastic material items

Details Apparatus for injection-molding plastic material items Apparatus for injection-molding plastic material items

1997-02-26

2000-02-22

Heitbrink, Jill L.

Plastic article or earthenware shaping or treating: apparatus

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

With preform severing means movable relative to mold

2643289, 264161, 425566, 425572, 425577, B29C 4538

Patent

active

060273283

ABSTRACT:
A method for injection molding plastic material items and an appropriate mold are disclosed. The mold comprises at least one cavity and a gate channel for feeding molten plastic material to the cavity. The gate channel is connected to the cavity through an opening. The molten plastic material is injected into the gate channel and through the opening into the cavity. A piston may be displaced along the gate channel and over the opening for interrupting flow of molten plastic material into the cavity and for shearing off the molten plastic material along the opening, thereby closing the cavity.

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