Apparatus for injection molding using active material elements

Details Apparatus for injection molding using active material elements Apparatus for injection molding using active material elements

2007-11-13

2007-11-13

Heitbrink, Tim (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

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

With shrinkage compensation means

C264S328700

Reexamination Certificate

active

10830436

ABSTRACT:
Method and apparatus for compressing melt and/or compensating for melt shrinkage in an injection mold are provided. The apparatus includes a cavity mold portion adjacent a cavity plate, a core mold portion adjacent a core plate, a mold cavity formed between the mold portions, and at least one piezoceramic actuator disposed between either or both of the core plate and the core mold portion and the cavity plate and the cavity mold portion. A controller may be connected to the at least one piezoceramic actuator to activate it, thereby causing the mold cavity volume to decrease, compressing the melt.

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