Gas-assisted injection mold

Details Gas-assisted injection mold Gas-assisted injection mold

1997-09-30

1999-09-07

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

Means feeding fluent stock from plural sources to common...

264572, B29C 4516

Patent

active

059484454

ABSTRACT:
A gas-assisted injection mold has a gas injection nozzle protruding into a mold cavity from a mold surface that defines a part of the mold cavity. The mold surface has a barrier in a spaced surrounding relationship to the gas injection nozzle to prevent the plastic melt from being lifted away from the mold surface as gas is injected into the plastic melt in the mold cavity. The barrier may take the form of a well or a boss.

REFERENCES:
patent: 5162230 (1992-11-01), Ziegler et al.

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