Molding apparatus with degassing mechanism

Details Molding apparatus with degassing mechanism Molding apparatus with degassing mechanism

1992-04-09

1994-01-04

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

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

With means to evacuate mold or provide controlled environment

264102, 26432812, 425573, 425812, B29C 4534

Patent

active

052755495

ABSTRACT:
The molding apparatus of the invention includes a molding cavity, a flow regulating portion and a degassing portion. The flow regulating portion is situated in a die to communicate between the molding cavity and the degassing portion and regulates molten material to pass through the flow regulating portion without forming turbulent flow therein. Therefore, the molten material enters into the degassing portion throughout the entire width of the degassing portion. Because of the flow regulating portion, the degassing portion may be made small, but the molten material can be properly solidified at the degassing portion without forming partial flow. Gas or air can be sufficiently removed from the die.

REFERENCES:
patent: 3349833 (1967-10-01), Hodler
patent: 5092759 (1992-03-01), Lichtinger et al.

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