Dynamic mold seal

Details Dynamic mold seal Dynamic mold seal

1999-04-12

2000-11-14

Pyon, Harold

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

425810, 264 133, B29C 4564

Patent

active

061461253

ABSTRACT:
A dynamic mold seal for a mold having two relatively movable mold halves is provided. The dynamic mold seal is formed by a sealing ring mounted or secured to a first one of the mold halves. The sealing ring includes a rigid ring portion and a sealing portion including a flexible sealing member for preventing leakage of the pressurized molten material from the mold and thereby preventing the creation of flash about the molded article. The flexible sealing member is preferably formed by a reduced cross section portion of the sealing portion.

REFERENCES:
patent: 5092759 (1992-03-01), Lichtinger et al.
patent: 5427520 (1995-06-01), Shimizu et al.
patent: 5720994 (1998-02-01), Asai
patent: 5804229 (1998-09-01), Asai

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