Dynamic mold seal

Details Dynamic mold seal Dynamic mold seal

1999-03-12

2000-11-07

Pyon, Harold

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

264 133, 264106, 264107, 2643287, 2643289, 425810, B29C 4564

Patent

active

061432318

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: 5427520 (1995-06-01), Shimizu et al.
patent: 5720994 (1998-02-01), Asai

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