Valve gate injection molding apparatus

Details Valve gate injection molding apparatus Valve gate injection molding apparatus

1993-12-16

1995-01-03

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

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

With means to heat or cool

264102, 26432815, 425564, 425566, 425812, B29C 4523

Patent

active

053781384

ABSTRACT:
A valve gate injection molding apparatus, in which the gas produced within a heating probe is discharged through a gas discharge outlet groove from the base side of a valve pin, leak of the resin melt is prevented by flowing a cooling fluid for controlling the temperature to increase viscosity of the resin melt, and preventing overheat of the valve pin actuating assembly caused by heat conduction from the heated and pressurized resin melt.

REFERENCES:
patent: 4026518 (1977-05-01), Gellert
patent: 4538666 (1985-09-01), Takeshima et al.
patent: 4740151 (1988-04-01), Schmidt et al.
patent: 4747770 (1988-05-01), Schmidt
patent: 4779667 (1988-10-01), Fujino et al.
patent: 5238391 (1993-08-01), Teng

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