Injection molding nozzle

Details Injection molding nozzle Injection molding nozzle

2008-05-13

2008-05-13

Heitbrink, Tim (Department: 1791)

Plastic article or earthenware shaping or treating: apparatus

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

With means between charger and mold to cut off flow of...

C425S566000

Reexamination Certificate

active

11254518

ABSTRACT:
In a hot channel injection molding nozzle comprising a nozzle body including a mass flow channel for a melt to be injected into a mold, wherein the nozzle body has a nozzle outlet opening at one end and an inlet opening disposed at one side of the other end of the nozzle body and a valve needle extending through the nozzle body to the outlet opening for blocking the melt flow, a valve needle guide sleeve is disposed in the nozzle body so as to delimit the mass flow channel in the area of the inlet opening with the valve needle extending through the guide sleeve.

REFERENCES:
patent: 2972776 (1961-02-01), Siegrist
patent: 4286941 (1981-09-01), Gellert
patent: 4781554 (1988-11-01), Hendry
patent: 4783298 (1988-11-01), Oda
patent: 4919606 (1990-04-01), Gellert
patent: 5090890 (1992-02-01), Morita
patent: 5104305 (1992-04-01), Kawaguchi et al.
patent: 5700499 (1997-12-01), Bauer
patent: 6234783 (2001-05-01), Shibata et al.
patent: 6638050 (2003-10-01), Bazzo et al.

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