Injection molding nozzle with pressed in heating element and int

Details Injection molding nozzle with pressed in heating element and int Injection molding nozzle with pressed in heating element and int

1995-07-17

1997-03-25

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

26432815, B29C 4520

Patent

active

056142331

ABSTRACT:
An injection molding nozzle with an outer collar portion extending around the rear end of an inner core portion. The nozzle has an electrical heating element with a helical portion extending in a spiral groove in the outer surface of the inner core portion. An integral one-piece construction is provided without having to overheat the heating element by the combination of the helical portion of the heating element being press fitted and reshaped into the groove and the outer collar portion and the inner core portion being secured together by a thermosetting ceramic sealant.

REFERENCES:
patent: 4557685 (1985-12-01), Gellert
patent: 4768283 (1988-09-01), Gellert
patent: 5052100 (1991-10-01), Trakas
patent: 5225662 (1993-07-01), Schmidt

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