Coated injection molding nozzle

Details Coated injection molding nozzle Coated injection molding nozzle

1988-02-01

1989-01-03

Nozick, Bernard

Plastic article or earthenware shaping or treating: apparatus

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

With means to heat or cool

219421, A23P 100

Patent

active

047953373

ABSTRACT:
This invention relates to an improved injection molding nozzle and method of making it. The components are assembled and dipped in lacquer and powdered nickel prior to brazing in a vacuum furnace. This integrally brazes the components together, embeds an electrical heating element in a spiral channel, and provides the surfaces with a protective nickel coating. In one embodiment, the forward end has an integral high speed steel insert and the remote end of the heating element extends into the forward end of the nozzle. In addition to providing the protective coating, carrying out the method with a single vacuum brazing step considerably reduces manufacturing costs.

REFERENCES:
patent: 4238671 (1980-12-01), Gellert
patent: 4344750 (1982-08-01), Gellert
patent: 4355460 (1982-10-01), Gellert
patent: 4386262 (1983-05-01), Gellert
patent: 4403405 (1983-09-01), Gellert
patent: 4446360 (1984-05-01), Gellert
patent: 4557685 (1985-12-01), Gellert
patent: 4583284 (1986-04-01), Gellert

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