Insulator for thermoplastic molding nozzle assembly

Details Insulator for thermoplastic molding nozzle assembly Insulator for thermoplastic molding nozzle assembly

1994-11-22

1996-10-29

Beck, Shrive

Plastic article or earthenware shaping or treating: apparatus

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

With means to heat or cool

425556, 425566, 427421, 427422, 427404, 4274197, B29B 1106, B05D 700

Patent

active

055694756

ABSTRACT:
In a thermal plastic molding device, a thermal insulator is provided between the nozzle assembly and the surrounding plates. Preferably, the insulator is a ceramic material, such as zirconia oxide, which is sprayed on in a thin coating, preferably in the range of 0.007-0.012 inches. Alternatively, other nonmetallic coatings can be used, or the insulator can be provided as a ring around the nozzle assembly instead of as a coating. A coating can be applied either to the plate or to the nozzle assembly. A protective coating, preferably a metal, is sprayed or plated over the ceramic insulator.

REFERENCES:
patent: 4222733 (1980-10-01), Gellert et al.
patent: 4268241 (1981-01-01), Rees et al.
patent: 4635851 (1987-01-01), Zecman
patent: 4642043 (1987-01-01), Schwarzkopf
patent: 4648833 (1987-03-01), Yamada
patent: 4894197 (1990-01-01), Tsutsumi
patent: 5046942 (1991-09-01), Gellert
patent: 5061174 (1991-10-01), Gellert

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