Multiple gate injection nozzle

Details Multiple gate injection nozzle Multiple gate injection nozzle

1992-08-31

1997-07-08

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

425570, 425572, B29C 4522

Patent

active

056458746

ABSTRACT:
A multiple gate injection nozzle is described in which individual insert heaters are utilized, each associated with a respective probe to allow different probe lengths without upsetting proper temperature conditions at each gate. A main heater is also used encircling the main body of the nozzle. Replaceable copper sealing rings expand to a greater extent than the steel main body to increase the sealing pressure during operation.

REFERENCES:
patent: 4033485 (1977-07-01), Kohler
patent: 4902219 (1990-02-01), Leverenz
patent: 5217730 (1993-06-01), Teng

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