Apparatus for forming parisons

Details Apparatus for forming parisons Apparatus for forming parisons

1982-10-13

1983-11-22

Pavelko, Thomas P.

Plastic article or earthenware shaping or treating: apparatus

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

With means to heat or cool

425549, 425566, 425568, 425569, B27F 103

Patent

active

044166087

ABSTRACT:
An injection nozzle for use in an injection molding apparatus including a generally annular base portion which supports a generally cylindrical hollow side wall portion. The hollow side wall portion terminates at its upper end portion in an inwardly beveled heat transfer control portion. The beveled heat transfer control portion terminates in an angled mating portion which is of complementary angle to the angled mating surface of an injection nozzle accepting recess in the injection mold portion of the apparatus. The injection nozzle structure provides for controlled heat transfer control from the sprue portion of an injection molded parison to prevent crystallization in the sprue portion of the parison.

REFERENCES:
patent: 2814831 (1957-12-01), McKee
patent: 3559245 (1971-02-01), Ryan
patent: 4212625 (1980-07-01), Shutt

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