Mold injection adapter for low viscosity polymers

Details Mold injection adapter for low viscosity polymers Mold injection adapter for low viscosity polymers

1974-12-30

1976-03-02

Bell, Jr., Houston S.

Fluent material handling, with receiver or receiver coacting mea

Diverse fluid containing pressure filling systems involving...

Filling with exhausting the receiver

141 82, 222146R, B65B 3106

Patent

active

039411699

ABSTRACT:
There is described herein a mold injection adapter for use with low viscosity polymers comprising a housing adapted to be urged into sealing relationship with the area around the mold inlet port and selective means in the housing for evacuating the mold cavity through the port and for injecting polymer into the port, as well as a fluid jacket for heating or cooling the polymer immediately prior to injection. The injecting means is disclosed as a pneumatically or hydraulically operated injection barrel containing a further pneumatically or hydraulically operated needle valve for controlling flow of polymer through the injection barrel and sealing the barrel during the evacuation step.

REFERENCES:
patent: 3380488 (1968-04-01), Herbst

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