Air ejection of molded containers

Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface

Patent

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Details

B29C 700

Patent

active

044380658

ABSTRACT:
There is provided an improvement in an injection molding apparatus for a container, where the apparatus includes a core defining the interior of the container and first means within the core for initiating ejection of a molded container from the core. The improvement consists of second means adjacent the rim of the molded container for blowing a gaseous material toward the container rim, thereby completing ejection by urging the container away from the core.

REFERENCES:
patent: 4164523 (1979-08-01), Hanning
patent: 4375948 (1983-03-01), von Holdt

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