Method and apparatus for injection molding using a movable sprue

Details Method and apparatus for injection molding using a movable sprue Method and apparatus for injection molding using a movable sprue

1989-02-24

1991-04-30

Heitbrink, Jill L.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Forming plural articles

26432811, 425572, 425574, 425588, B29C 4512

Patent

active

050116460

ABSTRACT:
A method and apparatus for injection molding thermoplastic material including a stack mold and an injection unit with a movable sprue bar communicating with the runner system. The sprue bar is releasably engaged with the runner system by relative movement in a direction perpendicular to the horizontal central axis of the stack mold.

REFERENCES:
patent: 4212626 (1980-07-01), Gellert
patent: 4539171 (1985-09-01), Sorensen
patent: 4586887 (1986-05-01), Gellert

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