Multiple cavity injection molding

Details Multiple cavity injection molding Multiple cavity injection molding

1992-10-26

1994-01-04

Heitbrink, Jill L.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Forming plural articles

2643288, 26432814, 425547, 425562, 425572, 425588, B29C 4532, B29C 4527

Patent

active

052757781

ABSTRACT:
An injection mold typically defines multiple cavities. A mold gate is provided which comprises a rotary spherical member having a sprue conduit extending transversely therethrough. Highly accurate sequential molding of multiple cavities can be achieved in this manner, as well as other advantages. Also, this arrangement permits a linear, straight sprue conduit which is free of any sharp turns.

REFERENCES:
patent: 4609138 (1986-09-01), Harrison
patent: 4687613 (1987-08-01), Tsutsumi
patent: 4971747 (1990-11-01), Sorensen
patent: 4973239 (1990-11-01), Herrmann et al.
patent: 4983117 (1991-01-01), von Buren et al.
patent: 5169655 (1992-12-01), von Holdt, Sr.

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