Injection molding apparatus having melt transfer and dividing bu

Details Injection molding apparatus having melt transfer and dividing bu Injection molding apparatus having melt transfer and dividing bu

1997-11-24

2000-02-29

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

Means feeding fluent stock from plural sources to common...

425562, B29C 4516

Patent

active

060301988

ABSTRACT:
Multi-layer injection molding apparatus having integral melt transfer and dividing bushings extending from a rear melt distribution manifold through openings in a front melt distribution manifold to aligned heated nozzles. Each bushing has two or three integral layers which are drilled and machined to have melt holes through them connected to melt conduits between them which divides one melt flowing from the rear melt distribution manifold to several bores extending to an annular melt channel in the aligned heated nozzle. In some embodiments, the bushing can also divide a second melt flowing from the front melt distribution manifold to another annular channel in the aligned heated nozzle.

REFERENCES:
patent: 4712990 (1987-12-01), Kudert et al.
patent: 4932858 (1990-06-01), Gellert
patent: 5094603 (1992-03-01), Gellert
patent: 5223275 (1993-06-01), Gellert
patent: 5374178 (1994-12-01), Nakayama
patent: 5795600 (1998-08-01), Rozema

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