Multi-cavity injection molding apparatus for optical disk substr

Details Multi-cavity injection molding apparatus for optical disk substr Multi-cavity injection molding apparatus for optical disk substr

1991-12-27

1993-08-24

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

With coupling between charger and mold

264106, 264155, 264161, 2642972, 2643288, 425577, 425810, B29C 4538

Patent

active

052383938

ABSTRACT:
A multi-cavity injection molding apparatus capable of simultaneously molding a plurality of optical disk substrates with a simple construction. The injection molding apparatus is constituted of a mold unit having a plurality of cavities and an injection unit for supplying a molten resin to the mold unit. The injection unit is provided with a plurality of nozzles for injecting the molten resin into the cavities, respectively.

REFERENCES:
patent: 3568256 (1971-03-01), Johnson, Jr.
patent: 4121740 (1978-10-01), Gabrys
patent: 4917833 (1990-04-01), Cools
patent: 4971548 (1990-11-01), Asai
patent: 5069840 (1991-12-01), Arnott

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