Injection molding apparatus

Details Injection molding apparatus Injection molding apparatus

1998-10-29

2000-10-31

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

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

249 60, 26432812, B29C 4503

Patent

active

061393096

ABSTRACT:
An injection molding apparatus for molding a plastic article by fitting an upper mold and a lower mold by pressing and injecting a molten resin through a pin point gate employs a net groove formed at the upper mold and/or the lower mold, said net groove comprising fine grooves extending in a vertical and/or horizontal directions. A passage groove formed on the net groove of the upper and/or lower molds has a large diameter or width to facilitate the entrance of the molten resin. At least one pin point gate is formed on the passage groove to inject the molten resin into the mold. A frame groove surrounds the net groove in the upper and/or lower molds.

REFERENCES:
patent: 5423893 (1995-06-01), Kotaki

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