Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – With accumulator – trap chamber – or serially arranged valves...
Patent
1997-01-15
1998-09-08
Heitbrink, Tim
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
With accumulator, trap chamber, or serially arranged valves...
26432819, 425558, 425562, B29C 4554
Patent
active
058042300
ABSTRACT:
An injection molding machine for thermoplastic resin consisting of an accumulator in which a plunger is slidably provided and an injection mold, the sprue of which connects with the nozzle of said accumulator, wherein said plunger consists of a cylinder and a screw rotatably arranged in said cylinder, the tip of said screw protrudes from the front end of said cylinder and the maximum diameter of said tip is larger than the diameter of said screw, and the ratio of the effective volume of said plunger to the effective volume of said accumulator is in the range between 1:4 to 1:10 is provided in the present invention. By using said injection molding machine a large size product can be molded at a low injection pressure.
REFERENCES:
patent: 4557683 (1985-12-01), Meeker et al.
patent: 5246660 (1993-09-01), Tsutsumi
Hasegawa Tadashi
Kushida Shigemi
Nakamura Shin-ichi
Tabata Yoshimitsu
Aronkasei Co., Ltd.
Dowden Donald S.
Heitbrink Tim
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