Injection molding apparatus

Details Injection molding apparatus Injection molding apparatus

1994-04-08

1996-10-08

Nguyen, Khanh P.

Plastic article or earthenware shaping or treating: apparatus

With separate and distinct upstream agitating or kneading means

Within pressurizing chamber

4253781, 4253782, 425562, B29B 742, B29B 782

Patent

active

055629318

ABSTRACT:
An injection molding apparatus has a plasticizing space formed in a substantial cone or disk shape between a heating cylinder and a screw, into which molding resin is introduced. The molding resin in the plasticizing space can be maintained in its uniformly plasticized state by continuously rotating the screw during an injection molding operation, thus increasing the efficiency of injection molding. The heating cylinder and screw can readily be assembled because the heating surface of the heating cylinder and the plasticizing surface of the screw are formed in substantial cone or disk shapes.

REFERENCES:
patent: 3355764 (1967-12-01), Moyer
patent: 3405210 (1968-10-01), Heider
patent: 5387386 (1995-02-01), Kirjavainen

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