Injection molding extrusion mixer

Details Injection molding extrusion mixer Injection molding extrusion mixer

1976-09-08

1978-03-07

Husar, Francis S.

Plastic article or earthenware shaping or treating: apparatus

With separate and distinct upstream agitating or kneading means

Within pressurizing chamber

425192R, 425557, 425586, 366 76, 366 77, B29F 302

Patent

active

040777561

ABSTRACT:
Mixer apparatus for use with injection molding, extrusion or mixing and compounding machines wherein a melt chamber is lined with a series of stacked Belleville spring washers to provide a series of axially narrow, annular extrusion passages between the washers. A quantity of thermoplastic material is supplied to the melt chamber at the inner diameter of the washers and is therein subjected to pressure to cause extrusion of the material through the passages. From the washers, the material is directed through axially extending slots about the washers to a mold cavity or forming die.

REFERENCES:
patent: 2813300 (1957-11-01), Hausman
patent: 3284854 (1966-11-01), Kutik
patent: 3508298 (1970-04-01), Seidl
patent: 3550912 (1970-12-01), Melnikov et al.
patent: 3609808 (1971-10-01), Jacobi et al.
patent: 3770249 (1973-11-01), Schmitt

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