Rotational screw for mixing

Details Rotational screw for mixing Rotational screw for mixing

1988-04-06

1989-07-11

Chiesa, Richard L.

Plastic article or earthenware shaping or treating: apparatus

With separate and distinct upstream agitating or kneading means

Within pressurizing chamber

366324, B29C 4760

Patent

active

048466590

ABSTRACT:
A rotational screw for mixing synthetic resins with various additives, comprising a plurality of helically arranged mixing recesses provided consecutively, at specified mixing positions, in the peripheral areas thereof and communicated transversely of the helical direction with one another so that the amount of delivered material is large and highly intimate mixing is effected. The improvement comprises a plurality of helically arranged recesses which are triangular in helical cross section, and are arranged to have their corresponding tips of adjacent recesses at 60.degree. angles from each other.

REFERENCES:
patent: 2680879 (1954-06-01), Schnuck et al.
patent: 3486192 (1969-12-01), LeRoy
patent: 3687423 (1972-08-01), Koch et al.
patent: 3788612 (1974-01-01), Dray
patent: 3788614 (1974-01-01), Gregory
patent: 3814779 (1974-06-01), Wiley
patent: 3826477 (1974-07-01), Kunogi et al.
patent: 3957256 (1976-05-01), Murakami
patent: 4107788 (1978-08-01), Anders
patent: 4639143 (1987-01-01), Frankland Jr.

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