Plastic article or earthenware shaping or treating: apparatus – With separate and distinct upstream agitating or kneading means – Plural means being diverse – or parallel and intermeshing or...
Patent
1984-11-07
1987-02-17
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
With separate and distinct upstream agitating or kneading means
Plural means being diverse, or parallel and intermeshing or...
264349, 366 83, 425208, B29B 720
Patent
active
046436618
ABSTRACT:
An extrusion device comprises feed means and extrusion means. The feed means comprises a feed hopper having a feed aperture formed therein, said feed aperture feeding material into a hollow barrel in which a single screw rotates. The single screw conveys the material to the extrusion device. The extrusion device comprises twin screws rotating in a further barrel. The two barrels are co-axial with one another and are in series with one another. The diameter of the single screw is at least twice the diameter of each of the twin screws.
REFERENCES:
patent: 2572063 (1951-10-01), Skipper
patent: 3371379 (1968-03-01), Reifenhauser
patent: 3947000 (1976-03-01), de Putter
patent: 4479048 (1984-10-01), Kinoshita
Fortenberry J.
Hermann Berstorff Maschinenbau GmbH
Woo Jay H.
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