Plastic article or earthenware shaping or treating: apparatus – With separate and distinct upstream agitating or kneading means – Agitator or kneader comprises means rotating about a...
Patent
1978-10-16
1979-10-16
Schulz, William E.
Plastic article or earthenware shaping or treating: apparatus
With separate and distinct upstream agitating or kneading means
Agitator or kneader comprises means rotating about a...
264176R, 366 90, 366 81, 425208, B29F 302
Patent
active
041711963
ABSTRACT:
An improved screw-type extruder intended to increase the output obtainable from a machine of certain dimensions while maintaining a satisfactory quality of the material extruded. This result is obtained by providing in the homogenization zone a thread crossed by a multitude of narrow passages, and in the feed zone means for overfeeding the plasticizing zone. These overfeeding means may, for example, consist in providing in this zone a cylinder grooved longitudinally or spirally or a double-screw section producing a forced pushing of the material toward the plasticizing zone.
REFERENCES:
patent: 3771774 (1973-12-01), Hook
patent: 4085461 (1978-04-01), Maillefer
patent: 4092015 (1978-05-01), Koch
Maillefer S.A.
Schulz William E.
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