Plastic article or earthenware shaping or treating: apparatus – Stock pressurizing means operably associated with downstream... – Including additional rotating means downstream of the...
Patent
1994-03-03
1995-11-07
Nguyen, Khanh P.
Plastic article or earthenware shaping or treating: apparatus
Stock pressurizing means operably associated with downstream...
Including additional rotating means downstream of the...
4253824, 72262, 72269, B21C 2904
Patent
active
054643406
ABSTRACT:
A core body (60) is disposed in a feed passage (40) in rear of an extrusion die (5), with the passage being provided to transport an extrusile material. One or more annular passageways (63) are formed between the outer periphery of the core body and the inner periphery of the feed passage, so that helical edges (50a, 55a) protrude into the annular passageways. As the helical edges (50a, 55a) are driven to rotate, a strong thrust is applied to the extrusile material (M) within the feed passage (40) towards the extrusion die (5), so that the extrusion pressure is raised to improve the extrudability of various raw materials.
REFERENCES:
patent: 4053274 (1977-10-01), Lemelson
patent: 4832889 (1989-05-01), Johnson
patent: 5052470 (1991-10-01), Bruxmann
patent: 5167138 (1992-12-01), Sinha et al.
Nguyen Khanh P.
Yugen Kaisha Yano Engineering
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