Extruder

Details Extruder Extruder

B - Operations, Transporting

30

B

B30B 11/22 (2006.01) B21C 23/00 (2006.01) B21C 29/00 (2006.01) B21C 33/00 (2006.01) B23Q 7/05 (2006.01)

Patent

CA 2116932

ABSTRACT OF THE DISCLOSURE 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.

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