Plastic article or earthenware shaping or treating: apparatus – With separate and distinct upstream agitating or kneading means – Within pressurizing chamber
Patent
1998-03-20
2000-08-08
Davis, Robert
Plastic article or earthenware shaping or treating: apparatus
With separate and distinct upstream agitating or kneading means
Within pressurizing chamber
425331, 425DIG230, B29B 900, B29C 4760
Patent
active
060992883
ABSTRACT:
A pellet-forming apparatus is provided for extruding high moisture materials in a low-pressure extrusion apparatus having an extruding cylinder and a cooperative extruding rotor. The rotor extends axially through the elongated cylinder and is formed with multi-tier extruding surfaces that are configured and positioned to be radially spaced with respect to the interior surface of the cylinder and form a pressure zone to effect radial displacement of the material through passages formed in the cylinder wall and be extruded exteriorly of the cylinder. The rotor preferably consists of a series of configured plates arranged along a common axis to form a combined auger-shaped extruding rotor. A feed conveyor comprising a helical flight auger is provided in preceding axial relationship to the extruding cylinder for feeding of material into the cylinder without substantial pressure buildup.
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International Application WO 93/06742 published Apr. 15, 1993, inventor Wenger, L.G.
Davis Robert
MP6, L.L.C.
Nguyen Thukhanh T.
Salazar John F.
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