Extrusion molding apparatus for ceramic molded product

Details Extrusion molding apparatus for ceramic molded product Extrusion molding apparatus for ceramic molded product

2006-09-05

2006-09-05

Davis, Robert (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

With separate and distinct upstream agitating or kneading means

Within pressurizing chamber

C425S209000, C425S380000, C425S202000, C425S376100, C264S630000, C264S632000, C366S125000, C366S083000, C366S079000, C366S088000, C366S089000, C366S090000

Reexamination Certificate

active

07101165

ABSTRACT:
An extrusion molding apparatus comprises a shaping die for producing a ceramic molded product, and a screw extruder having built therein an extruding screw (40) for mixing while leading a ceramic material forward. The extruding screw (40) includes a pressing screw portion (410) having a first lead (411) and a dispersing screw portion (420) having a second lead (421) adjacent to a forward end (412) of the pressing screw portion (410). The second lead (421) is formed in such a manner that the rear ends of all the second lead surfaces (426) at the rear end (422) of the dispersing screw portion (420) and the forward end of the first lead surface (416) at the forward end (412) of the pressing screw portion (410) are displaced from each other.

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