Extrusion apparatus and method for extruding abrasive pastes

Details Extrusion apparatus and method for extruding abrasive pastes Extrusion apparatus and method for extruding abrasive pastes

1978-09-08

1980-07-15

Arnold, Donald J.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

249112, 264176R, 425 89, 425376R, 425376A, B28B 736

Patent

active

042128404

ABSTRACT:
This invention concerns an improved apparatus for extruding abrasive pastes, especially those which contain ground glass together with polymerizable material, and which comprises a conventional piston and cylinder extrusion apparatus in which the working surfaces are protected by a replaceable lining system consisting of a thin tubular liner and two discs substantially closing its ends and enclosing the paste to be extruded. In the preferred embodiment (FIG. 1) the lining system is made of polypropylene.

REFERENCES:
patent: 3380121 (1968-04-01), Chittenden et al.
patent: 3442481 (1969-05-01), Di Stasio
patent: 3479704 (1969-11-01), Reed
patent: 4003545 (1977-01-01), Tanaka

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