Roller die extruder and method of use

Details Roller die extruder and method of use Roller die extruder and method of use

1979-12-05

1981-11-10

Lowe, James B.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

264174, 264177R, 425168, 425224, 425374, 425376B, 425447, B29D 712

Patent

active

042997895

ABSTRACT:
In extrusion apparatus of the type having a generally cylindrical roller, a stationary die head surface confronting the roller and defining therewith an extrudate chamber, and means for rotating the roller to force material through the chamber to an extrudate shaping orifice defined by the roller and a downstream portion of the die head, a bearing pad is interposed between the roller and the die head. The roller is biased against the bearing pad so that the pad serves to space the roller from the die head to accurately control clearance between the die head and roller at the extrudate shaping orifice.

REFERENCES:
patent: 1844972 (1932-02-01), Parkhurst
patent: 2842796 (1958-07-01), Rhodes
patent: 2892212 (1959-06-01), Rhodes
patent: 3142091 (1964-07-01), Curtiss
patent: 3869240 (1975-03-01), Mackie et al.
patent: 3869304 (1975-03-01), Bogulslawski et al.
patent: 3871810 (1975-03-01), Geyer
patent: 3909079 (1975-09-01), Lauterbach
patent: 3956056 (1976-05-01), Bogulslawski
"Uniroyal Unveils One-Roll Roller Die for Extrudates", Rubber and Plastics News, Mar. 6, 1978, p. 7.

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