Apparatus for producing, by extrusion, flat profiled articles of

Details Apparatus for producing, by extrusion, flat profiled articles of Apparatus for producing, by extrusion, flat profiled articles of

1985-03-19

1987-02-17

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Means feeding fluent stock from plural sources to common...

Extrusion shaping means

264171, 4251335, 425190, 425462, B29C 4706

Patent

active

046436596

ABSTRACT:
To extrude, for pneumatic tires, uncured tread strips composed of three different rubber or synthetic material mixtures, three extruders are used which feed to a common extruder head and are connected with the latter. The present invention utilizes the favorable flow conditions resulting from the known Y-arrangement of three extruders within the extruder head, while at the same time avoiding the previously unavoidable complex and expensive specialized construction of the extruder head. Inventively, the third extruder, which opposes the two first extruders in the withdrawal direction, is not screwed or clamped to the extruder head which is common to all three of the extruders. Rather, the third extruder is easily detachably connected via a direct metal-to-metal contact with the extruder head only by a frictional connection in a longitudinally movable arrangement.

REFERENCES:
patent: 2227263 (1940-12-01), Knowles
patent: 3981655 (1976-09-01), Horbach
patent: 4204496 (1980-05-01), Ikegami et al.
patent: 4280801 (1981-07-01), Wheeler, Jr. et al.
patent: 4358261 (1982-11-01), Ohki
patent: 4548568 (1985-10-01), Herbert et al.
patent: 4552521 (1985-11-01), Linnstaedter

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