Apparatus for adjusting die lip gap

Details Apparatus for adjusting die lip gap Apparatus for adjusting die lip gap

1992-03-26

1993-05-04

Simmons, David A.

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

Control means responsive to product weight or dimension

264 401, 425143, 425466, B29C 4722

Patent

active

052080471

ABSTRACT:
The present invention provides an extrusion apparatus having an improved mechanism for thermally-controlled, lip gap adjustment. The apparatus includes a flow path for a gaseous cooling medium, in which flow path a plurality of temperature-responsive, lip gap adjustment members are disposed. In contact with each such adjustment member is a heating element.

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patent: 4507073 (1985-03-01), Shelton
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patent: 4753587 (1988-06-01), Djordjevic et al.
patent: 4781562 (1988-11-01), Sano et al.
patent: 4854844 (1989-08-01), Carlsen
patent: 5051082 (1991-09-01), Hattori et al.

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