Web thickness control

Details Web thickness control Web thickness control

1993-09-17

1995-06-13

Woo, Jay H.

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

264 406, 425143, 425466, B29C 4716

Patent

active

054236681

ABSTRACT:
An improved apparatus providing for uniformity of web thickness is disclosed. In one aspect, the apparatus includes a plurality of gap-controlling, thermal energy sources, and in heat-exchange communication with the thermal energy sources, an assembly for compensating for temperature variation proximate to the thermal energy sources and across the apparatus width. The thermal compensating assembly includes a heat exchange jacket, and in combination therewith, a heat-exchanging, working fluid that undergoes a phase change in performing its heat exchange function.

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