Method and apparatus for consolidating a workpiece at elevated t

Details Method and apparatus for consolidating a workpiece at elevated t Method and apparatus for consolidating a workpiece at elevated t

1995-10-06

1998-10-13

Wu, David W.

Plastic article or earthenware shaping or treating: apparatus

Preform reshaping or resizing means: or vulcanizing means...

By fluid pressure actuated flexible diaphragm

425392, 4254051, 425DIG44, 264313, 264570, 264571, B29C 6714

Patent

active

058208941

ABSTRACT:
A consolidation apparatus includes a female mold having a first portion and a second portion, a movable caul plate within the first portion of the female mold, and a pressure bladder disposed between the caul plate and the second portion of the female mold. A pressurization line communicates between the interior of the pressure bladder and a gas source exterior to the female mold, and an evacuation line communicating between the unfilled space between the caul plate and the second portion, and a vacuum source exterior to the female mold. In using the apparatus, a workpiece is loaded into the first portion of the female mold between the caul plate and the first portion. The consolidation apparatus and the workpiece contained therein are heated, a pressure is applied to the pressurization line, and a vacuum is simultaneously applied to the evacuation line.

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