Press for forming an article of composite material comprising re

Details Press for forming an article of composite material comprising re Press for forming an article of composite material comprising re

1993-08-19

1995-01-03

Mackey, James P.

Plastic article or earthenware shaping or treating: apparatus

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

Molding pressure control means responsive to pressure at...

425384, 425389, 425394, B29C 5128, B29C 5146

Patent

active

053781341

ABSTRACT:
A press has a fixed lower platen, and an upper platen which is movable vertically by means of an actuator. A former corresponding to the article which is to be obtained is placed on the lower platen via a thermal insulation member, the former including channels for circulation of a heat exchange fluid. The material to be formed is placed on the former. The upper platen carries an assembly which has a resilient membrane, the periphery of which is sandwiched between a lower frame and a cover connected to a source of fluid under pressure, sealing between said membrane and the lid being ensured by the clamping pressure between these two parts which results partly from the force exerted on the moving platen and partly from the pressure of the fluid.

REFERENCES:
patent: 4185069 (1980-01-01), Smith et al.
patent: 4447201 (1984-05-01), Knudsen
patent: 4576776 (1986-03-01), Anderson
patent: 4608220 (1986-08-01), Caldwell et al.
patent: 4752204 (1988-06-01), Kataoka
patent: 4943070 (1990-07-01), Lang

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