Molding/extrusion apparatus with temperature and flow control

Plastic article or earthenware shaping or treating: apparatus – Control means responsive to or actuated by means sensing or... – Temperature control

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264 401, 264 406, 26432814, 425144, 425145, 425547, B29C 4578

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active

053603290

ABSTRACT:
Apparatus for molding permits a fluent molding material to be flowed into a mold cavity for shaping into a configuration defined by the mold walls. A master controller controls the transfer of heat with respect to the molding material, to control the temperature of the molding material in a predetermined way. A sensor measures the temperature of the molding material flowed into the cavity and produces feedback signals, which are compared to reference signals indicative of a desired molding material temperature. The apparatus generates a further control signal, which is applied to control the variables of the molding operation, including the temperature of the molding material and the flow rate.

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