Apparatus for liquefying a thermoplastic high polymer material

Details Apparatus for liquefying a thermoplastic high polymer material Apparatus for liquefying a thermoplastic high polymer material

1988-11-01

1990-02-06

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

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

Temperature control

222 53, 222 54, 222 56, 264 401, 264 406, 425145, B29C 4792

Patent

active

048985279

ABSTRACT:
An apparatus for liquefying a thermoplastic, high-polymer material has a supply container for the thermoplastic material, heating means for heating the material in the supply container, a base part disposed beneath the supply container and containing a collecting trough for the liquefied thermoplastic material and control means regulating the heating means in dependence upon a comparison between a predetermined desired value and an actual value detected by a sensor. In order to be able to follow even rapid changes of the operating conditions the amount of liquefied thermoplastic material conveyed out of the collecting trough is detected as actual value and supplied to the control means; a suitable measure of this amount is in particular the speed of rotation of a pump serving as conveying means to convey the liquefied material from the collecting trough.

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patent: 4682710 (1987-06-01), Turner, Jr. et al.
patent: 4724983 (1988-02-01), Claassen

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