Extruder temperature controller

Details Extruder temperature controller Extruder temperature controller

1979-06-15

1981-04-21

Davis, Albert W.

Heat exchange

With alarm, indicator, signal, register, recorder, test or...

Remotely controlled inspection means

165 30, 236 78B, 264 406, 366145, 366146, 425144, F28F 2702

Patent

active

042627370

ABSTRACT:
A plastic extruder system having a barrel and a shell with heat exchange elements surrounding the barrel is disclosed. Two thermocouples are provided, one for sensing the temperature of the inner surface of the barrel and the other for sensing the temperature of the shell. A system controller, into which a desired barrel setpoint temperature can be set and stored, receives and stores the independent temperature signals from the thermocouples and controls the heat exchange elements to automatically maintain the temperature of the extruder barrel close to the desired barrel setpoint temperature.

REFERENCES:
patent: 2508988 (1950-05-01), Bradley
patent: 3751014 (1973-08-01), Waterloo
patent: 3866669 (1975-02-01), Gardiner
patent: 4072185 (1978-02-01), Nelson
patent: 4197070 (1980-04-01), Koschmann

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