Automatic control for an extruder

Details Automatic control for an extruder Automatic control for an extruder

1987-11-09

1988-08-30

Hoag, Willard

Plastic article or earthenware shaping or treating: apparatus

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

Temperature control

425425, 425149, 425308, 425378R, 425DIG230, 4253781, B29C 4778, B29C 4792

Patent

active

047673010

ABSTRACT:
An automatic control for an extruder has a temperature sensor which monitors the exit temperature of the extrudate and several pressure transducers which monitor the pressure within the extruder to control the cooking of the mash inside the extruder to ensure production of high quality extrudate. The controller monitors and controls the temperature and moisture content of the mash in the extruder by controlling the input of various ingredients and also the cooling or heating of the mash near the exit of the extruder through a heat exchanger.

REFERENCES:
patent: 3723035 (1973-03-01), Franke
patent: 3932736 (1976-01-01), Zarrow et al.
patent: 4120630 (1978-10-01), Laspisa et al.
patent: 4311446 (1982-01-01), Hold et al.
patent: 4550002 (1985-10-01), Uhland et al.
patent: 4721448 (1988-01-01), Irish et al.
patent: 4721589 (1988-01-01), Harris

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