The change of temperatures, even 1C, affect the
viscosity of the material. Therefore, temperature and
heat control of the extruder is so important. From the
extruder manufactured and the test made with PD
derivative control system after 50C, however, it was
concluded that the control of the heat of resistance
should be PID control system due to necessity of
sensitive heat control of polymer which is affected
with 1C temperature change. In the experiments,
type J heat element used, but the results indicated
that PT 100 would be more beneficial.
C