MELT TEMPERATURE FIELD MEASUREMENT IN SINGLE SCREW EXTRUSION: INFLUENCE OF MELT PRESSURE AND DIE GEOMETRY

摘要

Melt temperature fields have been measured in single screw extrusion using novel thermocouple grid, ultrasound and infra-red sensor techniques. The effect of die geometry on melt temperature profile has been investigated using simple slit and rod dies on a single screw extruder. Die geometry of the simple dies studied here was found to have a minor effect on melt temperature field in regions near to the die wall. Die head pressure had a more significant effect on melt temperature distribution.