The surface finishing of extruded strands is typically affected by the die pressure and temperature. The die pressure is affected by flow rate, temperature of melt and screw speed. Die swell, which is one of the extrusion defects, occurs at the die edge when sudden pressure release occurs due to the difference in inner and outer die dimension. How did changes in die temperature and screw speed affect it?
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The surface finishing of extruded strands is typically affected by the die pressure and temperature. The...