Excessive temperature caused by plastic melt

After the plastic melt temperature is too high, its viscosity will gradually decline, good liquidity, need of clamping force per unit area will also along with the increase, mould clamping force or large local clearance is insufficient, flash will result.The causes of plastic melt the actual temperature rise is various, feed tube temperature setting is too high, melt metering is too large, the screw is too thick, cycle is too long, back pressure is too big, speed too fast, will lead to raise the temperature of plastic or directly led to the decrease of the viscosity.These parameters should be checked in time when the product appears on the edge.