1. The causes of the misty sheet are as follows: the color masterbatch is unevenly dispersed in the sheet, the processing temperature is low, and the resin temperature is too high.Solution: increase the temperature of the barrel, increase the temperature of the die lip, reduce the temperature of the barrel, reduce the temperature of the die lip, and improve the dispersion of the color masterbatch.

2. The causes of longitudinal stripe of sheet: impurity in raw material or color masterbatch, impurity in die lip.Solution: strengthen filtration.

3. Causes of bubbles in sheet: moisture in raw material or color masterbatch, too high processing temperature.Solution: reduce the processing temperature, raw materials and color masterbatch drying.