1, film surface nebulee reason: color masterbatch packing, color masterbatch dispersion, extrusion screw too fast, screw extrusion temperature too high or too low, the nose temperature too high or too low. Solution: reduce the speed, appropriate adjustment screw cooling water temperature, adjust the head temperature. Reduce color masterbatch filler content, improve the color masterbatch of pigment dispersion.

2, bubble tube rupture reason: there is impurity in masterbatch, masterbatch were porosity, inorganic pigments coking masterbatch. Solution: to improve the filter fineness, strengthen the pigment in manufacturing filter, mixing, strengthen masterbatch when it is squeezed vacuum switch to organic pigments.

3, film flatness bad causes: color masterbatch contains packing more. Solution: reduce the dosage of filler in the color masterbatch.

4, film bag sealing is not good reason: wax in color masterbatch. Solution: to reduce the content of wax in color masterbatch.