Analysis and solution of common problems in blowing film (4 (injection molding products)

4. The film has fog-like water pattern

Reason 1: Low extrusion temperature, poor plasticization of resin;

Reason 2: The moisture content of the resin is too high.

solution
① Adjust the temperature setting of the extruder, and appropriately increase the extrusion temperature.

② The resin raw materials are dried, and the water content of the resin is generally required not to exceed 0.3%.