The process of cast film production is the melting and plasticization of resin through extruder. Extrude from the nose through slit die head, Keep the melt pressed against the cooling roller, and then after cut and  rolled, coiling.There are some factors affected production of Cast film:

1. Crystallization points in cast film production,

The problem of plasticizing can be improved by increasing the number of filter layer and the mesh of the screen.

2. After the machine is turned on, the crystal spots are easily generated, Production of different types of flow film conversion,The problem of easy to generate crystal points can be solved by using automatic not-stop Screen changer

3. resin has a foreign body mixed with high water content,

The use of automatic screen changer layer filtration can improve the cleanliness of raw materials.

And through the use of automatic non-stop screen changer can improve the production rate of cast film, high yield, low production costs, while improving the transparency of the film, gloss, uniform thickness and so excellent.