CPE casting film production technology is high

In order to prevent excessive "neck shrinkage" and edge rolling of CPE flow film plastic melt due to thermal expansion and cold contraction,

 air knife or electronic edge locking device is installed on both sides of the flow roll.Use compressed air or high pressure ion flow, acting on 

the plastic film, make it close to the surface of the roll.At the same time, in order to avoid the rotation of CPE film rolling roller, air will be

 brought into the film and the cooling roller, bubble, reduce the cooling effect and affect the forming quality of the film, a positive pressure 

air knife is set in the front of the film, but the air pressure chamber is set. The compressed air is blown to the extruded molten film by the

 positive pressure air knife, and the "pressure" is generated. The double cavity vacuumsuction device produces "suction" on the melt film

 when vacuuming. This pressure and suction will suck the air ensnaxed on the surface of the cooling roll, ensuring the close contact between

 the molten CPE flow film and the cooling roll, and improving the molding efficiency and quality of the plastic film.