4 working positions screen changer

4 working positions screen changer has double piston and 4 screen cavities, and can keep continuous operation, so it also called double-piston extruder continuous screen changer with 4 screen cavities.

4 working positions screen changer applications:
Blown film and cast film (Bubble pack, Medical, Food Wrap)
Sheet (Foam, Strapping, plastic cardboard)
Coating (Hot melt adhesive)
Pipe (Corrugated, Gas Pipe) and profile
Compounding (Master batch, filler)
Wire and cable extrusion
Tubing (Medical, Industrial, Irrigation)
Fibers (Monofilament)
Blow molding
Pelletizing (strands and underwater)
Recycling of most polymers

Each screen bearing piston is equipped with 2 screen cavities, and these extrusion screen changers offer a large filtration area. It is used for processes requiring a large filtration area and high output rate. 4 screen cavities guarantee constant polymer filtration. This type of screen changer is designed with online wash device, and filter cleaning rate up to 80%, and it can be reused over 200 times.