The screen moves across the flow of plastic melt and a fresh screen enters as the spent filter screen exits; removing the impurities from the raw material. The belt screen changer is fitted between the end flange of the extruder and the die. A cassette holding a roll of screen filter is attached to the side of the belt screen changer block. The controlling box of belt screen changer is equipped with a pressure sensor, and a pressure warning device, when the pressure is raise to the preset , it will automatically alarm, at the same time, the screen is replaced automatically. And the cooling system begin to work , the impurity is cooled and moved out with the filter screen.

Widely used for:
1. Extruders (Plastic Extruder, Cast Film, gas pipe extruder, etc)
2. Plastic pipe production line
3. Pipe, PA, PET and PVC sheet extrusion lines
4. Pelletier, granulation, Non-woven, Plastic recycling and Monofilament machine

Type	Screen Belt W(mm)×L(m)	Heating power(kw)	Pressure (Mpa)	Output (kg/h)
DHW--70	76×10	2.5	≤40	≤200
DHW--100	107×10	3.5	≤40	≤500
DHW--120	130×10	5	≤35	≤800
DHW--150	160×10	7.5	≤35	≤1500
DHW--170	180×10	12.5	≤35	≤2000
DHW--200	210×10	14	≤35	≤3500