The filter of this series of net changer is made up of a filter mesh belt of 10 meters or 20 meters, heating, cooling series and electric control system. No external power is required, and the network is automatically controlled by the pressure activated drive device. There is no fluctuation in material flow and no deformation of the product in the process of changing the net. Suitable for: PP, PE, ABS, PS, PMMA and other plastic melts, widely used in all kinds of thin film, sheet, sheet, high q