The extruder adopts the gradient screw design, which is specially customized for the heat sensitive material. The plasticizing is not easy to be affected by the shearing. The temperature of the roller is adjustable, and the surface gloss is high. The machine is easy to operate and easy to adjust. The thickness of the sheet is positioned by a dial gauge, and the cutting is adopted. Automatic meter cutting device, the winding machine adopts tension design, winding and leveling, and automation makes production more convenient and efficient.