When the PVC/WPC wall panel production line is in operation, it is necessary to strictly control the screw speed, extrusion temperature, working pressure, etc. to complete the production. In addition, it is also closely related to the structure of the engine, die mouth and shaping die.

Practical experience has shown that the screw speed is positively correlated with the extrusion production volume of the sheet and inversely proportional to the relative density of the sheet.

The higher the screw speed, the faster the extrusion speed. The rapid temperature rise of the melt increases the difficulty of process control, but the foaming level is uniform and the surface quality of the product is good. Conversely, when the screw speed is too low and the extrusion speed is relatively slow, it will cause poor melting of the melt, reduce costs and improve efficiency. Additionally, foaming near the die lip will make the surface of the sheet rough.