PVC soft plastic, easy to bend. Soft PVC extruded sheets are made by adding plasticizers, stabilizers, etc. to PVC resin through extrusion molding. It is mainly used for the lining of anti-corrosion equipment such as acid and alkali resistance. It can also be used as general electrical insulation and sealing gasket materials. The operating temperature is -5 to +40℃. It can be used as a substitute for rubber sheets. It has a wide range of uses and is a new type of environmental protection. product. The following Shandong PVC soft board manufacturers introduce the production process of PVC soft board.
The quality of the material of the PVC soft board and the barrel and the residence time in the mold affect the residence time is too short, there is not enough foaming agent to decompose, the board density is too large, the residence time is too long, and the mechanical properties of the foam board are easily reduced. The screw speed should be based on the process of different crustal foaming methods. The use requirements of the equipment and the plate cooling and cutting time need to be considered. The screw speed and extrusion speed are set according to different plate thicknesses, generally not exceeding 4 m/min.
The production process of the factory produces PVC soft boards and changes in materials, extruders, mold changes, different materials, extruder specifications and spiral structures, and different specifications and shapes of profiles. The process adjustment methods are very different. Rigid PVC extrusion The complexity of the process itself determines the difficulty of skin foam formation.