The hollow plate setting plate is suitable for the production of the hollow plate, and the function is to maintain the shape of the hollow plate in the extrusion mould and to promote the cooling and shaping, including the upper fixing plate and the lower fixing plate, and the working surface of the shaping plate is distributed with the connection negative pressure. The vacuum chamber of the source is provided with a cooling water pipe in the solid body of the shaping plate.
The production of PVC profiles by extrusion moulding is the main production mode of PVC profiles. The production process is as follows: the extruder melts and plasticizes the PVC material, and then the molten material is formed into the desired Pvc profile in the slit mould, and passes through the setting table. Cooling and shaping, traction and cutting, and then sent to the hopper stacking package. In the PVC production line, the main function of the setting table is to provide cooling water and vacuum to the profile that needs to be shaped.
Usually, different types of styling methods are used depending on the type, shape, precision, and moulding speed of the profile product, and sometimes a combination of several different sizing methods is used according to actual needs. Commonly used shaping methods for extrusion moulding are: (1) multi-plate type setting; (2) sliding setting; (3) dry vacuum setting; (4) wet vacuum setting; (5) vacuum sliding setting; (6) dry-wet mixing Vacuum setting. In order to meet the requirements of high-speed, high-efficiency and high-quality extrusion production, extrusion and setting are generally carried out in three forms: dry vacuum setting, wet vacuum setting, and dry-wet mixing vacuum setting.