Barrel and Screw

Pre World is barrel and screw manufacturer and supplier in China who can wholesale barrel and screw. Working principle: The screw rotates in the barrel driven by the power device. Due to the screw thread structure, the space between the screw and the barrel is constantly changing. When the PVC material enters the screw barrel, as the screw rotates, the material is continuously pushed forward and is sheared, compressed and mixed by the screw. In this process, the heating device outside the barrel heats the PVC material to make it molten for easy processing; and the cooling device cools the barrel when necessary to control the temperature of the material and prevent overheating or overcooling from affecting the processing and product quality.