Characteristics of plastic granulator

After the plastic is added to the hopper, the hopper smoothly falls on the screw and is bitten by the screw thread. The rotation of the screw is forced to the direction of the machine head by the thread, forming a mechanical conveying process. When the plastic runs from the feed port to the machine head, due to the gradual decrease of the screw thread depth, and also due to the elongation of the filter screen, the manifold and the machine head, a high pressure is formed in the plastic plasticizing process, and the material The pressure is very dense, which improves its heat transfer conductivity, helps the plastic melt quickly, and gradually increases the pressure so that the gas originally present between the pellets is discharged from the exhaust hole.

While the pressure is rising, the plastic exterior is heated by the outside. During the compression, shearing and stirring movement of the inserted plastic itself, the internal frictional force also generates heat. Under the combined action of external force and internal force, the plastic temperature gradually increases. Its physical state has also undergone changes in the glass state-hyperelastic state-viscous flow state.

Welcome to see following link in details：

https://www.rhongmachines.com/granulating-machinery/