EN 
简体中文In thermoplastic extrusion, the material is first softened by heating in order to be shaped. This process is performed by an extruder or extruder. This thermal softening has different names, such as "thermal softening", "plasticizing" or "plasticizing". Most extruders are single screw barrels. The screw is the power that pushes the material to and through the mold. The shape is given by the die and/or post-extrusion molding, and then the product is shaped by cooling while maintaining its shape. The equipment used to perform this process is called post-extrusion equipment, and the entire system is called an extrusion line.
The single-screw barrel is a process used to make products by forcing materials through a mold or orifice to form a shape, or to use an extruder to produce semi-finished or finished products. Due to the importance of thermoplastic products in the extrusion process, this article focuses on the extrusion of thermoplastic products. There is no doubt that thermoplastics are the largest category of extruded plastic materials; almost 65% of plastics pass through the extruder.
For a single-screw extruder, the molten polymer flows out of the vent or vacuum port because the second stage does not pump as much material as the material delivered from the first stage to the second stage. This is caused by the wrong temperature profile or excessive back pressure from the screen group or mold. This assumes that the screw is a two-stage screw and the decompression zone is located in the correct position of the barrel.
No.8#,1st Branch, Lingang 2nd road, Shuangqiao Industry Zone, Dinghai Zhoushan, Zhejiang, China
+86-580-8058728
+86-580-8058708
