The Function And Principle Of Extruder

The function and principle of extruder

The extruder is the core component of the sheet machine, and its main function is to heat and melt plastic particles to form a uniform melt, which is then extruded through the machine head to form the desired sheet. The working principle of an extruder can be summarized as follows:

Raw material transportation: Plastic particles enter the extruder barrel through the feed inlet. Heating and melting: In the barrel, plastic particles are heated to a molten state, forming a flowing melt. Mixing and plasticization: Through the rotation and shear action of the screw, the melt is fully mixed and plasticized to ensure its uniformity. Melt conveying: The melt is extruded through the machine head to form the desired sheet shape. The performance of the extruder directly affects the quality and production efficiency of the sheet. Therefore, it is known as the "heart" of the sheet machine.