How does the design of a screw barrel affect the extrusion process- Zhoushan Jiading Plastic Machinery Co., Ltd.

The screw barrel is an essential component of an extruder machine, and its design plays a crucial role in determining the quality and efficiency of the extrusion process. The design of the screw barrel affects the extrusion process in the following ways:

1.Melting and Mixing: The screw barrel's design determines how effectively the raw materials are melted and mixed. The geometry of the screw and barrel can be adjusted to create shear forces and mixing zones, which facilitate uniform melting and mixing of the raw materials.

2.Pressure and Flow: The design of the screw barrel also affects the pressure and flow of the molten plastic through the extruder. The screw's pitch, flight depth, and number of flights all impact the pressure and flow of the material.

3.Residence Time: The screw barrel's design also determines the residence time of the material inside the extruder. A shorter residence time may result in insufficient melting or mixing, while a longer residence time may cause the material to overheat and degrade.

4.Wear and Tear: The design of the screw barrel also affects its durability and resistance to wear and tear. The material and surface finish of the screw and barrel can be optimized to minimize wear and tear, which helps to maintain consistent extrusion quality over time.

5.Output and Quality: Ultimately, the design of the screw barrel affects the extruder's output and the quality of the extruded product. By optimizing the screw barrel's design, manufacturers can achieve higher production rates and produce products with more consistent quality characteristics.

Parallel cylindrical screws for PE PP sheet product

Parallel cylindrical screws for PE PP sheet product

Twin screw and barrel type: CINCINNATI, BATTENFELD, KRAUSSMAFFEI, BAUSANO, MAPLAN and AMUT model spares.

The screw of the series consists mainly of two parallel cylindrical screws, which rotate to the opposite direction. Parallel double screw rotational speed is low, less heat, shear stability of the materials in the barrel, uniform, screw of material conveying ability is strong, have good exhaust effect at the same time, is conducive to the stability of product quality.

The main applications: Includes PVC pipe & profile extrude, PP/PE sheet product.