This article highlights critical components beyond screws and barrels when selecting a plastic extruder. Key factors include screw speed and design, barrel structure and temperature control, gearbox and motor specifications, vibration reduction, and instrumentation. Modern high-speed, high-efficiency extruders optimize screw rotation, torque, and barrel heating to achieve higher output, better plasticizing quality, and energy savings. Advanced control systems and precise monitoring enhance process stability, ensuring efficient and reliable extrusion for various plastic materials.

This article introduces four essential screw-cleaning methods used in modified plastic production, especially for twin-screw extruders. It explains the working principles, operating procedures, advantages, and limitations of resin purging, mechanical disassembly cleaning, flame cleaning, and water-based hydrodynamic cleaning. By comparing their effectiveness, risks, and application scenarios, the article helps manufacturers choose the most suitable method for different materials and contamination levels. It also highlights the importance of proper operation, regular maintenance, and standardized cleaning processes to improve product quality, reduce defects, and extend extruder service life.

This article explores the blending modification of TPU and PVC to improve material performance and reduce costs. PVC/TPU blends show excellent oil resistance and enhanced flame retardancy, although higher TPU content can reduce solvent resistance. Adding chlorinated polyethylene (CPE) as a third component further improves tear strength, thermal stability, and processability while helping maintain TPU’s flexibility at low temperatures. The blending ratio significantly affects mechanical and shape memory properties, with ratios like TPU/PVC 90/10 offering optimal performance. Combining TPU, PVC, and copolyester (COP) can also produce melt-processable rubber that combines toughness, cost efficiency, and low-temperature flexibility.

The extrusion machines in the domestic plastic industry are roughly divided into two categories: single screw extruder and twin screw extruder. Because these two types of equipment have their own characteristics, they are widely used in the plastic industry.