This summary outlines the shredder’s role in extrusion production lines: it breaks large, irregular plastics (notably recycled waste) into uniform fragments via mechanical shearing, tearing, and extrusion, ensuring suitable feed for subsequent extrusion. Its workflow includes raw material pretreatment, shredding, screening, and connecting to extrusion. The shredder prevents extruder clogging/uneven feeding, accelerates melting by increasing material surface area, and is vital for recycled plastic extrusion.

In the plastics industry, mixers are core equipment for material pretreatment and modification. They achieve uniform mixing of resins, additives, and fillers through three stages—dispersive mixing, convective mixing, and heat-assisted mixing—by utilizing mechanical forces (shearing, extrusion, stirring) and thermal effects (frictional heat, external heating). Commonly used mixers are categorized into five types; their selection must be based on material properties, and the mixing effect directly impacts the performance, appearance, and processing stability of plastic products.

The hauler is the "speed and tension regulator" of the extruder production line. Through stable traction action and speed matching with the extruder, it "smoothly draws out" the extruded continuous products from the die and provides stable conveying power for subsequent processes such as cooling, shaping, and cutting. It is key equipment to ensure the quality of extruded products (dimensional accuracy, surface flatness).

This article expounds on the working principle and core technologies of winders in extruders. Its working principle revolves around winding continuously extruded products into neat rolls under specific tension, encompassing stages such as reception and guiding, tension control, winding formation, and linkage adaptation with extruders and tractors. The core technologies focus on four aspects: the tension control system maintains stable tension through sensors and PID algorithms; precision winding and traversing technology ensures neat arrangement of products; speed linkage and synchronization control realizes speed matching between devices; automation and adaptive design improves efficiency and accommodates diverse requirements. The technical optimization of the winder plays a decisive role in terms of the continuity, product quality, and efficiency of the extrusion production line.

This article focuses on winders for extruders. It first introduces common types of winders classified by the type of extruded products, including those suitable for films/sheets, pipes/profiles, wires/filaments, and special products, with explanations of their applicable products, features, and typical equipment respectively. Then, it elaborates on the linkage requirements between winders and extruders, covering aspects such as speed linkage, tension feedback, and roll diameter signals. Finally, it summarizes that winders are key equipment to ensure continuous production and product quality. Their design must be closely matched with the material, form, and production speed of extruded products, with the core lying in stable tension and neat winding, while improving the efficiency of the production line through automated functions.

1. Main motor Innomotics (Siemens Business)2. Gearbox : vertical integrated type3. ABB inverter ; Siemens /Schneider contactors /Relays4. Japan brand Omron/Fuji temperature controllers5. Stainless steel SU304 tank material6. Hauler AC motor with ABB Drive 7. Cutter: Siemens PLC control with Siemens