Plastic extruder, as the name suggests, is a device that processes plastic raw materials into desired shapes and sizes by extrusion. It is mainly composed of three parts: extrusion system, transmission system and heating and cooling system.
extrusion system
The extrusion system includes a screw, barrel, hopper and other parts. Its main task is to plasticize and melt the plastic raw materials and push them to the machine head through the rotation of the screw.
Transmission system
The transmission system is mainly composed of motors, reducers and bearings, and is responsible for providing the required power to the screw.
Heating and cooling system
The heating and cooling system controls the temperature of the barrel to ensure that the plastic raw materials are plasticized and melted at the appropriate temperature.
How does plastic extruder work?
The working principle of a plastic extruder can be simply summarized as the four steps of "feeding-plasticizing-extrusion-forming".
1. Adding materials: Add the plastic raw materials into the hopper and send them into the barrel through the rotation of the screw.
2. Plasticization: The heating element in the barrel plasticizes and melts the raw materials to form a flowable plastic melt.
3. Extrusion: The screw continues to rotate, pushing the melt to the machine head, and forming the required shape through the die of the machine head.
4. Forming: After cooling and shaping, the required product can be obtained.
Applications of plastic extruders
Plastic extruders are widely used in the production of plastic products, such as pipes, plates, wires, films, etc. In addition, it also plays an important role in wire and cable, packaging materials, construction and other fields.
Plastic Pipe production Machine
By replacing different molds, the plastic extruder can produce pipes of different specifications and materials, such as PVC pipes, PE pipes, etc. These pipes are widely used in water supply, drainage, gas transportation and other fields.
Plastic sheet production machine
During the sheet production process, the plastic extruder can extrude the melt into sheets through a flat die, which is widely used in construction, furniture, packaging and other industries.
Plastic profile and WPC profile production machine
profile production usually uses a small plastic extruder to extrude the melt into profiles through special molds, such as window and door profiles, decoration profiles.
Conclusion
Through the above introduction, I believe you have a deeper understanding of plastic extruders. With its efficient and flexible production characteristics, it plays a decisive role in the production of plastic products. Whether it is small objects in life or large-scale products in construction, industry and other fields, they are inseparable from the contribution of plastic extruders. I hope this popular science article can give you a clear understanding of plastic extruders and be helpful in your future study and work.
Yongte is professional manufacturer for plastic extruder machines located in Qingdao, China. Our main products cover diversified series such as plastic pipe production lines, plastic profile production lines, plastic plate production line equipment, and plastic recycling and granulation equipment. In addition, we provide one-stop WPC production lines and related technical services from wood and plastic raw materials to finished products, including wood powder mills, mixers, wpc granulators, wpc profile extrusion lines, wpc door production lines and wpc sheet extrusion lines. and other types of special equipment, as well as auxiliary machines required for surface treatment of wood-plastic products such as embossing machines, sanding machines, lamination machines, and engraving machines.
