Views: 52 Author: Site Editor Publish Time: 2021-06-03 Origin: Site
Nearly 20 years ago, the plastic extrusion machine as we know it is usually done manually. People are struggling to put the pellets into the hopper of the plastic extrusion machine into bags or boxes from a certain place. However, with the introduction of automation technology in the plastic processing process, people can be freed from heavy physical labor and dusty environments. The work that was originally done manually is now automatically done by conveying equipment and so on.
Plastic extruder can be divided into single-screw, twin-screw and multi-screw extruders according to the number of screws. At present, the single screw extruder is the most widely used, suitable for the extrusion processing of general materials. Due to the fact that the twin-screw extruder has less heat generated by friction, the shearing of the material is relatively uniform, the conveying capacity of the screw is large, the extrusion volume is relatively stable, the material stays in the barrel for a long time, and the mixing is uniform. SJSZ series conical twin-screw extruder has the characteristics of forced extrusion, high quality, wide adaptability, long life, low shear rate, difficult material decomposition, good mixing and plasticizing performance, direct powder molding, etc., and temperature is automatically controlled. Vacuum exhaust and other devices. It is suitable for the production of pipes, plates, special-shaped materials and other products.
The single-screw plastic extruder occupies an important position as a plasticizing granulating machine or a molding processing machine. In recent years, the single-screw extruder has made great progress. At present, the large-scale single-screw extruder for pelletizing produced in Germany has a screw diameter of 700mm and an output of 36t/h. The main symbol of the development of single-screw extruder lies in the development of its key part-screw.
In recent years, people have conducted a lot of theoretical and experimental research on screws, and there have been nearly a hundred types of screws, the common ones are separation type, shear type, barrier type, split type and wave type. From the perspective of single-screw development, although single-screw extruders have been relatively perfect in recent years, with the continuous development of polymer materials and plastic products, more characteristic new-type screws and special single-screw extruders will emerge.
In the plastic extrusion molding equipment, the plastic extrusion machine is usually called the main machine, and the subsequent equipment that is matched with the plastic extrusion machine is called the auxiliary machine. After more than 100 years of development, plastic extruder has derived from the original single-screw, twin-screw, multi-screw, and even non-screw models. The plastic extruder can be matched with various plastic molding auxiliary machines such as pipe, film, holding material, monofilament, flat wire, strapping, extruding net, sheet, profiled material, pelletizing, cable coating, etc., to form various plastic extrusion machines. Out of the molding production line, various plastic products are produced. Therefore, plastic extrusion molding machinery is one of the widely used models in the plastics processing industry no matter now or in the future.
Taizheng is the leading China plastic extrusion supplier, the machine is of good quality and long life. It cooperates with more than 100 well-known brands around the world and is trustworthy.