Some knowledge of the extruder, extruder screw thread element manufacturers tell you

Time:2022-03-21

Some knowledge of the extruder, extruder screw thread element manufacturers tell you

     Extruder screw thread elementThe manufacturer thinksPlastic processing technology comprehensive report, with the progress of the polymer processing industry, twin-screw extruder as one of the main processing equipment of polymer, with its excellent processing performance has been rapidly developed and widely used.

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  Extruder screw thread elementThe manufacturer thinksThe co-rotating twin-screw extruder is a very important equipment in plastic machinery. Because of its excellent processing performance and strong blending performance, its application range is more and more extensive. The overall structure of the twin-screw extruder is similar to that of the single-screw extruder, and its components are the main machine, the head and the auxiliary machine. The difference between the two is mainly on the host, which is what we call a twin-screw extruder. The number of screws of the co-rotating twin-screw extruder is different from that of the single-screw extruder. Based on this, the screw can be combined in various forms, so the co-rotating twin-screw extruder has a wide range of applications and is suitable for processing various materials. When filling modification, the performance of single screw extruder in mixing and dispersion is not satisfactory, especially in the processing of powdery materials, the same twin screw extruder dominates. The material of the twin-screw extruder is added by the feeding device, and then melted by the action of the two screws in the extrusion system, and then transported to the head position, and extruded through the mold. In this process, the combination of screws is particularly critical. Different screw combinations have different meshing modes and rotation directions.

  Extruder screw thread elementThe manufacturer thinksThe screw of the twin-screw extruder adopts a building block structure design, which optimizes its production and use performance, has strong adaptability, and can easily process various materials. It has the following characteristics:

  1.The speed direction of the co-rotating twin-screw extruder in the meshing zone is opposite, and the material advances in shape. Due to the change of material speed and other factors, the material mixing effect is very good.

2. Because the speed of the meshing zone is opposite, the shear force is large, and the homogenization efficiency is high, the material cannot be attached to the screw for a long time, and it has self-cleaning properties.

  3.The extruded product is very uniform and accurate in size.

4. Features: low conveying characteristics, low pressure capacity, can not be used for direct extrusion of large products, more for plasticizing modification.

  Extruder screw thread elementThe manufacturer thinksMeshing co-rotating twin-screw extruder is the main twin-screw extruder in China at present, and its unique performance is used in various fields of plastic modification industry. Many practices have also confirmed that the co-rotating twin-screw extruder is an ideal equipment for plastic modification and processing. The co-rotating intermeshing twin-screw extruder is widely used in the physical and chemical modification of matrix resin, such as filling, reinforcement, toughening, reactive extrusion, etc.

  Extruder screw thread elementThe manufacturer thinksThe extrusion system of the co-rotating twin-screw extruder is its core component. The extrusion system is mainly composed of screw and barrel, so the design of the extrusion system of the co-rotating twin-screw extruder is essentially the design of screw and barrel. ExtruderThe "heart" screw, its composition and arrangement are not only related to the productivity of the extruder, but also related to the plasticizing effect of the material and the performance and quality of the product. It is the core component of the extruder.


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