The screw length of a plastic extruder is usually proportional to the diameter of the screw. When manufacturing plastic products, we determine the design of the screw of the plastic extruder according to the material of the plastic and the type of product produced. The use of plastic extruders in the extrusion of plastics is usually the production of pellets or the extrusion of products. The use of the equipment is different, so the design of the plastic extruder is not the same at the time of production. Our common PVC plastic extruder has a screw length to diameter ratio of 1:25, but this is also based on the formulation of the plastic. Some raw materials are weak in plasticizing during production. We must screw the extruder The length of the barrel screw is increased to increase the plasticizing time of the raw material in the barrel, so that the normal extrusion of the product shape can be ensured. Plastic extruders used in plastic extruders between different types of plastics sometimes have different screw length to diameter ratios. For example, thermoplastic elastomer products are used in granulation or in the extrusion process of finished products. The plastic extruder has a longer aspect ratio than the average plastic extruder. Because the plasticizing performance of this raw material is inferior to the plasticizing property of PVC material, we need to lengthen the plasticizing section design during the extrusion production to meet the time of compression and plasticization of the raw material in the screw barrel. Some people will say that we can directly increase the temperature of each temperature control section on the extruder barrel, so that it can accelerate the plasticization of raw materials. This is not the case. Each plastic has a suitable extrusion temperature. The properties of the plastic in the molten state change with temperature. We must extrude plastic products in a constant temperature range to ensure the various properties of the product. Therefore, we cannot adjust the temperature to shorten the plasticizing time of plastic products to meet the production of the products.