Rubber extruder | Rubber sheet extruder | Plastic extruder

> Rubber extruder | Rubber sheet extruder | Plastic extruder
Rubber extruder is a basic equipment in the rubber industry and one of the key equipment that affects product quality in the production process of tires and rubber products. plays a very important role. The development of foreign rubber extruders has gone through plunger type extruders, screw type hot feed extruders, ordinary cold feed extruders, main and auxiliary thread cold feed extruders, cold feed exhaust extruders, pin cold feed Material extruder, compound extruder, etc.
Development history of rubber extruder Plunger extruder
Screw type hot feed extruder
Ordinary cold feed extruder< br/> Cold feed exhaust extruder
Pin cold feed extruder
Compound extruder
The three compound extruder composed one by one is characterized by small size and energy saving Used in tire retreading operations in North America. Despite the many advantages advertised by developers of extrusion technology, not all extruders are successful. Tri-composite equipment was introduced in China and planned to be used for the extrusion of tire treads, but it failed due to problems such as uneven plasticization. According to the opinion of the German company this design was unsuccessful.
The current use situation of domestic rubber extruders
With the emergence of cold feed extruders and the widespread use of hot feed extruders, the application scope of hot feed extruders is gradually narrowing. Rubber extruders have developed from hot feeding to cold feeding. Cold feeding pin-type extruders have become the mainstream of development. At present, pin-type extruders have been widely used in my country's rubber industry, involving tire treads, radial tires, sidewall bead rubber, various rubber hoses and inner lining films, etc. All machines used are imported and made in China and have screw diameters with an aspect ratio of . Pin type cold feed extruders have many advantages over hot feed extruders and ordinary cold feed extruders. In the past ten years, it has been widely used in my country's rubber industry production and its uses have continued to expand. The pin-type cold-feed extruder introduced early in China is mainly used for radial tire tread rubber extrusion and rubber core and rubber coating production processes in rubber hose production. Most of today's semi-steel and all-steel radial tire treads are produced using pin-type cold-feed extruders. Many manufacturers use pin-type cold feed extruders in the production process of bias tires and other rubber products. In the rubber industry, the traditional production process is the extruder. As a molding and extrusion process equipment, the pin-type cold feed extruder has been widely used in steel fiber cord calenders and air-tight sealing machines due to its large extrusion volume and good plasticizing effect. Glue supply for layer film calender. In recent years, pin-type cold-feed extruders have also been promoted for filtering glue and have been well received by users.
The pin-type cold-feed internal compound extruder has also been widely used in the production of radial tires and has become a key equipment in the production of radial tires. Although some companies still use the off-machine compound extrusion process in production, with the new technology With the improvement and update of technology and the development of market economy, the old production technology and equipment will be eliminated. Internal compound extruder is the inevitable development direction of compound production technology.
However, hot feed extruders still account for a large proportion in my country's rubber industry production enterprises. According to incomplete statistics, the hot feed extrusion production process that uses open mills to supply glue accounts for the majority of the domestic production. Many old rubber production companies in our country use extrusion equipment from the 1990s with backward technology and equipment. Some companies believe that old extrusion equipment has certain advantages, such as open mills, good rubber dispersion, good operability, and skilled operators. However, the advantages of pin-type cold-feed extruders are greater than hot-feed extruders. The pin-type cold-feed extruder represents the development direction of rubber extruders and has great potential for development. It can be seen that there is still a lot of room for the technical transformation of the extrusion process in my country's rubber production enterprises to further promote the use of pin-type cold feed extruders.