Working process of melt blown cloth screw
The screw extruder is mainly composed of screw, barrel, head, feeding mechanism, transmission device and temperature control system. The length diameter ratio of the screw in the cold feed extruder is generally 8-18. The extruded products are of good quality and do not need to be equipped with a hot mill. The hot feed screw extruder must feed the hot tempered rubber. The rubber is further plasticized through the functions of screw extrusion, shearing and stirring, and the rubber is further plasticized by n Continuous extrusion.
Technology of melt blown cloth screw
The screw adopts the low-temperature mixing element design, with good plasticizing performance and special processing equipment, so that the manufacturing accuracy of the screw barrel is higher and the straightness is better.
Different from ordinary extruder screw
Screw extruder is a machine that can concentrate a series of chemical basic unit processes, such as solid conveying, pressurization, melting, exhaust, dehumidification, melt conveying and pumping and other physical processes on the screw in the extruder. Compared with single screw extruder, twin screw extruder can make the melt mix more fully, so it is widely used.
Single screw machine and double screw machine: one is a screw, the other is two screws. Both are driven by a motor. The power varies with the screw. The power of 50 cone double is about 20kW, the power of 65 cone double is about 37KW. The output is related to the material and screw, the output of 50 cone double is about 100-150kg / h, and the output of 65 cone double is about 200-280kg / h. The output of single screw is only half. Extruders 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 widely used, which is suitable for the extrusion of general materials. The twin-screw extruder has the advantages of less heat generated by friction, more uniform shearing of materials, larger conveying capacity of screw, more stable extrusion, long stay of materials in the barrel and even mixing.