The classify of plastic extrusion machine
The plastic extrusion machine is usually divided into single screw extruder, double screw extruder and multi-screw extruder.The screw extruder consists of four parts: plasticizing system, heating and cooling system, transmission system and electric control system.The main part of the plasticizing system is the screw rod, according to the variety of plastic products choose different type of extruder.
How to choose Plastic extrusion machine?
1. First determine whether the extruded product is plastic or rubber;
2. Determine the diameter of screw rod according to the product section size;
3. If it is a rubber product, it is necessary to determine whether the single screw extruder needs to exhaust (cold feed) according to the curing process.
4. After determining the above contents, we will review the configuration, quality and the ability of the manufacturers of different brand equipment.
The main application of plastic extrusion machine
Single screw plastic extrusion machine is the most widely used, suitable for general material PP, PE, PS, ABS, PA, PVC, PC, extrusion processing.Twin screw extruder with less heat produced by friction, material by shear was homogeneous, the screw of large conveying capacity, the quantity is stable, materials in the barrel to stay long, mixed evenly.
Single screw extrusion machine as plasticizing granulation machinery or processing machinery occupies an important position in industry in recent years, the essence of the east machine have single screw extruder had the very big development, created a variety of new extrusion plastic products: strip, cane, pipe material, granulation, bar, sheet, plate, etc.
Twin-screw extrusion machine feeding feature is good, suitable for powder processing, and better than single screw extruder with mixing, exhaust, reaction and self-cleaning function, the features of poor processing thermal stability of plastic and more shows its superiority when blending.On the basis of the twin screw extruder, in order to more easily processing thermal stability blend material, develop more screw extruder, such as the essence of the east plastic extruder, plastic, twin screw extruder, created a variety of new extrusion plastic products hard particle, pipe, plate, sheet and strip, plate, etc., to PVC modified material is given priority to.