The extruder of plastic extruder can be divided into single screw extruder, double screw extruder and multi-screw extruder.
At present, the application of single screw extruder is the most widely used, suitable for the extrusion process of general materials.
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 extruder as plasticizing granulation machinery or forming machine occupies an important position, industry in recent years, single screw extruder has made great development.
Twin-screw extruder 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 double screw extruder, the multi-screw extruder, such as guanghua plastic extruder, is developed for the purpose of the more easily processed thermal stability difference.
According to the number of screws, it is divided into single screw extruder, double screw extruder and multiple screw extruder.
According to the existence of screws in the extruder, the screw extruder and plunger type extruder are divided into two types.
According to the speed of the screw:
Common type extruder: the speed is below 100r/min;
High speed extruder: the speed is 100 ~ 300r/min;
Super high speed extruder: the speed is 300 ~ l500r/min.
According to the assembly structure classification of extruder: there are integral extruder and separate extruder.
According to the space position of the screw in the extruder, it can be divided into horizontal extruder and vertical extruder.
It can be divided into exhaust extruder and non-exhaust extruder according to the exhaust of extruder during processing.
