Plastic extruder category

Plastic extruders can be divided into single-screw extruders, twin-screw extruders and multi-screw extruders according to the number of screws. At present, single-screw extruders are the most widely used and suitable for extrusion processing of general materials. Twin-screw extruders have less heat generated by friction, more uniform shearing of materials, larger conveying capacity of screws, more stable extrusion volume, longer material retention in the barrel, and uniform mixing.
Single-screw extruders occupy an important position as both plasticizing and granulating machinery and molding processing machinery. In recent years, single-screw extruders have made great progress.
Twin-screw extruders have good feeding characteristics and are suitable for powder processing. They have better mixing, exhaust, reaction and self-cleaning functions than single-screw extruders. Their characteristics are that they are more superior when processing plastics and blends with poor thermal stability. On the basis of twin-screw extruders, in order to make it easier to process blends with poor thermal stability, multi-screw extruders such as Guanghua plastic extruders have been developed.
1. According to the number of screws, it is divided into single-screw extruder, twin-screw extruder and multi-screw extruder;
2. According to whether there is a screw in the extruder, it is divided into screw extruder and plunger extruder;
3. According to the running speed of the screw:
Ordinary extruder: the speed is below 100r/min;
High-speed extruder: the speed is 100~300r/min;
Ultra-high-speed extruder: the speed is 300~1500r/min.
4. According to the assembly structure of the extruder: there are integral extruders and separate extruders;
5. According to the spatial position of the screw in the extruder, it can be divided into horizontal extruders and vertical extruders;
6. According to whether the extruder is vented during the processing, it can be divided into venting extruders and non-venting extruders.