What is the use of single screw extruder, how to classify?

Single screw extruder is a kind of equipment widely used in the field of plastic product production. Its use and classification can be summarized in detail as follows:

First, the use of single screw extruder

Pipe extrusion: Suitable for PP-R pipe, PE gas pipe, PEX cross-linked pipe, aluminum-plastic composite pipe, ABS pipe, PVC pipe, HDPE silicon core pipe and a variety of co-extruded composite pipe production.

Sheet and sheet extrusion: suitable for PVC, PET, PS, PP, PC and other profiles and sheet extrusion, but also suitable for other kinds of plastic extrusion, such as silk, rod and so on.

Extrusion of profiles: By adjusting the speed of the extruder and changing the structure of the extrusion screw, it can be applied to the production of various plastic profiles such as PVC and polyolefin.

Modified granulation: suitable for blending, modifying and enhancing granulation of various plastics.

Second, the classification of single screw extruder

According to the total number of screws:

Single screw extruder: This is the main type discussed in this paper, with simple structure, easy manufacturing, high processing efficiency, cheap and other characteristics, is the most mature technology, the most amount of extruder type.

Twin-screw extruder: usually used for extruding profiles, pipes, plates and extruding granulation.

Multi-screw extruder: relatively rare, mainly used for the production of plastic products with special needs.

According to the function of the extruder:

Universal single screw extruder: suitable for the production of most plastic products.

Exhaust extruder: mainly used in the extrusion process that needs to remove gas from the material.

Feeding extruder: mainly used for continuous feeding system to ensure stable operation of extruder.

Step extruder: suitable for the production of plastic products requiring multistage processing.

Classification of structural features:

Single screw extruder has developed from the initial basic spiral structure, such as damping screw block, exhaust screw, slotted screw barrel, pin barrel, building block structure and other different structural types.

Single screw extruder has a wide range of applications in the field of plastic products production, its simple structure, convenient operation, high processing efficiency, is one of the indispensable equipment in the plastic products production line. At the same time, according to different production needs, different types of single screw extruders can be selected to meet different production requirements.