Double-stage extruder （SP Series） and twin-screw extruder (TSE Series) are the main product series of Kairong Group & Haisi Extrusion. There are big differences between these two models.

Special color masterbatch has significant advantages such as high concentration, good dispersion and cleanliness during product processing.

This article introduces the basic principles of twin screw extrusion of plastics, including Mechanical principles，Thermal principle，Deceleration principle，The feed acts as a coolant，In the feed zone, sticks to the barrel & slides onto the screw，Materials cost the most，Energy costs are relatively unimportant，The pressure at the end of the screw is very important，Output = displacement of last thread +/- pressure flow and leakage，Shear rate plays a major role in viscosity， and The motor is opposed to the barrel these aspects.

The twin-screw extruder is developed on the basis of the single-screw extruder. The difference between the twin-screw extruder and the single-screw extruder is mainly reflected in two aspects: the material transfer method and the material flow velocity field. Compared with the single screw extruder, the complex flow spectrum of the material in the twin screw extruder shows macroscopic advantages that the single screw extruder cannot match, such as adequate mixing, good heat transfer, high melting capacity, good exhaust capacity, and good control of the material temperature. This article will briefly describe the advantages of twin-screw extruders.

​A screw extruder is a machine that can concentrate a series of chemical basic unit processes, such as solid conveying, pressurizing, melting, exhausting, dehumidifying, melting conveying, and pumping out physical processes on the screw in the extruder. According to the number of screws, extruders can be divided into single-screw extruders and twin-screw extruders. What is the difference between the two?