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Rubber Barrel and Screw manufacturers take you to understand what performance the extruder has
Rubber Barrel and Screw manufacturers tell you that the flow velocity distribution of the material in the single-screw extruder has been quite clearly described, while the flow velocity distribution of the material in the twin-screw extruder is quite complicated and difficult to describe. Many researchers just do not consider the material flow in the meshing area to analyze the flow velocity field of the material, but these analysis results are very different from the actual situation.
Because the mixing characteristics and overall behavior of a twin-screw extruder are primarily determined by the leakage flow that occurs in the intermeshing zone, the flow situation in the intermeshing zone is quite complex. Rubber Barrel and Screw manufacturers tell you that the complex flow spectrum of the material in the twin-screw extruder shows macroscopic advantages that the single-screw extruder cannot match, such as sufficient mixing, good heat transfer, large melting capacity, and strong exhaust capacity. And good control of material temperature, etc.
The basic mechanism of the extrusion process is simply that a screw rotates in the barrel and pushes the plastic forward. Rubber Barrel and Screw manufacturers tell you that the screw structure is a slope or slope wrapped around the center layer, the purpose is to increase the pressure in order to overcome the larger resistance. As far as extruders are concerned, there are three kinds of resistance to overcome when working:
One is the frictional force, which includes the frictional force of the solid particles (feeding) on the cylinder wall and the mutual frictional force between them when the screw rotates in the first few turns (feeding zone).
The second is the adhesion of the melt on the cylinder wall.
The third is the flow resistance inside the melt when it is pushed forward.
The twin-screw extruder is developed on the basis of the single-screw extruder. The Rubber Barrel and Screw manufacturer tells you that due to its good feeding performance, mixing and plasticizing performance, exhaust performance, extrusion stability and other characteristics, the current It has been widely used in the molding of extruded products.