Extrusion Molding Principle

- Jan 25, 2018-

Material from the hopper into the barrel, in the screw rotation, through the inner wall of the barrel and screw surface friction shearing effect forward to the feeding section, in this loose solid forward conveying is compacted at the same time, in the compression section, the depth of the spiral groove is shallow, further compaction, at the same time in the barrel outside heating and screw and barrel inner wall friction shearing effect, the material temperature rise begins to melt, The compression section ends, the homogenization section makes the material homogeneous, the constant temperature, the ration, the constant pressure extrusion melt, the molding after the Machine Head, after the shape obtains the product.