Introduction to the working principle of Plastic Recycling Pelleting Machine

Plastic Recycling Pelleting Machine:After the plastic enters the screw from the hopper, it is conveyed forward by the friction between the inner wall of the barrel and the surface of the screw under the action of the rotating screw. With the continuous transportation of materials, the materials begin to be compacted. When the material enters the compression section, due to the gradually shallower screw groove depth and the resistance of the machine head, the plastic gradually forms a high pressure and is further compacted. At the same time, under the action of internal friction and shear heat generated by the external heating of the barrel and the intense stirring, mixing and shearing friction of the screw and the inner surface of the barrel, the temperature of the plastic continues to rise and it contacts the barrel. At a certain point, the temperature of the plastic reaches its melting point and begins to melt. As the material is transported and heated, the amount of molten material gradually increases, while the unmelted material decreases accordingly. At about the end of the compression section, all materials are transformed into a viscous fluid state, but the temperature at each point is not yet uniform, and the homogenization effect after the homogenization section is relatively uniform, and the screw will quantitatively, pressure and temperature the molten material. Squeeze into the nose of the machine. The die in the machine head is a forming part, through which the material obtains the multi-section geometry and size. After cooling and shaping and other processes, the formed product can be obtained.