Plastic pelletizing machine is suitable for the production of PP, PE, PS, ABS, PA, PVC, PC, POM, EVA, LCP, PET, PMMA and other plastic recycling and color mixing pelletizing.

Working principle of plastic granulator.
Plastic from the hopper into the screw, under the action of the rotating screw, through the inner wall of the barrel and the friction of the screw surface forward transport, in the screw feeding section, loose solid granules (or material end) filled screw groove, with the continuous transport of materials, materials began to be compacted. When the material enters the compression section, the depth of the screw groove gradually becomes shallow and the resistance of the head, so that the plastic gradually forms high pressure and is further compacted.

At the same time, in the barrel outside the heating and the screw and the barrel of the inner surface of the material of strong mixing, mixing and shear friction generated by the role of internal friction shear heat, the plastic temperature continues to rise, and the barrel contact with a certain point, the plastic temperature reached the melting point, and began to melt. As the material is transported and continues to be heated, the amount of molten material gradually increases, while the amount of unmelted material is reduced accordingly. At the end of the compression section, all the materials are transformed into viscous flow state, but at this time the temperature at each point is not yet uniform, after the homogenization section of the homogenization effect is more uniform, after the screw will molten material quantitative, constant pressure, constant temperature extrusion into the head. The head in the mouth mold is a molding part, the material through it and obtain the geometry and size of the cross-section, and then after cooling and other processes, you can get good molding products.

With the hot plastic recycling industry, the demand for plastic pelletizing machines is also becoming bigger. With its own advantages, the demand for plastic pelletizing machines in the plastic recycling industry is growing. Many companies have also begun to produce plastic pelletizing machines, which has led to a variety of plastic pelletizing machines on the market, the quality of good and bad, how to choose a set of plastic pelletizing machines for their own, what matters should be noted?

1. according to the user’s own actual situation choose a reasonable plastic granulation equipment, such as the investment budget of raw materials, supply, power supply and water supply of the plant.

2. the reliability, stability, safety and service life of the machine work is an important indicators of the choice of plastic granulator. Reliability and service life, are mainly reflected in the plastic pelletizer system rigidity, with reducer, bearing housing, screw, barrel, cross connector and its bearing structure, size, as well as materials and its heat treatment process; machine stability is mostly expressed in the structure of the equipment and auxiliary systems in the cycle of the operation is smooth, in the quiet work without impact, noise shall not exceed industry standards;. Safety: Preheating screw, the barrel of the prevention of cold start, when the screw of the material has not reached the specified temperature and holding time, is prohibited to start, otherwise accidents will occur.

3. the user can choose the technical parameters of an advanced, more reasonably priced plastic pelletizing machine through vertical or horizontal comparison.

4. the equipment production efficiency to be high, functional facilities to be perfect, and high degree of automation.

5. the plastic granulator energy saving and environmental protection are not to be ignored indicators. Energy-saving mainly reflects the plastic pelletizing machine in the power drive system, cleaning system, heating system, cooling system to meet the normal process conditions and similar machines compared to water and electricity saving capacity.

6. the humanized design and operability of the plastic granulator is also an important indicator of good or bad equipment. Plastic pelletizing machine should make its operation and management more humane, the operation should be convenient, and the display should be simple and easy to understand. There are on parameters selection, and temperature control, which can quickly diagnose and troubleshoot faults, reduce material waste in the shortest possible time, and restore the system to normal operation.