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The principle of plastic granulator

Zhangjiagang Sansu Machine Co.,Ltd | Updated: Jan 25, 2018

When the plastic is added to the hopper, the hopper falls smoothly to the screw and is threaded by the screw thread. With the rotation of the screw, the screw is propelling to the direction of the machine head, forming a mechanical conveying process. Plastic from the feeding port to nose running, because the screw thread depth decreases, because of filter, the manifold and the die resistance exists in the melt during the formation of a high pressure, the material pressure is very dense, improve its heat conductivity, helps to quickly melt plastic at the same time, increased pressure to make the gas that existed at the material between the grains from the exhaust vent.

At higher pressure at the same time, plastic hand by external heating, on the other hand the plastic itself in the process of movement, compression and shear mixing, due to internal friction generated a lot of heat, in the combination of external and internal forces, plastic temperature gradually increased, the physical state has also experienced the change of glass state high elastic state - sticky.