The Working Principle of plastic granulator

 After the plastic is added to the hopper, the plastic falls onto the screw rod smoothly through the hopper and is caught by the screw thread. As the screw rotates, the screw is forced to push towards the head of the machine, forming a process of mechanical transmission.When the plastic is pushed through the feed port to the head , because of the screw thread depth decreases gradually, also for the strainer, spreader plate and the handpiece’s existence of the resistance,High pressure is formed in the process of plastic plasticizing,Keep the materials compacted, Improving its heat conductivity,It helps the plastic melt quickly,At the same time, the gradually increased pressure can make the removal of gases that originally existed between the particles from the air vent .

As the pressure goes up,Plastics are heated by external heat on one hand,On the other hand, the plastic itself is in the process of compression, shearing and stirring,A lot of heat is also produced by internal friction,Under the combined action of external force and internal force,The plastic is getting hotter,The materials state also experienced the change of glass state, high elastic state and viscous flow state .