废塑料在塑料颗粒机中如何再生？

塑料产品为我们的生产和生活提供了很多便利。这是其好的一面。另一方面，它也造成了我们生活中最大的污染源之一。它不会自然降解，而塑料颗粒机很好地解决了这个问题。这种污染实现了废塑料的回收利用。

废塑料是如何再生的？ 塑料颗粒机让我们仔细看看

After the plastic is added to the hopper, the hopper falls smoothly onto the screw and is bitten by the screw thread. As the screw rotates, the thread is forced to advance toward the head to form a mechanical conveying process.

When the plastic is running from the feeding port to the pelletizer machine head, the thread depth of the screw is gradually reduced, and due to the resistance of the filter screen, the manifold and the head, high pressure is formed during the plasticizing process, and the material is pressed very much.

密实化改善了其导热性，并帮助塑料快速熔化。同时，逐渐增加的压力导致原本存在于颗粒之间的气体从通气孔排出。

While the pressure is rising, the plastic is heated on the one hand by the outside. On the other hand, during the movement of compression, shearing, and agitation, the plastic itself generates a large amount of heat due to internal friction.

Under the combined action of external force and internal force, the plastic The temperature gradually increases, and its physical state also undergoes a change in the glass state, a high elastic state, and a viscous flow state.

Generally speaking, in the feeding, the glass state is mainly in the middle portion of the compression section where the screw thread is gradually reduced, the material is mainly in a high elastic state, and gradually melts, and the material is in a viscous state at the rear and the squashing section of the compression section.

This is that the plastic has been completely plasticized, and the plasticized plastic is pressed, quantitatively and uniformly continuously extruded from the machine head by screw inference.