Specifically, the working principle of plastic extruder, after plastic and hopper enter the extruder barrel, with the rotation of the screw, they are forcibly pushed to the direction of the head by the thread. Due to the resistance of the filter screen, the splitter plate and the head mold, and the gradual decrease of the capacity between the threads, the advancing material is greatly resisted by the heat from the barrel and heated.

On the other hand, when the plastic is subjected to compression, shearing, stirring and other forces in motion, the friction with the barrel and screw and the friction between plastic molecules will generate a lot of heat. Due to the rising temperature of plastic in the barrel, its physical state gradually changed from glassy state to high elastic state, and finally changed to viscous state, and further completely plasticized.

Function of blow molding machine

Blow molding machine plays an important role in our daily life and blow molding industry. The plastic packaging of many products is made by blow molding process of blow molding machine. For example, various types of blow molding machines, including pallet blow molding machines, ton barrel blow molding machines and chemical barrel blow molding machines, are all produced by blow molding machines.

There is no fixed price for the price of blow molding machine equipment. The cheap one may be five digits, and the expensive one may be six or seven digits. The results of the equipment are related to the types of products produced, and the results of different types of extrusion blow molding machines and injection blow molding machines will be very different. To quickly know how much a blow molding machine costs, only the manufacturer can provide a clear demand, and then ask the price.