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Detailed explanation of the cooling system of the PET packing belt production line barrel
Edit:Qingdao Mountain Plastic extruding Equipment Co., Ltd.   PublicDate:2017-11-20

The cooling system of the PET packing belt production line is set to ensure the temperature stability of the plastic required during the molding process. Because during the extrusion process of the PET packing belt production line, sometimes the frictional shear heat generated by the screw rotation is greater than the heat required by the material, which will cause the material temperature to be too high, cause the material (especially heat-sensitive plastic) to decompose, and even cause Mechanical extrusion of strapping is difficult.

In order to remove excessive heat, the barrels and screws of the PET strapping line must be cooled. The purpose of the cooling system in the hopper seat and the feeding section is to cool the barrel. The barrels of modern PET packing belt production lines are equipped with a cooling system. The cooling method of the barrel includes air cooling and water cooling. If it is water-cooled, a spiral groove is formed on the surface of the barrel to wind the cooling water pipe. If air cooling is used, a certain channel must also be formed on the surface of the barrel so that cold air can evenly pass through the surface of the barrel. Wind cooling mainly uses air. From the perspective of cooling effect, air cooling is relatively gentle, but the cooling rate is slow. From the perspective of equipment cost, since it needs to be equipped with blower and other equipment, its cost is high. In addition, the air cooling system is huge, and the cooling effect is affected by the outside temperature.

Water cooling usually uses tap water, so the device used is simple. The water cooling speed is fast, but it is easy to cause rapid cooling, and the water is generally not softened. Water pipes are prone to scaling and rusting, which reduces the cooling effect. Therefore, the water used in a perfect water cooling system should be chemically treated. Water cooling is generally used in large packing belt machinery.


Qingdao Mountain Plastic extruding Equipment Co., Ltd.

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Address:Nanguan Industrial Park, Jiaozhou, Qingdao, Shandong, China  TelePhone:  MobilePhone:+8613606307135