At present, PVC flat hoses are widely used in many fields, even involving food, medical and other fields. Therefore, the quality of PVC flat hoses is very important. Then, what causes the quality problems of PVC flat hoses?
This phenomenon occurs in the PVC layflat hose because the die temperature is too low, or the inner wall of the die is not dry, the net compressed air supply is insufficient, or the air leaks. To solve this problem, you can appropriately increase the temperature and clean the mold. At the same time increase the air supply or check the air leakage and repair it.
This problem may be caused by incorrect positioning of mandrel and mold, uneven plasticization, abnormal traction, unstable compressed air or unstable head temperature.
To solve this problem, first, adjust the center position of PVC flat hose mandrel and mold, then check the traction device, strengthen the control of plasticizing system, check whether the heating device of the machine head is intact, and stabilize the temperature around the machine head.
This situation of PVC layflat hose for sale is due to uneven dispersion of raw material additives, poor raw material fluidity, high temperature of head and filter screen, poor structure of head filter screen and shunt plate, and failure to clean filter and lead.
In view of this situation, first check the filter screen and shunt plate and clean the filter screen. You can choose to improve the raw material formula, strengthen mixing, improve the dispersion performance and reduce the temperature appropriately.
Wrinkles and ripples appear on the surface of the PVC flat hose, mainly due to uneven mold discharge during the production process, excessive mold temperature or uneven heating, and insufficient cooling and cooling water supply. The setting device causes the water temperature to be too high and the towing speed is too slow.
In view of this problem, the temperature can be reduced by adjusting the mold gap and checking whether the heating device of the PVC flat hose is damaged. It can also increase the water supply and speed up the towing speed.
Cracks on the inner wall of the PVC flat hose are mainly caused by the mixing of raw materials with impurities. It may also be that the temperature of the mandrel and barrel is low, the traction speed is too fast, and there is too much lubricating oil.
In this case, the raw material can be pretreated to increase the temperature of the core mold and barrel of the PVC flat hose, and slow down the traction speed.
We focus on manufacturing high-quality hoses and hose accessories. Our principle is good raw materials and stable quality. We do not do one-time business, but are willing to reach a permanent cooperative relationship with our customers. Our quality is widely recognized in the world such as the United States, Canada, the European Union, Japan, Southeast Asia and the Middle East. If you have any needs, please feel free to consult us.
