Common problems and solutions in the use of PVC heat shrinkable film

In the process of shrink packaging, PVC heat shrinkable film often encounters some problems such as flatulence, atomization, and fish eyes of the shrink film. These problems can be corrected by adjusting the machine settings. The most frequently adjusted packaging machine temperature, circulating wind speed, conveyor belt speed, number of ventilation holes and shrink film size. The problem of using PVC shrink film packaging: • Flatulence: Hot air remains in the shrink film. Solution: 1. Increase the number of vents to speed up the air leakage from the shrink film. 2. Slow down the conveyor belt speed of the packaging machine to make hot air There is a longer time to leak out of the shrink film 3. Increase the temperature of the packaging machine to help air leak from the shrink film. PVC shrink film packaging problems 2: • Atomization: The surface of the shrink film becomes blurred, which is solved like a mist Solution: 1. Lower the temperature of the packaging machine. Excessive temperature is the cause of the atomization of the shrink film. 2. Increase the conveyor belt speed of the packaging machine to reduce the time the shrink film is exposed to heat. The use of PVC shrink film packaging problems three: • Fish-eye: Fish-eye-like wrinkles appear on the surface of the shrink film. Solutions: 1. The temperature of the shrink packaging machine is too low, and the temperature of the packaging machine can be adjusted higher. 2. The speed of the shrink packaging machine conveyor belt is too fast to change the speed of the conveyor belt Turn down 3. The circulating wind force of the shrink packaging machine is too low. You can lower the circulating wind force. Previous: Common problems and solutions for the use of PVC heat shrinkable film (2) Next: How to distinguish PVC heat shrinkable film