In the process of shrink packaging, some problems are often encountered such as flatulence, atomization, fish eyes and other problems of the shrink film. These problems can be corrected by adjusting the settings of the machine. The most commonly adjusted temperature of the packaging machine, the speed of the circulating air, the speed of the conveyor belt, the number of ventilation holes and the size of the shrink film.
• Flatulence hot air remains in the shrink film
solution:
1. Increase the number of ventilation holes to speed up the air leakage from the shrink film 2. Slow down the speed of the conveyor belt of the packaging machine, so that the hot air has a longer time to leak out of the shrink film 3. Increase the temperature of the packaging machine to help the air Leakage from the shrink film
• The surface of the atomized shrink film becomes blurred, like a mist
solution:
4. Lower the temperature of the packaging machine. Excessively high temperature is the cause of shrink film atomization. 5. Increase the speed of the conveyor belt of the packaging machine to reduce the time that the shrink film contacts the heat.
• The sealing line of the weak sealing line shrink film is easy to break or have small holes
solution:
6. Lower the temperature of the heat sealing knife of the sealing machine. 7. The height of the sealing line is incorrect. The height of the sealing line should be half of the height of the packaging. 8. The pressure of the sealing frame is not even. Although the horizontal position of the sealing frame needs to be adjusted. The sealing knife or sealing base may become dirty, clean the heat sealing knife or sealing base 10, the thermal insulation pad or the thermal insulation paste of the sealing base is damaged, the thermal insulation pad or the thermal insulation paste 11 can be replaced, the sealing time is too short, The sealing pressure disappears before the sealing line is completely combined, and the sealing time can be adjusted longer
• Fish-eye wrinkles appear on the surface of the fish-eye shrink film
solution:
12. The temperature of the shrink packaging machine is too low. The temperature of the packaging machine can be increased. 13. The speed of the conveyor belt of the shrink packaging machine is too fast. The speed of the conveyor belt can be adjusted down. 14. The circulating wind force of the shrink packaging machine is too low. Reduced circulating wind
• A series of wrinkles in the crow's feet appear at the corners and edges of the shrink film
solution:
15. Too many ventilation holes on the shrink film, causing air to leak out of the shrink film too fast, the shrink film fails to shrink completely, the number of ventilation holes can be reduced 16, the speed of the conveyor belt of the shrink packaging machine is too fast, and can be transported The speed of the belt is lowered.
17. The temperature of the shrink packaging machine is too low, and the temperature of the packaging machine can be adjusted up. 18. The circulating wind power of the shrink packaging machine is too low, which can be adjusted down.
• Dog ear shrink film forms a protruding triangle at the corner of the package
solution:
19. The shrink bag of the wrapped packaging is too large, you can put the shrink bag size? Silent? ∫ bad? Br /> 20. The speed of the conveyor belt of the shrink packaging machine is too fast, you can reduce the speed of the conveyor belt 21, shrink packaging If the circulating wind power of the machine is too low, the circulating wind power can be adjusted down.
• The sealing and cutting position is wrong. The position of the sealing line should be half of the height of the package.
solution:
23. The height of the conveyor belt of the sealing machine is incorrect, and the height of the conveyor belt can be adjusted to a suitable position. 24. The height of the sealing rack is not correct. The height of the sealing rack can be adjusted to a suitable position. 25. The circulating wind direction of the shrink packaging machine is incorrect. The recirculation wind direction can be readjusted. 26. The shrinkage bag of the wrapper is too big. Can the shrinkage bag be measured?
• Crush the packaging material. The packaging material presses the shrink film until it is deformed or crushed.
solution:
27. The temperature of the shrink packaging machine is too high, and the temperature can be lowered. 28. The speed of the conveyor belt of the shrink packaging machine is too slow. The speed of the conveyor belt can be increased. 29. The shrinkage bag of the packaging material is too small. Bag size? Squeeze glutinous lily bad? Br /> 30. The shrinking tension of the shrink film used is too large, which is not suitable for the packaging. Use a shrink film with a lower shrink tension
• There are zipper-like broken holes on the surface of the zipper-shaped hole shrink film
solution:
31. The venting device tears the shrink film. Check the venting device of the sealing machine. 32. The number of venting holes is not enough. The number of venting holes can be increased.
• Filament appears at the sealing and cutting position.
solution:
33. The temperature of the heat sealing knife of the sealing machine is too low, and the temperature of the heat sealing knife can be adjusted up. 34. The sealing and cutting time is too short, and the sealing and cutting time can be increased.
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