If you ever come across heating wrapping then you will come to know that there are several issues with this kind of wrapping. Bo needs to worry because such issues are natural and their quick fixes are also available so that the user doesn’t have to face any kind of delay while packaging the products.
In the given article you will find these issues and their solutions that may help you to overcome the problem in seconds. You can apply these solutions over KEEPTOP Packaging to make your products safer. So, let us have a quick talk regarding this interesting topic.
Burning Holes
You may have seen different packaging with burning holes when passing through a heat shrink tunnel. These holes are formed because a large amount of heat is applied to the shrink film and as a result cloudy surface forms with holes.
Fixing Measures
The initial step that you can take to overcome this issue is to bring a reduction in the temperatures of the tunnel. The conveyor speed also plays a vital role in this regard. Hence, you can increase the heat shrink wrap machine and shrink tunnel’s conveyor speed to resolve this issue. Also, increase the heat shrink wrap roll’s vent holes.
Fish Eyes
Another issue is the poor shrinking effect along with oval patterns on the heat shrink wrap surface. They produce because of less contact with the heat.
Fixing Measures
Increasing the temperature of the heat shrink tunnel will improve this issue. Next, increase the heating time and bring a decrease in the speed of the heat tunnel belt and wrapping machine. Low air can also affect the shrinking procedure hence increasing it will bring improvement.
Weak Sealing Lines
You have seen different packaging products have weak sealing effects. This is because of the bad seal bar sealing effect.
Fixing Measures
When the sealing doesn’t find proper time then it leaves the space as a result. Hence, increases the hot knife sealing time. It may be due to a damaged thermal pad so replace it. Thoroughly clean the seal base and hot knife. Try to balance the pressure of the seal bar to reduce the weak sealing risk.
Angel Hair
The other most common problem is the presence of strands of melted plastic in the middle of the film and particular products. It is because of the same reason that enough heat is not provided to the seal bar.
Fixing Measures
One of the most effective fixing measures to resolve this issue is to increase the hot knife temperature of the seal bar. Next, you can adjust the seal bar because sometimes due to non-uniform pressure, melted plastic remains in between the product and the film.
Zippering
Another common but easily removable issue is the appearance of intermittent holes looking like zippers, on the shrink film.
Fixing Measures
Vent holes affect the shrinking quality therefore you can increase the holes to bring improvement in the shrinking quality. Shrink film is highly affected by the pinwheel perforating device. Figure out whether the device is in the correct position or not.
Deformation
When the product is crushed because of the large shrinking force then it will result in deformation of the product.
Fixing Measures
The size of the shrink film should be large to avoid deformation of the shrink film. Make sure the temperature of the tunnel is not high otherwise will affect the shrinking film’s appearance. If the above solutions do not work then increase the speed of the tunnel.
Final Verdict
Facing a heat shrink film problem is not very rare and every third person may have to face such an issue. Instead of ignoring the problem or panicking about it, it would be a wonderful plan to do some research and know their quick fix. In this way, not only your packaging will be perfect but the safety of products also enhances.
