We give you a brief introduction of the five most common problems that you will have when using the shrink film wrapping for packaging. Please have a careful reading of this article to avoid making the same mistake in the future.
1. Uneven Edges in the Shrink Film Roll
The heat shrink wrapping film has the characteristic of contracts to make the package tighter. But this contraction sometimes maybe can not achieve the ideal performance and leave the package with ugly wrinkles and edges. For many buyers, they probably will think the products are defective if the package isn’t good enough. So please be careful with the exterior after the shrinking is finished.
2. Shrink Film Blockage
The shrink film blockage is also a problem that many users would care. It’s the film material melt together when there is more than one layer. This caused mainly by the shrink temperature which higher than the suggested level of the manufacturer. As the result, the different layers of film will melt together and stick together.
3. Defective Seals
Defective sealing is often to see when the sealing position is not ideal or the sealing time or sealing temperature is not enough. The defective seals can make the shrinking to fail when heating is applied.
4. Cat Ears in Shrink Film
Cat ears are describing the triangle shape corners after shrinking. They are non contracted enough both because of the film cut ( too much surplus film material not cut at the corners) and temperature is not matchable with the shrink material.
5. Poor Clarity of the Shrink Film Material
Most users would like the package to be more transparent which can allow the buyers to see the real products inside the package through the film. But the clarity of the package is depending on the shrink film material. If the film is too thick or too poor in quality, the clarity is lower and sometimes the clarity can decrease as the film becomes yellow after a year of storing.