The transparency of pof shrink film is relatively high. Packaging products with shrink film can display the product and can also improve the quality of the product. However, the heat seal strength of pof shrink film is not enough. Pof shrink film manufacturers teach you how to deal with it.

Products packed in shrink film
Detail display of POF shrink film placed on the ground

  • 1. Heat sealing pressure. If you want to ensure the heat sealing strength of the pof shrink film, then you must also ensure the pressure. During the heat sealing process, the heat sealing pressure is required to be moderate. Uneven pressure will cause bubbles in the heat sealing part.

  • 2. Heat sealing time. The hot air time is determined by the speed of the machine. When the heat sealing temperature is constant, the longer the heat sealing time, the stronger the adhesion between the heat seal layers, but too long there will be wrinkles.

  • 3. Heat sealing temperature. Pof shrink film manufacturers tell you that temperature also has a great influence on pof shrink film. It is recommended that you adjust the temperature to the half-melt temperature of the pof shrink film. Overheating will melt the pof shrink film.