How to deal with insufficient heat seal strength of pof shrink film

The transparency of pof shrink film is relatively high. Packaging products with shrink film can clearly display products and improve the grade of goods. However, pof shrink film also has insufficient heat seal strength. Pof shrink film manufacturers teach you how to deal with it. 1. Heat sealing pressure. If you want to ensure the heat sealing strength of the pof shrink film, you must also ensure the pressure. During the heat sealing process, the heat sealing pressure is required to be moderate. The uneven pressure will cause bubbles in the heat sealing part. 2. Heat sealing time. The hot air time is determined by the machine speed. When the heat-sealing temperature is constant, the longer the heat-sealing time, the stronger the bonding between the heat-sealing layers, but if it is 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 semi-melting temperature of pof shrink film. Overheating will melt pof shrink film. In the case of insufficient heat seal strength, you can take the above countermeasures. I believe it can help you. We are a pof shrink film manufacturer. Welcome to buy pof shrink film. Author: one on xiaohong: the type of shrink film presentation