How to deal with the insufficient heat sealing strength of POF shrinkable film

The transparency of POF shrinkage film is relatively high. Packaging products with shrinkage film can clearly show the products and improve the grade of products. However, the heat sealing strength of POF shrinkage film is insufficient. The manufacturer of POF shrinkage film teaches us how to deal with it.

1. Heat Sealing Pressure. In order to ensure the heat sealing strength of POF shrinkage film, pressure should also be guaranteed. In the process of heat sealing, it is required that the heat sealing pressure should be moderate, and the uneven pressure will cause bubbles in the heat sealing part.

2. Sealing time. Hot air time is determined by machine speed. Under the condition of constant heat sealing temperature, the longer the heat sealing time is, the stronger the bonding between the heat sealing layers will be, but if it is too long, there will be wrinkles.

3. Heat Sealing Temperature. The manufacturer of POF shrinkage film tells us that the temperature has a great influence on the POF shrinkage film. It is suggested that the temperature should be adjusted to the semi-melting temperature of the POF shrinkage film. Overheating will melt the POF shrinkage film.

In the case of insufficient heat sealing strength, you can take the above measures. I believe it can help you. Welcome to buy POF shrinkage film.