POF shrink film has been widely used in industry and life. POF shrink film can play its packaging function on food or other items. Today we introduce the method of detecting the heat treatment of POF shrink film:

POF shrink film packed in carton
POF shrink film used for testing

  • 1. POF shrink film can only be qualified if it can maintain a stable posture under high-temperature working conditions.

  • 2. A good POF shrink film has to be tested at a high temperature of 500 degrees. Let it be packaged under different temperatures to check whether it is dissolved. If there is, it proves that the quality of the POF shrink film is not enough. If everything is normal, the POF shrink film can be put into use.

  • 3. The POF shrink film is tested and packaged at different temperatures. If the packaging is normal, there is no loose packaging, which means that the heat treatment of the POF shrink film is qualified.