The heat shrinkable film is widely used in industry and in life, and can be used for its packaging function in food or other articles. Then, what heat treatment methods are used for the heat shrinkable film? As a POF Shrink Film Factory, let's give you a brief introduction.
1. The heat shrinkable film can only maintain a stable attitude under high temperature working conditions, which is a qualified shrink film.
Cross Linked Film
2. A good Polyolefin Shrink Film is subjected to a high temperature test of 500 degrees. It is allowed to be packaged under different temperature conditions to detect whether it is dissolved. If it is, the quality of the heat shrinkable film is not good. All normal heat shrinkable film can be put into use.
3. Test and package Cross Linked Film at different temperatures. If the packaging is normal, there is no shortage of packaging, indicating that the heat-shrinkable film is heat-treated.