Hangzhou Chaohong plastic packaging Co., Ltd. is an enterprise focusing on plastic packaging. Heat shrinkable film is one of the company's main products. The types of heat shrinkable film produced by the company include PE heat shrinkable film, POF heat shrinkable film and PVC heat shrinkable film　

According to the survey, meat food packaging bags have become a fast-growing flexible packaging market at the rate of 20% per year. More than 30% of the more than 10 billion fresh meat packages in the world use bag packaging. It can be predicted that heat shrinkable packaging bags will become a fast-growing flexible packaging market.　

Heat shrinkable film is a kind of thermoplastic film which is oriented in the longitudinal and transverse tension of the film in the production process and shrinkable by heat in the use process. The heat shrinkability of film was applied as early as 1936. At the beginning, rubber film was mainly used to shrink and package foods that are not easy to preserve.　

The application range of heat shrinkable film is very broad, and there are many manufacturers producing heat shrinkable film, which leads to the uneven quality of heat shrinkable film. Then we need to know the methods to distinguish the quality of heat shrinkable film. The following small series will introduce some methods to distinguish the quality of heat shrinkable film.　

In our daily life, packaging materials can be seen everywhere, in which heat shrinkable films are widely used in all walks of life. The following small series will introduce the classification of heat shrinkable films.　

Heat shrinkable film is used for the sales and transportation of various products. Its main function is to stabilize, cover and protect products. The shrink film must have high puncture resistance, good shrinkage and certain shrinkage stress. There are many kinds of heat shrinkable films, which are used in various fields. What are the differences between PE / POF heat shrinkable films?