POF heat shrinkable packaging film has a wide range of uses, a broad market, and has the advantages of environmental protection and non-toxicity. Therefore, it has been widely recognized by developed countries in the world, and has basically replaced PVC heat shrinkable packaging film as a mainstream product in heat shrinkable packaging materials. The production of this series of products in China began in the mid-1990s. At present, there are more than ten production lines in China, all of which are imported equipment, with a total production capacity of about 20,000 tons. Due to the certain gap between China's packaging technology and developed countries, the three-layer co-extruded series of heat shrinkable packaging film is still in the initial stage of domestic application, and its application range is still narrow, limited to beverages, audio-visual products, convenience foods and a small number of daily chemical products. In a few areas, the annual demand is about 2-5 to 30,000 tons. PVC heat shrinkable film also occupies a considerable heat shrink packaging market, and has great development potential. With the integration of China's accession to the WTO and the international market, the gradual improvement of packaging requirements for a large number of export commodities, and the rapid development of domestic supermarkets, the application of three-layer co-extruded heat shrinkable packaging film will grow rapidly, and it is foreseeable that three layers The market prospect of co-extruded series of heat shrinkable films is very broad.
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