Multi-layer co-extruded heat-shrinkable film for extending food preservation period in Shanghai

Recently, a multi-layer co-extruded heat shrinkable film developed by the Shanghai Intellectual Property Service Center and related research institutes was launched. The multi-layer co-extruded heat shrinkable film is non-toxic and harmless, so that the shelf life of the food reaches more than 70 days, and is prolonged by about 40 days than the conventional cling film, which effectively improves the freshness of the packaged food.

According to the Shanghai Intellectual Property Service Center, this multi-layer co-extruded heat shrinkable film is a high-barrier polymer with nylon as its main component. The film is colorless and transparent, the film folding diameter is 200mm~500mm, and the film thickness is 0.04mm~0.08mm. It has good fit and high oxygen resistance and water blocking performance. It can wrap foods and isolate the food from the outside world. , Moisture, odor, and grease are not lost.

The film has good shrinkage. In the process of low temperature, the shrinkage rate reaches 15% to 50%, and the article (slicing chicken or meat products) can be wrapped in an instant. Excellent toughness, wear resistance, oil resistance, a wide range of temperature adaptation (40 °C ~ 120 °C), making it suitable for a variety of products, such as: beef and mutton, chicken, geese, fish, and snacks and other food frozen packaging. The patented results also have strong anti-ultraviolet radiation performance, so that the packaged food is not easy to change color, non-toxic and tasteless, is a truly green packaging material. This product is currently the highest added value in the same industry series.



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