2019-03-05 The edible packaging film we are talking about is a kind of natural edible biomacromolecules as the main matrix, supplemented by food additives, etc., through a certain treatment process, the interaction between the film-forming agent molecules and after drying A dense film with a certain mechanical properties and a porous network structure selected for permeability. At present, the main edible film products in China are glutinous rice paper and frosting paper. Strictly speaking, it cannot be called paper. In fact, the city has an edible film, which is transparent and tasteless. It is usually packaged in A4 size and directly wrapped in candy, cake or medicine. Above, can be eaten directly. From the domestic and international situation, there are several problems in the study of edible film: insufficient mechanical strength; poor heat sealability; poor water resistance; poor bacteriostasis. Due to the narrow adaptation surface of the edible film and the high cost, the high-end edible film is mostly imported, the domestic manufacturers are few, and the quality is not guaranteed. Only the breakthrough in technology can open the edible