All along, the food packaging sector has shown a strong interest in antibacterial coating films because it can prevent food mildew from occurring without the use of food preservatives. At present, German scientists use pharmaceutical expertise to create such antimicrobial packaging that can be applied to liquid beverages such as milk. This is an important change in food packaging technology. In order to prevent the food in the packaging bag from being contaminated by bacteria, foods using film packaging usually contain added preservatives such as sorbic acid and benzoic acid, but consumers want fewer additives in the food the better, so food manufacturers hope to meet At the same time, consumers need to make food safer. Researchers at the German processing plant and packaging Fraunhofer Association found that in order to replace the preservatives in foods, it is necessary to coat the packaging film with an antibacterial coating. This special packaging film coating can be processed by special processes based on composite resins and other substances. to make.