The food packaging bag is a type of packaging design that facilitates the preservation and storage of food daily life, resulting in the production of product packaging bags. It refers to a film container that directly comes into contact with food and is used for holding and protecting it. By definition, food bags should be manufactured using food-grade plastic film, typically consisting of more than two layers of composite materials. Depending on their application scope, food packaging bags can be categorized as ordinary ones, vacuum-sealed ones, inflatable ones, boiled ones, steamed ones, and functional ones.
