It is generally believed that the so-called composite flexible packaging material is a new type of high-quality material that can give full play to the advantages of each component material and form a composite of two or more materials with different properties by means of coating, hot pressing, bonding, mixing, impregnation, and physical deposition. Performance packaging materials [1]. The base materials for making packaging composite materials mainly include plastic, wood, rubber, metal, graphite, porcelain and so on.