Food packaging can be divided into metal, glass, paper, plastic, composite materials, etc. according to the packaging materials. It can be divided into cans, bottles, bags, bags, rolls, boxes, boxes, etc. According to the packaging type. It can be divided into cans, bottled, encapsulated, bagged, wrapped, perfusion, whole set, sealing, labeling, coding, etc.; It can be divided into inner packaging, second-level packaging, third-level packaging...outer packaging, etc. According to the product level.

Due to more attention to food safety and higher requirements, some countries have strengthened the regulatory management of food packaging.From the implementation of nutrition standards and regulations, indirect additive regulations, etc. to the implementation of biodegradable packaging, electronic scanning of bar codes, etc., are promoting the new development of food packaging.

There are many ways to classify food packaging.For example, according to the technique, it is divided into: moisture-proof packaging, waterproof packaging, mildew-proof packaging, fresh-keeping packaging, quick-freezing packaging, breathable packaging, microwave sterilization packaging, aseptic packaging, inflatable packaging, vacuum packaging, deoxygenation packaging, blister packaging, body-fitting packaging, stretch packaging, cooking bag packaging, etc.The above-mentioned various packages are all made of different composite materials, and their packaging characteristics correspond to the requirements of different foods, which can effectively protect the quality of food.