CY/T 256-2022 "Green printing food paper Encasement printing production process control requirements" specifies the paper and its composite printing of food Encasement green printing production process control of technical requirements and inspection methods. This standard is applicable to contact food or non-contact food paper Encasement printing green production process control. The article clarifies terms and definitions, including the distinction between contact food paper Encasement and non-contact food paper Encasement. The standard refers to a number of normative documents, such as "General Principles of Encasement and environment" and "Evaluation of odor of Encasement materials and products", to ensure the environment-friendly and product safety in the food Encasement printing process. The implementation of this standard will help to promote the application of green printing technology in the food Encasement industry, and enhance product mass and market competitiveness.