In the field of food packaging, food cardboard plays an important role. It is mainly used in the packaging of various types of food, such as cake trays, hamburger boxes, etc. Its scope covers products of different materials, uses and production processes.
From the perspective of materials, common food cardboard includes starch-containing cardboard, wax-coated cardboard, etc. Starch-containing cardboard can block water vapor and grease to a certain extent and keep food dry; wax-coated cardboard has better moisture-proof performance. According to the purpose, there are cardboards that directly contact food, such as cardboards used to wrap unpackaged fresh fruits, which have extremely high hygiene requirements; there are also cardboards with limited contact with food, such as cardboards used to make the inner layer of food display boxes. From the perspective of production technology, there are different types made of natural fibers and chemical fibers.
At present, the production and use of food cardboard are subject to strict implementation standards and specifications. my country's "National Food Safety Standard Food Contact Paper and Paperboard Materials and Products" stipulates its scope of application, raw material requirements, sensory requirements, physical and chemical indicators and microbial limits. For example, the raw materials should not harm human health, and the fiber raw materials are mainly plant fibers; the color and luster are normal and there is no odor; the physical and chemical indicators such as the total migration amount to the liquid have clear numerical limits, and the microbial indicators also have corresponding regulations.
There are also various relevant standards in the world. Although the standards formulated by different countries and organizations have different details, they are all aimed at ensuring the safety and applicability of food cardboard and promoting the healthy development of the industry. The continuous refinement and improvement of the implementation standards of food cardboard is conducive to protecting the health of consumers and promoting the continuous progress of the industry in terms of safety, environmental protection, quality, etc.