According to the use of organic chemical fluoride to stretch paper and cardboard vacuum bags, the paper can be made dry, that is, it can prevent oil and vegetable fats from penetrating the paper from the food category 96). Perfluoroalkyl ammonium salt and perfluoroalkyl ammonium sulfate grease are common oil repellents. After careful consideration, it is found that polyfluoroalkyl phospholipids are the key source of perfluorocardic acid and perfluoroacid. Perfluorocarboxylic acid (PFCAa), even a decomposable compound, is actually used in the production of non-stick cooking and food products that touch the original material. Overseas, it is reasonable to explain that if this compound in paper packaging products will be transferred to the food and be digested and absorbed by the body, it will constitute a bloody organic chemical environmental pollution*4). Similar to the vacuum bag, the vacuum bag product also contains printing ink, which poses a problem of environmental pollution. There is no special printing ink for food packaging materials in our country. Most of the printing inks printed on paper packaging are solvent-based gravure printing inks containing xylene and toluene.” Most solvents can be deleted after drying, but The remaining organic solvents will be transferred to the food category to contaminate the health of the body. Secondly, in the color pastes and dyes used in printing inks, there are metal cadmium (lead pot, mercury, etc.), aniline or fused ring chemicals. Chemical substances such as substances can constitute heavy metal pollution, while aniline or fused ring dyes are significant harmful substances." Therefore, the harmful substances in the water-based inks of paper packaging are relatively heavy for food hygiene and safety. In order to ensure the safety of food packaging materials, the use of benzene-free packaging printing will become a trend of progress.
