Can I use a vacuum bag to keep food safe?

　　According to the stretching treatment of paper and cardboard vacuum bags with organic chemical fluoride, the paper can be made anti-drying, that is, it can prevent oil and vegetable grease from penetrating into the paper from food 96).

　　Perfluorohydrocarbyl ammonium salts and perfluorohydrocarbyl ammonium sulfates are common oil repellants. Under consideration, it was found that polyfluoroalkyl phospholipids are the key source of perfluorocardiac and perfluoroacid.

　　Perfluorocarboxylic acid (PFCAa), a decomposable compound, is suitable for the production of oil repellents for non-stick pans and food products that touch raw materials. According to overseas consideration, if this compound in paper packaging products will be transferred to the ingredients and be digested and absorbed by the body, it will cause blood and organic chemical environmental pollution*4).

　　Similar to vacuum bags, vacuum bag products also have the problem of environmental pollution caused by printing ink. There is no special printing ink for food packaging materials in my country, and most of the printing inks for packaging and printing on paper packaging are solvent-based gravure printing inks containing xylene and toluene." After drying, most solvents can be deleted, but Residual organic solvents will be transferred to food and smear health. Secondly, in the colorants and dyes used in printing inks, there are metal cadmium (lead pot, mercury inscription, etc.), aniline or condensed ring chemicals Substances and other chemical substances can constitute heavy metal pollution, while aniline or condensed ring dyes are significant harmful substances.”

　　Therefore, the harmful substances in the water-based ink for paper packaging are very heavy for food hygiene and safety. In order to ensure the safety of food packaging materials, the use of benzene-free packaging and printing will become a development trend.

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