Hazards and detection methods of solvent residues in food flexible packaging.mini Snack food bag company

Food packaging bags are a process in the modern food industry, which originally played an important role in protecting, beautifying, promoting, and facilitating food storage and transportation. They have become an indispensable part of food. However, if the control of food packaging during the printing and lamination process is not sufficient, the produced packaging bags will be substandard or even harmful, and it may become a hidden killer, leading to solvent residue problems, such as benzene residue problems, as benzene compounds have been identified as carcinogens by the World Health Organization. Therefore, how to reduce residual solvents, especially to reduce and eliminate benzene solvents, has been a concern for many flexible packaging manufacturers.

The use of gas chromatography to detect residual solvents in plastic flexible packaging. Composite flexible packaging uses a large amount of organic solvents in the printing, lamination, and coating processes, such as toluene, xylene, ethyl acetate, butanone, butyl acetate, ethanol, isopropanol, etc. These solvents will be more or less residual in composite packaging. If the residual amount of solvents is high, they can be used for packaging food, drugs, etc., which not only affects food taste but also endangers people's health. Therefore, the residual solvent amount in the composite film should be tested. The recent exposure of the "toxic food bag" incident produced by a plastic color printing company in Lanzhou is a typical example of benzene solvent residues severely exceeding the standard.

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