Why is food sack a peculiar smell

Food packaging odor found in different stages, may result in the reason is different also. Is likely to be unqualified packaging color printing, composite process lead to smell, food metamorphism odor-causing likely also. How do we find out the cause of the food sack a peculiar smell? Small make up to summarize the following points. A, when the food packaging bags or film before use, a peculiar smell. Is that bag or on the roll of film have residual solvent ink, the ink or use is not up to standard. Ink is to make the ink contains more benzene compounds do not meet the requirements of food, such as material, the material will be a pungent odor. Residual flux may be improper printing technology in printing ink, printing ink in the solvent to evaporate, on the other hand is a composite, viscose too thick, solvent overflow, lead to excessive residual flux. Apart in the food packaging immediately after two, heat sealing mouth smelling, extrusive gas have peculiar smell. This is usually bags in composite process, viscose overflow, or viscose thick lead to inadequate solvent evaporation. When heated, viscose vaporization, or solvent volatilization, lead to bad breath. Three, in the packaging sealed after a period of time, in the open bags didn't appear peculiar smell. Is caused by a gas product deterioration, peculiar smell. On the one hand may be inadequate sterilization products, leading to product deterioration; On the other hand may be the barrier property of the packaging bags, air tightness is not good, leading to excess oxygen into the bag, lead to shorter product shelf life. The previous two situation, basic can eliminate, sampling tests each batch of food packaging, maintenance on residual flux not overweight or no residual flux. Detect excessive packaging residual flux method: cut broken bags, heating, pumping gas and injected gas chromatograph to detect. If the total content of residual flux more than 10 mg / ㎡, leads to is faulty, if not will not smell the smell.
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