Why food packaging bags produce peculiar smell

There are several forms of peculiar smell produced by food packaging bags;one is the various additives of the resin itself and its own low-molecular-weight substances ;the second is the peculiar smell generated in film processing;the third is the peculiar smell in the processing of flexible packaging;the fourth is the peculiar smell in storage.

Reasons for occurrence:1. “The peculiar smell in the processing of flexible packaging” refers to the smell of residual solvents or monomers in the ink,adhesive,and solvent used in the production of bags.2. “The peculiar smell generated during storage” means that the product is placed in an odorous environment for a long time,and irritating molecules will be adsorbed on the surface to cause some special taste.The same is true in transit.The storage temperature should be lower than 35 degrees,otherwise the low-molecular-weight substances will migrate out quickly,causing the taste to increase.

The source of the peculiar smell when the packaged food is opened can also be divided into three situations.One is that the content itself has undergone significant deterioration,and its appearance and taste have undergone significant changes.The kind of situation is more common in the packaging products of cooked food;second,the packaging bag itself has peculiar smell,this kind of situation is common in the price comparison of types of dry food packaging.The third situation is that the above two situations occur at the same time,that is,not only the peculiar smell of the bag has undergone a certain degree of deterioration.Whether the packaged food has deteriorated,I believe consumers will have their own judgment.