
For food, food packaging bags shoulders a variety of responsibilities such
as shell protection, conveying information, and marketing are essential for
food. We all know that food has a shelf life, so is there a shelf life of food
packaging bags? The answer is yes. The food packaging bag also has a storage
period. After the storage period is exceeded, the re -inspection must be passed
before it can be used.
Under normal circumstances, the storage period of food packaging bags has a
lot to do with the material of the packaging bag. The storage period of aluminum
foil and PE film blowing is longer, both of which are two years. After the
rehabilitation is qualified, it can be used for another year. PE, PET, PP's
packaging bag storage period is 1 year. After the re -inspection is qualified,
it can be used for half a year. The storage time of the packaging bags made of
BOPP and CPP is relatively short. It is half a year. After the re -inspection is
qualified, it can be used for another 4 months.
At the same time, it is important to note that plastic, aluminum foil and
other materials will change due to environmental impacts, and the crispyness,
hardness, and storage period will change. The storage conditions are as
follows:
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