What should I pay attention to in food plastic bags in cold weather?

In cold and dry places, food plastic bags have poor low temperature resistance, so pay attention to whether there is cracking and delamination.

Because food packaging bags are mostly of composite film structure, the inner materials are mostly CPP, VMCPP and PE, among which CPP and VMCPP have worse low temperature resistance than PE, and are easy to crack and delaminate in low temperature and dry environment. It is suggested that it is best to choose materials with good low temperature resistance, which can effectively avoid the above phenomenon. For example, PE, PET and PA are all materials with good low temperature resistance.