1. In the natural environment, that is, under the condition of direct sunlight, the strength of food plastic packaging bags will drop by about 25% after one week, and will drop by about 40% after two weeks, and it is basically unusable. That is to say, the storage and storage of plastic bags is very important.
2. After the packaging bag is placed in the open air environment and exposed to direct sunlight, the intensity will drop sharply, so try to prevent direct sunlight.
3. Excessive participation of recycled materials is also one of the reasons for promoting the aging of plastic packaging bags.
4. If the temperature of the packaging bag is too high or it encounters rain during the storage and transportation process, its strength will decrease, and then it will not meet the quality requirements for protecting the contents of the bag, so it should be prevented from high temperature and rain erosion in peacetime.