To extend the shelf life of aluminum foil bags, here are some tips.

　　1. Temperature

　　Temperature change will affect the performance of aluminum foil bag. Too high or too low temperature, or sudden temperature change will lead to poor performance of aluminum foil bag. Therefore, the finished aluminum foil bags should be placed in the place where the temperature is concerned, with proper ventilation in summer and proper insulation in winter, so as to ensure that the aluminum foil bags are in an environment where the temperature difference is not large. Do not put them in a place where the sun can directly shine, because severe ultraviolet radiation will accelerate the aging of the packaging bags. In addition, when summer comes, indoor walls will appear because of moisture, and aluminum foil bags will also appear. When storing the aluminum foil bag, do not let the aluminum foil bag cling to the wall, and leave it about 1cm away to avoid moisture.

　　2. Humidity

　　Humidity in the air also affects the function of the foil bag. In a humid environment, the air is not circulating, which is easy to breed bacteria, causing the aluminum foil bag to smell. It will also accelerate the aging of aluminum foil bags, resulting in the decrease of material flexibility, increase of brittleness and easier damage. Therefore, the aluminum foil bag should be stored in a dry and ventilated environment to avoid rain.

　　Finally, even if the aluminum foil bag is properly stored, it will naturally age and degrade its performance. It also has a certain shelf life. Therefore, aluminum foil bags that have not been used for a long time should be carefully checked before use, including whether there are cracks, delamination, odor, and good physical properties, so as to ensure that the bags put into the market are qualified.

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