Generally speaking, aluminum foil packaging bags are mainly used to extend the shelf life of products, but air leakage of aluminum foil bags is a very troublesome problem. Let’s take a look at why aluminum foil bags leak air. Causes of air leakage of aluminum foil bags 1. The shape of aluminum foil bags is irregular, and it is easily damaged by external things. Reasons for air leakage of aluminum foil bags Reasons for the leakage of aluminum foil bags 3. When vacuum pumping, the time is too long to cause excessive pumping and damage to the aluminum foil bags. Causes of air leakage of aluminum foil bags 4. Due to improper stretching of the protruding parts of aluminum foil bags, small holes appear, resulting in air leakage. The reason for the leakage of the aluminum foil bag is that during the transportation process, the aluminum foil bag is squeezed and folded for too long, resulting in air leakage. The above are the main reasons for the leakage of aluminum foil bags. food bags, food packaging bags