The reasons for air leakage in food packaging bags are as follows: firstly, the bacteria in the food packaging bags will produce gas, which will cause the bags to swell. Therefore, the products should be sterilized thoroughly before leaving the factory.

食品包装袋漏气的原因二、密封性不够。食物在装袋后，要做的一道工序就是要对包装袋进行热压封合，而这一道工序的质量凹凸会直接影响食物真空包装袋的密封功用 。

The second reason of air leakage in food packaging bag is that the sealing property is not enough. After food is bagged, the first process to be done is to seal the packaging bag by hot pressing, and the quality of this process will directly affect the sealing function of food vacuum packaging bag.

假定毕竟封边不严也会导致食物真空包装袋漏气，空气从食品包装袋漏气部位渗透进入真空包装袋。

It is assumed that, after all, loose edge sealing will also lead to air leakage in the food vacuum packaging bag, and air will penetrate into the vacuum packaging bag from the air leakage part of the food packaging bag.

如果是这种原因造成的漏气，可以通过查看的办法及时发现并控制包装质量。如检查食品包装袋密封是否完好，在查验过程中是否有气泡从食物真空包装袋封边处漏出。

If it is the air leakage caused by this reason, we can timely find and control the packaging quality by checking. For example, check whether the food packaging bag is in good condition, and whether there are bubbles leaking from the sealing edge of the food vacuum packaging bag during the inspection process.