At present, there are many names for inflatable packaging, such as nitrogen-filled packaging and modified atmosphere packaging. These all use a method called gas replacement to achieve the effect of food insurance. Food is very afraid of too much oxygen exposure, and prolonged exposure to oxygen may cause problems such as oxidative deterioration. Filling the package with a certain amount of inert gas will effectively extend the shelf life of the food.

For example, our common potato chip packaging, most of which are filled with nitrogen N2, a package filled with gas is fat, on the one hand, it replaces the original air in the package, which effectively extends the shelf life; on the other hand, there are a lot of The support of gas can also reduce the fragmentation caused by collision during the transportation and storage of potato chips. You definitely don't want to buy potato chips that are all crumbled in it. Carbonated beverages are mostly filled with carbon dioxide gas CO2. The beverages themselves are mostly carbon dioxide. The air is replaced with CO2, which preserves the freshness of the product, ensures the taste and improves the shelf life.

In addition, some food modified atmosphere packaging is filled with a certain proportion of mixed gas, which may be O2+CO2+N2, N2+CO2, O2+CO2. This is also determined according to the needs of different companies and different customers.

However, when food manufacturers use this method to keep food fresh, they need to strictly control the proportion of the gas you fill in. This is directly related to the taste, quality and shelf life of your food. For now, the country has no specific standards for gas detection in packaging, but companies can set a corporate standard according to their own circumstances.