Vacuum nitrogen filling means that the air in the milk powder tank is exhausted first, and nitrogen are filled into it at the same time. In this way, the residual oxygen in the milk powder tank is less than 3%. After preventing the milk powder from contacting with the air, it can also keep the original taste of the milk powder and achieve effective preservation.

However, if the nitrogen-filled packaging is filled with nitrogen in a non-vacuum natural state, the residual oxygen will be greater than 10%, and the milk powder is more likely to be contaminated by bacteria attached to the air, and the milk powder will deteriorate.

So the most effective way to prevent oxidative damage to food is to remove oxygen and replace it with an inert gas to maintain the freshness, integrity, and quality of delivered food products.

Automatic vacuum nitrogen flushing gas  can sealing machine suitable for all kinds of round opening tinplate cans, plastic cans, ideal for food, beverage, pharmaceutical, and other industries.