Some snacks need to add gas to achieve long-term freshness, and food packaging machines need to add nitrogen for long-term freshness, so many times we need to do this.

The aeration function is an optional feature on all vacuum equipment and can be connected to a nitrogen generator to achieve it. So it is no longer a secret to increase the inflatable function. Most of the optional functions of the vacuum packaging machine can be added with aeration function, with a long sealing line, double-sided heating, and easy operation.

Snack foods are filled with sing gas，such as, nitrogen, carbon dioxide, oxygen or a mixture of two or three gases. Nitrogen is an inert gas, which maintains a positive pressure when filling the bag, which can prevent food from compressing, breaking and deforming. Nitrogen is to inhibit the growth of anaerobic bacteria and maintain the fresh color of fruits and vegetables. High concentration of oxygen can keep fresh meats bright . Products like bread and potato chips are done like this. Nitrogen is added to keep it fresh. The gas added to potato chips and fries can be kept fresh and can protect the potato chips and fries inside from crushing.