How To Use a Gas Flush Vacuum Sealer To Extend Product Shelf Life

Gas flush vacuum sealers are the perfect way to increase storage life without chemicals. Many products packaged with gas flush are consumable, but metals and other items are also preserved with gas flush packaging.
It can be challenging to understand how the gas flushing process works; even watching a video can not fully explain what happens. The description and images below are to show how a gas flush vacuum sealer helps to preserve and protect products.

Gas flush vacuum sealing is a form of modified atmosphere packaging, also known as MAP. By changing the atmosphere around the packaged product, shelf life can be increased, and waste can be reduced.

One of the most common gases used for gas flush vacuum sealing is nitrogen. Nitrogen is the perfect non-reactive element for use in modified atmosphere packaging. Nitrogen molecules are larger than oxygen and force the oxygen out of the packaging container. The reduction or elimination of oxygen in packaging helps to extend the life of consumable products. The absence of oxygen also helps to prevent rust on metal tools and parts. Nitrogen is one of the most abundant elements in our atmosphere. It makes up over 79% of the air we breathe. Using nitrogen to force out oxygen eliminates the need for chemical preservatives. With proper storage climates, foods will last much longer.

The use of a barrier bag is essential when using a gas flush vacuum sealer. A barrier bag will retain a vacuum and prevent oxygen from entering the sealed container. With a barrier bag over the vacuum nozzle, the gas flushes into the bag pushing smaller oxygen particles out. 

After a set flush time, the gas used to flush can be removed from the bag or remain similar to a potato chip bag. Vacuuming the remaining gas creates a tightly fitting package. Leaving gas in the package is ideal for fragile products that may crush if a vacuum is applied. Once an air-tight seal is complete, the products are fully enclosed. Most seals for vacuum packaging are at least a quarter-inch to one-half-inch thick. The thicker seals help to ensure an air-tight enclosure.

The sealed package is protected from exterior elements while preserving products inside.

For more information about gas flush vacuum packaging, call 1-800-441-5090, and our sales team will be happy to assist.