1. Gas flushing Gas displacement For food and beverage products, nitrogen is often used to reduce the amount of ambient oxygen in the package, as this gas increases the rate at which the product deteriorates. Nitrogen flushing is a common method used by many customers. This can occur both inside the package itself and in the steps leading up to the package, such as inside the filling equipment. During this process, nitrogen is actively pumped in to displace oxygen.

Displace oxygen to delay oxidation

Reduce the growth of aerobic spoilage bacteria

Act as a filler to maintain packaging consistency

2. Barrier packaging film Barrier packaging film Selecting a specific packaging film that provides enhanced protection is another method of modified atmosphere packaging. This is achieved by using barrier packaging materials that block moisture and reduce oxygen permeability, such as low-density polyethylene (LDPE), polyvinyl chloride (PVC) or polypropylene (PP). New on the market are "smart" packaging films that can contain indicators such as temperature, leakage, food quality, etc.

3. Scavenger or desiccant packaging Scavenger, another example is the addition of a scavenger or desiccant packaging to the package. These small packaging bags usually contain a mixture of iron powder and ascorbic acid, and sometimes activated carbon. These ingredients act as catalysts or activators, absorbing surrounding moisture and oxygen, thereby removing it from the interior of the package that holds the perishable product.

4. Adding a degassing valve to the packaging bag is another method. These special valves can be added to the roll film during the packaging process. A one-way valve allows certain gases to escape from the package without allowing any external gases to enter. This is usually done to release the pressure created by the gas released by the product, but it can also be done to allow air to escape from the package for better stacking and palletizing.