1. Gas scouring and gas replacement are very important for the packaging of food and beverage products. Nitrogen is generally used to reduce the amount of ambient oxygen in the packaging. Since this gas will reduce the rate of product deterioration, nitrogen scouring is used by many customers Common approach. This can happen inside the packaging itself as well as in the steps leading to the packaging, for example inside the filling equipment. During this process, nitrogen is actively pumped in to replace oxygen.
2. Barrier packaging film Barrier packaging film is another method of modified atmosphere packaging by choosing a specific packaging film that provides enhanced protection. This is done by blocking moisture and oxygen permeability to prevent the packaging material from contacting the outside world, such as low-density polyethylene (LDPE), polyvinyl chloride (PVC) or polypropylene (PP). What's new on the market is "smart" packaging films, which can include targets such as temperature, leakage, and food quality.
3. Scavenger or desiccant package scavenger, another example is to add oxygen scavenger or desiccant package to the package. These small packages usually contain a mixture of iron powder and ascorbic acid, and sometimes activated charcoal. These ingredients act as catalysts or activators, absorbing surrounding moisture and oxygen, and then removing them from the packaging that contains perishable products.
4. Adding an exhaust valve on the packaging bag is another way. These special valves can be added to the roll film during the packaging process. The one-way valve only allows certain gas to escape from the package and does not allow any outside gas to enter. This is generally done to release the pressure generated by the gas in the product, but it can also be done to allow the air to escape from the package, and then better stacking and stacking.