Technique to extend the useful life and to offer a greater protection of your product.
Why and for what to use the gas injection?
Once the vacuum process is complete, the bag is ready for sealing. Gas can be injected before this. This technique is called MAP (packaging with protective atmosphere). This process is mainly carried out to increase the useful life of the product, provide greater protection and / or prevent the product from losing color. Normally is used a mixture of nitrogen (N2) and carbon dioxide (CO2). Oxygen (O2) can also be added to this combination. Lately, the use of argon (Ar) gas has increased, since it contains the same properties as nitrogen (N2).
Some examples of products where gas injection is useful are: cut lettuce, salad leaves, minced meat, steaks, cooked fish, pre-cooked products, potatoes and ready-to-use products. The proper gas mixture depends on the product. Your gas distributor can offer you better information regarding the optimal composition. A special pump for oxygen (O2) is available for gas mixtures of more than 20% oxygen (O2).