MAP or Modified Atmosphere Packaging is a widely used technique of preservation when it comes to food packaging. MAP technology like that in a tray sealing machine is gaining more and more popularity as a method of preserving freshness and lengthening the shelf life of fresh foods - fruits, vegetables, meat, dairy products and more. It is a notable method of preventing spoilage and extending the shelf life of various food products. So what is MAP technology? Atmospheric air is a combination of 3 elements - N2 (79%), O2 (20.96%), CO2 (0.04%) and traces of inert gases and vapour. MAP packaging, sometimes known as controlled atmosphere packaging, is the method of modifying the makeup of the internal atmosphere of a package using a modified atmosphere packaging machine - usually food packages and medicines - in order to improve the shelf life of the packed products.