U.S. researchers put a layer of plastic film containing a chemical called Ammosorb in the food packaging bag to remove oxygen from the package so that the packaged food can not deteriorate for a long time. The chemical substance is in a dormant state until it is irradiated with special light waves. Chemical effects begin to appear when exposed to special light waves. This means that in the packaging of foods, there is no need for complicated deoxygenation treatment, as long as it is irradiated with special light waves in the final process of food packaging.
Source: "Global Flexible Packaging Industry"
