Food and cosmetics have higher antibacterial requirements, so the addition of non-toxic nanosilver powder to the packaging material is very effective against bacteria. In polypropylene, the incorporation of nanosilver with a size of about 100 nanometers not only does not affect the transparency of plastic containers, but also increases their antibacterial properties. PolymerWorld, located in Seoul, South Korea, mixed pure nanosilver with a pure resin material during the injection molding process to produce a new type of food packaging container that has significantly enhanced antimicrobial performance compared to other containers.

Source: Packaging Materials and Containers