| abstract |
The present invention discloses a packaging barrier stack capable of packaging items sensitive to moisture and / or oxygen and comprising a multilayer film, wherein the multilayer film comprises:-one or more barrier layers, which have low moisture and / or oxygen permeability, And-one or more sealing layers configured to contact a surface of one of the at least one barrier layer, thereby covering defects present in the barrier layer, wherein the one or more sealing layers include a plurality of dendritic layers Nano-particles that are encapsulated in the body, which are reactive because they can interact with moisture and / or oxygen to prevent moisture and / or oxygen from passing through the defects existing in the barrier layer penetration. |