Patent ID: 7713373

Claim:
A process for producing a packaging laminate material, the process for producing at least a laminate material web for a packaging container composed of a base layer and a thermally sealable inner layer, comprising the steps of: heating metallic silver to form a silver vapor atmosphere; carrying a base film web continuously or intermittently in the silver vapor atmosphere so as to form a thin film of metallic silver on a surface of the base film web when or after an oxygen-containing gas is introduced into the silver vapor atmosphere; oxidizing a part of or the entirety of the metallic silver simultaneously or subsequently into silver oxide by the oxygen-containing gas to convert into a thin film of silver oxide; drawing out the base film web provided with the thin film of silver oxide from the silver vapor atmosphere containing the oxygen-containing gas to thereby obtain a base layer web; laminating an inner face of the inside of the base layer web with a thermally sealable inner layer; printing a container design indirectly or directly on an outer face of the outside of the base layer web; and forming simultaneously or successively at least one thermoplastic layer and or support layer on the outer face and inner face of the base layer web.