Metallized paper-based packaging layer material, comprising at least two barrier layers made of a vinyl alcohol polymer

Abstract

A packaging layer material having a base layer made of paper, a first barrier coating assembly made of a vinyl alcohol polymer, and a second barrier coating assembly made of metal or a metal compound which is deposited onto a support surface in a vapor deposition process, the first barrier coating assembly has more than one layer made of the vinyl alcohol polymer, wherein the layers of the first barrier coating assembly are arranged directly one after the other.

Dependencies are inferred from the claim text.