GAS BARRIER MATERIAL

摘要

A gas barrier laminate obtained by forming a film of a metal compound selected from the group consisting of metal oxides, metal carbides, metal nitrides, and mixtures thereof on a substrate film, subjecting the obtained laminate to thermal treatment, and then forming a plastic film on the metallic film, which exhibits an oxygen permeability of 2cc/m2/day/atm or below and is reduced in oxygen permeability change to 5 or below as found after hot water treatment under the conditions of 120 °C and 30 min (wherein the oxygen permeability change is expressed in terms of the ratio of oxygen permeability after the treatment to oxygen permeability before the treatment).