Patent ID: 8758889

Claim:
A gas barrier film comprising a substrate film, an organic layer and an inorganic layer in that order, and the inorganic layer being provided directly on the surface of the organic layer, wherein the inorganic layer is an aluminum oxide layer and has a thickness of 50 to 400 nm; wherein the organic layer laid under the inorganic layer has a thickness of 5 μm to 10 μm; the organic layer laid under the inorganic layer has a hardness, measured by the nanoindentation, of 0.03 GPa to 0.5 GPa; and the organic layer laid under the inorganic layer, assumed to have a thickness “a”, and the inorganic layer on the organic layer, assumed to have a thickness “b”, satisfies a relation of a/b>30, wherein the organic layer laid under the inorganic layer is obtained by curing a polymerizable composition which contains a (meth)acrylate-base compound expressed by the following formula (1): wherein Z 1 represents an Ac 2 —O—X 2 — or hydrogen atom; Z 2 represents an Ac 3 —O—X 3 — or hydrogen atom; each of Ac 1 , Ac 2 and Ac 3 independently represents an acryloyl group or a methacryloyl group; and each of X 1 , X 2 and X 3 independently represents an alkylene group, an alkyleneoxy group, an alkyleneoxycarbonyl group, an alkylenecarbonyloxy group, or a group of a combination of these groups; and the organic layer laid under the inorganic layer has a glass transition temperature of 100° C. or below.