Patent ID: 7288313

Claim:
A laminated material, comprising: a substrate made of a plastic material; a first thin deposition layer made of inorganic material, formed on said substrate; a gas-barrier intermediate layer formed in contact with said first thin deposition layer by coating with a coating agent containing at least a water-soluble polymer; and a second thin deposition layer made of inorganic material, deposited directly on said intermediate layer, wherein said intermediate layer is obtained by coating with a coating agent containing primarily a water-soluble polymer and one of an aqueous solution or a water-alcohol solution mixture each containing at least one of i) not less than one type of a metal alkoxide and a hydrolyzed product thereof, or ii) tin chloride, and wherein said intermediate layer has a thickness of 200 to 600 nm, and each of the first thin deposition layer and the second thin deposition layer has a thickness of 5 to 40 nm.