Gas barrier laminated body
AssigneeToyobo Co., Ltd.
InventorsMitsuhiro Kashiwa, Yukihiro Numata, Kiyoshi Iseki
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Abstract
An object to be achieved by the present invention is to provide a gas barrier film having excellent acid resistance, transparency, and gas barrier properties. The gas barrier laminated body of the present invention is a laminate, in which an inorganic thin-film layer is laminated onto at least one of surfaces of a polymer substrate, and the inorganic thin-film layer mainly contains Al and Si, and a ratio of an Al content amount between before and after treatment of immersing the laminate into aqueous solution of hydrochloric acid that has concentration of 1 mol/L for one hour satisfies a formula of (Al Content Amount After Treatment)/(Al Content Amount Before Treatment)×100≥75.
Claims1
A gas barrier laminated body, comprising a polymer substrate and an inorganic thin-film layer laminated onto at least one surface of the polymer substrate,
- wherein the inorganic thin-film layer contains Al and Si, and a ratio of an Al content amount in the inorganic thin-film layer between before and after treatment of immersing the laminate into aqueous solution of hydrochloric acid that has concentration of 1 mol/L for one hour, satisfies Formula 1:
- (Al Content Amount After Treatment)/(Al Content Amount Before Treatment)×100≥75, and
- wherein the inorganic thin-film layer is a vapor-deposited thin-film layer that is made of composite oxide containing Al and Si.
Dependencies are inferred from the claim text.