GAS BARRIER FILM HAVING EXCELLENT WEATHER RESISTANCE
First Claim
1. A gas barrier film comprising a substrate film, a weather-resistant coating layer formed on at least one surface thereof, and an inorganic thin film layer formed on the surface of the coating layer, wherein the weather-resistant coating layer is selected from (1) a weather-resistant coating layer that contains an acrylic copolymer having at least one group selected from a UV-stabilizing group, a UV-absorbing group and a cycloalkyl group, (2) a weather-resistant coating layer formed by crosslinking a polycaprolactone-polyol and/or a polycarbonate-polyol as the essential ingredient, and (3) a weather-resistant coating layer formed by crosslinking a modified polyvinyl alcohol.
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Abstract
Provided is a weather-resistant gas barrier film capable of keeping a high delamination strength and an excellent gas barrier property in a high-temperature high-humidity environment and in a UV radiation environment.
The gas barrier film comprises a substrate film, a weather-resistant coating layer formed on at least one surface thereof, and an inorganic thin film layer formed on the surface of the coating layer, wherein the weather-resistant coating layer is selected from (1) a weather-resistant coating layer that contains an acrylic copolymer having at least one group selected from a UV-stabilizing group, a UV-absorbing group and a cycloalkyl group, (2) a weather-resistant coating layer formed by crosslinking a polycaprolactone-polyol and/or a polycarbonate-polyol as the essential ingredient, and (3) a weather-resistant coating layer formed by crosslinking a modified polyvinyl alcohol; and also provided is a method for producing the gas barrier film.
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Citations
18 Claims
- 1. A gas barrier film comprising a substrate film, a weather-resistant coating layer formed on at least one surface thereof, and an inorganic thin film layer formed on the surface of the coating layer, wherein the weather-resistant coating layer is selected from (1) a weather-resistant coating layer that contains an acrylic copolymer having at least one group selected from a UV-stabilizing group, a UV-absorbing group and a cycloalkyl group, (2) a weather-resistant coating layer formed by crosslinking a polycaprolactone-polyol and/or a polycarbonate-polyol as the essential ingredient, and (3) a weather-resistant coating layer formed by crosslinking a modified polyvinyl alcohol.
- 16. A method for producing a gas barrier film comprising forming a weather-resistant coating layer on at least one surface of a substrate film followed by forming an inorganic thin film on the surface of the coating layer, wherein an acrylic copolymer produced through copolymerization with at least one selected from a group consisting of a polymerizing UV-stabilizing monomer, a polymerizing UV-absorbing monomer and a cycloalkyl(meth)acrylate is used for the weather-resistant coating layer.
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18. A method for enhancing the weather resistance of a gas barrier film comprising a substrate film, a coating layer formed on at least one surface thereof, and an inorganic thin film formed on the surface of the coating layer, wherein an acrylic copolymer having at least one group selected from a UV-stabilizing group, a UV-absorbing group and a cycloalkyl group is used for the coating layer.
Specification