Gas-Barrier Laminate
First Claim
1. A gas-barrier laminate comprising a plastic substrate, an inorganic thin film formed on at least one surface of the plastic substrate, and a coating layer formed by applying a coating material on a surface of the inorganic thin film, said coating layer containing a polyester-based resin having a molecular weight of 3000 to 15000 and a polyurethane-based resin shaving a molecular weight of 8000 to 30000 at a weight ratio of 5/95 to 95/5, and said gas-barrier laminate having an oxygen permeability of not more than 25 fmol/m2/s/Pa.
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Accused Products
Abstract
A gas-barrier laminate with a plastic substrate, an inorganic thin film formed on at least one surface of the plastic substrate, and a coating layer formed by applying a coating material on a surface of the inorganic thin film, wherein said coating layer contains a polyester-based resin having a molecular weight of 3000 to 15000 and a polyurethane-based resin having a molecular weight of 8000 to 30000 at a weight ratio of 5/95 to 95/5, and said gas-barrier laminate has an oxygen permeability of not more than 25 fmol/m2/s/Pa; and a gas-barrier laminate comprising a plastic substrate, an inorganic thin film formed on at least one surface of the plastic substrate, and a coating layer formed by applying a coating material on a surface of the inorganic thin film, wherein the gas-barrier laminate exhibits an oxygen permeability of not more than 50 fmol/m2/s/Pa as measured with respect to a gas-barrier film obtained by laminating an unstretched polypropylene film having a thickness of 60 μm on the coating layer of the gas-barrier laminate after subjecting the gas-barrier film to hydrothermal treatment at 120° C. for 30 min, and the coating layer has either a hardness of 0.1 to 0.5 GPa as measured at 23° C. in atmospheric air by a nano-indentation hardness testing method, a hardness of 0.03 to 0.5 GPa as measured at 23° C. in water by a nano-indentation hardness testing method, or a ratio of number of carbon atoms derived from carboxyl groups to number of carbon atoms constituting the surface of the coating layer of 0.005 to 0.1.
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Citations
23 Claims
- 1. A gas-barrier laminate comprising a plastic substrate, an inorganic thin film formed on at least one surface of the plastic substrate, and a coating layer formed by applying a coating material on a surface of the inorganic thin film, said coating layer containing a polyester-based resin having a molecular weight of 3000 to 15000 and a polyurethane-based resin shaving a molecular weight of 8000 to 30000 at a weight ratio of 5/95 to 95/5, and said gas-barrier laminate having an oxygen permeability of not more than 25 fmol/m2/s/Pa.
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8. A gas-barrier laminate comprising a plastic substrate, an inorganic thin film formed on at least one surface of the plastic substrate, and a coating layer formed on a surface of the inorganic thin film, said coating layer having a hardness of 0.1 to 0.5 GPa as measured at 23°
- C. in atmospheric air by a nano-indentation hardness testing method, and the gas-barrier laminate exhibiting an oxygen permeability of not more than 50 fmol/m2/s/Pa as measured with respect to a gas-barrier film obtained by laminating an unstretched polypropylene film having a thickness of 60 μ
m on the coating layer of the gas-barrier laminate after subjecting the gas-barrier film to hydrothermal treatment at 120°
C. for 30 min. - View Dependent Claims (11, 12, 13)
- C. in atmospheric air by a nano-indentation hardness testing method, and the gas-barrier laminate exhibiting an oxygen permeability of not more than 50 fmol/m2/s/Pa as measured with respect to a gas-barrier film obtained by laminating an unstretched polypropylene film having a thickness of 60 μ
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9. A gas-barrier laminate comprising a plastic substrate, an inorganic thin film formed on at least one surface of the plastic substrate, and a coating layer formed on a surface of the inorganic thin film, said coating layer Shaving a hardness of 0.03 to 0.5 GPa as measured at 23°
- C. in water by a nano-indentation hardness testing method, and the gas-barrier laminate exhibiting an oxygen permeability of not more than 50 fmol/m2/s/Pa as measured with respect to a gas-barrier film obtained by laminating an unstretched polypropylene film having a thickness of 60 μ
m on the coating layer of the gas-barrier laminate after subjecting the gas-barrier film to hydrothermal treatment at 120°
C. for 30 min.
- C. in water by a nano-indentation hardness testing method, and the gas-barrier laminate exhibiting an oxygen permeability of not more than 50 fmol/m2/s/Pa as measured with respect to a gas-barrier film obtained by laminating an unstretched polypropylene film having a thickness of 60 μ
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10. A gas-barrier laminate comprising a plastic substrate, an inorganic thin film formed on at least one surface of the plastic substrate, and a coating layer formed on a surface of the inorganic thin film, said coating layer having a ratio of number of carbon atoms derived from carboxyl groups to number of carbon atoms constituting the surface of the coating layer of 0.005 to 0.1, and the gas-barrier laminate exhibiting an oxygen permeability of not more than 50 fmol/m2/s/Pa as measured with respect to a gas-barrier film obtained by laminating an unstretched polypropylene film having a thickness of 60 μ
- m on the coating layer of the gas-barrier laminate after subjecting the gas-barrier film to hydrothermal treatment at 120°
C. for 30 min.
- m on the coating layer of the gas-barrier laminate after subjecting the gas-barrier film to hydrothermal treatment at 120°
Specification