Gas-barrier films
AssigneeKureha Chemical Industry Co., Ltd.
InventorsHiroyuki Ohba, Hideaki Tanaka, Tomoaki Sato, Tomohisa Hasegawa, Toru Saika
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Abstract
The present invention provides a gas-barrier film which is produced through applying a layer containing a metallic compound to a surface of a processed-polymer layer produced from a mixture of a polyalcohol and at least one poly(meth)acrylic polymer selected from the group consisting of poly(meth)acrylic acids and partially neutralized poly(meth)acrylic acids. The invention also provides a laminated gas-barrier film containing the aforementioned gas-barrier film either surface of which is laminated on with a plastic film. The gas-barrier film exhibits excellent gas-barrier properties and can be produced through a simple, convenient process.
Claims19
A gas-barrier film comprising (i) a polymer layer formed of a mixture of polyalcohol and at least one poly(meth)acrylic acid polymer selected from the group consisting of poly(meth)acrylic acids and partially neutralized poly(meth)acrylic acids, and (ii) a metallic-compound-containing layer on a surface of the polymer layer, wherein the metallic-compound-containing layer exhibits a mean surface roughness (Ra) of between 0.003-0.019 μm as measured by atomic force microscope (AFM).
A gas-barrier film comprising (i) a polymer layer formed of a mixture of polyalcohol and at least one poly(meth)acrylic acid polymer selected from the group consisting of poly(meth)acrylic acids and partially neutralized poly(meth)acrylic acids, and (ii) a metallic-compound-containing layer on a surface of the polymer layer, wherein the metallic compound is oxides, hydroxides, or carbonates of at least one species of metal selected from the group consisting of magnesium, calcium, and zinc, and wherein the metallic-compound-containing layer exhibits a mean surface roughness (Ra) of between 0.003-0.03 μm as measured by atomic force microscope (AFM).
A method of making a gas-barrier film comprising applying a metallic-compound-containing material onto a surface of a polymer layer by coating, spraying, powdering, or dipping to form a metallic-compound-containing layer which exhibits a mean surface roughness (Ra) of between 0.003-003 μm as measured by atomic force microscope(AFM), wherein said polymer layer is formed of a mixture of polyalcohol and at least one poly(meth)acrylic acid polymer selected from the group consisting of poly(meth)acrylic acids and partially neutralized poly(meth)acrylic acids, and wherein the metallic compound is oxides, hydroxides, or carbonates of at least one species of metal selected from the group consisting of magnesium, calcium, and zinc.
Dependencies are inferred from the claim text.