Barrier film having high colorless transparency and method
First Claim
1. A barrier film consisting of a flexible transparent substrate having a thickness ranging from approximately 1/2 mil to 4 mils and having a surface and a thin film vacuum-deposited barrier coating formed on said surface, said barrier coating being formed as a single layer of a single material having a thickness ranging from approximately 50 to less than 200 Å
- and being formed of a dielectric material selected from the group consisting of aluminum oxide, yttrium oxide and a mixed oxide alloy consisting of 65% SiO2 and 35% MgO, said barrier coating in combination with said flexible transparent substrate forming a film having a water white high colorless transparency and being impermeable to water and oxygen.
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Accused Products
Abstract
Barrier film with a high colorless transparency comprising a flexible plastic substrate. A barrier layer is formed on the surface and has a thickness ranging from approximately 50 to 100 Angstroms and is formed of a material selected from the group of aluminum oxide, tin oxide and yttrium oxide. An additional barrier layer formed of silicon dioxide may also be formed on the barrier layer.
173 Citations
24 Claims
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1. A barrier film consisting of a flexible transparent substrate having a thickness ranging from approximately 1/2 mil to 4 mils and having a surface and a thin film vacuum-deposited barrier coating formed on said surface, said barrier coating being formed as a single layer of a single material having a thickness ranging from approximately 50 to less than 200 Å
- and being formed of a dielectric material selected from the group consisting of aluminum oxide, yttrium oxide and a mixed oxide alloy consisting of 65% SiO2 and 35% MgO, said barrier coating in combination with said flexible transparent substrate forming a film having a water white high colorless transparency and being impermeable to water and oxygen.
- View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A barrier film consisting of a flexible transparent substrate having a thickness ranging from approximately 1/2 mil to 4 mils and having a surface and a thin film vacuum-deposited barrier coating formed on said surface, said barrier coating being formed as a single layer of a single material having a thickness ranging from approximately 50 to less than 200 Å
- and being formed of a dielectric material selected from the group consisting of aluminum oxide, yttrium oxide and a mixed oxide alloy consisting of 65% SiO2 and 35% MgO, said barrier coating in combination with said flexible transparent substrate forming a film having a water white high colorless transparency and being impermeable to water and oxygen, said substrate being provided with an additional surface opposite the first named surface and a barrier coating formed on the additional surface, said barrier coating on said additional surface being formed as a single layer of a single material having a thickness ranging from approximately 50 to less than 200 Angstroms and being formed of a material selected from the group consisting of aluminum oxide, yttrium oxide and a mixed alloy consisting of 65% SiO2 and 35% MgO.
- View Dependent Claims (9, 10)
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11. A barrier film consisting of a flexible plastic substrate having a thickness ranging from approximately 1/2 mil to 4 mils and having a surface and a thin film vacuum-deposited barrier coating formed on said surface, said barrier coating being formed of a combination of at least two layers of at least two different materials having an overall thickness ranging from 300 to 600 Å
- with one of said at least two layers being a nucleation layer formed of a material selected from the group consisting of aluminum oxide, tin oxide, yttrium oxide and a mixed oxide alloy consisting of 65% SiO2 and 35% MgO, the other of said at least two layers being formed of a material selected from silicon dioxide and a mixed oxide alloy consisting of 65% SiO2 and 35% MgO, said barrier coating in combination with said flexible plastic substrate forming a barrier film having a water white high colorless transparency in the visible region and being impermeable to water and oxygen.
- View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
Specification