Light-transmitting and/or coated article with removable protective coating and methods of making the same
First Claim
1. A method of protecting a substrate having at least one light transmitting surface and at least one functional coating from mechanical damage, comprising the steps of:
- providing a substrate having at least one light transmitting surface and having a surface with a functional coating over at least a portion of the surface;
depositing a liquid coating composition over at least a portion of the functional coating, the coating composition comprising a film-forming polymeric material; and
forming a removable protective coating from the coating composition with film forming material, wherein the functional coating is selected from the group consisting of single layer and multiple layer coatings, wherein the functional coating comprises a material selected from the group consisting of one or more metals, non-metals, semimetals, semiconductors, or alloys, compounds, composites, combinations, and blends thereof, wherein the removable protective coating is essentially free of particulate solid spacer material for interleaving when the functional coating is a single layer metal oxide and wherein the film-forming polymeric material comprises polyvinyl alcohol having a degree of hydrolyzation of greater than about 80 percent.
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Accused Products
Abstract
A method and coating are provided for temporarily protecting a substrate or article during shipping, handling or storage by applying a removable protective coating over at least a portion of the substrate. The substrate may be flat or curved and may have zero, one or more functional coatings. A plurality of substrates with the protective coating of the invention may be arranged in a shipping container so that the protective coating reduces the possibility of damage to the substrate or optional functional coating. In one embodiment, the protective coating is the evaporation or reaction product of an aqueous coating composition containing a polyvinyl alcohol polymer which may be subsequently removed by aqueous washing, thermal decomposition or combustion. In another embodiment, the protective coating is formed by sputtering a substantially carbon coating onto the substrate. The carbon coating is subsequently removed by combustion. The protective coating may have identification materials, such as colorants or fragrance materials, such that different types of substrates and/or functional coatings can be distinguished from each other. Additionally, the temporary protective coating can improve the heating of a functionally coated glass substrate.
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Citations
25 Claims
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1. A method of protecting a substrate having at least one light transmitting surface and at least one functional coating from mechanical damage, comprising the steps of:
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providing a substrate having at least one light transmitting surface and having a surface with a functional coating over at least a portion of the surface;
depositing a liquid coating composition over at least a portion of the functional coating, the coating composition comprising a film-forming polymeric material; and
forming a removable protective coating from the coating composition with film forming material, wherein the functional coating is selected from the group consisting of single layer and multiple layer coatings, wherein the functional coating comprises a material selected from the group consisting of one or more metals, non-metals, semimetals, semiconductors, or alloys, compounds, composites, combinations, and blends thereof, wherein the removable protective coating is essentially free of particulate solid spacer material for interleaving when the functional coating is a single layer metal oxide and wherein the film-forming polymeric material comprises polyvinyl alcohol having a degree of hydrolyzation of greater than about 80 percent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification