Method for coating a moving glass substrate
First Claim
1. A method of coating a moving substrate to provide a coating having a continuously varying chemical composition as the distance from the substrate increases, comprising the steps of:
- directing a vapor coating composition onto the surface of the substrate at a first position;
thereafter moving a first portion of the vapor coating composition along a first region of the substrate surface in a first direction and a second portion of the vapor coating composition along a second region of the substrate surface in a second direction opposite to the first direction, andmaintaining the first portion of the coating composition on the first region of the substrate surface for a longer period of time than the second portion of the vapor coating composition on the second region of the substrate surface in order to coat the substrate with the coating having the continuously varying chemical composition as the distance from the substrate increases.
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Accused Products
Abstract
A method for coating a moving substrate provides a coating having a chemical composition which varies continuously from the interface with the substrate to the opposite surface of the coating. The method involves directing a vapor coating composition toward a substrate surface and moving portions of the vapor in opposite directions. A vapor coating mixture may include a tin-containing precursor and a silicon-containing precursor. An accelerant, e.g. a phosphorus-containing precursor, may be used with the metal-containing precursors to increase the deposition rate of the coating. The coating deposited on the substrate has regions of continuously varying weight percent of silicon oxide and tin oxide as the distance from the substrate-coating interface increases, with the surface of the coating farthest from the substrate-coating interface being predominantly tin oxide. The regions of varying composition provide the coating with varying indices of refraction to eliminate iridescence to provide a coated article, particularly a tin oxide coated glass article, with a neutral color.
75 Citations
20 Claims
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1. A method of coating a moving substrate to provide a coating having a continuously varying chemical composition as the distance from the substrate increases, comprising the steps of:
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directing a vapor coating composition onto the surface of the substrate at a first position; thereafter moving a first portion of the vapor coating composition along a first region of the substrate surface in a first direction and a second portion of the vapor coating composition along a second region of the substrate surface in a second direction opposite to the first direction, and maintaining the first portion of the coating composition on the first region of the substrate surface for a longer period of time than the second portion of the vapor coating composition on the second region of the substrate surface in order to coat the substrate with the coating having the continuously varying chemical composition as the distance from the substrate increases. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification