FLOAT GLASS FOR CHEMICAL STRENGTHENING
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United States of America Patent
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Nov 14, 2016
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Jul 1, 2011
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Abstract
A float glass for chemical strengthening, having a bottom surface to contact a molten metal during molding and a top surface facing the bottom surface. An absolute value of a difference between a normalized hydrogen concentration at a depth of 5 to 10 μm that is a value obtained by dividing a hydrogen concentration at a depth of 5 to 10 μm by a hydrogen concentration at a depth of 50 to 55 μm in the top surface and the normalized hydrogen concentration at a depth of 5 to 10 μm in the bottom surface is 0.35 or less.
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