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US 2014/0370304 A1Published application
Heavy-Metal-Free, Ion Exchangeable Glass Enamels
AssigneeFerro Corporation
InventorsEnos A. Axtell, III, George E. Sakoske
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Abstract
Heavy-metal-free glass enamels are applied to glass and fired. After firing, the coated glass can subsequently be ion exchanged to give a chemically strengthened, decorated glass article.
Claims20
A method of decorating and strengthening a glass substrate comprising:
- a. applying a glass enamel frit to a glass substrate, the substrate including at least one substrate alkali-metal ion,
- b. firing the glass substrate at a firing temperature sufficient to flow and sinter the glass enamel frit and thereby adhere it to the glass substrate,
- c. placing the substrate in a bath of a molten salt, the salt including a bath monovalent metal ion larger than the alkali-metal ion in the glass substrate,
- d. wherein the glass enamel frit has a softening point that is between the temperature of the molten bath and that of the firing temperature of the glass enamel frit.
1 more element
A method of strengthening and decorating a glass substrate comprising the steps of:
- (a) providing a glass substrate,
- (b) providing a lead-free and cadmium-free glass enamel,
- (c) coating a portion of said glass substrate with said glass enamel,
- (d) firing said coated glass substrate, and
- (e) exposing said coated glass substrate to an ion exchange bath.
2 more elements
Dependencies are inferred from the claim text.