Illuminable enamelled substrate and its manufacture
AssigneeSaint-Gobain Glass France
InventorFlorian FLAMARY MESPOULIE
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Abstract
An enameled substrate includes a first glass sheet including, on a first main face, a scattering layer made of scattering enamel, including a glassy matrix, the layer including at least a first scattering pattern of at least 0.1 mm and a of given surface area S0, wherein the glassy matrix is glass-crystalline, thus including microcrystals in a vitreous binder, the microcrystals being scattering and wherein the first scattering pattern is discontinuous, the scattering layer includes a content by weight of coloring additives of at most 10% of the total weight of the enamel.
Claims20
An enameled substrate including a first glass sheet including, on a first main face, a scattering layer made of scattering enamel, including a glassy matrix, the scattering layer including at least a first scattering pattern of at least 0.1 mm and a of given surface area S0,
- wherein the glassy matrix is glass-crystalline, thus including microcrystals in a vitreous binder, the microcrystals being scattering and wherein the first scattering pattern is discontinuous,
- the scattering layer includes a content by weight of coloring additives of at most 10% of the total weight of the enamel.
A method for manufacturing an enameled substrate which comprises formation of a scattering layer of scattering enamel on a first main face of a first glass sheet, comprising in this order:
- depositing on the first glass sheet a film of a liquid vitrifiable composition forming an enamel paste, including a mixture of an organic medium and a glass frit with a glass transition temperature Tg1,
- firing at a temperature Tc above the glass transition temperature Tg1 of the glass frit,
- wherein the glass frit is crystallizable and the enamel paste includes growth seeds, the firing generates formation of a glass-crystalline matrix including scattering microcrystals and wherein the scattering layer is discontinuous.
Dependencies are inferred from the claim text.