Patent ID: 9340448
Filing Date: 2016-05-17
CPC Classification: C03C,C09D,Y10T

Claim Text:
1. A method of producing a substrate having a frosted appearance, the method comprising: applying a frost-imparting composition containing at least one gas releasing material onto a ceramic substrate to receive form a coated substrate, wherein the composition comprises a liquid vehicle, 20% by weight to 90% by weight of glass frit particles and less than 10% by weight of the at least one gas releasing material, inactive below an activation temperature of at least 400° C., the gas releasing material comprising at least one of carbonate, bicarbonate, nitrate, nitrite, iodate, periodate, bromate, perbromate, fluoride, manganate, dimanganate, permanganate, hypomanganate, chromate, dichromate, sulfate, sulfite, dithionite, thiosulfate, cyanate, and thiocyanate compound; and firing the coated substrate at a firing temperature of above 400° C., wherein the firing temperature is chosen to be above the activation temperature of the gas-releasing material, above which the gas-releasing material yields gas bubbles and above a temperature that causes the glass frit particles to behave as a viscous liquid; and removing, by a scrubbing process, a powdered layer that is formed on the substrate during the firing to produce the frosted appearance of the substrate.