A glazed ceramic tile comprising a protective glaze layer and its manufacturing method

Abstract

The invention provides an enameled tile with a protection enamel layer. The enameled tile comprises a tile body and the protection enamel layer covering the surface of the tile body, wherein the protection enamel layer comprises a plastic film layer, a transition layer and a transparent clinker frit enamel layer from bottom to top; the plastic film layer is a tannic acid aqueous solution with mass percentage concentration of 1-10%, and the transition layer is transparent raw-material enamel slip with a specific gravity smaller than 1.20g / cm3. The invention also provides a manufacturing method of the enameled tile with the protection enamel layer. The manufacturing method comprises the following steps: (A) a green blank is coated with ground coat; (B) a pattern is printed on the tile body; (C) a spiral glazing machine sprays enamel slip to the surface of the tile body to form the protection enamel layer; (D) polishing is conducted after calcination. The method is easy to operate, saves labor, is not limited to specifications of products, does not influence design or colors of the products and can guarantee that the printed pattern is clear.

Description

technical field [0001] The invention relates to a glazed tile and a manufacturing method thereof, in particular to a glazed tile including a protective glaze layer and a manufacturing method thereof. Background technique [0002] Polished glazed tiles with realistic patterns and bright glazes have been popular in the market for a period of time due to their luxurious decorative effects. However, the production process of the products has not been perfected. Among them, blurred printing patterns and glaze surface defects have always been difficult to solve in the ceramic industry. . [0003] At present, in the production of polished glazed tiles in the industry, the screen printing method or the glaze method is generally used to directly put a transparent protective glaze layer with a certain thickness on the pattern. This method is difficult to control the amount of glaze applied and the effect is not good. Stable, especially for dark inkjet products and screen printing pro...

AI Technical Summary

Problems solved by technology

[0002] Polished glazed tiles with realistic patterns and bright glazes have been popular in the market for a period of time due to their luxurious decorative effects. However, the production process of the products has not been perfected. Among them, blurred printing patterns and glaze surface defects have always been difficult to solve in the ceramic industry.

[0003] At present, in the production of polished glazed tiles in the industry, the screen printing method or the glaze method is generally used to directly put a transparent protective glaze layer with a certain thickness on the pattern. This method is difficult to control the amount of glaze applied and the effect is not good. Stable, especially for dark inkjet products and screen printing products, due to the incompatibility of the transparent protective glaze with ink or flower glaze, the pattern will be blurred, and it is easy to produce concave glaze, shrinkage glaze, roll glaze and other surfaces Defects affect the qualified rate of finished products

At the same time, the above process is also affected by product specifications, such as 1000*1000mm, 800*2000 and other large-scale products, it is difficult to use the method of printing protective glaze

At present, the existing equipment for spraying glaze is a cone nozzle or a water jet nozzle. These spraying equipment cannot achieve the uniformity of a very small amount of glaze, and are also prone to blockage.

Images