Dark-patterned fully-polished surface ceramic product and preparation method thereof

Abstract

The invention provides a dark-patterned fully-polished surface ceramic product. The product sequentially comprises a blank layer, a ground glaze layer, a spray printing pattern layer 50%-100% patternarea of which has a gray value of not less than 60% under a CMYK (Cyan, Magenta, Yellow and Black) color mode, and a dry granular glaze layer with a flat mirror surface from top to bottom. The ceramic product with the flat mirror surface after surface polishing is prepared by using the optimal ratio and the innovative process method of wet-spraying dry granular glazes, and the production problemthat the dark-patterned plate surface of the fully-polished glazed product produced in the industry is unlikely to have high superior product rate because of a large usage amount of ink is solved.

Description

technical field [0001] The invention relates to the field of building ceramic tiles, in particular to a ceramic product with a dark pattern and a fully polished surface and a preparation method thereof. Background technique [0002] In the decoration of modern buildings, the top-ranking decorative materials are none other than high-grade natural stones with natural patterns and shapes, especially high-grade marbles with fine and attractive textures. However, as people pay more attention to mine resources and environmental protection, in building decoration, people hope to choose environmentally friendly and non-radioactive materials that are in line with the development trend of low-carbon green economy in modern society, and can have a beautiful and durable decoration for home decoration. Permanent decorative materials, especially ceramic tile products fired at high temperature. [0003] At this stage, ceramic tile products with digital printing patterns of full throw type...

AI Technical Summary

Problems solved by technology

[0005] 1. Adopt the method of directly printing colored glazes on the screen to form patterns. The screen process requires manual addition of flower glazes, wiping the screen, etc., and the degree of automation is low. In addition, color differences will occur after the scraper and flower screen are worn, and the production stability is poor. The screen pattern is single, the decoration effect is dull, and there are many process control links, the production efficiency is low, and it does not conform to the general trend of intelligent production development.

[0006] 2. Adopt the technical scheme of combining glaze sprinkling and spray printing pattern with sand, enamel, additives, etc., if producing dark pattern texture, because of its deep color and large gray scale of ink, so spray printing The amount of ink is also larger than that of light-colored patterns, and the large amount of ink will inevitably cause uneven combination between the inherent oil properties of the ink and the water properties of the glaze, which will cause ink discharge, and because the surface transparent glaze is All kinds of sand and stone are prepared after refining and processing. They are mainly raw materials, which contain a lot of impurities and organic matter. Excessive ink and these glazes are easy to react when firing in the kiln, resulting in bubbles, Pore ​​phenomenon, the surface is foggy, so this method is difficult to produce dark-color textured spray-printed ceramic tile products with high yield rate

[0007] 3. The pre-configured formula is first melted in a high-temperature furnace at 1400 ° C to 1800 ° C to make frits and then broken into dry granules with different meshes and particle gradations. The dry method is used as the surface material of the product. The dry granules of this process are processed after high-temperature firing. They are clinkers. During the high-temperature melting process, the organic matter in the material has been fully burned. , so this kind of clinker is the best choice as the surface transparent material layer, but due to the unevenness and instability of the dry method, it is easy to cause defects such as uneven density and unevenness on the surface of the product. In the process, it will enter the kiln and be easily sucked and blown away by the air duct, forming surface defects. On the one hand, the thickness of the dry particle layer is increased and then polished, but the increase in the amount of dry particles is more likely to be sucked and blown away. There are more defects. On the other hand, it is more difficult to exhaust and defoam in the high-temperature molten state during firing, and it is easier to produce pinholes and bubbles. The matching of the firing curve of the ink base glaze body is difficult, resulting in many defects on the surface such as wavy lines, pores, opacity, etc., and the high-quality rate is not high, so there is also a process plan for the surface production of dry-grained cloth paving bricks limitation

[0008] 4. In the prior art, there are also process schemes that use surface wet spraying or drenching dry particles, but they are all used in the conventional ceramic antique brick process with a non-full polished mirror surface. The surface is sprayed and sprinkled with single or multi-color or Dry grain layers with different melting points and temperatures. These dry grain materials produce the uneven surface texture effect that antique bricks need to express. These process schemes cannot produce a mirror-like surface effect.

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