White glaze, boundary-free ceramic tile containing white glaze and production method of boundary-free ceramic tile

Abstract

The invention relates to a white glaze, a boundary-free ceramic tile containing the white glaze and a production method of the boundary-free ceramic tile. The white glaze comprises, by weight percentage, 60-75% of opacifier, 15-28% of opacifying frit and 4-15% of clay. The boundary-free ceramic tile comprises a green body decoration layer, a white glaze layer, a comprehensive decoration layer anda transparent glaze or protecting glaze layer. The production method includes: using a sponge material to polish the surface of a green body; drying, and using a rubber roller to print the surface ofthe green body with the white glaze, and subjecting the white glaze to sintering of 1100-1200 DEG C to obtain the white glaze layer of the boundary-free ceramic tile, wherein the white glaze is weighed according to the formula, 45wt% of printing oil is added, ball milling is performed until the fineness of glaze slurry is smaller than 40 micrometers, the viscosity of the glaze slurry is regulatedto Engler viscosity 18-23 seconds, and glaze slurry proportion is 1.53-1.62.

Description

technical field [0001] The invention relates to the field of ceramics, in particular to a white glaze, a whole body borderless ceramic brick containing the white glaze and a preparation method thereof. Background technique [0002] In recent years, conceptual products such as full-body marble and full-body antique bricks in the architectural ceramics industry have won the favor of consumers. The whole-body products require that the surface of ceramic wall and floor tiles is basically consistent with the texture and tone of the interior of the body, so as to achieve the same appearance of ceramic tiles. One. However, in the production process of ceramic wall and floor tiles, the technical process of green body→applying make-up soil / underglaze→printing→applying transparent glaze / protective glaze is usually adopted. A layer of white glaze layer, the thickness is generally 0.2 ~ 0.4mm, after water jet cutting, chamfering, slotting and other post-processing steps, the white glaz...

AI Technical Summary

Problems solved by technology

However, in the production process of ceramic wall and floor tiles, the technical process of green body→applying make-up soil / underglaze→printing→applying transparent glaze / protective glaze is usually adopted. A layer of white glaze layer, the thickness is generally 0.2 ~ 0.4mm, after water jet cutting, chamfering, slotting and other post-processing steps, the white glaze layer in the middle forms a large contrast with the green body, showing the effect of "white line", Isolating the texture of the green body from the surface decoration layer cannot achieve the same decorative effect on the outside and inside of the ceramic, and it has become a flaw in the current conceptual product of the whole body ceramic tile

In foreign countries, in order to solve the problem of "white boundary", some ceramic tile manufacturers adopt the method of improving the formula of the green body and directly print on the green body; many domestic manufacturers and research institutions also have related research on this method, but it is limited by the raw materials of the green body. Due to factors such as characteristics, process requirements, and cost control, the direct printing process on blanks cannot achieve large-scale production in enterprises.

[0003] CN201610574716 discloses a manufacturing process for eliminating the white boundary line of colorful marble tiles and its colorful marble tiles. The pressed fabric layer is used instead of spraying make-up soil or primer, and after the fabric layer is pressed, an inkjet bleeding process is used for three-dimensional decoration. To achieve the effect of eliminating the white boundary line, in fact, subject to the influence of the uniformity of the thickness of the thin fabric and the degree of seepage and infiltration, in actual production, this process has poor stability in eliminating the white boundary line, and the pressing process is used instead of spraying glaze ,higher cost

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