Anti-counterfeiting ceramic tile and preparation method thereof

A technology for ceramic tiles and anti-counterfeiting marks, applied in the field of building ceramic products, can solve the problems of structural damage of fluorescent materials, loss of fluorescent effect, difficulty in realizing anti-counterfeiting effect, etc., and achieve the effect of strong adaptability and adaptability

Active Publication Date: 2022-01-25
MONALISA GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ceramic tiles are usually fired in an oxidizing atmosphere exceeding 1100°C. ZnO: Zn in Zn fluorescent materials is easily oxidized to ZnO during the firing process, resulting in loss of fluorescence effect
On the other hand, the phosphor layer formed by ZnO:Zn is set between two layers of transparent glaze. ZnO, as a commonly used fusible oxide in transparent glaze, is easily melted by high-temperature transparent glaze melt, and the fluorescent material is destroyed by the structure. It is difficult to achieve the expected anti-counterfeiting effect

Method used

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  • Anti-counterfeiting ceramic tile and preparation method thereof
  • Anti-counterfeiting ceramic tile and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0027] The preparation of the fluorescent material can be carried out with reference to technical documents such as existing patents or periodicals. As an example, zinc oxide, gallium oxide, and chromium chloride hexahydrate according to Zn(Ga 0.99 Cr 0.01 ) 2 o 4 The metering ratio is weighed, wet ground and mixed evenly, dried and moved into an alumina crucible, and calcined in an electric furnace at 1350°C for 3 hours to obtain chromium-doped zinc gallate.

[0028] The fluorescent slurry also includes water and sodium tripolyphosphate in addition to the fluorescent material. Wherein, water accounts for 35-40 wt% of the fluorescent material, and sodium tripolyphosphate accounts for 0.3-0.5 wt% of the fluorescent material. Put the fluorescent material in a ball mill jar, add water and sodium tripolyphosphate, and wet grind to form a uniform slurry. The fluorescent paste may also include water-based printing paste to increase the viscosity and slipperiness of the fluoresc...

Embodiment 1

[0050] The preparation method of the anti-counterfeiting ceramic tile based on chromium-doped zinc gallate comprises the following steps:

[0051] Step 1: using green body powder to prepare green body;

[0052] Step 2: Dry the green body; the drying temperature is 160°C, and the drying time is 50 minutes;

[0053] Step 3: Put the chromium-doped zinc gallate fluorescent material in a ball mill tank, add 35wt% water and 0.3wt% sodium tripolyphosphate, and mill for 10 minutes to form a uniform slurry; add water-based printing paste to the uniform slurry, and stir evenly Adjusted to a specific gravity of 1.6g / cm 3 Fluorescent slurry; the anti-counterfeiting mark is made into a 100-mesh screen, and the fluorescent slurry is applied to the surface of the dry ceramic body by screen printing to form a ceramic body printed with the anti-counterfeiting mark;

[0054] Step 4: Spray the bottom glaze on the ceramic body printed with the anti-counterfeiting mark; the chemical composition ...

Embodiment 2

[0061] It is basically the same as Embodiment 1, the only difference is that the color tone of the inkjet pattern texture is replaced by white.

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Abstract

The invention discloses an anti-counterfeiting ceramic tile and a preparation method thereof. The preparation method comprises the following steps: applying fluorescent slurry containing a fluorescent material to the surface of a green body through silk-screen printing to form a ceramic green body printed with an anti-counterfeiting mark; applying ground glaze on the ceramic body printed with the anti-counterfeiting mark; decorating patterns on the surface of the green body after the ground glaze is applied; applying transparent glaze on the surface of the green body decorated with the patterns; and firing the green body with the transparent glaze to obtain the anti-counterfeiting ceramic tile. The anti-counterfeiting ceramic tile obtained by the method can realize hidden anti-counterfeiting. The anti-counterfeiting mark does not influence the surface decoration of the ceramic tile, and the anti-counterfeiting mark with the corresponding color can be shown by irradiation with purple light in a darkroom.

Description

technical field [0001] The invention belongs to the field of architectural ceramic products, and in particular relates to an anti-counterfeiting ceramic tile and a preparation method thereof. Background technique [0002] With the rapid development of the building ceramics industry, the output of my country's ceramic tiles has risen sharply, but this is also accompanied by the serious problem of product homogeneity in the building ceramics industry. Some unscrupulous manufacturers imitate the product colors and subscripts of brand enterprises to grab improper benefits, which hinders the progress of the industry and the protection of technological innovation of brand enterprises. In this regard, the ceramic industry develops related hidden anti-counterfeiting technologies. [0003] Chinese patent CN 108623332A discloses a production method for ceramic tiles with fluorescent anti-counterfeiting marks. On the body of the ceramic tiles, first spray a bottom glaze layer, then sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/89C03C8/00
CPCC04B41/89C04B41/52C03C8/00C04B41/5027C04B41/5015C04B41/4539C04B41/0072C04B41/5022C04B41/4543C04B41/50
Inventor 刘一军陈鹏程汪庆刚吴洋黄玲艳
Owner MONALISA GRP CO LTD
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