Preparation method of glazed ceramic tile and molding device used in the method

Abstract

The invention relates to a colored glaze ceramic tile, a production method of the colored glaze ceramic tile, and a forming device using the production method and belongs to the field of building roof materials. The colored glaze ceramic tile comprises a tile body and a surface colored glaze layer. The surface colored glaze layer is attached to the tile body and faces out when in use. The tile body is made with, by weight, 25-40% of clay, 10-20% of quartz sand, 5-15% of auxiliary material, 30-45% of flux, and 0.15-0.5% of additive. The colored glaze ceramic tile, the production method and the forming device have the advantages that materials are selected and matched reasonably, the weight of the obtained colored glaze ceramic tile is evidently lower than that of clay or cement tiles, storage and transportation cost can be saved, and the tile is good in strength and weather resistance and water resistance; energy can be saved, and the requirements for industrial enlarged production are met; the surface colored glaze layer can be reliably attached to the tile body, and the appearance of the colored glaze tile can be improved; the finally obtained colored glaze ceramic tile can be even in thickness and density.

Description

technical field [0001] The invention belongs to the technical field of building roofing materials, and in particular relates to a colored glaze ceramic tile, and also relates to a preparation method of the colored glaze ceramic tile and a molding device used in the method. Background technique [0002] With the development of the modern construction industry, especially with the significant improvement of people's quality of life, the requirements for building materials have also increased accordingly. As far as roof tiles are used as building roof materials, not only high strength, light weight, flatness Ideal, good weather resistance (antifreeze, waterproof) and excellent fireproof effect, and also pay more attention to the visual quality, the so-called visual quality such as beautiful appearance and rich colors, etc. [0003] Known roof tiles mainly include clay tiles, cement tiles and glazed tiles, etc. The production process of this roof tile is mostly prepared by wet m...

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Problems solved by technology

Information about the preparation of glazed ceramic tiles can also be found in open Chinese patent documents, typically as the invention patent application publication number CN10234381A discloses "novel glazed ceramic tile dry pressing production process" (this patent application is proposed by the applicant ), but the patent application scheme did not disclose the raw materials and their proportions and molding devices, etc.

In particular, since the glazed ceramic tile is composed of a plurality of concave and convex alternate surfaces (the cross-sectional shape is generally S-shaped), it is difficult to follow the idea of ​​​​preparing flat wall and floor tiles to feed the mold. The mold of the glazed ceramic tile is a curved surface mold, and because the moisture content of the dry process tile (called plain blank in the industry) is significantly lower than that of the wet process tile, the lower moisture content of the tile has undesirable However, it cannot avoid fluidity, so it is more difficult to feed material (also called cloth, the same below) to the curved surface mold. If the material is not evenly fed to the curved surface tile, it will affect the ceramic tile pressed out by the press. The thickness of the billet is uniform, and it is easy to produce uneven density, so it is difficult to guarantee the quality of glazed ceramic tiles, such as easy delamination and cracking, etc.

It can be seen that the dry pressing production process, that is, the dry pressing method for preparing colored glaze ceramic tiles, has the advantages of convenient and quick demoulding of the green body and short preparation process (the time required from pressing the green body to the finished product is about 3 hours, which is only 20 times that of glazed tiles. About one quarter) and energy saving, but how to meet the requirements of curved surface fabric for curved surface molds is always a technical problem that the industry expects to be solved as soon as possible but has not been solved so far.

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