JPH03295874A - Method for patterning ceramic - Google Patents

Abstract

PURPOSE:To form a pattern or character on glazed ceramic in the state continued from the base pattern and separated from the raw base by coating the surface of a base with glaze in a rugged state, screen-printing a pattern on the glaze and baking the glaze. CONSTITUTION:The surface of the base of ceramic 1 is coated with base glaze 2 in a rugged state. A pattern is screen-printed on the glaze 2 with printing ink 3 and a silk screen 4 and the glaze 2 is baked. The ink 3 is made thin at the projecting parts of the glaze 2 and thick at the recessed parts in accordance with the surface ruggedness of the glaze 2 and a yo-hen pattern is formed on the glazed ceramic in an embossed state.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for forming patterns on the glazed surfaces of ceramic products such as various sanitary ware, tiles, and ceramic plates.

[Conventional technology]

Conventionally, in order to add a pattern to a ceramic product, there is a method of applying a base glaze to the base of the product, then applying the glaze on the base glaze by brushing, spraying, printing, etc., and then firing.

When kiln-modulating the design portion of a design tile, there is a method of reacting the printing ink and the base glaze by using a printing ink that has an extremely low melting point with respect to the difference in halftone density of the silk screen plate or the base glaze.

[Problem to be solved by the invention]

However, with the method of using the difference in halftone density of a silk screen plate, there is a limit to the ability to partition the design area by modulating the kiln.

In addition, in the method of using printing ink with a low melting point, the melting point of the glaze in the pattern area is lower than that of the base glaze during firing, so the pattern area is formed in a concave area compared to the base area. This results in an unnatural product, and the outline of the pattern becomes unclear.

As one technique for clarifying the pattern formed on the glazed surface of this ceramic product, there is a method of forming an inlaid pattern disclosed in, for example, Japanese Patent Application Laid-Open No. 61-86485, but the process is complicated and Moreover, even if applied as is, the pattern will not be continuous with the base pattern.

The object of the present invention is to provide a method for producing different patterns, characters, etc. on the glazed surface of a ceramic product in a state that is continuous with the glazed surface substrate pattern and clearly separated from the glazed surface fabric. The purpose is to find out.

[Means to solve the problem]

The method for patterning ceramic products of the present invention is characterized by applying a base glaze in a concave and convex shape on the base surface of the ceramic product, screen-printing a design pattern on the base glaze using printing ink, and then firing the glaze. .

[Effect]

The printing ink forms a uniform surface on the uneven surface, and the convex portions are thinner and the concave portions are thicker to match the unevenness of the glaze surface, so the formed pattern is similar to the fabric. A desired kiln modulation pattern is formed in a state in which it naturally rises from the glaze surface, and after firing, a product with a design part appearing in a kiln modulation pattern on the surface of the ceramic product can be obtained.

〔Example〕

As shown in Fig. 1, 80% by weight of frit, 5% by weight of feldspar, 10% by weight of talc, and 10% by weight of talc are used as base glaze 2 on tile base 1.
After mixing to 5% by weight of clay, specific gravity 155g/c
It was made into a suspension of c. and glazed in spots with a disc mottle.

In addition, when the specific gravity is increased, the unevenness difference on the tile surface becomes larger, and when the specific gravity is lowered, the unevenness difference on the tile surface becomes smaller.
You can adjust the color shading of the design part.

As shown in FIG. 2, a pattern to be applied thereon was printed using a silk screen 4 with a printing ink 3 consisting of 100% by weight frit and 3% by weight pigment. When this was fired at 1100° C. for 35 minutes in an oxidizing atmosphere in a rollerfed 1-skilln, 3 portions of the printing ink were continuous with the base glaze 2 and appeared floating on the base glaze 2.

Note that the extent to which the printing ink 3 protrudes varies depending on the melting point of the ink, and the higher the melting point of the base glaze 2 is used, the more the printing ink 3 can protrude.

〔Effect of the invention〕

(1) Various kiln modulations can be obtained depending on the unevenness of the base glaze, and the contour lines can also be clearly defined.

(2) Even after firing, the pattern part does not become lower than the base glaze layer, is continuous with the base material, and the outline of the pattern part becomes clear.

[Brief explanation of drawings]

The accompanying figures illustrate embodiments of the invention. FIG. 1 shows a state in which a glazed surface is formed in an uneven shape on the surface of a ceramic product, FIG. 2 shows a state in which printing ink has been screen printed, and FIG. 3 shows a state after firing. 1: Reel base 2: Base glaze 3: Printing ink 4: Sill lettering screen Figure 2 Figure 3 Patent sponsor Masu Kobori Representative of Toto Kiki Co., Ltd.

Claims (1)

[Claims] 1. A method for patterning a ceramic product, which is characterized by applying a base glaze in an uneven manner on the base surface of the ceramic product, screen-printing a design pattern on the base glaze using printing ink, and then firing the glaze.