JPH01101109A - Method for forming relief pattern in ceramic - Google Patents

Abstract

PURPOSE:To make relief pattern on the surface by a method wherein a proper pattern, such as characters pictures, are drawn with a solution of specific organic materials or colloid dispersion on a face of a ceramic before biscuit firing after drying, surrounding of the pattern is washed off with water with a wet cloth or brush. CONSTITUTION:On the surface of a ceramic before biscuit firing, a proper patterns such as characters or figures are drawn with a solution, of organic material which is water-insoluble and solid at room temperature or organic material which is liquid at room temperature but converted into water-insoluble solid after reaction with water, in an organic solvent, or a colloid dispersion in an organic solvent as the dispersion medium. After the drawing is dried hard, the surrounding of the pattern is washed with water by using a wet cloth or brush, thereby to form relief pattern on the surface. As organic substance solid at room temperature, resins such as acrylic resin, urethane resin or rubber of natural rubber, polybutadiene rubber etc., may be mentioned. As organic material which is liquid at room temperature, but converted into solid by reaction with water, 2-cyanoacrylic esters, and polyisocyanates can be cited.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for easily forming a raised decorative pattern on the surface of ceramics.

Conventionally, various methods have been used to decorate ceramics, mainly to enhance their artistic value. For example, one method of applying it after final firing is overglazing (red and green). There are two methods of applying after bisque firing: painting and sakaki medicine. In addition, methods for applying the material before bisque firing include carving a pattern on the surface, using decorative mud, and inlaying. To explain in more detail, methods such as plating, pounding, hitting, carving, and pressing are used to carve patterns on the surface. t
In addition, the methods of using makeup mud include dipping, hishiyakukake, nagashikake, brushing, takikake, ittsuchin, kakiochi, tobiganna, mishimate, stencil, fingerpicking, and suminagashi. .

In this way, various patterns are applied to the surface of ceramics using various methods.
Ohsho Publishing, 1973).

By the way, as a method for applying relief patterns on the surface of ceramics before unglazing, methods such as shitsutsuke, shaving, and mokoshi are generally used. As for Samurai PA]K, many items with arabesque patterns have been created in China since ancient times. In addition, at present, it is customary to place a mold on the surface of ceramics before or after unglazing, attaching a light rubber plate, etc., and after drawing a pattern with rubber latex, etc., the surrounding area is removed using sandblasting. The method is also carried out on a factory scale. However, the method of chipping or scraping is time-consuming and cannot be mass-produced, and requires a skilled person. The Yaotoshi method requires making a mold for each pattern, and is by no means an easy method. Furthermore, the sandblasting method requires large-scale equipment and is therefore not economical. Furthermore, it is not suitable for individuals to enjoy pottery as a hobby. The present invention
In view of these points, it is an object of the present invention to provide a method for easily forming a relief-like decorative pattern on the surface of ceramics without requiring a skilled person.

That is, the present invention applies an organic substance that is insoluble in water and solid at room temperature, or an organic substance that is liquid at room temperature but can be transformed into a solid insoluble in water by reacting with moisture, etc. to the surface of ceramics before bisque firing. etc. in an organic solvent and draw appropriate patterns such as letters or figures with a photo solution or a colloidal dispersion using water or an organic solvent as a dispersion medium, and after drying and solidifying, use a moistened photo cloth or brush. By washing away the area around the pattern with water, an embossed pattern is formed on the surface. In the present invention, organic substances that are solid at room temperature include acrylic resins, methacrylic resins, urethane resins, polyester resins, styrene resins, vinyl resins (vinyl acetate, vinyl chloride, vinyl alcohol-containing amide resins, solid epoxy resins, etc.). , phenolic resin, rosin resin, cellulose resin, natural resin (shellac, etc.), polyolefin resin, silicone resin, etc., or natural rubber, polybutadiene rubber, styrene-butadiene combination 4.
'MrsBFL), nitrile rubber (NBR), polychloroprene rubber, polyisoprene rubber, ethylene-propylene copolymer rubber (EPR), ethylene-propylene-diene terpolymer rubber (DPI) M), acrylic rubber, Rubbers such as high styrene rubber, butyl rubber (Ko-IR), chlorosulfonated polyethylene, silicone rubber, fluororubber, etc. may be used alone, or mixtures or copolymers thereof (including grafts and blocks).

The reason why we have limited to organic substances here is that they are burned by oxidation firing during the bisque firing or final firing process, and do not leave any residue behind. However, if some chelate compounds, metal salts, or metal oxides containing metal ions are added, the effect of coloring the embossed parts during bisque firing or final firing will appear. Typical examples of organic substances that can react with water, etc. even though they are liquid at room temperature and can turn into solids include 2-cyanoacrylic acid esters and polyisocyanates, which are known as the main components of instant adhesives. Can be mentioned. The former starts polymerization due to water contained in neutralized ceramics before bisque firing, and solidifies through an anionic polymerization reaction. In the latter, an isocyanate group first reacts with moisture and undergoes a decarboxylation reaction to become an amino group], which reacts with other unreacted isocyanate groups and solidifies. Moreover, it does not necessarily have to react with moisture. For example, in the case of a mixture of liquid epoxy resin and polyaquine, it is solidified by the reaction between the epoxy group and the amine group. In this way, when drawing a pattern, it can be dissolved in an organic solvent to maintain an appropriate viscosity.
The key point of the present invention is to solidify the clay particles by evaporation of the solvent or reaction with water, etc., to make the clay particles that make up the unglazed ceramics insoluble in water. In other words, the clay outside the pattern outline is washed away with water, but the clay particles in the area where the pattern is attached are not redispersed, so there is an effect that a precise relief pattern can be formed without flowing out.

In addition, the organic solvents mentioned in the present invention include aromatic solvents such as benzene, toluene, and xylene, aliphatic solvents such as n-pentane and n-hexane, and alicyclic solvents such as methylcyclopentane and cyclohexane. alcoholic solvents such as methanol, ethanol, isopropanol, n-butanol, ketone solvents such as acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, ether solvents such as diethyl ether and tetrahydrofuran, methyl acetate, ethyl acetate , ester solvents such as inglovir acetate and butyl acetate, halogen-containing solvents such as methylene chloride, trichloroethylene, 1.1, l-trichloroethane, tetrachlorethylene, chloroform, chlorobenzene, carbon tetrachloride, etc., or a combination thereof. A mixture is used.

Next, examples of the pattern drawing liquid will be described.

(A) Acrylic resin methyl methacrylate 200 Butyl acrylate 80 2-hydroxyethyl methacrylate 20 Thiocalcol 20 (a) 3
．． 6 Azobisisobutyronitrile 1.8 Toluene
? 00 (a) Kao C Co., Ltd.) The above formulation was mixed at 70 to 80° C. under a nitrogen atmosphere for about 8 hours, and the solid content was adjusted to about 151 with toluene (however, the solid content did not stick to 15%).

rB) Acrylic resin methyl methacrylate 120 ethyl acrylate 180 Emulgen 920 (a)
3 emal OC i) 1.5 potassium persulfate 0.5 water
Wo.

The above formulation is polymerized at 70°C under a nitrogen atmosphere for about 4 hours, and the solid content is adjusted to 20% with water (however, the solid content is 20%).
Don't be arrogant).

(C) Kraft modified SBB.

8B8150! (a) 150 methyl methacrylate 100 styrene
50 benzoyl peroxide 1 toluene +700C) Japan Synthetic Rubber Co., Ltd.) m After polymerizing the above compound in a nitrogen atmosphere at 70 to 80°C for about 8 hours (polymerization line fishing 80 parts), the solid content was reduced to 10 parts. Adjust with toluene (however, do not stick to the solid content range of 10).

(D) Solid epoxy resin Sumiepoxy E8A-019 (c) 300 methyl ethyl ketone 560 ethyl acetate
140 (c) (Sumitomo Chemical Co., Ltd.) The above-mentioned formulation is stirred and dissolved at room temperature.

(E) Polyisocyanate compound D-12ON (D) 100 methylene chloride 100 (D) Manufactured by Ota Pharmaceutical Co., Ltd. The above formulation is thoroughly stirred and mixed until uniform.

Construction example 1 of the present invention After thoroughly drying a pottery molded on a potter's wheel (the same applies hereinafter and not limited to potter's wheel), the acrylic resin solution of (A) or the acrylic resin dispersion of Fi (B), Or (
Using a graft-modified SBR solution (C), a solid epoxy resin solution (D), or a polyincyanate solution (E), a pattern was drawn on the surface of the film using a paintbrush. After drying at room temperature for about an hour, the area around the pattern was washed off with water using a brush or cloth, and the pattern appeared in relief. (At this time, be careful as it will lose its shape if you keep washing it for a long time.) Next, after drying it at room temperature for 24 hours or more, put it in the kiln to reach the final temperature. Bisque firing was carried out by gradually raising the temperature over several hours until it reached 00 to 800 "Q. After bisque firing, a percent glaze was applied and the final firing was performed at 800 to 1400℃ (temperature varies depending on the type of glaze) , I got a totsukushi with an embossed pattern.

Construction example 2 Apply makeup mud to the surface of the tokkuri molded with 0 black and dry thoroughly. On top of that, the acrylic resin solution of (A), or the acrylic resin dispersion of (B), or the graft-modified SBR solution of (C), or the solid epoxy resin solution of (D),
Or, use the polyisocyanate solution of (E) to draw a pattern on the surface of the sheet with a paintbrush. After drying at room temperature for about an hour, wash off the area around the pattern with water using a brush or cloth to create an embossed pattern. I softened it so that only the patterned parts remained with the makeup mud.

After drying at room temperature for 24 hours or more, bisque firing and final firing were carried out in the same manner as in Example 1 to obtain a colored embossed pattern.

Construction Example 3 First, (A) acrylic resin solution, (B) acrylic resin dispersion, or (C) graft-modified SBR solution,
The solid epoxy resin (rD) or the polyisocyanate solution (E) is not limited to cobalt oxide powder C that can be thoroughly crushed in a mortar. Add a small amount of any coloring agent commonly used in pottery and stir thoroughly. Using this solution, a pattern was drawn with a paintbrush on the surface of a pottery molded on a potter's wheel. After drying at room temperature for about 1 hour, the area around the pattern was washed off with water using a brush or cloth. After drying at room temperature for 24 hours or more, bisque firing and final firing were carried out in the same manner as in Example 1 to obtain a colored embossed pattern.

As described above, the present invention has the effect of mass-producing ceramics with high artistic value at low cost because the patterns such as letters and paintings are formed in a washed-out manner and are drawn in the brushstrokes.

PoB Tokumasato string-sheets/74

Claims (1)

[Claims] An organic substance that is insoluble in water and solid at room temperature is applied to the surface of ceramics before bisque firing, or a solution containing an organic substance that is liquid at room temperature but can turn into a solid that is insoluble in water by reacting with moisture etc. in an organic solvent. Alternatively, draw appropriate patterns such as letters or paintings with a colloidal dispersion using water or an organic solvent as a dispersion medium, and after drying and solidifying,
A method for forming relief patterns on ceramics, which is characterized by making relief patterns appear on the surface by washing off the area around the pattern with water using a damp cloth or brush.