JPH07300359A - Glazed plate and its manufacturing method - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a plate-like body made of glaze, which has high chemical resistance and does not absorb water. [Structure] A glazed component or a component containing 70 parts by weight or less of a component which is insoluble in the glaze during firing is formed into a plate shape and fired. The components of the composition may include a coloring component, and
It is preferable to use boron nitride as the spread powder during firing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate-shaped body using glaze or a method for manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, glaze has never been fired as a single body. When using a glaze to manufacture a plate-like body, for example, a porcelain or stoneware tile, a kneaded clay prepared from a raw material such as feldspar or porcelain stone or clay is pressure-molded and, if necessary, at low temperature. It was fired at a high temperature until it was glazed and porcelained or glazed, either unglazed or not unglazed. In the case of stoneware tiles obtained by firing,
It had a water absorption of 1.0 to 10.0%. For this reason,
If a tile with a high water absorption rate was used in cold regions, frost damage could occur. Further, the bisque-fired plate has low strength and needs a thickness of several mm, and it is difficult to prepare a plate having a large area.

[0003]

It is an object of the present invention to provide a plate-like body made only from glaze, which is a plate having a design peculiar to glaze and having no water absorption and capable of having a large area. is there.

[0004]

[Means for Achieving the Object] In the invention of claim 1 of this application, the main component is a frit or a raw material thereof, such as feldspar, limestone, silica stone, dolomite, talc, kaolin, dolomite, etc. The non-melting substance selected from oxides, carbides, nitrides and the like mixed in 70 parts by weight or less is fired into a plate shape.

According to a second aspect of the present invention, the glaze of the first aspect has a coloring component formed by a transition metal oxide or carbonate.

According to the third aspect of the present invention, the main component is a glaze selected from frit or its raw material such as feldspar, limestone, silica stone, dolomite, talc, kaolin, dolomite, and oxides, carbides, and nitrides. In this method, a powder containing 70 parts by weight of a non-melting component selected from materials and the like is made into a slurry together with water and a binder, formed into a plate by a sheet forming method or the like, and then fired at 600 ° C to 1300 ° C.

The invention according to claim 4 is a method in which the glaze according to claim 4 contains a coloring component of an oxide or carbonate of a transition metal.

According to a fifth aspect of the present invention, a method is used in which boron nitride is used as the spread powder when firing the slurry molded body of the glaze.

The glaze, coloring component, and
Glazed slurry etc. will be explained. First, a frit to be a glaze or this raw material will be exemplified. Glazes are classified according to the firing temperature and raw materials used, and feldspar glaze, lime glaze, dolomite glaze, talc glaze, zinc glaze, barium glaze, alkaline glaze, borate glaze, and lead with a firing temperature of 1000 ° C or lower at a firing temperature of 1250 ° C or higher. There is a glaze. Each glaze is potassium feldspar, soda feldspar, flotation feldspar, porcelain stone, limestone, dolomite, talc, kaolin, dolomite, kasumi stone, salt, sodium carbonate, cullet, spoil, carbonate, nitrate nitrate, soda compound , Lithium compounds, petalite, lithia mica, ambrigonite, lithium carbonate, lithium fluoride, wollastonite, fluorspar, magnesite, barium carbonate, zinc oxide, red lead, lead white, basic components such as aluminum hydroxide, silica stone , Straw ash, paddy ash, boric acid, borax, olivine, soda borolith, acidic components, alumina, iron oxides, neutral components, antimony oxide, red iron oxide, ogre plate, limonite, flooded soil, loess,
Ilmenite, Ashinuma stone, Kimachi stone, Kuresu, cupric oxide, manganese dioxide, manganese carbonate, manganese phosphate, chromium oxide, lead chromate, barium chromate, copper carbonate, cobalt oxide, cobalt carbonate, neodymium oxide, oxidation Praseodymium, cadmium sulfide, sodium uranate, vanadium pentoxide, gold, silver, etc. are used as coloring components, and in addition, bone ash, calcium phosphate, stannic oxide, titanium oxide, zircon, zirconia are opacifying agents, emulsifying agents, It is used as a coloring aid or pigment, and these are mixed to form a glaze. In addition, frit is a mixture of low-grade glaze alkali carbonate or boric acid with raw materials such as high-grade glaze silica, feldspar, clay, etc.
It is pulverized into fine powder that is insoluble in water, and frit is also a type of glaze.

The non-melting component is blended with the glaze,
A component that does not melt at the melting temperature of glaze. Therefore,
Different glazes will have different non-melting components available for the glaze used. Then, this non-melting component acts as a filling component. Further, in the case of a single composition, even a non-melting component may form a eutectic substance together with other non-melting components or glaze and become a glaze.

This non-molten component is 7% by weight combined with the glaze.
It is compounded within 0 parts by weight. If this blending ratio exceeds 70 parts by weight, non-melting components will appear on the surface of the plate-shaped body, the surface will lose gloss, the plate-shaped body will become water-absorbing, and The strength becomes smaller.

Materials used as the non-melting component include aluminum oxide, antimony oxide, yttrium oxide,
Of transition elements such as calcium oxide, silicon oxide, magnesium oxide, chromium oxide, cobalt oxide, zirconium oxide, titanium oxide, iron oxide, neodymium oxide, vanadium oxide, barium oxide, bismuth oxide, boron oxide, lanthanum oxide and molybdenum trioxide Carbide of transition elements such as oxides, silicon carbide, tungsten carbide, titanium carbide, boron carbide and tantalum carbide, nitriding of transition elements such as aluminum nitride, silicon nitride, zirconium nitride, titanium nitride, tantalum nitride, niobium nitride and boron nitride There is a thing. In addition, there are minerals containing one or more of these substances as main components, and these can be used alone, or more than one of the substances listed above can be used simultaneously.

In order to manufacture a plate-like body by using these glaze and non-melting components as starting materials, first, a glaze or non-melting component is used to prepare a sludge form. At this time, if the viscosity of the slurry is insufficient, adjust by adding a thickener with water-soluble polymer or clay or lime.

The sludge formed by glaze is formed by a sheet forming machine (doctor blade), dried and formed into a plate, and fired at an appropriate temperature, or it is directly coated on a ceramic shelf plate having releasability with a doctor blade. A thin film is formed by applying or spraying, and is dried and baked. If boron nitride is used as the spread powder in order to provide releasability during firing, it can be easily separated from the ceramic shelf board after firing. Boron nitride used for the spread powder has the same structure as graphite and has lubricity and releasability. And, it can be used up to about 950 ° C. in air and up to 2200 ° C. in an inert atmosphere. The spread powder is applied to the shelf plate by dispersing it in water for brush coating or spray coating. However, since the usable temperature conditions differ depending on the firing atmosphere, they must be distinguished.

The firing temperature varies depending on the constituents of the glaze, including feldspar glaze, lime glaze, dolomite glaze, talc glaze,
1 for high-grade glaze made from zinc glaze and barium glaze
Baking is performed at 200 ° C. or higher, at 1000 to 1200 ° C. for alkaline glaze or borate glaze as a raw material, and at 1000 ° C. or lower and 600 ° C. or higher for a lead glaze raw material.

[0016]

【Example】

Example 1 Zircon frit Z-900,100 manufactured by Nissou Sangyo Co., Ltd.
35 parts of water, 1 part of dispersant, and 7 parts of binder (polyvinyl alcohol, methyl cellulose, synthetic resin emulsion containing acrylic acid ester copolymer as the main component) are added to 15 parts, and uniformly dispersed by a mill, and then a sheet forming machine. When it is formed into a plate shape by, dried, cut, and fired at 780 ° C. in an electric furnace, a partially recrystallized plate is baked. This plate is transparent and has a glossy surface. Furthermore, when it is baked at 820 ° C., it is completely recrystallized and baked into a milky white plate. At this time, boron nitride was used as the spread powder.

Examples 2 to 4 Of the formulations used in Example 1, Z-900 was 95
As a coloring component, P-40 manufactured by Nissou Sangyo Co., Ltd.
(Yellow), M-55 (green), M-923 (blue) 5 each
When added in parts and molded using the same method, and then baked at 820 ° C., glossy yellow, green, and blue pigments were baked. The coloring main component of the product P-40 is praseodymium oxide, the coloring main component of M-55 is chromium oxide, and the coloring main component of M-923 is cobalt oxide.

Example 5 Next, Crystal Frit M-1,1 manufactured by Nissou Sangyo Co., Ltd.
After adding 39 parts of water, 1 part of a dispersant, and 6 parts of a binder (polyvinyl alcohol) to 00 parts and uniformly dispersing with a mill, a sheet was formed and baked at 750 ° C. to obtain a transparent plate.

Example 6 (press) Also, a crystal frit M-20 manufactured by Nisto Sangyo Co., Ltd.
4,75 parts, Sumitomo Chemical Co., Ltd. Amilna AMS-1
2,25 parts, acrylic emulsion (solid content 20%)
After adding 15 parts, 1 part of a dispersant and 45 parts of water and mixing with a ball mill, water was added to adjust the viscosity to 300 cps to obtain a slurry. Granules with an average particle size of 90μ are prepared using a spray dryer, and the pressure of the mold is 1000k.
Press-mold at g / cm ² . When the obtained plate was baked at 760 ° C., a gray matte plate was formed.

Example 7 (extrusion) Crystal frit M-25,50 manufactured by Nissou Sangyo Co., Ltd.
Part, Sumitomo Chemical Co., Ltd. aluminum hydroxide C-30
8,50 parts, methyl cellulose 5 parts, dispersant 0.5 parts,
20 parts of water was added and kneaded with a kneader to obtain a slurry. The kneaded material suitable for extrusion was prepared by adjusting the water content, deaerated, and molded using an extruder. When the obtained plate was fired at 750 ° C., a plate having a low specific gravity foamed by bubbles formed by the water generated from aluminum hydroxide was formed inside.

Example 8 (Coating) 50 parts of M-25, 50 parts of Silicon Carbide RC-100F manufactured by Ohira Random Co., Ltd., 3 parts of acrylic emulsion (solid content 45%), dispersant of 0.8. Part, water 30 parts, thickener 1 part, and mixed with a mill, add water to increase the viscosity to 7
Adjust to 000 cps. The obtained slurry is applied onto a non-woven fabric with a spray coater to a thickness of 3 mm and dried to form a plate. When this plate was baked at 750 ° C., it was baked into a glossy plate with no bubbles inside.

Comparative Example 1 Zircon Frit Z-900, 20 parts, Alumina A
MS-12, 80 parts was mill-dispersed with water, a dispersant, and a binder, and after the sheet was formed, the firing temperature was increased from 700 ° C to 1600 ° C, but it was 1300 due to the small amount of molten components.
It did not have strength up to ℃, and increased above it, but it was not glossy and did not become a plate with a feeling of makeup such as tiles.

Comparative Example 2 As bed powder, 100 parts of water was added to alumina AMS-12,10.
0 part and 1 part of a dispersant were added to form a slurry, which was coated on a shelf plate, and the plate formed by the formulation of Example 1 was baked at 780 ° C. The coated alumina powder adheres to the contact surface with the spread powder, which is the back surface of the plate-shaped body after firing,
It becomes a plate that easily peels off and it looks bad,
At the time of use, it was necessary to remove the spread powder again. Moreover, it was difficult to cleanly remove the alumina, which is the floor powder.

[0024]

EFFECT OF THE INVENTION The glaze plate-like body of the present invention can be a plate having a thin thickness, gloss, and any color. In addition, since a large plate-like body can be used, it can be used as a decorative plate or a plate that is resistant to acid and alkali chemicals such as furniture, electric appliances, and sinks, and is not scratched. Also, when it is used as a tile for construction, it can be made lighter because it can be made a thin plate, the burden on the operator is small, and tiles with different dimensions used for the end can be easily cut by cutting glass. The cutting work is easy.

Claims (5)

[Claims] 1. A glaze selected from feldspar, limestone, silica stone, dolomite, talc, kaolin, dolomite, which is a raw material for frit or glaze, and is selected from oxides, carbides, nitrides, etc. A glaze-made plate-like body, characterized in that it contains 70 parts by weight or less of a non-melting component and is baked into a plate-like shape. 2. The glaze contains at least one coloring component selected from oxides or carbonates of transition elements such as iron, cobalt, manganese, nickel, chromium and copper, which are coloring components. A plate made of glaze. 3. A glaze selected from feldspar, limestone, silica stone, dolomite, talc, kaolin, dolomite, which is a raw material for frit or glaze, and is selected from oxides, carbides, nitrides, etc. A powder containing less than 70 parts by weight of non-molten components is slurried together with water and a binder,
A method for producing a glaze-shaped plate-like body, which comprises forming the plate-like body by a sheet forming method or the like and then firing at 600 ° C to 1300 ° C. 4. The glaze according to claim 3 contains one or more coloring components selected from oxides of transition elements such as iron, cobalt, manganese, nickel, chromium and copper or carbonates of the same which are coloring components. A method for producing a plate-shaped body made of glaze characterized in that 5. The method for producing a glaze plate-like body according to claim 3, wherein boron nitride is used as the spread powder during firing.