JPH07238633A - Porous ceramic board - Google Patents

Abstract

PURPOSE:To realize various designs having depth in feeling such as dignity with a simple process by placing a net structure on a base layer consisting of foaming inorganit granulated substances, and at the same time by integrally baking them. CONSTITUTION:A net structure 3 is placed on a base layer 1 consisting of foaming inorganic granulated substances, and at the same time by integrally baking them for obtaining a porous ceramic board. The net structure 3 is that which an open-meshed fabric or net consisting of heat-resistant wires such as copper, stainless steel, and iron has been cut to form an appropriate pattern. Thereby, the net structure 3 forms a decorative surface and can be seen three- dimentionally, and various designs having depth in feeling can be easily realized. Further, it is preferable to interpose a surface decorative layer 2 consisting of color-mixed glaze grains, glass grains, or the like between the base layer 1 and the net structure 3.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to porous ceramic plates. More specifically, the present invention relates to a porous ceramic plate that allows a wide variety of designs such as heavy taste to appear.

[0002]

2. Description of the Related Art Porous ceramic plates are being used as building materials because they are lightweight and have excellent fire resistance and heat insulating properties. The porous ceramic plate is subjected to surface makeup in order to improve the design of the surface. As the surface makeup, a glaze granule or a glaze sheet colored and compounded on a base layer made of an expandable inorganic granule is laminated in a predetermined shape to form a surface makeup layer, and the obtained laminate is baked. Solution integration is performed.

[0003]

However, in the porous ceramic plate having the above-mentioned structure, since the pattern or coloring of the decorative surface tends to be a monotonous and planar expression, it is possible to obtain a deep metallic feeling or a heavy taste. There is a problem in that it is not possible to obtain a design that is sensuously heavy.

In addition, the surface of the makeup may be dotted (a surface defect in which gas is contained in the interior and the surface is a thin film so that the thin film is exposed when pressed with a nail), and the base layer Bubbles are likely to occur at the interface between the and the makeup layer. Therefore, there is also a problem in that the design on the surface of the makeup rises in several places, impairing the design, and part of the design peels off when it is blown.

In view of the above circumstances, the present invention provides a porous ceramic plate capable of easily and surely allowing a variety of designs that have a sensationally heavy weight such as heavy taste to appear on the surface of a decorative surface. The purpose is to

[0006]

The porous ceramic plate of the present invention is characterized in that a net structure is loaded on a base layer made of an expandable inorganic granule.

Further, it is preferable that a surface decorative layer is interposed between the base layer and the net structure.

The net structure is preferably made of metal.

Further, it is preferable that the net structure is coated with glass.

[0010]

The porous ceramic plate of the present invention can be obtained by placing the net structure on the base layer and simultaneously firing the net structure to be integrated with the net structure.

This net structure becomes a decorative surface and looks three-dimensional. Moreover, by changing the shape of the net structure in various ways, it is possible to easily obtain a wide variety of designs with a solid taste.

Further, the net structure facilitates the release of gas from the surface by cutting, crushing, or squeezing bubbles and bubbles that are likely to occur in the surface decorative layer during firing. Therefore, the design of the decorative surface is not impaired.

[0013]

The porous ceramic plate of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a partial sectional perspective view showing an embodiment of the porous ceramic plate of the present invention.

In the present invention, the expandable inorganic granules constituting the base layer 1 are mainly composed of Al ₂ O ₃ —SiO ₂ type minerals such as acid clay, shirasu, pearlite, anti-fire stone, and feldspar. Soda ash, sodium nitrate, glass powder, boric acid,
Fluxing agent such as borax, dolomite, SiC, barium carbonate,
It is obtained by pulverizing and granulating a mixture of a foaming agent such as potassium carbonate and the like, which is supplemented. The type of raw material and the mixing ratio thereof may be appropriately selected according to the expansion ratio, the melting temperature, etc., and are not particularly limited in the present invention.

The blended raw material is put in a pot mill together with a steel ball having a diameter of about 10 mm, and dry-ground for about several hours. The resulting powder is a 325 mesh pass
The size is about 96% or more, and the powder is granulated with a pan pelletizer while spraying a molasses aqueous solution or a CMC aqueous solution. The particle size is usually about 0.1 to 5 mm.

The thickness of the base layer 1 is not particularly limited in the present invention, but is usually about 3 to 100 mm, and the thickness may be set according to the application.

As the surface decorative layer 2, colored glaze particles, glass particles, or powder thereof can be used. The glaze granules are granulated by powdering a raw material in which glass powder, frit, or the like is used as a main raw material and an inorganic coloring pigment is mixed as a colorant. This particle size is usually 0.
It is about 5 to 3.5 mm. For the thickness of the surface decorative layer,
Although not particularly limited in the present invention, it is usually about 3 to 7 mm, preferably about 5 mm. The surface decorative layer 2 may be omitted.

The present invention is characterized in that the net structure 3 is provided on the surface layer of the ceramic plate.

As the net structure 3, a net or net made of heat-resistant filament (diameter of about 0.1 to 2 mm) such as copper, stainless steel, iron, etc. is cut into a predetermined flower pattern by a cutter or the like, if necessary. It is a thing.

In this embodiment, a floral pattern is used as the shape, but the present invention is not limited to the floral pattern, and for example, a geometrical pattern or an animal pattern may be used. Good.

Further, although one floral pattern is used in the present embodiment, the present invention is not limited to one and a plurality of floral patterns may be used.

Therefore, a wide variety of designs can be made to appear by combining the floral pattern and the geometric pattern, or by printing the pattern and baking it. The printing can be performed by, for example, screen printing or attaching a transfer paper (a sheet printed with glaze).

When glass, frit, etc. are laminated on the net structure 3 and simultaneously fired to cover the vitreous material, a harder and smoother surface makeup can be obtained.

Next, a method for manufacturing the porous ceramic plate of the present invention will be described.

Preparation of Base Layer Raw Material Otaniishi 64.5% (% by weight, the same applies below), soda ash 18%, water glass powder 5%, tri-talc talc 12% and SiC 0.5% together with a 10 ^mmφ steel ball. It was put in a pot mill and dry-ground for 4 hours. The resulting powder was 325 mesh pass 96% or more in size. This powder was granulated with a pan pelletizer while spraying a 15% molasses liquid to obtain a granulated product having a particle size of 1 to 4 mm.

The surface decorative layer prepared glass powder 62% of the raw material, the frit 25%, was dry milled between elutriation clay 5% and 5 hours was placed in a pot mill to mixed material consisting of 8% of zirconium silicate with steel balls of 10 mm ^phi . The resulting powder was 325 mesh pass 96% or more in size. The powder was granulated with a pan pelletizer while spraying a 10% molasses liquid to obtain a granulated product having a particle size of 1 to 2.5 mm.

A net-like base material was prepared with a pitch of 0.2 mm using a copper wire having a net structure wire diameter of 0.2 mm. The obtained base material was cut into a floral pattern by a cutter to obtain a net structure.

Baking A laminated body is made using the granulated product prepared as described above, and the net structure is placed on the laminated body. after that,
This was fired and solution-integrated to obtain a porous ceramic plate.

For the firing, a tunnel kiln having a total length of 39 m, on which a heat-resistant mesh belt was installed for transportation, was used. Width 1
Alumina was applied as a mold release material on a m mesh belt, and the base layer granules were evenly charged to a thickness of 10.5 mm, and the decorative layer granules were 5 mm thick. Were laminated so that The net structure was placed on the obtained laminated body and transported to the pre-tropical zone, and then passed through the firing zone, the quench zone, the slow cooling zone, and the cooling zone in that order, and carried out from the furnace outlet.

The firing temperature was 900 ° C. The moving speed of the mesh belt was 25 cm / min, and the time required to enter and exit the furnace was about 160 minutes.

When the obtained porous ceramic plate was visually observed, copper was oxidized by high temperature and exhibited a heavy metal-specific texture.

Further, no swelling was observed on the decorative surface, and the design was not damaged.

It was also confirmed that the obtained porous ceramic plate has higher rigidity than the conventional porous ceramic plate due to the action of the net structure as a reinforcing material and is hard to be broken.

[0035]

As described above, in the porous ceramic plate of the present invention, a net structure can easily cause a design having a heavier taste or the like to have a perceptual weight, and the shape of the net structure can be changed. A wide variety of designs can be obtained by various modifications.

Further, since the net structure facilitates the release of gas from the surface decorative layer during firing, the designability is not impaired.

Moreover, the porous ceramic plate of the present invention is
Since it can be manufactured in the step of placing the net structure on the surface decorative layer, the design can be applied in a simple step.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional perspective view showing an embodiment of a porous ceramic plate of the present invention.

[Explanation of symbols]

 1 base layer 2 surface decorative layer 3 net structure

Claims (4)

[Claims] 1. A porous ceramic plate in which a net structure is loaded on a base layer made of an expandable inorganic granule. 2. The porous ceramic plate according to claim 1, wherein a surface decorative layer is interposed between the base layer and the net structure. 3. The porous ceramic plate according to claim 1, wherein the net structure is made of metal. 4. The porous ceramic plate according to claim 1, 2 or 3, wherein the net structure is coated with glass.