JPH10194819A - Roof tile and its firing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to form clearances between respective roof tiles made of pottery and porcelain molded to a square or rectangular shape without using supporters, to prevent the stagnation of gases in a tunnel kiln, to uniformly fire these roof tiles and to execute horizontal lap firing without the occurrence of post sagging of glaze by forming projecting parts near the butt parts on both sides of the roof tiles. SOLUTION: The roof tiles 1a, 1b, 1c are formed by using a roof tile clay as a main raw material, pressing or extrusion molding a body clay prepd. by mixing sintering agents contg. metal oxide and coloring agents, then firing these moldings. The projecting parts 2 are formed on one face of the butt parts on both sides of the roof tile 1a. These projecting parts may be formed in another positions like the projecting parts 2, 2a shown by the roof tiles 1b, 1c. The roof tile bodies formed to such shapes are dried and are superposed on each other in the state of applying the glaze thereon and disposing the projecting parts 2, 2a downward in parallel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof tile used for a building and a method of firing the same, and more particularly, to a roof tile that can be uniformly fired by lapping and a method of firing the same.

[0002]

2. Description of the Related Art Conventionally, roof tiles used in buildings are mainly made of specially produced clay produced in various places and mixed with metal oxides and mineral powders. After creating and drying the tiles formed into a rectangular shape and applying the glaze to the dried tiles,
It is manufactured by firing.

[0003] In view of this, the firing method of this tile is shown in FIG.
8 will be described. FIG. 7 shows a firing method using a support, and FIG. 8 shows a method not using a support. As the tile material before firing, a solid tile material 50 as shown in FIG. 6A or a tile material 51 having a hollow portion 52 as shown in FIG. 6B is used. In the following description of the firing method, the case where the tile substrate 50 is used will be described.
Of course, the same applies to the case where the tile body 51 is used.

[0004] First, the case of using a support will be described. As this firing method, there are two types shown in FIGS. 7A and 7B. 7A, the tiles 50, 50,... Are mounted in parallel on the supports 55, 55,. Are fired in a kiln. on the other hand,
In the firing method shown in FIG. 7 (B), the tiles 50, 50,... Are mounted and held in parallel on the supports 56, 56,. And fired in a kiln.

Next, a case where no support is used will be described. This firing method includes the steps shown in FIGS. 8A and 8B.
There are different ways. In the firing method shown in FIG. 8A, the tiles 50, 50,... Are vertically independent in the longitudinal direction, and the tiles 50 are put into a kiln and fired. In the firing method shown in FIG. 8B, the tile substrate 50 is placed in a kiln and baked.

[0006]

[0005] However, the above 4)
The types of firing methods have the following problems. That is, in the firing method shown in FIG. 7, since the support 55 or 56 is required, the arrangement space of the tile is large,
It was difficult to fire a large amount at a time. Moreover, since the support 55 or 56 affects the accuracy of the roof tile, the support 55 or 56 is required to have durability against repeated heating and cooling. further,
In the firing method shown in FIG. 7 (B), the tile may not be baked straight or the glaze may sag.

In the firing method shown in FIG.
Although the advantage that 5 or 56 is not required is an advantage, FIG.
In the firing method shown in (A), since the tile base 50 is self-supporting without any support, there is a very high possibility that the tile will not be baked straight due to the influence of gravity or the like, or that the glaze will droop. Was. In the baking method shown in FIG. 8B, since the baking is performed on one sheet, the space for arrangement is further increased as compared with the baking method shown in FIG. 7, and it is difficult to bake a large amount at a time.

Accordingly, the present invention has been made to solve the above-mentioned problems, and has a smaller space for placement without using a support, and a large number of tiles are uniformly fired at once, and after the glaze, It is an object of the present invention to provide a roof tile capable of stacking without sagging and a method of firing the tile.

[0009]

In order to solve the above problems, according to the invention of claim 1, in a tile made of ceramic formed into a square or a rectangular shape, near the butted portions on both sides of the tile. A convex portion is formed on the substrate.

According to a second aspect of the present invention, in order to solve the above problems, the tile according to the first aspect is further characterized in that one or more convex portions are further formed between the convex portions. .

According to a third aspect of the present invention, in order to solve the above problem, in the tile according to the first or second aspect, the convex portion is formed on only one side or both sides of the tile. It is characterized by the following.

According to a fourth aspect of the present invention, there is provided a method for firing a tile made of ceramics, which is formed in a square or rectangular shape, in order to solve the above problems. Superimpose and bake.

In the tile having the above structure, the tiles can be overlapped vertically in a horizontal state without using a support, and the tiles can be overlapped with each other without the entire surface being in close contact with each other. Can be. Therefore, by stacking and firing the tiles of the present invention, the number of tiles that can be fired at one time can be increased. Further, since a gap is created between the tiles, the gas in the kiln flows in the tunnel kiln without stagnation, so that the tiles can be fired quickly and uniformly. Furthermore, since each tile is fired in a horizontal state, the glaze does not droop.

According to a fifth aspect of the present invention, in order to solve the above-mentioned problems, in a tile made of ceramics formed in a square or rectangular shape, the shape of the tile is a wave shape.

According to a sixth aspect of the present invention, in order to solve the above-mentioned problems, in a method of firing a tile made of ceramic formed into a square or a rectangular shape, the tile according to the fifth aspect is formed by mounting the tile having the corrugated peak. The part and the valley are overlapped and fired.

In the tile having the above structure, a gap can be created between the tiles by overlapping the peaks and valleys of the waveform. Therefore, by overlapping and firing the peaks and valleys of the waveform of the tile of the present invention, the same effects as those of the first to fourth aspects can be obtained.

According to a seventh aspect of the present invention, in order to solve the above-mentioned problems, in a method for firing a roof tile made of ceramic and having a square or rectangular shape and having a hollow portion, the roof tile having the hollow portion is stacked. It is characterized by firing together.

According to the invention of claim 7, the same effect as that of the invention of claim 3 can be obtained, and a large number of tiles can be fired at one time, and the production efficiency is improved.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a roof tile and a method for firing the same according to the present invention will be described in detail with reference to the drawings, taking concrete embodiments. FIG. 1 is a perspective view of a roof tile according to a first embodiment of the present invention, and FIG. 3 is an explanatory view for explaining a firing method thereof.

The tile 1a is made of clay for tile as a main raw material, and is formed by pressing or extruding a base soil obtained by mixing a sintering agent containing a metal oxide or the like with a coloring agent. It was done. Needless to say, the tile body also has the same shape. As shown in FIG. 1A, the roof 1a has a protrusion 2 formed on one side only at the butting portion on both sides. The height of the projections may be arbitrarily set depending on the conditions for firing the tile body. In addition, this convex portion can
As shown in (A), not only the butted portions on both sides,
As in the case of a roof tile 1b shown in FIG. In addition, it is not necessary to provide the convex portion 2 at the butting portion, and the roof 1c shown in FIG.
It may be provided at a position slightly away from the butting portion, that is, near the butting portion.

Next, the firing method will be described with reference to FIG. The tile body formed into a shape as shown in FIG. 1 is forcibly dried in a drying furnace, and then, in a state where glaze is applied, the tile bodies of the tiles 1a and 1b are combined with the convex portions 2 as shown in FIG. They are stacked in a vertically parallel state with 2a facing downward and loaded on a truck (not shown). And about 80
m, and the tiles 1a and 1b are completed.
Here, in FIG. 2, the roof tiles 1a and 1b are
Although the method of superimposing in the vertical direction with 2a downward is illustrated, of course, it is also possible to superpose in the vertical direction with the convex portions 2 and 2a upward.

By making the tiles (tile foundation) as described above, when the tiles are stacked vertically in a horizontal state,
A gap can be created between the tiles without using a support without the tiles being in close contact with the entire surface. Therefore, the number of tiles that can be fired at one time can be increased. Further, since a gap is created between the tiles, the gas in the kiln flows in the tunnel kiln without stagnation, so that the tiles can be fired quickly and uniformly. Furthermore, since each tile is fired in a horizontal state, the glaze does not droop.

As described above, according to the roof tiles of the first embodiment and the method of firing the roof tiles, the protrusions are formed on one side near the butted portions on both sides, so that the roof tiles can be connected without using a support. The tiles can be stacked vertically in a horizontal state without the entire surface being in close contact with each other, and a gap can be created between the tiles. Therefore, the number of tiles that can be fired at one time can be increased. Further, since a gap is created between the tiles, the gas in the kiln flows in the tunnel kiln without stagnation, so that the tiles can be fired quickly and uniformly. Furthermore, since each tile is fired in a horizontal state, the glaze does not droop.

Next, a description will be given of a roof tile according to a second embodiment and a method of firing the roof tile. The feature of the second embodiment is that, as shown in FIG. 3, the protrusions 12 provided on the roof tile 10 are formed on both sides. In this case, similarly to the first embodiment, as shown in FIG. 1B, another convex portion may be provided between the convex portions 12 of the butting portions on both sides, as shown in FIG.
As shown in (C), a little away from the butt,
That is, it may be provided near the butting portion. Then, similarly to the first embodiment, the roof tiles of the roof tiles 10 are overlapped in the vertical direction, loaded on a bogie (not shown), and fired in a tunnel kiln to manufacture the roof tiles 10.

As described above, according to the roof tile of the second embodiment and the method of firing the same, the convex portions are formed on both sides near the butted portion on both sides, so that the same as in the first embodiment. The effect can be obtained.

Lastly, a roof tile according to a third embodiment and a method of firing the roof tile will be described. The feature of the third embodiment is that, as shown in FIG. 4, the tile 20 is formed in a wavy shape. The method of firing the tile 20 is slightly different from that of the first and second embodiments. As shown in FIG. 5, the ridges 22 and the valleys 22 of the tile base of the tile 20 are parallel in the vertical direction as shown in FIG. The tiles 20 are stacked in this state, loaded on a truck (not shown), and fired in a tunnel kiln to manufacture the tile 20. That is, when the tiles are overlapped, as in the first and second embodiments, the joints of all the tiles are not on the coaxial line, but the joints of the tiles are on the same coaxial line.

As described above, according to the roof tile and the method of firing the roof tile according to the third embodiment, the roof tile is formed in a wavy shape, and the peaks and valleys of the waveform are stacked and fired. Thereby, the same effect as in the first embodiment can be obtained.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various applications are possible. For example, in the present embodiment, the shape of the roof tile is shown in FIGS. 1, 2, and 4, but is not limited to this, and the hollow portion 52 is formed as shown in FIG. It is also possible to stack the tiled tiles and fire them. That is, even if the tile bodies are overlapped with each other, the tiles have a hollow portion, and the gas in the kiln flows through the hollow portion without staying in the tunnel kiln, so that each tile can be fired quickly and uniformly.

[0029]

According to the tile and the firing method of the present invention,
By forming a convex part near the butted part on both sides of the tile and stacking the tiles horizontally in the vertical direction and firing,
A gap can be created between the tiles without using a support without the tiles being in close contact with the entire surface, and the number of tiles that can be fired at once can be increased. Further, since a gap is created between the tiles, the gas in the kiln flows in the tunnel kiln without stagnation, so that the tiles can be fired quickly and uniformly. Furthermore, since each tile is fired in a horizontal state, the glaze does not droop.

[Brief description of the drawings]

FIG. 1 is a perspective view of a roof tile according to a first embodiment.

FIG. 2 is an explanatory diagram for explaining a method of firing the roof tile shown in FIG.

FIG. 3 is a perspective view of a roof tile according to a second embodiment.

FIG. 4 is a perspective view of a roof tile according to a third embodiment.

FIG. 5 is an explanatory diagram for explaining a method of firing the roof tile shown in FIG. 4;

FIG. 6 is a perspective view of a conventional roof tile.

FIG. 7 is an explanatory diagram for explaining a firing method using the roof support of FIG. 6;

FIG. 8 is an explanatory diagram for explaining a firing method without using the roof support of FIG. 6;

[Explanation of symbols]

 1a, 1b, 1c, 10, 20 Roof 2, 2a, 12 Convex part 21 Valley part 22 Mountain part 52 Hollow part 55, 56 Supporting tool

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI E04D 1/16 E04D 1/16 F

Claims (7)

[Claims] 1. A tile made of ceramics formed in a square or rectangular shape, wherein a convex portion is formed near a butt portion on both sides of the tile. 2. The tile according to claim 1, wherein one or two or more convex portions are further formed between the convex portions. 3. The tile according to claim 1, wherein the protrusion is formed on only one side or both sides of the tile. 4. A method for firing a tile made of ceramics, which is formed into a square or a rectangular shape, wherein the tiles according to claim 1 are stacked and fired. 5. A roof tile made of ceramics formed into a square or a rectangle, wherein the roof tile has a wavy shape. 6. A method for firing a tile made of ceramics formed into a square or a rectangular shape, wherein the tile according to claim 5 is fired by overlapping the wave-shaped peaks and valleys. Method of firing tiles. 7. A method of firing a roof tile made of a ceramic having a hollow portion and having a square or rectangular shape, wherein the roof tile having the hollow portion is stacked and fired.