JPH0788828A - Preparation of grooved tile - Google Patents

Abstract

PURPOSE:To prevent groove parts from sagging during baking by molding a tile molded item with supporting legs in its grooves of the grooved tile and removing the supporting legs after baking is performed. CONSTITUTION:When a tile 10 on the rear face of which a plurality of wide grooves 12 extending in parallel each other are formed at regular intervals is formed, not only the grooves 12 are formed but also a plurality of supporting legs 14 with the same height as the depth of the grooves 12 are formed at the same time on the bottom parts of the grooves 12. When this is baked, as the groove 12 forming parts 16 are brought into a condition where they are supported by a plurality of supporting legs 14, there exists no possibility that the groove 12 forming parts 16 generate sagging deformation during calcining. After baking, the supporting legs 14 are cut and the surfaces of the grooves 12 are smoothed.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a method for manufacturing grooved tiles.

[0002]

2. Description of the Related Art Grooved tiles having grooves have been widely used. Generally, in the case of this kind of grooved tile, the groove formed on the back surface is often formed exclusively for the purpose of increasing the adhesive force when the tile is attached to the construction surface through an adhesive such as mortar. On the other hand, it is considered to form a groove 102 on the back surface of the tile 100 as shown in FIG. 3 and use this groove 102 as a groove for fixing a radio wave absorber 104 such as a ferrite plate.

In recent years, the problem of reflection of TV radio waves by a high-rise building, that is, a problem that a reflected wave of TV radio waves by the outer wall of a high-rise building and a direct wave from a TV broadcasting tower are polymerized to cause a ghost on the screen is closed. As a countermeasure, the outer wall of high-rise buildings is being constructed as an electromagnetic wave absorbing wall.

For this purpose, a groove 102 is formed on the back surface of the tile 100 and a radio wave absorber 104 such as a ferrite plate is fixed to the groove 102, and tile construction is performed in this state to construct a radio wave absorption wall body using the tile 100 as a decorative material. It is considered to do.

[0005]

By the way, in this case, the width of the groove 102 on the back surface of the tile is considerably wide (for example, a width of 10 mm or more), and especially when the tile 100 is large, the tile 100 is molded. There is a problem that a phenomenon called so-called sag occurs in the groove forming portion 106 as shown in FIG. 4B during firing.

[0006] For firing the grooved tile 100, in particular, the large tile 100, a roller hearth kiln is generally used as shown in FIG.
While being carried while being supported by 08, it is heated and fired. At this time, the phenomenon in which the groove forming portion 106 of the tile 100 sags due to the action of gravity is caused.

Of course, this phenomenon is not a phenomenon peculiar to firing using a roller hearth kiln, but is a phenomenon commonly occurring when firing tiles in a lying state.

[0008]

The present invention has been made to solve the above problems, and its gist is to support a groove forming portion of a tile at the bottom of the groove when molding the grooved tile. The supporting leg is formed, the tile formed body having the supporting leg is fired, and then the supporting leg is removed.

[0009]

As described above, according to the present invention, the supporting leg is formed at the bottom of the groove in the tile forming, the tile forming body is fired with the supporting leg, and the supporting leg is removed. Therefore, according to the present invention, when the tile is fired, the supporting leg has a function of supporting the groove forming portion of the tile, so that it is possible to prevent the phenomenon of sagging which has conventionally occurred.

On the other hand, this support leg is a portion which is removed after firing, and when the grooved tile is used for constructing a radio wave absorbing wall body, no trouble occurs.

[0011]

Embodiments of the present invention will now be described in detail with reference to the drawings. In FIG. 1B, 10 is a large tile (90 in this example) that can be used as a tile for an electromagnetic wave absorbing wall.
A plurality of wide grooves 12 having a size of 0 × 900 mm and extending parallel to each other are formed at regular intervals on the back surface. Note that the size of the tile 10 is merely an example, and tiles of other sizes may be used.

FIG. 1 shows a method of manufacturing this tile 10, and as shown in the figure, in the method of this embodiment,
When the tile 10 is formed, a plurality of support legs 14 are formed at the bottom of the groove simultaneously with the groove 12.

As shown in FIG. 2, the support leg 14 has a rib-shaped protrusion shape and extends continuously in the same direction as the groove 12, and its height is equal to the depth of the groove 12. It is said to be the same height. The number of the support legs 14 in the same groove 12 can be an appropriate number (including a single number) according to the width of the groove 12.

After the molded body of the tile 10 having the groove 12 and the supporting leg 14 is obtained in this manner, it is then fired.
Although various firing methods are possible, in the present example, a roller hearth kiln having a large number of rollers 18 is used and the back surface of the tile is faced down, and firing is performed in a lying state.

Thus, during the firing, the formation portion 1 of the groove 12 is formed.
Since 6 is in a state of being supported by a plurality of supporting legs 14, the portion 16 in which the groove 12 is formed does not sag as shown in FIG. 4B during firing as in the conventional case.

After the tile 10 is fired, the support legs 14 provided on the bottom of the groove 12 are cut off to finish the bottom surface of the groove 12 to be smooth. By such a manufacturing method, it is possible to obtain the tile 10 having no dripping and the bottom surface of the groove 12 being smooth.

The embodiment of the present invention has been described in detail above, but this is merely an example. For example, the support leg 14 is merely an example, and the support leg 1
4 can have various other forms. For example, it does not have to be formed strictly in the same direction as the extending direction of the groove 12, but it may be formed so as to extend obliquely inside the groove 12 in some cases, or from one end to the other end of the tile 10. It is desirable that the length of the support leg 14 is tiled by arranging the rear end of the support leg 14 and the front end of the following support leg 14 so as to partially overlap each other. It is also possible to form it shorter than the length.

The support legs can have various cross-sectional shapes, and the present invention can be applied to tiles used for purposes other than the above-mentioned absorption of radio waves. Also, the present invention is applicable to large tiles, for example 300 × 300 m.
Those skilled in the art will be able to obtain large effects by applying it to large tiles of m or more, preferably 600 × 600 mm or more, but may also be applied to grooved tiles smaller than these, without departing from the gist thereof. It can be implemented in a mode in which various modifications are made based on the knowledge of.

[Brief description of drawings]

FIG. 1 is a schematic process explanatory view of an embodiment method of the present invention.

FIG. 2 is a perspective view showing the tile molded body in FIG. 1 from the back surface side.

FIG. 3 is an explanatory view when a wide grooved tile is used for a radio wave absorbing wall body.

FIG. 4 is an explanatory diagram illustrating a phenomenon of sagging that occurs when firing a wide grooved tile.

[Explanation of symbols]

 10 tile 12 groove 14 support leg 16 groove forming portion

Claims (1)

[Claims] 1. When molding a grooved tile, a supporting leg for supporting a groove forming portion of the tile is formed at the bottom of the groove, the tile formed body having the supporting leg is fired, and then the supporting leg is removed. A method for producing a grooved tile, which is characterized in that