JP3180923B2 - Non-slip tile and its manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to non-slip tiles laid on bathroom floors, toilet floors, and the like, that is, non-slip tiles.

[0002]

2. Description of the Related Art Conventionally, as this non-slip tile, as described in, for example, Japanese Patent Publication No. 60-39827, fused alumina having a melting temperature higher than the firing temperature of the tile is applied to the surface of a ceramic tile. The tiles have a non-slip function by being fixed by mixing or by applying a glaze having a high melt viscosity to form an uneven surface.

However, it is difficult to remove dust and dirt deposits on the uneven surface. In particular, when such a non-slip tile is applied to a bathroom floor or the like, dirt due to the presence of the uneven surface is easily formed. Also, since it is hard to fall, the appearance is conspicuous and brings a sense of dirty.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a tile which has an uneven surface and is provided with a non-slip function, which is hardly stained and which can remove stains relatively easily. This is to be found from the aspect surface of the tile unevenness.

[0005]

SUMMARY OF THE INVENTION The present invention is based on the balance between the degree of unevenness that provides a non-slip function on the tile surface and the glossiness as an index of the easiness of falling off dust and the like deposited on the tile surface. The optimum range is 25 to 200 μm, preferably 50 to 150 μm, in which the roughness of the uneven surface is 10 points average roughness
And a glossiness of 5 to 20%, preferably 8 to 1
The above problem was solved by setting it to 2%. Here, if the glossiness is less than 5%, it becomes difficult to remove dirt, and if the glossiness exceeds 20%, it becomes easy to slip, which is not preferable.

A non-slip tile having such surface irregularities is glazed on the surface of a tile base material with a base glaze having a fire resistance of SK3a to 11. When the base glazed layer is in a raw state, the fire resistance is lowered. It can be manufactured by glazing with a glaze for forming an uneven surface that is higher than or equal to the glaze, and then firing.

[0007]

The function of preventing the slip of the tile surface, particularly the function of preventing the slip of a normal tile having a wet surface from a bare foot, has a unique relationship with the degree of unevenness formed on the tile surface. . In addition, the generation of stains and the ease of removal from the surface have a unique relationship with the degree of gloss. By defining the uneven surface in a range of 25 to 200 μm in terms of 10-point average roughness and defining the gloss in a range of 5 to 20%, the accumulated dust can be removed without impairing the anti-slip function at all. Easy tiles can be obtained.

[0008]

FIG. 1 is a view showing a process of forming a non-slip tile according to the present invention, in which 1 indicates a tile base, 2 indicates a base glaze layer formed on the tile base 1, and 3 Indicates a glaze layer formed on the base glaze layer 2 by screen printing for forming an uneven surface when the base glaze layer 2 is in a raw state.

A glaze consisting of 20 parts by weight of feldspar, 10 parts by weight of silica, 20 parts by weight of calcined talc, 10 parts by weight of lime, 5 parts by weight of clay and 35 parts by weight of frit having a melting point of 1180 ° C. (fire resistance SK5a) is prepared. This was uniformly glazed to a thickness of 400 μm on the surface of the tile body 1 for bathroom flooring to form a base glaze layer 2. With the base glaze layer 2 in a raw state, a glaze for adjusting the surface condition having a melting point of 1200 ° C. (fire resistance SK6a) consisting of 40 parts by weight of silica, 25 parts by weight of baked talc, and 35 parts by weight of frit was prepared. Was formed by screen printing to form a glaze layer 3 for forming an uneven surface, which was baked in a tunnel furnace at 1200 ° C. for 24 hours.

As a result, tiles having a surface texture of 10 points, an average roughness of 200 to 250 μm, a gloss of 10 to 15%, and a slip resistance (BPN value) of 30 to 32 were obtained.

Also, feldspar 40 parts by weight, silica stone 10 parts by weight,
1530 parts by weight of wollastonite, 15 parts by weight of alumina, 10 parts by weight of clay and 10 parts by weight of zinc white
The glaze of (fire resistance SK7) was adjusted, and this was uniformly glazed on the surface of the toilet floor tile base 1 to a thickness of 400 μm to form the base glaze layer 2. With this base glaze layer 2 in a raw state,
The raw material powder of the same composition as the base glaze layer 2 such as alumina for increasing the fire resistance is externally added within 25% by weight.
A glaze for adjusting the surface condition at 80 ° C. (fire resistance SK9) was adjusted, and the glaze was screen-printed to form a glaze layer 3 for forming an uneven surface.
It was baked at 0 ° C. for 20 hours.

As a result, the surface texture has a 10-point average roughness of 1 point.
10 to 135 μm, glossiness 6 to 10%, slip resistance (BP
(N value) 41 to 45 tiles were obtained.

As in these examples, tiles having various surface roughnesses were obtained by increasing or decreasing the amounts of baked talc and frit or the amounts of alumina and feldspar of the printing glaze.

[0014] The glossiness is the same as the adjustment of the surface roughness.
By increasing or decreasing the amount of calcined talc and frit or the amount of alumina and feldspar, sample tiles with different gloss levels were prepared.

Table 1 shows the surface condition, slip resistance and stain recovery of each sample tile (Examples 1 and 2) and conventional tiles (Comparative Examples 1 to 4).

[0016]

[Table 1]

In Table 1, the 10-point average roughness Rz is measured according to JIS B by Surcom 570A manufactured by Tokyo Seimitsu Co., Ltd.
The results measured based on the 0601 standard are shown, and the sliding resistance was measured by a slip resistance measuring device manufactured by Tanito Machine Industry Co., Ltd. In addition, the glossiness is manufactured by Nippon Denshoku Industries Co., Ltd.
It shows the value measured based on JIS Z8741 using a gloss meter.

In the same table, the contamination rate% is expressed as: contamination rate = {1− (diffuse reflectance after contamination / diffuse reflection before contamination)} × 100, and recovery rate% is determined by running water washing. Recovery ratio% after removal processing = (reflectance after cleaning treatment / diffuse reflection before contamination)
Indicated by × 100.

In the table, the sliding resistance value is KODAN.
According to (ASTM E303) 221 slip evaluation method,
The BPN value (sliding resistance value: Bri) which is regarded as “no problem” in a wet state and enters the rank of “good” as a walking property rank
Represented by the tissue PendulumNumber. ) Is between 30 and 53, in which case the 10-point average roughness is in the range of 25 to 200 μm.

In the same table, the contamination rate and the contamination recovery rate are within 5% and 90% or more, respectively, when they are close to a tile having a smooth surface. Those within the range of ２０20% fall within the acceptable range for this contamination rate and the contamination recovery rate.

FIG. 2 illustrates these relationships shown in Table 1. The degree of the surface unevenness for exhibiting the anti-slip effect is such that the roughness of the uneven surface is 10 to 20 average roughness.
0 μm and a glossiness of 5 to 20%, the degree of contamination represented by the contamination rate and the contamination recovery rate is low,
It can be seen that the overall effect shows the best balance effect when these are in the respective specified ranges.

[0022]

According to the present invention, the following effects can be obtained.

(1) A tile is formed on an uneven surface,
The point average roughness is 25 to 200 μm and the glossiness is 5
By controlling the surface unevenness and the glossiness as 20% or less, it is possible to obtain a tile having both the functions of opposing the slip resistance and the stain resistance.

(2) It is not necessary to add a particularly complicated process, and a tile having a function of removing adhering spots can be easily obtained.

(3) By changing the thickness of the glaze layer for forming the uneven surface, a non-slip tile suitable for the intended use can be obtained.

(4) If a printing technique or the like is used,
The decorativeness is improved as compared with conventional non-slip tiles.

[Brief description of the drawings]

FIG. 1 is a view showing a process of a method for manufacturing a tile according to the present invention.

FIG. 2 is a diagram showing an overall effect of a non-slip effect by unevenness formed on a surface and a dirt recovery effect by glossiness.

[Explanation of symbols]

 1 tile base 2 base glaze layer 3 glaze layer for forming uneven surface

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) C04B 41/86 C04B 41/89 E04F 15/08

Claims (2)

(57) [Claims] An underglaze layer is formed on the surface of a tile base.
In the non-slip tile having the uneven surface formed on the base glaze layer, the roughness of the uneven surface is 25 to 20 in terms of 10-point average roughness.
A non-slip tile having a thickness of 0 μm and a glossiness of the uneven surface of 5 to 20%. 2. A fire resistance of SK3a to SK3a
After glazing with 11 base glazes, and when the base glazing layer is in a raw state, the fire resistance is the same as or higher than that of the base glaze, and the glaze is applied with a glaze for forming an uneven surface, and then the fired uneven surface is fired. Roughness is 25 to 200 μm in 10-point average roughness
And a method for producing a non-slip tile, wherein the uneven surface has a glossiness of 5 to 20%.