JPH0218100A - Surface additive decoration of sanitation toilet fixture - Google Patents

Abstract

PURPOSE:To prevent collapse of a pattern by a method wherein after coating glaze, a pattern such as spots, a stone grain pattern, and others is processed on a surface of the glaze and when a product is prepared by burning, fluidity of the glaze in burning is so adjusted as to be within a specific range in a flow degree. CONSTITUTION:When a green compact is burnt to be made into a product, a glaze of which fluidity in burning is so adjusted to be within a range of 0.1 to 1.0mm in a flow degree is used. For instance, bright glaze is coated on an upper end part 12 of a surface of a green compact before burning of a western style toilet stool and besides, glaze (matte glaze)is coated on the other part. Then, a coloring agent, i.e. the coloring agent (liquid) prepared by adding cobalt pigment 3wt.% to the glaze 100 is applied thereon by spraying in a scattered point manner to form a spotted pattern. The glaze of which the flow degree is adjusted to almost zero by controlling concretely its particle size so that a residue when 1kg the glaze is passed through a 500 mesh sieve becomes 7 to 10g, is used. When the product is burnt under a specific condition, the dotted pattern on the surface is not collapsed at all.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method for decorating the surface of sanitary ware such as toilet bowls and wash basins.

(Prior art) Sanitary ware such as toilet bowls and wash basins has conventionally been finished in a single color, but recently it has been considered that the surface of such sanitary ware may be decorated with speckled stone patterns or other patterns. There is. However, when such a pattern is applied to the surface of sanitary ware, the following problems arise.

In other words, sanitary ware is usually made by applying 91 tons of glaze to the surface of the base molded body.
The product is made by firing once in a glazed state, but if spots or other patterns are applied on the glaze-applied surface and fired, the glaze will flow when heated in the firing kiln, so The pattern will be disrupted. To explain this in detail by taking the Western-style toilet bowl shown in FIG.
etc., and when the glaze is applied to the surface of the base molded body and fired, these vertical surfaces 100. Overhang surface 10
In step 2, the glaze flows (flows down) to a particularly large extent, causing patterns such as spots on the glaze to collapse or break.
Or the pattern may be different from other parts.

(Problems to be Solved by the Invention) The present invention has been made to solve the above-mentioned problems, and the gist thereof is to apply a glaze to the surface of a sanitary ware base molded body, and then apply the glaze to the surface of the glaze. When applying speckled stone patterns and other patterns to the glaze, and then firing the base molded body to produce a product, the fluidity at the time of firing as the glaze is 0 at the flow rate.
．． The reason for this is that it is adjusted to a range of 1 to 1,0 cm.

(Function and Effects of the Invention) As described above, in the present invention, the fluidity of the glaze is suppressed within a certain range, so the patterned portion on the glaze hardly or not flows at all during firing.

By the way, the inventor conducted various basic experiments to find out to what extent the fluidity of the glaze should be suppressed in order to prevent the deformation of the pattern. It was confirmed that even if there was a wave motion, the change in the pattern was extremely small and did not pose a problem in terms of appearance. It has also been found that if the degree of glaze flow is suppressed to 0.5 mm or less, the distortion of the pattern is not visually discernible. still,
It is also possible to suppress the degree of flow to approximately O, and in this case, no changes such as collapse or breakage of the pattern occur.

The flow rate of the glaze here refers to the fluidity of the glaze, which is obtained by applying glaze to the vertical surface of a test piece, marking a predetermined position on it, and firing it in a kiln. This is the displacement from the initial position of the mark that has flowed down based on the flow of the glaze.

(Example) Next, an example of the present invention will be described in detail based on the drawings.

As shown in FIG. 1, bright glaze is applied to the upper end 12 of the surface of the blank molded body of the Western-style toilet bowl 10 before firing! (While doing j,
Glaze with the composition shown in Table 1 below on other parts (matte glaze)
and on top of it (excluding the upper end 12) a coloring agent having the composition shown in Table 2, i.e., a coloring agent (liquid )
The glazes in Table 1 are applied by spray coating 41 before scattering, and the spots as shown in Table 1: Glaze formulation contents Table 2: Colorant composition. The particle size was controlled so that when 1 kg of glaze was passed through a 500-mesh sieve, the residue was 7 to 10 g, so that the degree of flow was almost 0. Here, the flow rate is fJSl! After applying the glaze on the vertical surface of the test piece 14 as shown in FIG. Position is P1
Assuming that the position is lowered to the P2 position, this refers to the displacement 1jt l from Pl to Pl.

Now, when the base molded body of the toilet bowl 10, which had a glaze and a speckled pattern applied to its surface, was fired under specified conditions using the same firing kiln that was used for the above-mentioned flow measurement, it was found that the speckled pattern on the surface did not collapse at all. .

Next, a glaze with the same composition as above but with a different particle size. Specifically, the particle size was controlled so that the residue when passed through a 500 mesh sieve was 5 g/kg or less, and the flow rate was reduced to 0.
．． When the same experiment as above was carried out using 5 liters of glaze, no noticeable distortion, breakage, or deformation of the pattern was observed.

On the other hand, a glaze with the composition shown in Table 3 (bright glaze: flow degree 0
．． When the same experiment as above was carried out using 5s+s), no changes such as pattern collapse or breakage that could be discerned in appearance were observed.

Table 3: Contents of glaze preparation Next, as shown in Figure 3, the same glaze as in the above example was applied to the surface of the base molded body of the Western-style toilet bowl IO, and a transfer paper with a stone pattern pattern was pasted on the surface. Fired in a kiln. At this time, if the glaze flows, the transfer paper will break, causing the pattern to collapse or be cut.
However, in this example, the flow of the glaze was suppressed, so this phenomenon did not occur, and the stone pattern pattern baked onto the glaze after firing completely maintained its original shape.・
Although the embodiments of the present invention have been described in detail above, the present invention can be implemented in other embodiments.

For example, as shown in FIG. 4, the uninvented invention can be applied to the application of speckled patterns or other patterns to the lower surface of the wash basin 16, and furthermore, it is possible to apply the invention to the surface of hand wash basins and other sanitary ware other than such wash basins. The present invention can be applied to pattern formation.

Furthermore, the above-mentioned examples of glaze formulations are merely examples of the present invention, and in the present invention, it is t'Trl to use glazes with various formulations, and the decorative patterns are also limited to those described above. The present invention is also applicable to other forms of patterning, such as decorating the surface of a base molded body by drawing a picture with a brush, for example, or when creating a single-island pattern.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of a case where a spotted pattern is formed on a Western-style toilet bowl as an embodiment of the present invention, and FIG. 2 is an explanatory diagram of a method for measuring the degree of glaze flow. FIG. 3 is an explanatory view of forming a stone surface pattern on a Western-style toilet bowl as another embodiment of the present invention, FIG. 4 is an explanatory diagram of another embodiment of the present invention, and FIG. 5 is an explanatory diagram of a conventional It is an explanatory view for explaining a problem when decorating the surface of sanitary ware using a general method. lO: Western-style toilet bowl 14: Test piece Figure 1 Patent applicant Inax Co., Ltd. Figure 2 66-j Figure Figure Figure

Claims (1)

[Claims] After applying a glaze to the surface of a sanitary ware molded body, spots, stone patterns, and other patterns are applied to the surface of the glaze, and then when the base molded body is fired to produce a product, the glaze is used as the glaze at the time of firing. A method for decorating the surface of sanitary ware, characterized in that a material having fluidity adjusted to a flow rate of 0.1 to 1.0 mm is used.