JP2000302530A - Sanitary earthenware and manufacture of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sanitary earthenware and a method for manufacturing the sanitary earthenware capable of easily removing soiling on a surface of the sanitary earthenware for a long period keeping a designing characteristic imparting function of a graze layer. SOLUTION: This sanitary earthenware has a colorable graze layer 2 formed on a surface of an earthenware ground 1, a coloring component in the graze layer is composed of amorphous components and the surface roughness Ra of the surface of the graze layer is below 0.07 μm measured by the tracer type device for measuring surface roughness (JIS-B0651). It is favorable that the colorable graze layer is formed on the surface of the earthenware ground, the graze layer essentially consisting of amorphous components containing at least SiO2 component, Al2O3 component, bivalent metal oxide component and alkali metal oxide and colorant component and crystalline components are not contained or only quartz particles and/or antibacterial agent particles having <10 μm particle diameter are contained in the graze.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing sanitary ware such as a toilet, a urinal, a hand-washing machine, and a basin, which maintains a function of easily removing dirt for a long time.

[0002]

2. Description of the Related Art Conventionally, in the case of sanitary ware such as toilets, urinals, hand washers, washbasins, etc., generally, a glaze material containing crystals such as quartz, zircon, pigments, etc. is applied to the surface of the pottery molding base. And fired at a temperature of 1100 to 1300 ° C. And, since the ceramic body is coated with such a glaze material, it has a design property that can be used as a daily necessity and has sufficient chemical resistance under a use environment.

[0003]

However, the sanitary ware manufactured by the above-mentioned conventional method needs to be vigorously rubbed with a brush with a detergent when dirt adheres, and the workability of cleaning is sufficient. It was hard to say that it was easy. The present invention
In view of the above circumstances, it is an object of the present invention to provide a sanitary ware capable of easily removing dirt on the surface of the sanitary ware over a long period of time while maintaining the design imparting function of the glaze layer, and a method of manufacturing the same. Is to do.

[0004]

According to the present invention, in order to solve the above-mentioned problems, a coloring glaze layer is formed on the surface of a ceramic body, and the coloring component in the glaze layer comprises an amorphous component. The surface roughness Ra of the glaze layer surface is 0.07 μm by a stylus type surface roughness measuring device (JIS-B0651).
m is provided. In the conventional sanitary ware, it was observed that tree-shaped zircon particles protruded on the outermost surface. This was measured by measuring the surface roughness (Ra) of the conventional sanitary ware surface by a stylus type surface roughness measuring device (JIS-B0651) to 0.1 μm.
It is considered that this was the main cause that the degree of smoothness was limited. In the present invention, in order to eliminate the cause, the coloring component in the glaze layer is made of an amorphous component instead of a crystalline component such as zircon particles. As a result, the surface roughness (Ra) of the sanitary ware surface has an unprecedented smoothness of less than 0.07 μm by a stylus-type surface roughness measuring device (JIS-B0651), and as a result, The pottery surface has an unprecedented property of removing dirt by washing with water. In addition, the sanitary ware of the present invention includes, for example, a preparation step of preparing a glaze raw material, an application step of producing the glaze raw material coating by applying the glaze raw material to the surface of the ceramic molding base, and applying the glaze raw material coating to 800 to In a basic manufacturing method including a firing step of forming a glaze layer by firing at a temperature of 1300 ° C., a color component in the glaze material can be dissolved in an amorphous component forming the glaze layer in the firing step. It can be produced by using a pigment. Here, as the pigment that can be dissolved in the amorphous component forming the glaze layer in the firing step, for example, tin oxide or the like can be used.

[0005] In a preferred embodiment of the present invention, a colored glaze layer is formed on the surface of the ceramic body, and the glaze layer substantially comprises an amorphous component, and the amorphous component is at least a SiO2 component. The glaze contains an Al2O3 component, a divalent metal oxide component, an alkali metal oxide, and a colorant component, and does not include a crystal component in the glaze, or a quartz particle having a particle diameter of less than 10 μm and / or an antibacterial agent as a crystal component. A sanitary ware characterized by containing only particles is provided. By making the SiO2 component the main component as the amorphous component forming the glaze layer, the sanitary ware can be manufactured by applying the glaze material to the pottery molding base and firing it only once, as in the conventional case. Here, the SiO2 component in the glaze layer is preferably 55 to 55.
80 parts by weight. Further, when the quartz particles remained on the surface of the sanitary ware after firing, it was observed that the portion formed a concave portion. This concave portion affects Ra similarly to the projecting portion formed by the zircon (however, the influence is small as compared with the zircon). In particular, when the particle size of the remaining quartz particles is large, the influence on Ra is large. Therefore, in the present invention, from the above viewpoint, the particle size of the remaining quartz particles is set to 10 μm
Less than. In addition, even if a small amount of an antibacterial agent such as silver, copper, or zinc is added, Ra is hardly affected, and antibacterial properties are imparted to the sanitary ware surface. Therefore, a trace amount of antibacterial agent may be added to the glaze layer. The preferred amount of antimicrobial agent here is 0.1-5% by weight with respect to the glaze. In addition, the sanitary ware of the present invention includes, for example, a preparation step of preparing a glaze raw material, an application step of producing the glaze raw material coating by applying the glaze raw material to the surface of the ceramic molding base, and applying the glaze raw material coating to 800 to In a basic manufacturing method comprising a firing step of forming a glaze layer by firing at a temperature of 1300 ° C,
The raw material of the component constituting the network forming body in the amorphous component at least after firing in the glaze raw material has an average particle size of 10 μm.
It can be produced by using a crystalline raw material and / or an amorphous raw material of m or less.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention can be used for sanitary ware such as toilets, urinals, washbasins, handwashers, and the like. In the case of toilet bowls, ball surfaces, traps, rim back, etc., in the case of urinals, ball surfaces, traps, sana, etc. Application is also effective.

In the present invention, the glaze raw material refers to a raw material capable of forming a glaze layer by firing typified by a mixture of natural mineral particles such as silica sand, feldspar, and limestone. Can be configured. The coloring component is a design-imparting component containing a pigment and an emulsifier. The pigment is, for example,
Cobalt compounds, iron compounds and the like, and the emulsifier is, for example, zircon, tin oxide and the like. The amorphous raw material refers to a raw material obtained by melting a glaze raw material composed of a mixture of natural mineral particles and the like at a high temperature and vitrifying the raw material, for example, frit and amorphous silica can be suitably used. .

In the present invention, first, a glaze raw material is prepared. As the glaze raw material, silica sand, feldspar, limestone or the like having a size of 10 μm or less is selected. Further, frit or amorphous silica may be partially added. In addition to these main raw materials, a pigment that can be dissolved in the amorphous part of the glaze, for example, a zirconia-eliminated pigment or tin oxide as an emulsifier, is added in order to achieve a desired coloration. Is added, ground with a ball mill or the like, and mixed to obtain a desired glaze.

Then, the surface of the molded sanitary ware is glazed with the above glaze to form a surface smoothing functional layer.
Here, as a method for applying the glaze, a well-known method such as spray coating, flow coating, and printing can be used.

Thereafter, by firing at a temperature of 800 to 1300 ° C., the molded body sinters and the glaze layer is melted and solidified to obtain a sanitary ware having excellent surface smoothness.

[0011]

EXAMPLES Specific examples will be described below. (Example 1) Fine feldspar (average particle diameter 9 μm) 20 parts by weight Fine silica sand (average particle diameter 6 μm) 30 parts by weight Silicic frit 10 parts by weight Limestone 15 parts by weight Fine dolomite (average particle diameter 4 μm) 10 parts by weight Fine alumina (Average particle size 8 μm) 5 parts by weight Zinc white 10 parts by weight Pigment (without zirconia) 9 parts by weight (Example 2) Fine feldspar (average particle size 10 μm) 20 parts by weight Amorphous silica 30 parts by weight Limestone 15 parts by weight Fine particles Dolomite (average particle size: 4 μm) 10 parts by weight Fine alumina (average particle size: 6 μm) 5 parts by weight Zinc flower 10 parts by weight Tin oxide 10 parts by weight Pigment (no zirconia) 3 parts by weight (Comparative example) Feldspar (average particle size 3 mm) 25 parts by weight Silica sand (average particle size 1 mm) 35 parts by weight Limestone 15 parts by weight Dolomite 10 parts by weight Zinc white 5 parts by weight Zircon 10 parts by weight Pigment (with zirconia) ) 3 parts by weight

2 kg of the glaze raw material, 1 kg of water and 4 kg of cobblestone obtained from the above Examples and Comparative Examples were placed in a 6-liter pottery pot, and the particle size of the ground glaze slurry was measured using a laser diffraction type particle size distribution meter. Pulverization was performed by a ball mill so that the results were 65% for 10 μm or less and about 50 μm in 50% average particle size (D50).

Next, a 70 × 150 mm plate-shaped test piece and a toilet bowl were prepared using a slurry of a sanitary ware body prepared from silica sand, feldspar, clay, etc., and the glaze slurry obtained as described above was prepared. , By a spray coating method. At this time, the plate-shaped test piece was adjusted so that the thickness of the glaze layer was 0.6 mm. Then 110
A sample and a toilet were obtained by firing at 0 to 1200 ° C.

With respect to the obtained plate-shaped test piece, the glaze surface roughness (Ra) was measured, the color of the glaze was measured, and the appearance defect in production was confirmed. Surface roughness is measured by a stylus type surface roughness meter (JI
S-B0651), the center line surface roughness (Ra) was measured. Glaze coloration and appearance defects in production were confirmed visually.

The results are shown in Table 1. As shown in Table 1, the surface roughness of the sample using the two types of glazes of the example is smaller than that of the comparative example, and the use of fine raw materials is effective for the surface roughness. It is suggested that

With respect to the coloration and appearance, it was confirmed that both of the two examples were satisfactory and exceeded the comparative examples. Regarding the occurrence of defects, no difference was observed between the example and the comparative example. In addition, the same check was performed for the toilet bowl, and it was confirmed that the tendency was the same as that of the test piece.

[0017]

[Table 1]

[0018]

According to the present invention, it is possible to provide a sanitary ware capable of easily removing stains on the surface of the sanitary ware over a long period of time while maintaining the design imparting function of the glaze layer, and a method of manufacturing the same. It becomes possible.

[Brief description of the drawings]

FIG. 1 is a diagram showing an embodiment of the present invention.

[Explanation of symbols]

 1 ... sanitary ware body 2 ... glaze layer using fine material

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Katsuhiro Kawakami 2-1-1, Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Prefecture Totoki Equipment Co., Ltd. 1-1-1 Totoki Kiki Co., Ltd. (72) Inventor Hiroyuki Takada 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Tochiki Kiki Co., Ltd. (72) Inventor Yukinari Matsumoto Kokura, Kitakyushu-shi, Fukuoka 2-1, 1-1 Nakajima, Kita-ku Totoki Kiki Co., Ltd. (72) Inventor Minoru Suda 2-1-1, Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Touchi Kiki Co., Ltd. (72) Inventor Shigeyuki Yamada 2-1-1, Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka F-term (reference) 2D039 AA01 AA04 4G055 AA07 AC00 AC09 BA14 BA33 FA01 FA03 FA07 4G062 AA08 BB06 NN 05 PP01 PP02 PP03

Claims (7)

[Claims] 1. A coloring glaze layer is formed on a surface of a pottery substrate, a coloring component in the glaze layer is composed of an amorphous component, and a surface roughness Ra of the glaze layer surface is a stylus type surface. 0.07μ with a roughness measuring device (JIS-B0651)
m, less than m. 2. A colorable glaze layer is formed on the surface of the pottery substrate, wherein the glaze layer is substantially composed of an amorphous component.
The amorphous component comprises at least a SiO2 component and Al2O3
Component, a divalent metal oxide component, an alkali metal oxide, and a colorant component, wherein the glaze does not contain a crystal component, or as a crystal component, quartz particles and / or antibacterial agent particles having a particle size of less than 10 μm. A sanitary ware characterized by containing only. 3. The surface roughness Ra of the surface of the glaze layer is determined by a stylus type surface roughness measuring device (JIS-B0651).
The sanitary ware according to claim 2, wherein the thickness is less than 07 µm. 4. A preparatory step for preparing a glaze raw material, an applying step for producing a glaze raw material coating by applying the glaze raw material to a ceramic body surface,
The method for producing sanitary ware according to claim 1, further comprising a baking step of forming a glaze layer by baking at a temperature of 1300 ° C., wherein a coloring component in the glaze raw material includes a glaze in the baking step. A method for producing sanitary ware, characterized by using a pigment soluble in an amorphous component forming a layer. 5. A preparatory step for preparing a glaze raw material, an applying step for producing a glaze raw material coating by applying the glaze raw material to a surface of a ceramic body,
The method for producing sanitary ware according to any one of claims 1 to 3, further comprising a firing step of forming a glaze layer by firing at a temperature of 1300 ° C, wherein the glaze material is oxidized as an emulsion component of the coloring components. A method for producing sanitary ware, comprising using tin. 6. A preparing step for preparing a glaze raw material, an applying step for producing a glaze raw material coating by applying the glaze raw material to a surface of a pottery substrate,
The method for producing sanitary ware according to claim 2 or 3, further comprising a firing step of forming a glaze layer by firing at a temperature of 1300 ° C, wherein the mesh in the amorphous component is at least fired in the glaze raw material. A method for producing sanitary ware, wherein a crystalline raw material and / or an amorphous raw material having an average particle size of 10 μm or less is used as a raw material of a component constituting the formed body. 7. A preparing step for preparing a glaze raw material, an applying step for producing a glaze raw material coating by applying the glaze raw material to the surface of a pottery substrate,
The method for producing sanitary ware according to claim 2 or 3, further comprising a firing step of forming a glaze layer by firing at a temperature of 1300 ° C, wherein a coloring component in the glaze raw material includes a glaze in the firing step. A pigment that is soluble in the amorphous component forming the layer is used, and the raw material of the component forming the network forming body in the amorphous component after firing at least in the glaze raw material has an average particle diameter of 10 μm or less. A method for producing sanitary ware, comprising using a crystalline material and / or an amorphous material.