JP2001192866A - Soil-proof glazed product and producing method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a glazed product having wear resistance and allowing an easy removal of aqueous soils such as scum. SOLUTION: In this soil-proof glazed product, a surface glazed layer containing, by weight, MgO of 0.7% or less, preferably 0.4% or less has been formed on the surface of a ceramics base.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a toilet bowl, a urinal,
Sanitary ware such as wash basins, toilet tanks, hand wash basins, toilet bowl sana, tiles, tableware, bowls, cups, insulators, kitchen materials, ceramic materials such as bathroom building materials, bathtubs, wash basins, kitchen materials, bathroom building materials, etc. The present invention relates to a glazed product having excellent antifouling properties and used in a flowing water environment (including a rainwater environment) represented by an enamel product and a glazed cement building material, and a method for producing the same.

[0002]

2. Description of the Related Art It is important for hygiene and aesthetics that the surface of a glazed product such as sanitary ware has an aesthetic appearance and is clean. Further, it is preferable that such a state be maintained for a long period of time. Glazed products such as sanitary ware are subject to oily stains such as feces and sebum, water stains such as water scale and soap scum during use. In order to keep the glazed product hygienic and clean, and to maintain its aesthetic appearance, a detergent such as a surfactant, an acid, or an alkali is attached to a scourer or a brush and strongly rubbed. That is, dirt on the surface is removed by the chemical cleaning power of the detergent and the physical cleaning power of rubbing with a scrub or brush.

[0003]

Among the above-mentioned stains, a method of forming a (condensed) polymerized and cured fluoroalkylsilane layer on the surface of sanitary ware has long been known as a countermeasure against water stains such as water stains. However, in environments with strong water flow such as toilets and wash basins, environments with chemical cleaning with detergents such as acids and alkalis, and environments with physical cleaning with scrubs and brushes, durability such as abrasion resistance is high. It was not sufficient, and the effect could not be exhibited for a long time. Therefore, an object of the present invention is to provide a glazed product having abrasion resistance and easily removing water stains such as water scale.

[0004]

According to the present invention, in order to solve the above-mentioned problems, a surface glaze made of a glaze having a MgO content of 0.7% by weight or less, preferably 0.4% by weight or less on the surface of a ceramic body. Provided is an antifouling glazed product characterized in that a layer is formed. When the MgO content in the surface glaze layer is 0.7% by weight or less, preferably 0.4% by weight or less, descalability is improved. Further, the abrasion resistance is very excellent because it is equivalent to the glaze layer formed based on the conventional glaze composition, and the above function can be maintained for a long time.

In a preferred embodiment of the present invention, the surface roughness Ra of the layer surface is measured by a stylus type surface roughness measuring device (JIS).
100 nm or less, preferably 70 nm
nm or less, more preferably 40 nm or less. By doing so, the dirt becomes less likely to adhere to the surface of the layer, so that the antifouling property against water-based dirt further increases.

In one method for producing a glazed product of the present invention, the MgO content is 0.7% by weight or less, preferably 0.1% by weight.
The method includes a step of applying a glaze of 4% by weight or less to a required portion of the surface of the ceramic molded body, and a step of firing at a temperature of 800 to 1300 ° C.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described below with reference to the drawings. In one embodiment of the present invention, a colored glaze layer 2 is formed on a pottery substrate 1 as shown in FIG. The main component of the glaze layer 2 is an amorphous component, and also contains a small amount of a crystalline component such as an emulsifier and a pigment. The amorphous component includes a tetravalent metal oxide component such as SiO2, a trivalent metal oxide component such as Al2O3,
aO, MgO, ZnO or other divalent metal oxide component, Na2
It is composed of a monovalent metal oxide component such as O, K2O, and Li2O, of which MgO is contained in an amount of 0 to 0.7% by weight. Preferred values of the other components are as follows.
0% by weight, 7 to 17% by weight of CaO, 3 to 15% of ZnO
Wt%, K2O is 1-4 wt%, Na2O is 0.5-
2.5% by weight.

The method for manufacturing the glazed product shown in FIG. 1 can be obtained, for example, by applying a glaze raw material prepared so as to have the above-mentioned composition to a pottery molding substrate and firing it. Here, the glaze raw material refers to a material containing a mixture of natural particles such as silica sand, feldspar, and limestone and / or an amorphous glaze such as a frit glaze and, if necessary, an emulsifier and a pigment.

Here, it is preferable to use any one of the following as a glaze raw material because the surface roughness Ra is preferably 100 nm or less. (1) A raw material obtained by adding a pigment and / or an emulsifier to an amorphous raw material, if necessary. (2) An amorphous raw material is added to 1 part by weight of a mixture of natural minerals such as silica sand, feldspar, and lime. (3) Fine natural minerals having a 50% particle size of less than 6 μm as measured by a laser diffraction type particle size measuring device or the like, if necessary, with a pigment and / or an emulsifier added to a mixture of 100 to 100 parts by weight. Raw materials obtained by adding pigments and / or emulsifiers to the mixture of

In FIG. 1, the pottery base 1 is not limited to the following, but includes, for example, sanitary ware such as a toilet bowl, a urinal, a washbasin, a toilet tank, a handwasher, and a toilet bowl, tiles, and the like. Tableware, teacups, cups, insulators, kitchen components, bathroom building materials, etc.

In FIG. 1, a glaze layer having a MgO content of 0.7% by weight or less, preferably 0.4% by weight or less is formed on the surface of a glazed product, thereby removing scales adhering to the product surface. It becomes easier.

FIG. 1 illustrates the case where the base material is a ceramic body, but the base material may be other metal base material or porcelain base material. Therefore, glaze products are not limited to the following, for example, toilet bowls, urinals, washbasins, toilet tanks, handwashers,
Sanitary ware such as toilet bowl sana, tiles, tableware, bowls, cups, insulators, kitchen members, bathroom building materials, etc., as well as bathtubs, washbasins, kitchen members, bathroom building materials and other enamel products, glazed cement building materials And so on.

[0013]

【Example】

[Table 1]

(Comparative Example) Glazing raw material 2 having the composition shown in Table 1
Kg, 1 kg of water and 4 kg of cobblestone were put into a pot made of ceramic having a volume of 6 liters, and ground by a ball mill for about 18 hours. When the particle size of the glaze slurry obtained after pulverization was measured using a laser diffraction particle size distribution meter, 65% was found to be 10 μm or less, and the 50% average particle size (D50) was found to be 6.2 μm. The glaze slurry obtained here is designated as glaze A.
Next, a 70 × 150 mm plate-shaped test piece was prepared using a sanitary ware base mud show prepared using silica sand, feldspar, clay and the like as raw materials. A sample was obtained by spray-coating glaze A on the plate-shaped test piece and then firing at 1100 to 1200 ° C. The obtained sample was subjected to the following scale test to evaluate the easiness of dropping the scale formed at the draft. As shown in Fig. 2, the water scale test was performed on a sample tilted at about 60 ° once a hour and tap water was allowed to flow from the top of the sample for 1 minute every 1 hour. It was rubbed 20 times with a force of 80 N / m ^{2 using} a scourer to which a toilet detergent containing a polishing agent (Toilet Magic Lin (Kao)) was attached, and it was evaluated whether scale was removed or not. As a result, residual scale was confirmed in the obtained sample, and the scale could not be completely removed.

(Embodiment) A glaze substrate having a composition excluding MgO from Table 1 was prepared by using an electric furnace at 1300-150.
It was melted at 0 ° C. and quenched in water to obtain a glass frit. This was pulverized by a stamp mill to obtain powder 2
Kg, 1.2 Kg of water and 4 Kg of cobblestone were put into a 6-liter pottery pot and ground by a ball mill for about 36 hours. When the particle size of the glaze slurry obtained after the pulverization was measured using a laser diffraction particle size distribution meter,
The following are 65%, and the 50% average particle diameter (D50) is 6.1 μm.
m. The glaze slurry obtained here is designated as glaze B. Next, a 70 × 150 mm plate-shaped test piece was prepared using a sanitary ware base mud show prepared using silica sand, feldspar, clay and the like as raw materials. After the glaze B was spray-coated on the plate-shaped test piece, the sample was obtained by firing at 1100 to 1200 ° C. The obtained sample was subjected to the following scale test to evaluate the easiness of dropping the scale formed at the draft. As shown in Fig. 2, the water scale test was performed on a sample tilted at about 60 ° once a hour, and tap water was poured from the top of the sample for 1 minute every 1 hour. It was rubbed with 80 N / m ² with a scourer and a toilet detergent containing toilet (Toilet Magic Lin (Kao)), rubbed 20 times, and evaluated whether or not scale was removed. As a result, in the obtained sample, the scale was completely removed by rubbing 20 times.

[0016]

[Table 2]

Table 2 shows the evaluation results of the ease of removing the scale of each sample. As described above, by using a glaze having an MgO content of 0.7% by weight or less, preferably 0.4% by weight or less, it becomes easy to remove scales generated during actual use.

[0018]

According to the present invention, it is possible to provide a glazed product having abrasion resistance and easily removing water stains such as water scale.

[Brief description of the drawings]

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

FIG. 2 is a diagram showing a part of a scale removing test apparatus according to an embodiment of the present invention.

[Explanation of symbols]

 1 ... pottery substrate 2 ... glaze layer 3 ... sample 4 ... sample (glazed surface) 5 ... tap water

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tomoyasu Ichiki 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Prefecture Inside Totoki Equipment Co., Ltd. (72) Inventor Masami Ando Nakajima, Kitakyushu-shi, Fukuoka 2-1-1, Totoki Equipment Co., Ltd. (72) Inventor Shin Hayakawa 2-1-1, Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Totoki Equipment Co., Ltd.

Claims (21)

[Claims] 1. The method according to claim 1, wherein the surface of the ceramic body or the surface of the metal substrate is
An antifouling glazed product, wherein a surface glaze layer made of glaze having a gO content of 0.7% by weight or less is formed. 2. The method according to claim 1, wherein the surface of the ceramic body or the surface of the metal substrate is
An antifouling glazed product, wherein a surface glaze layer made of glaze having a gO content of 0.4% by weight or less is formed. 3. The surface roughness Ra of the layer surface is 100 nm by a stylus type surface roughness measuring device (JIS-B0651).
The antifouling glazed product according to claim 1 or 2, wherein: 4. The antifouling glazed product according to claim 1, wherein the surface roughness Ra of the layer surface is 70 nm or less by a stylus type surface roughness measuring device (JIS-B0651). . 5. The antifouling glazed product according to claim 1, wherein the surface roughness Ra of the layer surface is 40 nm or less by a stylus type surface roughness measuring device (JIS-B0651). . 6. The antifouling glazed product according to claim 1, wherein the glazed product is a ceramic. 7. The antifouling glazed product according to claim 1, wherein the glazed product is an enamel product. 8. The anti-fouling glazed product according to claim 1, wherein the glazed product is a glazed cement building material. 9. The antifouling glazed product according to claim 1, wherein the glazed product is sanitary ware. 10. The antifouling glazed product according to claim 1, wherein the glazed product is a tile. 11. The antifouling glazed product according to claim 1, wherein the glazed product is tableware. 12. The antifouling glazed product according to claim 1, wherein the glazed product is an insulator. 13. The antifouling glazed product according to claim 1, wherein the glazed product is a toilet bowl. 14. The antifouling glazed product according to claim 1, wherein the glazed product is a wash basin. 15. The antifouling glazed product according to claim 1, wherein the glazed product is a toilet bowl. 16. The antifouling glazed product according to claim 1, wherein the glazed product is a hand-washing machine. 17. The antifouling glazed product according to claim 1, wherein the glazed product is a toilet bowl sana. 18. The antifouling glazed product according to claim 1, wherein the glazed product is a bathtub. 19. The antifouling glazed product according to claim 1, wherein the glazed product is a kitchen member. 20. The antifouling glazed product according to claim 1, wherein the glazed product is a bathroom member. 21. An anti-glare method comprising a step of glazing a glaze having an MgO content of 0.7% by weight or less on a required surface of a ceramic molding base or a surface of a metal substrate, and firing at a temperature of 800 to 1300 ° C. Manufacturing method of dirty glazed products.