JP3605712B2 - Glaze of ceramic products and ceramic products - Google Patents
Glaze of ceramic products and ceramic products Download PDFInfo
- Publication number
- JP3605712B2 JP3605712B2 JP36018298A JP36018298A JP3605712B2 JP 3605712 B2 JP3605712 B2 JP 3605712B2 JP 36018298 A JP36018298 A JP 36018298A JP 36018298 A JP36018298 A JP 36018298A JP 3605712 B2 JP3605712 B2 JP 3605712B2
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- JP
- Japan
- Prior art keywords
- glaze
- water
- salt
- tile
- soluble inorganic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Compositions Of Oxide Ceramics (AREA)
Description
【０００１】
【発明の属する技術分野】
本発明は、塩焼瓦類似製品等を容易に生産できる液体釉薬、およびこれを用いて得られる陶磁器製品に関する。
【０００２】
【従来の技術とその問題点】
屋根瓦の一種に塩焼瓦というのがある。これは、単窯内に瓦素地を積み上げて窯温を上げ、高温の窯内に瓦素地に向けて食塩を投入し、分解された食塩が瓦素地に付着して釉薬を形成する方法で製造される。
【０００３】
しかし、塩焼瓦は、高く評価されながらも、上記のような独特の製法の故に、厳しい作業環境と多くの経験を要するものであり、今日ではほとんど製造されなくなりつつある。
【０００４】
【発明が解決しようとする課題】
本発明は、上記の実状に鑑み、塩焼瓦と類似の製品、及びその他の附加価値の高い製品を容易に生産できる液体釉薬を提供することを目的とするものである。
【０００５】
【課題を解決するための手段】
陶磁器に使用される通常の釉薬は、フリット、長石、硅石、石灰、顔料等の粉末からなる非水溶性原料を配合し、配合物を湿式粉砕し、泥奬にしたものである。
【０００６】
これ等の釉薬は非水溶性原料が水に懸濁しているのに対し、本発明による釉薬は水溶性無機原料の溶液からなるものであり、液体釉薬であるのが特徴である。
【０００７】
すなわち、本発明による陶磁器製品の釉薬は、食塩と水溶性無機原料を含む水溶液からなることを特徴とするものである。
【０００８】
水溶性無機原料としては、炭酸ソーダ、硝酸ソーダ、炭酸カリ、硝酸カリ等のアルカリ金属塩、水ガラス、ケイ酸カリ等のアルカリ塩高分子電解質が例示される。これらは単独で用いてもよいし、２以上の組み合わせで用いてもよい。液体釉薬は硼酸を含むこともできる。コストの面から水溶性無機原料として炭酸ソーダが最良である。
【０００９】
また、本発明による陶磁器製品の釉薬は、さらに非水溶性原料を２０重量％以内で懸濁状態で含んでいてもよい。
【００１０】
非水溶性原料としては、硼珪酸フリット、長石、硅石、石灰、顔料が例示される。これらは単独で用いてもよいし、２以上の組み合わせで用いてもよい。
【００１１】
釉薬中の食塩および水溶性無機原料の濃度は、それぞれ、好ましくは１０重量％〜飽和濃度、より好ましくは１５重量％〜飽和濃度である。
【００１２】
食塩と水溶性無機原料の重量比は好ましくは２：８〜８：２、より好ましくは３：７〜７：３である。
【００１３】
液体釉薬中の食塩および水溶性無機原料の濃度が低い場合、瓦素地が素焼きしてあると、吸水性が良く、釉薬が素地に吸収され、施釉が短時間にでき効率的である。
【００１４】
本発明による液体釉薬を製造するには、食塩と水溶性無機原料の配合物に水を添加した後、全体をミル引きして水溶液を調製する。
【００１５】
本発明による液体釉薬を用いて陶磁器製品を得る方法を、瓦を例にとって説明する。まず、液体釉薬に瓦素地を浸漬する。この結果、瓦素地が液体釉薬を吸水し、全表面に釉薬が塗布される。乾燥後、瓦素地を生産用トンネル炉でたとえば１１００〜１１５０℃で或いは単窯で１１００〜１１８０℃で焼成する。
【００１６】
液体釉薬中の食塩および水溶性無機原料の濃度が高いと、製品瓦は黒茶色に着色し、濃度が薄いと赤茶色になる。従って所望の色調を得るために、液体釉薬を適量の水で薄めてその濃度を調整するのがよい。また浸漬時間の長短により、色調を調節することもできる。
【００１７】
食塩水単独からなる液体釉薬では着色はあるが食塩が焼成によっても溶融せずに製品表面がざらめ状になってしまう。また、水溶性無機原料単独からなる液体釉薬では、炭酸ソーダ等は焼成によって容易に溶融するが着色が弱い。従って食塩と水溶性無機原料を併用することが肝要である。
【００１８】
素地がＦｅ２ Ｏ３ を３〜６重量％含む有色粘土からなる瓦ないしは練瓦の場合、瓦素地に本発明の液体釉薬を施釉すると、素地中の鉄分の発色が効果的に出て美麗の赤茶色から黒茶色が得られる。
【００１９】
Ｆｅ２ Ｏ３ の少ない素地では着色が弱い。その場合、本発明の液体釉薬に過マンガン酸カリ、硝酸コバルト等の水溶性着色剤、即ち液体顔料を添加して所望の着色を得ることができる。
【００２０】
本発明による液体釉薬は、粘土瓦の他、タイル、磁器など、釉薬を使用する陶磁器製品全般に適用できるものであり、特にＦｅ２ Ｏ３ を含有する有色粘土素地に好適に適用できる。
【００２１】
【発明の実施の形態】
以下に、本発明の実施例を示し、その効果を実証する。
【００２２】
実施例１
１）釉薬の製造
食塩 １００Ｋｇ
炭酸ソーダ １００Ｋｇ
をボールミルに投入し水を４００リッター添加した後、全体を混合粉砕して水溶液からなる液体釉薬を調製した。
【００２３】
２）施釉
１０００℃で素焼きした瓦素地を上記液体釉薬に１分間浸した。
【００２４】
３）焼成
瓦素地を液体釉薬から取り出し後、乾燥し、通常の生産用単窯で１１５０℃ （最高温度）で３時間焼成した。
【００２５】
こうして、塩焼瓦類似の光沢のある赤茶色瓦を得た。
【００２６】
実施例２
釉薬の製造において、食塩１００Ｋｇと水ガラス１００Ｋｇ（粉末）を用いた点を除いて、実施例１と同じ操作を行い、赤茶色瓦を得た。
【００２７】
実施例３
実施例１で調製した液体釉薬１００リットルに、
硼珪酸フリット粉末 １０Ｋｇ
石灰粉 １０Ｋｇ
を添加した点を除いて、実施例１と同じ操作を行い、赤茶色瓦を得た。
【００２８】
【発明の効果】
本発明による陶磁器製品の釉薬は、食塩と水溶性無機原料を含む水溶液からなるものであるので、これを用いることによって、従来の塩焼瓦の製造法にように厳しい作業環境と多くの経験を要することなく、塩焼瓦と類似の製品、及びその他の附加価値の高い製品を容易に生産することができる。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a liquid glaze capable of easily producing a salt-roof-like product and the like, and a ceramic product obtained using the same.
[0002]
[Conventional technology and its problems]
One type of roof tile is a salt fired tile. This is a method in which tiles are stacked in a single kiln to raise the temperature of the kiln, salt is poured into the tiles in a high-temperature kiln, and the decomposed salt adheres to the tiles to form a glaze. Is done.
[0003]
However, salt-roasted tiles, which are highly evaluated, require a severe working environment and a lot of experience due to the above-mentioned unique manufacturing method, and are hardly manufactured today.
[0004]
[Problems to be solved by the invention]
The present invention has been made in view of the above circumstances, and has as its object to provide a liquid glaze that can easily produce products similar to salt-roasted tiles and other products with high added value.
[0005]
[Means for Solving the Problems]
The usual glaze used for porcelain is made by mixing a water-insoluble raw material consisting of powders such as frit, feldspar, silica stone, lime, pigment and the like, and wet-grinding the mixture to form a powder.
[0006]
While these glazes have a water-insoluble raw material suspended in water, the glaze according to the present invention comprises a solution of a water-soluble inorganic raw material and is characterized by being a liquid glaze.
[0007]
That is, the glaze of the ceramic product according to the present invention is characterized by comprising an aqueous solution containing salt and a water-soluble inorganic raw material.
[0008]
Examples of the water-soluble inorganic raw material include alkali metal salts such as sodium carbonate, sodium nitrate, potassium carbonate, and potassium nitrate; and water-glass, and alkali salt polymer electrolytes such as potassium silicate. These may be used alone or in combination of two or more. The liquid glaze can also include boric acid. Sodium carbonate is the best water-soluble inorganic raw material in terms of cost.
[0009]
Further, the glaze of the ceramic product according to the present invention may further contain a water-insoluble material in a suspended state within 20% by weight.
[0010]
Examples of the water-insoluble raw materials include borosilicate frit, feldspar, silica stone, lime, and pigment. These may be used alone or in combination of two or more.
[0011]
The concentration of the salt and the water-soluble inorganic raw material in the glaze is preferably from 10% by weight to a saturated concentration, more preferably from 15% by weight to a saturated concentration.
[0012]
The weight ratio between the salt and the water-soluble inorganic raw material is preferably from 2: 8 to 8: 2, more preferably from 3: 7 to 7: 3.
[0013]
When the concentration of salt and water-soluble inorganic raw materials in the liquid glaze is low, if the tile body is unbaked, the water absorption is good, the glaze is absorbed by the body, and the glaze can be applied in a short time and is efficient.
[0014]
To produce the liquid glaze according to the present invention, water is added to a mixture of salt and a water-soluble inorganic raw material, and the whole is milled to prepare an aqueous solution.
[0015]
A method for obtaining a ceramic product using the liquid glaze according to the present invention will be described using a roof tile as an example. First, the tile is immersed in a liquid glaze. As a result, the tile substrate absorbs the liquid glaze, and the glaze is applied to the entire surface. After drying, the tile body is fired in a production tunnel furnace at, for example, 1100 to 1150 ° C or in a single kiln at 1100 to 1180 ° C.
[0016]
If the concentration of salt and water-soluble inorganic raw materials in the liquid glaze is high, the product tile will be colored black brown, and if the concentration is low, it will be reddish brown. Therefore, in order to obtain a desired color tone, it is preferable to dilute the liquid glaze with an appropriate amount of water and adjust its concentration. The color tone can also be adjusted by adjusting the immersion time.
[0017]
The liquid glaze consisting of saline alone is colored, but the salt is not melted by baking, and the product surface becomes rough. In addition, in the case of a liquid glaze made of a water-soluble inorganic material alone, sodium carbonate or the like is easily melted by firing, but is weakly colored. Therefore, it is important to use salt and a water-soluble inorganic raw material together.
[0018]
In the case of a tile or a tile made of colored clay containing 3 to 6% by weight of Fe 2 O 3 , if the liquid glaze of the present invention is applied to the tile, the color of iron in the substrate is effectively produced and beautiful. A reddish brown to black brown is obtained.
[0019]
Coloring is weak in a base material with little Fe 2 O 3 . In this case, a desired coloring can be obtained by adding a water-soluble coloring agent such as potassium permanganate or cobalt nitrate, that is, a liquid pigment, to the liquid glaze of the present invention.
[0020]
The liquid glaze according to the present invention can be applied to all ceramic products using the glaze, such as tiles and porcelain, in addition to clay tiles, and can be particularly suitably applied to colored clay base materials containing Fe 2 O 3 .
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, examples of the present invention will be shown to demonstrate the effects.
[0022]
Example 1
1) Glaze production salt 100Kg
Sodium carbonate 100kg
Was put into a ball mill, and 400 liters of water was added. Then, the whole was mixed and pulverized to prepare a liquid glaze composed of an aqueous solution.
[0023]
2) Glazing Unglazed roof tiles were immersed in the liquid glaze for 1 minute.
[0024]
3) The fired tile was taken out of the liquid glaze, dried, and fired at 1150 ° C. (maximum temperature) for 3 hours in a normal production kiln.
[0025]
Thus, a glossy red-brown tile similar to a salt-roasted tile was obtained.
[0026]
Example 2
A red-brown tile was obtained by performing the same operation as in Example 1 except that 100 kg of salt and 100 kg of water glass (powder) were used in the production of the glaze.
[0027]
Example 3
To 100 liters of the liquid glaze prepared in Example 1,
Borosilicate frit powder 10Kg
Lime powder 10kg
The same operation as in Example 1 was performed, except that was added, to obtain a red-brown tile.
[0028]
【The invention's effect】
Since the glaze of the ceramic product according to the present invention is composed of an aqueous solution containing salt and a water-soluble inorganic raw material, the use of the glaze requires a severe working environment and a lot of experience like a conventional method of manufacturing a salt-roasted tile. Without this, products similar to salt-roasted tiles and other high value-added products can be easily produced.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36018298A JP3605712B2 (en) | 1998-12-18 | 1998-12-18 | Glaze of ceramic products and ceramic products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36018298A JP3605712B2 (en) | 1998-12-18 | 1998-12-18 | Glaze of ceramic products and ceramic products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000178087A JP2000178087A (en) | 2000-06-27 |
| JP3605712B2 true JP3605712B2 (en) | 2004-12-22 |
Family
ID=18468270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP36018298A Expired - Lifetime JP3605712B2 (en) | 1998-12-18 | 1998-12-18 | Glaze of ceramic products and ceramic products |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3605712B2 (en) |
-
1998
- 1998-12-18 JP JP36018298A patent/JP3605712B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000178087A (en) | 2000-06-27 |
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