JPS59107956A - Color developing and processing method for clay roof tile orlike - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for coloring the surface of clay roof tiles, and provides a novel method for easily obtaining high-quality color and gloss without using sludge.

Conventionally, for example, for clay tiles, in order to obtain a thin silver film on the tile surface after firing that does not discolor or fade, a processing method has been used in which the tile base is coated with a glaze and then fired, and there are many known examples such as Japanese Patent Publication No. 52-8962. There is. However, the above-mentioned method of developing color using a yukyu-yaku requires time and effort to mix the yu-yaku, and has the disadvantage of high costs. A method is used in which the surface particles are polished to make them finer and more beautiful, and then fired to develop the silver luster of the ibushi tiles. However, this polishing process requires skill and effort, and is therefore extremely expensive. become.

On the other hand, ``Hake-do'' whose main ingredients are Haname clay or Kibushi clay is commercially available, and this ``Hake-do'' is applied to the inner substrate surface of roof tiles.
There is also a known processing method in which colored gloss is achieved by brush painting, but this method suffers from poor colored gloss and lacks stability and uniformity of colored gloss.

It is an object of the present invention to provide a new processing method that overcomes the above-mentioned conventional drawbacks and provides a high-quality color-emitting effect easily and inexpensively. That is, the present invention is characterized by a method in which a new "hake clay" devised as a result of many years of research by the inventor is applied in a thin film form to the inner base surface of a tile, and then fired to emit colored light.
In detail, the "brush soil" shown below is applied in a thin film form to the surface of clay roof tiles by means such as "sprinkling,""brushing," or "immersion," and after drying, it is reduced, fired, or oxidized. This is a processing method that produces colored light by firing.

- "Hake soil" used in the present invention A: Fishing 1. Of~2. Og 7-minic acid was dissolved in 500 to 1 Qcc of sodium birophosphate solution (0.1 mol/1) or 5 cc to 1 Qcc of loading soda solution (Q, IN), diluted by adding aoocc of water, and further added to the diluted solution. Add a small amount of sodium pyrolinate solution or sodium pyrrolinate solution
I (7.5 to 8.0.) Furthermore, water is added to the solution to produce a humic acid-containing solution with a total amount of 500 QG.

B: Generate 100 y of water drippings of 'i-L clay or Honbushi clay.

C: Generate a mixed solution by thoroughly mixing and stirring the above A and B,
After standing still for 5 to 10 hours, the supernatant was collected and
Obtain "Hake soil".

By the above-described coloring processing method of the present invention, reduction firing produces a silvery luster, and oxidation firing produces a transparent luster, giving the surface of the clay tiles an excellent colored luster.

Next, one embodiment of the present invention will be described with reference to it.

The ingredients of "Hake soil" used in one example are as shown in the table below.

M: 1. The humic acid of sy was added to a sodium birophosphate solution (
0.1 mol/4) 3 cc, diluted by adding 300 cc of water, and further added 5 cc of the sodium birophosphate solution to obtain a solution with pH 7.8, and further water was added to obtain a total amount of 50,000 humins-containing solution. Produces an acid solution.

": Generate 100 FI of commercially available mouthpiece clay.

C'2 The above A' and B' were stirred and mixed and left to stand for about 8 hours.
After that, the supernatant liquid is collected to produce "hake soil".

The "brush clay" was "brushed" onto the white tile base to form a thin, uniform film, and after drying, reduction firing or oxidation firing was performed.

The tiles according to the above embodiments have an extremely beautiful silvery luster or transparent luster, in contrast to tiles made using the conventional method, in which commercially available "hake clay" is applied to a white tile base and fired under the same conditions as described above. We were able to obtain a tile that stably exhibits

This is because when a thin film of the above-mentioned "hake-soil", which uses amine acid, a hydrophilic organic polymer that has a colloidal action to preserve clay particles, is applied to the self-stressed soil of clay roof tiles, the self-sealed soil becomes The surface becomes a thin film in which fine clay particles are preferably oriented, and when oxidized and fired in this state, a transparent hard film is produced, and when reduced and fired, carbon is beautifully oriented on the film, giving it a silvery-white luster. It is assumed that

Therefore, according to the method of the present invention, conventionally known "bake soil"
Compared to the coloring process using the method, it is possible to obtain a more beautiful and stable colored luminescent surface of clay tiles.

In addition, in the above configuration of the present invention, humic acid is
．． 0-2. For example, 3.0 to 4. Even if Of is used, the above-mentioned color emitting effect can be expected. However, for economical reasons, it is approximately 1.0 to 2. Of is preferred.

However, if the above-mentioned values other than the amino acid are exceeded, peeling etc. may occur, which is not preferable. On the other hand, since the thin film may peel off if touched by hands during handling before firing, a small amount of chemical thickening agent (for example, commercially available cerogen) may be added to the "brush clay".

As described above, in the coloring processing method of the present invention, "brush clay" can be produced easily and inexpensively, and it is sufficient to simply apply it to the surface and bake it, and it is possible to obtain a beautiful and stable colored luster. Therefore, it is a very practical and useful coloring processing method.

Claims (1)

[Claims] (1) Dissolve a small amount of amino acid in a small amount of sodium pyrophosphate solution or sodium pyrophosphate solution, and add water aoocc
was added to produce a solution with pH 7.5 to pH 8.0, water was further added to the solution to produce a total amount of 500 cc of an amic acid-containing solution, and the amic acid solution and "elL
Stir and mix 100 g of water sludge made of l-knot or Honbushi clay, leave it to stand for 5 to 10 hours, and then collect the supernatant liquid to produce "No. Coloring processing method for clay roof tiles 0, which is characterized by applying a thin film on the surface of the base material, then drying and firing to develop the color.