JPH1025152A - Pottery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce both the product weight and the raw material cost by kneading diatomaceous earth processed by pulverizing with water, forming the resultant kneaded material into a prescribed shape, baking the formed material and providing substrate layers for coating the resultant body and glassy protecting layers for coating the substrate layers. SOLUTION: This pottery comprises a body 11 prepared by kneading diatomaceous earth processed by pulverizing with water, forming the resultant kneaded material into a prescribed shape and baking the formed material, substrate layers 12 for coating the body 11 and glassy protecting layers 13 for coating the substrate layers 12. The pottery is explained by reference to the figure. The body 11 is formed by kneading the diatomaceous earth with water, forming the kneaded material into the prescribed shape and biscuting the formed material. Fine voids are present in the interior of the body 11 to provide a porous material. The whole surfaces of the body 11 are covered with the substrate layers 12 formed by kneading a substrate material, e.g. abrasive grains with water, coating the whole surfaces of the body 11 and then drying the formed coatings. Thereby, the voids are filled to form films. The protecting layers 13 are formed on the whole surfaces of the substrate layers 12 and baked together with the body 11 and the substrate layers 12 to form the glassy films on the whole surfaces. The body 11 is decorated to an optional color or chemically or mechanically protected. A painting 13a may be applied to the surfaces of the protecting layers 13 with a suitable glaze.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a porcelain using diatomaceous earth as a raw material.

[0002]

2. Description of the Related Art Pottery is easy to mold as a raw material,
It is common to use a clay-like raw material that can be dried and fired to form a ceramic.

[0003] That is, in the conventional ceramics, a raw material is kneaded with water to form a green body having a predetermined shape, and then dried and fired to produce a product. In addition, kaolinite,
Halloysite, montmorillonite, pyrophyllite,
High quality clay containing clay minerals such as sericite and talc is used.

[0004]

According to the conventional technique, the reserve of high quality clay as a raw material is limited, so that the raw material price tends to rise and the weight becomes excessively large. There is a problem that handling is troublesome when a large product is formed or when a large number of products are transported.

Accordingly, an object of the present invention is to provide a porcelain which can reduce the raw material cost and reduce the weight of the product by using diatomaceous earth as a raw material in view of the problems of the prior art. It is in.

[0006]

Means for Solving the Problems To achieve the above object, a structure of the present invention comprises a base for kneading crushed diatomaceous earth, shaping it into a predetermined shape and firing, a base layer for covering the base, The gist of the present invention consists of a vitreous protective layer covering the underlayer.

[0007] The protective layer may be painted.

[0008]

According to the structure of the present invention, since the substrate is made of diatomaceous earth, it becomes a porous material having voids inside, and the overall weight can be significantly reduced. Also,
The underlayer can improve the adhesion of the protective layer by clogging the voids on the entire surface of the substrate, and the vitreous protective layer
It is possible to completely eliminate the water absorption of the base and the underlying layer.

The diatomaceous earth is crushed to an appropriate particle size by removing foreign substances, sufficiently kneaded with water to develop a viscosity, then formed into a predetermined shape, air-dried, and dried at about 1,000 to 1,000.
It is unbaked at a firing temperature of about 200 ° C. for 4 to 6 hours to obtain a base.

[0010] As the underlayer, abrasive powder (tonoko) that can be dried to form a film, clay, wrought iron, etc. can be used. The protective layer is formed over the entire surface of the substrate through the underlayer. A glaze that is applied and fired to form a vitreous film is used.

If the protective layer is painted, it is possible to decorate the surface with rich colors, and to express an arbitrary pattern.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

The pottery comprises a substrate 11, an underlayer 12 covering the entire surface of the substrate 11, and a protective layer 13 (FIGS. 1 and 2).

The base 11 is formed by kneading crushed diatomaceous earth with water, forming it into a predetermined shape, and baking it. In addition, the base material 11 at this time has fine voids inside,
It is a so-called porous material. The underlayer 12 covers the entire surface of the substrate 11. The base layer 12 is formed by, for example, kneading a base material such as an abrasive powder with water, applying the base material to the entire surface of the base 11, and drying the base material, thereby clogging the voids on the entire surface of the base 11 and forming a film. The entire surface of the underlayer 12 is covered with a protective layer 13. The protective layer 13 is baked together with the base 11 and the base layer 12 to form a vitreous film on the entire surface of the base layer 12 and decorate the base 11 in an arbitrary color. Can be protected. The surface of the protective layer 13 is provided with a painting 13a. The painting 13a may be partially applied to the surface of the protective layer 13 in an arbitrary pattern with an appropriate glaze, or may be applied to the entire surface of the protective layer 13.

Such a porcelain can be manufactured as follows (FIG. 3).

First, the mined diatomaceous earth is pulverized by a pulverizer such as a crusher ball mill and sieved to adjust the particle size to about 1 mm or less. Thereafter, water kneading for about 10 minutes is repeated three times or more with a clay kneading machine such as a pug mill.
Diatomaceous earth can express appropriate viscosity by sufficiently kneading with water. The water-mixed diatomaceous earth is formed into a predetermined shape according to the product, air-dried, and
The unbaked product is fired at a firing temperature of about 00 to 1200 ° C. for about 4 to 6 hours to obtain a base material 11.

The substrate 11 is subjected to a base treatment by applying a base material such as abrasive powder on the entire surface. The base material may be applied to the entire surface of the base material 11 by adding water and using a brush or the like, or the base material 11 may be immersed in an aqueous solution of the base material. The base material is
By drying, the underlayer 12 can be formed on the entire surface of the substrate 11.

Subsequently, the base material 11 is formed by applying a glaze to the entire surface of the underlayer 12 and further firing the same, whereby the vitreous protective layer 13 can be formed on the entire surface. The firing conditions such as firing temperature, atmosphere, and time may be set optimally depending on the type of glaze used. However, the glaze may be either reducing or oxidizing.

Thereafter, the substrate 11 having the protective layer 13 may be taken out of the kiln and made into a product.

The surface of the vitreous protective layer 13 may be painted 13a, 13a and fired. Further, the upper surface of the protective layer 13 may be subjected to a surface treatment with a coating material such as a silicone resin, an epoxy resin, or a fluororesin to further improve the weather resistance of the product.

The porcelain manufactured in this manner is made of
1 is diatomaceous earth, which is extremely light in total weight and excellent in heat retention and heat insulation. In addition to general uses such as tableware and vases, clay pots using the effect of far infrared rays, It can be suitably used as a heating container such as a pot, a building tile, a wall material, and the like. The underlayer 1
2. A semi-finished product consisting of only the base material 11 without the protective layer 13 has a moderate hygroscopicity and a high deodorizing property, and is particularly suitable as an interior material for building.

[0022]

As described above, according to the present invention, by providing a protective layer via a base layer on a diatomaceous earth base, the base is a porous material having voids therein. In addition, the weight of the product can be reduced, and diatomaceous earth has an excellent effect that the raw material price can be greatly reduced because the reserves of the diatomaceous earth are extremely large, including in the Noto Peninsula of Ishikawa Prefecture.

[Brief description of the drawings]

FIG. 1 is a partial cut-away whole perspective view.

FIG. 2 is an enlarged sectional view of a main part of FIG. 1;

FIG. 3 Manufacturing process diagram

[Explanation of symbols]

 11: Base 12: Underlayer 13: Protective layer 13a: Painting

Claims (2)

[Claims] 1. A porcelain comprising a base material which is obtained by kneading crushed diatomaceous earth with water, forming it into a predetermined shape and firing, a base layer covering the base body, and a vitreous protective layer covering the base layer. 2. The ceramic according to claim 1, wherein said protective layer is painted.