JPS622157Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a decorative structure suitable for use as various accessories such as earrings, buttons, pendants, tie pins, etc. The present invention relates to a lightweight decorative structure having artistic value, which is made of ceramic as a base and provided with a painted layer that is painted with a coloring agent and a flux and then fired.

BACKGROUND ART Conventionally, many natural gemstones, imitation gemstones such as artificial rubies and saphires, and ceramics have been used for accessories such as earrings, buttons, and pendants. Among these accessories, for example, natural gemstones, imitation gemstones, etc. are used in various shapes with beautiful three-dimensional appearance, or processed and polished into flat plate shapes and the like. Furthermore, in the field of ceramics, accessories that are made by molding a composition mainly made of clay into a desired shape and then painting beautiful patterns on the fired base material are widely available.

However, when it comes to ceramics, it is extremely difficult to obtain thin pieces with beautiful paintings that are suitable as accessories. When a beautiful pattern or the like is painted on a thin, flat base and fired, the intended pattern may change or the base may become curved and deformed, making it impossible to create the desired accessory. Naturally, beautifully painted ceramic jewelry was either thick or hollow, giving it an extremely heavy feel and large volume, which limited its use as jewelry.

The inventors of the present invention made various efforts to create an accessory that could be decorated with desired beautiful patterns, which had not been achieved with conventional ceramics, and was also thin, flat, and lightweight. discovered that various conventional problems could be solved at once by using thin alumina ceramics with excellent mechanical strength.
This led to the completion of this invention.

An example of the present invention is shown in FIG. 1 as follows.

In FIG. 1, numeral 1 is a flat alumina ceramic substrate having a thickness of 0.2 to 2 mm, and numeral 2 is a painted layer coated on the substrate with a paint containing a coloring agent and a flux.

The flat alumina ceramic substrate 1 with a thickness of 0.2 to 2 mm according to the present invention, for example, is prepared by first adding various metal oxide powders to alumina powder to obtain a raw material powder, and then adding, for example, polyvinyl alcohol, Add a binder such as butyral resin, a plasticizer such as dibutyl phthalate, a dispersant such as glyceryl monooleate, and a solvent such as methyl ethyl ketone or toluene, and knead with a ball mill etc.
The slip cast method involves making a slurry with a high powder content and forming it into a flat sheet on a smooth support such as a polyester film using a so-called doctor blade, or the slip cast method in which a slurry with a high powder content is formed into a flat sheet using a so-called doctor blade, or a slurry made of alumina powder and metal oxide is used. A binder that decomposes and volatilizes during the firing process is added to the raw material powder, and after being formed by a known method such as a press method in which it is formed into a flat sheet by cold pressing, it is dried and made into a flexible sheet. Let's take a certain raw sheet.

Next, for example, after removing the organic components in the raw sheet by pre-firing, the raw sheet is subjected to main firing at a temperature of 1,400 to 1,800°C in an air or hydrogen stream, and the resulting sheet is shaped into any desired size. Cut to shape, drill holes,
It can be obtained by processing such as division.

Of course, it is also possible to process a raw sheet into any desired shape suitable for the decorative structure according to the present invention and use it to form the alumina ceramic substrate 1 through steps such as preliminary firing and main firing.

Therefore, from the viewpoint of the mechanical strength of the alumina ceramic substrate 1, the raw material powder containing the alumina powder is a fine powder of 1μ or less, and the amount of metal oxide powder added to the alumina powder is An amount of 20% by weight or less is preferred, particularly an amount of 6 to 2% by weight. Examples of such metal oxide powder include SiO ₂ , MgO, CaO, Ca ₂ O ₃ , MnO,
Examples include Fe ₂ O ₃ , NiO, CuO, TiO ₂ and the like, and one or more of these can be used.

Note that the base 1 needs to have a thickness of 0.2 to 2 mm and be flat from the viewpoint of mechanical strength and lightness as an accessory.

Alumina ceramics substrate 1 thus obtained
Next, the alumina ceramic substrate 1 is painted with a coloring agent and a flux and fired to form a painted layer 2. However, the painted layer 2 may be provided not only on the front surface of the alumina ceramic substrate 1 but also on the back surface if necessary.

In the present invention, "firing" refers to a heating and fusing operation that includes one or more of so-called Yu-yaki, Hon-yaki, and Over-e-yaki. ``Coloring agent'' refers to the pigment used in ``fu-e-zuki'', ``yugake'', and ``over-glaze'', and ``flux'' refers to the operation of ``yukake'' and ``over-glaze'' (such as ``yukou'' and ``kiretsu-yu''). A substance that has the effect of promoting melting of a composition such as a pigment at a temperature lower than its melting point.

As the coloring agent that is a component of the painted layer 2, one or more known coloring agents can be used as appropriate depending on the purpose of use of the decorative structure according to the present invention without any particular restriction. In view of their affinity with the alumina ceramic substrate 1, fine powders of metal oxides such as copper oxide, iron oxide, manganese oxide, cobalt oxide, chromium oxide, and nickel oxide are suitable. Also,
The fluxing agent, which is another component, can be used without any particular restrictions in the same way as the coloring agent, but silica, feldspar,
Lime, soda carbonate, zinc oxide, tin oxide, barium oxide are preferred.

An example of a method for providing the painted layer 2 on the alumina ceramics substrate 1 is as follows.

To obtain the desired color, put the coloring agent and flux into a grinder, add water, grind thoroughly, and dry to make paint. Next, take the paint on a glass plate,
After sufficiently rubbing the "Funori" that has been removed with a small amount of water, it is applied to the ceramic substrate 1, the paint is dried, and then fired at 700 to 800 ° C. in an electric kiln etc.
A painted layer 2 is provided.

Alternatively, to decorate with delicate patterns or lines, apply glue or gelatin on the ceramic substrate 1 in advance.
On top of this, lines are drawn using a liquid made by rubbing manganese, cobalt, red patterns, etc. with water, a picture pattern is drawn, and the paint is colored using the above-mentioned paint.
It is also possible to provide a painted layer 2 that is fired and decorated.

Furthermore, it can also be decorated with gold or silver. Furthermore, if desired, the painted layer 2 can be provided with a covering layer of, for example, a transparent synthetic resin.

Hereinafter, the present invention will be explained in more detail with reference to Examples, but the present invention is not limited thereto.

Example 1 Fine powders of 96.5% by weight of alumina, 1.5% by weight of SiO ₂ , 1.0% by weight of MgO, and 1.0% by weight of CaO were mixed to prepare a raw material powder. For 100 parts by weight of this raw material powder,
4 parts by weight of dibutyl phthalate, 0.6 parts by weight of glyceryl monooleate, 7 parts by weight of polyvinyl butyral, and 34 parts by weight of methyl ethyl ketone-toluene solvent were blended and kneaded in a ball mill, and a flat green sheet with a thickness of 1.5 mm was made using the slip cast method. I got it. After drying this, the shape obtained by punching out with a circular mold with a diameter of 20 mm (however, the upper part of the circle should be 3 mm
φ hole) was pre-fired and heated to 1600
The main firing was carried out at 0.degree. C. to obtain a flat alumina ceramic substrate 1 having a thickness of about 1.5 mm and a diameter of about 2 cm.phi.

First, add 1g of "Niwaka" and water to both sides of this base 1.
Apply "niwaka liquid" made by boiling and melting 200 c.c.
After drying, a thin film of ``Niwaka'' was formed, and on top of this, paints made from copper oxide and silica, and iron oxide and silica were dissolved in ``Funori'' and water, and patterns were drawn with a brush and dried. Thereafter, it was fired in an electric kiln at about 800°C for 5 hours to form a painted layer 2 decorated with blue and red colors, thereby obtaining the decorative structure of the present invention.

The thus obtained decorative structure having an alumina ceramic base was aesthetically superior and lightweight, making it suitable as a pendant.

[Brief explanation of the drawing]

FIG. 1 shows a sectional view of one embodiment of the decorative structure of the present invention. 1... Alumina ceramics base, 2... Painted layer.

Claims (1)

[Claims for Utility Model Registration] (1) A decoration characterized in that a flat alumina ceramic substrate 1 with a thickness of 0.2 to 2 mm is provided with a painted layer 2 that is painted with a coloring agent and a flux and fired. Structures for use. (2) Utility model registration claim No. 1 in which the coloring agent is one or more selected from the group consisting of copper oxide, iron oxide, manganese oxide, cobalt oxide, chromium oxide, and nickel oxide. Decorative structure according to item 1. (3) The flux is silica, feldspar, coal, soda carbonate,
The decorative structure according to claim 1, which is a utility model registered, and is made of one or more selected from the group consisting of zinc oxide, tin oxide, and barium oxide.