JPH0794348B2 - Inlay decoration material - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inlaid decorative member in which a metal surface is exposed on the surface of a substrate.

[0002]

2. Description of the Related Art An inlaid decorative member is a substrate in which metal is partially inserted. The decorative member of the inlay,
Metals such as copper and iron, wood such as rosewood and amber, or ceramics are used. Gold or silver is used as the metal to be inserted. The most common metal plate inlay as a decorative member for inlaying is manufactured by providing a concave portion on the surface of a substrate which is a metal plate, and hitting gold or silver or the like to insert the concave portion. The inlaid decorative member using the substrate as a ceramic is one in which a concave portion is formed on the surface of the cloth by a pressing die, the concave portion is filled with a different color clay, and the surface is coated with a transparent wax and baked.

This decorative member is placed on the entire surface of the desk table.
Or it is used by embedding it in a part. Further, the inlaid decorative member can be used for door decoration, furniture decoration, and the like.
The inlaid decorative member has the feature that it can be beautifully made of natural stone patterns and glossy metal.

[0004]

The inlaid decorative member manufactured in this manner has the drawback that it takes time to manufacture and the manufacturing cost increases. In particular, if the metal pattern is made complicated, there is a drawback that the manufacturing cost is significantly increased. This is because it takes time to cut the stone material into the shape of the metal part.

The present inventor has, in order to eliminate this drawback,
We have developed a decorative member that is screen-printed with gold or silver paint on the surface of a stone material. By selecting paint, this decorative member can be finished to have a surface state similar to that of the inlaid decorative member. However, no matter how the paint is chosen, it cannot be as glossy as the surface of the metal. Therefore, the image of cheap goods cannot be wiped off.

This drawback can be solved by plating the surface of the stone material with metal, as described in Japanese Utility Model Laid-Open No. 61-164797. This publication describes a technique in which a metal plating layer is provided on the surface of a smoothed stone material by a chemical plating treatment to form a figurine imitating an animal or a person. The present inventor improved the technique described in this publication and prototyped an inlaid decorative member. This decorative member is obtained by printing a conductive layer on a pattern of characters or figures, and plating the surface of the conductive layer with metal. This decorative member can be plated with metal to have the same extremely beautiful luster as metal. The decorative member with this structure can be beautifully decorated with natural stones and shiny metal without cutting a part of the stone as in the past, so it is easy, easy, and inexpensive to mass-produce. There is a feature that can be produced.

This decorative member can be manufactured as follows. The surface of the stone is polished smoothly. A conductive layer is provided on the surface of the stone material. The conductive layer is screen-printed with, for example, a conductive paint and adhered to the surface of the stone material. By the screen printing, the stone material is locally provided with a conductive layer on a portion to be plated with metal. The conductive layer is provided, for example, in a pattern of characters or figures. Firing is performed to remove the organic binder component contained in the conductive layer. The stone material is metal-plated, and the metal plating layer is laminated on the surface of the conductive layer. When metal plating, the stone surface without the conductive layer is not plated. This is because electricity does not flow in the plating process.

Through the above steps, an inlaid decorative member in which a part of stone material has a beautiful metal pattern can be manufactured. The decorative member that can be manufactured in this manner is excellent in that it can have the same surface condition as that of the conventional inlaid decorative member, but it has the drawbacks that it is not durable and that the metal plating easily peels off from the stone surface. The use of the inlaid decorative member in which the metal plating layer is easily peeled off is extremely limited. This is because it cannot be used in areas where things come into contact, such as a desk table.

A technique for preventing peeling of the metal plating layer is described in Japanese Patent Publication No. 2-43707. This publication describes a technique in which a ceramic material is provided with a metal plating layer that is adhesive and strong by treating a racemic material with an alkali metal hydroxide solution, heating and roughening the surface, and then performing chemical plating. This technique can be used for an inlaid decorative member in which a metal plating layer is partially provided on the surface of a stone material. However, the inlaid decorative member having this structure not only takes time to roughen the surface of the stone material, but also cannot be a decorative member having a beautiful surface state. that is,
This is because the roughened stone surface loses its luster. Therefore, it can be used for a decorative member having a metal plating layer provided on the entire surface of a stone material, but cannot be used for a decorative member having a metal plating layer locally formed on the surface of a stone material. No matter how strongly the metal plating layer can be adhered, a product that cannot clean the surface of the decorative member will not be a product.

The present invention was developed for the purpose of eliminating these conventional drawbacks. An important object of the present invention is to provide an inlaid decorative member that effectively prevents the metal plating layer from peeling off by utilizing the recess formed by the stone pattern. Another object of the present invention is to provide a decorative member which can be mass-produced easily and easily at low cost, and which has a very beautiful surface inlaid pattern.

[0011]

In order to achieve the above-mentioned object, a decorative member for inlaying of the present invention has the following constitution.
The decorative member partially exposes a metal surface on the surface of the stone plate 1. The stone plate 1 has irregular recesses 2 formed by a stone pattern on the surface. On the polished surface of the stone plate 1,
The metal plating layer 4 is formed via the conductive layer 3.

Marble is the most suitable stone for the slab 1 having irregular recesses 2 depending on the stone pattern. Marble is a natural stone made up of a myriad of small blocks and has a unique pattern. There is a streak-like recess 2 between the small blocks. The recess 2 is made naturally. The irregular recesses 2 formed naturally prevent peeling of the metal plating layer 4 that enters there.

[0013]

In the decorative member of the inlay according to the present invention, a stone plate 1 having irregular recesses 2 formed by a stone pattern is used as a stone material. Part of the conductive layer 3 and the metal plating layer 4 laminated on the surface intrudes into the irregular recesses 2 of the stone plate 1. The conductive layer 3 and the metal plating layer 4, which partially penetrate into the recess 2 of the stone plate 1,
The portion penetrating into the concave portion 2 acts like an anchor, and the conductive layer 3
And the metal plating layer 4 are firmly fixed. Therefore, the conductive layer 3 and the metal plating layer 4 are effectively prevented from peeling off, and can be used for various purposes.

Furthermore, in the inlaid decorative member of the present invention, the surface of the stone plate 1 does not need to be specially processed in order to fix the conductive layer 3 and the metal plating layer 4. This is because the conductive layer 3 and the metal plating layer 4 are attached to each other by utilizing the irregular recesses 2 formed by the stone pattern. Therefore, in order to prevent the conductive layer 3 and the metal plating layer 4 from peeling off, the manufacturing cost does not increase and the beautiful surface pattern unique to the stone material does not deteriorate.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. However, the examples described below exemplify inlaid decorative members for embodying the technical idea of the present invention, and the decorative members of the present invention are not limited to the following.

Further, in this specification, for easy understanding of the claims, the numbers corresponding to the members shown in the embodiments are referred to as "claim column", "action column", and "action column". It is added to the members shown in the section of "Means for Solving the Problems". However, the members shown in the claims are
It is by no means specific to the members of the examples.

The inlaid decorative member shown in FIG. 1 is decorated by providing a metal plating layer 4 on the surface of a stone material. The stone is shown in Figure 2.
As shown in FIG. 3, it has irregular recesses 2 formed by a stone pattern. The stone plate 1 having the concave portion 2 is made by processing marble into a plate shape. Marble is a combination of crystalline limestone, calcite, and is a metamorphic rock of limestone. Marble in which calcite is bonded has a gap at the boundary of calcite. Marble has a unique natural stone pattern due to the arrangement of calcite,
Moreover, the concave portion 2 is provided corresponding to the pattern. Therefore, the marble has the concave portions 2 corresponding to the pattern on the surface without artificially forming the concave portions 2 on the surface.

Instead of natural marble, it is also possible to use a stone material in which natural stone is crushed into particles and bonded in a plate shape with a binder such as concrete. This stone material is manufactured by crushing natural stone into particles having an average particle size of 1 to 5 mm, binding the particles with a binder, and then polishing the surface to be smooth.
Recesses 2 are formed between the crushed stone particles on the surface of the ground stone material. Since the recesses 2 are provided between the stone grains, the amount of binder added is reduced. If there is a large amount of binder added, the stone particles will be embedded in the binder and no gap will be created between the stone particles, but if the amount of binder added is reduced, adjacent stone particles will be joined at the contact points and a gap will be created between the stone particles. You can If the surface of a stone material having a gap is polished, recesses 2 are formed between the stone particles. This stone material has an irregular stone pattern with stone grains, and the recesses 2 are formed by the stone pattern. It is also possible to use a porous material such as concrete as the binder to form the recesses 2 between the stone grains. When the stone particles are bonded with a porous binder and the surface is polished, the recesses 2 are formed between the stone particles by the porous binder. This is because the surface polishing causes porous bubbles to appear on the surface.

Irregular recesses 2 formed by the pattern of stones
In the stone plate 1 having the above, the metal plating layer 4 is laminated on the polished surface through the conductive layer 3. The conductive layer 3 is screen-printed with a conductive paste and applied to the surface of the stone material as shown in FIG. The conductive layer 3 has a metal plating layer 4 on the surface.
When it is formed, it becomes a base electrode. As shown in the enlarged cross-sectional view of FIG. 2, the conductive layer 3 penetrates into the recesses 2 on the stone surface like an anchor and is bonded thereto. When the metal plating layer 4 of characters or figures is provided on the stone material, the conductive layer 3 is printed in the same shape as the metal plating layer 4.

As the conductive paste used for the conductive layer 3, a conductive powder dispersed in a binder, for example, "CCP-4010F manufactured by Okuno Chemical Industries Co., Ltd." is used. The conductive paste uses a screen of 250 to 400 mesh and is applied to the surface of the stone material by screen printing. However, it is not limited to screen printing, and can be applied to the surface of stone with a brush or brush. The conductive paste applied to the stone material is heated at 120 to 150 ° C. for several minutes and dried. Then, it is burned at 400 to 600 ° C. to burn off the binder.

The stone plate 1 provided with the conductive layer 3 is immersed in a chemical copper plating solution to electrolessly copper-plat the surface of the conductive layer 3. A Fehling's formalin bath is used for the electroless copper plating solution. Plating speed is 1.5 μm / hour, film thickness is 0.3-
The plating time is 0.4 μm and the plating time is 10 minutes. Instead of electroless copper plating, silver or nickel may be electrolessly plated.

Electroless copper plating is performed on the electroless nickel plating. The electrolytic copper plating is laminated between the electroless nickel plating and the nickel plating. This electrolytic copper plating is laminated as a base plating layer in order to prevent the nickel plating on the surface from peeling off from the surface of the electroless nickel plating. Copper plating is performed in two steps. The first step uses a copper plating bath in which a 45 g / liter copper sulfate aqueous solution and a 2.5 g / liter sulfuric acid aqueous solution are mixed. Second
The steps are: 200 g / liter copper sulfate aqueous solution and 50 g
An acidic copper plating bath mixed with 1 / liter of a sulfuric acid aqueous solution is used. The current density is 2 A / dm ² . The thickness of electrolytic copper plating is 30 to 40 μm.

On the electroplated copper layer, nickel is further laminated by general electroplating. Nickel plating
240g / l nickel sulfate and 45 nickel chloride
g / l and an aqueous solution of boric acid 30 g / l were mixed and the current density was 2 A / dm ²
Plate for minutes.

Gold is plated on the electric nickel plating. The gold plating was carried out by mixing 20 g / liter of potassium cyanide and 30 g / liter of citric acid to a pH of 5 to 6, a bath temperature of 90 ° C., a current density of 1 A / dm ² , and a plating time of 1
0 minutes.

[0025]

The decorative member of the present invention can realize an extremely beautiful pattern and durability which are not inferior to those of the conventional inlaid decorative member in which metal is partially buried, and the irregular pattern of stones. And the luster of metal, it is possible to mass-produce high-quality products with a beautiful surface pattern easily, easily, and inexpensively. In particular, it has the feature that it can efficiently mass-produce high-quality inlaid decorative members with complicated metal plating. It is because the decorative member of the inlay of the present invention utilizes an irregular pattern of stones to locally intrude the conductive layer and the metal plating layer into the recesses formed by the stone pattern, and at this portion, the conductive layer and the metal plating are formed. This is because the layers are firmly fixed to the surface of the stone plate.

In particular, the inlaid decorative member of the present invention uses the recesses formed by the irregular pattern of stones to fix the conductive layer and the metal plating layer, and therefore improves the adhesive strength between the conductive layer and the metal plating layer. In order to do so, it is not necessary to process the stone plate and it is not necessary to change the surface pattern of the stone plate. For this reason,
For example, by using a stone plate such as natural or artificial marble for the stone plate and providing a metal plating layer on the surface,
It is possible to efficiently provide a metal plating layer having a complicated and sublime pattern that cannot be realized by the conventional inlaid decorative member.
Therefore, the inlaid decorative member of the present invention can be used for applications such as a desk of a desk where a metal plating layer is easily peeled off when used, and can be used as a high-grade decorative member for various applications.

[Brief description of drawings]

FIG. 1 is a perspective view showing an inlaid decorative member according to an embodiment of the present invention.

FIG. 2 is an enlarged sectional view of an essential part of a decorative member for inlaying of the present invention.

[Explanation of symbols]

 1 ... Stone plate 2 ... Recessed portion 3 ... Conductive layer 4 ... Metal plating layer

Front page continuation (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location C23C 18/18 E04F 13/08 A 9127-2E 13/14 101 9127-2E

Claims (1)

[Claims] 1. A decorative member for inlaying, wherein a metal surface is partially exposed on the surface of a base material, wherein the substrate is a stone plate (1), and the stone plate (1) is irregular formed by a stone pattern. It has a polishing surface having a concave portion (2) on the surface, and the polishing surface of this stone plate (1) penetrates into the concave portion (2) and adheres to the conductive layer (3), and this conductive layer (3) Metal plating layer on the surface of (4)
The metal plating layer (4) is formed on the stone plate (1)
Stone plate through the conductive layer (3) that penetrates (2) and adheres to the polishing surface
An inlaid decorative member characterized by being laminated on the surface of (1).