JPH0469228B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a decorative plate for decorated paintings, certificates of commendation, cards, etc., and a method for manufacturing the same.

[Conventional technology]

Ordinary paintings, certificates of commendation, cards, etc. are made by forming predetermined patterns, figures, characters, etc. (hereinafter collectively referred to as patterns) on sheets of paper or synthetic resin. Therefore, they cannot withstand long-term use, and for example, in the case of a portable card, they are easily bent.

Therefore, in order to improve durability, metal sheets with decorations applied are used in some cases. For example, Japanese Utility Model Application No. 61-71478 introduces a business card in which a pattern is written on the surface of a thin metal plate by recesses, the recesses are painted, and a transparent resin layer is provided on the entire surface. There is.

[Problem to be solved by the invention]

However, if the entire surface of the plate is coated with transparent resin, the material texture of the metal surface cannot be utilized. For example, the etched surface has a satin-like texture with fine irregularities, but by forming a resin layer on this satin-like surface, the flat surface texture gives a shallow impression. Furthermore, the transparent resin layer is easily damaged, and this also reduces the commercial value.

Therefore, in order to make the impression of the satin-like surface and the flat surface more direct, it is conceivable to omit the transparent resin layer and expose the satin-like surface and the flat surface. However, if the metal surface is simply exposed, if the flat surface is scratched, the scratches will be extremely noticeable, unlike scratches on the transparent resin layer. As a result, although the material quality of the metal surface can be utilized, sufficient care must be taken when storing and handling the decorative plate.

The present invention coats a flat metal surface with a hard ceramic film, thereby creating a decorative plate that has a flat part with a glossy color tone and a satin-like surface, and is scratch-resistant, without impairing the feel of the material. The purpose is to provide.

[Means to solve the problem]

In order to achieve the object, the decorative plate of the present invention comprises a stainless steel plate with a glossy surface, a hard ceramic film with a predetermined pattern formed on the glossy surface, and a stainless steel surface made into a satin finish by etching. It is characterized by having

This decorative plate is made by applying a hard ceramic film to a stainless steel plate with a glossy surface, then forming a resist layer on the entire surface, exposing the resist layer to remove unnecessary parts, and creating a resist pattern with a predetermined pattern. The hard ceramic film is manufactured by etching a stainless steel plate having the resist pattern to make the surface of the steel plate without the resist layer satin-like, and then removing the remaining resist to expose the hard ceramic film.

[Effect]

In the decorative plate of the present invention, a hard ceramic film 2 is formed on the surface of a base stainless steel plate 1, as shown in FIG. The surface of the stainless steel plate 1 is finished to a glossy surface by mirror finishing, various polishing finishes, bright annealing, pickling finishing, roll rolling finishing, or the like. The hard ceramic film 2 formed thereon is glossy and has a surface texture that mimics the glossy surface of the base.

The hard ceramic film 2 preferably has a thickness of 500 to 10,000 Å. If this film thickness is less than 500 Å, the scratch prevention effect will be insufficient. In rural areas, if the film thickness exceeds 10,000 Å, it is uneconomical in terms of cost.

In addition, the hard ceramics used are:
Those with color tones depending on the material color such as TiN (gold), ZrN (black), TiC (black), NbO _x , CrO _x ,
SiO _x , Al ₂ O ₃ , ZrO _x , NiO _x , CoO _x , MoO _x ,
Some have color tones due to interference colors such as WO _x .
The latter can be produced by adjusting the thickness of the film to create blue, gold,
It can produce various colors such as red and green. These ceramics have a much higher grade than stainless steel and are less susceptible to scratches and the like. Therefore, even if this hard ceramic surface is exposed and used, the initial excellent smooth and glossy color tone of the surface is maintained for a long period of time.

This hard ceramic film 2 is formed on the surface of the stainless steel plate 1 by a method such as ion plating, plasma CVD, or sputtering.

The surface of the stainless steel plate 1, which is not coated with a hard ceramic film, is etched to have a satin finish. Since this satin-like surface 3 is directly exposed to the outside, its unevenness creates a deep impression. Furthermore, since stainless steel is used as the base material, rust will not occur over a long period of time. In this way, the hard ceramic surface and the satin-like stainless steel surface complement each other, resulting in a decorative plate with strong contrast.

Note that letters, patterns, etc. can also be inked on a part of the surface of the satin-finished stainless steel plate using paint or the like. Alternatively, a decorative plate consisting of a hard ceramic film and a matte stainless steel surface can be immersed in an acid bath to form an oxide film on the matte surface to be colored. At this time,
Since hard ceramics are not oxidized, the initial color does not change, and only the satin-like stainless steel surface is colored by interference color. Furthermore, by changing the dipping time, various color tones such as blue, gold, red, and green can be produced.

The decorative plate thus obtained has a strong impression due to the bright color of the hard ceramic formed on the glossy surface and the dark color of the oxide film formed on the satin-like surface. becomes.

Note that the decorative plates referred to in this specification include paintings, calendars, certificates of commendation, cards, posters, tiles, screens, shutters, blinds, and the like.

〔Example〕

Hereinafter, the features of the present invention will be specifically explained using examples with reference to the drawings.

As the stainless steel plate 1, a plate material measuring 450 mm in length and 370 mm in width was used, which was cut from a bright annealed SUS304 stainless steel strip with a thickness of 0.3 mm. As shown in FIG. 2a, the entire surface of this stainless steel plate 1 was coated with TiN with a thickness of 2000 Å as a hard ceramic film 2 by ion plating.

Next, polyvinyl alcohol + ammonium dichromate (1%) was applied as a resist to the entire surface of the stainless steel plate 1 provided with the hard ceramic film 2, and the thickness was 10 μm as shown in FIG. 2b.
A resist film 4 was formed.

A film 5 having a predetermined pattern was brought into close contact with the resist film 4 and exposed as shown in FIG. 2c. Through this exposure, the resist film 4 becomes
A photosensitive area 4a was formed which was exposed to light corresponding to the pattern of the film 5 and which did not dissolve in the solvent.

The portions of the resist film 4 that were not exposed to light were dissolved and removed in water. As a result, stainless steel plate 1
A resist pattern 4b was formed on the surface of the substrate, as shown in FIG. 2d. Note that the resist may be one in which the photosensitive area 4a is dissolved in a solvent, such as a novolak-based substance (one in which a quinone cyazide molecule is bonded to a carbonic acid resin via a sulfon group).
When using the resist pattern 4b, a resist pattern 4b in which the pattern of the film 5 is reversed is obtained.

An etching solution at a temperature of 50° C. consisting of a 43% aqueous solution of ferric chloride was sprayed for about 10 minutes onto the stainless steel plate 1 on which the resist pattern 4b was formed. As a result, the hard ceramic film 2 is formed in the portion where the resist pattern 4b is not formed.
and stainless steel plate 1 surface are etched,
As shown in FIG. 2e, a satin-like surface 3 was formed. On the other hand, since the surface on which the resist pattern 4b was formed was not exposed to erosion by the etching solution, the initial surface condition was maintained.

When the etching liquid is sprayed onto the surface of the stainless steel plate 1, fresh liquid always comes into contact with the surface. Also,
Foreign substances such as chlorides and ceramic powder generated by etching are constantly removed from the surface of the stainless steel plate 1 by the jet of etching liquid. the result,
The etching reaction on the surface of the stainless steel plate 1 is uniform and rapid. Note that it is also possible to perform etching by a dipping method. In this case,
Flowing the etching solution or applying vibration to the stainless steel plate 1 immersed in the etching solution,
It is preferable to remove foreign matter from the surface of the stainless steel plate 1 and to activate the interfacial reaction.

After the prescribed etching was completed, the resist pattern 4b remaining on the surface of the stainless steel plate 1 was removed using a 10% aqueous solution of caustic soda. the result,
As shown in FIG. 2f, the stainless steel plate 1 has a smooth and shiny hard ceramic coating 2 and a satin-like surface 3. This is the product shown in FIG.

The part where the hard ceramic film 2 was located had a golden color characteristic of TiN, and the satin-like surface 3 had a bright white color characteristic of stainless steel. In addition, since the hard ceramic film 2 is formed on the surface of a bright annealed stainless steel plate, it has a glossy appearance.
Since the satin-like surface 3 was in a matte state, the contrast between the two was strong and it was extremely impressive. Since the hard ceramic film 2 has high hardness and is resistant to scratches, it maintained its initial smooth and glossy surface condition for a long period of time.

Further, both the hard ceramic film 2 and the satin-like surface 3 had sufficient corrosion resistance, and no rust, discoloration, etc. occurred. Furthermore, even if dirt or oil adhered to the surface, it could be easily removed. At this time, even if a detergent was used, the surface condition did not deteriorate.

Decorative plates manufactured in this manner, for example, if they have a pattern such as a painting, are placed in a frame and displayed on a wall or table. Alternatively, it can be used as is. Certificates of commendation can also be kept in a frame or in a booklet format.

〔Effect of the invention〕

As explained above, in the present invention, a hard ceramic coating is applied to the smooth surface of the stainless steel plate, and the other parts have a satin-like surface.
Therefore, the pattern drawn on the surface has a strong contrast, making it an extremely impressive decorative plate. Moreover, since the surface is made of hard ceramics and stainless steel, it has excellent durability and can withstand long-term use. Furthermore, by changing the type of hard ceramic, it is possible to freely select the color tone of the pattern.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a decorative plate according to an embodiment of the present invention, and FIG. 2 is a diagram explaining the manufacturing process of the decorative plate in the order of steps.

Claims (1)

[Claims] 1. A stainless steel plate having a glossy surface, a hard ceramic film with a predetermined pattern formed on the glossy surface, and a stainless steel surface made into a satin finish by etching. decorative plate. 2. Apply a hard ceramic film to a stainless steel plate with a glossy surface, then form a resist layer on the entire surface, expose the resist layer to remove unnecessary portions of the resist, and form a resist pattern with a predetermined pattern. A method for manufacturing a decorative plate, which comprises etching a stainless steel plate having a resist pattern to make the surface of the steel plate without a resist layer satin-like, and then removing the remaining resist to expose the hard ceramic film.