JPS6328989B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a metal exterior plate for a building and a method for manufacturing the same.

[Conventional technology]

BACKGROUND ART Conventionally, metal plates such as galvanized steel plates, aluminum plates, copper plates, and stainless steel plates have been subjected to a required bending process and used for roofs and exterior surfaces as exterior panels for buildings. Also,
As a metal exterior plate, one in which a concave portion and a convex portion are formed on the surface by embossing has been proposed.

[Problem that the invention seeks to solve]

In recent years, buildings have become more luxurious, and roofs,
Metal exterior plates used for exterior surfaces are also required to be luxurious and gorgeous.

However, the above-mentioned conventional exterior metal plates, including those with embossed finish, still do not fully utilize the characteristics of the metal materials used, and the problem is that they do not meet the above-mentioned demands, especially in terms of color. The dot was hot.

The present invention solves the above-mentioned problems, is gorgeous, has excellent colors, makes full use of the characteristics of the metal material used, is highly durable, and is suitable for use on roofs and exterior walls. The object of the present invention is to provide a metal exterior plate that does not cause any problems, and a method for manufacturing the same that allows the exterior plate to be obtained with good workability and at low cost using relatively simple equipment.

[Means for solving problems]

The metal exterior plate according to the present invention has a concave part and a convex part formed by embossing on the surface of a metal plate such as a stainless steel plate, an aluminum plate, or a copper plate, the surface of which has been subjected to a brightening treatment. The concave part has a colored surface unique to the oxide of the metal used due to corrosion processing, and the convex part has the shiny surface of the metal plate remaining, and the entire surface of the metal plate is coated with a protective coating of highly transparent paint. It is characterized by the formation of

Further, the method for manufacturing a metal exterior plate according to the present invention includes forming a concave surface portion and a convex surface portion by embossing on the surface of a metal plate, such as a stainless steel plate, an aluminum plate, or a copper plate, whose surface has been subjected to a brightening treatment. a step of transferring and adhering an acid-resistant film to the convex surface portion,
A step of corroding the surface of the metal plate to form a colored surface unique to the oxide of the metal used only on the concave portions; a step of peeling off the acid-resistant film and smoothing the convex portions; It is characterized in that the steps of applying a highly transparent paint to the entire surface and drying it to form a protective film are performed in the above order.

[Effect]

The metal exterior plate of the present invention is constructed as described above, and of the embossed concave and convex portions of the metal plate whose surface has been subjected to brightening treatment, only the concave portion is corroded. For example, if the metal used is stainless steel, it will be dark white, and if it is copper, it will be blue-black.The concave surface will be the colored surface unique to the oxide of the metal used, and the convex surface will be the bright surface of the metal plate. As a result, the color and gloss of the concave and convex parts are different, so the color is richer and the uneven pattern is emphasized, and the characteristics of the metal material used are fully expressed. Moreover, since the entire surface of the metal plate with the concave and convex portions is covered with a highly transparent protective film, the difference in color and gloss between the concave and convex portions can be seen from the outside. This not only makes it visible, but also prevents the convex surface from oxidizing and becoming a color similar to that of the concave surface, or from losing its luster, creating a good appearance that fully utilizes the characteristics of the metal material used over a long period of time. In addition, the metal plate only needs to be brightened, embossed, and corroded, and there is almost no deterioration in the rigidity of the metal plate, so it is comparable to conventional products and can be bent during use. Can be roof surface,
There is no problem in using it on external walls.

The method for manufacturing a metal exterior plate of the present invention is configured as described above, and the brightening process, embossing process, and corrosion process themselves can be performed using relatively simple equipment that has been used conventionally, and the process prior to the corrosion process The adhesion of the acid-resistant film is transferred to the convex surface, and the peeling of the acid-resistant film after corrosion processing only needs to be done on the convex surface, making it easier to work with and more efficient than corroding only the convex surface. The metal exterior plate of the present invention described above can be obtained at low cost.

〔Example〕

Hereinafter, an example in which a stainless steel plate is used as the metal plate will be described with reference to the drawings.

FIG. 1 to FIG. 7 are schematic explanatory diagrams showing the manufacturing process of the metal exterior plate according to the present example in order of process.

In the figure, 1 is a metal plate made of stainless steel, 2 is the surface of the metal plate 1, and 3 is a bright surface.

The first step is a step (not shown) in which the surface 2 of the metal plate 1 is previously polished to form a bright surface 3 to form what is called polished stainless steel.

In the second step, the bright surface 3 is formed on the surface as described above.
This is a step of embossing the metal plate 1 on which the wafer is formed, as shown in FIG. In FIG. 1, 4 and 5 are a convex roll and a concave roll, respectively, which have a desired pattern D on their outer peripheral surfaces, and between these rolls 4 and 5, the metal plate 1 that has undergone the first step is passed. This is how the embossing process is applied. 6 is a convex portion of the surface of the metal plate 1 formed in this way;
7 is a concave portion.

The third step is a step of transferring the acid-resistant film 8 only to the convex surface portion 6 of the metal plate formed as described above, and this step is illustrated in FIG. In FIG. 2, 9 is a first roller, 10 is a second roller, and under the first roller 9, a highly viscous paint 11 that forms the acid-resistant film 8 is stored in a predetermined container 35. The paint 11 is well kneaded by the first roller 9 and the second roller 10 and transferred to the third roller 12, and is transferred only to the convex surface portion 6 of the metal plate 1. In the embodiment, coal tar is used as the raw material for the paint 11.

The fourth step is a step in which only the concave surface portion 7 of the metal plate 1 is subjected to corrosion processing, and this step is shown in FIG. That is, the corrosive liquid 13 made of the second iron chloride solution is sprayed from the small hole of the pipe 14 for a certain period of time to corrode the concave surface 7, or the corrosive liquid 13 is stored in the corrosive liquid tank 15 and the required amount is The metal plate 1 is immersed and corroded. Due to the above-described spraying or dipping treatment with the corrosive liquid 13, no change occurs in the convex surface portion 6 to which the acid-resistant film 8 was previously applied in the third step, but the concave surface portion 7 to which the acid-resistant film 8 is not applied is caused. As a result of corrosion, it changes to the dark white color unique to stainless steel, forming a colored surface.

The fifth step is a step of peeling off the acid-resistant film 8, and an example thereof is shown in FIG. In this process, a solution 30 such as lacquer or thinner for dissolving the acid-resistant film 8 is poured into a predetermined liquid tank 16, and a roller 17 for transporting the metal plate 1 and a roller 17 for transporting the metal plate 1 and a A brushed roller 18 for peeling is provided, and these rollers 17,
The concave surface portion 7 was formed on the surface of the convex surface portion 6 by the chemical action of the solution 30 and the brushing or scratching action of the roller 18 while moving the corroded metal plate 1 between 18 at a predetermined speed. The acid-resistant film 8 is peeled off.

The sixth step is a surface smoothing step, and this step is shown in FIG. In this step, a cleaning solution 3 such as soapy water or alkaline solution is placed in the cleaning tank 31.
2 is stored, and the various chemical solutions attached to the front and back surfaces of the metal plate 1 are removed by the transfer roller 19 provided in the tank 31 and the roller 20 with a soft brush that does not scratch the convex surface part 6. This is to clean and remove residues from the acid-resistant film 8 and the like. Thereby, it is possible to restore the bright surface having the original material color of the metal plate 1 to the convex surface portion 6.

Next, in the seventh step, after the completion of the sixth step, the characteristics of the convex surface portion 6 of the metal plate 1, which has regained the original bright surface 3 of the metal material, and the concave surface portion 7, which has become dark white due to corrosion processing, are maintained as they are. This is a process to maintain it. That is, as shown in FIG. 6, a highly transparent paint 34 such as lacquer is placed in a predetermined container 33.
This is a step of coating the surface 2 of the metal plate 1 to form a protective film. Thereafter, as shown in FIG. 7, the metal exterior plate according to the present example is completed by drying by leaving it naturally or by heating.

Figures 8 and 9 are a partial front view of the metal exterior plate obtained through the above-mentioned steps and its A-
It is an A sectional view.

In addition, in the above-mentioned embodiment, a case was explained in which a stainless steel plate was used as the metal plate, but the present invention can apply a brightening treatment to the surface of a copper plate, an aluminum plate, etc., and can also apply a surface corrosion treatment to the surface. It can also be applied to metal plates that can obtain a color surface unique to the metal used, which is different from that before the lever processing. Then, by etching using an etchant similar to the above-described embodiment, the concave surface can be made into a blue-black colored surface for a copper plate and a dark gray colored surface for an aluminum plate.
Further, depending on the metal used, it is possible that a corrosive solution other than ferric chloride is used.

〔Effect of the invention〕

As explained above, in the metal exterior plate of the present invention, a concave surface portion and a convex surface portion are formed by embossing on the surface of a metal plate whose surface has been subjected to a brightening treatment, and only the concave surface portion is subjected to corrosion processing. By applying the coating to create a colored surface unique to the oxide of the metal used, leaving the bright surface of the metal used on the convex surface, and forming a protective film over the entire surface of the metal plate with highly transparent paint,
The colors and gloss of the concave and convex parts are different, the colors are rich, the uneven pattern is emphasized, and the characteristics of the metal material used are fully utilized. By changing the characteristics of the paint used in the final process, durability and
A metal exterior plate that meets various needs in appearance etc. can be obtained. Furthermore, the exterior plate of the present invention can maintain a good appearance over a long period of time without causing the convex surface to oxidize, discolor or lose its luster, and is also easy to bend during use. The effect is that there is no problem.

In addition, when using the method for manufacturing a metal exterior plate according to the present invention, it is possible to operate continuously using a relatively simple device, so work efficiency is improved, and the metal exterior plate according to the present invention can be manufactured with a uniform The effect is that the exterior plate can be provided at a relatively low cost.

[Brief explanation of the drawing]

1 to 7 are schematic explanatory diagrams showing the manufacturing process of a metal exterior plate according to an embodiment of the present invention in order of process, and FIG. 1 is a schematic side view showing the embossing process, and FIG. 2 is a schematic side view showing the embossing process. is a schematic side view showing the process of transferring the acid-resistant film to the convex surface, FIG. 3 is a schematic side view showing the corrosion process of the concave surface, FIG. 4 is a schematic side view showing the process of peeling off the acid-resistant film, and FIG. A schematic side view showing the surface preparation process, FIGS. 6 and 7 are schematic views showing the painting process, and FIG. 8 is a partial front view of the finished product.
FIG. 9 is a sectional view taken along line A--A of the same as above. 1... Metal plate, 2... Surface, 3... Bright surface, 4
... Convex roll, 5 ... Concave roll, 6 ... Convex surface portion, 7 ... Concave surface portion, 8 ... Acid-resistant film, 9, 10, 1
2...roller, 11...paint, 13...corrosion liquid,
14... Pipe, 16... Liquid tank, 17... Roller, 18... Roller with brush, 19... Transfer roller, 33... Container, 34... Paint.

Claims (1)

[Claims] 1. A metal plate such as a stainless steel plate, an aluminum plate, or a copper plate whose surface has been subjected to a brightening treatment has a concave part and a convex part formed by embossing, and the concave part is formed by embossing. A colored surface unique to the oxide of the metal used is formed through corrosion processing, and the shiny surface of the metal plate remains on the convex surface, and a protective coating of highly transparent paint is formed on the entire surface of the metal plate. A metal exterior plate characterized by: 2 The process of forming concave and convex parts by embossing on the surface of a metal plate, such as a stainless steel plate, aluminum plate, or copper plate, which has been subjected to brightening treatment, and the process of transferring an acid-resistant film to the convex part to cover it. The process of putting it on,
A step of corroding the surface of the metal plate to form a colored surface unique to the oxide of the metal used only on the concave portions; a step of peeling off the acid-resistant film and smoothing the convex portions; A method for manufacturing a metal exterior plate, characterized in that the steps of applying a highly transparent paint to the entire surface and drying it to form a protective film are performed in the above order.