JPS61119680A - External plate made of metal and its production - Google Patents

Abstract

PURPOSE:To produce an external plat made of a metal for building which takes full advantage of the characteristics intrinsic to a metallic blank material by embossing a metallic plat having a surface subjected a bright treatment, corroding the recessed surface part to make said part dark white and allowing a metallic bright surface to remain on the projecting surface part then coating a paint having high clarity over the entire surface. CONSTITUTION:The metallic plate 1 such as stainless steel plate, Al plate or copper plate of which the surface is subjected to the bright treatment is embossed by a convex type roll 4 and a concave type roll 5 to form the projecting surface part 6 and the recessed surface part 7 on the surface. The high-viscosity paint 11 such as coal tar is then transferred only to the projecting surface part 6 of the plate 1 by means of the 1st roller 9, the 2nd roller 10 and the 3rd roller 12. The recessed surface part of the plate 1 is corroded by an etching soln. 13 consisting of FeCl3 and is made dark white. The metallic plate is then passed through the inside of a coal tar soln. 30 of lacquer or thinner and the coal tar on the projecting surface part is removed with brushed rollers to expose the metallic surface. The surface is cleaned by soap water, etc., 32 and thereafter the paint 34 such as lacquer having high clarity is coated over the entire surface. The external plate made of the metal which takes full advantage of the characteristic intrinsic to the metal itself is thus produced.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to exterior panels for buildings.

[Conventional technology and problems to be solved] Galvanized iron plates are used as exterior panels for buildings.

Metal plates such as aluminum plates, copper plates, and stainless steel plates have been subjected to the required bending process and used for roofs and exterior walls, but recently, buildings as a whole have become particularly luxurious and luxurious. It shows the trend of Metal exterior plates are no exception, and although exterior plates with embossed surfaces (surface irregularities) have been proposed, there are still few that fully utilize the characteristics of metal materials.

[Means of problem solving]

The present invention has been made in order to solve the above-mentioned problems, and provides a metal plate in which a concave surface portion and a convex surface portion are formed by embossing on a metal plate surface that has been previously subjected to a brightening treatment. A metal characterized in that only the concave surface part is subjected to an R-etching process to give it a dark white color, the convex surface part retains the bright surface of the metal material, and a coating is formed on the surface of the metal plate with a highly transparent paint. The purpose of this invention is to provide a metal exterior plate and its manufacturing method that can fully utilize the characteristics of the material.

[For creation]

The metal exterior plate of the present invention is constructed as described above, has a brightly treated metal plate surface, is embossed, and only the concave portion of the surface is corroded to give it a dark white color.
By forming a transparent film on the convex surface with a highly transparent paint while leaving the shiny surface of the metal material, it is possible to obtain a metal exterior plate that fully takes advantage of the characteristics of the metal material.

〔Example 〕

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

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

In the figure, (1) is a metal plate such as a stainless steel plate, an aluminum plate, or a copper plate, which is belt-shaped or cut to a required size.

In this embodiment, the processing steps will be explained below using a stainless steel plate as the metal plate (1).

The $1 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 so-called polished stainless steel.

The second step is the step of embossing the metal plate (1) on which the bright surface (3) has been formed in this way, as shown in FIG. In the figure, (4) and (5) are a convex roll and a concave roll, respectively, which have a desired design (D) on their outer peripheral surfaces, and a first roll is placed between the rolls (4) and (5).
By passing the metal plate (1) through the process.

It is embossed. (8) is a convex portion of the metal plate (1) thus formed, and (7) is a concave portion.

In the third step, the acid resistance 11! (8), and this step is illustrated in FIG. In the figure, (9) is the 10th-la, (10) is the 20th-la, and the 10th-la.
A highly viscous paint (11) forming an acid-resistant flu (8) is stored in a predetermined container (35) at the bottom of the la (9).
The paint (1
1) is transferred only to the convex portion (8) of the metal plate (1).

In the example, coal tar is used as the raw material for the paint (11).

The fourth process is a process in which only the concave surface part (7) of the metal plate (1) is subjected to corrosion processing, and this length L is shown in FIG. That is, for example, a corrosive liquid (13) consisting of a 2M iron solution
is ejected from the small hole of the pipe (14) for a certain period of time to corrode the concave surface (7), or the X dispersion (13) is stored in the corrosive liquid tank (15) for a specified period of time. Soak for a minute to corrode. By spraying or dipping the corrosive liquid (13) into the concave surface (7), no change occurs in the convex surface (8), which has been previously treated with an acid-resistant film (8) in the third step, but the acid-resistant The concave portion (7) where the membrane (8) is not applied undergoes corrosion and turns dark white.

The fifth step is a step of peeling off the acid-resistant film (8), and an example thereof is shown in FIG. In this step, 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 metal plate (1 ) A transfer roller (17) and a brushed roller (1 day) for peeling off the acid-resistant film (8) are provided, and the corroded metal plate (1) is moved between these rollers (17) and (18) in a predetermined position. Solution while transferring at speed (30)
The acid-resistant pattern (8) formed on the convex surface portion (6) is peeled off by the chemical action and the brushing action or scratching action by the roller (18).

The 6th process is a process of surface smoothing, and that process is the 5th process.
As shown in the figure. In this step, a cleaning liquid (32) such as soap water or alkaline liquid is stored in a cleaning tank (31), and a transfer roller (19) and a convex part (8) are placed in the tank (31). A roller (20) with a brush that is soft enough not to scratch the metal plate (1) is used to clean and remove various chemical solutions and slag of the acid-resistant film (8) that have adhered to the front and back surfaces of the metal plate (1).

As a result, it is possible to restore the bright surface having the original material color of the metal plate (1) to the convex surface portion (8).

Next, in the seventh step, after the completion of the sixth step, the convex surface portion (
6) and the concave surface portion (7), which has become dark white due to corrosion processing, maintain their characteristics as they are. That is,
As shown in FIG. 6, this is a step of applying a highly transparent paint (34) such as lacquer in a predetermined container (33) to the surface (2) of the metal plate (1). Thereafter, as shown in FIG. 7, the metal exterior plate according to the present invention is completed by drying by leaving it naturally or by heating.

yIJ8 and FIG. 9 are a partial front view and an AA sectional view of the metal exterior plate formed through the above-described steps.

〔effect 〕

The present invention has the above-mentioned configuration, and includes a metal plate whose surface is brightly treated and has a concave part and a convex part formed by embossing, and which is made dark white by etching only the concave part. By leaving the shiny surface of the metal material on the convex surface and forming a coating on the surface of the metal plate with highly transparent paint, we are now able to provide a metal exterior plate that fully utilizes the characteristics of the metal material. Ta. Furthermore, by changing the characteristics of the paint used in the final process, it is possible to provide metal plates that meet various needs such as durability and appearance.

In addition, when using the method for manufacturing a metal exterior plate according to the present invention, it is possible to operate the metal exterior plate continuously using a relatively simple device, so work efficiency is improved, and a homogeneous metal exterior plate can be manufactured in a relatively simple manner. It has many features such as being able to be provided at low cost.

[Brief explanation of drawings]

1 to 7 are schematic explanatory diagrams showing the manufacturing process order of the metal exterior plate according to the present invention, in which FIG. 1 is a schematic side view showing the embossing process, and FIG. 2 is a schematic side view showing the process of embossing, and FIG. Fig. 3 is a schematic side view showing the process of corroding the concave surface, Fig. 4 is a schematic side view showing the process of peeling off the acid-resistant film, and Fig. 5 is a schematic side view showing the process of removing the acid-resistant film. A schematic side view showing the process, FIGS. 6 and 7 are schematic views showing the painting process, FIG. 8 is a partial front view of the finished product, and FIG. 9 is A-A of the same.
FIG. (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), (12)...
roller. (11)...paint, (13)...corrosive liquid, (14)
... Pipe, (1B) ... Liquid tank, (17) ... Roller, (18) ... Roller with brush, (19) ...
Transfer roller, (33)...container.

Claims (3)

[Claims] (1) In a metal plate whose surface is brightly treated and has a concave part and a convex part formed by embossing, only the concave part is corroded to give it a dark white color, and the convex part has a dark white color. A metal exterior plate characterized in that the shiny surface of the metal material remains and a coating is formed on the surface of the metal plate with a highly transparent paint. (2) The metal plate is made of stainless steel. A metal exterior plate according to item 1 of the scope of the request. (3) Concave and convex parts are formed by embossing on a metal plate surface that has been subjected to brightening treatment, and then an acid-resistant film is transferred only to the convex parts, and in this state, a corrosion process is applied, and then the acid-resistant film is 1. A method for producing a metal exterior plate, which comprises peeling off the surface of the metal plate, subjecting the plate to surface preparation, and applying and drying a highly transparent paint in this state.