JPH02277627A - Foil pattern panel and preparation thereof - Google Patents

Abstract

PURPOSE:To prepare a foil pattern panel suppressing a metal substrate from rusting and excellent in durability and a qualitative feeling by forming colored bottom coat film and a transparent finish film to the surface of the metal substrate and interposing a foil pattern due to a metal foil between both films. CONSTITUTION:Since a metal substrate 10 is coated with a thick film consisting of bottom coat films 21 - 23 and finish films 25, 26, the generation of rust on the metal substrate 10 can be suppressed for a long time and the transparent finish films 25, 26 can impart deep gloss to the hue of the colored bottom coat films. Further, by interposing a foil pattern 24 under the finish films, an excellent qualitative feeling can be obtained. Since the coating of colored paint and baking treatment are repeated to the metal substrate, the thick tough bottom coat films 21 - 23 can be formed and the foreign matter adhered in a foil setting process is removed by dry baking after a foil is set to the surface of the films 21 - 23 to make it possible to enhance the integrality of the bottom coat films and the finish films 25, 26. Thereafter, since the coating of transparent paint and baking treatment are repeated, a thick tough finish film can be formed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a foil pattern panel used as a wall material for the exterior or interior of buildings, and a method for manufacturing the same.

BACKGROUND OF THE INVENTION Wall materials and ceiling materials for buildings are required to be durable enough to maintain their original appearance at the time of construction, and to have a beautiful appearance that is appropriate for the type and purpose of the building.

In addition to wall materials that are made of natural wood or natural stone that are processed into plate shapes and used as they are, there are also materials that use various types of plywood and rolled steel sheets.In particular, steel sheet panels that use thin sheets of various steel sheets are used in large quantities. It is widely used as something suitable for production. This steel plate panel is made by applying a coating or coating to the surface of the metal substrate for both rust prevention and appearance adjustment purposes, making it thin and strong, so it is light in weight per unit area and easy to handle. It is excellent.

Problems to be Solved by the Invention Although steel plate panels have excellent handling properties, their surface coatings deteriorate over time and cause rust, and their appearance is poor in texture. There has been a problem in that it cannot be widely used for buildings with solid construction or Japanese or Western style buildings that have a solid appearance because their durability and texture do not match.

Therefore, the purpose of this invention is to suppress the occurrence of rust from the metal substrate by using a strong base coat and a transparent finish coat, and to encapsulate a foil pattern between the base coat and the finish coat. By doing so, it is an object of the present invention to provide a foil pattern panel that is excellent in both durability and texture, and a method for manufacturing the same.

Means for Solving the Problems The first aspect of the invention to achieve this object is to form a colored base coating film and a transparent finishing coating film on the surface side of a metal substrate, and to form a transparent finish coating film between the two coating films. The gist is that a foil pattern made of metal foil was applied to the surface.

In addition, the configuration of the second invention is such that a base coating film is formed by alternately applying colored paint and baking a plurality of times on a metal substrate, and a foil is placed on the surface of this base coating film. The gist of the method is to draw a foil pattern, air-bake it, and then apply and bake a transparent paint over the foil pattern several times alternately to form a finish coating.

According to the structure of the first invention, the metal substrate is covered with a sufficiently thick coating film consisting of the base coating film and the finishing coating film, so that the generation of rust from the metal substrate can be suppressed for a long period of time. I can do it. Further, the transparent finish coat can impart deep luster and luster to the color tone of the colored base coat.

Furthermore, the foil pattern coated under this finishing coating can eliminate the poor texture that accompanies conventional steel plate panels, and depending on the shape of the foil pattern, it can be used for both Japanese-style buildings and Western-style buildings. It can be made to harmonize well.

Further, according to the configuration of the second invention, by repeating the coating and baking processes, a thick and robust base coating film can be formed, and by placing a foil on this surface and then baking it. Since foreign matter adhering to the base coat during the foil placement process can be removed, the integrity of the base coat and the finish coat can be improved. Thereafter, by repeating the application of the transparent paint and the baking process, a thick and durable finish coat can be formed on the base coat.

Example Examples will be described below with reference to the drawings.

The foil pattern panel is formed by forming a coating film 20 with foil patterns 24, 24, etc. on the surface 10A of the metal substrate 10 (FIGS. 1 and 2).

The metal substrate 10 is a rolled steel plate electrically bonded with a rust-preventing metal such as zinc, and its strength is increased by stamping it into a rectangular shape with flanges 11, 11... protruding from the periphery. . In addition, the flanges 11.11... have small holes 11a, lla... for fixing to the base material of the building.
・is formed.

During baking, the coating film 20 consists of a base coat 21, 22, 23 and a finish coat 25, 26 (FIG. 2).
22 and 23 are made of three layers of colored melamine resin paint, and have sufficient thickness and deep color. In addition, the finishing coats 25 and 26 are two layers of transparent melamine resin paint, and the base coat 25 and 26 are made of two layers of transparent melamine resin paint.
By thickly covering the surface of 1.22.23, the base coating film 21.22.23 is given luster and luster.

Top layer of base coat 21, 22, 23 and finish coat 25
．． Foil patterns 24, 24, . . . are filled in between the layer 26 and the lower layer. Foil pattern 24.24... is gold leaf,
A pattern of any type is drawn using metal foil such as silver foil, tin foil, or Western foil (Fig. 1), and the base coating film 21.2
Between the deep color of 2.23 and the transparent finish coat of 25.26, it has a lacquer-like appearance, and by selecting the pattern, it can be finished in either Western or Japanese style. Note that the foil patterns 24, 24, . . . may be made of one type of metal foil, or may be a mixture of two or more types of metal foil.

As for the baking film 20, the same finish can be obtained by using thermosetting acrylic resin paint or the like in addition to melamine resin paint. In addition, since the metal substrate 10 is treated with gold, its back surface 10B exhibits sufficient durability even without coating, but its durability can be further improved by appropriately coating the back surface 10B. can be directed.

Such foil pattern panels are used by being attached to the walls of buildings, etc. For pasting the foil pattern panel, use the flange 11.11...
・Using the small holes 11a, lla, etc. provided in .

After installing the foil-patterned panels as close as possible to each other, pour the joint material onto the flanges 11, 11..., and the installation process can be completed simply by covering the parts. , it is also possible to overlap the flanges 11.11 of adjacent foil-patterned panels. In the latter case, it is preferable to prepare foil pattern panels whose side surface thicknesses differ by an amount equivalent to the thickness of the metal substrate 10 so that there is no height difference between the surfaces of adjacent foil pattern panels. Flange 11
．． 11, the joint width between the foil pattern panels can be minimized, so the wall surface can be finished more neatly.

In the above description, it is assumed that the metal substrate 10 may be a rolled steel plate without a joint, or may be a metal plate or a non-metal plate made of any other material.

Such a foil pattern panel is produced by performing a base coating film forming process (1), a foil placing process (2), a dry baking process (3), and a finishing coating film forming process (4) on the metal substrate 10. (Figure 3).

The base coating film forming step (1) is a process for forming a sufficiently thick and robust colored base coating film 21.22.23,
It consists of 5 sub-processes.

First, in the undercoating step (1a), a colored melamine resin paint is sprayed on the surface 10A of the metal substrate 10, and in the step (1b), the colored melamine resin paint is sufficiently baked in an atmosphere of about 120°C. One layer of base coating film 21 can be formed. Next, in an intermediate coating process (IC), the same type of paint is applied over and over again, and this is baked in a baking process (1d) to form the second layer base coating film 22. . In addition, the conditions for the baking in this process are as follows:
The baking in 1b) may be performed under almost the same conditions as the conditions. After going through the above four-part process, the paint is further coated in an overcoating process (1e) to form a third layer base coat 23.

The foil placing step (2) consists of three parts: a drawing step (2a), a foil placing step (2b), and an excess foil removing step (2C).

In the drawing step (2a), by silk screen method,
Using an epoxy adhesive having sufficient heat resistance, a sketch 24b of foil patterns 24, 24, etc. is drawn on the base coating film 23 of the third layer (FIG. 4). On the other hand, in the next foil placing step (2b), a metal foil 24 such as gold leaf is placed on the sketch 24b.
Paste a.

When placing the foil, the metal foil 24a is adsorbed by a mount PB such as a charged plastic film, pressed onto the sketch 24b, and the mount PB is removed.
4a remains on the metal substrate 10 side by adhering to the sketch 24b.

On the other hand, in the surplus foil removal step (2C) (FIG. 3), the metal foil 24a of the portion other than the part stuck to the sketch 24b is removed.
By peeling off the foil pattern 24 of the same shape as the sketch 24b.
can be obtained.

For those that have completed foil placement, in the dry baking process (3),
Depending on the baking conditions at an ambient temperature of about 100° C., baking treatment for the base coating film 23 of the third layer and thermosetting treatment for the adhesive of the underpainting 24b are performed. At this time, foreign substances such as the solvent that adhered to the surface of the third layer base coating film 23 during the foil placement work are also removed at the same time.

The finish coating film forming step (4) is the base coating film 21.22.2
A step of forming a transparent finish coating film 25, 26 on the surface of 3, which includes an undercoating step (4a) and a baking step (4b).
It consists of five steps: a polishing step (4C), an overcoating step (4d), and a baking step (4e).

Each of these partial steps is equivalent to the corresponding partial step in the base coating film forming step (1). however,
The difference is that the paint used is a transparent melamine resin paint, and that a polishing process (4c) is interposed between the undercoating process (4a) and the topcoating process (4d). Therefore, in this finish coating film forming step (4), a transparent and smooth fourth layer finishing coating film 25 and a fifth layer finishing coating film 26 are formed, and as a result, the foil patterns 24, 24... * is applied between the base coat 23 of the third layer and the finish coat 25 of the fourth layer.

In addition, the base coating film formation process (1) and the finish coating film formation process (
It goes without saying that the number of times of each partial step of painting, baking, and polishing in step 4) may be changed to any number of times other than those mentioned above, if necessary.

Although the above explanation uses a melamine resin paint as the paint, any other heat-drying type paint can be used as the paint.

In this case, the base coating film formation step (1) and the dry baking step (3
) and the finishing coating film forming step (4), the baking conditions of each step shall be changed appropriately depending on the paint used. For example, when a thermosetting acrylic resin paint is used as the paint, the processing temperature in each baking process is preferably about 1509C. However, the temperature in the dry baking step (3) must be lower than the heat resistance temperature of the adhesive used for the sketch 24b.

As described in detail, according to the first invention, a thick coating film is formed on a metal substrate by a base coating film and a transparent finishing coating film, and a thick coating film is formed on a metal substrate, and a thick coating film is formed between the base coating film and the finishing coating film. By applying a foil pattern using metal foil, it is possible to improve durability and achieve a sufficient texture.
Because it is possible to express elegant shapes with foil patterns,
In particular, it has an excellent effect that it can be optimally used as wall material, ceiling material, etc. of buildings that require a dignified atmosphere.

Further, according to the second invention, after placing the foil on the surface of the base coating film made of colored paint, the foil pattern can be painted under the transparent coating film, thereby producing a foil pattern panel that is excellent in both durability and texture. can be manufactured.

[Brief explanation of drawings]

FIGS. 1 and 2 show examples of foil pattern panels, with FIG. 1 being an overall perspective view and FIG. 2 being a partially enlarged sectional view. 3 and 4 show an embodiment of the method for manufacturing a foil pattern panel, FIG. 3 is a block diagram showing the manufacturing process, and FIG. 4 is an enlarged sectional view explaining the foil placement process. 10...Metal substrate 10A...Surface 21.22.23...Base coating film 24...Foil pattern 24a...Metal foil 25.26...Finish coating film

Claims (1)

[Claims] 1) A colored base coat and a transparent finish coat are formed on the surface side of a metal substrate, and a foil pattern made of metal foil is formed between the finish coat and the base coat. A foil pattern panel that is filled with. 2) A base coating film forming process in which colored paint is applied and baked multiple times on the metal substrate alternately, a foil placement process in which metal foil is attached to the surface of the base coating film, and a baking process after foil placement. A method for producing a foil pattern panel, which includes the following steps: and a finish film forming process in which applying transparent paint and baking are alternately performed multiple times.