JP2001009969A - Decorative paper laminated metal panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a decorative paper laminated metal panel not bringing about a marked feeling of incongruity in hue at the damaged minute part of decorative paper. SOLUTION: In a decorative paper laminated metal panel, decorative paper 4 having a visually recognizable pattern formed to the surface thereof by applying a color different from that of a periphery to the recessed parts and/or projected parts provided to the surface of the decorative paper 4 is laminated to at least the single surface of a metal panel 1 through a self-adhesive or an adhesive and a topcoat layer 6 comprising a water repellent resin film is formed on the surface of the decorative paper 4, the uppermost layer of the metal panel 1 is a colored layer 2 of which the color is same or similar to that of the decorative paper 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite metal plate in which decorative paper having excellent design properties is laminated on a metal plate, and more particularly, to an interior wall material, a floor material, a ceiling material, an interior material, and the like in a house or a structure. Also as building materials such as panels and doors and various furniture,
The present invention relates to a decorative paper laminated metal plate used for exterior members and containers of home electric appliances, interior materials of automobiles and vehicles, and the like.

[0002]

2. Description of the Related Art Various composite materials have been developed for the purpose of imparting a design property to a metal plate. For example, a method of obtaining a beautiful painted metal plate by applying a resin coating on the surface of a plated metal plate or a non-plated metal plate, or by printing a beautiful color or pattern after the resin coating, or hot rolling the metal plate Sometimes, a black oxide film naturally formed on the surface is used, or an artificial oxide film having a dark blue color or other colors is artificially formed on the metal surface, so that a steel plate coated with decorative coatings of various colors or A method for obtaining a titanium alloy plate has been put to practical use. According to these conventional techniques, a metal plate having a beautiful appearance and design can be obtained, but the touch such as the tactile sensation and the coldness does not go beyond the metal plate.

On the other hand, for example, a laminated metal plate on which a film of polyvinyl chloride, polyolefin, acrylic resin or the like is laminated is known, and these laminated plates are mainly intended to improve corrosion resistance and scratch resistance. And few of them are excellent in design. Further, in the case of a laminated metal plate in which processability is regarded as important, since a thermoplastic resin film is used, it is weak to heat. Further, among the laminated metal plates, “PVC steel plates”, which are particularly frequently used, have a risk of causing pollution since they are laminated with a polyvinyl chloride film which generates a toxic gas such as dioxin by burning.

[0004]

SUMMARY OF THE INVENTION As a laminated metal plate free from the risk of pollution caused by such a synthetic resin film, the applicant has applied a decorative paper even though it has been previously attached. In order to provide a decorative paper laminated metal plate capable of maintaining the design property of the decorative paper for a long period of time without impairing the workability of the metal plate, a concave and / or convex portion is provided on the surface, A decorative paper forming a pattern that is visually recognizable by being given a color different from the surroundings on the concave portion and / or the convex portion is laminated on at least one surface of the metal plate via an adhesive or an adhesive. A decorative paper laminated metal plate having a top coat layer made of a water-repellent resin film formed on the outermost layer of the decorative paper laminated surface,
It was proposed in Japanese Patent Application No. Hei 10-194737.

[0005] With this structure, there is provided a novel material which exhibits not only an inorganic texture unique to metal but also a soft warm touch and appearance unique to paper, and also has strength, durability and workability as a metal. Was completed. This decorative paper laminated metal plate has a water-repellent top coat layer as well as laminated decorative paper with a good appearance.
The design of decorative paper can be maintained semipermanently.

[0006] In the decorative paper laminated metal plate, the metal plate has almost a silver-white or silver-gray surface such as a hot-dip galvanized steel plate (strip), a cold-rolled steel plate or an aluminum plate. Thus, when the decorative paper layer in the decorative paper laminated metal plate is unfortunately damaged by a blade or a sharp hard member and a minute portion of the decorative paper is removed, the silver white of the decorative paper base is removed. The exposed metal plate will be exposed.

[0007] Even if the surface layer of the exposed metal plate is a very small part, if there is a remarkable difference from the color tone of the decorative paper, it becomes a place where the viewer is conscious of the difference, and for example, the harmony of the interior design is impaired. It will be.

[0008] The present invention provides a decorative paper laminated metal sheet which does not give a noticeable color tone discomfort even when a minute portion of the decorative paper layer is damaged. The purpose is to do.

[0009]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and is a decorative paper laminated metal plate in which decorative paper is laminated on at least one surface of a metal plate via an adhesive or an adhesive. The gist is that the outermost layer of the metal plate is a colored layer having the same or similar color as the color of the decorative paper.

[0010] The invention according to claim 2 forms a pattern which has a concave portion and / or a convex portion on its surface and which is visible by having the concave portion and / or the convex portion have a color different from the surroundings. A decorative paper is laminated on at least one side of the metal plate via an adhesive or an adhesive,
A decorative paper laminated metal plate in which a top coat layer made of a water-repellent resin film is formed on the outermost layer on the decorative paper laminated surface, wherein the outermost layer of the metal plate is the same or similar in color to the decorative paper. A decorative paper laminated metal plate, characterized in that it is a colored layer of the following color:

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION

Since the present invention has the above-described structure, even if a minute portion of the decorative paper in the decorative paper laminated metal plate is damaged, it does not bring a noticeable discomfort in the color tone and impairs the harmony of the interior design. Nothing.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on preferred embodiments.

FIG. 1 shows a longitudinal section of a decorative paper laminated metal plate of the present invention. In FIG. 1, reference numeral 1 denotes a metal plate, for example, a steel plate having a thickness of 0.1 mm to 1.0 mm. Reference numeral 2 denotes a colored layer, which is formed, for example, by painting and baking so as to exhibit a light brown color on a color steel sheet production line. Reference numeral 3 denotes a pressure-sensitive adhesive layer or an adhesive layer. Reference numeral 4 denotes a decorative paper, and reference numeral 5 denotes a concave portion, which is colored differently from the surroundings to form a visually recognizable pattern such as a wood grain pattern. Reference numeral 6 denotes a top coat layer, which is formed of a synthetic resin having water repellency.

As the metal plate 1, a steel plate, a copper plate, an aluminum plate, a titanium plate and various alloy plates can be used. The metal plate may be subjected to a known anticorrosion surface treatment. Further, a metal foil can be used as the metal plate.

The coloring layer 2 preferably conforms to the color tone of the decorative paper 4 to be laminated. When the decorative paper 4 having a light brown background with a black-brown grain pattern is laminated, the coloring layer 2 should be light brown. Is desirable.

The colored layer 2 formed on the surface of the metal plate 1 is coated with a roll coater after degreasing, washing and drying a steel strip unwound with a pay-off reel, for example, in a color steel sheet production line, and then coated with a roll coater. Drying
It can be formed by baking.

The decorative paper 4 has paper as a base material, on which at least a printing ink layer and a resin layer are formed, and the resin layer is provided with concave portions and / or convex portions. A visually recognizable pattern is formed by giving a color different from the surroundings to the concave portion and / or the convex portion.

If the visible pattern on the decorative paper 4 has a woodgrain, it can be applied to various fields as a new material having a high-quality feel. In particular, it is preferable that a concave portion is provided in the decorative paper and the concave portion and the dark portion of the grain pattern coincide with each other because a natural pattern closer to natural wood is obtained.

From this point, the first printing ink layer, which becomes a light-colored portion of the wood pattern, is formed on the entire surface of the paper base material as the decorative paper 4, and then reacts with the curing agent in the resin layer to generate gas. After forming a second printing ink layer by printing a dark portion of a wood pattern with ink mixed with a substance, a resin layer containing a curing agent is formed on the first printing ink layer and the second printing ink layer. .

Then, the curing agent in the resin reacts with the contaminants in the second printing ink layer to generate gas, and the resin located on the second printing ink layer foams and protrudes. This foamed / raised portion is brittle and can be easily removed by grinding with a sander or the like. The foamed and raised portions that have been ground and removed become concave portions, and the second printing ink layer is exposed on the bottom surface.

Instead of mixing a substance which generates a gas by reacting with the curing agent in the resin layer, a substance which decomposes by heating to generate a gas may be mixed in the second printing ink layer.

As means for providing the resin layer with irregularities synchronized with the printing pattern, for example, as disclosed in JP-A-47-32911, a printing ink layer is partially provided on a paper base material, A resin layer is formed thereon, and a substance that generates a gas by reacting with a curing agent in the resin, such as DPT (dinitrosopentamethylenetetramine), is mixed into the ink, so that the ink layer is coated. A method of forming a convex portion by foaming and raising a resin located in the above. As disclosed in JP-A-48-777,
On the first printing ink layer, a second printing ink layer mixed with a substance which reacts with a curing agent in the resin to generate gas, for example, DPT (dinitrosopentamethylenetetramine) is applied, and the second printing ink layer is coated. Foam the resin located above
A method in which the foamed / raised portion is ground and removed by, for example, a sander to form a concave portion, and the second printing ink layer is exposed on the bottom surface of the concave portion. As disclosed in JP-A-63-77571, instead of the above-mentioned "substance which reacts with the curing agent in the resin to generate gas", "substance which decomposes by heat to generate gas" For example, by using an ink mixed with toluenesulfonyl hydrazide, for example, a wood pattern is printed on the first printing ink, and the resin located on the second printing ink layer is foamed / raised. And removing the second printing ink layer on the bottom surface of the recess by grinding and removing. Etc.

The “three-dimensional pattern” or the “irregularities synchronized with the print pattern” will be described with reference to the “wood-grain” decorative paper 4. The “grain pattern” is, for example, the pattern shown in FIG. 2, and such a grain pattern appears on the board surface. Decorative paper 4
When a wood grain pattern is printed on a black portion, the black portion in FIG. 2 is colored black brown, and the white portion is colored light brown. In this embodiment, the black portion in FIG. 2 is a concave portion.

FIG. 3 is a sectional view taken along the line AA in FIG. In FIG. 3, 41 is a paper substrate, 42 is a printing ink layer, and 43 is a resin layer. 5a and 5 are concave portions, and 6 is a top coat layer.

In this embodiment, a decorative paper having a light brown first printing ink layer formed on a paper substrate 41 is coated with a substance which reacts with a curing agent in a resin by heating to generate a gas, for example, toluene. A second printing ink layer having a pattern of a black portion in FIG. 2 is formed with black-brown ink mixed with sulfonyl hydrazide.

A gas is generated by the reaction between the contaminants in the second printing ink layer and the curing agent in the resin, and the resin layer 43 on the second printing ink layer foams and protrudes. The brittle foamed / raised portion is formed into a concave portion 5 by, for example, grinding with a sander. The black-brown second printing ink layer is exposed on the bottom surface of the concave portion 5.

The transparent top coat layer 6 is formed on the printing ink layer 42 and the resin layer 43. Even after the top coat layer 6 is formed, the recess 5 remains as a recess 5a without being buried. In this embodiment, the recess 5
“a” has a depth of 12 μm to 14 μm, and a tactile sensation similar to that of natural wood can be obtained.

As the resin for forming the resin layer 43, it is preferable to use a resin other than the polyvinyl chloride resin. In this embodiment, polyolefin resin, acrylic resin, epoxy resin, polyurethane resin, polyester resin, alkyd resin, styrene-butadiene resin, vinyl acetate resin and the like are used.

[0029] The top coat layer 6 is made of 23 in the droplet method.
The contact angle of water measured at 0 ° C. is preferably 60 ° or more, so that the top coat layer can maintain the water repellency and maintain the decorative paper semi-permanently.

The pressure-sensitive adhesive or adhesive 3 may be any of an aqueous type (emulsion type), a solvent type and a non-solvent type.
The application amount is 0.5 g / m ² to 40 by weight after drying.
g / m ² . If it is less than 0.5 g / m ² , the adhesion between the decorative paper and the metal plate will be poor. On the other hand, if it exceeds 40 g / m 2, the decorative paper may be wrinkled, and the effect of improving the adhesion may be saturated.

Examples of the pressure-sensitive adhesive or adhesive 3 include polyvinyl acetate resins such as polyvinyl acetate and vinyl acetate-ethylene copolymer (EVA); poly (meth) acrylic acid and / or esters thereof, and (meth) acrylic acid. And / or acrylic resins such as copolymers of esters thereof with other monomers such as styrene and vinyl acetate; polyurethane resins;
Polyester resin; Polyolefin resin; SBS and SI
Styrene resins such as BS; epoxy resins; phenol resins; alkyd resins; rubbers such as natural rubber and synthetic rubber can be used.

As the resin forming the top coat layer 6, a polyolefin resin, an acrylic resin, an epoxy resin, a polyurethane resin, a polyester resin alkyd resin, a styrene butadiene resin, or the like can be used.

In order to form the top coat layer 6, these resins are directly applied on decorative paper in a molten state, solution state or emulsion state, or a film of these resins is dry-laminated, wet-laminated, Lamination is performed by a method such as hot melt lamination.

The thickness of the top coat layer is preferably 5 μm or more from the viewpoint of protecting decorative paper. Usually 1
The range is preferably 0 μm to 30 μm.

When the decorative paper laminated metal sheet of the present invention is used, for example, by bending, it is preferable to prevent the breakage of the decorative paper by relaxing the stress with a pressure-sensitive adhesive layer using a relatively soft pressure-sensitive adhesive. . 180 of decorative paper and metal plate
° Peel strength is 0.01 kgf / 10 mm width to 5.0 k
By setting the peel strength to be within the range of gf / 10 mm and making the peel strength smaller than the breaking strength of the paper itself, it is possible to perform a bending process or the like while preventing the decorative paper from breaking. Further, it is desirable to use decorative paper having a breaking elongation of 2% or more.

The decorative paper laminated metal plate of the present invention has the following features depending on the configuration described above. 1. While a metal plate as it is has an inorganic cold touch, it becomes a soft and warm touch material. Also,
It looks good. 2. Excellent design. Since decorative paper with various three-dimensional patterns can be used, it can be used as a new material full of luxury that is not considered to be metal. 3. Without impairing the workability and strength of the metal plate, the presence of the topcoat layer and the decorative paper increases the anticorrosion effect and improves the corrosion resistance. 4. Even if a cigarette or the like is pressed, the metal plate absorbs heat, so that the fire resistance and the spread resistance are superior to the decorative paper itself. Even if it burns, it does not generate toxic gas at all, unlike a vinyl chloride steel sheet. 5. The strength is remarkably improved compared to the decorative paper itself. 6. Due to the presence of the top coat layer, the decorative paper is not broken or contaminated, and the decorative paper is kept semi-permanently in design. 7. Since the surface has irregularities, even if a cellophane tape is applied, the contact area is small and it can be peeled off neatly.

Example 1 In a color steel sheet production line, an acrylic pressure-sensitive adhesive was applied to a cold-rolled steel sheet obtained by applying a light-brown coating to a cold-rolled steel sheet by a roll coating method so as to be 10 g / m ² after drying.
A decorative paper having a three-dimensional woodgrain pattern formed on paper having a basis weight of 50 g / m ² and having a breaking strength and an elongation within the preferred ranges of the present invention was laminated, and dried at 80 ° C. (plate temperature) for 1 minute. A top coat layer was formed on the laminated material.

The decorative paper laminated metal plate was cut into small areas with a knife, and the decorative paper was peeled off. However, the scratches were hardly visible, and the color tone in the room did not cause any discomfort.

[0039]

According to the present invention, the decorative property of the three-dimensional decorative paper is imparted to the metal plate with a simple structure in which a decorative paper is stuck on at least one surface of the metal plate to form a top coat layer. be able to. Moreover, the soft and warm touch and appearance of paper can be imparted while maintaining the strength and workability of the metal plate.

In addition, the presence of the top coat layer prevents the decorative paper from being damaged during processing or when used as a product, and can maintain the decorativeness of the decorative paper for a long time.

Further, since the colored layer which is synchronized with the color tone of the decorative paper is formed on the metal plate, even if a minute peeling portion due to a sharp hard member or the like is formed on the decorative paper, it does not cause a noticeable discomfort in the color tone. It does not impair the harmony of the overall or interior design.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a decorative paper laminated metal plate of the present invention;

FIG. 2 is a plan view showing a woodgrain pattern on a decorative paper surface;

FIG. 3 is a sectional view taken along the line AA in FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Metal plate 2 Colored layer 3 Adhesive layer or adhesive layer 4 Decorative paper 5, 5a recessed part 6 Top coat layer 41 Paper base material 42 Printing ink layer 43 Resin layer

Claims (2)

[Claims] 1. A decorative paper laminated metal plate in which decorative paper is laminated on at least one surface of a metal plate via an adhesive or an adhesive, wherein the outermost layer of the metal plate has the same color as the decorative paper or A decorative paper laminated metal sheet, characterized by being a colored layer of the same type of color. 2. A decorative paper having concaves and / or convexes on its surface and forming a pattern that is visually recognizable by giving the concaves and / or convexes a color different from the surroundings is a metal. A decorative paper laminated metal plate which is laminated on at least one side of the plate via an adhesive or an adhesive and has a top coat layer made of a water-repellent resin film formed on the outermost layer on the decorative paper laminated surface. Wherein the outermost layer of the metal plate is a colored layer having the same color or a similar color as the color of the decorative paper.