JP2000255199A - Decorative plate made of metal and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a decorative plate made of metal capable of exhibiting an excellent designing decorativeness for a long period on the condition that a metal sheet of any of an iron plate, a steel sheet, an aluminum plate, stainless steel sheet and a zinc plate is used as the base and eliminating a dioxin public pollution when a fire breaks out or a waste material such as a reform or the like is incinerated, with an excellent degree of freedom of bending, waterproofness against moisture, leakage water or the like, fireproofness when a fire breaks out, and a method for manufacturing it. SOLUTION: An adhesive side surface of a decorative sheet P in which a colored layer 31 such as a design or the like by a printing means and a protective layer 2 for protecting the layer 31 are formed on a surface of a flexible sheet 3 having a metal foil except a chlorine compound resin is superposed on a surface of a metal sheet S selected from an iron plate, a steel plate, an aluminum plate, a stainless steel sheet and a zinc plate through any of one or two of a first adhesive layer 4, a second adhesive layer 5 exhibiting adhesive properties by heating in the type corresponding to the metal except the chlorine adhesive and adhesively integrated by a heating and pressurizing means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the use of a metal sheet having an arbitrary color tone (including a single color) and woodgrain on a surface of a metal thin plate, which is mainly used as an interior material for building or an exterior material for building. The present invention relates to a metal decorative board expressing a stone tone (marble, granite, etc.) and other various color patterns (hereinafter referred to as patterns) and a method of manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, most of building interior materials or building exterior materials are made of vinyl chloride film or paper on the surface of a combustible material such as MDF particle board, laminated wood (plywood), or plywood. The configuration was such that paper was stuck.

[0003] Further, as an interior material for building or an exterior material for building, which has solved the quality problems such as durability from the aspect of strength, waterproofness against moisture and water leakage, fire resistance in case of fire, etc., generated from the substrate. The decorative metal plate used is also known.

[0004] The construction of the above-mentioned known metal decorative plate is to remove oils and fats and dusts for the purpose of preventing electrochemical corrosion and improving paintability and decorativeness, taking advantage of iron and plastic. The surface of a steel sheet (which is roughly classified into a thick plate and a thin plate with a thickness of 3 mm as a boundary) having a pre-treatment including a sanding treatment or the like for improving the adhesion (adhesion area, etc.) is provided with an arbitrary color tone and grain Tone, stone tone (marble, granite, etc.) and other various color patterns, etc., and after forming an adhesive layer on either the surface on which the patterns are expressed or on the vinyl chloride film, the vinyl chloride film It is a configuration that is pressed by a roll or a press or painted with liquid vinyl chloride on either side and heated and pressed to integrate
A decorative steel plate or a vinyl chloride steel plate for interior materials (inner wall plates, steel product materials, electrical appliances, office supplies, household furniture, etc.) and a plastic paint baked on a zinc iron plate on a surface showing a pattern etc. It is frequently used for exterior materials (roof materials such as colored tins, outer wall covering materials such as color boards, etc.).

[0005]

The decorative veneer as an interior material for building or an exterior material for building is provided on the surface of a flammable substrate with an arbitrary color tone, woodgrain tone, stone tone tone, and various other color tone patterns. Because it represents the pattern of the material, the material cost and the production cost are inexpensive, and it can be an architectural interior material excellent in design. Inadequate quality in terms of strength, durability in terms of strength, waterproofness against moisture and water leakage, fire protection in the event of fire, etc. In addition, when a vinyl chloride film is used, there is a drawback in that dioxin pollution is caused not only at the time of a fire but also at the time of incineration when waste material is used in reforming or the like.

[0006] In addition, in order to make use of the advantages of a metal thin plate (S) and plastics, the latter is made of a non-flammable metal and is made of a non-flammable metal. Because the vinyl chloride film printed with etc. is bonded, some of the former drawbacks, namely fire resistance, durability in terms of strength can be eliminated, but temperature changes,
In addition to causing deterioration in durability such as peeling and fading due to deterioration of adhesion to the surrounding environment such as humidity change, etc., whitening of the bent portion of the vinyl chloride film at the time of bending processing, waste material as well as fire There was a problem to be solved in that dioxin pollution during incineration could not be eliminated.

The present invention is an improvement of the latter metal decorative plate, which is based on the premise that a metal thin plate is used as a base material, which solves the above-mentioned problems and secures a long-term film adhesiveness to improve the design. In addition to maintaining excellent aesthetics, the degree of freedom in bending, waterproofness against moisture and water leakage,
It is an object of the present invention to provide a metal decorative board which is excellent in fire resistance in a fire and can eliminate dioxin pollution at the time of fire or incineration of waste materials such as reforms, and a method of manufacturing the same.

[0008]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a metal decorative plate is described as a first invention, and a method of manufacturing a metal decorative plate is described below as a second invention.

First, a metal decorative plate according to the first invention is provided with a colored layer (31) such as a pattern and the like by a printing means on the surface of a flexible sheet (3) containing a metal foil except for a chlorine compound resin. The adhesive side surface of the decorative sheet (P) on which the protective layer (2) to protect is formed, the first adhesive layer (4), which is a metal-compatible type excluding chlorine-based adhesive and exhibits adhesiveness when heated, Adhesive layer (5)
Through one or two layers of pre-treated iron sheet, steel sheet,
It has a configuration in which it is superposed on the surface of a metal thin plate (S) selected from one of an aluminum plate, a stainless steel plate, and a zinc plate and bonded and integrated by heating and pressing means.

Next, a method for manufacturing a metal decorative board according to the second invention is to perform a primer treatment on a metal thin plate (S) constituting the metal decorative board after performing a pretreatment such as degreasing or the like, thereby forming a first adhesive layer.
(4) a thin plate supply step of supplying after forming, a decorative sheet supply step of supplying a laminated decorative sheet body (P), and a decorative sheet body (P) manufactured in the step.
The first adhesive layer of the metal sheet (S) treated in the above step, directly or via the second adhesive layer (5).
(4) superimposed, the bonding step of laminating these by heating and pressing, and a finishing step of cutting or winding to a predetermined size after cooling, the decorative sheet supply step,
After forming a colored layer (31) representing a pattern or the like on a flexible sheet surface excluding a chlorine compound-based resin by a printing means, a transparent or translucent single layer having a peeling property excluding the chlorine compound-based resin member is provided. Alternatively, the pre-peeling decorative sheet body (P1) in which the flexible peeling sheet (1) is laminated via the protective layer (2) composed of a plurality of layers is supplied. ), The flexible release sheet (1) is peeled off and the metal sheet treated in the above step is directly or through the second adhesive layer (5) on the adhesive surface side of the decorative sheet body (P). The process is characterized in that the process is superposed on the first adhesive layer (4) of the thin plate (S), heated and pressurized, and laminated and integrated.

The printing means is not limited to gravure printing, but includes ordinary printing means such as offset printing, silk screen printing, rotary screen printing, letterpress printing, intaglio printing, etc. In this case, the printing means employs any one of gravure printing, offset printing, and lead printing to correspond to this.

[0012]

The metal decorative panel according to the first aspect of the present invention uses a non-flammable metal sheet (S) as a base material, and as in the conventional case, ensures durability and fire resistance in terms of strength. After that, as a flexible sheet (3) forming a colored layer (31),
A metal sheet is obtained by laminating and integrating a film sheet made of a thermoplastic synthetic resin excluding a chlorine compound resin such as a vinyl chloride film with a first non-chlorine adhesive layer (4) or a second adhesive layer (5). Even if the decorative board is adapted to the need for bending, the bent part does not whiten or break, ensuring durability in terms of strength, waterproofness against moisture and water leakage, etc., and only in case of fire In addition, dioxin pollution during waste material incineration can be eliminated, and metal sheet (S) can be reused or reused. When P) is incinerated together with a thin metal sheet (S), safety and economy can be ensured.

The decorative sheet (P) is a flexible sheet.
On one side of (3), a colored layer (31) representing a picture or the like by printing means
After forming a transparent or translucent protective layer (2) that protects the colored layer (31) and / or a release layer (11), a flexible synthetic resin sheet excluding chlorine compound resin is used. From the release sheet laminate in which the flexible release sheet (1) was previously laminated and integrated, the one obtained by releasing the flexible release sheet (1) was designated,
Before heat-bonding the decorative sheet body (P) and the thin metal plate (S), the flexible peeling sheet (1) is peeled off from the release layer (11), and then bonded. In some cases.

Particularly, at least the first adhesive layer (4) of the first adhesive layer (4) and the second adhesive layer (5) is formed on the surface of the metal thin plate (S) by a primer treatment. When the first adhesive layer (4) has compatibility with the member to be laminated, the flexible sheet (3) is
(4) and an olefin-based film compatible with the colored layer (31), which acts as a second adhesive layer (5) in cooperation with the first adhesive layer (4) to exhibit an adhesive function. In this case, the first adhesive layer (4) and the second adhesive layer (5) are one liquid selected from urethane, synthetic rubber, polyester, polyamide, and epoxy, excluding chlorine. Both types and two-pack type ones use a material such as a thermoplastic synthetic resin sheet excluding the chlorine compound resin, so that a chlorine compound resin film sheet such as a vinyl chloride film becomes unnecessary. In addition to being economical, inconvenience due to disposal when used is eliminated.

Also, the pressure bonding between the decorative sheet body (P) and the metallic thin plate is ensured, and durability against peeling and discoloration due to deterioration of adhesion to the surrounding environment such as temperature change and humidity change. Degradation of the metal decorative board is not reduced, without causing the whitening of the bent portion at the time of the bending process, and without causing the distortion of the pattern or the like due to the formation of wrinkles or the like in accordance with the expansion and contraction due to the temperature. It is possible to provide, at an optimum cost, a metal plate made of an optimum quality corresponding to a use (interior wall, ceiling plate of a living space, inside of a school building, a warehouse, a garage, an exterior wall, etc.).

Further, as the first adhesive layer (4) and the second adhesive layer (5), an organic solvent (ester, ketone, etc.) containing polyurethane resin / synthetic resin as a main component is used.
By using a mixture of a curing agent mainly containing a polyisocyanate compound having an O content of about 30%, pressure bonding between the decorative sheet body (P) and the metal thin plate (S) becomes extremely good, In response to changes in the surrounding environment such as changes in humidity and changes in humidity, the adhesion strength is further improved, and not only durability against peeling can be ensured, but also joint impact with the protective layer (2) Improve surface strength,
Furthermore, it is possible to suppress the temporal change (fading) of the colored layer (31) and to maintain the decorative function such as a pattern over a long period of time.

According to the method for manufacturing a metal decorative board according to the second invention, the decorative sheet body (P) and the metal thin plate (S) can be individually processed or manufactured. Not only can it be made possible, but it is possible to efficiently and economically produce metal decorative boards with different patterns or metal materials with different metal materials according to demand and application, The manufacturing cost can be reduced.

Then, the first adhesive layer (4) formed by the primer treatment is used for both the metal thin plate (S) and the surface of the adhesive layer (4) of the decorative sheet (P) which is in close contact with the metal sheet (S). When only one is shown in the drawing as an example), the adhesive strength between the decorative sheet body (P) and the metal thin plate (S) is further improved, and the metal thin plate cut in advance to a predetermined size is used.
When the decorative sheet body (P) and the continuous decorative sheet body (P) are bonded and integrated by passing through a thermal transfer machine, the production and cutting of the decorative sheet body (P) and the metal sheet (S) are outsourced. Therefore, it is possible to efficiently manufacture the metal decorative board in a place where the installation area is small by using only the apparatus for forming the first adhesive layer (4) by painting and the equipment of the drying apparatus and the thermal transfer machine.

[0019]

DETAILED DESCRIPTION OF THE INVENTION AND

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below while explaining the structure of the metal decorative plate according to the first invention and the method of manufacturing the metal decorative plate according to the second invention.

First, an embodiment of a metal decorative board according to the first invention will be described. As shown in FIGS. 1 and 2, a first adhesive layer (4) is formed on a metal thin plate (S) serving as a substrate. , Second adhesive layer
(5) A flexible sheet (3), a colored layer (31) formed by printing means on the flexible sheet (3), a protective layer (2) for protecting the colored layer (31), and a release layer It has a seven-layer structure of (11).

When the metal thin plate (S) is required to be bent, the thin metal plate (S) includes a metal plate having a thickness of 300 μm, such as an aluminum foil.
One of an iron plate, a steel plate, an aluminum plate, a stainless steel plate, and a zinc plate of 3 mm or less is used.In the present embodiment, a 0.6 mm-thick steel plate is used, and isopropyl alcohol or isopropyl alcohol for the purpose of degreasing and removing dust is used. Pretreatment with toluene, etc., for the purpose of improving anticorrosion and adhesion, primer treatment, i.e. directly baking type paint 60-80g /
m2 is applied by spraying and set, and after 20 to 30 minutes, baked at 180 ° C for 6 to 10 minutes to form the first adhesive layer (4) with strong tackiness. Is what was done.

The flexible sheet (3) is made of a polyurethane film sheet made of a thermoplastic synthetic resin excluding a chlorine compound resin such as a vinyl chloride film, and the second adhesive layer (5) formed on one side thereof is Compatible with the film sheet, the main component is polyurethane resin / synthetic resin. Viscosity 9,000-12,000 ops / 25 ° C Solid content 27.5-29.5% Specific gravity 1.26 ± 0.02 / 25 ° C Solvent Organic solvent (ester Based on 100 parts by weight of two-component polyurethane resin / synthetic resin-based adhesive layer with properties of 100% or less, the viscosity is 100 to 250 ops at 25 ° C, and the NCO content is 30.0 to 31.5%. (Isocyanate) 5 parts by weight of a curing agent was added and uniformly stirred. However, the present invention is not limited thereto, and may be selected from any of natural / synthetic rubber, polyester, polyamide, epoxy chloroprene, other natural / synthetic rubber, and epoxy, excluding chlorine. The problem to be solved by the present invention can be achieved even with the second adhesive layer (5) formed of a liquid or two-component adhesive.

The flexible sheet (3) may be a first adhesive layer
When using an olefin-based film compatible with (4) and the colored layer (31), this serves as a second adhesive layer (5) to cooperate with the first adhesive layer (4). Demonstrate.

The first adhesive layer (4) and the second adhesive layer (5) are formed on the knife coater or the slit coater.
Paint on the flexible sheet (3) side at a uniform thickness of ~ 200g / m2, 100 ~ 150μ in the wet state, 35 ~ in the dry state
It is formed into a thickness of 50 μm, and this is forcibly dried at 35 to 55 ° C. for about 30 seconds, and dried to a state where there is a finger tack.

The colored layer (31) formed on the flexible sheet (3) is formed by printing (not shown) as a woodgrain pattern by gravure printing means using gravure ink.

The protective layer (2) is formed by coating or thin transparent resin sheet to a thickness of 2 μm by lamination for the purpose of seeing through and protecting the colored layer (31). , A main agent, a slip agent, and a curing agent. The main agent is mainly composed of an acrylic polyol resin (a resin in which a functional group OH is bonded to an acrylic resin skeleton), and a silicone-based antifoaming agent, wax, Contains silica (matting agent), solvent (ethyl acetate / toluene),
The curing agent is an isocyanate prepolymer (yellowing type (TDI type) / non-yellowing type (HMDI type) = 60/40 NV (solid content) 84%).

As for the method of manufacturing a metal decorative board,
Since it is also described in the above configuration description, a specific example will be briefly described. A metal thin plate supply step and a decorative sheet body
(P) supplying decorative sheet supply process, bonding process,
And a finishing process.

As described above, the metal thin plate supplying step includes the step of feeding a 0.6 mm coiled coil as a metal decorative plate (S).
In the line where thick thin steel plates are sent out, for the purpose of degreasing, pre-treatment with isopropyl alcohol or toluene for the purpose of dust removal, and for the purpose of improving corrosion resistance and adhesion,
Baking type paint 60 ~ 80g / m2 is applied by spraying and set. After 20 ~ 30 minutes, it is 6 ℃ at 180 ℃.
The primer is applied in a state where the first adhesive layer (4) is formed by continuously performing a primer treatment for baking for up to 10 minutes, and in some cases, it is pre-treated and primer-treated and wound up This is a step of continuously or intermittently supplying a metal thin plate (S) made of a thin steel plate cut into a predetermined size from a coil to the next bonding step.

Further, the decorative sheet supplying step of the decorative sheet (P) is performed in the case where the decorative sheet (P) on which the flexible release sheet (1) is not laminated is continuously supplied to the bonding step. In some cases, the pre-peeling decorative sheet body (P1) manufactured in a state where the flexible peeling sheets (1) are laminated is supplied to the bonding step, and both are steps parallel to the thin plate supplying step.

In the former case, following formation of a colored layer (31) representing a pattern or the like on one side of the flexible sheet (3) by printing means,
A transparent or translucent protective layer (2) formed by mixing a curing agent composed of an isocyanate-based prepolymer, and a release layer (1) for releasing the flexible release sheet (1).
1), and a second adhesive layer (5) made of a urethane-based adhesive is formed on the other surface of the flexible sheet (3), and is immediately supplied to the bonding step or immediately before being supplied to the thermal transfer device. Then, a second adhesive layer (5) is formed on one side of the flexible sheet (3) (which may be an olefin-based film sheet) and immediately supplied to the adhesive step.

In the latter case, the production and the bonding process of the decorative sheet body (P) are different in terms of time, location, etc. In such a case, the flexible peeling sheet is used.
(1) is laminated, the flexible peeling sheet (1) is peeled off immediately before the bonding step and supplied to the bonding step, and the peeled flexible peeling sheet (1) is made of a synthetic resin sheet or fabric. In the case of, etc., reuse or in the case of paper, etc., incinerate.

The bonding step is performed by a pair of heating / pressing rollers or a support table and one or more heating / pressing rollers or by means of vacuum heating, and depending on the season, the surface is heated to 160 to 230 ° C. Then, the decorative sheet body (P) is bonded and laminated on the thin steel plate at a stretch by roller pressing (by horizontal movement of the table or rolling movement of the roller in the horizontal direction) or vacuum pressing. The decorative sheet body (P) is beautifully laminated and integrated in a wrinkle-free state on (S),
We can manufacture metal decorative boards with woodgrain, stone (marble, granite, etc.) and other various color patterns on the surface. In addition, when using an olefin-based film sheet, the heating temperature by a heating and pressing roller or the like is 50 to 60 ° C. on the surface. Further, when the material is overheated by the play heat means, it goes without saying that these temperature conditions are changed.

Further, the finishing step after the bonding step may be performed by a winding means for responding to a need for cutting and selling at a store or a need for cutting on site, or a cutting for cutting a plurality of single plates of a predetermined size. Each of them can contribute to the reduction of distribution costs such as transportation, handling, and storage between the manufacturer and the end-user.

[Brief description of the drawings]

FIG. 1 is an enlarged cross-sectional configuration diagram illustrating a layer configuration of a metal decorative board according to an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view of a metal decorative plate according to an embodiment of the present invention.

[Explanation of symbols]

 (P) Decorative sheet (P1) Decorative sheet before peeling (1) Flexible peeling sheet (11) Release layer (2) Protective layer (3) Flexible sheet (31) Colored layer (S) Metal Thin plate (4) First adhesive layer (5) Second adhesive layer

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4F100 AB03A AB04A AB10A AB18A AB33B AK01B AK03A AK42G AK46G AK51G AK51K AK53G AR00B BA02 CB00 EC182 EJ192 EJ303 EJ34A EJ422 EJ65A EJ91B JJHBJBJHJBJBJHJBJBJHJBJHJBJBJHJBJBJHJBH00

Claims (8)

[Claims] A colored layer (31) of a picture or the like and a protective layer (2) for protecting the same are formed on the surface of a flexible sheet (3) containing a metal foil except for a chlorine compound resin by a printing means. Adhesive side of the decorative sheet (P) is a metal-compatible type excluding chlorine-based adhesive, and the first adhesive layer that exhibits adhesiveness when heated
(4) through one or two layers of the second adhesive layer (5), a pre-treated iron plate, a steel plate, an aluminum plate, a stainless steel plate, a metal thin plate selected from one of zinc plates ( A metal decorative board which is superposed on the surface of S) and bonded and integrated by heating and pressing means. 2. At least the first adhesive layer (4) of the first adhesive layer (4) and the second adhesive layer (5) is formed by a primer treatment on the surface of a metal thin plate (S). The metal decorative board according to claim 1, wherein the metal decorative board has compatibility with a member laminated on the first adhesive layer (4). 3. The flexible sheet (3) is composed of an olefin-based film compatible with the first adhesive layer (4) and the colored layer (31), and this is used as the second adhesive layer (5). The metal decorative board according to claim 1 or 2, which exhibits an adhesive function in cooperation with the first adhesive layer (4). 4. The first adhesive layer (4) and the second adhesive layer (5) are selected from urethane, synthetic rubber, polyester, polyamide and epoxy, excluding chlorine. 4. A one-part or two-part type.
A decorative metal plate as described in the above. 5. The first adhesive layer (4) and the second adhesive layer (5) are composed of a polyurethane resin / synthetic resin as a main component and using an organic solvent, and an isocyanate (NCO) content of about 30%. The metal decorative board according to claim 1, 2 or 4, wherein a hardening agent containing a polyisocyanate compound as a main component is mixed. 6. A thin metal plate (S) constituting a metal decorative plate
A thin plate supply step of supplying after forming a first adhesive layer (4) by performing a primer treatment following a pretreatment such as degreasing, and a decorative sheet for supplying a decorative sheet body (P) having a laminated structure Supplying step and decorative sheet body manufactured in the step
The adhesive side of (P), directly or via the second adhesive layer (5),
A bonding step of laminating on the first bonding layer (4) of the metal sheet (S) treated in the above step, heating and pressurizing them and laminating and integrating them, and finishing to cut or wind into a predetermined size after cooling. The decorative sheet supply step, after forming a colored layer (31) representing a pattern or the like by printing means on the surface of the flexible sheet excluding the chlorine compound resin, transparent or translucent chlorine compound based Except for the resin member, a pre-peeling decorative sheet body (P1) in which a flexible release sheet (1) is laminated via a protective layer (2) having a single layer or multiple layers having releasability is supplied. Yes, and the bonding step, the protective layer (2)
Peeling and removing the flexible release sheet (1) from
Apply the adhesive side of the decorative sheet (P) directly or with the second adhesive layer
(5) Through the metal sheet treated in the above step
A method of manufacturing a metal decorative board, which is a step of superimposing on the first adhesive layer (4) of (S), heating and pressing to laminate and integrate. 7. The flexible peeling sheet to be carried out immediately before or immediately after the bonding step, wherein the first adhesive layer (4) and the second adhesive layer (5) are provided.
(1) Both the back side of the decorative sheet body (P) from which the (1) has been peeled off and the front side of the thin metal plate (S) are individually formed to a certain thickness by means of coating, and are immediately supplied to the bonding step. Item 7. A method for producing a metal decorative plate according to Item 6. 8. The thin plate feeding step is a means for feeding a metal thin plate (S) on which a first adhesive layer (4) has been formed in advance as a metal thin plate (S) cut into a predetermined size. 8. The method for producing a metal decorative board according to 7.