JPH06134927A - Functional laminated sheet - Google Patents

Abstract

PURPOSE:To provide a functional laminated sheet not restricted from the aspect of processing and execution, having sufficient bonding strength between a resin film and the surface of a metal, excellent in characteristics such as heat resistance, weatherability, acid resistance, alkali resistance, processing aptitude or film posttreatment aptitude, having electromagnetic wave resistance and ultraviolet resistance and capable of being used as wall material mallet in the processability as a decorative panel. CONSTITUTION:A functional laminated sheet is a sheetlike laminate obtained by thermally welding a film composed of a fluoroolefinic resin with an m.p. of 160 deg.C or higher to the surface of a thin metal panel whose flexibility shown by a cantilever method is 50-2000mm.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a functional laminated board, and more particularly to a functional laminated board which is suitable as a special exterior material, a building material, etc. and which can have various decorative properties. It is a thing.

[0002]

2. Description of the Related Art Recently, the problems to be solved by the invention
Offers excellent adhesion to both resin and metal, and offers a laminated metal plate that is not easily attacked by heat, ultraviolet rays, acids, alkalis, salt water, moisture, etc. as a decorative veneer or wall material for construction, including special exterior materials. Is desired. BACKGROUND ART Conventionally, a resin laminated plate obtained by sticking a synthetic resin film to a galvanized steel plate or an aluminum plate via an adhesive has been used as an exterior material or a building material. In particular, a metal plate laminated with a fluororesin or the like is often used under long-term outdoor use conditions.

However, when a metal plate having a fluororesin film attached thereto using the above-mentioned adhesive is subjected to mechanical processing such as bending and drawing, there is a problem that the film peels or swells from the processed portion after long-term use. . When the laminated metal plate is subjected to a post-coating treatment such as an anodic oxide coating or a chemical conversion coating, the adhesive layer is eroded from the cut end face in the coating treatment step to cause peeling or swelling of the film. There is a problem, and cutting the laminated metal plate above
These post-coating treatments could not be performed for the purpose of preventing corrosion after processing. The problem of peeling or swelling of the film due to the erosion of the adhesive layer from the end face is likely to occur even in actual use, and there are large restrictions in processing and construction. Therefore, there is a problem in laminating the synthetic film and the metal plate via the adhesive.

When used as an exterior material, a building material, etc., when directly printing on a metal surface, considering that the weather resistance of the printed layer is significantly inferior, a high melting point synthetic resin film such as a fluororesin is heat fused. Wearing and laminating on a metal plate has a manufacturing problem. In particular, synthetic resins such as fluorine-based resin films have high melting points, so when these films are heat-sealed, the printed layer is discolored, and the heat resistance, weather resistance, acid resistance and resistance of the film fused to the metal surface are high. There were problems such as deterioration of alkalinity. Also, a method of heat-sealing a high melting point synthetic resin such as a fluororesin film at a lower temperature in order to prevent these discoloration and the like can be considered, but in this method, the film does not sufficiently adhere to the metal surface and heat resistance ,
There is a problem that weather resistance, acid resistance, alkali resistance, etc. are inferior and film peeling and swelling occur.

Further, as a new field, there is a demand for wall materials for protecting high-tech or clean rooms such as hospitals from electromagnetic waves, ultraviolet rays, and other things. In this case, electromagnetic wave resistance and ultraviolet light resistance are required. There is a demand for a wall material having excellent workability as a decorative board, but a material having a sufficient function has not been provided yet. Therefore, the object of the present invention is not limited in processing and construction, the resin film and the metal surface have sufficient adhesive strength, heat resistance, weather resistance, acid resistance, alkali resistance, processability, post-coating treatment. It is an object of the present invention to provide a functional laminated plate which has excellent properties such as suitability, and has electromagnetic wave resistance and ultraviolet light resistance, and which can be used as a wall material having excellent workability as a decorative plate.
The purpose of the present invention is to allow the resin film and the metal plate surface to be adhered with sufficient strength, and to improve the properties such as heat resistance, weather resistance, acid resistance, alkali resistance, processability, and post-coating process suitability. It is an object of the present invention to provide a method for producing a functional laminate which can prevent discoloration of a printed layer.

[0006]

SUMMARY OF THE INVENTION The present invention has a melting point of 160 ° C.
To provide a functional laminate, which is a sheet-like laminate obtained by heat-sealing a film of the above-mentioned fluoroolefin resin on a thin metal plate surface having a flexibility of 50 to 2000 mm represented by a cantilever method. The above object is achieved. The cantilever method is JIS L100.
According to the 45 ° cantilever method of No. 6, the following conditions are followed. 5 test pieces with a width of 25 mm and a length of 1000 mm from the created sample
Cut the sheet, place the short side of the sample piece on the smooth base with the inclined surface at 45 ° in alignment with the base line of the scale, and extrude the test piece in the direction of the inclined surface. The position of the other end when in contact with the inclined surface is read by a scale, and the distance pushed out is measured. The required test value is 5
The average value of 10 measured values on the front and back of one test piece is shown.

Further, the fluoroolefin resin is
The content of fluorine in the resin is preferably 35 to 76% by weight, and the fluoroolefin resin or the resin film may have a heat-metamorphic colorant inside. The fluoroolefin resin film and the metal plate have sufficient adhesion, and the fluoroolefin resin has heat resistance, weather resistance, acid resistance, and alkali resistance, so even after cutting and processing the laminated metal plate, Corrosion does not occur in the cut part, and there are no restrictions on processing and construction. Further, it has electromagnetic wave resistance due to lamination with a metal plate, the fluoroolefin resin is relatively strong against ultraviolet rays, and the laminated plate also exhibits ultraviolet resistance characteristics. Furthermore, since it is a flexible and plastically deformable sheet as a whole, it is possible to easily apply a pattern or the like by embossing, and it is possible to enhance the processability and the functionality as a decorative board.

According to the present invention, in the method for producing a functional laminate described above, after the fluoroolefin resin film is attached to the surface of the metal plate, the melting point temperature of the resin film is -10 ° C to the thermal decomposition temperature of -10. The above object is achieved by providing a method for producing a functional metal plate, which is characterized by being fused under a heating temperature condition of ° C. The fluoroolefin resin film is preferably treated with a wettability index of 35 to 50 dynes / cm on the pasting surface, and the metal plate is preferably treated with a chemical conversion coating layer on its surface. In the above-mentioned manufacturing method, it is possible to laminate the resin film at a relatively low melting point, the adhesiveness between the film and the metal plate is sufficiently achieved, and the colorant layer or the like is not discolored.

The functional laminate according to the present invention will be described in detail below. As shown in FIG. 1, a functional laminated plate 1 according to the present invention is one in which a fluoroolefin resin film 3 is fused on the surface of a metal plate 2 and laminated on the metal plate 2. The metal plate 2 is not particularly limited in its material, and is a metal used as an exterior material, other building material, etc., and examples thereof include aluminum, aluminum alloy, iron, iron alloy, austenite, ferrite, martensite, and the like. Examples include stainless steel, copper, copper alloys and titanium alloys. In addition, among steel plates of ferrous metal, rolled steel plate, plated steel plate,
There are steel sheets such as galvanized steel sheet, aluminum plated steel sheet, aluminum zinc plated steel sheet, and the like.

The metal plate 2 is preferably one whose surface is surface-treated so that the synthetic resin film such as the above-mentioned fluororesin can be easily adhered thereto. This surface treatment includes, for example, mechanical treatment and chemical treatment. The mechanical treatment includes sandblast treatment, buffing treatment, wire brush treatment, barrel treatment, and steel wool polishing treatment.The chemical treatment includes, for example, melting, electrolysis, plating treatment by eutectoid plating, and chromate. Chemical film formation treatment with phosphate, chromate, oxalate, chemical conversion etching treatment, electrolytic etching treatment, anodic oxide film treatment, etc. are preferable. Further, when the metal is aluminum, it is preferable that the metal has been subjected to electric etching treatment, chemical conversion etching treatment, chemical degreasing, solvent degreasing, anodic oxide film treatment (alumite), and chromate treatment.

The metal plate 2 generally has a thickness of 30 to 4000 μm, preferably 50 to 2500 μm, although it depends on its material. The flexibility of the metal plate 2 depends on its material, but the flexibility is 50 to 2000 mm, preferably 100 by the cantilever method indicated by JIS L1006.
The thickness is preferably about 1000 mm.
When the suppleness of the metal plate 2 is within the above range, the functional laminated plate 1 can be easily plastically deformed as shown in FIG. 2 regardless of the material and the quality of the metal. Therefore, embossing can be performed in a state where the resin is laminated in combination with the excellent adhesion followability of the resin, and an excellent decorative board or a flexible wallpaper can be obtained. Therefore, it is particularly desirable that the metal plate 2 is a foil.

The fluoroolefin resin according to the present invention includes ethylene tetrafluoroethylene, chlorotrifluoroethylene, ethylene chlorotrifluoroethylene,
Perfluoroalkoxyethylene, vinylidene fluoride, vinyl fluoride, tetrafluoroethylene,
A polymer of a monomer containing a fluorine atom such as hexafluoropropylene and an unsaturated hydrocarbon, or a copolymer thereof, or a copolymer with a monomer or a prepolymer containing another unsaturated hydrocarbon. is there. Fluoroolefin resin has a fluorine content of 35-76% by weight,
5 to 76% by weight is preferable, and the functional laminate 1 using the synthetic resin film in the above range has problems in heat resistance, weather resistance, acid resistance, alkali resistance, processability, suitability for post-coating, etc. Does not occur. Further, the melting point of the fluororesin is
160 ° C. to 330 ° C., particularly 200 ° C. to 310 ° C. are desirable, and the laminate 1 using the resin film in this range has sufficient heat resistance. Below the above range, heat resistance, weather resistance, acid resistance, If it exceeds the above range, the adhesiveness, workability, etc. are deteriorated. The thickness of the fluoroolefin resin film 3 is 10 to 5
00 μm, particularly 30 to 100 μm is more preferable. The laminated plate 1 using the resin film within the above range can easily form a pattern plastically deformed by embossing or the like, and there is no problem in followability with the surface of the metal plate 2. If it is less than the above range, embossing, bending, breaking of the film is likely to occur when performing plastic deformation such as drawing, and if it exceeds the above range, the followability of the film is deteriorated so that the plastic deformation of the portion is performed. Adhesion decreases. The resin film 3 is preferably one whose corrosive discharge, ultraviolet ray treatment, ozone treatment or the like has been applied to enhance the wettability of the surface as described later, and the wettability index of the treated surface is preferably in the range of 35 to 50 dynes / cm. . In the laminated plate 1 using the resin film having a wettability index within the above range, the adhesiveness between the metal plate 2 and the film 3 becomes reliable. The resin film may be either a single layer or a plurality of layers.

In the present invention, in order to enhance the decorative functionality, the fluoroolefin resin can be colored with a coloring agent such as an organic pigment, an inorganic pigment or an extender pigment. An example of less than 50% is possible. Further, among these pigments, a heat-resistant metamorphic pigment is desirable, and as the heat-resistant metamorphic pigment, at least 160
Those having a heat-resistant transformation property of not less than 0 ° C, particularly preferably not less than 200 ° C are desirable, and examples thereof include those shown in Table 1.

[0014]

[Table 1]

Further, as shown in FIG. 1 (b), a single colorant layer 4 may be provided between the metal plate 2 and the resin film layer 3. Such a colorant layer 4 may be a printed layer, and may have an ultraviolet absorber, a light stabilizer, an antioxidant, a tackifier metal flake, etc. in addition to the above colorants.
Further, as the heat-resistant modified colorant of the colorant layer 4, a colorant or a metallic pigment used in the fluororesin film,
Pearl pigment etc. are desirable.

Further, an ultraviolet absorber, a light stabilizer, an antioxidant, a tackifier, a metal flake or the like may be added, and the ultraviolet absorber may be a benzotriazole type, a benzophenone type or a cyanoacrylate type. Of these, benzotriazole-based compounds are preferable because of the sustained effect. As the light stabilizer, a hindered amine type is effective and preferable. Further, it is more preferable to use an ultraviolet absorber and a light stabilizer in combination.

Next, the method for producing the functional laminate according to the present invention will be described in detail. The method for producing a functional laminated plate according to the present invention comprises the steps of sticking the fluoroolefin resin film 3 on the surface of the metal plate 2 and then heating the resin film at a melting point temperature of -10 ° C to a thermal decomposition temperature of -10 ° C. It fuses under temperature conditions. If it is less than the above range, sufficient adhesive force cannot be obtained between the film 3 and the metal plate 2, and if it exceeds the above range, thermal denaturation of the colorant or the like occurs, which is not preferable.
The wetting index of the sticking surface of the fluoroolefin resin film is preferably 35 to 50 dynes / cm, and the film 3 treated in this range ensures fusion bonding with the metal plate 2. Further, it is desirable that the surface of the metal plate 2 be treated with a chemical conversion film layer. According to the above-mentioned manufacturing method, lamination can be performed at a relatively low resin temperature, sufficient adhesiveness between the film and the metal plate is achieved, and the colorant layer or the like is not discolored.

The functional laminate of the present invention can be provided with an adhesive layer and a releasable base material layer on its back surface to enhance its practicality. The adhesive layer is not particularly limited,
Organic polymer pressure-sensitive adhesives and organic polymer heat-sensitive adhesives are preferably used in terms of usage, for example, acrylic resin, fluorine resin, natural or synthetic rubber resin,
There are urethane-based resins, silicone-based resins, polyolefin-based resins, polyurethane-based resins, and the like, among which acrylic-based resins and silicone-based resins are preferable. The peelable substrate layer is
When the product of the present invention is applied to an adherend and used, it is peeled off from the adhesive layer and discarded. Therefore, before use of the product of the present invention, anything that can be stably adhered to the adhesive layer and can be easily peeled off by hand during use can be used. It is preferable for improving the sharpness.

As the acrylic resin for the adhesive layer, for example, ethyl acrylate, n-propyl acrylate,
n-butyl acrylate, isobutyl acrylate, n
-Hexyl acrylate, 2-ethylhexyl acrylate, n-octyl acrylate, 2-methylbutyl acrylate, 2-hydroxyethyl acrylate, 2-
Acrylic ester resins such as hydroxyethyl acrylate and cyanoacrylate, and ethyl methacrylate, methyl methacrylate, n-propyl methacrylate, n-butyl methacrylate, isobutyl methacrylate, n-hexyl methacrylate, 2-ethylhexyl methacrylate, Methacrylic acid ester resins such as n-octyl methacrylate, n-octyl methacrylate, 2-methylbutyl methacrylate, 2-hydroxyethyl methacrylate, and hydroxypropyl methacrylate. Further, there are copolymers composed of the above acrylic acid compounds and copolymers composed of the above acrylic compounds and vinyl esters such as vinyl acetate and vinyl propionate and styrene. As the acrylic compound forming these copolymers, ethyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, 2-hydroxyethyl acrylate and acrylic acid are preferable, and ethyl acrylate and butyl acrylate are particularly preferable.

As the natural or synthetic rubber type resin, for example, chloroprene rubber type, urethane rubber type, nitrile rubber type, silicone rubber type, butyl rubber type and various natural rubber type resins can be used. The thickness of the adhesive layer is not particularly limited, but is generally 5 to
It is 500 μm, preferably 10 to 300 μm, more preferably 20 to 100 μm. Further, various additives and colorants for improving weather resistance, heat resistance, adhesive strength, and hiding power can be added to the adhesive layer. Specifically, it is the above-mentioned coloring agent or ultraviolet absorber.

The releasable base material layer is preferably a base material layer of paper, polyester, polypropylene, polyimide, polyethylene or the like, which has been subjected to easy release treatment with a silicone resin coat and / or a fluorine resin coat, and further silicone. It is preferable to use paper or polyester or polypropylene base material coated with a system resin and / or a fluororesin. Further, particularly in the case of paper, those coated with polyethylene or clay on both sides or one side are preferable, and those subjected to super calender treatment are particularly preferable from the viewpoint of improving smoothness. The peeling force of the peelable base material layer from the adhesive layer is not particularly limited, but generally, when peeling at 180 ° at a speed of 300 mm / min at room temperature, 0.5 to 100 g / cm ² , preferably Is 1 to 50
It is g / cm ² . If it is too weak, it tends to peel off before use, and if it is too strong, workability during use tends to deteriorate.

The thickness of the releasable substrate layer is not particularly limited, but is generally 10 to 1000 μm, preferably 20 to 500 μm, more preferably 30 to 300 μm, and it is either too thin or too thick. However, workability tends to decrease. As a particularly preferred method for producing the adhesive layer and the peelable base material layer of the present invention, the adhesive layer may be directly formed on the metal layer, but in general, it is applied to the peelable base material layer in advance. Engineering,
It is obtained by drying and then laminating it to the metal plate layer. Further, a lighter peelable releasable base material layer can be pasted on the adhesive layer for the purpose of protecting the adhesive layer previously formed on the release base material layer until the time of use. .

[0023]

EXAMPLES Next, specific examples of the present invention will be described below. However, the present invention is not limited to the following examples. (Example 1) [Metal plate] As a metal plate, a coiled stainless foil having a width of 270 mm (SUS304 manufactured by Nippon Stainless Steel Co., Ltd., thickness: 50 μm)
m) was prepared. After degreasing treatment at 50 ° C. for 5 minutes, a scale remover (Triowner 900
A: Million Chemical Co., Ltd.) was used to remove the oxide layer formed on the surface under conditions of room temperature for 10 minutes. After that,
Chemical conversion coating agent (Grander 4701: Million Chemical Co., Ltd.)
A chemical conversion film layer was continuously formed on the surface of the stainless steel foil by using a commercially available product.

[Synthetic Resin Film] Tetrafluoroethylene-ethylene copolymer (ETFE) having the following characteristics
And titanium oxide are melt-kneaded by a twin-screw kneading extruder and then molded by a heat-melt extrusion method using a single-screw extruder to prepare a non-porous white film having a titanium oxide content of 8% by weight and a thickness of 50 μm. Then, the film was subjected to corona discharge treatment and surface treatment with a wetting index of 38 dynes / cm. (Characteristics of synthetic resin) -Tetrafluoroethylene / ethylene molar ratio: 53 /
47-Flow start temperature: 280 ° C-Pyrolysis start temperature: 350 ° C-Melt flow index at 297 ° C: 4.0 [Production of functional laminate] Pressure bonding using the metal plate, resin film and a pair of silicon rolls After that, heat fusion treatment was performed under the condition of 300 ° C. for 2 minutes to obtain a product 1 of the present invention. As shown in FIG. 2, the product 1 of the present invention was plastically deformable, and a fine pattern was easily formed by embossing.

(Example 2) [Metal plate] As a metal plate, a coiled aluminum foil having a width of 270 mm (A3003H18 manufactured by Toyo Aluminum Co., Ltd., thickness 70 μm) was prepared. Then, this aluminum alloy foil is immersed in a 10% caustic soda aqueous solution at 50 ° C. for 2 minutes,
Further, it was immersed in an 8% nitric acid aqueous solution at 20 ° C. for 2 minutes and then washed with water. Further, this aluminum alloy foil was subjected to chromate treatment (Alchrome 7/3 made by Nippon Parkerizing Co., Ltd.), washed with ion-exchanged water and dried. [Synthetic resin film] The same as in Example 1. [Manufacture of functional laminate] The same as in Example 1.

(Example 3) [Metal plate] Zinc chrome ZM- was used as a metal plate with a chemical conversion coating agent.
A coiled stainless steel foil was prepared in the same manner as in Example 1 except that 1320TK (manufactured by Nippon Parkerizing Co., Ltd.) was used. [Synthetic resin film] The same as in Example 1. [Manufacture of functional laminate] The same as in Example 1.

Example 4 [Metal plate] As a metal plate, a coiled stainless foil having a width of 270 mm (SUS304 manufactured by Nippon Stainless Steel Co., Ltd., thickness: 50 μm)
m) was prepared. Then, after performing degreasing treatment using Fine Cleaner FC4377F (manufactured by Nippon Parkerizing Co., Ltd.) as a degreasing agent under the conditions of 60 ° C. for 30 seconds, Triowner 900C (manufactured by Million Chemical Co., Ltd.) was used at room temperature for 1 minute. The oxide layer formed on the surface was removed under the conditions. Then, chemical conversion coating agent Zinchrome ZM-1320T
A chemical conversion coating layer was continuously formed on the surface of the stainless steel foil using K (manufactured by Nippon Parkerizing Co., Ltd.). [Synthetic resin film] A tetrafluoroethylene-hexafluoroethylene copolymer (Neotron FEP: manufactured by Daikin Industries, Ltd.) having the following characteristics and titanium oxide are melt-kneaded by a twin-screw kneading extruder, and then a single-screw extruder is used. A non-porous white film having a titanium oxide content of 5% by weight and a thickness of 50 μm is prepared by molding by a heat melting extrusion method,
This film was subjected to corona discharge treatment, wetting index 38
A surface treatment of dyne / cm was performed. (Characteristics of synthetic resin) Melting point 265 to 270 ° C. Melt viscosity at 380 ° C. 5 to 10 × 10 ⁴ Poise [Production of functional laminate] Pressure bonding using the metal plate, resin film and a pair of silicon rolls After that, heat fusion treatment was performed under the condition of 300 ° C. for 2 minutes to obtain a product 4 of the present invention.

(Example 5) [Metal plate] The surface of the coiled stainless steel foil prepared in Example 4 was roughened using a steel rotating brush,
Degreasing treatment and the like were performed in the same manner as in Example 4. [Synthetic resin film] The same as in Example 4. [Production of Functional Laminate] The same as in Example 4.

Next, the following performance tests A to H were conducted on each of the above-mentioned products of the present invention to examine the adhesion performance of the fluororesin film to the metal surface, and the respective test results and evaluations were shown. [Test A] This test is a test for observing the adhesive strength, and the adhesive strength when the film was peeled off from the metal surface at a speed of 300 mm / min in the direction of 180 ° with a film width of 25 mm was observed to judge the strength. [Test B] This test is a bending test of a test piece. The test piece having a width of 50 mm was subjected to 180-degree IT bending as shown in FIG. 3 and the peeled state and cracked state of the film were observed. Judgment was made according to the judgment criteria of Table 1 and the results are shown in Table 1 below.
It was shown to. ⊚: There is no crack in the film coating, no gas is generated even when an acid resistance test is performed by immersing the film in 10% hydrochloric acid,
Also, no cracks have occurred in the base metal. Good: Wrinkles are generated in the film due to cracks in the base metal, but no gas is generated in the acid resistance test, and the film coating is not cracked. Δ: There is no crack in the film coating by visual judgment, but gas is generated in the acid resistance test. X: A clear crack is recognized in the film coating by visual inspection.

[Test C] This test is a test for observing the suitability of an anodized film. A test piece of 65 mm × 50 mm is degreased with a 3% aqueous solution of caustic soda, and then neutralized with a 1% aqueous solution of nitric acid. Then, after this, the test piece was anodized in a 15% aqueous solution of sulfuric acid for 20 minutes under the conditions of a current density of 1 A / dm ² and a DC voltage of 12 V, and then the test piece was further heated in boiling water for 30 minutes. The peeled state and the swollen state of the film in the test piece after boiling and treatment were observed to judge the state. [Test D] This test is a Cass corrosion resistance test, and JIS H8
681, sodium chloride 5%, cupric chloride 0.
An erosion test was performed on a Cass test solution having a pH of 3.0 with 26% and glacial acetic acid 0.1% using a 1SO type tester (manufactured by Suga Test Instruments Co., Ltd.). For this, a 70 mm long cross cut was put in the lower part of a 70 mm × 200 mm test piece with a knife as shown in FIG. 4, and a Cass test was conducted for 250 hours.
For swelling and corrosion of non-cross cut parts, see JIS H86.
The rating number is shown at 81, and (b) the erosion width on one side of the cross-cut portion was recorded and judged by the degree of erosion.

[Test E] In this test, W.
O. In the M test, according to JIS A1415, a black panel temperature of 63 ± was obtained by using a sunshine weatherometer.
The gloss, color tone, and peeling state after the test were observed for 5000 hours under the condition of 3 ° C. to judge the state. ◎: Compared to the storage test piece, there is no surface deterioration or decrease in gloss,
The change in color is also slight. ◯: The color difference ΔE is less than 5, but the decrease in gloss is small. Δ: The color difference ΔE is 5 or more and less than 10, and gloss reduction is recognized. X: Color difference ΔE is 10 or more, and whitening and deterioration of the surface of the test piece are clear. [Test F] This test is for observing the adhesion of the processed part. A test piece with a width of 50 mm and a length of 65 mm was cut with a knife as shown in Figs. 5 (a) and 5 (b). After inserting, a steel ball with a diameter of 20 mm is pushed in using an Erichsen tester (manufactured by Tokyo Tester Co., Ltd.) to perform a drawing process with a depth of 9 mm. After boiling this test piece for 24 hours, the state of peeling or swelling of the film at the cross-cut portion after drawing is observed and judged. ⊚: No peeling or swelling of the film, no change. ◯: There is no peeling of the film in the cross cut part, but the cut end of the cut part is wide. Δ: Peeling within 0.5 mm occurs in the cross cut portion. X: Peeling of more than 0.5 mm occurs in the cross cut portion. XX: Film peeling occurs before boiling.

[Test G] This test is also a test for observing the adhesion to the processed part, and a test piece having a width of 50 mm and a length of 65 mm is shown in FIG.
As shown in (a) and (b), after making parallel cuts with a width of 5 mm with a knife, use an Erichsen tester to measure the diameter of 20 mm.
A steel ball of mm is pushed in to perform a drawing process with a depth of 9 mm. After the test piece is boiled for 24 hours, the film in the cut portion is peeled to observe the presence or absence of peeling and the degree of peeling to judge. A: The film does not rise and cannot be peeled. ○: The length of the peel is within 3 mm. Δ: Peel remains in the narrowed portion, and the flat portion cannot be peeled. X: Peeling is possible up to the flat part. XX: Film peeling occurs before boiling. [Test H] This test is a test for observing the suitability of the anodized film in the machined part. After the test piece shown in FIG. The judgment is made according to the same judgment standard. From the results shown in Table 2 below, it is understood that all of the products 1 to 5 of the present invention have strong adhesive strength, excellent heat resistance, weather resistance, acid resistance, and alkali resistance, and can be surface-treated with alumite or the like. .

[0033]

[Table 2]

[0034]

EFFECTS OF THE INVENTION The functional laminate of the present invention has no restrictions on processing and construction, has sufficient adhesive strength between the resin film and the metal surface, and has heat resistance, weather resistance, acid resistance, alkali resistance, and processing. It can be used as a wall material having excellent properties such as suitability and suitability for post-coating treatment, electromagnetic wave resistance and ultraviolet light resistance, and excellent workability as a decorative board.

[Brief description of drawings]

1 (a) and 1 (b) are enlarged sectional views showing a sectional structure of a resin laminated metal plate of the present invention.

FIG. 2 is a plan view in which the resin laminated metal plate of the present invention is embossed.

FIG. 3 is a side view showing a test piece of a bending test of a resin laminated metal of the present invention.

FIG. 4 is a plan view showing a test piece for a cast durability test of the resin laminated metal of the present invention.

5 (a) and 5 (b) are a plan view and a side view showing a test piece of a test for observing adhesion to a processed portion of the resin laminated metal of the present invention.

6 (a) and 6 (b) are a plan view and a side view showing a test piece of another test for observing the adhesion to the processed part of the resin laminated metal of the present invention.

[Explanation of symbols]

 1 Resin Laminated Metal Plate 2 Metal Plate 2A Metal Plate Treatment Layer 3 Resin Film Layer 4 Colorant Layer

Claims (7)

[Claims] 1. A sheet-like laminate obtained by heat-sealing a film of a fluoroolefin resin having a melting point of 160 ° C. or higher on a thin metal plate surface having a flexibility of 50 to 2000 mm, which is represented by a cantilever method. Laminated board. 2. The functional laminate according to claim 1, wherein the surface of the sheet-like laminate can be stamped by plastic deformation. 3. The functional laminate according to claim 1, wherein the fluoroolefin resin has a fluorine content of 35 to 76% by weight in the resin. 4. The functional laminate according to claim 1, wherein the fluoroolefin resin or the resin film has a heat-metamorphic colorant inside. 5. The method for producing a functional laminate according to claim 1, wherein the fluoroolefin resin film is attached to the surface of the metal plate, and then the melting point temperature of the resin film is -10 ° C. to the thermal decomposition temperature. A method for producing a functional laminate, which comprises fusing under a heating temperature condition of -10 ° C. 6. The method for producing a functional laminate according to claim 5, wherein the fluoroolefin-based resin film is treated with a wetting index of 35 to 50 dynes / cm on the attaching surface. 7. The method for producing a functional laminate according to claim 5, wherein the surface of the metal plate is treated with a chemical conversion film layer.