JP2006159869A - Decorative metal plate - Google Patents

Decorative metal plate Download PDF

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JP2006159869A
JP2006159869A JP2004358676A JP2004358676A JP2006159869A JP 2006159869 A JP2006159869 A JP 2006159869A JP 2004358676 A JP2004358676 A JP 2004358676A JP 2004358676 A JP2004358676 A JP 2004358676A JP 2006159869 A JP2006159869 A JP 2006159869A
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acrylic resin
metal plate
layer
decorative metal
resin layer
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JP4686178B2 (en
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Tetsuo Nakamoto
哲男 中本
Masanori Tanigami
雅則 谷上
Tokuaki Kakuma
徳昭 加隈
Motohiro Tomomori
基裕 友森
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Toyo Kohan Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a decorative metal plate excellent in whitening resistance without causing a whitening phenomenon by generating a fine crack on the surface layer side of a resin layer when bending having a small radius of curvature and severe is provided in a work environment at low temperature such as the winter season or the like, and being covered with an acrylic resin. <P>SOLUTION: The decorative metal plate keeps a meatal plate such as zinc steel overlaid with a plural layer resin, provided by forming a print layer between a transparent acrylic resin layer which blends the acrylic resin, acrylic rubber and a ultraviolet absorbent, and a color acrylic resin layer including a color pigment in a blend resin which blends the acrylic resin, the acrylic rubber, the ultraviolet absorber and a plasticizer, and selective forms emboss recesses on the surface of the transparent acrylic resin layer. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、金属板にアクリル樹脂を被覆してなり、特に加工を施した際の耐白化性に優れた化粧金属板に関する。   The present invention relates to a decorative metal plate that is formed by coating a metal plate with an acrylic resin, and that is particularly excellent in whitening resistance when processed.

建物外部の屋根材、壁材、ドアなどの屋外建材、建物内部の壁材、仕切材、ドアなどの屋内建材として、従来は金属板にポリ塩化ビニルを被覆してなる樹脂被覆金属板が用いられていた。しかるに、昨今は不要となったこれらのポリ塩化ビニル被覆金属板を焼却廃棄する際に、ダイオキシンなどの有害物や塩化水素などの汚染物質が発生して環境に悪影響を与えることから、屋外および屋内の建材用途に、以下に示すようなポリ塩化ビニル被覆金属板に替わる樹脂被覆金属板が用いられるようになっている。   Conventionally, resin-coated metal plates made by coating a metal plate with polyvinyl chloride are used as outdoor building materials such as roofing materials, wall materials, and doors outside buildings, and indoor building materials such as wall materials, partition materials, and doors inside buildings. It was done. However, when these polyvinyl chloride coated metal sheets that are no longer needed are discarded by incineration, harmful substances such as dioxins and pollutants such as hydrogen chloride are generated, which adversely affects the environment. A resin-coated metal plate instead of a polyvinyl chloride-coated metal plate as shown below is used for the building material application.

また、これらの用途においては、色調、模様、表面光沢などの意匠性に加えて、石目や木目を模した凹部や、幾何学模様の凹部などのさまざまな微小な凹部をエンボス加工により形成させてなるエンボス加工性も求められ、樹脂被覆層がそれらの曲げ加工性、意匠性、エンボス加工性、および屋外で用いた場合に優れた耐候性が得られるような樹脂で構成されていることが求められる。また、例えばドア等の用途においては、成形加工するために樹脂被覆金属板に曲げ加工を施した際に、樹脂層にクラックが生じることのない優れた加工性が求められる。   In addition, in these applications, in addition to design properties such as color tone, pattern, and surface gloss, various minute recesses such as recesses imitating stones and wood, and recesses in geometric patterns are formed by embossing. Embossability is also required, and the resin coating layer should be composed of a resin that can provide bending workability, design, embossability, and excellent weather resistance when used outdoors. Desired. For example, in applications such as doors, when a resin-coated metal plate is bent for forming, excellent workability without causing cracks in the resin layer is required.

これらのさまざまな要求に応えるべく、本発明の発明者等は特許文献1においてアクリル樹脂にアクリルゴムをブレンドしてなる透明アクリル樹脂層および着色アクリル樹脂層を用いた化粧金属板を提案している。この化粧金属板は、アクリル樹脂にアクリルゴムをブレンドすることにより、透明アクリル樹脂層および着色アクリル樹脂層の加工性を向上させたものであり、加工性に優れており折曲げ加工を施しても樹脂層にクラックが生じることがない。   In order to meet these various requirements, the inventors of the present invention have proposed a decorative metal plate using a transparent acrylic resin layer and a colored acrylic resin layer obtained by blending acrylic rubber with acrylic resin in Patent Document 1. . This decorative metal plate improves the processability of the transparent acrylic resin layer and the colored acrylic resin layer by blending acrylic rubber with acrylic resin, has excellent processability, and can be bent. Cracks do not occur in the resin layer.

しかし、特に冬季などの低温の作業環境において、ディンプル加工のような曲率半径の小さな厳しい曲げ加工を施した場合、最表面の樹脂層に微小なクラックが生じることによる白化現象が発生しやすく意匠性が低下するため、特許文献1の化粧金属板は、加工環境や加工程度の厳しい用途によっては適用が制限されてしまう。   However, especially in winter and other low-temperature work environments, when severe bending with a small radius of curvature such as dimple processing is applied, whitening is likely to occur due to the formation of microcracks in the outermost resin layer. Therefore, the application of the decorative metal plate of Patent Document 1 is limited depending on the processing environment and the severe use of the processing level.

本出願に関する先行技術文献情報として次のものがある。
特開2004−142164号公報
Prior art document information relating to the present application includes the following.
JP 2004-142164 A

本発明は、冬季などの低温の作業環境で曲率半径の小さな厳しい曲げ加工を施した際に、最表面の樹脂層に微小なクラックが生じることによる白化現象が発生しない耐白化性に優れた、アクリル樹脂を被覆してなる化粧金属板を提供することを目的とする。   The present invention has excellent whitening resistance that does not cause a whitening phenomenon due to the occurrence of minute cracks in the outermost resin layer when subjected to severe bending with a small radius of curvature in a low-temperature working environment such as winter. An object is to provide a decorative metal plate coated with an acrylic resin.

上記課題を解決する本発明の化粧金属板は、金属板の少なくとも片面に、表層側から順に、透明アクリル樹脂層、印刷層、可塑剤を含有する着色アクリル樹脂層、接着剤層を形成させてなる化粧金属板(請求項1)であり、
上記(請求項1)の化粧金属板において、前記着色アクリル樹脂層は、0〜40重量%のアクリル樹脂、1〜40重量%の可塑剤、0〜20重量%の紫外線吸収剤、および残部のアクリルゴムからなり、かつアクリル樹脂、可塑剤、紫外線吸収剤、およびアクリルゴムの総和が100重量%となるようにブレンドしてなること(請求項2)を特徴とし、また
上記(請求項1または2)の化粧金属板において、前記透明アクリル樹脂層は、0〜40重量%のアクリル樹脂、0〜20重量%の紫外線吸収剤、および残部のアクリルゴムからなり、かつアクリル樹脂、紫外線吸収剤、およびアクリルゴムの総和が100重量%となるようにブレンドしてなること(請求項3)を特徴とし、また
上記(請求項1〜3)いずれかの化粧金属板において、前記透明アクリル樹脂層は表面にエンボス加工による凹部が形成されてなること(請求項4)を特徴とし、また
上記(請求項1〜4)いずれかの化粧金属板において、表面にディンプル加工を施してなること(請求項5)を特徴とし、また
上記(請求項1〜5)いずれかの化粧金属板において、前記金属板が亜鉛めっき鋼板であること(請求項6)を特徴とする。
The decorative metal plate of the present invention that solves the above problems is formed by forming a transparent acrylic resin layer, a printing layer, a colored acrylic resin layer containing a plasticizer, and an adhesive layer in order from the surface layer side on at least one surface of the metal plate. A decorative metal plate (Claim 1),
In the decorative metal plate according to (Claim 1), the colored acrylic resin layer comprises 0 to 40% by weight of an acrylic resin, 1 to 40% by weight of a plasticizer, 0 to 20% by weight of an ultraviolet absorber, and the balance. It is made of acrylic rubber and is blended so that the total of acrylic resin, plasticizer, ultraviolet absorber, and acrylic rubber is 100% by weight (Claim 2), and the above (Claim 1 or In the decorative metal plate of 2), the transparent acrylic resin layer is composed of 0 to 40% by weight of acrylic resin, 0 to 20% by weight of ultraviolet absorber, and the remaining acrylic rubber, and the acrylic resin, ultraviolet absorber, In addition, the decorative metal plate according to any one of the above (Claims 1 to 3) is characterized by being blended so that the total of acrylic rubber is 100% by weight (Claim 3). The transparent acrylic resin layer is characterized in that a concave portion formed by embossing is formed on the surface (Claim 4), and the surface of the decorative metal plate described above (Claims 1 to 4) is subjected to dimple processing. (Claim 5), and in any of the above (Claims 1-5), the metal plate is a galvanized steel sheet (Claim 6).

金属板に透明アクリル樹脂層、印刷層、着色アクリル樹脂層、接着剤層を形成させてなる本発明の化粧金属板は、着色アクリル樹脂層が可塑剤を含有しているので加工性に優れており、低温の作業環境下でディンプル加工のような曲率半径の小さな厳しい曲げ加工を施した場合でも最表面の透明アクリル樹脂層に微小クラックが生じることによる白化現象が発生しにくく、また白化現象が発生しても室温で経時するかもしくは加温することにより、着色アクリル樹脂層中に含有される可塑剤が透明アクリル樹脂層にブリードして白化が消失する。そのため、本発明の化粧金属板は、曲率半径の小さな厳しい曲げ加工を施す加工用途に好適に適用できる。   The decorative metal plate of the present invention in which a transparent acrylic resin layer, a printing layer, a colored acrylic resin layer, and an adhesive layer are formed on a metal plate is excellent in workability because the colored acrylic resin layer contains a plasticizer. Even when severe bending with a small radius of curvature, such as dimple processing, is performed in a low-temperature working environment, whitening is unlikely to occur due to microcracks in the outermost transparent acrylic resin layer. Even if it occurs, the plasticizer contained in the colored acrylic resin layer bleeds into the transparent acrylic resin layer due to aging or heating at room temperature, and whitening disappears. Therefore, the decorative metal plate of the present invention can be suitably applied to a processing application in which severe bending with a small radius of curvature is performed.

以下、本発明を詳細に説明する。本発明の化粧金属板は、亜鉛めっき鋼板のような金属板の少なくとも片面に、表層側から順に、透明アクリル樹脂層、印刷層、可塑剤を含有する着色アクリル樹脂層、接着剤層を形成させて構成される。すなわち、透明アクリル樹脂層および着色アクリル樹脂層としてアクリル樹脂を用いる。   Hereinafter, the present invention will be described in detail. The decorative metal plate of the present invention has a transparent acrylic resin layer, a printing layer, a colored acrylic resin layer containing a plasticizer, and an adhesive layer formed in order from the surface layer side on at least one surface of a metal plate such as a galvanized steel plate. Configured. That is, an acrylic resin is used as the transparent acrylic resin layer and the colored acrylic resin layer.

アクリル樹脂としては、メタクリル酸メチル、メタクリル酸エチル、メタクリル酸ブチルなどのホモポリマー、またはこれらの共重合体、またはこれらとアクリル酸、メタクリル酸、アクリル酸メチル、アクリル酸エチル、アクリル酸ブチル、アクリル酸2−エチルヘキシル、メタクリル酸2−エチルヘキシル、アクリル酸ラウリル、メタクリル酸ラウリル、アクリル酸ステアリル、メタクリル酸ステアリル、アクリル酸シクロヘキシル、メタクリル酸シクロヘキシル、アクリル酸ベンジル、メタクリル酸ベンジル、アクリル酸グリシジル、メタクリル酸グリシジル、アクリル酸2−ヒドロキシジエチル、メタクリル酸2−ヒドロキシジエチル、アクリル酸2−ヒドロキシプロピル、メタクリル酸2−ヒドロキシプロピルなどの共重合体を用いることができる。   Acrylic resins include homopolymers such as methyl methacrylate, ethyl methacrylate, and butyl methacrylate, or copolymers thereof, and these and acrylic acid, methacrylic acid, methyl acrylate, ethyl acrylate, butyl acrylate, acrylic 2-ethylhexyl acid, 2-ethylhexyl methacrylate, lauryl acrylate, lauryl methacrylate, stearyl acrylate, stearyl methacrylate, cyclohexyl acrylate, cyclohexyl methacrylate, benzyl acrylate, benzyl methacrylate, glycidyl acrylate, glycidyl methacrylate Copolymers such as 2-hydroxydiethyl acrylate, 2-hydroxydiethyl methacrylate, 2-hydroxypropyl acrylate, 2-hydroxypropyl methacrylate, etc. Rukoto it is.

しかし、アクリル樹脂は硬いために加工性に乏しく、これらのアクリル樹脂を単独で用いた透明アクリル樹脂層および着色アクリル樹脂層を有する化粧金属板をドアなどに加工する際に曲げ加工を施す際に、曲率半径が小さい曲げ加工を施すと樹脂にクラックが生じる。そのため、加工性を向上させるためにこれらのアクリル樹脂にアクリルゴムをブレンドする。アクリルゴムとしては、エチルアクリレート、プロピルアクリレート、ブチルアクリレート、などのアルキルアクリレート、メトキシエチルアクリレート、エトキシエチルアクリレートなどのアルコキシアルキルアクリレート、メチルチオエチルアクリレートなどのアルコキシルアルキルアクリレート、シアノエチルアクリレートなどのシアノアルキルアクリレートなどの1種または2種以上を主成分とし、これにブタジエン、メチルブタジエン、イソプレン、ピペリレン、1,4−ペンタジエン、メチルペンタジエン、シクロペンタジエン、ジシクロペンタジエン、ビニルシクロペンタジエン、アセトキシブタジエン、メトキシブタジエン、シアノブタジエン、エチリデンノルボルネン、ビニリデンノルボルネン、プロペニルノルボルネン、ジシクロペンタジエニルアクリレートなどのジエン系モノマーの1種または2種以上、またはスチレン、α−メチルスチレン、パラメチルスチレンなどの芳香族ビニル単量体の1種または2種以上を架橋基成分として共重合させてなる共重合体を用いることができる。   However, since acrylic resin is hard, it has poor processability, and when bending metal sheets with transparent acrylic resin layers and colored acrylic resin layers using these acrylic resins alone are processed into doors, etc. When a bending process with a small radius of curvature is performed, cracks occur in the resin. Therefore, acrylic rubber is blended with these acrylic resins in order to improve processability. Examples of acrylic rubbers include alkyl acrylates such as ethyl acrylate, propyl acrylate, and butyl acrylate, alkoxyalkyl acrylates such as methoxyethyl acrylate and ethoxyethyl acrylate, alkoxyl alkyl acrylates such as methylthioethyl acrylate, and cyanoalkyl acrylates such as cyanoethyl acrylate. One or more of the main components are butadiene, methylbutadiene, isoprene, piperylene, 1,4-pentadiene, methylpentadiene, cyclopentadiene, dicyclopentadiene, vinylcyclopentadiene, acetoxybutadiene, methoxybutadiene, cyanobutadiene. , Ethylidene norbornene, vinylidene norbornene, propenyl norbornene One or more diene monomers such as dicyclopentadienyl acrylate, or one or more aromatic vinyl monomers such as styrene, α-methyl styrene, paramethyl styrene, and the like as crosslinking group components A copolymer obtained by copolymerization can be used.

しかし、アクリル樹脂を被覆した化粧金属板の用途として、意匠性を高めるためにディンプル加工を施して表面に微小なくぼみ(凹部)を設けることが行われることがある。ディンプル加工による凹部の上縁は、曲率半径が極めて小さい厳しい曲げ加工が施される。そのため、上記のようなアクリルゴムをブレンドしてなるアクリル樹脂を用いた場合でも、加工部には微細なクラックが生じることによる白化現象が発生する。この白化現象は特に冬季など、加工を施す環境が低温である場合に発生しやすく、その対策が求められている。   However, as a use of a decorative metal plate coated with an acrylic resin, there is a case where a dimple process is performed to provide a fine dent (concave portion) on the surface in order to improve design properties. The upper edge of the recess by dimple processing is subjected to severe bending with a very small radius of curvature. Therefore, even when an acrylic resin obtained by blending acrylic rubber as described above is used, a whitening phenomenon occurs due to generation of fine cracks in the processed portion. This whitening phenomenon is likely to occur when the processing environment is low temperature such as in winter, and countermeasures are required.

そのため、本発明においては、アクリルゴムをブレンドしてなるアクリル樹脂にさらに可塑剤をブレンドする。可塑剤をブレンドすることにより、低温の作業環境において、ディンプル加工のような曲率半径が極めて小さい厳しい曲げ加工を施した場合でも、白化現象の発生を防止することができる。可塑剤は透明アクリル樹脂層および着色アクリル樹脂層のいずれにブレンドしても白化現象の発生を防止することができる。しかし、化粧金属板として意匠性を高めるために、透明アクリル樹脂層と着色アクリル樹脂層の間に印刷層を設けることがある。印刷層は透明アクリル樹脂層に絵柄模様を印刷することにより形成されるが、透明アクリル樹脂層に可塑剤がブレンドされていると、印刷インキに含有されている溶剤がアクリル樹脂層に吸収されて膨潤するので、印刷が不鮮映になりやすい。そのため、印刷層を設ける場合は、可塑剤がブレンドされていない透明アクリル樹脂層に印刷を施す。このように、透明アクリル樹脂層に可塑剤がブレンドされていない場合でも、着色アクリル樹脂層に可塑剤がブレンドされていると、低温環境下で厳しい曲げ加工を施して透明アクリル樹脂層に微細なクラックが生じて白化しても、室温で経時したり加温することにより、着色アクリル樹脂層から可塑剤がブリードしてクラック中に充填されるので、白化が消失する。可塑剤がブレンドされていない着色アクリル樹脂層を用いた場合は、加工により透明アクリル樹脂層に生じた白化は、室温で経時したり加温しても消失することはない。   Therefore, in the present invention, a plasticizer is further blended into an acrylic resin obtained by blending acrylic rubber. By blending the plasticizer, it is possible to prevent the occurrence of the whitening phenomenon even when a severe bending process having a very small radius of curvature such as a dimple process is performed in a low-temperature working environment. Even if the plasticizer is blended with any of the transparent acrylic resin layer and the colored acrylic resin layer, the occurrence of the whitening phenomenon can be prevented. However, a printed layer may be provided between the transparent acrylic resin layer and the colored acrylic resin layer in order to improve the design as a decorative metal plate. The printed layer is formed by printing a pattern on the transparent acrylic resin layer. If a plasticizer is blended with the transparent acrylic resin layer, the solvent contained in the printing ink is absorbed by the acrylic resin layer. Since it swells, printing tends to be unclear. Therefore, when providing a printing layer, it prints on the transparent acrylic resin layer in which the plasticizer is not blended. Thus, even when the plasticizer is not blended with the transparent acrylic resin layer, if the plasticizer is blended with the colored acrylic resin layer, the transparent acrylic resin layer is finely subjected to severe bending under a low temperature environment. Even if cracks occur and whiten, the plasticizer bleeds from the colored acrylic resin layer and fills in the cracks by aging or heating at room temperature, and thus whitening disappears. When a colored acrylic resin layer that is not blended with a plasticizer is used, the whitening that has occurred in the transparent acrylic resin layer by processing does not disappear even after aging or heating at room temperature.

可塑剤としては、フタル酸ジメチル、フタル酸ジエチル、フタル酸ジブチル、フタル酸ジ−2−エチルヘキシル、フタル酸ジノマルオクチル、フタル酸ジイソノニル、フタル酸ジノニル、フタル酸ジイソデシル、フタル酸混基エステル(C6〜C11)、フタル酸ジブチルベンジルなどのフタル酸エステル、フタル酸エステル以外のアジピン酸ジオクチル、アジピン酸ジイソノニル、アジピン酸ジノルマルアルキル(C6、C8、C10)、アゼライン酸ジオクチル、セバシン酸ジブチル、セバシン酸ジオクチル、リン酸トリクレシル、アセチルクエン酸トリブチル、エポキシ化大豆油、トリメリット酸トリオクチル、塩素化パラフィン、ポリエステル系可塑剤などを用いることができるが、アジピン酸ジオクチル、フタル酸ジ−2−エチルヘキシル、フタル酸ジイソノニルのいずれかを用いることが好ましい。   Plasticizers include dimethyl phthalate, diethyl phthalate, dibutyl phthalate, di-2-ethylhexyl phthalate, dinomaloctyl phthalate, diisononyl phthalate, dinonyl phthalate, diisodecyl phthalate, phthalic acid mixed ester (C6 To C11), phthalates such as dibutylbenzyl phthalate, dioctyl adipate other than phthalates, diisononyl adipate, dinormal alkyl adipate (C6, C8, C10), dioctyl azelate, dibutyl sebacate, sebacic acid Dioctyl, tricresyl phosphate, tributyl acetyl citrate, epoxidized soybean oil, trioctyl trimellitic acid, chlorinated paraffin, polyester plasticizer can be used, but dioctyl adipate, di-2-ethyl phthalate Cyclohexyl, it is preferable to use any of diisononyl phthalate.

さらに、屋外用途に適用する場合は、紫外線による劣化を防止するために紫外線吸収剤をブレンドすることが好ましい。紫外線吸収剤としては、ベンゾトリアゾール系、ベンゾフェノン系、ベンゾエート系、シアノアクリレート系、サリシレート系などの各種の紫外線吸収剤を用いることができる。   Furthermore, when applied to outdoor use, it is preferable to blend an ultraviolet absorber in order to prevent deterioration due to ultraviolet rays. As the ultraviolet absorber, various ultraviolet absorbers such as benzotriazole, benzophenone, benzoate, cyanoacrylate, and salicylate can be used.

本発明の化粧金属板に用いる着色アクリル樹脂層は、上記のアクリル樹脂、アクリルゴム、可塑剤、および紫外線吸収剤を以下に示すようにブレンドして構成する。すなわち、0〜40重量%のアクリル樹脂、1〜40重量%の可塑剤、0〜20重量%の紫外線吸収剤、および残部のアクリルゴムからなり、かつアクリル樹脂、可塑剤、紫外線吸収剤、およびアクリルゴムの総和が100重量%となるようにブレンドしてなる樹脂を用い、さらにこのブレンド樹脂に着色顔料を3〜30重量%含有させた樹脂を用いる。この着色ブレンド樹脂においてアクリル樹脂は40重量%以下でブレンドされていることが好ましい。アクリル樹脂のブレンド率が低いと硬度が低下してスクラッチが生じやすくなる。そのため、耐スクラッチ性が要求される用途においてはアクリル樹脂を3〜40重量%ブレンドして、樹脂の硬度を高めることがより好ましい。可塑剤のブレンド率は加工程度により、40重量%以下でブレンドされていることが好ましい。40重量%を超えてブレンドすると白化防止の向上効果は飽和し、樹脂の硬度が低下する。紫外線吸収剤は20重量%以下でブレンドされていることが好ましい。20重量%を超えてブレンドすると紫外線劣化の防止の向上効果は飽和する。そして、残部をアクリルゴムとし、アクリル樹脂、可塑剤、紫外線吸収剤、およびアクリルゴムの総和が100重量%となるようにブレンドする。このブレンド樹脂に着色顔料を1〜30重量%含有させて、着色アクリル樹脂層を構成する。着色顔料のブレンド量は色彩にもよるが、1重量%未満であると美麗な色彩が得られにくく、30重量%を超えると曲げ加工を施した場合に樹脂フィルムにクラックを生じやすくなり、またコスト的に有利でなくなる。着色顔料として有機系または無機系の白、黒、赤、青、黄、緑、茶などの有色の顔料の1種または2種以上を上記の透明アクリル樹脂に混練し、所望の色の着色アクリル樹脂とすることができる。着色アクリル樹脂層の厚さは30〜200μmであることが好ましい。30μm未満では耐候性および耐食性が不十分となることがあり、200μmを超えても耐候性および耐食性の向上効果が飽和し、コスト的に有利でなくなる。   The colored acrylic resin layer used for the decorative metal plate of the present invention is constituted by blending the above acrylic resin, acrylic rubber, plasticizer, and ultraviolet absorber as shown below. That is, it consists of 0 to 40% by weight acrylic resin, 1 to 40% by weight plasticizer, 0 to 20% by weight ultraviolet absorber, and the remaining acrylic rubber, and the acrylic resin, plasticizer, ultraviolet absorber, and A resin obtained by blending so that the total amount of acrylic rubber is 100% by weight is used, and further, a resin in which 3 to 30% by weight of a color pigment is contained in the blended resin is used. In this colored blend resin, the acrylic resin is preferably blended at 40% by weight or less. If the blend ratio of the acrylic resin is low, the hardness is lowered and scratches are likely to occur. Therefore, in applications where scratch resistance is required, it is more preferable to blend 3 to 40% by weight of acrylic resin to increase the hardness of the resin. The blending ratio of the plasticizer is preferably blended at 40% by weight or less depending on the degree of processing. When the blending amount exceeds 40% by weight, the effect of improving whitening prevention is saturated and the hardness of the resin is lowered. The ultraviolet absorber is preferably blended at 20% by weight or less. When blending exceeds 20% by weight, the effect of preventing UV degradation is saturated. Then, the remainder is made of acrylic rubber and blended so that the total of the acrylic resin, plasticizer, ultraviolet absorber, and acrylic rubber is 100% by weight. The blended resin contains 1 to 30% by weight of a color pigment to constitute a colored acrylic resin layer. The blend amount of the colored pigment depends on the color, but if it is less than 1% by weight, it is difficult to obtain a beautiful color, and if it exceeds 30% by weight, the resin film tends to crack when bent. Cost is not advantageous. One or more of colored pigments such as organic or inorganic white, black, red, blue, yellow, green, brown, etc. as a coloring pigment are kneaded with the above transparent acrylic resin, and colored acrylic having a desired color is obtained. It can be a resin. The thickness of the colored acrylic resin layer is preferably 30 to 200 μm. If it is less than 30 μm, the weather resistance and corrosion resistance may be insufficient, and if it exceeds 200 μm, the effect of improving the weather resistance and corrosion resistance is saturated, which is not advantageous in terms of cost.

本発明の化粧金属板に用いる透明アクリル樹脂層は、上記のアクリル樹脂、アクリルゴム、および紫外線吸収剤を以下に示すようにブレンドして構成する。すなわち、0〜40重量%のアクリル樹脂、0〜20重量%の紫外線吸収剤、および残部のアクリルゴムからなり、かつアクリル樹脂、紫外線吸収剤、およびアクリルゴムの総和が100重量%となるようにブレンドしてなる樹脂を用いる。この透明ブレンド樹脂において、アクリル樹脂および紫外線吸収剤のブレンド量は、着色アクリル樹脂の場合と同様の理由で定める。そして、残部をアクリルゴムとし、アクリル樹脂、紫外線吸収剤、およびアクリルゴムの総和が100重量%となるようにブレンドする。このようにして得られる透明アクリル樹脂層は、全光線透過率が60%以上であることが好ましい。全光線透過率が60%未満であると、透明アクリル樹脂層の下に形成される印刷層の模様や着色アクリル樹脂層の色調の鮮映性に乏しくなる。透明アクリル樹脂層の厚さは10〜100μmであることが好ましい。10μm未満では立体感に乏しい意匠性となり、また、使用条件や使用環境によっては摩耗により透明アクリル樹脂層が失われ、下層である印刷層が露出してしまうことがあり、意匠耐久性に乏しい。一方、100μmを超えても意匠性や意匠耐久性の向上効果が飽和し、コスト的に有利でなくなる。   The transparent acrylic resin layer used for the decorative metal plate of the present invention is constituted by blending the above acrylic resin, acrylic rubber, and ultraviolet absorber as shown below. That is, it consists of 0 to 40% by weight of acrylic resin, 0 to 20% by weight of ultraviolet absorber, and the remaining acrylic rubber, and the total of acrylic resin, ultraviolet absorber and acrylic rubber is 100% by weight. A blended resin is used. In this transparent blend resin, the blend amount of the acrylic resin and the ultraviolet absorber is determined for the same reason as in the case of the colored acrylic resin. Then, the remainder is made of acrylic rubber and blended so that the total of the acrylic resin, the ultraviolet absorber, and the acrylic rubber is 100% by weight. The transparent acrylic resin layer thus obtained preferably has a total light transmittance of 60% or more. When the total light transmittance is less than 60%, the print layer pattern formed under the transparent acrylic resin layer and the color tone of the colored acrylic resin layer are poorly vivid. The thickness of the transparent acrylic resin layer is preferably 10 to 100 μm. If the thickness is less than 10 μm, the three-dimensional effect is poor, and the transparent acrylic resin layer may be lost due to wear depending on the use conditions and use environment, and the lower printing layer may be exposed, resulting in poor design durability. On the other hand, even if it exceeds 100 μm, the effect of improving the design property and the design durability is saturated, which is not advantageous in terms of cost.

本発明の化粧金属板においては、上記の透明アクリル樹脂層と着色アクリル樹脂層の間に石目、木目、天然皮革の表面柄、布目、抽象模様、幾何学模様などの印刷層を設ける。この印刷層を設けることにより、印刷層の模様と着色アクリル樹脂層の色彩、および透明樹脂層の厚さの立体感が相俟った、優れた意匠性が得られる。印刷層は透明アクリル樹脂層の片面に形成させる。印刷層を形成するインキのビヒクルとしては、例えばニトロセルロース、酢酸セルロース、などのセルロース誘導体、ウレタン樹脂、アクリル樹脂などの公知のものが使用できるが、なかでも密着性および耐熱性の両観点からアクリル樹脂系インキが好ましい。   In the decorative metal plate of the present invention, a print layer such as a stone pattern, a grain pattern, a natural leather surface pattern, a texture pattern, an abstract pattern, or a geometric pattern is provided between the transparent acrylic resin layer and the colored acrylic resin layer. By providing this printing layer, an excellent design property in which the pattern of the printing layer, the color of the colored acrylic resin layer, and the three-dimensional effect of the thickness of the transparent resin layer are combined is obtained. The printing layer is formed on one side of the transparent acrylic resin layer. As the ink vehicle for forming the printing layer, for example, cellulose derivatives such as nitrocellulose and cellulose acetate, urethane resins, acrylic resins, and the like can be used, but acrylics are particularly preferred from the viewpoints of adhesion and heat resistance. Resin-based inks are preferred.

本発明の化粧金属板おいて、上記の着色アクリル樹脂層および透明アクリル樹脂層を積層して被覆する基板となる金属板としては、鋼板、各種のめっき鋼板、アルミニウム合金板、およびこれらに化成処理を施したもの、ステンレス鋼板などを用いることができる。めっき鋼板としては亜鉛めっき鋼板、錫めっき鋼板、アルミニウムめっき鋼板などをあげることができるが、耐食性の観点から、電気亜鉛めっき鋼板、溶融亜鉛めっき鋼板、亜鉛−アルミニウム合金の溶融めっき鋼板、亜鉛−アルミニウム−マグネシウム合金の溶融めっき鋼板のいずれかを用いることが好ましい。また、化成処理としては塗布型クロメート処理、リン酸クロメート処理、および6価クロムを含有しない電解クロメート処理、リン酸亜鉛処理などの各種のノンクロム処理を適用することができる。   In the decorative metal plate of the present invention, as a metal plate to be a substrate on which the colored acrylic resin layer and the transparent acrylic resin layer are laminated and coated, steel plates, various plated steel plates, aluminum alloy plates, and chemical conversion treatments to these plates A stainless steel plate or the like can be used. Examples of the plated steel sheet include galvanized steel sheet, tin-plated steel sheet, and aluminum-plated steel sheet. From the viewpoint of corrosion resistance, electrogalvanized steel sheet, hot-dip galvanized steel sheet, zinc-aluminum alloy hot-dip steel sheet, zinc-aluminum. -It is preferable to use any of the hot-dip galvanized steel sheets of magnesium alloy. As the chemical conversion treatment, various non-chromium treatments such as coating chromate treatment, phosphate chromate treatment, electrolytic chromate treatment containing no hexavalent chromium, and zinc phosphate treatment can be applied.

次に、本発明の化粧金属板の形成方法について説明する。図1、図2、図3、図4はそれぞれ本発明の化粧金属板の実施態様の一例を示したものである。図1に示す化粧金属板10は以下のようにして作成される。アクリル樹脂、アクリルゴム、および紫外線吸収剤をブレンドして加熱溶融し、カレンダー法または押出法を用いて透明アクリル樹脂フィルム1を作成する。次いで透明アクリル樹脂フィルム1の片面に印刷層3を公知の印刷法を用いて形成する。また、透明アクリル樹脂フィルム1と同様のアクリル樹脂、アクリルゴムおよび紫外線吸収剤、およびさらに可塑剤と着色顔料を混練して加熱溶融し、カレンダー法または押出法を用いて着色アクリル樹脂フィルム2を作成する。このようにして得られる透明アクリル樹脂フィルム1の印刷層3を形成させた面に、熱ラミネート法を用いて着色アクリル樹脂フィルム2を積層し、複層フィルム6を作成する。   Next, the method for forming a decorative metal plate of the present invention will be described. 1, FIG. 2, FIG. 3, and FIG. 4 show examples of the embodiment of the decorative metal plate of the present invention. The decorative metal plate 10 shown in FIG. 1 is produced as follows. An acrylic resin, an acrylic rubber, and an ultraviolet absorber are blended, heated and melted, and the transparent acrylic resin film 1 is prepared using a calendar method or an extrusion method. Next, the printing layer 3 is formed on one side of the transparent acrylic resin film 1 using a known printing method. Also, the same acrylic resin, acrylic rubber and ultraviolet absorber as the transparent acrylic resin film 1, and a plasticizer and a coloring pigment are kneaded and melted by heating, and a colored acrylic resin film 2 is prepared using a calendar method or an extrusion method. To do. The colored acrylic resin film 2 is laminated on the surface of the transparent acrylic resin film 1 obtained in this way on which the printing layer 3 is formed by using a thermal laminating method, thereby creating a multilayer film 6.

一方、金属板4の片面に接着剤を塗布し乾燥して接着剤層5を形成させる。接着剤としては、酢酸ビニル樹脂系、エチレン−ビニルアセテート樹脂系、尿素樹脂系、ウレタン樹脂系、アクリル樹脂系、ポリエステル樹脂系、ポリエステルウレタン樹脂系などのエマルジョン型接着剤や、エポキシ−フェノール樹脂系などの熱硬化型接着剤を用いることができる。また図示しないが、金属板4の接着剤層5を形成させない面に、ポリエステル系、エポキシ系、アルキド系、メラミン系、尿素樹脂系、ビニル系、ポリアミド系、ポリウレタン系などからなる裏面塗料塗布層を1層もしくは2層以上形成させてもよい。   On the other hand, an adhesive is applied to one side of the metal plate 4 and dried to form the adhesive layer 5. Adhesives include emulsion type adhesives such as vinyl acetate resin, ethylene-vinyl acetate resin, urea resin, urethane resin, acrylic resin, polyester resin, polyester urethane resin, and epoxy-phenol resin. A thermosetting adhesive such as can be used. Although not shown in the drawings, the back surface coating layer made of polyester, epoxy, alkyd, melamine, urea resin, vinyl, polyamide, polyurethane, etc. is formed on the surface of the metal plate 4 where the adhesive layer 5 is not formed. One layer or two or more layers may be formed.

次いで接着剤層5を形成させた金属板4を160〜240℃に加熱し、その接着剤層5を形成させた面に複層フィルム6の着色アクリル樹脂フィルム2の面を当接し、1対の積層ロールで挟み付けて熱接着する。次いで160〜230℃に後加熱した後、水中に浸漬して急冷する。なお、後加熱する際にエンボスロールを用いて透明樹脂アクリルフィルム1の表面に深エンボス凹部7を設けてもよい。なお、深エンボス凹部7は図中では透明アクリル樹脂表面にのみ形成されるようになっているが、実際には印刷層3、着色アクリル樹脂フィルム2にも若干の凹部が形成される。このようにして、立体感がさらに向上したソフィスティケートな化粧金属板10を得ることができる。   Next, the metal plate 4 on which the adhesive layer 5 is formed is heated to 160 to 240 ° C., and the surface of the colored acrylic resin film 2 of the multilayer film 6 is brought into contact with the surface on which the adhesive layer 5 is formed. And then heat-bonded. Next, after post-heating to 160-230 ° C., it is immersed in water and rapidly cooled. In addition, you may provide the deep embossing recessed part 7 in the surface of the transparent resin acrylic film 1 using an embossing roll at the time of post-heating. The deep embossed recesses 7 are formed only on the surface of the transparent acrylic resin in the drawing, but in reality, some recesses are also formed in the printing layer 3 and the colored acrylic resin film 2. In this manner, the sophisticate decorative metal plate 10 having a further improved stereoscopic effect can be obtained.

図2に示す化粧金属板10は以下のようにして作成される。図1に示す化粧金属板における作成方法と同様の作成方法を用いて、片面に印刷層3を形成させた透明アクリル樹脂フィルム1を作成する。また、図1に示す化粧金属板における作成方法と同様の作成方法を用いて着色アクリル樹脂フィルム2を作成し、その片面に図1に示す化粧金属板の金属板4に形成させた接着剤層5と同様の接着剤層5を形成させる。このようにして得られる透明アクリル樹脂フィルム1の印刷層3を形成させた面に、着色アクリル樹脂フィルム2の接着剤層5を形成させた面を当接し、ドライラミネート法を用いて積層し、複層フィルム6を作成する。このようにして作成した複層フィルム6においては透明アクリル樹脂フィルム1と着色アクリル樹脂フィルム2の良好な接着力が得られ、金属板に積層した後に強加工を施しても樹脂層同士が剥離することがない。次いで、図1に示す化粧金属板における接着方法と同様の接着方法を用いて複層フィルムを金属板4に熱接着する。なお、熱接着する際の後加熱工程において複層フィルム6を軟化させ、エンボスロールを用いて透明樹脂アクリルフィルム1の表面に浅エンボス凹部8を設けてもよい。   The decorative metal plate 10 shown in FIG. 2 is produced as follows. The transparent acrylic resin film 1 in which the printing layer 3 is formed on one side is prepared using the same production method as that for the decorative metal plate shown in FIG. Moreover, the colored acrylic resin film 2 was created using the production method similar to the production method in the decorative metal plate shown in FIG. 1, and the adhesive layer formed on the metal plate 4 of the decorative metal plate shown in FIG. The same adhesive layer 5 as 5 is formed. The surface on which the printed layer 3 of the transparent acrylic resin film 1 thus obtained is formed is brought into contact with the surface on which the adhesive layer 5 of the colored acrylic resin film 2 is formed, and is laminated using a dry laminating method. A multilayer film 6 is prepared. In the multilayer film 6 created in this way, a good adhesive force between the transparent acrylic resin film 1 and the colored acrylic resin film 2 is obtained, and the resin layers are peeled even if subjected to strong processing after being laminated on a metal plate. There is nothing. Next, the multilayer film is thermally bonded to the metal plate 4 using the same bonding method as that for the decorative metal plate shown in FIG. In addition, the multilayer film 6 may be softened in the post-heating process at the time of heat bonding, and the shallow embossing recessed part 8 may be provided in the surface of the transparent resin acrylic film 1 using an embossing roll.

図3に示す化粧金属板10は以下のようにして作成される。図1に示す化粧金属板における作成方法と同様の作成方法を用いて透明アクリル樹脂フィルム1を作成し、その片面に図1に示す化粧金属板の金属板4に形成させた接着剤層5と同様の接着剤層5を形成させる。また、図1に示す化粧金属板における作成方法と同様の作成方法を用いて着色アクリル樹脂フィルム2を作成し、その片面に図1に示す化粧金属板における印刷方法と同様の印刷方法を用いて印刷層3を形成させる。このようにして得られる透明アクリル樹脂フィルム1の接着剤層5を形成させた面に、着色アクリル樹脂フィルム2の印刷層3を形成させた面を当接し、ドライラミネート法を用いて積層し、複層フィルム6を作成する。このようにして作成した複層フィルム6においては透明アクリル樹脂フィルム1と着色アクリル樹脂フィルム2の良好な接着力が得られる。次いで、図1に示す化粧金属板における接着方法と同様の接着方法を用いて複層フィルム6を金属板4に熱接着する。なお、熱接着する際の後加熱工程において複層フィルム6を軟化させ、エンボスロールを用いて透明樹脂アクリルフィルム1の表面に深エンボス凹部7と浅エンボス凹部8を設けてもよい。   The decorative metal plate 10 shown in FIG. 3 is produced as follows. A transparent acrylic resin film 1 is prepared using the same production method as that for the decorative metal plate shown in FIG. 1, and an adhesive layer 5 formed on the metal plate 4 of the decorative metal plate shown in FIG. A similar adhesive layer 5 is formed. Moreover, the colored acrylic resin film 2 is produced using the production method similar to the production method in the decorative metal plate shown in FIG. 1, and the printing method similar to the printing method in the decorative metal plate shown in FIG. The printing layer 3 is formed. The surface on which the printed layer 3 of the colored acrylic resin film 2 is formed is brought into contact with the surface on which the adhesive layer 5 of the transparent acrylic resin film 1 thus obtained is formed, and is laminated using a dry laminating method. A multilayer film 6 is prepared. In the multilayer film 6 produced in this way, a good adhesive force between the transparent acrylic resin film 1 and the colored acrylic resin film 2 can be obtained. Next, the multilayer film 6 is thermally bonded to the metal plate 4 using the same bonding method as that for the decorative metal plate shown in FIG. In addition, you may soften the multilayer film 6 in the post-heating process at the time of heat bonding, and may provide the deep embossing recessed part 7 and the shallow embossing recessed part 8 on the surface of the transparent resin acrylic film 1 using an embossing roll.

上記の深エンボス凹部7は最大高さ(Ry)20〜120μmであることが好ましい。また上記の浅エンボス凹部8は算術平均粗さ(Ra)0.2〜5μm、または5μmを超え10μm以下であることが好ましい。深エンボス凹部7は、ロール表面の基部が鏡面であり、その鏡面基部に最大高さ(Ry)20〜120μmとなるような凸部を凸設したエンボスロールを用いて形成する。浅エンボス凹部8は、ロール表面が算術平均粗さ(Ra)0.2〜5μm、または5μmを超え10μm以下となるように、エッチング法、放電加工法、ブラスト処理法などの粗面加工を施したエンボスロールを用いて形成する。深エンボス凹部7と浅エンボス凹部8の両方を設ける場合は、ロール表面の基部が算術平均粗さ(Ra)0.2〜5μm、または5μmを超え10μm以下の粗面であり、その粗面基部に最大高さ(Ry)が20〜120μmとなるような凸部を凸設したエンボスロールを用いる。なお、これらのエンボスロールに替えて鏡面ロールを用いることにより、透明アクリル樹脂フィルムの表面を鏡面加工した化粧金属板を得ることもできる。また、透明アクリル樹脂フィルム1と着色アクリル樹脂フィルム2を積層して複層フィルム6を作成する際に、積層用のロールとしてエンボスロールを用いて透明アクリル樹脂フィルム1の表面にエンボス凹部を設け、このようにして予めエンボス凹部を設けた複層フィルム6を金属板に積層接着してもよい。   The deep embossed recess 7 is preferably a maximum height (Ry) of 20 to 120 μm. In addition, the shallow embossed concave portion 8 preferably has an arithmetic average roughness (Ra) of 0.2 to 5 μm, or more than 5 μm and 10 μm or less. The deep embossed recess 7 is formed by using an embossing roll in which a base portion of the roll surface is a mirror surface and a convex portion having a maximum height (Ry) of 20 to 120 μm is provided on the mirror surface base portion. The shallow embossed recess 8 is subjected to roughening such as etching, electric discharge machining, blasting, etc. so that the roll surface has an arithmetic average roughness (Ra) of 0.2 to 5 μm, or more than 5 μm and 10 μm or less. The embossing roll is used to form. When both the deep embossed recess 7 and the shallow embossed recess 8 are provided, the base of the roll surface is an arithmetic average roughness (Ra) of 0.2 to 5 μm, or a rough surface exceeding 5 μm and 10 μm or less, and the rough surface base An embossing roll provided with a convex portion having a maximum height (Ry) of 20 to 120 μm is used. In addition, the decorative metal plate which mirror-processed the surface of the transparent acrylic resin film can also be obtained by using a mirror surface roll instead of these embossing rolls. Moreover, when laminating the transparent acrylic resin film 1 and the colored acrylic resin film 2 to create the multilayer film 6, an embossing recess is provided on the surface of the transparent acrylic resin film 1 using an embossing roll as a laminating roll, In this way, the multilayer film 6 provided with the embossed recesses in advance may be laminated and bonded to the metal plate.

図4に示す化粧金属板10は以下のようにして作成される。図1に示す化粧金属板における作成方法と同様の作成方法を用いて透明アクリル樹脂フィルム1を作成し、その片面に印刷層3を公知の印刷法を用いて形成する。また、図1に示す化粧金属板の作成方法と同様の作成方法を用いて着色アクリル樹脂フィルム2を作成し、透明アクリル樹脂フィルム1の印刷層3を形成させた面に、熱ラミネート法を用いて着色アクリル樹脂フィルム2を積層し、複層フィルム6を作成する。次いで、図1に示す化粧金属板の接着方法と同様の接着方法を用いて複層フィルムを金属板4に熱接着する。図示しないが、図2および図3に示すように、透明アクリル樹脂フィルム1と着色アクリル樹脂フィルム2の間に接着剤層を介在させて両者を積層し、複層フィルム6としてもよい。次いでプレスを用いて複層フィルムを金属板に被覆してなる化粧金属板10の表面にディンプル凹部9を設ける。また、予めエンボスロールを用いて図1〜3に示すように透明樹脂アクリルフィルム1の表面にエンボス凹部または/および浅エンボス凹部を設けた後、プレスを用いてディンプル凹部9を設けてもよい。   The decorative metal plate 10 shown in FIG. 4 is produced as follows. A transparent acrylic resin film 1 is created using a production method similar to the production method for the decorative metal plate shown in FIG. 1, and the printing layer 3 is formed on one side thereof using a known printing method. Moreover, the colored acrylic resin film 2 is created using the production method similar to the production method of the decorative metal plate shown in FIG. 1, and the thermal lamination method is used on the surface on which the printed layer 3 of the transparent acrylic resin film 1 is formed. The colored acrylic resin film 2 is laminated to create a multilayer film 6. Next, the multilayer film is thermally bonded to the metal plate 4 using the same bonding method as that for the decorative metal plate shown in FIG. Although not shown, as shown in FIGS. 2 and 3, both layers may be laminated by interposing an adhesive layer between the transparent acrylic resin film 1 and the colored acrylic resin film 2 to form a multilayer film 6. Next, a dimple recess 9 is provided on the surface of the decorative metal plate 10 obtained by coating the metal plate with the multilayer film using a press. Moreover, after providing an embossing recessed part or / and a shallow embossing recessed part in the surface of the transparent resin acrylic film 1 beforehand as shown in FIGS. 1-3 using an embossing roll, you may provide the dimple recessed part 9 using a press.

以下、実施例にて本発明をさらに詳細に説明する。   Hereinafter, the present invention will be described in more detail with reference to examples.

<実施例1>
[供試板の作成]
(試料番号1〜6)
アクリル樹脂(三菱レーヨン(株)製:MF001)とアクリルゴム(三菱レーヨン(株)製:IR−377)、および紫外線吸収剤(長瀬産業(株)製:TINUVIN329)、を表1に示すブレンド率(重量%、以下同様)で混合し、200℃に加熱して溶融した後、カレンダー法を用いて表1に示す光透過率および厚さを有する透明アクリル樹脂フィルムを作成した。このようにして作成した透明アクリル樹脂フィルムの片面に、アクリル樹脂インキを用いて石目模様をグラビア輪転機により印刷した。また透明アクリル樹脂フィルムに用いたものと同様のアクリル樹脂、アクリルゴム、紫外線吸収剤、および可塑剤(花王(株)製:ビニサイザー80)を表1に示すブレンド率で混合し、220℃に加熱して溶融し、これに表1に示す白色顔料(二酸化チタン)と黒色顔料(カーボンブラック)を表1に示す含有量で含有させて混練した後、カレンダー法を用いて表1に示す厚さの着色アクリル樹脂フィルムを作成した。次いで、透明アクリル樹脂フィルムの印刷層を形成させた面と着色アクリル樹脂フィルムの片面を当接して重ね合わせ、1対の積層ロールを用い、積層ロールの加熱温度:130℃、積層ロールのニップ圧:2.45MPaの条件で両フィルムを積層して、複層フィルムを作成した。一方、厚さ:0.5mmの亜鉛(91%)−アルミニウム(6%)−マグネシウム(3%)合金の溶融めっき鋼板(表1中でZA1で示す)の片面にアクリル樹脂系接着剤を乾燥後の厚さが4μmとなるように塗布し乾燥し、他の片面に裏面塗料としてエポキシメラミン塗料(下層)/ポリエステル塗料(上層)の2層を乾燥後の厚さが20μmとなるように塗布し乾燥した。この両面塗布した合金溶融めっき鋼板を220℃に加熱し、接着剤塗布面に上記の複層フィルムの着色アクリル樹脂フィルム面を当接し、1対の積層ロールを用い、積層ロールの加熱温度:110℃、積層ロールのニップ圧:2.65MPaの条件で挟み付けて熱圧着した。次いで積層体を210℃に後加熱し、ロール表面の基部が鏡面であり、その鏡面基部に種々の表面粗さの凸部を凸設したエンボスロールを用いて、透明アクリル樹脂面に表1に示す最大高さ(Ry)の深エンボス凹部(表1中でDで表示、以下同様)を形成させた。このようにして化粧金属板の供試板を得た。一部の試料に付いてはエンボス加工を施さず、複層フィルムを金属板に熱圧着したままとした。
<Example 1>
[Create test plate]
(Sample Nos. 1-6)
A blend ratio shown in Table 1 for acrylic resin (Mitsubishi Rayon Co., Ltd .: MF001), acrylic rubber (Mitsubishi Rayon Co., Ltd .: IR-377), and UV absorber (Nagase Sangyo Co., Ltd .: TINUVIN329). (% By weight, the same applies hereinafter) After being mixed and heated to 200 ° C. to melt, a transparent acrylic resin film having the light transmittance and thickness shown in Table 1 was prepared using a calendar method. A stone pattern was printed on one side of the transparent acrylic resin film thus prepared using an acrylic resin ink by a gravure rotary press. Also, the same acrylic resin, acrylic rubber, UV absorber, and plasticizer (made by Kao Corporation: Vinicizer 80) as those used for the transparent acrylic resin film were mixed at the blending ratio shown in Table 1 and heated to 220 ° C. After melting and kneading the white pigment (titanium dioxide) and black pigment (carbon black) shown in Table 1 at the contents shown in Table 1, the thickness shown in Table 1 using a calendar method is used. A colored acrylic resin film was prepared. Next, the surface on which the printed layer of the transparent acrylic resin film is formed and one surface of the colored acrylic resin film are brought into contact with each other, a pair of laminated rolls are used, the heating temperature of the laminated rolls: 130 ° C., the nip pressure of the laminated rolls : Both films were laminated under the condition of 2.45 MPa to prepare a multilayer film. On the other hand, the acrylic resin adhesive is dried on one side of a hot-plated steel sheet (indicated as ZA1 in Table 1) of a zinc (91%)-aluminum (6%)-magnesium (3%) alloy having a thickness of 0.5 mm. Apply and dry so that the subsequent thickness is 4 μm, and apply two layers of epoxy melamine paint (lower layer) / polyester paint (upper layer) as the back paint on the other side so that the thickness after drying is 20 μm And dried. The double-coated alloy hot-dip plated steel sheet is heated to 220 ° C., the colored acrylic resin film surface of the multilayer film is brought into contact with the adhesive-coated surface, and the heating temperature of the laminated roll is 110. The film was sandwiched and thermocompression bonded under the conditions of ℃, lamination roll nip pressure: 2.65 MPa. Next, the laminate was post-heated to 210 ° C., and the base of the roll surface was a mirror surface, and an embossing roll having convex portions with various surface roughnesses provided on the mirror surface base was used as shown in Table 1 on the transparent acrylic resin surface. A deep embossed depression (shown as D in Table 1 and the same below) having the maximum height (Ry) shown was formed. In this way, a test plate of a decorative metal plate was obtained. Some samples were not embossed and the multilayer film was kept hot-pressed on a metal plate.

(試料番号7〜11)
試料番号1〜6と同様のアクリル樹脂、アクリルゴム、および紫外線吸収剤を表1に示すブレンド率で混合し、200℃に加熱して溶融した後、カレンダー法を用いて表1に示す全光線透過率および厚さを有する透明アクリル樹脂フィルムを作成した。このようにして作成した透明アクリル樹脂フィルムの片面に、アクリル樹脂インキを用いて幾何学模様をグラビア輪転機により印刷した。また、試料番号1〜6と同様のアクリル樹脂、アクリルゴム、紫外線吸収剤、および可塑剤を表1に示すブレンド率で混合し、220℃に加熱して溶融し、これに表1に示す含有量で白色顔料(二酸化チタン)と緑色顔料(酸化クロム)を含有させた表1に示す厚さの着色アクリル樹脂フィルムを作成した。この着色アクリル樹脂フィルムの片面にアクリル樹脂系接着剤を乾燥後の厚さが4μmとなるように塗布し乾燥した。次いで、透明アクリル樹脂フィルムの印刷層を形成させた面と着色アクリル樹脂フィルムの接着剤層を形成させた面を当接して重ね合わせ、1対の積層ロールを用い、積層ロールの加熱温度:130℃、積層ロールのニップ圧:2.45MPaの条件で両フィルムを積層して、複層フィルムを作成した。一方、厚さ:0.5mmの亜鉛(94%)−アルミニウム(6%)合金の溶融めっき鋼板(表1中でZAで示す)の片面に試料番号1〜6と同様にしてアクリル樹脂系接着剤を塗布し乾燥し、他の片面に試料番号1〜6と同様にして裏面塗料を塗布し乾燥した。この両面塗布した合金溶融めっき鋼板を220℃に加熱し、接着剤塗布面に上記の複層フィルムの着色アクリル樹脂フィルム面を当接し、1対の積層ロールを用い、試料番号1〜6と同様にして熱圧着した。次いで積層体を220℃に後加熱し、ロール表面を種々の表面粗さに粗面加工したエンボスロールを用いて、透明アクリル樹脂面に表1に示す、算術平均粗さ(Ra)の浅エンボス凹部(表1中でSで表示、以下同様)を形成させ、次いで常温まで急冷した。このようにして化粧金属板の供試板を得た。一部の試料に付いてはエンボス加工を施さず、複層フィルムを金属板に熱圧着したままとした。
(Sample Nos. 7-11)
Acrylic resin, acrylic rubber, and UV absorber similar to those of Sample Nos. 1 to 6 were mixed at the blend ratio shown in Table 1, heated to 200 ° C. and melted, and then all rays shown in Table 1 using a calendar method. A transparent acrylic resin film having transmittance and thickness was prepared. A geometric pattern was printed on one side of the transparent acrylic resin film thus prepared using an acrylic resin ink by a gravure rotary press. In addition, the same acrylic resin, acrylic rubber, ultraviolet absorber, and plasticizer as those of Sample Nos. 1 to 6 were mixed at the blending ratio shown in Table 1, melted by heating to 220 ° C., and the contents shown in Table 1 A colored acrylic resin film having a thickness shown in Table 1 containing white pigment (titanium dioxide) and green pigment (chromium oxide) in an amount was prepared. An acrylic resin adhesive was applied to one side of the colored acrylic resin film so that the thickness after drying was 4 μm and dried. Next, the surface on which the printed layer of the transparent acrylic resin film is formed and the surface on which the adhesive layer of the colored acrylic resin film are formed are brought into contact with each other, and a heating temperature of the laminated roll is 130 using a pair of laminated rolls. Both films were laminated under the conditions of 0 ° C. and nip pressure of the laminated roll: 2.45 MPa to prepare a multilayer film. On the other hand, an acrylic resin adhesive was applied to one side of a 0.5 mm thick zinc (94%)-aluminum (6%) alloy hot-dip steel sheet (indicated by ZA in Table 1) in the same manner as in samples Nos. 1-6. The agent was applied and dried, and the back coating was applied and dried on the other side in the same manner as Sample Nos. 1-6. This double-coated alloy hot-dip plated steel sheet is heated to 220 ° C., the colored acrylic resin film surface of the multilayer film is brought into contact with the adhesive-coated surface, and a pair of laminated rolls are used, similar to sample numbers 1 to 6 And thermocompression bonded. Next, the laminated body was post-heated to 220 ° C., and the embossing roll whose surface was roughened to various surface roughnesses was used, and shallow embossing with arithmetic average roughness (Ra) shown in Table 1 on the transparent acrylic resin surface. A concave portion (indicated as S in Table 1, the same applies hereinafter) was formed, and then rapidly cooled to room temperature. In this way, a test plate of a decorative metal plate was obtained. Some samples were not embossed and the multilayer film was kept hot-pressed on a metal plate.

(試料番号12〜15)
試料番号1〜6と同様のアクリル樹脂、アクリルゴムおよび紫外線吸収剤を表1に示すブレンド率で混合し、200℃に加熱して溶融した後、カレンダー法を用いて表1に示す全光線透過率および厚さを有する透明アクリル樹脂フィルムを作成した。この透明アクリル樹脂フィルムの片面にアクリル樹脂系接着剤を乾燥後の厚さが4μmとなるように塗布し乾燥した。また、試料番号1〜6と同様のアクリル樹脂、アクリルゴム、紫外線吸収剤、および可塑剤を表1に示すブレンド率で混合し、200℃に加熱して溶融し、これに表1に示す含有量で白色顔料(二酸化チタン)と茶色顔料(ベンガラ)を含有させた表1に示す厚さの着色アクリル樹脂フィルムを作成した。この着色アクリル樹脂フィルムの片面に、ニトロセルロース−アルキドインキを用いて木目模様をグラビア輪転機により印刷した。次いで、透明アクリル樹脂フィルムの接着層を形成させた面と着色アクリル樹脂フィルムの印刷層を形成させた面を当接して重ね合わせ、1対の積層ロールを用い、試料番号7〜11と同様にして両フィルムを積層して、複層フィルムを作成した。一方、厚さ:0.5mmの溶融亜鉛めっき鋼板(表1中でZで示す)の片面に試料番号1〜6と同様にしてアクリル樹脂系接着剤を塗布し乾燥し、他の片面に試料番号1〜6と同様にして裏面塗料を塗布し乾燥した。この両面塗布した溶融亜鉛めっき鋼板を220℃に加熱し、接着剤塗布面に上記の複層フィルムの着色アクリル樹脂フィルム面を当接し、1対の積層ロールを用い、試料番号1〜6と同様にして熱圧着した。次いで積層体を210℃に後加熱し、ロール表面の基部が算術平均粗さ(Ra)の粗面であり、その粗面基部に最大高さ(Ry)である凸部を凸設したエンボスロールを用いて、透明アクリル樹脂面に表1に示す最大高さ(Ry)の深エンボス凹部(D)と算術平均粗さ(Ra)の浅エンボス凹部(S)の両方を形成させ、次いで、常温まで急冷した。このようにして化粧金属板の供試板を得た。一部の試料に付いてはエンボス加工を施さず、複層フィルムを金属板に熱圧着したままとした。
(Sample Nos. 12-15)
Acrylic resin, acrylic rubber, and ultraviolet absorber similar to those of Sample Nos. 1 to 6 were mixed at the blending ratio shown in Table 1, heated to 200 ° C. and melted, and then subjected to total light transmission shown in Table 1 using a calendar method. A transparent acrylic resin film having a thickness and a thickness was prepared. An acrylic resin adhesive was applied to one side of the transparent acrylic resin film so that the thickness after drying was 4 μm and dried. Further, the same acrylic resin, acrylic rubber, ultraviolet absorber, and plasticizer as those of Sample Nos. 1 to 6 were mixed at the blending ratio shown in Table 1, melted by heating to 200 ° C., and the contents shown in Table 1 A colored acrylic resin film having a thickness shown in Table 1 containing a white pigment (titanium dioxide) and a brown pigment (Bengara) in an amount was prepared. A wood grain pattern was printed on one side of the colored acrylic resin film by a gravure rotary press using nitrocellulose-alkyd ink. Next, the surface on which the adhesive layer of the transparent acrylic resin film is formed and the surface on which the printed layer of the colored acrylic resin film are formed are brought into contact with each other and used in the same manner as in sample numbers 7 to 11 using a pair of laminated rolls. Both films were laminated to form a multilayer film. On the other hand, an acrylic resin adhesive was applied to one side of a hot-dip galvanized steel sheet (indicated by Z in Table 1) having a thickness of 0.5 mm in the same manner as in Sample Nos. 1 to 6 and dried. The back coating was applied and dried in the same manner as in Nos. 1-6. This hot-dip galvanized steel sheet coated on both sides is heated to 220 ° C., the colored acrylic resin film surface of the multilayer film is brought into contact with the adhesive-coated surface, and a pair of laminated rolls is used, similar to sample numbers 1 to 6 And thermocompression bonded. Next, the laminated body is post-heated to 210 ° C., and the embossing roll in which the base of the roll surface is a rough surface with arithmetic average roughness (Ra) and the convex portion having the maximum height (Ry) is provided on the rough surface base. Are used to form both the deep embossed recesses (D) having the maximum height (Ry) and the shallow embossed recesses (S) having the arithmetic average roughness (Ra) shown in Table 1 on the transparent acrylic resin surface. Quenched until. In this way, a test plate of a decorative metal plate was obtained. Some samples were not embossed and the multilayer film was kept hot-pressed on a metal plate.

Figure 2006159869
Figure 2006159869

(特性評価)
上記のようにして得られた試料番号1〜15の各供試板について、下記の特性を評価した。
[表面粗さ]
試料の透明アクリル樹脂フィルム面の表面粗さを、触針式表面粗さ計(東京精密(株)製、サーフコム1500A)を用い、JIS B 0601に準拠して最大高さ(Ry)および算術平均粗さ(Ra)を測定した。
[全光線透過率]
試料の透明アクリル樹脂フィルムの光透過率を、グロスメーター(日本電色工業(株)製、グロスメーターVG2000)を用い、JIS K 7105に準拠して測定した。
(Characteristic evaluation)
The following characteristics were evaluated for each test plate of sample numbers 1 to 15 obtained as described above.
[Surface roughness]
The surface roughness of the transparent acrylic resin film surface of the sample was measured using a stylus type surface roughness meter (manufactured by Tokyo Seimitsu Co., Ltd., Surfcom 1500A) and the maximum height (Ry) and arithmetic mean according to JIS B 0601. Roughness (Ra) was measured.
[Total light transmittance]
The light transmittance of the transparent acrylic resin film of the sample was measured according to JIS K 7105 using a gloss meter (manufactured by Nippon Denshoku Industries Co., Ltd., gloss meter VG2000).

[耐白化性]
試料を気温5℃の室内で0T折り曲げ加工し、次いで加工直後、および40℃で24時間加温した後の、曲げ加工部の樹脂層の白化の発生程度を肉眼観察し、下記の基準で評価した。
◎:白化の発生は認められない。
○:実用上問題とならない程度の僅かな白化の発生が認められる。
△:実用上問題となる程度の白化の発生が認められる。
×:クラックの発生が認められる。
[Whitening resistance]
The sample was subjected to 0T bending in a room with a temperature of 5 ° C., and then the degree of whitening of the resin layer in the bent portion was observed immediately after processing and after heating at 40 ° C. for 24 hours, and evaluated according to the following criteria: did.
A: Whitening is not observed.
○: Slight whitening that does not cause a practical problem is observed.
(Triangle | delta): Generation | occurrence | production of the whitening of the grade which becomes a practical problem is recognized.
X: Generation | occurrence | production of a crack is recognized.

[耐候性]
試料の樹脂フィルムにカッター刃を用いて基板の鋼板面に達するクロスカットを施し、サンシャインウェザオメータ試験(JIS A 1415)を試験時間8000時間にわたって実施した後、クロスット部の周辺部を肉眼観察し、下記の基準で評価した。
◎:変色、クラック、ブリスターの発生は認められない。
○:クロスカット部に実用上問題とならない程度の極く僅かなブリスターの発生が認 められる。
△:クロスカット部に実用上問題となる程度の変色、クラック、ブリスターの発生が 認められる。
×:試料全面にかなりの程度に変色、クラック、ブリスターの発生が認められる。
評価結果を表2に示す。
[Weatherability]
The resin film of the sample was cross-cut reaching the steel plate surface of the substrate using a cutter blade, and after conducting a sunshine weatherometer test (JIS A 1415) over a test time of 8000 hours, the periphery of the cross-cut portion was visually observed. The evaluation was based on the following criteria.
A: No discoloration, cracks or blisters are observed.
○: A very small amount of blisters is observed in the cross-cut part to the extent that it does not cause a practical problem.
Δ: Discoloration, cracks, and blisters that cause practical problems are observed in the cross-cut portion.
X: Discoloration, cracks, and blisters are observed to a considerable extent on the entire surface of the sample.
The evaluation results are shown in Table 2.

Figure 2006159869
Figure 2006159869

<実施例2>
試料番号3、6、8、11、13、15の供試板に、各供試板の複層フィルム被覆面にプレス装置を用いて、12.7mm径の半球を深さ3mmまで押し込み、図4に示すようなディンプル凹部9を形成させた化粧金属板10としたところ、ディンプル縁部9aの周辺に白化が生じた。次いで、これらのディンプル凹部9を形成させた供試板を40℃で24時間加温したところ、試料番号3、8、13の供試板では白化が消失したが、試料番号6、11、15の供試板では白化が残存していた。
<Example 2>
The test plate of sample numbers 3, 6, 8, 11, 13, and 15 was pressed with a 12.7 mm diameter hemisphere to a depth of 3 mm using a press device on the multilayer film-coated surface of each test plate. When the decorative metal plate 10 was formed with the dimple recess 9 as shown in FIG. 4, whitening occurred around the dimple edge 9a. Next, when the test plates on which these dimple recesses 9 were formed were heated at 40 ° C. for 24 hours, whitening disappeared in the test plates of sample numbers 3, 8, and 13, but sample numbers 6, 11, 15 In the test plate, whitening remained.

表2に示すように、本発明の化粧金属板の供試板は耐白化性および耐候性に優れており、厳しい曲げ加工を施しても樹脂層に白化が生じにくく、白化が生じても室温で経時したり加温することにより、白化を消失させることができる。すなわち表2に示すように加工直後、白化していても、加温することにより実用上問題ないレベルに回復する。また、長時間屋外に暴露しても樹脂フィルムにブリスター、クラック、変色などの発生は認められず、優れた意匠性を保持することができる。   As shown in Table 2, the decorative metal plate test plate of the present invention is excellent in whitening resistance and weather resistance, and even when subjected to severe bending, the resin layer is hardly whitened, and even if whitening occurs, it is room temperature. The whitening can be eliminated by elapse of time or heating. That is, as shown in Table 2, even after whitening immediately after processing, it is recovered to a level that is practically no problem by heating. Moreover, even if it is exposed outdoors for a long time, generation | occurrence | production of a blister, a crack, discoloration, etc. is not recognized by the resin film, but the outstanding design property can be hold | maintained.

本発明の化粧金属板は、アクリル樹脂、アクリルゴムおよび紫外線吸収剤をブレンドしてなる透明アクリル樹脂層と、アクリル樹脂、アクリルゴム、紫外線吸収剤、および可塑剤をブレンドしてなるブレンド樹脂に着色顔料を含有させた着色アクリル樹脂層の間に印刷層を形成させてなる複層樹脂を亜鉛鋼板などの金属板に積層し、選択的に透明アクリル樹脂層の表面にエンボス凹部を形成させた化粧金属板であり、着色アクリル樹脂層がアクリルゴムおよび可塑剤を含有しているので加工性に優れており、また透明アクリル樹脂層がアクリルゴムを含有しているので加工性に優れ、低温の作業環境下でディンプル加工のような曲率半径の小さな厳しい曲げ加工を施した場合でも最表面の透明アクリル樹脂層に微小クラックが生じることによる白化現象が発生しにくく、また白化現象が発生しても加温することにより、着色アクリル樹脂層中に含有される可塑剤が透明アクリル樹脂層にブリードして微小クラックに充填されて白化が消失する。そのため、曲率半径の小さな厳しい曲げ加工を施す加工用途に好適に適用できる。また、紫外線吸収剤を含有しているので耐候性に優れている。さらにまた、透明アクリル樹脂は比較的硬い樹脂であるので耐磨耗性にも優れており、そのため下層の印刷層を保護することができ、意匠耐久性にも優れている。そのため、建物外部の屋根材、壁材、ドアなどの屋外建材や、建物内部の壁材、仕切材、ドアなどの屋外建材などに好適に適用できる。   The decorative metal plate of the present invention is colored in a transparent acrylic resin layer obtained by blending acrylic resin, acrylic rubber and an ultraviolet absorber, and a blend resin obtained by blending acrylic resin, acrylic rubber, ultraviolet absorber and plasticizer. Cosmetics in which a multi-layer resin formed by forming a printing layer between colored acrylic resin layers containing pigments is laminated on a metal plate such as a galvanized steel plate, and an embossed recess is selectively formed on the surface of the transparent acrylic resin layer It is a metal plate, and the colored acrylic resin layer contains acrylic rubber and a plasticizer, so it is excellent in workability, and since the transparent acrylic resin layer contains acrylic rubber, it is excellent in workability and low temperature work. Even when severe bending with a small radius of curvature, such as dimple processing, is performed in the environment, microcracks are generated in the outermost transparent acrylic resin layer. The whitening phenomenon is difficult to occur, and even when the whitening phenomenon occurs, the plasticizer contained in the colored acrylic resin layer bleeds into the transparent acrylic resin layer and fills in the microcracks, and the whitening disappears. To do. Therefore, the present invention can be suitably applied to a processing application in which severe bending with a small radius of curvature is performed. Further, since it contains an ultraviolet absorber, it has excellent weather resistance. Furthermore, since the transparent acrylic resin is a relatively hard resin, it has excellent wear resistance, so that the lower printing layer can be protected and the design durability is also excellent. Therefore, it can be suitably applied to outdoor building materials such as roof materials, wall materials, and doors outside the building, and outdoor building materials such as wall materials, partition materials, and doors inside the building.

本発明の化粧金属板の実施態様の一例を示す模式断面図。The schematic cross section which shows an example of the embodiment of the decorative metal plate of this invention. 本発明の化粧金属板の実施態様の他の一例を示す模式断面図。The schematic cross section which shows another example of the embodiment of the decorative metal plate of this invention. 本発明の化粧金属板の実施態様の他の一例を示す模式断面図。The schematic cross section which shows another example of the embodiment of the decorative metal plate of this invention. 本発明の化粧金属板の実施態様の他の一例を示す模式断面図。The schematic cross section which shows another example of the embodiment of the decorative metal plate of this invention.

符号の説明Explanation of symbols

1 : 透明アクリル樹脂フィルム
2 : 着色アクリル樹脂フィルム
3 : 印刷層
4 : 金属板
5 : 接着剤層
6 : 複層フィルム
7 : 深エンボス凹部
8 : 浅エンボス凹部
9 : ディンプル凹部
9a: ディンプル縁部
10 : 化粧金属板
1: Transparent acrylic resin film 2: Colored acrylic resin film 3: Printing layer 4: Metal plate 5: Adhesive layer 6: Multilayer film 7: Deep embossed recess 8: Shallow embossed recess 9: Dimple recess 9a: Dimple edge 10 : Decorative metal plate

Claims (6)

金属板の少なくとも片面に、表層側から順に、透明アクリル樹脂層、印刷層、可塑剤を含有する着色アクリル樹脂層、接着剤層を形成させてなる、化粧金属板。   A decorative metal plate in which a transparent acrylic resin layer, a printed layer, a colored acrylic resin layer containing a plasticizer, and an adhesive layer are formed on at least one surface of the metal plate in order from the surface layer side. 前記着色アクリル樹脂層は、0〜40重量%のアクリル樹脂、1〜40重量%の可塑剤、0〜20重量%の紫外線吸収剤、および残部のアクリルゴムからなり、かつアクリル樹脂、可塑剤、紫外線吸収剤、およびアクリルゴムの総和が100重量%となるようにブレンドしてなることを特徴とする、請求項1に記載の化粧金属板。   The colored acrylic resin layer is composed of 0 to 40% by weight acrylic resin, 1 to 40% by weight plasticizer, 0 to 20% by weight ultraviolet absorber, and the remaining acrylic rubber, and the acrylic resin, plasticizer, The decorative metal plate according to claim 1, wherein the decorative metal plate is blended so that the total amount of the ultraviolet absorber and the acrylic rubber is 100% by weight. 前記透明アクリル樹脂層は、0〜40重量%のアクリル樹脂、0〜20重量%の紫外線吸収剤、および残部のアクリルゴムからなり、かつアクリル樹脂、紫外線吸収剤、およびアクリルゴムの総和が100重量%となるようにブレンドしてなることを特徴とする、請求項1または2に記載の化粧金属板。   The transparent acrylic resin layer is composed of 0 to 40% by weight of acrylic resin, 0 to 20% by weight of UV absorber, and the remaining acrylic rubber, and the total of the acrylic resin, UV absorber, and acrylic rubber is 100%. The decorative metal plate according to claim 1, wherein the decorative metal plate is blended so as to be%. 前記透明アクリル樹脂層は表面にエンボス加工による凹部が形成されてなることを特徴とする、請求項1〜3のいずれかに記載の化粧金属板。   The decorative metal plate according to any one of claims 1 to 3, wherein the transparent acrylic resin layer has a surface formed with a recess by embossing. 表面にディンプル加工を施してなる、請求項1〜4のいずれかに記載の化粧金属板。   The decorative metal plate according to any one of claims 1 to 4, wherein the surface is subjected to dimple processing. 前記金属板が亜鉛めっき鋼板であることを特徴とする、請求項1〜5のいずれかに記載の化粧金属板。   The decorative metal plate according to claim 1, wherein the metal plate is a galvanized steel plate.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009263891A (en) * 2008-04-22 2009-11-12 Cci Corp Vibration damping paint composition for roof and roof structure
JP2019064093A (en) * 2017-09-29 2019-04-25 大日本印刷株式会社 Decorative sheet, decorative material and manufacturing method of decorative sheet

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JPS5549256A (en) * 1978-10-04 1980-04-09 Mitsubishi Plastics Ind Acryl resin laminated metallic plate
JP2002292789A (en) * 2001-03-30 2002-10-09 Toyo Kohan Co Ltd Resin coated metal panel
JP2004100229A (en) * 2002-09-06 2004-04-02 Nihon Funen Co Ltd Building door
JP2004142164A (en) * 2002-10-22 2004-05-20 Toyo Kohan Co Ltd Decorative metal plate

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Publication number Priority date Publication date Assignee Title
JPS5549256A (en) * 1978-10-04 1980-04-09 Mitsubishi Plastics Ind Acryl resin laminated metallic plate
JP2002292789A (en) * 2001-03-30 2002-10-09 Toyo Kohan Co Ltd Resin coated metal panel
JP2004100229A (en) * 2002-09-06 2004-04-02 Nihon Funen Co Ltd Building door
JP2004142164A (en) * 2002-10-22 2004-05-20 Toyo Kohan Co Ltd Decorative metal plate

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009263891A (en) * 2008-04-22 2009-11-12 Cci Corp Vibration damping paint composition for roof and roof structure
JP2019064093A (en) * 2017-09-29 2019-04-25 大日本印刷株式会社 Decorative sheet, decorative material and manufacturing method of decorative sheet
JP6996201B2 (en) 2017-09-29 2022-01-17 大日本印刷株式会社 Manufacturing method of decorative sheet, decorative material and decorative sheet

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