JP2016147387A - Decorative sheet, and metal decorative plate - Google Patents

Decorative sheet, and metal decorative plate Download PDF

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JP2016147387A
JP2016147387A JP2015024088A JP2015024088A JP2016147387A JP 2016147387 A JP2016147387 A JP 2016147387A JP 2015024088 A JP2015024088 A JP 2015024088A JP 2015024088 A JP2015024088 A JP 2015024088A JP 2016147387 A JP2016147387 A JP 2016147387A
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layer
thickness
resin
mass
acrylic resin
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JP6476948B2 (en
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新名　勝之
Katsuyuki Niina
勝之 新名
孝史 冨永
Takashi Tominaga
孝史 冨永
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Toppan Inc
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Toppan Printing Co Ltd
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Priority to JP2015024088A priority Critical patent/JP6476948B2/en
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Priority to KR1020177016765A priority patent/KR102338121B1/en
Priority to EP15879813.2A priority patent/EP3251842B1/en
Priority to ES15879813T priority patent/ES2912673T3/en
Priority to CN201580072607.3A priority patent/CN107107593B/en
Priority to PCT/JP2015/002581 priority patent/WO2016120912A1/en
Priority to PL15879813T priority patent/PL3251842T3/en
Publication of JP2016147387A publication Critical patent/JP2016147387A/en
Priority to US15/639,779 priority patent/US10399301B2/en
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Abstract

PROBLEM TO BE SOLVED: To provide a decorative plate which has weather resistance, contamination resistance, workability and incombustibility, and can prevent generation of dioxin at the time of disposal.SOLUTION: In a decorative sheet 10 in which a pattern layer 2 and two or more transparent thermoplastic resin layers 4 are laminated on a base material layer 1 in this order, an outermost layer 4b of the transparent thermoplastic resin layer 4 is formed of a fluorine resin, an inside layer 4a of the transparent thermoplastic resin layer is formed of a mixture of an acrylic resin and an acrylic resin-based rubber, a mixing ratio of the acrylic resin is 40 mass% or more and 70 mass% or less, a mixing ratio of the acrylic resin-based rubber is 30 mass% or more and 60 mass% or less, a ratio of the thickness of the outermost layer 4b of the transparent thermoplastic resin layer 4 and the thickness of the inside layer 4a thereof is in a range of 10:90 to 40:60, the base material layer 1 is formed of a polyolefine-based resin and has a thickness of 30 μm or more and 70 μm or less, and the decorative sheet 10 has a total thickness of 80 μm or more and 130 μm or less and has incombustibility.SELECTED DRAWING: Figure 1

Description

本発明は、建築内装、間仕切、収納家具等の表面化粧材、建築準外装（玄関ドア、同枠材、窓枠）、及び出窓カウンター等に使用される化粧シート、及び金属化粧板に関する。   The present invention relates to a decorative sheet used for a surface decorative material such as a building interior, partition, storage furniture, a semi-exterior building (entrance door, frame material, window frame), a bay window counter, and the like, and a metal decorative plate.

従来、化粧シートとしては、例えば、特許文献１（段落０００３）に記載の技術がある。特許文献１に記載の技術では、塩化ビニルからなる基材層上に、耐候性に優れたアクリル樹脂層を積層して積層シートを形成している。   Conventionally, as a decorative sheet, for example, there is a technique described in Patent Document 1 (paragraph 0003). In the technique described in Patent Document 1, an acrylic resin layer having excellent weather resistance is laminated on a base material layer made of vinyl chloride to form a laminated sheet.

特開２０００−３２６４５１号公報JP 2000-326451 A

しかしながら、アクリル樹脂は、耐候性に優れているものの、耐汚染性、耐油性、及び耐溶剤性が低いために、汚れが付着し易く、また付着した汚れを溶剤で拭き取ることができないという問題がある。また、加工性、及び不燃性が低いという問題もある。また、塩化ビニル樹脂は、廃棄の際に燃焼させると、ダイオキシンを発生するという問題もある。
本発明は、上記のような点に着目したもので、耐候性、耐汚染性、加工性、及び不燃性を有するとともに、廃棄時にダイオキシンが発生することがなく、さらに、加工性と不燃性とをともに良好にすることが可能な化粧シート、及び金属化粧板を提供することを目的としている。 However, although acrylic resin is excellent in weather resistance, there is a problem that dirt is likely to adhere because the stain resistance, oil resistance, and solvent resistance are low, and the attached dirt cannot be wiped off with a solvent. is there. There is also a problem that workability and nonflammability are low. Further, the vinyl chloride resin also has a problem of generating dioxins when burned at the time of disposal.
The present invention focuses on the above points, has weather resistance, stain resistance, workability, and nonflammability, and does not generate dioxin at the time of disposal, and further has workability and nonflammability. An object of the present invention is to provide a decorative sheet and a metal decorative plate capable of improving both of the above.

上記課題を解決するために、本発明の一態様である化粧シートは、基材層上に、絵柄模様層、及び２層以上の透明熱可塑性樹脂層をこの順に積層し、透明熱可塑性樹脂層の最外層がフッ素樹脂からなり、透明熱可塑性樹脂層の最外層以外の層である内側層は、アクリル樹脂とアクリル樹脂系ゴムとの混合物からなり、その混合比率は、アクリル樹脂が４０質量％以上７０質量％以下であり、アクリル樹脂系ゴムが３０質量％以上６０質量％以下であり、透明熱可塑性樹脂層の最外層の厚みとその内側層の厚みとの比率が１０：９０から４０：６０の範囲であり、基材層は、ポリオレフィン系樹脂からなり、基材層の厚みが３０μｍ以上７０μｍ以下であり、化粧シートの総厚みが８０μｍ以上１３０μｍ以下であり、不燃性を有することを特徴とする。   In order to solve the above-mentioned problems, a decorative sheet according to one embodiment of the present invention is a transparent thermoplastic resin layer in which a pattern layer and two or more transparent thermoplastic resin layers are laminated in this order on a base material layer. The outermost layer is made of a fluororesin, and the inner layer, which is a layer other than the outermost layer of the transparent thermoplastic resin layer, is made of a mixture of an acrylic resin and an acrylic resin rubber, and the mixing ratio is 40% by mass of the acrylic resin. 70 mass% or less, acrylic resin rubber is 30 mass% or more and 60 mass% or less, and the ratio of the thickness of the outermost layer of the transparent thermoplastic resin layer to the thickness of its inner layer is 10:90 to 40: The base layer is made of polyolefin resin, the thickness of the base layer is 30 μm or more and 70 μm or less, the total thickness of the decorative sheet is 80 μm or more and 130 μm or less, and is nonflammable. To.

ここで、不燃性は、ＩＳＯ５６６０−１に準拠し、建築基準法第二条第９号及び建築基準法施工令第１０８条の２に基づく防耐火試験方法と性能評価規格に従うコーンカロリーメーター試験機による発熱性試験において（１）加熱開始後２０分間の総発熱量が８ＭＪ／ｍ2以下であり（２）加熱開始後２０分間、最大発熱速度が１０秒以上継続して２００ＫＷ／ｍ2を超えず（３）加熱開始後２０分間、防火上有害な亀裂及び穴がない条件を満たすだけの不燃性を有することが好ましい。 Here, incombustibility is based on ISO 5660-1 and conforms to the Building Standards Act Article 2 No. 9 and the Building Standards Act Construction Ordinance Article 108-2. (1) The total calorific value for 20 minutes after the start of heating is 8 MJ / m 2 or less. (2) The maximum heat generation rate continues for 10 seconds or more and exceeds 200 kW / m 2 for 20 minutes after the start of heating. (3) It is preferable to have incombustibility sufficient to satisfy the condition of no cracks and holes harmful to fire prevention for 20 minutes after the start of heating.

本発明の一態様によれば、基材層にアクリル樹脂及びアクリル樹脂系ゴムの混合物からなる層と、フッ素樹脂からなる層とを積層したため、耐候性、耐汚染性、加工性、及び不燃性を有する。また、基材層をポリオレフィン系樹脂としたため、廃棄時にダイオキシンが発生することを防止できる。これにより、耐候性、耐汚染性、加工性、及び不燃性を有し、廃棄時にダイオキシンが発生することを防止できる化粧シートを提供することができる。   According to one embodiment of the present invention, a layer made of a mixture of an acrylic resin and an acrylic resin rubber and a layer made of a fluororesin are laminated on the base material layer, so that weather resistance, stain resistance, workability, and nonflammability Have Moreover, since the base material layer is a polyolefin resin, it is possible to prevent dioxins from being generated at the time of disposal. Thereby, it can provide the decorative sheet which has a weather resistance, stain resistance, workability, and nonflammability and can prevent generation | occurrence | production of dioxin at the time of disposal.

本発明に基づく実施形態に係る金属化粧板を示す断面図である。It is sectional drawing which shows the metal decorative board which concerns on embodiment based on this invention.

次に、本発明の実施形態について図面を参照して説明する。
ここで、図面は模式的なものであり、厚みと平面寸法との関係、各層の厚みの比率等は現実のものとは異なる。また、以下に示す実施形態は、本発明の技術的思想を具体化するための構成を例示するものであって、本発明の技術的思想は、構成部品の材質、形状、及び構造等が下記のものに特定するものでない。本発明の技術的思想は、特許請求の範囲に記載された請求項が規定する技術的範囲内において、種々の変更を加えることができる。 Next, embodiments of the present invention will be described with reference to the drawings.
Here, the drawings are schematic, and the relationship between the thickness and the planar dimensions, the ratio of the thickness of each layer, and the like are different from the actual ones. Further, the embodiment described below exemplifies a configuration for embodying the technical idea of the present invention, and the technical idea of the present invention is that the material, shape, structure, etc. of the component parts are as follows. It is not something specific. The technical idea of the present invention can be variously modified within the technical scope defined by the claims described in the claims.

（金属化粧板２０）
本実施形態の金属化粧板２０は、図１に示すように、基材層１の一方の面側に、絵柄模様層２、透明接着剤層３、及び２層以上の透明熱可塑性樹脂層４がこの順に積層されて化粧シート１０が形成され、基材層１の他方の面側に、接着剤層５を介して金属板６を貼り合わせて構成される。 (Metal decorative board 20)
As shown in FIG. 1, the metal decorative board 20 of the present embodiment has a pattern layer 2, a transparent adhesive layer 3, and two or more transparent thermoplastic resin layers 4 on one surface side of the base material layer 1. Are laminated in this order to form a decorative sheet 10, and a metal plate 6 is bonded to the other surface side of the base material layer 1 via an adhesive layer 5.

（基材層１）
基材層１は、熱可塑性樹脂からなるシート状の層である。熱可塑性樹脂としては、特に限定されず、既知の熱可塑性樹脂を用いることができる。例えば、ポリエチレン、ポリプロピレン、ポリブテン、ポリメチルペンテン等のポリオレフィン系樹脂、エチレン−酢酸ビニル共重合体又はその鹸化物、エチレン−（メタ）アクリル酸（エステル）共重合体等のポリオレフィン系共重合体、ポリエチレンテレフタレート、ポリブチレンテレフタレート、ポリエチレンナフタレート、ポリアリレート、ポリカーボネート、共重合ポリエステル（代表的には１，４−シクロヘキサンジメタノール共重合ポリエチレンテレフタレート樹脂である通称ＰＥＴ−Ｇ）等のポリエステル系樹脂、ポリメタクリル酸メチル等のアクリル系樹脂、６−ナイロン、６，６−ナイロン、６，１０−ナイロン、１２−ナイロン等のポリアミド系樹脂、ポリスチレン、ＡＳ樹脂、ＡＢＳ樹脂等のスチレン系樹脂、セルロースアセテート、ニトロセルロース等の繊維素誘導体、ポリ塩化ビニル、ポリ塩化ビニリデン等の塩素系樹脂、ポリフッ化ビニル、ポリフッ化ビニリデン、ポリテトラフロロエチレン、エチレン−テトラフロロエチレン共重合体等のフッ素系樹脂等、又はこれらから選ばれる２種又は３種以上の共重合体や混合物、複合体、積層体等を使用することができる。特に、溶融押し出し装置での生産性、環境適合性、機械強度、耐久性、価格等を考慮すれば、ポリオレフィン系樹脂がより好ましい。これにより、廃棄時に燃焼させてもダイオキシンが発生しない。ポリオレフィン系樹脂としては、例えば、ポリプロピレン樹脂、ポリエチレン樹脂がある。より具体的には、熱可塑性樹脂は、有機顔料及び無機顔料の少なくともいずれかを混合して着色されている着色ポリプロピレンであることが好ましい。有機顔料、無機顔料の色は、化粧シート１０の意匠に合わせた基材色が設定されている。基材層１の厚みは、加工性及び不燃性等を考慮すれば、３０μｍ以上７０μｍ以下が好ましい。 (Base material layer 1)
The base material layer 1 is a sheet-like layer made of a thermoplastic resin. It does not specifically limit as a thermoplastic resin, A well-known thermoplastic resin can be used. For example, a polyolefin resin such as polyethylene, polypropylene, polybutene, polymethylpentene, an ethylene-vinyl acetate copolymer or a saponified product thereof, a polyolefin copolymer such as an ethylene- (meth) acrylic acid (ester) copolymer, Polyester resins such as polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polyarylate, polycarbonate, copolymerized polyester (typically known as PET-G, which is a 1,4-cyclohexanedimethanol copolymerized polyethylene terephthalate resin), poly Acrylic resins such as methyl methacrylate, polyamide resins such as 6-nylon, 6,6-nylon, 6,10-nylon and 12-nylon, styrene resins such as polystyrene, AS resin and ABS resin, cell Fiber derivatives such as acetoacetate and nitrocellulose, chlorinated resins such as polyvinyl chloride and polyvinylidene chloride, fluorinated resins such as polyvinyl fluoride, polyvinylidene fluoride, polytetrafluoroethylene, ethylene-tetrafluoroethylene copolymer, etc. Alternatively, two or more kinds of copolymers or mixtures selected from these, mixtures, composites, laminates, and the like can be used. In particular, polyolefin resin is more preferable in view of productivity in a melt extrusion apparatus, environmental compatibility, mechanical strength, durability, price, and the like. Thereby, even if it burns at the time of disposal, dioxin is not generated. Examples of the polyolefin resin include polypropylene resin and polyethylene resin. More specifically, the thermoplastic resin is preferably a colored polypropylene that is colored by mixing at least one of an organic pigment and an inorganic pigment. As the colors of the organic pigment and the inorganic pigment, a base material color that matches the design of the decorative sheet 10 is set. The thickness of the base material layer 1 is preferably 30 μm or more and 70 μm or less in consideration of workability and nonflammability.

（絵柄模様層２）
絵柄模様層２は、意匠性を付与するための絵柄が印刷された層である。絵柄としては、例えば、木目、コルク、石目、タイル、焼き物、抽象柄等、化粧シート１０を用いる箇所に適した絵柄を選ぶことができる。また、印刷インキについても、印刷適性や耐候性等を考慮すれば、特に限定されず、既知の印刷インキを用いることができる。例えば、イソインドリノン、ジスアゾ、ポリアゾ、ジケトピロロピロール、キイナクリドン、フタロシアニン、酸化チタン、カーボンブラックを顔料とする印刷インキを使用することができる。また、顔料を組み合わせて配合することで、絵柄の表現を豊かにすることができる。また、紫外線吸収剤や光安定剤等を添加することで、耐候性を良好にすることもできる。
また、絵柄の印刷方法としては、例えば、グラビア印刷、オフセット印刷、シルクスクリーン印刷、インクジェット印刷等、既知の印刷方法を用いることができ、全面に同一色を着色する場合には、印刷方法のほかコーティングの手法や装置を用いてもよい。 (Picture pattern layer 2)
The design pattern layer 2 is a layer on which a design for imparting design properties is printed. As the pattern, for example, a pattern suitable for a place where the decorative sheet 10 is used, such as wood grain, cork, stone grain, tile, pottery, and abstract pattern can be selected. Further, the printing ink is not particularly limited as long as the printability and weather resistance are taken into consideration, and a known printing ink can be used. For example, a printing ink having pigments of isoindolinone, disazo, polyazo, diketopyrrolopyrrole, quinacridone, phthalocyanine, titanium oxide, and carbon black can be used. Moreover, the expression of a pattern can be enriched by mix | blending combining a pigment. Moreover, weather resistance can also be made favorable by adding a ultraviolet absorber, a light stabilizer, etc.
In addition, as a pattern printing method, for example, a known printing method such as gravure printing, offset printing, silk screen printing, ink jet printing, etc. can be used. A coating technique or apparatus may be used.

（透明接着剤層３）
透明接着剤層３は、透明な接着剤からなるシート状の層である。透明な接着剤としては、特に限定されず、既知の接着剤を用いることができる。例えば、ポリアミド樹脂、アクリル樹脂、酢酸ビニル樹脂等の熱可塑性樹脂、熱硬化性ウレタン樹脂等の硬化性樹脂を使用することができる。また、例えば、イソシアネートを硬化剤とする２液硬化型ウレタン樹脂やポリエステル樹脂等であってもよい。本実施形態では、透明な接着剤として、ヒートシール剤であるアクリル樹脂−ポリエステル樹脂−塩化酢酸ビニル系樹脂を使用する。 (Transparent adhesive layer 3)
The transparent adhesive layer 3 is a sheet-like layer made of a transparent adhesive. The transparent adhesive is not particularly limited, and a known adhesive can be used. For example, a thermoplastic resin such as a polyamide resin, an acrylic resin, or a vinyl acetate resin, or a curable resin such as a thermosetting urethane resin can be used. Further, for example, a two-component curable urethane resin or polyester resin using isocyanate as a curing agent may be used. In this embodiment, an acrylic resin-polyester resin-vinyl chloride acetate resin that is a heat sealant is used as the transparent adhesive.

（透明熱可塑性樹脂層４）
透明熱可塑性樹脂層４は、最外層４ｂとその内側の内側層４ａとからなる。内側層４ａは、２層以上あってもよい。ただし、加工性及び不燃性を考慮すれば、透明熱可塑性樹脂層４の総厚みが８０μｍ以上１３０μｍ以下の範囲となるように設計されている。 (Transparent thermoplastic resin layer 4)
The transparent thermoplastic resin layer 4 includes an outermost layer 4b and an inner layer 4a on the inner side. There may be two or more inner layers 4a. However, in consideration of workability and incombustibility, the total thickness of the transparent thermoplastic resin layer 4 is designed to be in the range of 80 μm to 130 μm.

（内側層４ａ）
内側層４ａは、アクリル樹脂とアクリル樹脂系ゴムとの混合物からなるシート状の層である。アクリル樹脂としては、特に限定されず、既知のアクリル樹脂を用いることができる。例えば、メチルメタクリレート樹脂、ポリメチルメタクリレート樹脂（Ｔｇは−２０℃程度）を使用することができる。また、アクリル樹脂に公知の紫外線吸収剤、光安定剤を添加してもよい。これらの混合比率は、アクリル樹脂が４０質量％以上７０質量％以下であり、アクリル樹脂系ゴムが３０質量％以上６０質量％以下に設定されている。これにより、加工性を向上することができる。「混合比率は、アクリル樹脂が４０質量％以上７０質量％以下であり、アクリル樹脂系ゴムが３０質量％以上６０質量％以下」とは、アクリル樹脂とアクリル樹脂系ゴムとの混合比率が、質量比で、４：６〜７：３を指す。 (Inner layer 4a)
The inner layer 4a is a sheet-like layer made of a mixture of an acrylic resin and an acrylic resin rubber. The acrylic resin is not particularly limited, and a known acrylic resin can be used. For example, a methyl methacrylate resin or a polymethyl methacrylate resin (Tg is about −20 ° C.) can be used. Moreover, you may add a well-known ultraviolet absorber and light stabilizer to an acrylic resin. These mixing ratios are set such that the acrylic resin is 40 mass% or more and 70 mass% or less, and the acrylic resin rubber is 30 mass% or more and 60 mass% or less. Thereby, workability can be improved. “The mixing ratio is 40% by mass or more and 70% by mass or less of acrylic resin and 30% by mass or more and 60% by mass or less of acrylic resin rubber” means that the mixing ratio of acrylic resin and acrylic resin rubber is mass. The ratio refers to 4: 6 to 7: 3.

（最外層４ｂ）
最外層４ｂは、フッ素樹脂からなるシート状の層である。フッ素樹脂としては、特に限定されず、既知のフッ素樹脂を用いることができる。例えば、ポリフッ化ビニリデン（ＰＶＤＦ）、四フッ化エチレン樹脂（ＰＴＦＥ）、四フッ化エチレンペルフルオロアルコキシビニルエーテル共重合体（ＰＦＡ）、四フッ化エチレン・六フッ化プロピレン共重合体（ＦＥＰ）、ポリクロロトリフルオロエチレン（ＰＣＴＦＥ）、四フッ化エチレン・エチレン共重合体（ＥＴＦＥ）、クロロトリフルオロエチレン・エチレン共重合体（ＥＣＴＦＥ）、ポリビニルフロライド（ＰＶＦ）を使用できる。特に、折り曲げ白化性、内側層４ａとの密着性を考慮すれば、ポリフッ化ビニリデン樹脂（ＰＶＤＦのＴｇは−３９℃）がより好ましい。また、耐白化性の点で、内側層４ａの厚みに対して、最外層４ｂの厚みの比率を２０％以上４０％以下に設定することがより好ましい。本実施形態の化粧シート１０を金属板６に貼り合わせた後折り曲げた場合、最外層４ｂは内側層４ａよりも延びが大きいが、最外層４ｂのＴｇが低いため、白化の原因となる微細なクラックが発生し難くなる。
また、最外層４ｂの厚みと最外層４ｂの厚みとの比率を１０：９０から４０：６０の範囲に設定することが好ましい。これにより、不燃性を向上することができる。 (Outermost layer 4b)
The outermost layer 4b is a sheet-like layer made of a fluororesin. It does not specifically limit as a fluororesin, A well-known fluororesin can be used. For example, polyvinylidene fluoride (PVDF), tetrafluoroethylene resin (PTFE), tetrafluoroethylene perfluoroalkoxy vinyl ether copolymer (PFA), tetrafluoroethylene / hexafluoropropylene copolymer (FEP), polychloro Trifluoroethylene (PCTFE), tetrafluoroethylene / ethylene copolymer (ETFE), chlorotrifluoroethylene / ethylene copolymer (ECTFE), and polyvinyl fluoride (PVF) can be used. In particular, in consideration of bending whitening and adhesiveness with the inner layer 4a, polyvinylidene fluoride resin (Tg of PVDF is -39 ° C) is more preferable. In terms of whitening resistance, it is more preferable to set the ratio of the thickness of the outermost layer 4b to 20% or more and 40% or less with respect to the thickness of the inner layer 4a. When the decorative sheet 10 of the present embodiment is bonded to the metal plate 6 and then bent, the outermost layer 4b has a larger extension than the inner layer 4a, but the Tg of the outermost layer 4b is low, which causes fine whitening. Cracks are less likely to occur.
Moreover, it is preferable to set the ratio of the thickness of the outermost layer 4b and the thickness of the outermost layer 4b in the range of 10:90 to 40:60. Thereby, nonflammability can be improved.

（接着剤層５）
接着剤層５は、接着剤からなるシート状の層である。接着剤としては、特に限定されず、既知の接着剤を用いることができる。例えば、ポリアミド樹脂、アクリル樹脂、酢酸ビニル樹脂等の熱可塑性樹脂、熱硬化性ウレタン樹脂等の硬化性樹脂を使用することができる。また、例えば、イソシアネートを硬化剤とする２液硬化型ウレタン樹脂やポリエステル樹脂等であってもよい。 (Adhesive layer 5)
The adhesive layer 5 is a sheet-like layer made of an adhesive. It does not specifically limit as an adhesive agent, A well-known adhesive agent can be used. For example, a thermoplastic resin such as a polyamide resin, an acrylic resin, or a vinyl acetate resin, or a curable resin such as a thermosetting urethane resin can be used. Further, for example, a two-component curable urethane resin or polyester resin using isocyanate as a curing agent may be used.

（金属板６）
金属板６は、金属からなる板状の部材である。金属としては、特に限定されず、既知の金属を用いることができる。例えば、アルミ、鋼、ステンレスを使用することができる。
（その他の構成）
化粧シート１０の表面に凹凸模様を付加してもよい。凹凸模様の形成方法としては、例えば、熱エンボス加工等がある。これにより、金属化粧板２０の意匠性を向上できる。 (Metal plate 6)
The metal plate 6 is a plate-like member made of metal. The metal is not particularly limited, and a known metal can be used. For example, aluminum, steel, and stainless steel can be used.
(Other configurations)
An uneven pattern may be added to the surface of the decorative sheet 10. Examples of the method for forming the uneven pattern include hot embossing. Thereby, the designability of the metal decorative board 20 can be improved.

（本実施形態の効果）
本実施形態に係る発明は、以下の効果を奏する。
（１）本実施形態に係る化粧シート１０は、基材層１上に、絵柄模様層２、及び２層以上の透明熱可塑性樹脂層４をこの順に積層し、透明熱可塑性樹脂層４の最外層４ｂがフッ素樹脂からなり、透明熱可塑性樹脂層４の最外層４ｂ以外の層である内側層４ａが、アクリル樹脂とアクリル樹脂系ゴムとの混合物からなり、その混合比率が、アクリル樹脂が４０質量％以上７０質量％以下であり、アクリル樹脂系ゴムが３０質量％以上６０質量％以下であり、透明熱可塑性樹脂層４の最外層４ｂの厚みとその内側層４ａの厚みとの比率が１０：９０から４０：６０の範囲であり、基材層１が、ポリオレフィン系樹脂からなり、基材層１の厚みが３０μｍ以上７０μｍ以下であり、化粧シート１０の総厚みが８０μｍ以上１３０μｍ以下であり、不燃性を有する。 (Effect of this embodiment)
The invention according to this embodiment has the following effects.
(1) The decorative sheet 10 according to the present embodiment has a pattern layer 2 and two or more transparent thermoplastic resin layers 4 laminated in this order on the base material layer 1 to form the outermost layer of the transparent thermoplastic resin layer 4. The outer layer 4b is made of a fluororesin, the inner layer 4a which is a layer other than the outermost layer 4b of the transparent thermoplastic resin layer 4 is made of a mixture of an acrylic resin and an acrylic resin rubber, and the mixing ratio is 40% for the acrylic resin. The acrylic resin rubber is 30% by mass or more and 60% by mass or less, and the ratio of the thickness of the outermost layer 4b of the transparent thermoplastic resin layer 4 to the thickness of the inner layer 4a is 10%. : 90 to 40:60, the base material layer 1 is made of polyolefin resin, the thickness of the base material layer 1 is 30 μm or more and 70 μm or less, and the total thickness of the decorative sheet 10 is 80 μm or more and 130 μm or less. Incombustible Having.

このような構成によれば、基材層１にアクリル樹脂及びアクリル樹脂系ゴムの混合物からなる層（内側層４ａ）と、フッ素樹脂からなる層（最外層４ｂ）とを積層したため、耐候性、耐汚染性、加工性、及び不燃性を有する。また、基材層１をポリオレフィン系樹脂としたため、廃棄時にダイオキシンが発生することを防止できる。これにより、本実施形態によれば、耐候性、耐汚染性、加工性、及び不燃性を有し、廃棄時にダイオキシンが発生することを防止できる化粧シート１０を提供することができる。   According to such a configuration, since the layer (inner layer 4a) made of a mixture of acrylic resin and acrylic resin rubber and the layer made of fluororesin (outermost layer 4b) are laminated on the base material layer 1, weather resistance, It has stain resistance, processability, and nonflammability. Moreover, since the base material layer 1 is made of polyolefin resin, it is possible to prevent dioxins from being generated at the time of disposal. Thereby, according to this embodiment, it can provide the decorative sheet 10 which has a weather resistance, stain resistance, workability, and nonflammability and can prevent generation | occurrence | production of dioxin at the time of disposal.

また、内側層４ａのアクリル樹脂を４０質量％以上７０質量％以下、アクリル樹脂系ゴムを３０質量％以上６０質量％以下とし、最外層４ｂの厚みと内側層４ａの厚みとの比率を１０：９０から４０：６０の範囲としたため、不燃性、加工性、及び耐候性をともに良好にすることができる。   Further, the acrylic resin of the inner layer 4a is 40% by mass or more and 70% by mass or less, the acrylic resin rubber is 30% by mass or more and 60% by mass or less, and the ratio of the thickness of the outermost layer 4b to the thickness of the inner layer 4a is 10: Since it is in the range of 90 to 40:60, both nonflammability, workability, and weather resistance can be improved.

（２）本実施形態に係る化粧シート１０は、フッ素樹脂が、ポリフッ化ビニリデン樹脂であり、基材層１が、有機顔料及び無機顔料の少なくともいずれかが混合されて着色されている着色ポリプロピレン樹脂である。
このような構成によれば、ポリフッ化ビニリデン樹脂を使用することで、折り曲げ白化性、内側層４ａとの密着性をより良好なものとすることができる。 (2) The decorative sheet 10 according to the present embodiment is a colored polypropylene resin in which the fluororesin is a polyvinylidene fluoride resin and the base material layer 1 is colored by mixing at least one of an organic pigment and an inorganic pigment. It is.
According to such a configuration, by using the polyvinylidene fluoride resin, the folding whitening property and the adhesion with the inner layer 4a can be further improved.

（３）本実施形態に係る金属化粧板２０は、本実施形態に係る化粧シート１０を金属板６に貼りあわせてなる。
このような構成によれば、耐候性、耐汚染性、及び耐溶剤性を有するとともに、不燃性、加工性、及び耐候性をともに良好にすることが可能な金属化粧板２０を提供できる。
（４）本実施形態に係る金属化粧板２０は、化粧シート表面に凹凸模様を有する。
このような構成によれば、金属化粧板２０の意匠性を向上できる。 (3) The decorative metal plate 20 according to the present embodiment is formed by bonding the decorative sheet 10 according to the present embodiment to the metal plate 6.
According to such a configuration, it is possible to provide the metal decorative board 20 that has weather resistance, contamination resistance, and solvent resistance, and that can improve both nonflammability, workability, and weather resistance.
(4) The metal decorative board 20 according to the present embodiment has an uneven pattern on the decorative sheet surface.
According to such a structure, the designability of the metal decorative board 20 can be improved.

次に、本発明に基づく実施例について説明する。
（実施例１）
実施例１では、ポリオレフィン系樹脂である着色ポリプロピレン樹脂を使用して基材層１を設けた。基材層１の厚みは７０μｍとした。基材層１の表面及び裏面のそれぞれにコロナ放電処理を施した後、基材層１の表面に、ウレタン系印刷インキでグラビア印刷により木目柄を印刷して絵柄模様層２を設けた。その後、基材層１の裏面に、裏面プライマー層用塗工液でグラビア印刷により裏面プライマー層を設けた。裏面プライマー層用塗工液の組成は、２液硬化型ポリエステルウレタン（ポリエステルポリオールとポリイソシアネートを１００：５（質量比）の割合で混合）：１００質量部、希釈溶剤（酢酸エチルとメチルイソブチルケトンの１：１（質量比）の割合で混合した混合溶剤）：２０質量部となっている。裏面プライマー層の厚みは１μｍとした。 Next, examples according to the present invention will be described.
Example 1
In Example 1, the base material layer 1 was provided using the colored polypropylene resin which is a polyolefin resin. The thickness of the base material layer 1 was 70 μm. After performing the corona discharge treatment on each of the front surface and the back surface of the base material layer 1, the pattern pattern layer 2 was provided on the front surface of the base material layer 1 by printing a wood grain pattern by gravure printing with urethane printing ink. Then, the back surface primer layer was provided in the back surface of the base material layer 1 by the gravure printing with the coating liquid for back surface primer layers. The composition of the backside primer layer coating solution is a two-component curable polyester urethane (mixed in a ratio of 100: 5 (mass ratio) of polyester polyol and polyisocyanate): 100 parts by mass, diluent solvent (ethyl acetate and methyl isobutyl ketone) The mixed solvent mixed at a ratio of 1: 1 (mass ratio): 20 parts by mass. The thickness of the back primer layer was 1 μm.

続いて、ポリフッ化ビニリデン樹脂と内側層形成用混合物とをＴダイにより溶融して押し出し、最外層４ｂと内側層４ａとからなる積層体を設けた。内側層形成用混合物の組成は、アクリル樹脂（構成単位：メタクリル酸メチル、ＰＭＭＡ系樹脂）：２０質量部、アクリルゴム（「ＳＡ−ＦＷ００１（商品名）」、株式会社クラレ製、メタクリル樹脂、構成単位：メタクリル酸メチル、粒子状、平均粒子径：１００ｎｍ、ＰＭＭＡ系樹脂ゴム）：８０質量部となっている。内側層４ａは、アクリル樹脂（ＰＭＭＡ系樹脂）とアクリル樹脂系ゴム（ＰＭＭＡ系樹脂ゴム）との質量比を４０：６０とした。上記積層体は最外層４ｂの厚みを５μｍ、内側層４ａの厚みを４５μｍ、総厚を５０μｍ、最外層４ｂの厚み：内側層４ａの厚み＝１０：９０とした。化粧シート１０の総厚みは１２０μｍとした。   Subsequently, the polyvinylidene fluoride resin and the inner layer forming mixture were melted and extruded by a T die to provide a laminate composed of the outermost layer 4b and the inner layer 4a. The composition of the inner layer forming mixture is acrylic resin (constituent unit: methyl methacrylate, PMMA resin): 20 parts by mass, acrylic rubber ("SA-FW001 (trade name)", manufactured by Kuraray Co., Ltd., methacrylic resin, constitution Unit: methyl methacrylate, particulate, average particle size: 100 nm, PMMA resin rubber): 80 parts by mass. The inner layer 4a had a mass ratio of 40:60 between the acrylic resin (PMMA resin) and the acrylic resin rubber (PMMA resin rubber). In the laminate, the thickness of the outermost layer 4b was 5 μm, the thickness of the inner layer 4a was 45 μm, the total thickness was 50 μm, the thickness of the outermost layer 4b: the thickness of the inner layer 4a = 10: 90. The total thickness of the decorative sheet 10 was 120 μm.

続いて、絵柄模様層２の上に、ヒートシール剤（アクリル樹脂：ポリエステル樹脂：塩化酢酸ビニル＝１：１：１、イソシアネート系硬化剤配合）を塗布して透明接着剤層３（乾燥状態での厚さ：１μｍ）を形成した上に、上記形成した積層体を重ね合わせ、フィルム表面温度１２０℃の条件で熱ラミネートし、さらに上記積層体に、シート表面温度１２０℃の条件で木目導管溝柄のエンボスを施し、化粧シート１０を設けた。その後、化粧シート１０に２液硬化性ウレタン系接着剤（乾燥状態での塗布量２５ｇ／ｍ2）で接着剤層５を形成した上に接着剤層５を介して金属板６を貼り合わせて、金属化粧板２０を得た。金属板６としてはアルミ板を用いた。金属板６の厚みは１ｍｍとした。 Subsequently, a heat sealant (acrylic resin: polyester resin: vinyl chloride = 1: 1: 1, isocyanate curing agent blended) was applied on the pattern layer 2 and the transparent adhesive layer 3 (in a dry state) 1 μm) is formed, and the formed laminate is superposed and thermally laminated under the condition of a film surface temperature of 120 ° C., and further the wood grain conduit groove is formed on the laminate under the condition of a sheet surface temperature of 120 ° C. A decorative sheet 10 was provided by embossing a handle. Thereafter, the adhesive layer 5 was formed on the decorative sheet 10 with a two-component curable urethane-based adhesive (a coating amount in a dry state of 25 g / m 2 ), and then the metal plate 6 was bonded through the adhesive layer 5. The metal decorative board 20 was obtained. An aluminum plate was used as the metal plate 6. The thickness of the metal plate 6 was 1 mm.

（実施例２）
最外層４ｂの厚さを２０μｍ、内側層４ａの厚さを３０μｍ、つまり、最外層４ｂの厚さ：内側層４ａの厚さ＝４０：６０に調整した。それ以外は、実施例１と同様の手順により、実施例２の化粧シート１０を作製した。
（実施例３）
内側層４ａのアクリル樹脂とアクリル樹脂系ゴムとの質量比を７０：３０に調整した。それ以外は、実施例１と同様の手順により、実施例３の化粧シート１０を作製した。 (Example 2)
The thickness of the outermost layer 4b was adjusted to 20 μm, the thickness of the inner layer 4a was adjusted to 30 μm, that is, the thickness of the outermost layer 4b: the thickness of the inner layer 4a = 40: 60. Otherwise, the decorative sheet 10 of Example 2 was produced by the same procedure as that of Example 1.
(Example 3)
The mass ratio of the acrylic resin and the acrylic resin rubber of the inner layer 4a was adjusted to 70:30. Otherwise, the decorative sheet 10 of Example 3 was produced by the same procedure as in Example 1.

（実施例４）
最外層４ｂの厚さを２０μｍ、内側層４ａの厚さを３０μｍ、つまり、最外層４ｂの厚さ：内側層４ａの厚さ＝４０：６０に調整した。それ以外は、実施例３と同様の手順により、実施例４の化粧シート１０を作製した。
（実施例５）
基材層１の厚みを３０μｍに調整した。それ以外は、実施例１と同様の手順により、実施例４の化粧シート１０を作製した。 Example 4
The thickness of the outermost layer 4b was adjusted to 20 μm, the thickness of the inner layer 4a was adjusted to 30 μm, that is, the thickness of the outermost layer 4b: the thickness of the inner layer 4a = 40: 60. Otherwise, the decorative sheet 10 of Example 4 was produced by the same procedure as in Example 3.
(Example 5)
The thickness of the base material layer 1 was adjusted to 30 μm. Otherwise, the decorative sheet 10 of Example 4 was produced by the same procedure as in Example 1.

（比較例１）
基材層１の厚みを９０μｍに調整した。それ以外は、実施例１と同様の手順により、比較例１の化粧シート１０を作製した。
（比較例２）
基材層１の厚みを２０μｍに調整した。それ以外は、実施例１と同様の手順により、比較例２の化粧シート１０を作製した。 (Comparative Example 1)
The thickness of the base material layer 1 was adjusted to 90 μm. Otherwise, the decorative sheet 10 of Comparative Example 1 was produced by the same procedure as in Example 1.
(Comparative Example 2)
The thickness of the base material layer 1 was adjusted to 20 μm. Otherwise, the decorative sheet 10 of Comparative Example 2 was produced by the same procedure as in Example 1.

（比較例３）
基材層１を着色ポリエチレン樹脂で形成した。それ以外は、実施例１と同様の手順により、比較例３の化粧シート１０を作製した。
（比較例４）
最外層４ｂの厚さを１０μｍ、内側層４ａの厚さを４０μｍ、つまり、最外層４ｂの厚さ：内側層４ａの厚さ＝２０：８０に調整した。また、内側層４ａのアクリル樹脂とアクリル樹脂系ゴムとの質量比を２０：８０に調整した。それ以外は、実施例１と同様の手順により、比較例４の化粧シート１０を作製した。 (Comparative Example 3)
The base material layer 1 was formed with a colored polyethylene resin. Otherwise, the decorative sheet 10 of Comparative Example 3 was produced by the same procedure as in Example 1.
(Comparative Example 4)
The thickness of the outermost layer 4b was adjusted to 10 μm, and the thickness of the inner layer 4a was adjusted to 40 μm, that is, the thickness of the outermost layer 4b: the thickness of the inner layer 4a = 20: 80. Moreover, the mass ratio of the acrylic resin and the acrylic resin rubber of the inner layer 4a was adjusted to 20:80. Otherwise, the decorative sheet 10 of Comparative Example 4 was produced by the same procedure as in Example 1.

（比較例５）
内側層４ａのアクリル樹脂とアクリル樹脂系ゴムとの質量比を８０：２０に調整した。それ以外は、比較例４と同様の手順により、比較例５の化粧シート１０を作製した。
（比較例６）
最外層４ｂの厚さを２μｍ、内側層４ａの厚さを４８μｍ、つまり、最外層４ｂの厚さ：内側層４ａの厚さ＝４：９６に調整した。また、内側層４ａのアクリル樹脂とアクリル樹脂系ゴムとの質量比を５０：５０に調整した。それ以外は、実施例１と同様の手順により、比較例６の化粧シート１０を作製した。 (Comparative Example 5)
The mass ratio of the acrylic resin and the acrylic resin rubber of the inner layer 4a was adjusted to 80:20. Otherwise, the decorative sheet 10 of Comparative Example 5 was produced by the same procedure as Comparative Example 4.
(Comparative Example 6)
The thickness of the outermost layer 4b was adjusted to 2 μm, and the thickness of the inner layer 4a was adjusted to 48 μm, that is, the thickness of the outermost layer 4b: the thickness of the inner layer 4a = 4: 96. Moreover, the mass ratio of the acrylic resin and the acrylic resin rubber of the inner layer 4a was adjusted to 50:50. Otherwise, the decorative sheet 10 of Comparative Example 6 was produced by the same procedure as in Example 1.

（比較例７）
最外層４ｂの厚さを２５μｍ、内側層４ａの厚さを２５μｍ、つまり、最外層４ｂの厚さ：内側層４ａの厚さ＝５０：５０に調整した。それ以外は、比較例６と同様の手順により、比較例７の化粧シート１０を作製した。
（評価判定）
以上の各実施例及び各比較例の化粧シート１０について、次の評価を実施した。 (Comparative Example 7)
The thickness of the outermost layer 4b was adjusted to 25 μm, the thickness of the inner layer 4a was adjusted to 25 μm, that is, the thickness of the outermost layer 4b: the thickness of the inner layer 4a = 50: 50. Otherwise, the decorative sheet 10 of Comparative Example 7 was produced by the same procedure as Comparative Example 6.
(Evaluation judgment)
The following evaluation was implemented about the decorative sheet 10 of each above Example and each comparative example.

（不燃性）
不燃性を次のようにして評価した。
ＩＳＯ５６６０−１に準拠し、建築基準法第２条第９号及び建築基準法施工令第１０８条の２に基づく防耐火試験方法と性能評価規格に従うコーンカロリーメーター試験機による発熱性試験を実施した。そして、加熱開始後２０分間の総発熱量（ＭＪ／ｍ２）が８ＭＪ／ｍ２以下であり、加熱開始後２０分間の最大発熱速度として、１０秒以上継続して２００ｋＷ／ｍ２を超えなければ、合格「○」とした。ただし、基材の亀裂も評価し、基材に亀裂や穴のないことも条件とした。 (Non Flammable)
Nonflammability was evaluated as follows.
In accordance with ISO 5660-1, fire resistance test using a cone calorimeter tester according to the fire prevention test method and performance evaluation standards based on Article 2-9 of the Building Standards Act and Article 108-2 of the Building Standards Act Construction Order was conducted. . The gross calorific value of the heating starting after 20 min (MJ / m 2) is at 8 MJ / m 2 or less, the maximum heat release rate of the start of heating after 20 minutes, not exceed 200 kW / m 2 to continue for 10 seconds or more In this case, it was determined to pass “◯”. However, the base material was also evaluated for cracks, and the base material had no cracks or holes.

（ラッピング適正（加工性））
ラッピング適正、つまり、加工性を次のようにして評価した。
ラッピング加工（プロファイル加工）を実施した。そして、ラッピング加工の直後、化粧シート１０の応力によるシート剥がれのないものを、合格「○」とした。 (Appropriate lapping (workability))
Lapping suitability, that is, workability was evaluated as follows.
Lapping processing (profile processing) was performed. Then, immediately after the lapping process, a sheet that did not peel off due to the stress of the decorative sheet 10 was determined to be acceptable.

（耐候性）
耐候性を次のようにして評価した。
メタルウェザーを用いて、耐候性を次のようにして評価した。
下記条件の照射モードを２０時間実施した後、下記条件の結露モードで結露状態を４時間実施することを、１サイクル（２４時間）として、３１２時間実施した。
・照射モード：照度６５ｍＷ／ｃｍ２（ウシオ製ユニメーター ＵＩＴ−１０１にて測定），ＢＰ温度 ５３℃，湿度５０％，２０時間照射
・結露モード：３０℃，９８％，４時間（結露モードの前後３０秒シャワー噴霧）
上記条件で３１２時間の試験を実施した後、目視確認にて外観の退色具合及び剥離を確認した。そして、著しい変退色又は剥離の無い場合は、合格「○」とした。
評価結果を表１〜表３に示す。 (Weatherability)
The weather resistance was evaluated as follows.
The weather resistance was evaluated as follows using a metal weather.
After performing the irradiation mode of the following conditions for 20 hours, performing the condensation state for 4 hours in the condensation mode of the following conditions was performed for 312 hours as one cycle (24 hours).
・ Irradiation mode: Illuminance 65mW / cm2 (measured with Ushio Unimeter UIT-101), BP temperature 53 ° C, humidity 50%, 20 hours ・ Condensation mode: 30 ° C, 98%, 4 hours (before and after condensation mode) 30 seconds shower spray)
After conducting the test for 312 hours under the above conditions, the appearance fading and peeling were confirmed by visual confirmation. And when there was no remarkable discoloration or peeling, it was set as the pass "(circle)".
The evaluation results are shown in Tables 1 to 3.

Figure 2016147387
Figure 2016147387

Figure 2016147387
Figure 2016147387

Figure 2016147387
Figure 2016147387

表１〜表３から、実施例１〜実施例５に代表されるように、アクリル樹脂が４０質量％以上７０質量％以下であり、アクリル樹脂系ゴムが３０質量％以上６０質量％以下であり、最外層４ｂの厚みと内側層４ａの厚みとの比率が１０：９０から４０：６０の範囲であり、さらに、基材層１の厚みが３０μｍ以上７０μｍ以下であり、化粧シート１０の総厚みが８０μｍ以上１３０μｍ以下であり、本発明の範囲を満足する場合には、不燃性、ラッピング適正（加工性）、及び耐候性がともに良好であることが分かった。ここで、実施例１において、アクリル樹脂が４０質量％以上７０質量％以下とし、アクリル樹脂系ゴムが３０質量％以上６０質量％以下とし、フッ素樹脂層５の厚みと耐候性樹脂層４の厚みとの比率が１０：９０から４０：６０の範囲とし、基材層１の厚みが３０μｍ以上７０μｍ以下とし、化粧シート１０の総厚みが８０μｍ以上１３０μｍ以下として、本発明の範囲で調整して実施してみたところ、実施例１〜５と同様な効果を得た。   From Table 1 to Table 3, as represented by Examples 1 to 5, the acrylic resin is 40% by mass or more and 70% by mass or less, and the acrylic resin rubber is 30% by mass or more and 60% by mass or less. The ratio of the thickness of the outermost layer 4b to the thickness of the inner layer 4a is in the range of 10:90 to 40:60, and the thickness of the base material layer 1 is 30 μm or more and 70 μm or less, and the total thickness of the decorative sheet 10 Was 80 μm or more and 130 μm or less, and when the range of the present invention was satisfied, it was found that both nonflammability, wrapping suitability (workability), and weather resistance were good. Here, in Example 1, the acrylic resin is 40% by mass or more and 70% by mass or less, the acrylic resin rubber is 30% by mass or more and 60% by mass or less, the thickness of the fluororesin layer 5 and the thickness of the weather resistant resin layer 4 The ratio is 10:90 to 40:60, the thickness of the base layer 1 is 30 μm or more and 70 μm or less, and the total thickness of the decorative sheet 10 is 80 μm or more and 130 μm or less. As a result, the same effects as in Examples 1 to 5 were obtained.

なお、比較例１に代表されるように、基材層１の厚みが７０μｍ（上限値）より大きく、化粧シート１０の総厚みが１４０μｍ（上限値）より大きい場合には、不燃性が不合格「×」となった。また、比較例２に代表されるように、基材層１の厚みが３０μｍ（下限値）より小さく、化粧シート１０の総厚みが７０μｍ（下限値）より小さい場合には、ラッピング適正（加工性）が不合格「×」となった。さらに、比較例３に代表されるように、基材層１の厚みが３０μｍ（下限値）より小さく、化粧シート１０の総厚みが７０μｍ（下限値）より小さい場合には、ラッピング適正（加工性）が不合格「×」となった。   In addition, as represented by Comparative Example 1, when the thickness of the base material layer 1 is larger than 70 μm (upper limit) and the total thickness of the decorative sheet 10 is larger than 140 μm (upper limit), the nonflammability is rejected. It became “x”. Moreover, as represented by Comparative Example 2, when the thickness of the base material layer 1 is smaller than 30 μm (lower limit) and the total thickness of the decorative sheet 10 is smaller than 70 μm (lower limit), lapping is appropriate (workability). ) Was rejected as “x”. Further, as typified by Comparative Example 3, when the thickness of the base material layer 1 is smaller than 30 μm (lower limit) and the total thickness of the decorative sheet 10 is smaller than 70 μm (lower limit), lapping is appropriate (workability). ) Was rejected as “x”.

また、比較例４に代表されるように、アクリル樹脂が４０質量％（下限値）より小さく、アクリル樹脂系ゴムが６０質量％（上限値）より大きい場合には、耐候性が不合格「×」となった。また、比較例５に代表されるように、アクリル樹脂が７０質量％（上限値）より大きく、アクリル樹脂系ゴムが３０質量％（下限値）より小さい場合には、加工性が不合格「×」となった。また、比較例６に代表されるように、最外層４ｂの厚みと内側層４ａの厚みとの比率が１０：９０から４０：６０の範囲から外れている場合には（４：９６）、不燃性が不合格「×」となった。また、比較例７に代表されるように、最外層４ｂの厚みと内側層４ａの厚みとの比率が１０：９０から４０：６０の範囲から外れている場合には（５０：５０）、加工性が不合格「×」となった。   Moreover, as represented by Comparative Example 4, when the acrylic resin is smaller than 40% by mass (lower limit) and the acrylic resin rubber is larger than 60% by mass (upper limit), the weather resistance is rejected. " Moreover, as represented by Comparative Example 5, when the acrylic resin is larger than 70% by mass (upper limit) and the acrylic resin rubber is smaller than 30% by mass (lower limit), the workability is rejected. " Further, as represented by Comparative Example 6, when the ratio of the thickness of the outermost layer 4b and the thickness of the inner layer 4a is out of the range of 10:90 to 40:60 (4:96), nonflammability Sex was rejected “x”. Further, as represented by Comparative Example 7, when the ratio of the thickness of the outermost layer 4b and the thickness of the inner layer 4a is out of the range of 10:90 to 40:60 (50:50), the processing Sex was rejected “x”.

１ 基材層
２ 絵柄模様層
３ 透明接着剤層
４ 基材層
４ａ 内側層
４ｂ 最外層
５ 接着剤層
６ 金属板
１０ 化粧シート
２０ 金属化粧板 DESCRIPTION OF SYMBOLS 1 Base material layer 2 Picture pattern layer 3 Transparent adhesive layer 4 Base material layer 4a Inner layer 4b Outermost layer 5 Adhesive layer 6 Metal plate 10 Decorative sheet 20 Metal decorative plate

Claims (4)

基材層上に、絵柄模様層、及び２層以上の透明熱可塑性樹脂層をこの順に積層し、
前記透明熱可塑性樹脂層の最外層がフッ素樹脂からなり、
前記透明熱可塑性樹脂層の最外層以外の層である内側層は、アクリル樹脂とアクリル樹脂系ゴムとの混合物からなり、その混合比率は、アクリル樹脂が４０質量％以上７０質量％以下であり、アクリル樹脂系ゴムが３０質量％以上６０質量％以下であり、
前記透明熱可塑性樹脂層の最外層の厚みとその内側層の厚みとの比率が１０：９０から４０：６０の範囲であり、
前記基材層は、ポリオレフィン系樹脂からなり、
前記基材層の厚みが３０μｍ以上７０μｍ以下であり、
化粧シートの総厚みが８０μｍ以上１３０μｍ以下であり、
不燃性を有することを特徴とする化粧シート。 On the base material layer, a pattern layer and two or more transparent thermoplastic resin layers are laminated in this order,
The outermost layer of the transparent thermoplastic resin layer is made of a fluororesin,
The inner layer which is a layer other than the outermost layer of the transparent thermoplastic resin layer is composed of a mixture of an acrylic resin and an acrylic resin rubber, and the mixing ratio thereof is 40% by mass or more and 70% by mass or less of the acrylic resin. The acrylic resin rubber is 30% by mass or more and 60% by mass or less,
The ratio of the thickness of the outermost layer of the transparent thermoplastic resin layer to the thickness of the inner layer is in the range of 10:90 to 40:60,
The base material layer is made of a polyolefin resin,
The thickness of the base material layer is 30 μm or more and 70 μm or less,
The total thickness of the decorative sheet is 80 μm or more and 130 μm or less,
A decorative sheet having nonflammability. 前記フッ素樹脂は、ポリフッ化ビニリデン樹脂であり、
前記基材層が、有機顔料及び無機顔料の少なくともいずれかが混合されて着色されている着色ポリプロピレン樹脂であることを特徴とする請求項１に記載の化粧シート。 The fluororesin is a polyvinylidene fluoride resin,
The decorative sheet according to claim 1, wherein the base material layer is a colored polypropylene resin colored by mixing at least one of an organic pigment and an inorganic pigment. 請求項１または２に記載の化粧シートを金属板に貼りあわせてなることを特徴とする金属化粧板。   A decorative metal sheet comprising the decorative sheet according to claim 1 or 2 attached to a metal sheet. 前記化粧シート表面に凹凸模様を有することを特徴とする請求項３に記載の金属化粧板。   The metal decorative board according to claim 3, wherein the decorative sheet surface has an uneven pattern.
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JP2018130926A (en) * 2017-02-17 2018-08-23 凸版印刷株式会社 Decorative sheet and decorative member
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JP7268309B2 (en) 2018-09-04 2023-05-08 凸版印刷株式会社 Decorative sheet and decorative member
JP7404761B2 (en) 2019-10-18 2023-12-26 Ｔｏｐｐａｎホールディングス株式会社 How to repair decorative parts

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