JP3629964B2 - Cosmetic material - Google Patents

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JP3629964B2
JP3629964B2 JP21443298A JP21443298A JP3629964B2 JP 3629964 B2 JP3629964 B2 JP 3629964B2 JP 21443298 A JP21443298 A JP 21443298A JP 21443298 A JP21443298 A JP 21443298A JP 3629964 B2 JP3629964 B2 JP 3629964B2
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gloss
pattern
concave
convex
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JP2000043223A (en
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浩昌 戸賀崎
信尚 柳下
和也 益子
英明 森
四男 乗峰
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Toppan Inc
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Toppan Inc
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【0001】
【発明の属する技術分野】
本発明は、建築物の内外装や建具、家具等の表面化粧等に使用するための化粧材に関する。さらに詳しくは、表面の艶の差により凹凸を立体的に表現した化粧材に関する。
【0002】
【従来の技術】
従来より、建築物の内外装や建具、家具等の表面化粧等に使用するための化粧材には、例えば木目柄等の所望の柄模様が施されるのが通例である。そして、単に木目柄等を平面的に表現するのみならず、天然の木材が持つ導管等の表面の凹凸を併せて立体的に表現した化粧材も、高級感が所望される用途を中心に、広く用いられている。
【0003】
化粧材の表面に、平面的な木目柄と併せて立体的な凹凸感を表現する手法としては、従来より種々の方法が考案され、目的に応じて使い分けられている。その代表的な手法としては、例えば以下に列挙する様なものがある。
【0004】
(1)化粧材用素材の表面上に、賦与しようとする凹凸形状を反転した凹凸形状を有するエンボス版又はエンボスロール、エンボス賦形フィルム等を圧着し、その凹凸形状に沿って化粧材用素材を変形させることにより、機械的に凹凸形状を賦与する方法(特公昭47−18559号)。凹凸形状の再現性の点で最も優れており、化粧材への凹凸賦与手法としては主流であると言えよう。なお、既に成形済の化粧材用素材の表面に適用する方法の他、未硬化状態で流動性を有する硬化性の化粧材用素材の表面にエンボス版等を圧着し、賦形と同時又は賦形後に硬化させる方法もある(特開昭51−558号、特公昭51−44790号)。
【0005】
(2)化粧材用素材の表面に電離放射線硬化性樹脂層を形成し、これにマスクフィルム等を介して部分的に電離放射線を照射し、非照射部分の未硬化の電離放射線硬化性樹脂を後に除去するか、又は、硬化収縮現象を利用して凹部を形成する方法(特公昭51−40096号、特開昭48−4602号)。
【0006】
(3)化粧材用素材の表面に施した硬化性樹脂の表面又は底面に、硬化抑制剤又は硬化促進剤を含有するインキにて絵柄模様を施し、次いで前記硬化性樹脂を硬化させ、硬化速度差によって未硬化のまま残った樹脂を後に除去するか、又は、硬化収縮現象を利用して凹部を形成する方法(特開昭53−120780号、特公昭46−36479号)。
【0007】
(4)加熱発泡性樹脂層の表面又は底面に、発泡促進剤又は発泡抑制剤を含有するインキにて絵柄模様を施し、これを加熱発泡させ、絵柄模様を賦与した部分と他の部分とで加熱発泡性樹脂層の発泡度を異ならせることにより、凹凸形状を形成する方法(特公昭43−15713号、特公昭43−28636号)。
【0008】
(5)化粧材用素材の表面上に、加熱発泡性インキを模様状に印刷し、加熱発泡させて凸部を形成する方法(特開昭58−92562号)。
【0009】
(6)化粧材用素材の表面上に、着色又は無着色の無溶剤又は高固形分のインキを、大版深のグラビア印刷版またはスクリーン印刷版等を使用して、厚く盛り上げて印刷する方法(特公昭50−14566号)。
【0010】
(7)化粧材用素材の表面に、シリコーン化合物又はフッ素化合物等の撥液性物質を添加したインキにて凹部となるべき部分の模様を施した後、当該インキによって撥かれる性質を有する塗工剤を全面に塗工し、該塗工剤を前記模様上で撥かせることによって、凹部を形成する方法(特公昭47−16629号)。
【0011】
上記した各種の方法はいずれも、表現したい凹凸形状を化粧材の表面に現実に形成させることによって、立体的な凹凸感を実現しようとするものであるが、実際にはいずれの手法も、実施上の制約が多い。例えば、(1)は化粧材用素材として使用可能な材質がエンボス適性(賦形性及び保持性)に優れた材質に限定されるし、高価なエンボス版やエンボス装置等が必要であり、絵柄模様と凹凸模様との同調も困難である。(2)〜(5)は特殊な樹脂や薬剤、設備等を必要とし、製造工程も煩雑で生産性が低い。
【0012】
(6)は高粘度のインキを使用するので、版詰まり等の問題がある他、繊細な絵柄の表現には不向きである。(7)は撥液剤という特殊な薬剤が必要である他、撥き残り等の欠陥も発生し易い。また、(6)及び(7)に共通する問題点として、凸部の面積比が大きい場合には凸部用のインキや塗料の使用量が非常に多くなることや、凹部の物性の向上が困難であること等を挙げることができる。
【0013】
その他、(1)〜(7)の手法に共通する問題点として、化粧材の表面に凹凸形状が存在する為に、特に木材の導管模様等の様に凹部の面積比が比較的に小さい場合には、化粧材の表面に付着した汚染物が凹部に溜まり易く、表面を拭いても凹部に溜まった汚染物が取れにくいという問題点もある。
【0014】
上記した各種の手法に対し、表現したい凹凸形状を化粧材の表面に現実に形成させる替わりに、凹部及び凸部として表現したい部分の表面の艶状態を異ならせることにより、人間の目の錯覚を利用して視覚的に凹凸の立体感を表現する手法もある。つまり、現実には凹凸形状は存在しなくても、人間の目には、相対的に艶の高い部分は凸部、艶の低い部分は凹部として認識されるのである。
【0015】
上記の手法は、具体的には例えば、凹み模様を含む適宜模様が印刷された基材の印刷面に全面に、艶の低い透明乃至半透明の合成樹脂塗料層を形成した後、該合成樹脂材層の表面の前記凹み模様に対応する部分を除く部分に、艶の高い透明乃至半透明の合成樹脂塗料層を形成することによって達成される(特公昭50−39115号)。勿論、艶の高低の関係を逆転させれば、凹凸の関係を逆転させた化粧材を得ることができる。
【0016】
この手法によれば、特殊な薬剤等を必要とすることなく、艶の異なる2種類の塗料を用意するだけで、如何なる基材に対しても、容易に立体的な凹凸感を賦与することができる。しかも、艶の異なる塗料層の形成は、絵柄模様の形成に引き続きグラビア印刷法等の慣用の印刷法で行うことができるので、特殊設備は一切不要で生産能率も高く、絵柄模様との同調も容易である。また、塗料層の厚みは、表現しようとする凹凸の高低差と比較すれば遥かに薄くて済むので、樹脂の使用量を節減できる他、可撓性の面でも有利であり、折り曲げ加工適性に優れた化粧材を容易に実現できる。また、化粧材の表面に余り大きな凹凸がないので、凹部に汚染物が溜まることもないという利点もある。
【0017】
係る多くの利点に鑑み、この手法を採用した化粧材は、既に大量に使用されているのではあるが、高級感の点ではまだ前記した各種の手法を凌ぐには至っていないのが実情である。その理由について考察するに、例えば(1)の機械エンボス法によれば、天然木の導管等の凹凸形状を、その断面形状まで含めて忠実に再現することが可能である。これに対し、艶の異なる2種類の塗料を使用したこの手法では、表面の艶の段階は2種類であるから、表現できる凹凸の段階も2種類である。従って、天然木の導管等の様に、深さ(高さ)が連続的に変化した斜面部のある凹凸形状を表現することができないという問題点があった。
【0018】
【発明が解決しようとする課題】
本発明は、このような問題点を解決するためになされたものであり、その課題とするところは、表面の艶状態の差によって凹凸形状を表現した化粧材において、天然木の導管等の様に、深さ(高さ)が連続的に変化した凹凸形状を表現した化粧材を得ることにある。
【0019】
【課題を解決するための手段】
本発明は上記課題を解決するために、基材に下地模様と凹部または凸部表現領域に対応する模様を設け、前記凹部または凸部表現領域に対応する模様が表面に露出しており、前記凹部または凸部表現領域に対応する模様に艶調整剤が添加され、前記凹部または凸部表現領域に対応する模様以外の部分の表面に前記凹部または凸部表現領域に対応する模様とは異なる艶を有する艶調整層が設けられてなる化粧材であって、前記艶調整層が、前記領域の輪郭の近傍において艶状態に段階的な階調を有することを特徴とする化粧材を提供する。または、基材に下地模様と凹部または凸部表現領域に対応する模様と第2艶調整層を設け、前記凹部または凸部表現領域に対応する模様以外の部分の表面に前記第2艶調整層とは異なる艶を有する艶調整層が設けられてなる化粧材であって、前記艶調整層が、前記領域の輪郭の近傍において艶状態に段階的な階調を有することを特徴とする化粧材を提供する。
【0020】
【発明の実施の形態】
図1に本発明により得られた化粧材の断面の一例を示す。この化粧材は、化粧材用基材1上に、下地模様31と、凹部又は凸部表現領域2に対応する模様32とから構成される絵柄3が形成され、凹部又は凸部表現領域2以外の部分の表面に、凹部又は凸部表現領域2の表面とは異なる艶を有する艶調整層4とが設けられて構成され、該艶調整層4には、凹部又は凸部表現領域2の輪郭の近傍において、艶状態に階調が設けられている。なお、本発明でいう「凹部又は凸部表現領域」とは、他の部分(艶調整層4が設けられる部分)との比較において凹部又は凸部として表現しようとする領域を意味する。
【0021】
基材1としては、従来公知の如く、目的とする用途に応じて種々の材料を使用することができる。具体的には、例えば薄葉紙、チタン紙、樹脂含浸紙、難燃紙、無機質紙等の紙類や、天然繊維又は合成繊維からなる織布又は不織布、ポリオレフィン系樹脂、ポリエステル系樹脂、アクリル系樹脂、スチレン系樹脂、ポリアミド系樹脂、繊維素系樹脂、ポリカーボネート樹脂、ポリ塩化ビニル樹脂、ポリ塩化ビニリデン樹脂、フッ素系樹脂等の合成樹脂系基材、木材単板、突板、合板、集成材、パーティクルボード、中密度繊維板等の木質系基材、石膏板、セメント板、珪酸カルシウム板、陶磁器板等の無機質系基材、鉄、銅、アルミニウム、ステンレス等の金属系基材等、又はそれらの複合体、積層体等、従来公知の任意の材料が使用可能であり、その形状も、例えばフィルム状乃至シート状、板状、異型成型体等、一切制限はない。
【0022】
絵柄3の構成材料にも特に制限はないが、一般的には、染料又は顔料等の着色剤を、適当な結着剤樹脂と共に、適当な溶剤中に溶解又は分散してなる印刷インキ又はコーティング材が使用される。
【0023】
前記着色剤としては、例えばカーボンブラック、チタン白、亜鉛華、弁柄、黄鉛、紺青、カドミウムレッド等の無機顔料や、アゾ顔料、レーキ顔料、アントラキノン顔料、フタロシアニン顔料、イソインドリノン顔料、ジオキサジン顔料等の有機顔料等、またはこれらの2種以上の混合物等を使用することができる。
【0024】
また、前記結着剤樹脂としては、例えばアクリル系樹脂、スチレン系樹脂、ポリエステル系樹脂、ウレタン系樹脂、ポリビニル系樹脂、アルキド樹脂、石油系樹脂、ケトン樹脂、エポキシ系樹脂、メラミン系樹脂、フッ素系樹脂、シリコーン系樹脂、繊維素系樹脂、ゴム系樹脂等の各種合成樹脂類、またはそれらの混合物、共重合体等を使用することができる。
【0025】
また、前記溶剤としては、例えばトルエン、キシレン、シクロヘキサン、酢酸エチル、酢酸ブチル、メチルアルコール、エチルアルコール、イソプロピルアルコール、アセトン、メチルエチルケトン、メチルイソブチルケトン、シクロヘキサノン、水等、又はそれらの混合物等を使用することができる。
【0026】
その他、必要に応じて体質顔料や可塑剤、分散剤、界面活性剤、粘着付与剤、接着助剤、乾燥剤、硬化剤、硬化促進剤又は硬化遅延剤等の各種添加剤等が適宜使用される。
【0027】
絵柄3は、凹部又は凸部表現領域2に対応する模様32を少なくとも含む必要がある。一方、下地模様31は必須ではないが、凹部又は凸部表現領域2以外の部分に表面の凹凸とは独立した色彩模様として視覚される意匠を付与する目的で設けることができる。例えば木目柄の場合には周知の様に、下地ベタ、木目模様、導管模様等に分版して印刷するのが普通であり、このうち下地ベタ及び木目模様は、本発明の化粧材においては下地模様31として設けられ、導管模様は、凹部又は凸部表現領域2に対応する模様32として設けられる。勿論、本発明において絵柄3は木目柄に限定されるものではなく、石目柄、抽象柄等にも適宜適用可能である。
【0028】
なお、図1には、凹部又は凸部表現領域2に対応する模様32は、下地模様31の表面上に設けられている様に記載されているが、これは必ずしも両者の上下関係を規定するものではなく、両者は同一面上に連続した絵柄として設けられていても良ければ、上下関係が逆転していても良いし、両者の間に透明層(透明な基材1であっても良い)等が介在していても良い。また、絵柄3の全部又は一部は、基材1中に着色剤を混合又は浸透させることによって基材1と一体化したものであっても良い。要するに、化粧材の表面側から観察した際に、凹部又は凸部表現領域2に対応する模様32と下地模様31とが、色彩的に識別できる様に構成されていれば良い。
【0029】
また、凹部又は凸部表現領域2に対応する模様32の輪郭は、当該領域2の輪郭と正確に一致している必要性は必ずしもなく、当該領域2の輪郭よりも多少内側又は外側にずれていても良い。寧ろ、両者の輪郭を積極的に僅かにずらすことによって、見掛け上の凹凸感を適宜調整することもできる。また、当該領域2内の場所によって両者の輪郭のずれの方向や距離を変化させることによって、見掛け上の凹凸感に場所による変化を与えることもできる。
【0030】
絵柄3の形成方法は、例えばグラビア印刷法やオフセット印刷法、スクリーン印刷法、静電印刷法、インクジェット印刷法等の適宜の印刷方法によるのが最も一般的であるが、これに限定されるものではなく、例えば前述した下地ベタはロールコート法やナイフコート法、ダイコート法等のコーティング方法によっても良いし、その他の模様も、従来公知の任意の画像形成方法によって形成することができる。
【0031】
艶調整層4の構成材料としては、前述した絵柄3の構成材料として挙げたものと同様の印刷インキ又はコーティング剤等を使用することができる。但し、艶調整層4は、少なくとも絵柄3を透視可能な透明性を備えている必要があるので、これを形成する印刷インキ又はコーティング剤等としては、染料又は顔料等の着色剤を全く含有しないか、必要とされる透明性を損なわない程度に少量のみ含有するものを使用する必要がある。また、艶調整層4は、化粧材の最表面層を構成するものであるから、化粧材として必要な耐磨耗性や耐擦傷性、耐溶剤性、耐汚染性等の表面物性を有するべく、硬化性樹脂を主成分とする材料から構成することが好ましい。具体的には、例えばメラミン系樹脂、エポキシ系樹脂、アミノアルキド系樹脂、ウレタン系樹脂、ポリエステル系樹脂、シリコーン系樹脂等の熱硬化性樹脂や、アクリル系樹脂等の電離放射線硬化性樹脂等を、好適に使用することができる。
【0032】
また、艶調整層4は、凹部又は凸部表現領域2の表面とは艶を異ならせる必要がある。具体的には、凹部又は凸部表現領域2を凹部として表現しようとする場合には、凹部又は凸部表現領域2の表面よりも艶を高く設計し、逆に、凹部又は凸部表現領域2を凸部として表現しようとする場合には、凹部又は凸部表現領域2の表面よりも艶を低く設計する必要がある。艶調整層4の艶状態を適宜調整する為に、例えばシリカ、アルミナ、炭酸カルシウム、硫酸バリウム等の艶調整剤を適宜添加することができる。
【0033】
そして、本発明においては、艶状態の変化により連続的な深さ(高さ)の変化を表現する目的で、凹部又は凸部表現領域2の輪郭の近傍において、艶調整層4の艶状態に階調を設けることを特徴としている。すなわち、凹部又は凸部表現領域2の輪郭の近傍において、艶調整層4の艶状態が、その輪郭から内部へ進むに従って、凹部又は凸部表現領域2の表面の艶状態に近い艶状態から、凹部又は凸部表現領域2の近傍以外の部分における艶調整層4の艶状態に至るまで、連続的又は段階的に変化する様に構成する。
【0034】
より具体的に説明すると、凹部又は凸部表現領域2を凹部として表現しようとする場合には、艶調整層4は当該領域2の表面より高い艶を有する様に設計され、しかも、当該領域2の輪郭の近傍において、当該領域2の輪郭から離れて艶調整層4の形成部分の内部に進むに従って、艶調整層4の艶が徐々に高くなる様に、階調を設けて形成される。逆に、凹部又は凸部表現領域2を凸部として表現しようとする場合には、艶調整層4は当該領域2の表面より低い艶を有する様に設計され、しかも、当該領域2の輪郭の近傍において、当該領域2の輪郭から離れて艶調整層4の形成部分の内部に進むに従って、艶調整層4の艶が徐々に低くなる様に、階調を設けて形成されるのである。
【0035】
艶調整層4の艶状態に階調を設ける手段としては、艶状態の異なる複数種類の印刷インキ又はコーティング剤等を、凹部又は凸部表現領域2の輪郭直近から艶調整層4の形成部分の内部に進む方向に、艶状態の低いものから順に印刷形成する方法も考えられるが、製造工程が煩雑で見当合わせも困難であり、あまり好ましいものとは言えない。例えば、グラビア印刷版の版深又は面積率の変更等の手段により、印刷インキ又はコーティング剤等の塗布量を変化させる方法を採用することが好ましい。
【0036】
上記艶調整層4に設ける階調は、深さ(高さ)の連続的な変化の表現を目的とする場合であっても、艶状態の変化としては段階的な階調(図1)を採用したほうが、視覚的に得られる凹凸の立体感の面では有利である場合が多い。特に、例えば木材の導管溝等の様に、凹凸の寸法が非常に微細である倍には、連続的な階調では調子感に乏しく、天然の導管溝の断面形状の有する立体感を十分に表現できない場合が多いので、段階的な階調とすることが好ましい。
【0037】
また、上記階調は、塗布量の変化による階調に限定されるものではなく、網点等の面積率の変化によって階調を表現することもできる(図3)し、塗布量の変化と面積率の変化とを併用することもできる(図示せず)。但し、一般に、印刷版の設計上は網点状であっても、印刷時の樹脂の流動により多少とも連続化するのが普通であるから、これらの差は必ずしも本質的なものではない。以下、簡単のため、図面の上では図1に示した様な段階型の図で説明するが、これは上述した種々の階調表現技法を全て包含するものである。
【0038】
木目導管等の様に微細な凹部又は凸部の表現にあっては、艶調整層4に階調を設ける部分も当然に微細なものとなり、印刷版や印刷インキ等にも高度の解像力が要求される。例えばグラビア印刷の場合には、スクリーン目の細かい印刷版を使用する必要があり、しかも版深又は面積率の微妙な差を再現性良く転移する性能がインキ等にも求められるのである。一方、既述の様に、表面物性の観点からは艶調整層4には硬化性樹脂を使用することが好ましいのであるが、化粧材の表面コート剤として多用されている一般の2液硬化型樹脂では、印刷の進行中に硬化反応が進んで増粘し、版詰まりを発生して階調の再現性が低下する場合がある。
【0039】
従って、艶調整層4に使用する樹脂は、印刷中の経時で増粘する心配のないものを選定することが好ましい。具体的には、硬化剤としてブロックイソシアネートを使用した硬化型ウレタン系樹脂を使用することが好ましい。この樹脂は、印刷中の常温の塗液状態では硬化反応が進行しないので増粘することがなく、一方印刷後の硬化には、電子線又は紫外線線照射装置等の特殊な設備を必要とすることなく、乾燥工程における乾燥機の熱によりブロックが解除されて硬化反応が急速に進行し、完全硬化するので、印刷物を巻き取ったり積み重ねたりしても、乾燥不良によるブロッキングを発生する心配もない等の利点がある。
【0040】
ところで、凹部又は凸部表現領域2を凹部として表現しようとする場合には、凹部又は凸部表現領域2の表面は、艶の低い状態となっていなければならない。その為には、図1に示す例の如く、凹部又は凸部表現領域2に対応する模様32が当該領域2において表面に露出している場合には、該模様32を形成するための印刷インキ等に適宜艶調整剤等を添加し、艶の低い状態に調整しておく必要がある。逆に、凹部又は凸部表現領域2を凸部として表現しようとする場合には、該領域2に対応する模様3を形成するための印刷インキとして、印刷後の表面の艶の高い印刷インキを使用する必要がある。
【0041】
他の方法として、図4に示す様に、凹部又は凸部表現領域2に対応する模様32を含む絵柄3と、艶調整層4との間に、凹部又は凸部表現領域2の表面が有すべき艶状態を有する第二艶調整層5を設けることもできる。第二艶調整層5の材質は、艶調整層4と同一であっても異なっていても良いが、言うまでもなく、少なくとも艶調整層4とは艶が異なる必要がある。つまり、前記領域2を凹部として表現しようとする場合には、第二艶調整層5の艶を艶調整層4の艶よりも低く設計し、逆に凸部として表現しようとする場合には、第二艶調整層5の艶を艶調整層4の艶よりも高く設計すれば良い。
【0042】
この様に、第二艶調整層5を設けた構成とすると、凹部又は凸部表現領域2に対応する模様32を形成するための印刷インキに艶の調整を施す必要がない。また特に、紙類等の様に表面が粗な基材1を使用して、前記領域2の艶を高く設定したい場合には、前記模様32の印刷インキを過度に厚く設けなくても、容易に当該領域の艶を十分に高めることができる利点がある。その他、前記模様32が第二艶調整層5によって保護されるので、当該領域2の表面物性が向上する利点もある。この観点からは、第二艶調整層5も、硬化型樹脂を主体として構成することが好ましい。
【0043】
第二艶調整層5は、必ずしも全面に設ける必要はなく、凹部又は凸部表現領域2のみに設けても良い(図5)。また、凹部又は凸部表現領域2の輪郭の外側にある幅を持った部分を含む領域に設けることもできる(図6)。後者の様に構成すると、第二艶調整層5と艶調整層4との見当合わせが多少ずれることがあっても、凹凸感に不自然性が生じる虞がないという利点がある。また、艶調整層4の階調部分の階調性が第二艶調整層5の表面の艶状態を下地として発現する(例えば、絵柄3の表面及び艶調整層4が共に高い艶を有し、第二艶調整層5が低い艶を有する場合には、艶調整層4の膜厚の薄い部分では、下地の第二艶調整層5の低い艶の効果が表面に及ぶことによって、艶調整層4の表面の艶が低目に観察される)場合には、第二艶調整層5は少なくとも、凹部又は凸部表現領域2と、該領域2の輪郭の近傍において艶調整層4が階調を有する領域との、両者を包含する領域に設けることが好ましい。
【0044】
なおここで、凹部又は凸部表現領域2と、該領域2に対応する模様32との位置関係について再度言及すると、凹部の底面又は凸部の頂面のみが他の部分と異なる色彩を有する凹部又は凸部を表現しようとする場合には、前記模様32は前記領域2と同一の輪郭を持って形成する(図4)のであるが、凹部又は凸部の輪郭の斜面部にも底面又は頂面と同一の色彩を有する凹部又は凸部を表現しようとする場合には、前記模様32は前記領域2の外側の、艶調整層4が階調を有する領域の輪郭にまで及ぶ領域に形成することが好ましい(図7)。例えば、天然木材の断面の導管溝の模倣を目的とする場合には、後者の構成が推奨される。
【0045】
また、凹部又は凸部の輪郭の斜面部において色彩が連続的に変化している凹部又は凸部を表現しようとする場合には、前記領域2の輪郭の近傍の艶調整層4が階調を有する領域において前記模様32の色彩に階調を設ければ良い(図8)。或いは、前記模様32の輪郭を、艶調整層4が階調を有する領域の内外の輪郭の中間に位置させることによっても、視覚的に近似した表現効果を達成することができる(図9)。その他、以上の各種の表現技法を位置により組み合わせて採用することにより、位置により凹凸感が変化した複雑な凹凸形状を表現することも可能である。
【0046】
本願発明の具体的な適用例としては、既に何度も繰り返し述べた様に、天然木材の導管溝の表現が、最も代表的なものである。導管溝は物理的には凹部であるから、一般的には導管模様部分の表面の艶を低くし、該導管模様部分を除く表面に艶の高い艶調整層4を設けた構成が採用される。しかし、ある種の針葉樹材の様に、木肌の色調が淡く、導管溝部分が浮き上がって見える樹種の表現には、上記とは艶の高低を逆転した方が実物感が出る場合もある。また、係る艶の高低の逆転により、既成の概念には囚われずに独自の新規な導管表現が得られる場合もある。
【0047】
以上の説明では、凹部又は凸部表現領域2の近傍以外の部分における艶調整層4の艶状態が一定であることを暗黙の裡に想定していたが、例えば天然木材における春材部と秋材部との艶差や、切断面と木目方向との角度による艶差等の表現を目的として、艶調整層4の艶状態に木目模様と同調した変化を持たせることもできる。この様にすると、前述した導管溝部の形状の忠実な表現と相俟って、天然木材により近い、極めて意匠性に優れた化粧材を得ることができる。
【0048】
【実施例】
<実施例1>
坪量30g/mの薄葉紙の表面に、硝化綿系グラビア印刷インキを使用して、下地着色と隠蔽性付与を兼ねた1色の着色ベタ層と、導管模様を除く3色の木目柄層と、該木目柄層に同調した1色の導管柄層とを順次印刷し、更に、艶調整剤としてシリカ粉末を添加して艶を低く調整した2液硬化型ウレタン系樹脂を乾燥後の塗布量5g/mに塗工し、最後に、艶の高いブロックイソシアネート硬化型ウレタン系樹脂を、導管柄層の輪郭の近傍に階調を設けて、導管柄部分を除く表面に乾燥後の塗布量2g/mに印刷して艶調整層を形成し、本発明の化粧材を得た。
【0049】
なお、上記印刷に際しては、アフター乾燥ゾーンを備えた化粧シート製造用グラビア7色印刷機を使用し、印刷速度は100m/分、乾燥条件は各色毎に100℃と、全色印刷塗工後に各5mずつ3ゾーンに分割されたアフター乾燥ゾーンで順に80℃、120℃、180℃の3段階の温度設定によりトップコート剤を十分に乾燥硬化させた後、巻き取って保管した。
【0050】
以上の様にして得た化粧材は、導管模様の輪郭部の艶状態の階調により、天然導管に近似した導管溝の凹凸感を有する、意匠性に優れた化粧材となった。しかも、印刷中の版詰まりや、乾燥不良によるブロッキングやトラレ等の問題を発生することなく、作業性よく製造することができた。
【0051】
<実施例2>
坪量30g/mの薄葉紙の表面に、硝化綿系グラビア印刷インキを使用して、下地着色と隠蔽性付与を兼ねた1色の着色ベタ層と、導管模様を除く3色の木目柄層と、該木目柄層に同調した1色の導管柄層とを順次印刷し、更に、艶の高い2液硬化型ウレタン系樹脂を乾燥後の塗布量5g/mに塗工し、最後に、艶調整剤としてシリカ粉末を添加して艶を低く調整したブロックイソシアネート硬化型ウレタン系樹脂を、導管柄層の輪郭の近傍に階調を設けて、導管柄部分を除く表面に乾燥後の塗布量2g/mに印刷して艶調整層を形成し、本発明の化粧材を得た。なお、印刷条件は実施例1の条件に準じた。
【0052】
<実施例3>
坪量30g/mの薄葉紙の表面に、硝化綿系グラビア印刷インキを使用して、下地着色と隠蔽性付与を兼ねた1色の着色ベタ層と、導管模様を除く3色の木目柄層と、該木目柄層に同調した1色の導管柄層とを順次印刷し、更に、艶の高い2液硬化型ウレタン系樹脂を乾燥後の塗布量5g/mに塗工し、最後に、艶調整剤としてシリカ粉末を添加して艶を低く調整したブロックイソシアネート硬化型ウレタン系樹脂を、導管柄層の輪郭の近傍に階調を設けた他、導管柄部分を除く部分にも木目柄に同調した艶階調を持たせて、導管柄部分を除く部分に乾燥後の平均塗布量2g/mに印刷して艶調整層を形成し、本発明の化粧材を得た。なお、印刷条件は実施例1の条件に準じた。
【0053】
【発明の効果】
以上に示した様に、本発明の化粧材は、基材に凹部又は凸部表現領域に対応する模様を含む絵柄が設けられ、前記領域以外の部分の表面に、前記領域の表面とは異なる艶を有する艶調整層が設けられてなる化粧材において、前記艶調整層が、前記領域の輪郭の近傍において艶状態に階調を有する構成により、例えば天然木材における導管溝部等の様に、深さ(高さ)が連続的に変化した斜面部のある凹凸形状を、忠実に表現することができ、意匠感に優れた化粧材を得ることができるという優れた効果を奏するものである。
【0054】
また特に、前記艶調整層を、硬化剤としてブロックイソシアネートを使用した硬化型ウレタン系樹脂から構成することにより、印刷中に硬化反応が進行して増粘することがないので、版詰まりによって微妙な階調表現が阻害されることがなく、しかも乾燥機での加熱処理によって短時間で完全硬化させることができるので、新たな設備増設や印刷速度の低下等の措置を必要とすることなく、従来の化粧材とほぼ同一の条件でインラインでの一貫生産により極めて効率良く製造することができるという優れた効果を奏するものである。
【図面の簡単な説明】
【図1】本発明の化粧材の実施の形態を示す側断面図である。
【図2】本発明の化粧材の実施の形態を示す側断面図である。
【図3】本発明の化粧材の実施の形態を示す側断面図である。
【図4】本発明の化粧材の実施の形態を示す側断面図である。
【図5】本発明の化粧材の実施の形態を示す側断面図である。
【図6】本発明の化粧材の実施の形態を示す側断面図である。
【図7】本発明の化粧材の実施の形態を示す側断面図である。
【図8】本発明の化粧材の実施の形態を示す側断面図である。
【図9】本発明の化粧材の実施の形態を示す側断面図である。
【符号の説明】
1 基材
2 凹部又は凸部表現領域
3 絵柄
31 下地模様
32 凹部又は凸部表現領域に対応する模様
4 艶調整層
5 第二艶調整層
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a decorative material for use in surface makeup of buildings and the like, interior and exterior of buildings, furniture and the like. More specifically, the present invention relates to a decorative material that expresses unevenness three-dimensionally due to the difference in surface gloss.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a desired pattern such as a wood grain pattern is usually applied to a decorative material for use in surface decoration of a building interior or exterior, a fitting, furniture, or the like. And, not only to express the grain pattern etc. in a plane, but also to make a three-dimensional representation of the unevenness of the surface of the conduit and the like that natural wood has, mainly for applications where a high-class feeling is desired, Widely used.
[0003]
As a technique for expressing a three-dimensional unevenness on the surface of a decorative material in combination with a planar wood grain pattern, various methods have been conventionally devised and are used properly according to the purpose. Typical examples of such methods are listed below.
[0004]
(1) On the surface of the material for decorative material, an embossed plate or emboss roll having an uneven shape obtained by inverting the uneven shape to be applied, an embossed shaping film, etc. are pressure-bonded, and the material for the decorative material is along the uneven shape. A method of mechanically imparting a concavo-convex shape by deforming (Japanese Patent Publication No. 47-18559). It is the most excellent in terms of the reproducibility of the uneven shape, and it can be said that it is the mainstream as a method for applying unevenness to the decorative material. In addition to the method applied to the surface of an already molded cosmetic material, an embossed plate or the like is pressure-bonded to the surface of a curable cosmetic material having fluidity in an uncured state, and at the same time as or after shaping. There is also a method of curing after shaping (Japanese Patent Laid-Open No. 51-558, Japanese Patent Publication No. 51-44790).
[0005]
(2) An ionizing radiation curable resin layer is formed on the surface of the material for decorative material, and this is partially irradiated with ionizing radiation through a mask film or the like, and an uncured ionizing radiation curable resin in a non-irradiated part is formed. A method of removing the recesses later or forming a recess by utilizing a curing shrinkage phenomenon (Japanese Patent Publication No. 51-40096, Japanese Patent Publication No. 48-4602).
[0006]
(3) A pattern is applied to the surface or bottom surface of the curable resin applied to the surface of the cosmetic material with an ink containing a curing inhibitor or a curing accelerator, and then the curable resin is cured to cure the curing rate. A method in which the resin remaining uncured due to the difference is removed later, or a recess is formed by utilizing a curing shrinkage phenomenon (Japanese Patent Laid-Open Nos. 53-120780 and 46-36479).
[0007]
(4) A pattern is applied to the surface or bottom of the heat-foamable resin layer with an ink containing a foaming accelerator or a foaming inhibitor, and this is heated and foamed. A method of forming a concavo-convex shape by varying the foaming degree of the heat-foamable resin layer (Japanese Examined Patent Publication Nos. 43-15713 and 43-28636).
[0008]
(5) A method in which a heat-foamable ink is printed in a pattern on the surface of a decorative material and heated to form a convex portion (Japanese Patent Laid-Open No. 58-92562).
[0009]
(6) A method of printing a colored or non-colored solvent-free or high-solid ink thickly on the surface of a material for a cosmetic material, using a large plate depth gravure printing plate or screen printing plate, etc. (Japanese Patent Publication No. 50-14466).
[0010]
(7) A coating having a property of being repelled by the ink after a pattern of a portion to be a recess is formed on the surface of the material for the decorative material with an ink to which a liquid repellent substance such as a silicone compound or a fluorine compound is added. A method of forming a recess by applying a coating agent on the entire surface and repelling the coating agent on the pattern (Japanese Patent Publication No. 47-16629).
[0011]
Each of the various methods described above is intended to realize a three-dimensional concavo-convex feeling by actually forming the concavo-convex shape to be expressed on the surface of the decorative material. There are many restrictions on the above. For example, in (1), materials that can be used as cosmetic materials are limited to materials with excellent embossability (shapeability and retention), and expensive embossing plates and embossing devices are required. It is also difficult to synchronize the pattern with the uneven pattern. (2)-(5) require special resin, chemical | medical agent, equipment, etc., a manufacturing process is complicated, and productivity is low.
[0012]
Since (6) uses a highly viscous ink, it has problems such as plate clogging and is not suitable for expressing delicate pictures. In (7), a special chemical called a liquid repellent is required, and defects such as a non-repellent residue are likely to occur. In addition, as a problem common to (6) and (7), when the area ratio of the convex portion is large, the amount of ink and paint used for the convex portion is very large, and the physical properties of the concave portion are improved. It can be mentioned that it is difficult.
[0013]
In addition, as a problem common to the methods (1) to (7), since there is an uneven shape on the surface of the decorative material, especially when the area ratio of the recesses is relatively small, such as a wood conduit pattern However, there is a problem in that contaminants attached to the surface of the decorative material easily accumulate in the recesses, and it is difficult to remove the contaminants accumulated in the recesses even if the surface is wiped.
[0014]
In contrast to the various methods described above, instead of actually forming the uneven shape to be expressed on the surface of the decorative material, the illusion of the human eye is made different by changing the gloss state of the surface of the portion to be expressed as the concave portion and the convex portion. There is also a technique for visually expressing the three-dimensional effect of unevenness. That is, even if there is no uneven shape in reality, the relatively high gloss portion is recognized as a convex portion and the low gloss portion as a concave portion to human eyes.
[0015]
Specifically, the above-described method is, for example, by forming a transparent or translucent synthetic resin paint layer having a low gloss on the entire printed surface of a substrate on which an appropriate pattern including a dent pattern is printed, and then the synthetic resin. This is achieved by forming a glossy transparent or translucent synthetic resin coating layer on the surface of the material layer excluding the portion corresponding to the dent pattern (Japanese Patent Publication No. 50-39115). Of course, if the relationship of glossiness is reversed, it is possible to obtain a cosmetic material in which the relationship of the unevenness is reversed.
[0016]
According to this method, it is possible to easily give a three-dimensional unevenness to any substrate simply by preparing two kinds of paints having different gloss without the need for special chemicals. it can. In addition, the formation of paint layers with different gloss can be performed by conventional printing methods such as gravure printing, following the formation of the pattern, so there is no need for special equipment, high production efficiency, and synchronization with the pattern. Easy. In addition, the thickness of the paint layer can be much thinner compared to the height difference of the unevenness to be expressed, so that the amount of resin used can be saved, and it is also advantageous in terms of flexibility, making it suitable for bending processing. Excellent cosmetics can be easily realized. Moreover, since there is no excessive unevenness | corrugation on the surface of a decorative material, there also exists an advantage that a contaminant does not accumulate in a recessed part.
[0017]
In view of the many advantages, cosmetic materials that employ this method have already been used in large quantities, but in reality, they have not yet surpassed the various methods described above in terms of luxury. . Considering the reason, for example, according to the machine embossing method of (1), it is possible to faithfully reproduce the uneven shape of a natural wood conduit or the like including its cross-sectional shape. On the other hand, in this method using two kinds of paints having different glosses, there are two kinds of surface gloss stages, and therefore two kinds of unevenness stages that can be expressed. Therefore, there is a problem that it is not possible to express an uneven shape having a slope portion whose depth (height) continuously changes, such as a natural wood conduit.
[0018]
[Problems to be solved by the invention]
The present invention has been made in order to solve such problems, and the object of the present invention is to provide a natural material such as a conduit for natural wood in a decorative material that expresses a concavo-convex shape by a difference in surface gloss. In addition, the object is to obtain a decorative material that expresses an uneven shape whose depth (height) is continuously changed.
[0019]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a base pattern and a pattern corresponding to the concave or convex expression area on the substrate, and the pattern corresponding to the concave or convex expression area is exposed on the surface, A gloss adjusting agent is added to the pattern corresponding to the concave or convex expression area, and a gloss different from the pattern corresponding to the concave or convex expression area is formed on the surface of the portion other than the pattern corresponding to the concave or convex expression area. There is provided a decorative material provided with a gloss adjusting layer having a gradual gradation in the gloss state in the vicinity of the contour of the region. Alternatively, a base pattern, a pattern corresponding to the concave or convex expression area, and a second gloss adjustment layer are provided on the base material, and the second gloss adjustment layer is provided on the surface of a portion other than the pattern corresponding to the concave or convex expression area. A decorative material provided with a gloss adjustment layer having a gloss different from that of the cosmetic material, wherein the gloss adjustment layer has a gradation in a glossy state in the vicinity of the contour of the region I will provide a.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows an example of a cross section of a decorative material obtained by the present invention. In this decorative material, a pattern 3 composed of a base pattern 31 and a pattern 32 corresponding to the concave or convex expression region 2 is formed on the base material 1 for decorative material. Is provided with a gloss adjusting layer 4 having a gloss different from that of the surface of the concave or convex portion expressing area 2, and the gloss adjusting layer 4 has an outline of the concave or convex expressing area 2. In the vicinity of, gradation is provided in the glossy state. In the present invention, the “recess or protrusion expression region” means a region to be expressed as a recess or protrusion in comparison with other portions (portions where the gloss adjusting layer 4 is provided).
[0021]
As the base material 1, various materials can be used according to the intended application as conventionally known. Specifically, for example, paper such as thin paper, titanium paper, resin-impregnated paper, flame retardant paper, inorganic paper, woven or non-woven fabric made of natural fiber or synthetic fiber, polyolefin resin, polyester resin, acrylic resin , Synthetic resin base materials such as styrene resin, polyamide resin, fiber resin, polycarbonate resin, polyvinyl chloride resin, polyvinylidene chloride resin, fluorine resin, wood veneer, veneer, plywood, laminated material, particle Wood base materials such as boards, medium density fiber boards, gypsum boards, cement boards, calcium silicate boards, inorganic boards such as ceramic boards, metal bases such as iron, copper, aluminum, stainless steel, etc. Conventionally known arbitrary materials such as composites and laminates can be used, and the shape thereof is not limited at all, for example, a film shape or a sheet shape, a plate shape, or an odd-shaped molded body.
[0022]
There are no particular restrictions on the constituent material of the pattern 3, but generally a printing ink or coating obtained by dissolving or dispersing a colorant such as a dye or pigment in a suitable solvent together with a suitable binder resin. Material is used.
[0023]
Examples of the colorant include inorganic pigments such as carbon black, titanium white, zinc white, petal, yellow lead, bitumen, cadmium red, azo pigments, lake pigments, anthraquinone pigments, phthalocyanine pigments, isoindolinone pigments, dioxazines. Organic pigments such as pigments, or a mixture of two or more of these can be used.
[0024]
Examples of the binder resin include acrylic resins, styrene resins, polyester resins, urethane resins, polyvinyl resins, alkyd resins, petroleum resins, ketone resins, epoxy resins, melamine resins, and fluorine resins. Various synthetic resins such as resin, silicone resin, fiber resin and rubber resin, or a mixture or copolymer thereof can be used.
[0025]
Examples of the solvent include toluene, xylene, cyclohexane, ethyl acetate, butyl acetate, methyl alcohol, ethyl alcohol, isopropyl alcohol, acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, water, or a mixture thereof. be able to.
[0026]
In addition, various additives such as extender pigments, plasticizers, dispersants, surfactants, tackifiers, adhesion aids, drying agents, curing agents, curing accelerators or curing retarders are used as necessary. The
[0027]
The pattern 3 needs to include at least a pattern 32 corresponding to the concave or convex expression area 2. On the other hand, the base pattern 31 is not essential, but can be provided for the purpose of giving a design that is visible as a color pattern independent of the surface irregularities to a portion other than the concave portion or the convex portion expression region 2. For example, in the case of a wood grain pattern, as is well known, it is usually printed by separating into a solid ground, wood grain pattern, conduit pattern, etc., among which the ground solid and wood grain pattern are used in the cosmetic material of the present invention. The conduit pattern is provided as a pattern 32 corresponding to the concave or convex expression area 2. Of course, in the present invention, the pattern 3 is not limited to the wood grain pattern, and can be appropriately applied to a stone pattern, an abstract pattern, and the like.
[0028]
In FIG. 1, the pattern 32 corresponding to the concave or convex expression area 2 is described as being provided on the surface of the base pattern 31, but this necessarily defines the vertical relationship between the two. However, if the both may be provided as a continuous pattern on the same surface, the vertical relationship may be reversed, or a transparent layer (the transparent substrate 1 may be provided) between the two. ) Or the like may be interposed. Further, all or part of the pattern 3 may be integrated with the base material 1 by mixing or infiltrating the colorant into the base material 1. In short, it is only necessary that the pattern 32 corresponding to the concave or convex expression region 2 and the base pattern 31 can be distinguished in color when observed from the surface side of the decorative material.
[0029]
Further, the contour of the pattern 32 corresponding to the concave or convex expression area 2 is not necessarily exactly the same as the contour of the area 2 and is slightly shifted inward or outward from the contour of the area 2. May be. On the contrary, the apparent unevenness can be appropriately adjusted by positively shifting the contours of the two slightly. In addition, by changing the direction and distance of the deviation between the two contours depending on the location in the region 2, it is possible to change the apparent unevenness depending on the location.
[0030]
The formation method of the pattern 3 is most commonly performed by an appropriate printing method such as a gravure printing method, an offset printing method, a screen printing method, an electrostatic printing method, or an ink jet printing method, but is not limited thereto. Instead, for example, the above-described solid substrate may be formed by a coating method such as a roll coating method, a knife coating method, or a die coating method, and other patterns can be formed by any conventionally known image forming method.
[0031]
As the constituent material of the gloss adjusting layer 4, the same printing inks or coating agents as those mentioned as the constituent material of the pattern 3 described above can be used. However, since the gloss adjusting layer 4 needs to have at least transparency that allows the pattern 3 to be seen through, the printing ink or coating agent forming the gloss does not contain any colorant such as dye or pigment. Or it is necessary to use what contains only a small amount to such an extent that the required transparency is not impaired. Further, since the gloss adjusting layer 4 constitutes the outermost surface layer of the decorative material, it should have surface properties such as abrasion resistance, scratch resistance, solvent resistance, and contamination resistance necessary for the decorative material. It is preferable to use a material mainly composed of a curable resin. Specifically, for example, thermosetting resins such as melamine resins, epoxy resins, amino alkyd resins, urethane resins, polyester resins, silicone resins, ionizing radiation curable resins such as acrylic resins, etc. Can be preferably used.
[0032]
Further, the gloss adjustment layer 4 needs to have a gloss different from that of the surface of the concave or convex expression area 2. Specifically, when the concave portion or the convex portion expressing area 2 is to be expressed as a concave portion, the gloss is designed to be higher than the surface of the concave portion or the convex portion expressing area 2, and conversely, the concave portion or the convex portion expressing area 2 is designed. When it is intended to express as a convex portion, it is necessary to design the gloss lower than the surface of the concave portion or the convex portion expressing region 2. In order to appropriately adjust the gloss state of the gloss adjusting layer 4, for example, a gloss adjusting agent such as silica, alumina, calcium carbonate, barium sulfate or the like can be added as appropriate.
[0033]
In the present invention, for the purpose of expressing a continuous depth (height) change due to the change in the gloss state, the gloss adjustment layer 4 has a gloss state in the vicinity of the contour of the concave or convex expression region 2. It is characterized by providing gradation. That is, in the vicinity of the contour of the concave or convex expression area 2, as the gloss state of the gloss adjustment layer 4 proceeds from the contour to the inside, the gloss state close to the gloss state of the surface of the concave or convex expression area 2 It is configured to change continuously or stepwise until reaching the gloss state of the gloss adjusting layer 4 in a portion other than the vicinity of the concave portion or the convex portion expression region 2.
[0034]
More specifically, when the concave or convex expression area 2 is to be expressed as a concave, the gloss adjusting layer 4 is designed to have a higher gloss than the surface of the area 2, and the area 2 In the vicinity of the contour, the gradation adjustment layer 4 is formed with gradation so that the gloss of the gloss adjustment layer 4 gradually increases as it moves away from the contour of the region 2 and goes into the formation portion of the gloss adjustment layer 4. Conversely, when the concave or convex expression region 2 is to be expressed as a convex portion, the gloss adjustment layer 4 is designed to have a lower gloss than the surface of the region 2, and the contour of the region 2 In the vicinity, it is formed with gradation so that the gloss of the gloss adjusting layer 4 gradually decreases as it moves away from the outline of the region 2 and goes into the formation portion of the gloss adjusting layer 4.
[0035]
As means for providing gradation in the gloss state of the gloss adjustment layer 4, a plurality of types of printing inks or coating agents having different gloss conditions can be applied to the portion where the gloss adjustment layer 4 is formed from the vicinity of the contour of the concave or convex expression area 2. A method of printing in order from the lowest glossy state in the direction toward the inside is also conceivable, but the manufacturing process is complicated and registration is difficult, and it is not preferable. For example, it is preferable to employ a method of changing the coating amount of printing ink or coating agent by means such as changing the plate depth or area ratio of the gravure printing plate.
[0036]
The gradation provided in the gloss adjusting layer 4 is a stepwise gradation (FIG. 1) as a change in the gloss state even if the purpose is to express a continuous change in depth (height). In many cases, it is advantageous in terms of the three-dimensional appearance of the unevenness obtained visually. In particular, for example, when the size of the unevenness is very fine, such as a wood conduit groove, the tone of continuous tone is poor, and the three-dimensional feeling of the cross-sectional shape of a natural conduit groove is sufficient. Since there are many cases where it cannot be expressed, it is preferable to use a stepwise gradation.
[0037]
Further, the gradation is not limited to the gradation due to the change in the coating amount, and the gradation can also be expressed by the change in the area ratio such as halftone dots (FIG. 3). A change in area ratio can also be used together (not shown). However, in general, even if the printing plate has a halftone dot design, it is usually continuous somewhat due to the flow of the resin during printing, so these differences are not necessarily essential. In the following, for the sake of simplicity, the description will be made with reference to the stepped diagram as shown in FIG. 1 on the drawing, but this includes all the above-described various gradation expression techniques.
[0038]
In the expression of fine concave or convex parts such as a wood grain conduit, the gradation adjustment layer 4 is naturally finer, and high resolution is required for printing plates and printing inks. Is done. For example, in the case of gravure printing, it is necessary to use a printing plate having a fine screen, and ink or the like is also required to transfer a subtle difference in plate depth or area ratio with good reproducibility. On the other hand, as described above, it is preferable to use a curable resin for the gloss adjusting layer 4 from the viewpoint of surface properties, but a general two-component curable type that is frequently used as a surface coating agent for a cosmetic material. In the case of the resin, the curing reaction proceeds during printing and the viscosity increases, which may cause plate clogging and lower the reproducibility of gradation.
[0039]
Therefore, the resin used for the gloss adjusting layer 4 is preferably selected so that there is no risk of thickening with time during printing. Specifically, it is preferable to use a curable urethane resin using blocked isocyanate as a curing agent. This resin does not increase in viscosity because the curing reaction does not proceed in the coating solution at room temperature during printing, while special curing equipment such as an electron beam or ultraviolet ray irradiation device is required for curing after printing. In addition, the block is released by the heat of the dryer in the drying process, and the curing reaction proceeds rapidly and completely cures. Therefore, even if the printed material is wound or stacked, there is no risk of blocking due to poor drying. There are advantages such as.
[0040]
By the way, when it is going to express the recessed part or the convex part expression area 2 as a recessed part, the surface of the recessed part or the convex part expression area 2 must be in a state with low gloss. For this purpose, as in the example shown in FIG. 1, when the pattern 32 corresponding to the concave or convex expression region 2 is exposed on the surface in the region 2, the printing ink for forming the pattern 32 is used. It is necessary to add a gloss adjusting agent or the like to the low gloss state. On the contrary, when the concave or convex expression region 2 is to be expressed as a convex portion, a printing ink having a high gloss on the surface after printing is used as the printing ink for forming the pattern 3 corresponding to the region 2. Need to use.
[0041]
As another method, as shown in FIG. 4, there is a surface of the concave or convex portion expressing area 2 between the pattern 3 including the pattern 32 corresponding to the concave or convex portion expressing area 2 and the gloss adjusting layer 4. It is also possible to provide the second gloss adjusting layer 5 having the gloss state to be achieved. The material of the second gloss adjusting layer 5 may be the same as or different from that of the gloss adjusting layer 4, but needless to say, the gloss needs to be at least different from that of the gloss adjusting layer 4. That is, when the region 2 is to be expressed as a concave portion, the gloss of the second gloss adjustment layer 5 is designed to be lower than the gloss of the gloss adjustment layer 4, and conversely, What is necessary is just to design the glossiness of the 2nd glossiness adjustment layer 5 higher than the glossiness of the glossiness adjustment layer 4. FIG.
[0042]
Thus, if it is set as the structure which provided the 2nd glossiness adjustment layer 5, it is not necessary to give glossiness adjustment to the printing ink for forming the pattern 32 corresponding to the recessed part or convex part expression area | region 2. FIG. In particular, when the base material 1 having a rough surface such as paper is used and the gloss of the region 2 is desired to be set high, it is easy even if the printing ink for the pattern 32 is not excessively thick. There is an advantage that the gloss of the region can be sufficiently increased. In addition, since the pattern 32 is protected by the second gloss adjusting layer 5, there is an advantage that the surface physical properties of the region 2 are improved. From this point of view, the second gloss adjusting layer 5 is also preferably composed mainly of a curable resin.
[0043]
The second gloss adjusting layer 5 is not necessarily provided on the entire surface, and may be provided only in the concave or convex expression region 2 (FIG. 5). Moreover, it can also provide in the area | region containing the part with the width | variety which exists in the outer side of the outline of a recessed part or the convex part expression area | region 2 (FIG. 6). The latter configuration has an advantage that there is no possibility of unnaturalness in the unevenness even if the registration between the second gloss adjusting layer 5 and the gloss adjusting layer 4 is slightly shifted. Further, the gradation of the gradation portion of the gloss adjustment layer 4 is expressed with the gloss state of the surface of the second gloss adjustment layer 5 as a base (for example, both the surface of the pattern 3 and the gloss adjustment layer 4 have high gloss). When the second gloss adjusting layer 5 has a low gloss, the thin gloss effect of the base second gloss adjusting layer 5 is exerted on the surface of the thin portion of the gloss adjusting layer 4, thereby adjusting the gloss. In the case where the gloss of the surface of the layer 4 is observed to be low), the second gloss adjusting layer 5 has at least the concave or convex expression area 2 and the gloss adjusting layer 4 in the vicinity of the contour of the area 2. It is preferable to provide in the area | region which includes both with the area | region which has a tone.
[0044]
Here, referring again to the positional relationship between the concave or convex expression region 2 and the pattern 32 corresponding to the region 2, only the bottom of the concave or the top of the convex has a color different from that of the other parts. Alternatively, when the convex portion is to be expressed, the pattern 32 is formed to have the same contour as that of the region 2 (FIG. 4), but the bottom surface or the top is also formed on the slope portion of the contour of the concave portion or the convex portion. In the case where a concave portion or a convex portion having the same color as the surface is to be expressed, the pattern 32 is formed in a region outside the region 2 and extending to the contour of the region where the gloss adjusting layer 4 has gradation. It is preferable (FIG. 7). For example, the latter configuration is recommended for the purpose of mimicking a conduit groove in a cross section of natural wood.
[0045]
In addition, when trying to express a concave or convex portion whose color continuously changes in the slope of the contour of the concave or convex portion, the gloss adjusting layer 4 near the contour of the region 2 has gradation. A gradation may be provided in the color of the pattern 32 in the area (FIG. 8). Alternatively, a visually approximate expression effect can also be achieved by positioning the contour of the pattern 32 in the middle of the contour inside and outside the region where the gloss adjusting layer 4 has gradation (FIG. 9). In addition, it is also possible to express a complex concavo-convex shape in which the concavo-convex sensation changes depending on the position by adopting a combination of the above various expression techniques depending on the position.
[0046]
As a specific application example of the present invention, the expression of a conduit groove of natural wood is the most representative as already described many times. Since the conduit groove is physically a concave portion, generally, a configuration is adopted in which the gloss of the surface of the conduit pattern portion is lowered and the gloss adjustment layer 4 having a high gloss is provided on the surface excluding the conduit pattern portion. . However, there are cases in which the actual appearance is more apparent when the luster is reversed with respect to the expression of the tree species in which the color tone of the bark is light and the conduit groove portion is lifted up like some kind of coniferous wood. In addition, due to the reversal of the glossiness, there is a case where an original new conduit expression is obtained without being bound by the existing concept.
[0047]
In the above description, it is implicitly assumed that the gloss state of the gloss adjustment layer 4 in a portion other than the vicinity of the concave or convex expression area 2 is constant. For the purpose of expressing the gloss difference with the material part or the gloss difference depending on the angle between the cut surface and the grain direction, the gloss state of the gloss adjusting layer 4 can be changed in synchronization with the grain pattern. In this way, in combination with the faithful expression of the shape of the conduit groove described above, it is possible to obtain a decorative material that is closer to natural wood and has excellent design properties.
[0048]
【Example】
<Example 1>
Basis weight 30g / m 2 Using a nitrified cotton-based gravure printing ink on the surface of the thin paper, one colored solid layer that also serves as a base color and concealing, a three-color wood grain pattern layer excluding the conduit pattern, and the wood grain pattern layer A one-color conduit pattern layer that is in tune with each other is printed in sequence, and a two-component curable urethane-based resin that has been adjusted to a low gloss by adding silica powder as a gloss adjusting agent is applied at a coating amount of 5 g / m after drying. 2 Finally, a glossy blocked isocyanate curable urethane resin is applied to the surface of the conduit handle layer in the vicinity of the contour of the conduit handle layer, and the coating amount after drying on the surface excluding the conduit handle portion is 2 g / m. 2 Was printed on to form a gloss adjusting layer, and the decorative material of the present invention was obtained.
[0049]
In the above printing, a gravure 7-color printing machine for manufacturing decorative sheets provided with an after-drying zone is used, the printing speed is 100 m / min, the drying conditions are 100 ° C. for each color, and after each color printing coating, The top coat agent was sufficiently dried and cured by three stages of temperature setting of 80 ° C., 120 ° C., and 180 ° C. in the after-drying zone divided into three zones of 5 m, and then wound up and stored.
[0050]
The cosmetic material obtained as described above became a cosmetic material excellent in design, having a feeling of unevenness of the conduit groove similar to the natural conduit, depending on the gradation of the gloss state of the contour portion of the conduit pattern. Moreover, it was possible to manufacture with good workability without causing problems such as plate clogging during printing, blocking due to poor drying, and traying.
[0051]
<Example 2>
Basis weight 30g / m 2 Using a nitrified cotton-based gravure printing ink on the surface of the thin paper, one colored solid layer that also serves as a base color and concealing, a three-color wood grain pattern layer excluding the conduit pattern, and the wood grain pattern layer One-color conduit pattern layer that is in tune with each other is printed in sequence, and a glossy two-component curable urethane resin is applied after drying 5 g / m 2 Finally, block isocyanate-cured urethane resin, which has been adjusted to a low gloss by adding silica powder as a gloss modifier, is provided with gradation near the contour of the conduit handle layer, 2g / m after drying on the surface to be removed 2 Was printed on to form a gloss adjusting layer, and the decorative material of the present invention was obtained. The printing conditions were the same as those in Example 1.
[0052]
<Example 3>
Basis weight 30g / m 2 Using a nitrified cotton-based gravure printing ink on the surface of the thin paper, one colored solid layer that also serves as a base color and concealing, a three-color wood grain pattern layer excluding the conduit pattern, and the wood grain pattern layer One-color conduit pattern layer that is in tune with each other is printed in sequence, and a glossy two-component curable urethane resin is applied after drying 5 g / m 2 Finally, block isocyanate-cured urethane resin with low gloss adjusted by adding silica powder as a gloss adjusting agent is provided with gradation near the contour of the conduit handle layer, and the conduit handle portion. Gloss gradation synchronized with the wood grain pattern is given to the part excluding the pipe, and the average coating amount after drying is 2 g / m on the part excluding the pipe pattern part. 2 Was printed on to form a gloss adjusting layer, and the decorative material of the present invention was obtained. The printing conditions were the same as those in Example 1.
[0053]
【The invention's effect】
As described above, the decorative material of the present invention is provided with a pattern including a pattern corresponding to the concave or convex expression region on the base material, and the surface of the portion other than the region is different from the surface of the region. In a decorative material provided with a gloss adjusting layer having a gloss, the gloss adjusting layer has a gradation in the gloss state in the vicinity of the contour of the region, so that, for example, a deep groove like a conduit groove in natural wood is used. It is possible to faithfully represent an uneven shape having an inclined surface portion whose height (height) is continuously changed, and an excellent effect is obtained that a decorative material having an excellent design feeling can be obtained.
[0054]
In particular, since the gloss adjusting layer is composed of a curable urethane-based resin using a blocked isocyanate as a curing agent, the curing reaction does not proceed and thicken during printing. Gradation is not disturbed, and it can be completely cured in a short time by heat treatment in a dryer, so there is no need for measures such as adding new equipment or reducing printing speed. It has an excellent effect that it can be manufactured very efficiently by in-line integrated production under almost the same conditions as those of the decorative material.
[Brief description of the drawings]
FIG. 1 is a side sectional view showing an embodiment of a decorative material of the present invention.
FIG. 2 is a side sectional view showing an embodiment of a decorative material of the present invention.
FIG. 3 is a side sectional view showing an embodiment of a decorative material of the present invention.
FIG. 4 is a side sectional view showing an embodiment of a decorative material of the present invention.
FIG. 5 is a side sectional view showing an embodiment of a decorative material of the present invention.
FIG. 6 is a side sectional view showing an embodiment of a decorative material of the present invention.
FIG. 7 is a side sectional view showing an embodiment of a decorative material of the present invention.
FIG. 8 is a side sectional view showing an embodiment of a decorative material of the present invention.
FIG. 9 is a side sectional view showing an embodiment of a decorative material of the present invention.
[Explanation of symbols]
1 Base material
2 Concave or convex expression area
3 design
31 Ground pattern
32 Pattern corresponding to the concave or convex expression area
4 Gloss adjustment layer
5 Second gloss adjustment layer

Claims (2)

基材に下地模様と凹部または凸部表現領域に対応する模様を設け、前記凹部または凸部表現領域に対応する模様が表面に露出しており、前記凹部または凸部表現領域に対応する模様に艶調整剤が添加され、前記凹部または凸部表現領域に対応する模様以外の部分の表面に前記凹部または凸部表現領域に対応する模様とは異なる艶を有する艶調整層が設けられてなる化粧材であって、前記艶調整層が、前記領域の輪郭の近傍において艶状態に段階的な階調を有することを特徴とする化粧材。A pattern corresponding to the base pattern and the concave or convex expression area is provided on the base material, and the pattern corresponding to the concave or convex expression area is exposed on the surface, and the pattern corresponding to the concave or convex expression area A makeup in which a gloss adjusting agent is added and a gloss adjusting layer having a gloss different from the pattern corresponding to the concave or convex expression area is provided on the surface of the portion other than the pattern corresponding to the concave or convex expression area A decorative material, wherein the gloss adjusting layer has a gradation in a glossy state in the vicinity of the contour of the region. 基材に下地模様と凹部または凸部表現領域に対応する模様と第2艶調整層を設け、前記凹部または凸部表現領域に対応する模様以外の部分の表面に前記第2艶調整層とは異なる艶を有する艶調整層が設けられてなる化粧材であって、前記艶調整層が、前記領域の輪郭の近傍において艶状態に段階的な階調を有することを特徴とする化粧材。A base pattern, a pattern corresponding to a concave or convex expression area, and a second gloss adjustment layer are provided on a base material, and the second gloss adjustment layer is formed on the surface of a portion other than the pattern corresponding to the concave or convex expression area. A decorative material provided with a gloss adjusting layer having different gloss, wherein the gloss adjusting layer has a gradation in a glossy state in the vicinity of the contour of the region.
JP21443298A 1998-07-29 1998-07-29 Cosmetic material Expired - Lifetime JP3629964B2 (en)

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