JP4576640B2 - Decorative sheet - Google Patents

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Publication number
JP4576640B2
JP4576640B2 JP20046998A JP20046998A JP4576640B2 JP 4576640 B2 JP4576640 B2 JP 4576640B2 JP 20046998 A JP20046998 A JP 20046998A JP 20046998 A JP20046998 A JP 20046998A JP 4576640 B2 JP4576640 B2 JP 4576640B2
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Japan
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layer
decorative sheet
resin layer
pattern
resin
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JP20046998A
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JP2000025177A (en
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哲生 相澤
生眞 西村
勝之 新名
眞宏 山添
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Toppan Inc
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Toppan Inc
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Description

【0001】
【発明の属する技術分野】
本発明は、木質系ボード類、無機系ボード類、金属板等の表面に接着剤で貼り合わせて化粧板として用いる化粧シートに関する。
【0002】
【従来の技術】
従来、前記の用途に用いられる化粧シートとしては、適度な柔軟性、耐磨耗性、耐傷性、耐薬品性、耐候性等を備え、さらにVカット加工等の曲げ加工適性やルータ加工等の切削加工適性等の後加工性に優れた塩化ビニル樹脂製シートが最も一般的であった。
【0003】
しかし、近年になって塩化ビニル樹脂は、使用後の廃棄物処理すなわち焼却処理において、酸性雨の原因や焼却炉の腐食の原因となる塩化水素ガスや猛毒物質であるダイオキシンの発生の要因となるものであり、廃棄物処理に係わる環境保護の観点から問題視されるようになった。また、化粧シートには表面に凹陥模様が施される場合が多いが、従来の塩化ビニル樹脂製シートは、100℃程度の雰囲気に長時間放置すると凹陥模様が消失してしまう欠点があった。係る事情により、塩化ビニル樹脂に替わる樹脂を使用した化粧シートが要望されるようになった。
【0004】
そこで、塩化ビニル樹脂に替わる樹脂として、ポリエチレン、ポリプロピレン、ポリエチレンテレフタレート、エチレン−ビニルアルコール、アクリル等の樹脂および共重合体を使用した化粧シートが提案されるようになった。しかし、従来の塩化ビニル樹脂の持つ適度な柔軟性、耐磨耗性、耐傷性、耐薬品性、耐候性等を備え、さらにVカット加工等の曲げ加工適性やルータ加工等の切削加工適性等をも満足して、なおかつ安価で提供され、さらに表面に凹陥模様を有する場合には高温下でも凹陥模様が消失することのない化粧シートは現在なお得られていない。
【0005】
【発明が解決しようとする課題】
本発明は、かかる従来技術の問題点を解決するものであり、その課題とするところは、塩化ビニル樹脂以外の材料を用いて、適度な柔軟性、耐磨耗性、耐傷性、耐薬品性、耐候性等の諸物性やVカット加工等の曲げ加工適性、ルータ加工等の切削加工適性等の後加工性において従来の塩化ビニル樹脂製化粧シートと同等あるいはそれ以上の特性を有し、しかも安価な化粧シートを提供することにある。さらに、表面に凹陥模様を有する化粧シートにあっては、100℃程度の雰囲気下でも凹陥模様が消失しない化粧シートを提供することをも併せて目的とする。
【0006】
【発明を解決するための手段】
本発明に於いて上記課題を達成するために、請求項1の発明では、少なくとも裏面樹脂層、模様層、凹陥部に充填インキが埋め込まれた凹陥模様が施された表面樹脂層、トップコート保護層を含む化粧シートにおいて、該裏面樹脂層および該表面樹脂層が、ガラス転移温度が−20℃以上−15℃以下で、かつビカット軟化温度が130℃以上140℃以下であるポリプロピレンを主成分とする樹脂でることを特徴とする化粧シートとしたものである。
【0008】
【発明の実施の形態】
以下本発明の実施の形態を図面を用いて説明する。
図1は単層型の化粧シートの一例を側断面で表した説明図である。
本発明の化粧シートの一例として、図1に示すように、少なくとも表面樹脂層(10)が、透明樹脂でなり、その樹脂にはガラス転移温度が−20℃以上−15℃以下であり、かつビカット軟化温度が130℃以上140℃以下であるポリプロピレンを主成分とする樹脂を用いてなることを特徴とする単層型の化粧シート(1)である。
【0009】
その理由は、前述したように、上記化粧シート(1)の表面樹脂層(10)に要求される物性として適度な柔軟性、耐磨耗性、耐傷性、耐薬品性、耐候性等の諸物性、Vカット加工等の曲げ加工適性、ルータ加工等の切削加工適性等の後加工適性があり、かつ低コストということを考慮するとポリプロピレンが最もバランスのとれた樹脂のひとつであると考える。ただしポリプロピレンならば何ら限定がないわけではなく、ガラス転移温度が−15℃を越えるものは低温雰囲気下でのVカット適性に難があり、具体的には−5℃の雰囲気下でVカット加工を行うと割れ、白化が生じる。また、ビカット軟化点が130℃未満のものはルータ切削加工の際に断面にバリが生じる。さらに130℃のグリセリン液に30秒間浸漬すると収縮が生じるという新たな問題が発生するためである。このうち、ルータ切削加工適性が悪化する原因として、ルータビットと化粧材との摩擦およびせん断応力による発熱が影響していると考えられる。
【0010】
前記樹脂でなる表面樹脂層(10)の製造方法としては、熱プレス法、カレンダー法、Tダイ押出法、インフレーション押出法等の公知の方法でよいが、一般的にポリプロピレンシートはTダイ押出法が好適に用いられる。その意味でTダイ押出法が好ましいが何ら限定されるものではない。
【0011】
また、図1に示すように、貼り合わせる木質系ボード、無機系ボード、金属板が表面から見えないようにするための隠蔽層(20)を施したり、木目柄、石目柄、砂地柄、抽象柄等の模様層(30)を施すことも好適に行われる。
【0012】
これらの隠蔽層(20)および模様層(30)の形成方法としては、前記表面樹脂層(10)の表面あるいは裏面あるいはその両方にグラビア印刷、凹版印刷、フレキソ印刷、シルク印刷、静電印刷、インクジェット印刷等の公知の印刷方法が一般的であるが必ずしもこれに限定するものではない。また用いられるインキも公知のもの、すなわちビヒクルに染料または顔料等の着色剤、体質顔料を添加し、さらに可塑剤、安定剤、ワックス、グリース、乾燥剤、硬化剤、増粘剤、分散剤、充填剤等を任意に添加して溶剤、希釈剤等で充分混連して成るものでよい。
【0013】
また、任意の基材に前記の方法等で隠蔽層(20)あるいは模様層(30)あるいはその両方を形成しておき、詳細を後記する熱ラミ法、ドライラミおよびウエットラミ法、押出ラミ法等で前記表面樹脂層(10)と貼り合わせた後に任意の基材を剥離して隠蔽層(20)あるいは模様層(30)あるいはその両方を転写する方法を用いることもできる。
【0014】
また、前記樹脂でなる表面樹脂層(10)の製造方法としてTダイ押出法を用いる場合には、前記樹脂でなる表面樹脂層(10)に直接着色して押出し製膜して隠蔽の効果を持たせることもできる。この着色方法としては、顔料を分散助剤や界面活性剤で処理した微粉末状の着色剤を使用するドライカラー法、樹脂と高濃度の顔料を溶融混連して予備分散せしめたマスターバッチペレットを作製して押出ホッパ内で着色のされていない通常の樹脂とドライブレンドするというマスターバッチ法等があるが、特にこれに限定されるものではない。顔料の種類も通常用いられているものでよいが、特に耐熱性、耐候性を考慮して酸化チタン、群青、カドミウム顔料、酸化鉄等の無機顔料が望ましい。また有機顔料でもフタロシアニン顔料、キナクリドン顔料等は使用できる。顔料の比率、色は隠蔽の度合い、意匠性を鑑みて適宜決められるものであり特に制約はない。また、模様を施す方法として、高濃度の顔料を前記樹脂とは流動特性の異なる樹脂に溶融混連して予備分散せしめたマスターバッチペレット、木粉、ガラス粉末等を添加して押出し製膜して前記樹脂でなる表面樹脂層(10)自体に模様層(30)を形成する方法がある。勿論、これらの樹脂でなる表面樹脂層(10)自体に着色隠蔽層(20)、模様層(30)を形成する方法と前記印刷方法、転写方法等を併用することもできる。
【0015】
また、場合によっては表面の手触り感やより一層の意匠感を得るため、図1に示すように、前記樹脂でなる表面樹脂層(10)の表面に凹陥部(40)でなる凹陥模様を施し、その凹陥部(40)に充填インキ(42)を埋め込み、最外表面にトップコート保護層(50)を設けることも好適に行われる。
【0016】
上記凹陥部(40)でなる凹陥模様を施す方法としては、通常の熱圧エンボス加工法でよく、何ら限定されるものではない。また、前記樹脂でなる表面樹脂層(10)の製造方法としてTダイ押出法を用いる場合には、溶融樹脂を冷却固化させるチルロールの表面に凹陥模様を施しておく方法が一般的である。また、施された凹陥部(40)にインキを埋め込み、最外表面にトップコート保護層(50)を設けることも好適に行われるが、これらの方法は従来の塩化ビニル樹脂製化粧シートで行われているワイピング処理およびトップコート処理で何ら問題はない。
【0017】
また、上記凹陥模様を有する化粧シート(1)は、表面樹脂層(10)に、ガラス転移温度が−20℃以上−15℃以下で、かつビカット軟化温度が130℃以上140℃以下であるポリプロピレンを主成分とする樹脂を用いることにより、前記の利点に加えて凹陥部(40)でなる凹陥模様の消失、変形の無い化粧シート(1)を得ることができる。ビカット軟化温度が130℃未満のものは130℃のグリセリン液に30秒間浸漬すると凹陥模様の変形が生じる。
【0018】
以上のように、本発明の化粧シートの一例として、前記樹脂でなる表面樹脂層(10)の裏面に模様層(30)および隠蔽層(20)を施し、さらに前記樹脂でなる表面樹脂層(10)の表面に凹陥模様を施してその凹陥部(40)に充填インキ(42)を埋め込み、最外表面にトップコート保護層(50)を設けた単層型の化粧シート(1)とするものである。
【0019】
また、場合によってはある特定の物性を重視するため、あるいは立体感、重厚感を出してより一層の高級感を得るため、図2に示すように、上記表面樹脂層(10)を、前記ポリプロピレンを主成分とする樹脂を用いた裏面樹脂層(12)に積層する2層型の化粧シート(2)とすることもできる。
【0020】
この表面樹脂層(10)を裏面樹脂層(12)に積層する方法としては、熱および圧力をかけて貼り合わせる熱ラミ法、接着剤を介して貼り合わせるドライラミおよびウエットラミ方法、また裏面樹脂層(12)を基材としてその上に、表面樹脂層(10)のための樹脂をTダイから溶融押出する押出ラミ方法、両方の樹脂をTダイから溶融押出する共押出方法等があり、何らそれに限定されるものではない。
【0021】
前述したように、少なくとも表面樹脂層(10)の樹脂として、ガラス転移温度が−20℃以上−15℃以下であり、かつビカット軟化温度が130℃以上140℃以下であるポリプロピレンを主成分とする樹脂を用いるが、裏面樹脂層(12)の樹脂として用いることもできるがこの限りではなく、一例を挙げると請求項1に記載されている以外のポリプロピレン、ポリエチレン、エチレン酢酸ビニル共重合体、エチレンビニルアルコール共重合体、ポリスチレン、ABS、ポリメタクリル酸メチル、ポリアクリル酸メチル、ポリアクリル酸ブチル、ポリ酢酸ビニル、ポリビニルアルコール、ポリビニルブチラール、ポリビニルアセタール、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、ポリカーボネート、ポリウレタン、ポリアミド、ナイロン6、ナイロン66等がある。
【0022】
このように2層型の化粧シート(2)においても、必要に応じて隠蔽層(20)、模様層(30)および凹陥部(40)凹陥模様およびトップコート保護層(50)を施すことができる。これらの形成方法は前記の方法で何ら問題はない。なお、凹陥模様を施す場合は凹陥模様を有する表面樹脂層(10)にガラス転移温度が−20℃以上−15℃以下であり、かつビカット軟化温度が130℃以上140℃以下であるポリプロピレンを主成分とする樹脂を用いる。その理由は前記の通り凹陥模様の消失、変形の無い2層型の化粧シート(2)を得るためである。
【0023】
また、図3に示すように、図2に示す裏面樹脂層(12)に代わり、上記各樹脂に無機顔料等を分散させた隠蔽層(20)を兼ねた裏面樹脂層(12)とし、その表面に模様層(30)を施し、その模様層(30)面に表面樹脂層(10)を貼り合わせ、さらにこの表面樹脂層(10)の表面にに凹陥模様を施してその凹陥部(40)に充填インキ(42)を埋め込み、最外表面にトップコート保護層(50)を設けた本発明に係わる2層型の化粧シート(2)とすることができる。
【0024】
以上のように、裏面樹脂層(12)に表面樹脂層(10)を積層した2層型の化粧シート(2)に加え、これらの層をさらに付加し、3層型以上の多層型の化粧シートとすることもできる。
【0025】
【実施例】
次に本発明を実施例により、本発明を具体的に説明する。
参考例1>
ガラス転移温度が−20℃、ビカット軟化温度が140℃のポリプロピレンに無機顔料を6重量%添加して隠蔽性を付与した厚さ70μmのシートの表面にコロナ処理を施した後、グラビア法によりウレタン系のインキを用いて模様を施し、さらにグラビア法によりウレタン系のアンカーコート剤を1g/m塗布、加熱乾燥して裏面樹脂層(12)となるシートを得た。前記の透明ポリプロピレン(ガラス転移温度:−20℃、ビカット軟化温度:140℃)をTダイより凹陥模様の施されたチルロールとゴムロールとの間に前記裏面樹脂層(12)となるシートを介して厚さ70μmで押出し表面樹脂層(10)とし、その表面への凹陥模様付与とラミネートを同時に行い、凹陥部(40)にワイピングインキを埋め込み充填インキ(42)とし、さらに最外表面にウレタン系のトップコート液を5g/m塗布してトップコート保護層(50)とした図3に示すような2層型の化粧シート(2)を得た。
【0026】
参考例2>
ポリエチレンテレフタレートに無機顔料を6重量%添加して隠蔽性を付与した厚さ50μmの裏面樹脂層(12)となるシートに実施例1と同様の模様を施し、同様の方法でウレタン系の接着剤を5g/m塗布、加熱乾燥させた後、厚さ70μmの実施例1の透明ポリプロピレン(ガラス転移温度:−20℃、ビカット軟化温度:140℃)を用いた表面樹脂層(10)とドライラミネートした。このラミネートシートに熱圧エンボス加工法により表面樹脂層(10)であるポリプロピレンシート側に凹陥模様を施し、実施例1と同様のワイピング、トップコート処理を施して図3に示すような2層型の化粧シート(2)を得た。
【0027】
〈比較例1〉
ガラス転移温度が−5℃、ビカット軟化温度が150℃のポリプロピレンを用いた他は実施例1と同様の方法で2層型の化粧シートを得た。
【0028】
〈比較例2〉
ガラス転移温度が−25℃、ビカット軟化温度が100℃のポリプロピレンを用いた他は実施例2と同様の方法で2層型の化粧シートを得た。
【0029】
〈比較例3〉
着色された厚さ70μmの塩化ビニル樹脂シート上にグラビア法により塩酢ビ系のインキを用いて模様を印刷したシートと厚さ70μmの透明の塩化ビニルシートをダブリングエンボス法によりエンボス付与と同時に熱によりラミネートし、実施例1と同様にワイピングインキを埋め込み、トップコートを施した。
【0030】
このように参考例1、2、比較例1、2、3で得られた各化粧シートの耐熱性評価として、130℃のグリセリン液に30秒間浸漬前後の凹陥模様の変形度を測定した。
また、各化粧シートを木質ボードに貼り、Vカット加工を施した後、−5℃の恒温室に12時間放置してその雰囲気下で90度に折り曲げた時の折り曲げ部の割れ、白化を観察した。
また、各化粧シートを木質ボードに貼り、ルータでくり抜き加工を施した際の切断面のバリの有無を観察した。
さらにまた、各化粧シートを燃焼試験に供試し、塩素ガス発生の有無を測定した。これらの評価結果を表1に示した。
【0031】
【表1】

Figure 0004576640
【0032】
表1からも明らかなように、参考例1および2で得られた本発明の一事例である2層型の化粧シート(2)は、脱塩化ビニル化粧シートであることは言うまでもなく、耐熱性、Vカット加工性、ルータ切削性も優れたものであった。
【0033】
これに対して、比較例1で得られたシートはVカット加工で折り曲げ部に割れが発生した。また、比較例2で得られたシートは耐熱試験で凹陥部の変形がみられ、ルータ切削加工で切断面に著しいバリが生じた。また、比較例3は塩化ビニル製のため燃焼試験で塩素ガスが発生し、耐熱試験でも凹陥部の変形がみられるものであった。
【0034】
【発明の効果】
本発明は以上の構成であるから、下記に示す如き効果がある。即ち、少なくとも表面樹脂層に、ガラス転移温度が−20℃以上−15℃以下であり、かつビカット軟化温度が130℃以上140℃以下あるポリプロピレンを主成分とする樹脂を用いた化粧シートとし、塩化ビニル樹脂を一切使用しない化粧シートとしたので、廃棄物に係わる環境問題の心配がなく、かつ塩化ビニル製と同等以上の物性が得られる。特にVカット適性およびルータ切削性を有して、かつ低コストな化粧シートを得ることができる。
【0035】
また、前記表面樹脂層となるポリプロピレンを主成分とする樹脂層に、凹陥模様を施した化粧シートとしたものは、高温雰囲気下でもその凹陥模様の変形および消失の無い化粧シートとすることができる。
【0036】
従って本発明は、木質系ボード類、無機系ボード類、金属板等の表面に接着剤で貼り合わせて化粧板とする化粧シートとしての用途において、優れた実用上の効果を発揮する。
【図面の簡単な説明】
【図1】本発明の一実施の形態を示す単層型の化粧シートを側断面で表した説明図である。
【図2】本発明の一実施の形態を示す2層型の化粧シートを側断面で表した説明図である。
【図3】本発明の一実施の形態を示す他の2層型の化粧シートを側断面で表した説明図である。
【符号の説明】
1‥‥単層型の化粧シート
2‥‥2層型の化粧シート
10‥‥表面樹脂層
12‥‥裏面樹脂層
20‥‥隠蔽層
30‥‥模様層
40‥‥凹陥部
42‥‥充填インキ
50‥‥トップコート保護層[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a decorative sheet that is used as a decorative sheet by being bonded to the surface of a wooden board, an inorganic board, a metal plate or the like with an adhesive.
[0002]
[Prior art]
Conventionally, as a decorative sheet used for the above-mentioned use, it has appropriate flexibility, abrasion resistance, scratch resistance, chemical resistance, weather resistance, and the like, and further suitable for bending processing such as V-cut processing and router processing. The most common sheet is a vinyl chloride resin sheet having excellent post-processability such as cutting suitability.
[0003]
However, in recent years, vinyl chloride resin has become a cause of generation of hydrogen chloride gas and dioxin which is a highly toxic substance that causes acid rain and incinerator corrosion in waste treatment after use, that is, incineration. It has become a problem from the viewpoint of environmental protection related to waste disposal. In addition, the decorative sheet is often provided with a concave pattern on the surface, but the conventional vinyl chloride resin sheet has a drawback that the concave pattern disappears when left in an atmosphere of about 100 ° C. for a long time. Under such circumstances, a decorative sheet using a resin replacing the vinyl chloride resin has been demanded.
[0004]
Therefore, decorative sheets using resins and copolymers such as polyethylene, polypropylene, polyethylene terephthalate, ethylene-vinyl alcohol, and acrylic have been proposed as resins that replace vinyl chloride resins. However, it has the appropriate flexibility, abrasion resistance, scratch resistance, chemical resistance, weather resistance, etc. of conventional vinyl chloride resin, and is also suitable for bending such as V-cut processing and cutting processing such as router processing. However, there is still no decorative sheet that can be provided at a low cost and that has a concave pattern on the surface and that does not disappear even at high temperatures.
[0005]
[Problems to be solved by the invention]
The present invention solves such problems of the prior art, and the problem is that using a material other than vinyl chloride resin, moderate flexibility, wear resistance, scratch resistance, chemical resistance In addition, it has the same or better properties than conventional decorative sheets made of vinyl chloride resin, in terms of various physical properties such as weather resistance, bending workability such as V-cutting, and post-workability such as cutting workability such as router processing. The object is to provide an inexpensive decorative sheet. Furthermore, in the decorative sheet having a concave pattern on the surface, another object is to provide a decorative sheet in which the concave pattern does not disappear even in an atmosphere of about 100 ° C.
[0006]
[Means for Solving the Invention]
In order to achieve the above object in the present invention, in the invention of claim 1, at least the back surface resin layer, the pattern layer, the surface resin layer provided with the recessed pattern in which the filling ink is embedded in the recessed part, and the top coat protection In the decorative sheet including a layer, the back surface resin layer and the front surface resin layer are mainly composed of polypropylene having a glass transition temperature of -20 ° C to -15 ° C and a Vicat softening temperature of 130 ° C to 140 ° C. it is obtained by a decorative sheet, characterized in Rukoto such a resin to be.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is an explanatory view showing an example of a single-layer decorative sheet in a side section.
As an example of the decorative sheet of the present invention, as shown in FIG. 1, at least the surface resin layer (10) is made of a transparent resin, and the resin has a glass transition temperature of −20 ° C. or more and −15 ° C. or less, and 1. A single-layer decorative sheet (1) comprising a resin mainly composed of polypropylene having a Vicat softening temperature of 130 ° C. or higher and 140 ° C. or lower.
[0009]
The reason is that, as described above, various properties such as appropriate flexibility, abrasion resistance, scratch resistance, chemical resistance, weather resistance, etc. as physical properties required for the surface resin layer (10) of the decorative sheet (1). Polypropylene is considered to be one of the most balanced resins in consideration of physical properties, bending workability such as V-cutting, post-processing suitability such as cutting workability such as router processing, and low cost. However, there is no limitation in the case of polypropylene, and those having a glass transition temperature exceeding −15 ° C. have difficulty in suitability for V-cutting in a low-temperature atmosphere. Specifically, V-cut processing in an atmosphere at −5 ° C. Will cause cracking and whitening. Moreover, when the Vicat softening point is less than 130 ° C., burrs are generated in the cross section during router cutting. Furthermore, it is because the new problem that shrinkage | contraction will arise if it immerses in a glycerol liquid of 130 degreeC for 30 second. Among these, it is thought that the heat generated by the friction and shear stress between the router bit and the decorative material is the cause of the deterioration of the router cutting suitability.
[0010]
As a method for producing the surface resin layer (10) made of the resin, known methods such as a hot press method, a calender method, a T-die extrusion method, and an inflation extrusion method may be used. In general, a polypropylene sheet is a T-die extrusion method. Are preferably used. In that sense, the T-die extrusion method is preferred, but is not limited at all.
[0011]
In addition, as shown in FIG. 1, a woody board, an inorganic board, and a concealing layer (20) for preventing the metal plate from being seen from the surface, a grain pattern, a stone pattern, a sand pattern, It is also preferable to apply a pattern layer (30) such as an abstract pattern.
[0012]
As a method for forming these concealing layer (20) and pattern layer (30), gravure printing, intaglio printing, flexographic printing, silk printing, electrostatic printing on the front surface or back surface of the surface resin layer (10) or both, A known printing method such as inkjet printing is common, but is not necessarily limited thereto. In addition, the ink used is also known, that is, a colorant such as a dye or pigment, or an extender pigment is added to the vehicle, and further, a plasticizer, a stabilizer, a wax, a grease, a desiccant, a curing agent, a thickener, a dispersant, A filler or the like may be arbitrarily added, and the mixture may be sufficiently mixed with a solvent, a diluent or the like.
[0013]
Further, a concealing layer (20) or a patterned layer (30) or both are formed on an arbitrary base material by the above-described method, etc. It is also possible to use a method in which an arbitrary base material is peeled off after being bonded to the surface resin layer (10) and the concealing layer (20) and / or the pattern layer (30) is transferred.
[0014]
When the T-die extrusion method is used as a method for producing the surface resin layer (10) made of the resin, the surface resin layer (10) made of the resin is directly colored and extruded to form a concealing effect. You can also have it. This coloring method includes a dry color method using a fine powdery colorant obtained by treating a pigment with a dispersion aid or a surfactant, and a master batch pellet in which a resin and a high-concentration pigment are melt-mixed and pre-dispersed. There is a masterbatch method or the like in which the material is prepared and dry blended with an ordinary resin not colored in an extrusion hopper, but is not particularly limited thereto. The types of pigments may be those usually used, but inorganic pigments such as titanium oxide, ultramarine blue, cadmium pigment, iron oxide and the like are particularly desirable in consideration of heat resistance and weather resistance. Also, organic pigments such as phthalocyanine pigments and quinacridone pigments can be used. The ratio and color of the pigment are appropriately determined in view of the degree of concealment and design properties, and are not particularly limited. Also, as a patterning method, extrusion is performed by adding master batch pellets, wood powder, glass powder, etc., in which a high-concentration pigment is melt-mixed in a resin having different flow characteristics from the resin and pre-dispersed. There is a method of forming a pattern layer (30) on the surface resin layer (10) itself made of the resin. Of course, the method of forming the colored concealing layer (20) and the pattern layer (30) on the surface resin layer (10) itself made of these resins can be used in combination with the printing method and the transfer method.
[0015]
Further, in some cases, in order to obtain a touch feeling on the surface and a further design feeling, as shown in FIG. 1, the surface of the surface resin layer (10) made of the resin is provided with a recessed pattern made of a recessed portion (40). The filling ink (42) is embedded in the recessed portion (40), and the top coat protective layer (50) is preferably provided on the outermost surface.
[0016]
The method for applying the concave pattern formed by the concave portion (40) may be a normal hot-pressure embossing method, and is not limited at all. Moreover, when using T-die extrusion method as a manufacturing method of the surface resin layer (10) which consists of said resin, the method of giving a concave pattern on the surface of the chill roll which cools and solidifies molten resin is common. It is also preferable to embed ink in the applied recess (40) and to provide a topcoat protective layer (50) on the outermost surface. These methods are performed with a conventional decorative sheet made of vinyl chloride resin. There is no problem in the wiping process and the top coat process.
[0017]
Further, the decorative sheet (1) having the concave pattern has a polypropylene resin having a glass transition temperature of -20 ° C to -15 ° C and a Vicat softening temperature of 130 ° C to 140 ° C on the surface resin layer (10). the by using a resin as a main component, loss of recess pattern made of recessed portions in addition to the advantages (40), can be obtained decorative sheet (1) without deformation. When the Vicat softening temperature is less than 130 ° C., the concave pattern is deformed when immersed in a glycerol solution at 130 ° C. for 30 seconds.
[0018]
As described above, as an example of the decorative sheet of the present invention, the pattern layer (30) and the concealing layer (20) are applied to the back surface of the surface resin layer (10) made of the resin, and the surface resin layer ( 10) A single-layer decorative sheet (1) having a concave pattern on the surface and embedding a filling ink (42) in the concave portion (40) and having a topcoat protective layer (50) on the outermost surface. Is.
[0019]
In some cases, in order to emphasize certain physical properties, or in order to obtain a higher-class feeling by providing a three-dimensional feeling and profound feeling, as shown in FIG. It can also be set as the two-layer type | mold decorative sheet (2) laminated | stacked on the back surface resin layer (12) using resin which has as a main component.
[0020]
As a method of laminating the surface resin layer (10) on the back surface resin layer (12), a heat lamination method in which heat and pressure are applied, a dry lamination method and a wet lamination method in which bonding is performed using an adhesive, a back surface resin layer ( 12) as a base material, and there is an extrusion lamination method in which the resin for the surface resin layer (10) is melt-extruded from a T-die, a co-extrusion method in which both resins are melt-extruded from a T-die, etc. It is not limited.
[0021]
As described above, at least the resin of the surface resin layer (10) is mainly composed of polypropylene having a glass transition temperature of -20 ° C to -15 ° C and a Vicat softening temperature of 130 ° C to 140 ° C. Although resin is used, it can be used as a resin for the back surface resin layer (12), but is not limited to this. For example, polypropylene, polyethylene, ethylene vinyl acetate copolymer other than those described in claim 1, ethylene Vinyl alcohol copolymer, polystyrene, ABS, polymethyl methacrylate, polymethyl acrylate, polybutyl acrylate, polyvinyl acetate, polyvinyl alcohol, polyvinyl butyral, polyvinyl acetal, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, poly Boneto, some polyurethanes, polyamides, nylon 6, nylon 66 and the like.
[0022]
Thus, also in the two-layer decorative sheet (2), the concealing layer (20), the pattern layer (30) , the concave pattern of the concave part (40) and the top coat protective layer (50) are applied as necessary. Can do. These forming methods have no problem with the above-described methods. When the concave pattern is applied, the surface resin layer (10) having the concave pattern is mainly made of polypropylene having a glass transition temperature of -20 ° C to -15 ° C and a Vicat softening temperature of 130 ° C to 140 ° C. Resin used as a component is used. The reason for this is to obtain a two-layer decorative sheet (2) that is free from the disappearance and deformation of the concave pattern as described above.
[0023]
Further, as shown in FIG. 3, instead of the back surface resin layer (12) shown in FIG. 2, a back surface resin layer (12) also serving as a concealing layer (20) in which an inorganic pigment or the like is dispersed in each of the above resins, A pattern layer (30) is applied to the surface, and a surface resin layer (10) is bonded to the surface of the pattern layer (30), and a recess pattern is applied to the surface of the surface resin layer (10) to form the recess (40 ) Is filled with the filling ink (42), and the top coat protective layer (50) is provided on the outermost surface, whereby a two-layer decorative sheet (2) according to the present invention can be obtained.
[0024]
As described above, in addition to the two-layer type decorative sheet (2) in which the front surface resin layer (10) is laminated on the back surface resin layer (12), these layers are further added to form a three-layer or more multi-layer type decorative sheet. It can also be a sheet.
[0025]
【Example】
Next, the present invention will be specifically described by way of examples.
< Reference Example 1>
After applying corona treatment to the surface of a 70 μm thick sheet with 6% by weight of an inorganic pigment added to polypropylene having a glass transition temperature of −20 ° C. and a Vicat softening temperature of 140 ° C., urethane is obtained by a gravure method. A pattern was formed using a system ink, and further a 1 g / m 2 urethane anchor coating agent was applied by a gravure method and dried by heating to obtain a sheet to be a back resin layer (12). The transparent polypropylene (glass transition temperature: −20 ° C., Vicat softening temperature: 140 ° C.) is interposed between a chill roll and a rubber roll, which are recessed from the T-die, through a sheet that forms the back resin layer (12). Extruded surface resin layer (10) with a thickness of 70μm, concave pattern on the surface and lamination are simultaneously performed, wiping ink is embedded in the concave part (40) to make filling ink (42), and urethane-based on the outermost surface A top coat solution of 5 g / m 2 was applied to obtain a top coat protective layer (50) to obtain a two-layer decorative sheet (2) as shown in FIG.
[0026]
< Reference Example 2>
The same pattern as in Example 1 is applied to a sheet to be a backside resin layer (12) having a thickness of 50 μm obtained by adding 6% by weight of an inorganic pigment to polyethylene terephthalate to provide a concealing property. After applying 5 g / m 2 and heating and drying, the surface resin layer (10) using the transparent polypropylene of Example 1 (glass transition temperature: −20 ° C., Vicat softening temperature: 140 ° C.) having a thickness of 70 μm and dry Laminated. A two-layer type as shown in FIG. 3 is formed by applying a concave pattern on the side of the polypropylene sheet, which is the surface resin layer (10), to the laminate sheet by hot-pressure embossing, and performing the same wiping and topcoat treatment as in Example 1. A decorative sheet (2) was obtained.
[0027]
<Comparative example 1>
A two-layer decorative sheet was obtained in the same manner as in Example 1 except that polypropylene having a glass transition temperature of −5 ° C. and a Vicat softening temperature of 150 ° C. was used.
[0028]
<Comparative example 2>
A two-layer decorative sheet was obtained in the same manner as in Example 2 except that polypropylene having a glass transition temperature of −25 ° C. and a Vicat softening temperature of 100 ° C. was used.
[0029]
<Comparative Example 3>
A colored sheet of 70 μm thick vinyl chloride resin sheet printed with a pattern using a vinyl chloride-based ink by a gravure method and a transparent vinyl chloride sheet of 70 μm thickness are heated simultaneously with embossing by a doubling embossing method. And wiping ink was embedded in the same manner as in Example 1 and a top coat was applied.
[0030]
Thus, as a heat resistance evaluation of each decorative sheet obtained in Reference Examples 1 and 2 and Comparative Examples 1, 2, and 3, the degree of deformation of the recessed pattern before and after being immersed in a glycerol liquid at 130 ° C. for 30 seconds was measured.
In addition, after each decorative sheet was pasted on a wooden board, V-cut processed, left in a thermostatic chamber at -5 ° C for 12 hours and bent at 90 degrees in that atmosphere, the cracks and whitening of the bent portion were observed. did.
Also, each decorative sheet was affixed to a wooden board, and the presence or absence of burrs on the cut surface was observed when it was cut out by a router.
Furthermore, each decorative sheet was subjected to a combustion test, and the presence or absence of generation of chlorine gas was measured. The evaluation results are shown in Table 1.
[0031]
[Table 1]
Figure 0004576640
[0032]
As is clear from Table 1, it is needless to say that the two-layer decorative sheet (2), which is an example of the present invention obtained in Reference Examples 1 and 2, is a dechlorinated vinyl decorative sheet. The V-cut processability and router-cutability were also excellent.
[0033]
On the other hand, the sheet | seat obtained in the comparative example 1 generate | occur | produced the crack in the bending part by V cut process. In addition, the sheet obtained in Comparative Example 2 was deformed in the recessed portion in the heat resistance test, and significant burrs were generated on the cut surface by router cutting. Further, since Comparative Example 3 was made of vinyl chloride, chlorine gas was generated in the combustion test, and deformation of the recessed portion was observed in the heat resistance test.
[0034]
【The invention's effect】
Since this invention is the above structure, there exist the following effects. That is, a decorative sheet using a resin mainly composed of polypropylene having a glass transition temperature of −20 ° C. to −15 ° C. and a Vicat softening temperature of 130 ° C. to 140 ° C. at least on the surface resin layer, Since it is a decorative sheet that does not use any vinyl resin, there is no concern about environmental problems related to waste, and physical properties equivalent to or higher than those of vinyl chloride can be obtained. In particular, a low-cost decorative sheet having V-cut suitability and router cutting ability can be obtained.
[0035]
Further, a decorative sheet in which a resin layer mainly composed of polypropylene serving as the surface resin layer is provided with a concave pattern can be a decorative sheet without deformation and disappearance of the concave pattern even in a high-temperature atmosphere. .
[0036]
Therefore, the present invention exerts an excellent practical effect in the use as a decorative sheet which is bonded to the surface of a wooden board, an inorganic board, a metal plate or the like with an adhesive to form a decorative board.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing a single-layer decorative sheet in a side cross section according to an embodiment of the present invention.
FIG. 2 is an explanatory view showing a two-layer decorative sheet in a side cross section according to an embodiment of the present invention.
FIG. 3 is an explanatory view showing another two-layer type decorative sheet showing the embodiment of the present invention in a sectional side view.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Single layer type decorative sheet 2 ... Double layer type decorative sheet 10 ... Surface resin layer 12 ... Back surface resin layer 20 ... Concealing layer 30 ... Pattern layer 40 ... Recessed portion 42 ... Filling ink 50 ... Topcoat protective layer

Claims (1)

少なくとも裏面樹脂層、模様層、凹陥部に充填インキが埋め込まれた凹陥模様が施された表面樹脂層、トップコート保護層を含む化粧シートにおいて、該裏面樹脂層および該表面樹脂層が、ガラス転移温度が−20℃以上−15℃以下で、かつビカット軟化温度が130℃以上140℃以下であるポリプロピレンを主成分とする樹脂でることを特徴とする化粧シート。In a decorative sheet including at least a back surface resin layer, a pattern layer, a surface resin layer having a recessed pattern in which a filling ink is embedded in a recessed portion, and a topcoat protective layer, the back surface resin layer and the surface resin layer are made of glass transition decorative sheet temperature at -20 ° C. or higher -15 ° C. or less, and the Vicat softening temperature is characterized Rukoto such a resin composed mainly of polypropylene is 130 ° C. or higher 140 ° C. or less.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07102126A (en) * 1993-08-12 1995-04-18 Tosoh Corp Polypropylene resin composition
JPH083380A (en) * 1994-06-22 1996-01-09 Kyowa Leather Cloth Co Ltd Decorative sheet using polyolefin-based resin composition
JPH08174778A (en) * 1994-12-22 1996-07-09 Kyowa Leather Cloth Co Ltd Laminated molded product
JPH08259751A (en) * 1995-03-22 1996-10-08 Mitsubishi Chem Corp Propylene-based resin composition
JPH09123008A (en) * 1995-10-30 1997-05-13 Shin Etsu Polymer Co Ltd Cutting work method for thermoplastic resin moldings
JPH10101812A (en) * 1996-09-27 1998-04-21 Rp Topla Ltd Synthetic resin molded material for woodworking and laminated material

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61233033A (en) * 1985-04-09 1986-10-17 Mitsui Petrochem Ind Ltd Polyolefin composition
JPH09226071A (en) * 1996-02-22 1997-09-02 Idemitsu Petrochem Co Ltd Decorative film/sheet and decorative material
JP3791717B2 (en) * 1996-10-04 2006-06-28 大日本印刷株式会社 Decorative sheet

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07102126A (en) * 1993-08-12 1995-04-18 Tosoh Corp Polypropylene resin composition
JPH083380A (en) * 1994-06-22 1996-01-09 Kyowa Leather Cloth Co Ltd Decorative sheet using polyolefin-based resin composition
JPH08174778A (en) * 1994-12-22 1996-07-09 Kyowa Leather Cloth Co Ltd Laminated molded product
JPH08259751A (en) * 1995-03-22 1996-10-08 Mitsubishi Chem Corp Propylene-based resin composition
JPH09123008A (en) * 1995-10-30 1997-05-13 Shin Etsu Polymer Co Ltd Cutting work method for thermoplastic resin moldings
JPH10101812A (en) * 1996-09-27 1998-04-21 Rp Topla Ltd Synthetic resin molded material for woodworking and laminated material

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