JP3913060B2 - Printed resin film for laminating high-definition decorative board excellent in processability and high-definition decorative board laminated with the resin film - Google Patents
Printed resin film for laminating high-definition decorative board excellent in processability and high-definition decorative board laminated with the resin film Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/24—Pressing or stamping ornamental designs on surfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44F—SPECIAL DESIGNS OR PICTURES
- B44F1/00—Designs or pictures characterised by special or unusual light effects
- B44F1/08—Designs or pictures characterised by special or unusual light effects characterised by colour effects
- B44F1/10—Changing, amusing, or secret pictures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/418—Refractive
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2451/00—Decorative or ornamental articles
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Description
【技術分野】
【０００１】
本発明は、高鮮映性化粧板積層用印刷樹脂フィルムおよびその樹脂フィルムを積層した高鮮映性化粧板に関し、より詳しくは電気冷蔵庫のドア、エアコンカバー等の家庭電化製品の外装や、鋼板製家具、エレベータ、建築物等の内装のように、特に高鮮映性の印刷模様を要求される用途に適した高鮮映性化粧板積層用樹脂フィルムおよびその樹脂フィルムを積層した高鮮映化粧板に関する。
【背景技術】
【０００２】
はじめに、本発明で言う鮮映性とは、写像鮮映性すなわち化粧面に写した正反射像の鮮明さを意味し、鮮映性の評価は財団法人日本色彩研究所製の携帯用鮮明度光沢計ＰＧＤ−４型による測定により行ったものである。
従来、各種家具類や建築内装材等に使用される高鮮映化粧板としては、
（１）基材となる樹脂層に通常の方法を用いて印刷を施し、印刷層の表面保護のために、アクリル系樹脂、ポリエステル系樹脂等のコート層を設けた化粧フィルム、
（２）基材となる樹脂層に印刷を施した後、透明な二軸延伸ポリエステルフィルムを接着剤層を介して積層した化粧フィルム、
などの化粧フィルムを、接着剤を介して亜鉛めっき鋼板、合板、またはＭＤＦなどの基板に積層したものが知られている。
【発明が解決しようとする課題】
【０００３】
しかしながら、上記（１）の化粧フィルムを積層した化粧板は、化粧フィルムの強度が不十分であるため、Ｖカット加工などを施す場合、加工時に化粧フィルムが割れたり、コーナー部のインキが剥離し易いという問題があり、Ｖカット加工などを施す用途には適していない。また、（２）の化粧フィルムを積層した化粧板は、耐汚染性、耐溶剤性などの表面物性には優れているが、表面フィルムの柔軟性に乏しく、軟化温度が高いためエンボス加工を施した場合、エンボスが入り難い。
本発明は上記の問題を解決することを目的として、従来のポリ塩化ビニル樹脂フィルムやポリオレフィン樹脂フィルムを用いた高鮮映性化粧シートの表面樹脂層にも用いられている二軸延伸ポリエステル樹脂フィルムの加工性を確保し、さらに、従来のポリ塩化ビニル樹脂フィルムやポリオレフィン樹脂フィルムを用いた高鮮映化粧シートと同等以上の印刷鮮映性を有する意匠性に優れた絵柄模様を有し、環境適性に優れ、耐汚染性、耐溶剤性などの表面物性、さらには、加工性にも優れた高鮮映化粧板積層用印刷樹脂フィルムおよびその樹脂フィルムを積層した高鮮映化粧板を提供することを課題とする。
【発明の開示】
【０００４】
請求項１の高鮮映化粧板積層用印刷樹脂フィルムは、接着樹脂層、基材樹脂層、印刷層、透明な表面樹脂層が下から順次積層された樹脂フィルムであって、
表面樹脂層が、面配向係数が０〜０．１７０で、面内屈折率の最大値と最小値の差Δｎ（ｍａｘ−ｍｉｎ）が０〜０．０５の二軸延伸ポリエチレンテレフタレート樹脂フィルムであり、
接着樹脂層と基材樹脂層の積層フィルムの基材樹脂層の上面に、表面樹脂層の下面に設けた印刷層を重ね合わせ、熱ロール間に通して圧着するとともに熱融着して積層してなることを特徴とする。
請求項２の高鮮映化粧板積層用印刷樹脂フィルムは、接着樹脂層、着色樹脂層、印刷層、基材樹脂層、透明な表面樹脂層が下から順次積層された樹脂フィルムであって、
表面樹脂層が、面配向係数が０〜０．１７０で、面内屈折率の最大値と最小値の差Δｎ（ｍａｘ−ｍｉｎ）が０〜０．０５の二軸延伸ポリエチレンテレフタレート樹脂フィルムであり、
接着樹脂層と着色樹脂層の積層フィルムの着色樹脂層面に印刷層を施し、その上に基材樹脂層を重ね合わせ、熱ロール間に通して圧着するとともに熱融着して積層し、
さらに前記基材樹脂層の上に接着剤層を介して表面樹脂層を積層してなることを特徴とする。
請求項３の高鮮映化粧板積層用印刷樹脂フィルムは、基材樹脂層、印刷層、透明な表面樹脂層が下から順次積層された樹脂フィルムであって、
表面樹脂層が、面配向係数が０〜０．１７０で、面内屈折率の最大値と最小値の差Δｎ（ｍａｘ−ｍｉｎ）が０〜０．０５の二軸延伸ポリエチレンテレフタレート樹脂フィルムであり、
基材樹脂層の上面に、表面樹脂層の下面に設けた印刷層を重ね合わせ、熱ロール間に通して圧着するとともに熱融着して積層してなることを特徴とする。
請求項４の高鮮映化粧板積層用印刷樹脂フィルムは、着色樹脂層、印刷層、基材樹脂層、透明な表面樹脂層が下から順次積層された樹脂フィルムであって、
表面樹脂層が、面配向係数が０〜０．１７０で、面内屈折率の最大値と最小値の差Δｎ（ｍａｘ−ｍｉｎ）が０〜０．０５の二軸延伸ポリエチレンテレフタレート樹脂フィルムであり、
着色樹脂層面に印刷層を施し、その上に基材樹脂層を重ね合わせ、熱ロール間に通して圧着するとともに熱融着して積層し、
さらに前記基材樹脂層の上に接着剤層を介して表面樹脂層を積層してなることを特徴とする。
請求項５の高鮮映化粧板積層用印刷樹脂フィルムは、請求項１〜４のいずれかにおいて、 前記印刷層が、絵柄印刷層である上層と、前記基材樹脂層全面を隠蔽し、かつ前記絵柄印刷層の印刷下地色を付与するベタ印刷層である下層とからなることを特徴とする。
請求項６の高鮮映化粧板積層用印刷樹脂フィルムは、請求項１〜４のいずれかにおいて、
前記印刷層が、絵柄印刷層からなることを特徴とする。
請求項７の高鮮映化粧板積層用印刷樹脂フィルムは、請求項１〜４のいずれかにおいて、
前記基材樹脂層がエンボス加工を施され、該エンボス加工により形成されたエンボス凹部にインキが充填されてなる印刷層を有することを特徴とする。
請求項８の高鮮映化粧板積層用印刷樹脂フィルムは、請求項１〜４、７のいずれかにおいて、前記基材樹脂層がポリエステル樹脂からなることを特徴とする。
請求項９の高鮮映化粧板積層用印刷樹脂フィルムは、請求項２または４において、
前記着色樹脂層が着色顔料を混練したポリエステル樹脂からなることを特徴とする。
請求項１０の高鮮映化粧板積層用印刷樹脂フィルムは、請求項８または９において、前記ポリエステル樹脂がポリブチレンテレフタレート樹脂からなることを特徴とする。
請求項１１の高鮮映化粧板積層用印刷樹脂フィルムは、請求項１０において、前記ポリブチレンテレフタレート樹脂の固有粘度（ＩＶ値）が１．０〜２．０であることを特徴とする。
請求項１２の高鮮映化粧板積層用印刷樹脂フィルムは、請求項１または３において、前記基材樹脂層がポリ塩化ビニル樹脂からなることを特徴とする。
請求項１３の高鮮映化粧板積層用印刷樹脂フィルムは、請求項１または３において、前記基材樹脂層がポリオレフィン樹脂からなることを特徴とする。
請求項１４の高鮮映化粧板積層用印刷樹脂フィルムは、請求項２または４において、前記基材樹脂層がポリ塩化ビニル樹脂からなり、前記着色樹脂層が着色顔料を混練したポリ塩化ビニル樹脂からなることを特徴とする。
請求項１５の高鮮映化粧板積層用印刷樹脂フィルムは、請求項２または４において、前記基材樹脂層がポリオレフィン樹脂からなり、前記着色樹脂層が着色顔料を混練したポリオレフィン樹脂からなることを特徴とする。
請求項１６の高鮮映化粧板は、樹脂フィルムを積層する基板の少なくとも片面に、請求項１〜１５のいずれかに記載の高鮮映化粧板積層用印刷樹脂フィルムを積層したことを特徴とする。
請求項１７の高鮮映化粧板は、請求項１６において、前記基板と前記高鮮映化粧板積層用印刷樹脂フィルムの間に接着剤層を介して積層したことを特徴とする。
請求項１８の高鮮映化粧板は、請求項１６または１７において、前記基板が金属板であることを特徴とする。
請求項１９の高鮮映化粧板は、請求項１６または１７において、前記基板が木質板であることを特徴とする。
請求項２０の高鮮映化粧板は、請求項１６または１７において、前記基板が無機質ボードであることを特徴とする。
請求項２１の高鮮映化粧板は、請求項１６または１７において、前記基板が紙質であることを特徴とする。
【発明を実施するための最良の形態】
【０００５】
本発明の発明者等は、化粧板に用いられる化粧板積層用印刷樹脂フィルムにおいて、鮮映性を高めるために用いられてきた表面樹脂層の二軸延伸ポリエステル樹脂フィルムの加工性を満足させるために鋭意検討した結果、樹脂フィルムの面配向係数を０〜０．１７０の範囲とし、さらに、樹脂フィルムの面内屈折率の最大値と最小値の差Δｎ（ｍａｘ−ｍｉｎ）を０〜０．０５の範囲とすることで樹脂フィルムの加工性を向上させることができることを見出した。
さらに、高鮮映性および意匠性に優れた絵柄模様を有し、かつ耐汚染性、耐溶剤性などの表面物性に優れた化粧板に積層する印刷可能な高鮮映樹脂フィルムについて鋭意検討した結果、接着樹脂層として共重合ポリエステルフィルムを、選択的に積層される着色樹脂層ならびに印刷下地となる基材樹脂層として、樹脂の固有粘度が１．０〜２．０のポリブチレンテレフタレートフィルムを用い、それに絵柄印刷層、または絵柄印刷層とベタ印刷層を形成し、さらに透明な表面樹脂層を下から順次積層することにより、上記の要求特性を満足する化粧板に積層する樹脂フィルムが得られることを見出した。また、基材樹脂層にエンボス加工を施してエンボス凹部を形成した後、ワイピング法を用いてエンボス凹部にインキを充填してなるワイピング印刷層を設けてもよい。
さらに、上記の樹脂フィルムを金属板、合板、無機質ボード、紙などに積層した高鮮映化粧板は、樹脂フィルムの上記の優れたフィルム物性に加えて、意匠性にも優れていることを見出した。
【０００６】
以下に本発明についてその内容を説明する。
図１は本発明の高鮮映化粧板積層用印刷樹脂フィルムの一例を示す断面図、図２R>２および図３は本発明の高鮮映化粧板積層用印刷樹脂フィルムの他の例を示す断面図、図４および図５は本発明の高鮮映化粧板の例を示す断面図である。１は高鮮映化粧板積層用印刷樹脂フィルム、２は基板、３は接着剤層、４は接着樹脂層、５は着色樹脂層、６ａは絵柄印刷層、６ｂはベタ印刷層、７は基材樹脂層、８はワイピング印刷用エンボス凹部、９はワイピング印刷層、１０は接着剤層、１１は表面樹脂層、１２は高鮮映化粧板をそれぞれ表している。
【０００７】
本発明の高鮮映化粧板積層用印刷樹脂フィルム１は、図１に示すように接着樹脂層４の上面に、基材樹脂層７が積層されており、基材樹脂層７の上面に、絵柄印刷層６ａとベタ印刷層６ｂが裏面全面に設けられた表面樹脂層１１が積層されている。
また、本発明の高鮮映化粧板積層用印刷樹脂フィルム１は、図２に示すように接着樹脂層４の上面に、絵柄印刷層６ａが施された着色樹脂層５が積層されており、その上面にエンボス加工により形成されたエンボス凹部８に、ワイピングインキが充填されたワイピング印刷層９が設けられた基材樹脂層７がさらに積層されており、その基材樹脂層７の上面に接着剤層１０を介して、表面樹脂層１１が積層されたものであってもよい。
さらに、本発明の化粧板積層用印刷樹脂フィルム１は、図３に示すように、図２R>２の化粧板積層用印刷樹脂フィルム１の着色樹脂層５に、絵柄印刷層６ａとベタ印刷層６ｂの両方が設けられていてもよい。
【０００８】
図４は、図２に示した化粧板積層用印刷樹脂フィルム１を、接着剤層３を介して基板２に積層した高鮮映化粧板１２を示す。
図５は、図３に示した化粧板積層用印刷樹脂フィルム１を、接着剤層３を介して基板２に積層した高鮮映化粧板１２を示す。
【０００９】
本発明の基材樹脂層７および着色樹脂層５の樹脂としては、従来から用いられているポリ塩化ビニル樹脂フィルムやオレフィン樹脂フィルムを用いても良いが、環境適正の観点から、ポリエステル樹脂フィルム、特に、１．０〜２．０の固有粘度（ＩＶ値）を有するポリブチレンテレフタレートフィルムを用いることが好ましい。さらに、固有粘度は製膜性の面から１．５以下、耐水経時性（耐水劣化性）の面から１．２以上であることがより好ましい。また、着色樹脂層５は上記の樹脂に押出機を用いて製膜する際に着色顔料を混練することにより得られるが、着色樹脂層５と同様に、基材樹脂層７も押出機を用いて製膜する際に、樹脂中に着色顔料を混練して着色樹脂層としてもよい。
【００１０】
絵柄印刷層６ａは、例えば、木目、石目、天然皮革の表面柄、布目、抽象柄などの模様を表現した印刷層であり、ベタ印刷層６ｂは基材樹脂層７または着色樹脂層５の全面を隠蔽し絵柄印刷層６ａの印刷下地色を与える印刷層であると共に、接着剤層１０を設けない場合は基材樹脂層７と表面樹脂層１１との熱接着性を付与する層でもある。印刷層６ａおよび６ｂを形成するインキのビヒクルとしては、例えばニトロセルロース、酢酸セルロースなどのセルロース誘導体、ポリエステルウレタン樹脂などの公知のものが使用できるが、なかでも密着性及び熱接着性の両観点からニトロセルロース−アルキド樹脂系インキが好ましい。
【００１１】
また、基材樹脂層７に選択的にエンボス加工を施してエンボス凹部８を形成した後、ワイピング印刷法を用いてエンボス凹部８にインキを充填してなるワイピング印刷層９を設ける場合、エンボス凹部８に充填されるワイピングインキとしては、塗料もしくはインキが用いられる。
【００１２】
例えば、天然樹脂またはその変成樹脂類、セルロース誘導体類、ポリエステル系樹脂、アクリル系樹脂、ポリウレタン系樹脂等の合成樹脂類をビヒクルの構成材料とし、ビヒクル中に着色顔料、体質顔料等を添加して成る塗料もしくはインキが用いられる。使用されるビヒクルとしてはウレタン２液硬化型のものが好適に用いられる。ワイピング印刷法としては、ドクターブレード法、ロールコート法など、従来から使用されているワイピング印刷法のいずれによっても良い。
【００１３】
また、基材樹脂層７に選択的にエンボス加工を施してエンボス凹部８を形成した後、ワイピング印刷法を用いてエンボス凹部８にインキを充填してなるワイピング印刷層９を設ける場合、エンボス凹部８に充填されるワイピングインキとしては、塗料もしくはインキが用いられる。
【００１４】
例えば、天然樹脂またはその変成樹脂類、セルロース誘導体類、ポリエステル系樹脂、アクリル系樹脂、ポリウレタン系樹脂等の合成樹脂類をビヒクルの構成材料とし、ビヒクル中に着色顔料、体質顔料等を添加して成る塗料もしくはインキが用いられる。使用されるビヒクルとしてはウレタン２液硬化型のものが好適に用いられる。ワイピング印刷法としては、ドクターブレード法、ロールコート法など、従来から使用されているワイピング印刷法のいずれによっても良い。
【００１５】
表面樹脂層１１としてはポリエチレンテレフタレートをはじめとするポリエステル樹脂のフィルム、ポリカーボネートフィルム、またはアクリル樹脂フィルムを用いることが好ましく、なかでも二軸延伸ポリエステルフィルムを用いることがより好ましい。このポリエステル樹脂フィルムは、可塑剤及びハロゲン属元素等を含まないポリエステル樹脂からなることを特徴とする。
【００１６】
また二軸延伸ポリエステル樹脂フィルムとしては、その面配向係数が０〜０．１７０の範囲であることが好ましく、さらに、その面内屈折率の最大値と最小値の差Δｎ（ｍａｘ−ｍｉｎ）が０〜０．０５の範囲であることが好ましい。
【００１７】
これらの面配向係数の算出方法および屈折率の測定方法については後記するが、面配向係数が０．１７０を超えると、すなわち、配向度が高くなり過ぎると加工性が著しく低下し、さらに、面内屈折率の最大値と最小値の差Δｎ（ｍａｘ−ｍｉｎ）が０．０５を超えると、すなわち、配向の面内異方性が強くなり過ぎても加工性の優劣に方向性が生じ、好ましくない。
【００１８】
接着樹脂層４の樹脂としては、エチレンテレフタレート／イソフタレート共重合体などの共重合ポリエステル樹脂を用いることが好ましい。
【００１９】
このポリエステル樹脂を構成する材料の例としては、上記の他に、以下の組成を有する共重合ポリエステル樹脂などが好適に用いられる。すなわち、樹脂を形成するソフトセグメントとして、ポリエチレングリコール、ポリテトラメチレングリコールなどのポリオキシアルキレングリコール、あるいはポリε−カプロラクトン、アゼライン酸、セバシン酸、ドデカンジオン酸、ダイマー酸などのＨＯＯＣ−［ＣＨ２］ｎ−ＣＯＯＨの分子構造を有する脂肪族ジカルボン酸と、脂肪族および／または脂環族ジオールからなる脂肪族ポリエステルなどが好適に用いられる。
【００２０】
また、樹脂を構成するハードセグメントとしては、エチレンテレフタレート、ブチレンテレフタレート、シクロヘキサンジメチレンテレフタレート、シクロヘキサンジメチレンシクロヘキサンジカルボキシレート、ブチレン２，６ナフタレンジカルボキシレートなどの芳香族および／または脂環族エステルユニットから選ばれた少なくとも１つから構成されていることが好ましい。
【００２１】
さらに、アルコール成分として、１，４ブタンジオール残基を含有していることが耐溶剤性の点で好ましく、共重合ポリエステルを形成する全アルコール成分に占める１，４ブタンジオール残基が４０モル％以上、６５モル％以下であることが好ましい。
基板とのより強い密着力が要求される場合には、接着樹脂層４の樹脂成分の一部にアイオノマー樹脂成分を含有させるとよい。この場合、アイオノマー樹脂成分を全体樹脂成分の１〜５０重量％とすることが好ましい。
【００２２】
本発明の表面樹脂層において重要な要因である、樹脂フィルムの屈折率および面配向係数は次に示す方法で求めることができる。すなわち、用いられるポリエステル樹脂フィルムの屈折率を、フィルムの長手方向に対して平行方向、９０°方向、４５°方向、１３５°方向について、さらに、面配向係数を求めるために厚さ方向についてもアッベの屈折計で測定する。そして、これらの平行方向、９０°方向、４５°方向、１３５°方向の屈折率から、面内屈折率の最大値と最小値の差Δｎ（ｍａｘ−ｍｉｎ）を求める。
さらに、面配向係数は、測定した屈折率を用いて、次式から算出する。
面配向係数＝（Ａ＋Ｂ）／２−Ｃ
Ａ：平行方向の屈折率
Ｂ：９０°方向の屈折率
Ｃ：厚さ方向の屈折率
【００２３】
図１に示す本発明の高鮮映化粧板積層用印刷樹脂フィルム１は、次のようにして作成することができる。
すなわち、共押出しにより２層フィルムとして製膜した接着樹脂層４と基材樹脂層７の積層フィルムの基材樹脂層７側の上面に、表面樹脂層１１の下面に設けた絵柄印刷層６ａとベタ印刷層６ｂからなる印刷層６を重ね合わせ、接着樹脂層４と基材樹脂層７の共押出し積層フィルムと表面樹脂層１１を重ね合せたまま１対の熱ロール間に通して挟み付けて圧着するとともに熱融着して積層し、一枚の積層フィルムを製造する。加熱しながら加圧することにより、表面樹脂層１１のベタ印刷層６ｂの面を基材樹脂層７に融着して一枚の高鮮映化粧板積層用印刷樹脂フィルム１を作るものである。
【００２４】
また、接着樹脂層４と顔料を混練した着色樹脂層５を共押出しにより２層フィルムとして製膜し、前記着色樹脂層５の上に絵柄印刷層６ａを施し、さらに、その上に基材樹脂層７を重ね合せたまま１対の熱ロール間に通して挟み付けて圧着するとともに熱融着して積層し、１枚の積層フィルムを製造する。なお、その際、前記の熱ロールとしてエンボスロールを使用することにより、積層と基材樹脂層７のエンボス加工を同時に実施することが可能で、基材樹脂層７の表面にワイピング印刷用エンボス凹部８を形成し、ワイピングインキを充填してワイピング印刷層９を設けることにより、高意匠性の絵柄模様を付与することができる。
さらに、その上に接着剤層１０を介して表面樹脂層１１を積層することによって、図２に示す高鮮映化粧板積層用印刷樹脂フィルム１を得ることができる。
そして、着色樹脂層５および基材樹脂層７が寸法安定性に優れるため、張力や熱に起因する伸縮変動を抑えることが可能となり、印刷柄とエンボス柄が同調した、高意匠性を有するエンボス化粧フィルムとすることができる。上記の積層作業やエンボス加工などの工程は、従来のポリ塩化ビニル樹脂フィルムにおけるのと同じ装置で作業することが可能である。
【００２５】
さらに、図２の着色樹脂層５の表面にベタ印刷層６ｂを設け、その上に絵柄印刷層６ａを設けた樹脂フィルムを用いることにより、図３に示すように、意匠性をより一層向上させた化粧板積層用印刷樹脂フィルム１とすることも可能である。
【００２６】
また、上記の方法によって得られた高鮮映化粧板積層用印刷樹脂フィルム１を、接着剤層３を介在させて基板２と貼合わせることにより、図４または図５に示すような高鮮映化粧板１２が得られる。基板２としては、例えば、木材単板、木材合板、パーチクルボード、ＭＤＦ等の木質板、鋼板、アルミニウム合金板、亜鉛や亜鉛−アルミニウム合金、亜鉛−コバルト−モリブデン合金などの亜鉛合金をめっきした亜鉛めっき鋼板などの金属板、または石膏ボード、珪酸カルシウムボード、石綿スレートボードなどの無機質からなるボード、紙が用いられる。
【００２７】
高鮮映化粧板積層用印刷樹脂フィルム１と基板２の貼合わせに用いられる接着剤層３の接着剤としては、一般的な接着剤、例えば、酢酸ビニル樹脂系、エチレン−ビニルアセテート樹脂系、尿素樹脂系、ウレタン樹脂系などのエマルジョン型接着剤が、火気に対して安全で、臭気もなく、価格的にも安価なため好ましく用いられる。
次に実施例により本発明をさらに詳細に説明する。
【００２８】
（実施例１ａ〜１ｇ）
厚さ２５μｍの透明二軸延伸ポリエチレンテレフタレートフィルム（帝人製）の片面に、ニトロセルロース−アルキド系インキ（昭和インク製）を用い、絵柄印刷層および着色ベタ印刷層をグラビア輪転機によりインラインにて印刷したものと、市販のポリブチレンテレフタレート樹脂（ＰＢＴ）および共重合ポリエステル樹脂（ＰＥＳ）を用いて押出製膜機により作成した厚さ７０μｍの２層未延伸フィルム（厚み比：ＰＢＴ／ＰＥＳ＝４／１）を、印刷層とＰＢＴフィルムが接するように重ねて、圧着用ロールの加熱温度：２００℃、樹脂フィルムの送り速度：２０ｍ／ｍｉｎ、圧着用ロールのニップ圧：１５ｋｇｆ／ｃｍ２ の条件で両フィルムを加熱圧着して積層し、高鮮映化粧板積層用印刷樹脂フィルムを作製した。次に、厚さ０．５ｍｍの電気亜鉛合金めっき鋼板にポリエステル系接着剤を５ｇ／ｍ２ の塗布量で塗布し、前記の高鮮映化粧板積層用印刷樹脂フィルムを、ＰＥＳ面が電気亜鉛合金めっき鋼板に接するようにして、加熱温度：２１０℃、接着圧力：１５ｋｇｆ／ｃｍ２、圧着時間：５秒の条件で加熱圧着し、化粧板を得た。
ここで、実施例１ａ〜１ｇはそれぞれ、面配向係数と面内屈折率の最大値と最小値の差Δｎ（ｍａｘ−ｍｉｎ）が表１に記載された値である透明二軸延伸ポリエチレンテレフタレートフィルムを用いた樹脂フィルムを積層した化粧板である。
【００２９】
（実施例２）
市販のポリブチレンテレフタレート樹脂（ＰＢＴ）にクリーム色顔料２０重量％を混錬した着色樹脂と共重合ポリエステル樹脂（ＰＥＳ）を押出製膜機により、厚み比：ＰＢＴ／ＰＥＳ＝４／１で作成した厚さ５０μｍの２層未延伸フィルムのＰＢＴの側の片面に、ニトロセルロース−アルキド系インキ（昭和インク製）を用い、絵柄印刷層をグラビア輪転機によりインラインにて印刷したものと、市販のＰＢＴを押出製膜機により製膜した厚さ７０μｍの透明な未延伸フィルムとを印刷面が透明未延伸フィルムと接するようにして対向させ、実施例１の加熱圧着による積層条件と同条件にて透明なＰＢＴ単層フィルム面をエンボスロール側として、エンボスロールとシリコンゴムロールからなる圧着用ロールの間に通して圧着することにより、透明なＰＢＴフィルム表面にエンボス凹部を有する３層フィルムを作成した。次いで、前記エンボス凹部を有する面に２液硬化型ウレタン系着色インキ（昭和インク製）をロールコート法によって塗工した後、ドクターブレードでエンボス凹部以外の部分に付着している着色インキを除去し、積層フィルムの表面に形成されているエンボス凹部内に着色インキを充填、固化させ、印刷樹脂フィルムを作製した。さらに、この印刷樹脂フィルムのエンボス加工面に、エポキシ−フェノール系接着剤を片面に塗布した厚さ２５μｍの透明二軸延伸ポリエチレンテレフタレートフィルム（帝人製）の接着剤塗布面を対向させ、実施例１の加熱圧着による積層条件と同条件にて、一対のシリコンゴムロールからなる圧着用ロールの間に通して圧着することにより、意匠性に優れた高鮮映化粧フィルムを作製した。次に、厚さ６ｍｍの木材合板にポリウレタン系接着剤を５０ｇ／ｍ２ の塗布量で塗布し、前記高鮮映化粧板積層用印刷樹脂フィルムを、ＰＥＳ面が木材合板と接するようにして加熱温度：１６０℃、接着圧力：１５ｋｇｆ／ｃｍ２、圧着時間：１５秒の条件で加熱圧着し、高鮮映化粧板を得た。
【００３０】
（実施例３）
実施例２と同一のＰＢＴとＰＥＳの２層未延伸フィルムの片面に、着色ベタ印刷層がＰＢＴ上に直接設けられ、さらにその上に絵柄印刷層が設けられる以外は実施例２と同一の条件で印刷した。さらに、実施例２と全く同様に、前記２層未延伸フィルムと実施例２と同一の透明なＰＢＴ未延伸フィルムを積層しながらエンボス加工を施した後ワイピング印刷を施し、印刷樹脂フィルムを作製した後、厚さ２５μｍの透明二軸延伸ポリエチレンテレフタレートフィルム（帝人製）を実施例２と同様に接着剤を介在させて積層し、意匠性に優れた高鮮映化粧フィルムを作成した。次に、厚さ８ｍｍの石膏ボードにポリウレタン系接着剤を８０ｇ／ｍ２ の塗布量で塗布し、前記高鮮映化粧板積層用印刷樹脂フィルムを加熱温度：１８０℃、接着圧力：１５ｋｇｆ／ｃｍ２、圧着時間：２０秒の条件で加熱圧着し、高鮮映化粧板を得た。
【００３１】
（実施例４）
実施例２と同様にして印刷樹脂フィルムを作製した後、この印刷樹脂フィルムのエンボス加工面に、エポキシ−フェノール系接着剤を片面に塗布した厚さ２５μｍの透明二軸延伸ポリカーボネートフィルム（帝人製）の接着剤塗布面を対向させ、実施例１の加熱圧着による積層条件と同条件で圧着することにより、意匠性に優れた高鮮映化粧フィルムを作製した。次いで、実施例２と同様にして厚さ６ｍｍの木材合板に前記高鮮映化粧板積層用印刷樹脂フィルムを加熱圧着し、高鮮映化粧板を得た。
【００３２】
（実施例５）
実施例３と同様にして印刷樹脂フィルムを作製した後、この印刷樹脂フィルムのエンボス加工面に、エポキシ−フェノール系接着剤を片面に塗布した厚さ２５μｍの透明二軸延伸アクリル樹脂フィルムの接着剤塗布面を対向させ、実施例１の加熱圧着による積層条件と同条件で圧着することにより、意匠性に優れた高鮮映化粧フィルムを作製した。次いで、厚さ５ｍｍのフェノール樹脂を含浸させたコア紙にポリウレタン系接着剤を２０ｇ／ｍ２ の塗布量で塗布し、前記高鮮映化粧板積層用印刷樹脂フィルムを加熱温度：１８０℃、接着圧力：１５ｋｇｆ／ｃｍ２、圧着時間：２０秒の条件で加熱圧着し、高鮮映化粧板を得た。
【００３３】
（実施例６）
実施例１と同一の透明二軸延伸ポリエチレンテレフタレートフィルムの片面に、実施例１と同様にして絵柄印刷層および着色ベタ印刷層を印刷したものと、市販の厚さ８０μｍのポリ塩化ビニル樹脂（ＰＶＣ）フィルムを、印刷層とＰＶＣフィルムが接するように重ねて、圧着用ロールの加熱温度：１８０℃、樹脂フィルムの送り速度：２０ｍ／ｍｉｎ、圧着用ロールのニップ圧：１５ｋｇｆ／ｃｍ２ の条件で両フィルムを加熱圧着して積層し、高鮮映化粧板積層用印刷樹脂フィルムを作製した。次に、実施例１と同一の電気亜鉛合金めっき鋼板にポリエステル系接着剤を５ｇ／ｍ２ の塗布量で塗布し、前記の高鮮映化粧板積層用印刷樹脂フィルムを、ＰＶＣ面が電気亜鉛合金めっき鋼板に接するようにして、実施例１と同様にして加熱圧着し、化粧板を得た。
【００３４】
（実施例７）
市販のＰＶＣに青色顔料１５重量％を混錬した着色樹脂を押出製膜機により製膜した厚さ５０μｍの未延伸フィルムの片面に、実施例２と同様にして絵柄印刷層を印刷したものと、市販のＰＶＣを押出製膜機により製膜した厚さ８０μｍの透明な未延伸フィルムとを印刷面が透明未延伸フィルムと接するようにして対向させ、実施例６の加熱圧着による積層条件と同条件にて透明なＰＶＣ単層フィルム面をエンボスロール側として、エンボスロールとシリコンゴムロールからなる圧着用ロールの間に通して圧着することにより、透明なＰＶＣフィルム表面にエンボス凹部を有する２層フィルムを作成した。次いで、前記エンボス凹部を有する面に実施例２と同様にしてエンボス凹部内に着色インキを充填、固化させ、印刷樹脂フィルムを作製した。さらに、この印刷樹脂フィルムのエンボス加工面に、エポキシ−フェノール系接着剤を片面に塗布した厚さ２５μｍの透明二軸延伸ポリエチレンテレフタレートフィルム（帝人製）の接着剤塗布面を対向させ、実施例１の加熱圧着による積層条件と同条件にて、一対のシリコンゴムロールからなる圧着用ロールの間に通して圧着することにより、意匠性に優れた高鮮映化粧フィルムを作製した。次に、実施例２と同一の木材合板にポリウレタン系接着剤を５０ｇ／ｍ２ の塗布量で塗布し、前記高鮮映化粧板積層用印刷樹脂フィルムを、着色ＰＶＣ面が木材合板と接するようにして実施例２と同様にして加熱圧着し、化粧板を得た。
【００３５】
（実施例８）
実施例１と同一の透明二軸延伸ポリエチレンテレフタレートフィルムの片面に、実施例１と同様にして絵柄印刷層および着色ベタ印刷層を印刷したものと、市販の厚さ６０μｍのポリプロピレン樹脂（ＰＰ）フィルムを、印刷層とＰＰフィルムが接するように重ねて、圧着用ロールの加熱温度：１５０℃、樹脂フィルムの送り速度：２０ｍ／ｍｉｎ、圧着用ロールのニップ圧：１５ｋｇｆ／ｃｍ２ の条件で両フィルムを加熱圧着して積層し、高鮮映化粧板積層用印刷樹脂フィルムを作製した。次に、実施例１と同一の電気亜鉛合金めっき鋼板にポリエステル系接着剤を５ｇ／ｍ２ の塗布量で塗布し、前記の高鮮映化粧板積層用印刷樹脂フィルムを、ＰＰ面が電気亜鉛合金めっき鋼板に接するようにして、実施例１と同様にして加熱圧着し、化粧板を得た。
【００３６】
（実施例９）
市販のＰＰに青色顔料１５重量％を混錬した着色樹脂を押出製膜機により製膜した厚さ５０μｍの未延伸フィルムの片面に、実施例２と同様にして絵柄印刷層を印刷したものと、市販のＰＰを押出製膜機により製膜した厚さ７５μｍの透明な未延伸フィルムとを印刷面が透明未延伸フィルムと接するようにして対向させ、実施例８の加熱圧着による積層条件と同条件にて透明なＰＰ単層フィルム面をエンボスロール側として、エンボスロールとシリコンゴムロールからなる圧着用ロールの間に通して圧着することにより、透明なＰＰフィルム表面にエンボス凹部を有する２層フィルムを作成した。次いで、前記エンボス凹部を有する面に実施例２と同様にしてエンボス凹部内に着色インキを充填、固化させ、印刷樹脂フィルムを作製した。さらに、この印刷樹脂フィルムのエンボス加工面に、エポキシ−フェノール系接着剤を片面に塗布した厚さ２５μｍの透明二軸延伸ポリエチレンテレフタレートフィルム（帝人製）の接着剤塗布面を対向させ、実施例１の加熱圧着による積層条件と同条件にて、一対のシリコンゴムロールからなる圧着用ロールの間に通して圧着することにより、意匠性に優れた高鮮映化粧フィルムを作製した。次に、実施例２と同一の木材合板にポリウレタン系接着剤を５０ｇ／ｍ２ の塗布量で塗布し、前記高鮮映化粧板積層用印刷樹脂フィルムを、着色ＰＰ面が木材合板と接するようにして実施例２と同様にして加熱圧着し、化粧板を得た。
【００３７】
（樹脂フィルムの特性評価）
実施例１ａ〜１ｇ、２、３、４、５、６、７、８および９で作成した高鮮映化粧板を、下記の特性について評価した。
【００３８】
（樹脂フィルムの加工性）
本発明の高鮮映化粧板積層用印刷樹脂フィルムの加工性の良否は、実施例１ａ〜１ｇで作成した、化粧フィルムを金属板に積層した高鮮映化粧金属板に、ＪＩＳ Ｚ ２２４８（金属材料曲げ試験方法）に準拠して、０Ｔ曲げ加工を施し、曲げ加工部のフィルムの表面を肉眼観察し、下記の４段階の基準で評価した。
◎：折り曲げ部に割れは全く認められない。
○：折り曲げ部の先端にかすかな白色化が認められる。
△：折り曲げ部全体に白色化が認められる。
×：折り曲げ部にかなりの程度の割れが認められる。
上記の評点において、◎および○は使用上の問題はない。なお、この試験は１０枚の試験片について実施した。
【００３９】
（ワイピング印刷用エンボス加工性）
本発明の高鮮映化粧板積層用印刷樹脂フィルムのワイピング印刷用エンボス加工性の良否は、エンボス加工を施した樹脂フィルムの基材樹脂層の表面の粗さの程度によって判断される。本発明においては、平均表面粗さ（Ｒａ）：１１μｍの凹凸が付与された砂目の彫刻ロールを用いてエンボス加工を施した樹脂フィルムの基材樹脂層の表面を肉眼観察し、エンボス加工性の良否を下記の３段階の基準で評価した。
○：良好、
△：やや不良、
×：不良
なお、上記の評価基準は、ポリ塩化ビニル樹脂フィルムの表面粗さ（Ｒａ：μｍ）を東京精密社製ＳＵＲＦＣＯＭ表面粗さ計を用いてＪＩＳ Ｂ０６０１に準拠して測定し、平均表面粗さが４μｍである場合をエンボス加工性の合格基準とし、平均表面粗さが４μｍのポリ塩化ビニル樹脂フィルムの表面と同等以上の外観を有するものを良好（○）とし、ポリ塩化ビニル樹脂フィルムの表面と比べてやや劣るが実用上問題ない外観を有するものをやや不良（△）とし、エンボス加工が入らないものを不良（×）として、判定した。
【００４０】
（耐汚染性）
実施例１ａ〜１ｇ、２、３、４、５、６、７、８および９で作成した高鮮映化粧板の最表層の樹脂フィルム面に、黒色の油性マジックインキ（登録商標）で描画し２４時間放置した後、エタノールを含浸させた布で清拭し、樹脂フィルム面に残存するマジックインキ（登録商標）の程度を肉眼観察し、下記の基準で評価した。
◎：マジックインキ（登録商標）は全く認められない。
○：実用上問題ない程度の極くわずかなマジックインキ（登録商標）の残存が認められる。
△：実用上問題となる程度のわずかなマジックインキ（登録商標）の残存が認められる。
×：かなりの程度にマジックインキ（登録商標）の残存が認められる。
【００４１】
（耐溶剤性）
実施例１ａ〜１ｇ、２、３、４、５、６、７、８および９で作成した高鮮映化粧板の最表層の樹脂フィルム面に、メチルエチルケトンを含浸させたスポンジを載せ、２４時間放置した後、フィルム表面の変色および膨れの発生の程度を肉眼観察し、下記の基準で評価した。
◎：変色および膨れの発生は全く認められない。
○：実用上問題ない程度の極くわずかな変色または膨れの発生が認められる。
△：実用上問題となる程度のわずかな変色または膨れの発生が認められる。
×：かなりの程度に変色および膨れが認められる。
【００４２】
（耐水劣化性）
本発明の高鮮映化粧板を高温多湿の状態で長時間経時させた場合（例えばユニットバスの内装材として用いた場合など）を想定し、長時間水と接した場合の樹脂フィルムの耐水劣化性をデュポン衝撃試験法で評価した。
実施例１ａ〜１ｇ、２、３、４、５、６、７、８および９で作成した高鮮映化粧板積層用印刷樹脂フィルムを、厚さ０．５ｍｍの電気亜鉛合金めっき鋼板に積層し試験片とした。この試験片を６０ｍｍ×６０ｍｍの大きさに切り出し、３８±２℃の温度に保持された脱塩水中に１カ月間浸漬した後室温で乾燥し、デュポン衝撃試験機を用い、ＪＩＳ Ｋ ５４００に準拠した条件（衝撃部の大きさ１／２ｉｎｃｈφ、重さ１ｋｇ、落下高さ５０ｃｍ）で衝撃を負荷した。衝撃を負荷した後の樹脂フィルムの状態を肉眼観察し、下記の５段階で評価した。
◎：樹脂フィルムに割れが認められない。
○：樹脂フィルムの一部に細かい割れが認められる。
△：樹脂フィルムの加工部全体に細かい割れが認められる。
×：樹脂フィルムの加工部全体に大きな割れが認められる。
××：樹脂フィルム全体に割れが著しい。
上記の評点において、◎および○は使用上の問題はない。なお、この試験は１０枚の試験片について実施した。
【００４３】
（鮮映性）
実施例１ａ〜１ｇ、２、３、４、５、６、７、８および９で作成した高鮮映化粧板積層用印刷樹脂フィルムを、厚さ０．５ｍｍの電気亜鉛合金めっき鋼板に積層し試験片とした。この試験片表面の鮮映度を、財団法人日本色彩研究所製の携帯用鮮明度光沢計ＰＧＤ−４型により測定した。なお、本発明でいう鮮映性とは、写像鮮映性すなわち化粧面に写した正反射像の鮮明さを意味し、高鮮映とは前記の鮮映度が０．８以上の場合をさす。
これらの樹脂フィルムの特性評価を表１に示す。
【００４４】
【表１】
表１に示すように、本発明の化粧板積層用印刷樹脂フィルムは、エンボス性、耐汚染性、耐溶剤性、耐水劣化性、鮮映性のいずれにおいても優れた特性を示す。
【産業上の利用可能性】
【００４５】
本発明の高鮮映化粧板積層用印刷樹脂フィルムは上記のように構成されており、従来のポリ塩化ビニル樹脂フィルムやオレフィン樹脂フィルムを用いた高鮮映性化粧シートの表面樹脂層にも用いられている二軸延伸ポリエステル樹脂フィルムの面配向係数を０〜０．１７０の範囲に、さらに、面内屈折率の最大値と最小値の差Δｎ（ｍａｘ−ｍｉｎ）を０〜０．０５の範囲に規定することにより、安定した加工性を有する高鮮映化粧板用印刷フィルムを得ることができる。
さらに、ポリブチレンテレフタレートフィルムからなる基材樹脂層および着色樹脂層が熱や張力に対する伸縮変動が少なく、優れた寸法安定性を有しているため、印刷見当精度の良い高鮮映印刷物を得ることができる。
また、従来のポリ塩化ビニル樹脂フィルムと同様の製造方法および製造条件で化粧フィルムが得られるために、新規設備の増設や設備の改造などの設備投資を必要とせず、従来のポリ塩化ビニル樹脂フィルムと同様の、印刷柄とエンボス柄が同調した意匠性に優れた高鮮映な絵柄模様を表現することができる。
そのうえ、基材樹脂層や表面樹脂層を構成する樹脂中に可塑剤を含有していないために、可塑剤のブリードによる表面汚染などの問題が生じることなく、耐汚染性、耐溶剤性、耐水性などの表面物性に優れている。
【図面の簡単な説明】
【００４６】
図１は、本発明の高鮮映化粧板積層用印刷樹脂フィルムの一例を示す断面図である。図２は、本発明の高鮮映化粧板積層用印刷樹脂フィルムの他の一例を示す断面図である。図３は、本発明の高鮮映化粧板積層用印刷樹脂フィルムの他の一例を示す断面図である。図４は、本発明の高鮮映化粧板の一例を示す断面図である。図５は、本発明の高鮮映化粧板の他の一例を示す断面図である。【Technical field】
[0001]
The present invention relates to a printing resin film for laminating high-definition decorative boards and a high-definition decorative board laminated with the resin films, and more specifically, exteriors of home appliances such as electric refrigerator doors and air conditioner covers, and steel sheets Resin film for laminating high-definition decorative panels suitable for applications that require a high-definition printing pattern, such as interiors of furniture, elevators, buildings, etc. It relates to a decorative board.
[Background]
[0002]
First, sharpness in the present invention means image clarity, that is, the sharpness of a specular image reflected on a makeup surface, and the evaluation of the clarity is a portable sharpness made by the Japan Color Research Institute. This was performed by measurement with a gloss meter PGD-4.
Conventionally, as a high-definition decorative plate used for various furniture and building interior materials,
(1) A decorative film in which a resin layer serving as a base material is printed using a normal method, and a coating layer such as an acrylic resin or a polyester resin is provided to protect the surface of the printed layer,
(2) A decorative film in which a transparent biaxially stretched polyester film is laminated via an adhesive layer after printing on a resin layer serving as a substrate;
A laminate of a decorative film such as galvanized steel sheet, plywood or MDF with an adhesive is known.
[Problems to be solved by the invention]
[0003]
However, since the decorative film laminated with the decorative film of (1) has insufficient strength of the decorative film, when performing V-cut processing or the like, the decorative film is cracked during processing or the ink at the corners is peeled off. There is a problem that it is easy to use, and it is not suitable for applications in which V-cut processing or the like is performed. In addition, the decorative board laminated with the decorative film (2) has excellent surface properties such as stain resistance and solvent resistance, but the surface film is poor in flexibility and has a high softening temperature, so that it is embossed. If you do, emboss is difficult to enter.
In order to solve the above problems, the present invention is a biaxially stretched polyester resin film that is also used in the surface resin layer of a high-definition decorative sheet using a conventional polyvinyl chloride resin film or polyolefin resin film. In addition, it has a design pattern with excellent design characteristics that has a print vividness equivalent to or better than conventional high-definition decorative sheets using polyvinyl chloride resin films and polyolefin resin films. A printing resin film for laminating a high-definition decorative board with excellent surface properties such as stain resistance and solvent resistance, and excellent workability, and a high-definition decorative board laminated with the resin film. This is the issue.
DISCLOSURE OF THE INVENTION
[0004]
The printed resin film for laminating high-definition decorative board according to claim 1 is a resin film in which an adhesive resin layer, a base resin layer, a printing layer, and a transparent surface resin layer are sequentially laminated from below,
The surface resin layer is a biaxially stretched polyethylene terephthalate resin film having a plane orientation coefficient of 0 to 0.170 and a difference Δn (max-min) between the maximum value and the minimum value of the in-plane refractive index of 0 to 0.05. ,
A printed layer provided on the lower surface of the surface resin layer is overlaid on the upper surface of the base resin layer of the laminated film of the adhesive resin layer and the base resin layer, and is pressed through a hot roll and heat-sealed and laminated. It is characterized by.
The printed resin film for laminating high-definition decorative board according to claim 2 is a resin film in which an adhesive resin layer, a colored resin layer, a printing layer, a base resin layer, and a transparent surface resin layer are sequentially laminated from the bottom,
The surface resin layer is a biaxially stretched polyethylene terephthalate resin film having a plane orientation coefficient of 0 to 0.170 and a difference Δn (max-min) between the maximum value and the minimum value of the in-plane refractive index of 0 to 0.05. ,
Apply the printed layer on the colored resin layer surface of the laminated film of the adhesive resin layer and the colored resin layer, superimpose the base resin layer on it, press and bond between the hot rolls and heat seal and laminate,
Furthermore, a surface resin layer is laminated on the base resin layer via an adhesive layer.
The printed resin film for laminating high-definition decorative board according to claim 3 is a resin film in which a base resin layer, a printing layer, and a transparent surface resin layer are sequentially laminated from the bottom,
The surface resin layer is a biaxially stretched polyethylene terephthalate resin film having a plane orientation coefficient of 0 to 0.170 and a difference Δn (max-min) between the maximum value and the minimum value of the in-plane refractive index of 0 to 0.05. ,
A printed layer provided on the lower surface of the surface resin layer is superposed on the upper surface of the base resin layer, and the printed layer is pressed between heat rolls and is heat bonded to be laminated.
The printed resin film for laminating high-definition decorative board according to claim 4 is a resin film in which a colored resin layer, a printed layer, a base resin layer, and a transparent surface resin layer are sequentially laminated from below,
The surface resin layer is a biaxially stretched polyethylene terephthalate resin film having a plane orientation coefficient of 0 to 0.170 and a difference Δn (max-min) between the maximum value and the minimum value of the in-plane refractive index of 0 to 0.05. ,
Apply the printing layer on the colored resin layer surface, superimpose the base resin layer on top of it, pass between the hot rolls and press and laminate with heat fusion,
Furthermore, a surface resin layer is laminated on the base resin layer via an adhesive layer.
The printed resin film for laminating high-definition decorative board according to claim 5 is any one of claims 1 to 4, The printing layer is composed of an upper layer that is a pattern printing layer and a lower layer that is a solid printing layer that conceals the entire surface of the base resin layer and imparts a printing background color of the pattern printing layer.
The printed resin film for laminating high-definition decorative board according to claim 6 is any one of claims 1 to 4,
The printing layer is composed of a pattern printing layer.
The printed resin film for laminating high-definition decorative board according to claim 7 is any one of claims 1 to 4,
The base resin layer is embossed and has a printed layer in which ink is filled in an embossed recess formed by the embossing.
The printed resin film for laminating high-definition decorative board according to claim 8 is characterized in that in any one of claims 1 to 4 and 7, the base resin layer is made of a polyester resin.
The printed resin film for laminating high-definition decorative board according to claim 9 is the film according to claim 2 or 4,
The colored resin layer is made of a polyester resin kneaded with a color pigment.
The printed resin film for laminating high-definition decorative board according to claim 10 is characterized in that in claim 8 or 9, the polyester resin is made of polybutylene terephthalate resin.
The printed resin film for laminating high-definition decorative board according to claim 11 is characterized in that, in claim 10, the intrinsic viscosity (IV value) of the polybutylene terephthalate resin is 1.0 to 2.0.
The printed resin film for laminating a high-definition decorative board according to claim 12 is characterized in that, in claim 1 or 3, the base resin layer is made of a polyvinyl chloride resin.
The printed resin film for laminating high-definition decorative board according to claim 13 is characterized in that, in claim 1 or 3, the base resin layer is made of a polyolefin resin.
The printed resin film for laminating high-definition decorative board according to claim 14 is the polyvinyl chloride resin according to claim 2 or 4, wherein the base resin layer is made of polyvinyl chloride resin, and the colored resin layer is kneaded with a color pigment. It is characterized by comprising.
The printed resin film for laminating high-definition decorative board according to claim 15 is characterized in that, in claim 2 or 4, the base resin layer is made of a polyolefin resin, and the colored resin layer is made of a polyolefin resin kneaded with a color pigment. Features.
A high-definition decorative board according to claim 16 is characterized in that the printed resin film for high-definition decorative board lamination according to any one of claims 1 to 15 is laminated on at least one surface of a substrate on which the resin film is laminated. To do.
The high-definition decorative board according to claim 17 is characterized in that, in claim 16, the high-definition decorative board is laminated between the substrate and the printing resin film for laminating the high-definition decorative board via an adhesive layer.
The high-definition decorative board according to claim 18 is characterized in that, in claim 16 or 17, the substrate is a metal plate.
The high-definition decorative board according to claim 19 is characterized in that, in claim 16 or 17, the substrate is a wood board.
A high-definition decorative board according to claim 20 is characterized in that, in claim 16 or 17, the substrate is an inorganic board.
The high-definition decorative board according to claim 21 is characterized in that, in claim 16 or 17, the substrate is paper.
BEST MODE FOR CARRYING OUT THE INVENTION
[0005]
In order to satisfy the processability of the biaxially stretched polyester resin film of the surface resin layer, which has been used for enhancing the sharpness in the printed resin film for laminating a decorative plate used by the inventors of the present invention. As a result of intensive studies, the plane orientation coefficient of the resin film is set to a range of 0 to 0.170, and the difference Δn (max−min) between the maximum value and the minimum value of the in-plane refractive index of the resin film is set to 0 to 0.0. It has been found that the processability of the resin film can be improved by adjusting the range to 05.
Furthermore, we have intensively studied a printable high-definition resin film that has a design pattern with high sharpness and design, and is laminated on a decorative board with excellent surface properties such as stain resistance and solvent resistance. As a result, a copolymerized polyester film is used as the adhesive resin layer, and a polybutylene terephthalate film having a resin intrinsic viscosity of 1.0 to 2.0 is used as the colored resin layer to be selectively laminated and the base resin layer serving as a printing base. Use it to form a pattern print layer, or a pattern print layer and a solid print layer, and then laminate a transparent surface resin layer sequentially from the bottom to obtain a resin film to be laminated on the decorative board satisfying the above required characteristics. I found out that Moreover, after embossing is performed on the base resin layer to form an embossed recess, a wiping print layer in which ink is filled into the embossed recess using a wiping method may be provided.
Furthermore, it has been found that a high-definition decorative board, in which the above resin film is laminated on a metal plate, plywood, inorganic board, paper, etc., has excellent design properties in addition to the above excellent film physical properties of the resin film. It was.
[0006]
The contents of the present invention will be described below.
FIG. 1 is a cross-sectional view showing an example of a printing resin film for laminating a high-definition decorative board according to the present invention, and FIG. 2R> 2 and FIG. 3 show other examples of the printing resin film for laminating a high-definition decorative board according to the present invention. FIG. 4 and FIG. 5 are sectional views showing examples of the high-definition decorative sheet of the present invention. 1 is a printed resin film for laminating high-definition decorative boards, 2 is a substrate, 3 is an adhesive layer, 4 is an adhesive resin layer, 5 is a colored resin layer, 6a is a pattern printing layer, 6b is a solid printing layer, and 7 is a base The material resin layer, 8 is an embossed recess for wiping printing, 9 is a wiping printing layer, 10 is an adhesive layer, 11 is a surface resin layer, and 12 is a high-definition decorative board.
[0007]
The printed resin film 1 for laminating high-definition decorative plates of the present invention has a base resin layer 7 laminated on the upper surface of the adhesive resin layer 4 as shown in FIG. A surface resin layer 11 having a pattern printing layer 6a and a solid printing layer 6b provided on the entire back surface is laminated.
In addition, the printed resin film 1 for laminating high-definition decorative board according to the present invention has a colored resin layer 5 on which an image printed layer 6a is applied on the upper surface of an adhesive resin layer 4 as shown in FIG. A base resin layer 7 provided with a wiping printing layer 9 filled with wiping ink is further laminated on an embossed recess 8 formed on the upper surface by embossing, and adhered to the upper surface of the base resin layer 7. The surface resin layer 11 may be laminated via the agent layer 10.
Further, as shown in FIG. 3, the decorative resin laminate printing resin film 1 of the present invention has a pattern printing layer 6a and a solid printing layer on the colored resin layer 5 of the decorative resin laminate printing resin film 1 shown in FIG. Both 6b may be provided.
[0008]
FIG. 4 shows a high-definition decorative board 12 in which the decorative resin laminate printing resin film 1 shown in FIG. 2 is laminated on the substrate 2 via the adhesive layer 3.
FIG. 5 shows a high-definition decorative board 12 in which the decorative resin laminate printing resin film 1 shown in FIG. 3 is laminated on the substrate 2 via the adhesive layer 3.
[0009]
As the resin of the base resin layer 7 and the colored resin layer 5 of the present invention, a conventionally used polyvinyl chloride resin film or olefin resin film may be used. From the viewpoint of environmental suitability, a polyester resin film, In particular, it is preferable to use a polybutylene terephthalate film having an intrinsic viscosity (IV value) of 1.0 to 2.0. Further, the intrinsic viscosity is more preferably 1.5 or less from the viewpoint of film forming property and 1.2 or more from the viewpoint of water aging resistance (water deterioration resistance). Further, the colored resin layer 5 is obtained by kneading a colored pigment when forming a film on the above resin using an extruder. Similarly to the colored resin layer 5, the base resin layer 7 is also used by an extruder. When forming a film, a colored pigment may be mixed in the resin to form a colored resin layer.
[0010]
The pattern print layer 6 a is a print layer expressing a pattern such as a grain pattern, a stone pattern, a surface pattern of natural leather, a fabric pattern, an abstract pattern, and the solid print layer 6 b is a base resin layer 7 or a colored resin layer 5. It is a printing layer that conceals the entire surface and gives the printing background color of the pattern printing layer 6a, and also a layer that provides thermal adhesion between the base resin layer 7 and the surface resin layer 11 when the adhesive layer 10 is not provided. . As the ink vehicle for forming the printing layers 6a and 6b, known ones such as cellulose derivatives such as nitrocellulose and cellulose acetate and polyester urethane resins can be used, and in particular, from both the viewpoints of adhesion and thermal adhesiveness. Nitrocellulose-alkyd resin ink is preferred.
[0011]
In addition, when embossing is selectively performed on the base resin layer 7 to form the embossed recess 8, and then the embossed recess 8 is filled with ink using the wiping printing method, the embossed recess is provided. As the wiping ink filled in 8, paint or ink is used.
[0012]
For example, natural resins or their modified resins, cellulose derivatives, polyester resins, acrylic resins, polyurethane resins, and other synthetic resins are used as vehicle constituent materials, and colored pigments, extender pigments, etc. are added to the vehicle. A paint or ink is used. As the vehicle used, a urethane two-component curable type is suitably used. As the wiping printing method, any conventionally used wiping printing method such as a doctor blade method or a roll coating method may be used.
[0013]
In addition, when embossing is selectively performed on the base resin layer 7 to form the embossed recess 8, and then the embossed recess 8 is filled with ink using the wiping printing method, the embossed recess is provided. As the wiping ink filled in 8, paint or ink is used.
[0014]
For example, natural resins or their modified resins, cellulose derivatives, polyester resins, acrylic resins, polyurethane resins, and other synthetic resins are used as vehicle constituent materials, and colored pigments, extender pigments, etc. are added to the vehicle. A paint or ink is used. As the vehicle used, a urethane two-component curable type is suitably used. As the wiping printing method, any conventionally used wiping printing method such as a doctor blade method or a roll coating method may be used.
[0015]
The surface resin layer 11 is preferably a polyester resin film such as polyethylene terephthalate, a polycarbonate film, or an acrylic resin film, and more preferably a biaxially stretched polyester film. This polyester resin film is characterized by comprising a polyester resin that does not contain a plasticizer and a halogen group element.
[0016]
The biaxially stretched polyester resin film preferably has a plane orientation coefficient in the range of 0 to 0.170, and further has a difference Δn (max−min) between the maximum value and the minimum value of the in-plane refractive index. A range of 0 to 0.05 is preferred.
[0017]
The calculation method of the plane orientation coefficient and the measurement method of the refractive index will be described later. However, when the plane orientation coefficient exceeds 0.170, that is, when the orientation degree becomes too high, the workability is remarkably reduced. When the difference Δn (max−min) between the maximum value and the minimum value of the internal refractive index exceeds 0.05, that is, even if the in-plane anisotropy of orientation becomes too strong, directionality occurs in superiority or inferiority of workability, It is not preferable.
[0018]
As the resin for the adhesive resin layer 4, it is preferable to use a copolymer polyester resin such as an ethylene terephthalate / isophthalate copolymer.
[0019]
As an example of the material constituting the polyester resin, in addition to the above, a copolymerized polyester resin having the following composition is preferably used. That is, as a soft segment forming a resin, polyoxyalkylene glycol such as polyethylene glycol and polytetramethylene glycol, or HOOC- [CH2] n such as polyε-caprolactone, azelaic acid, sebacic acid, dodecanedioic acid, and dimer acid An aliphatic polyester composed of an aliphatic dicarboxylic acid having a molecular structure of —COOH and an aliphatic and / or alicyclic diol is preferably used.
[0020]
The hard segment constituting the resin includes aromatic and / or alicyclic ester units such as ethylene terephthalate, butylene terephthalate, cyclohexane dimethylene terephthalate, cyclohexane dimethylene cyclohexane dicarboxylate, butylene 2,6 naphthalene dicarboxylate, etc. It is preferable that it is composed of at least one selected from.
[0021]
Further, it is preferable that the alcohol component contains 1,4 butanediol residue from the viewpoint of solvent resistance, and 40 mol% of 1,4 butanediol residue occupies in all the alcohol components forming the copolymer polyester. As mentioned above, it is preferable that it is 65 mol% or less.
When stronger adhesion to the substrate is required, an ionomer resin component may be contained in a part of the resin component of the adhesive resin layer 4. In this case, the ionomer resin component is preferably 1 to 50% by weight of the total resin component.
[0022]
The refractive index and plane orientation coefficient of the resin film, which are important factors in the surface resin layer of the present invention, can be determined by the following method. That is, the refractive index of the polyester resin film to be used is parallel to the longitudinal direction of the film, 90 ° direction, 45 ° direction, 135 ° direction, and the thickness direction in order to obtain the plane orientation coefficient. Measure with a refractometer. Then, a difference Δn (max−min) between the maximum value and the minimum value of the in-plane refractive index is obtained from the refractive indexes in the parallel direction, 90 ° direction, 45 ° direction, and 135 ° direction.
Further, the plane orientation coefficient is calculated from the following equation using the measured refractive index.
Plane orientation coefficient = (A + B) / 2-C
A: Refractive index in parallel direction
B: Refractive index in 90 ° direction
C: Refractive index in the thickness direction
[0023]
The printing resin film 1 for laminating high-definition decorative plates according to the present invention shown in FIG. 1 can be prepared as follows.
That is, the pattern printing layer 6a provided on the lower surface of the surface resin layer 11 on the upper surface on the base resin layer 7 side of the laminated film of the adhesive resin layer 4 and the base resin layer 7 formed as a two-layer film by coextrusion; The printing layer 6 composed of the solid printing layer 6b is overlapped, and the coextruded laminated film of the adhesive resin layer 4 and the base resin layer 7 and the surface resin layer 11 are overlapped and passed between a pair of hot rolls. A single laminated film is manufactured by pressure bonding and heat sealing. By applying pressure while heating, the surface of the solid print layer 6b of the surface resin layer 11 is fused to the base resin layer 7 to make one printed resin film 1 for laminating a high-definition decorative sheet.
[0024]
Further, the adhesive resin layer 4 and the colored resin layer 5 kneaded with the pigment are co-extruded to form a two-layer film, and a pattern printing layer 6a is applied on the colored resin layer 5, and further, a base resin is formed thereon. While the layers 7 are superposed, they are passed between a pair of hot rolls and are pressed and pressure bonded, and heat bonded to form a laminated film. At that time, by using an embossing roll as the heat roll, it is possible to carry out lamination and embossing of the base resin layer 7 at the same time. By forming No. 8 and filling the wiping ink and providing the wiping printing layer 9, a highly designable pattern can be imparted.
Furthermore, the surface resin layer 11 is laminated | stacked through the adhesive bond layer 10 on it, and the printed resin film 1 for high-definition decorative board lamination shown in FIG. 2 can be obtained.
Since the colored resin layer 5 and the base resin layer 7 are excellent in dimensional stability, it is possible to suppress fluctuations in expansion and contraction caused by tension and heat, and embossing having high design characteristics in which the printed pattern and the embossed pattern are synchronized. It can be set as a decorative film. Steps such as the above laminating operation and embossing can be performed with the same apparatus as in a conventional polyvinyl chloride resin film.
[0025]
Furthermore, by providing a solid print layer 6b on the surface of the colored resin layer 5 in FIG. 2 and using a resin film on which the pattern print layer 6a is provided, the design is further improved as shown in FIG. It is also possible to use the decorative resin laminated printing resin film 1.
[0026]
Moreover, the high-definition image as shown in FIG. 4 or FIG. 5 is obtained by laminating the printed resin film 1 for laminating the high-definition decorative plate obtained by the above method with the substrate 2 with the adhesive layer 3 interposed therebetween. A decorative board 12 is obtained. As the substrate 2, for example, timber single plate, wood plywood, particle board, wood plate such as MDF, steel plate, aluminum alloy plate, zinc plating such as zinc, zinc-aluminum alloy, zinc-cobalt-molybdenum alloy, etc. A metal plate such as a steel plate, or a board or paper made of an inorganic material such as gypsum board, calcium silicate board, or asbestos slate board is used.
[0027]
As an adhesive of the adhesive layer 3 used for laminating the printed resin film 1 for laminating high-definition decorative board and the substrate 2, general adhesives such as vinyl acetate resin, ethylene-vinyl acetate resin, Emulsion adhesives such as urea resin and urethane resin are preferably used because they are safe against fire, have no odor, and are inexpensive.
Next, the present invention will be described in more detail with reference to examples.
[0028]
(Examples 1a to 1g)
A nitrocellulose-alkyd ink (manufactured by Showa Ink) is used on one side of a transparent biaxially stretched polyethylene terephthalate film (manufactured by Teijin) with a thickness of 25 μm, and a pattern printing layer and a colored solid printing layer are printed inline on a gravure rotary press. And a two-layer unstretched film having a thickness of 70 μm (thickness ratio: PBT / PES = 4 /) produced by an extrusion film forming machine using a commercially available polybutylene terephthalate resin (PBT) and a copolyester resin (PES). 1) is stacked so that the printing layer and the PBT film are in contact with each other, the heating temperature of the pressure bonding roll: 200 ° C., the feeding speed of the resin film: 20 m / min, the nip pressure of the pressure bonding roll: 15 kgf / cm2Both films were heat-pressed and laminated under the above conditions to produce a printed resin film for laminating high-definition decorative boards. Next, 5 g / m of polyester adhesive is applied to a 0.5 mm thick electrogalvanized steel sheet.2The above-mentioned printing resin film for laminating high-definition decorative board is applied such that the PES surface is in contact with the electrogalvanized steel sheet, heating temperature: 210 ° C., adhesive pressure: 15 kgf / cm2Crimping time: Heat-bonded under conditions of 5 seconds to obtain a decorative board.
Here, in each of Examples 1a to 1g, a transparent biaxially stretched polyethylene terephthalate film in which the difference Δn (max−min) between the maximum value and the minimum value of the plane orientation coefficient and the in-plane refractive index is the value described in Table 1. It is a decorative board which laminated | stacked the resin film using.
[0029]
(Example 2)
A colored resin obtained by kneading 20% by weight of a cream color pigment with a commercially available polybutylene terephthalate resin (PBT) and a copolymer polyester resin (PES) were prepared by an extrusion film forming machine at a thickness ratio: PBT / PES = 4/1. Nitrocellulose-alkyd ink (manufactured by Showa Ink) is used on one side of a PBT side of a 50 μm thick two-layer unstretched film, and a pattern printing layer is printed inline with a gravure rotary press, and a commercially available PBT A transparent unstretched film having a thickness of 70 μm formed by extrusion film formation is opposed to the transparent unstretched film so that the printed surface is in contact with the transparent unstretched film, and is transparent under the same conditions as the lamination conditions by thermocompression bonding in Example 1. By using the PBT single layer film surface as the embossing roll side and passing between the embossing roll and the crimping roll consisting of a silicon rubber roll, A three-layer film having an embossed recess on the transparent PBT film surface was prepared. Next, two-component curable urethane-based colored ink (made by Showa Ink) is applied to the surface having the embossed recesses by a roll coating method, and then the colored ink adhering to portions other than the embossed recesses is removed with a doctor blade. The embossed recess formed on the surface of the laminated film was filled with colored ink and solidified to produce a printed resin film. Further, the embossed surface of this printing resin film was opposed to the adhesive-coated surface of a 25 μm-thick transparent biaxially stretched polyethylene terephthalate film (manufactured by Teijin) coated with an epoxy-phenolic adhesive on one side, Example 1 A high-definition decorative film excellent in design was produced by passing through a pressure-bonding roll consisting of a pair of silicon rubber rolls under the same conditions as those for the thermocompression bonding. Next, a polyurethane adhesive is applied to a wood plywood having a thickness of 6 mm at 50 g / m.2The above-mentioned printing resin film for laminating high-definition decorative board is applied at a heating temperature of 160 ° C. and an adhesive pressure of 15 kgf / cm so that the PES surface is in contact with the wood plywood.2Crimping time: Heat-bonded under conditions of 15 seconds to obtain a high-definition decorative board.
[0030]
(Example 3)
The same conditions as in Example 2 except that a colored solid printing layer is directly provided on the PBT on one side of the same PBT and PES two-layer unstretched film as in Example 2, and further a pattern printing layer is provided thereon. Printed. Furthermore, exactly the same as in Example 2, the two-layer unstretched film and the same transparent PBT unstretched film as in Example 2 were laminated, embossed and then subjected to wiping printing to produce a printed resin film. Thereafter, a transparent biaxially stretched polyethylene terephthalate film (manufactured by Teijin) having a thickness of 25 μm was laminated with an adhesive interposed in the same manner as in Example 2 to produce a high-definition decorative film excellent in design. Next, 80 g / m of polyurethane adhesive is applied to a gypsum board with a thickness of 8 mm.2The coating resin film for laminating the high-definition decorative plate is heated at a heating temperature of 180 ° C. and an adhesion pressure of 15 kgf / cm.2Crimping time: Heat-bonded under conditions of 20 seconds to obtain a high-definition decorative board.
[0031]
(Example 4)
After producing a printed resin film in the same manner as in Example 2, a 25-μm thick transparent biaxially stretched polycarbonate film (manufactured by Teijin) coated with an epoxy-phenolic adhesive on one side of the embossed surface of the printed resin film. A high-definition decorative film excellent in design was produced by pressing the adhesive-applied surfaces of and facing each other under the same conditions as those in Example 1 for thermocompression bonding. Next, in the same manner as in Example 2, the printed resin film for laminating high-definition decorative plate was heat-pressed on a 6 mm thick wood plywood to obtain a high-definition decorative plate.
[0032]
(Example 5)
After producing a printing resin film in the same manner as in Example 3, an adhesive for a transparent biaxially stretched acrylic resin film having a thickness of 25 μm, in which an epoxy-phenol adhesive was applied to one side of the embossed surface of the printing resin film A high-definition decorative film excellent in design was produced by making the coated surfaces face each other and pressure-bonding under the same conditions as the lamination conditions by thermocompression bonding in Example 1. Next, 20 g / m of polyurethane adhesive is applied to the core paper impregnated with 5 mm thick phenolic resin.2The coating resin film for laminating the high-definition decorative plate is heated at a heating temperature of 180 ° C. and an adhesion pressure of 15 kgf / cm.2Crimping time: Heat-bonded under conditions of 20 seconds to obtain a high-definition decorative board.
[0033]
(Example 6)
The same transparent biaxially stretched polyethylene terephthalate film as in Example 1 was printed with a pattern printing layer and a colored solid printing layer in the same manner as in Example 1, and a commercially available polyvinyl chloride resin (PVC) having a thickness of 80 μm. ) The film is overlapped so that the printed layer and the PVC film are in contact with each other, the heating temperature of the pressure bonding roll: 180 ° C., the feeding speed of the resin film: 20 m / min, the nip pressure of the pressure bonding roll: 15 kgf / cm2Both films were heat-pressed and laminated under the above conditions to produce a printed resin film for laminating high-definition decorative boards. Next, 5 g / m of polyester adhesive was applied to the same electrogalvanized steel sheet as in Example 1.2The above-mentioned printed resin film for laminating high-definition decorative board is heat-pressed in the same manner as in Example 1 so that the PVC surface is in contact with the electrogalvanized steel sheet, thereby obtaining a decorative board. It was.
[0034]
(Example 7)
A pattern printed layer printed in the same manner as in Example 2 on one side of a 50 μm-thick unstretched film obtained by forming a colored resin obtained by kneading 15% by weight of a blue pigment into commercially available PVC with an extrusion film forming machine; Then, a transparent unstretched film having a thickness of 80 μm formed by commercially available PVC by an extrusion film forming machine is opposed to the transparent unstretched film so that the printed surface is in contact with the transparent unstretched film. A two-layer film having an embossed recess on the surface of the transparent PVC film by pressing the transparent PVC single-layer film surface on the embossing roll side under a condition and passing between the embossing roll and a pressing roll made of a silicon rubber roll. Created. Next, in the same manner as in Example 2, the surface having the embossed recesses was filled with colored ink in the embossed recesses and solidified to prepare a printed resin film. Further, the embossed surface of this printing resin film was opposed to the adhesive-coated surface of a 25 μm-thick transparent biaxially stretched polyethylene terephthalate film (manufactured by Teijin) coated with an epoxy-phenolic adhesive on one side, Example 1 A high-definition decorative film excellent in design was produced by passing through a pressure-bonding roll consisting of a pair of silicon rubber rolls under the same conditions as those for the thermocompression bonding. Next, 50 g / m of polyurethane adhesive is applied to the same wood plywood as in Example 2.2The coating resin film for laminating the high-definition decorative board was heat-pressed in the same manner as in Example 2 so that the colored PVC surface was in contact with the wood plywood to obtain a decorative board.
[0035]
(Example 8)
On the one side of the same transparent biaxially stretched polyethylene terephthalate film as in Example 1, a pattern printing layer and a colored solid printing layer were printed in the same manner as in Example 1, and a commercially available polypropylene resin (PP) film having a thickness of 60 μm. Are stacked so that the printing layer and the PP film are in contact with each other, the heating temperature of the pressure-bonding roll is 150 ° C., the feed speed of the resin film is 20 m / min, and the nip pressure of the pressure-bonding roll is 15 kgf / cm.2Both films were heat-pressed and laminated under the above conditions to produce a printed resin film for laminating high-definition decorative boards. Next, 5 g / m of polyester adhesive was applied to the same electrogalvanized steel sheet as in Example 1.2The above-mentioned printed resin film for laminating high-definition decorative board was heat-pressed in the same manner as in Example 1 so that the PP surface was in contact with the electrogalvanized steel sheet, and a decorative board was obtained. It was.
[0036]
Example 9
A printed pattern printed in the same manner as in Example 2 on one side of an unstretched film having a thickness of 50 μm obtained by forming a colored resin obtained by kneading 15% by weight of a blue pigment into commercially available PP with an extrusion film forming machine. A transparent unstretched film having a thickness of 75 μm obtained by forming a commercially available PP with an extrusion film forming machine is opposed to the transparent unstretched film so that the printing surface is in contact with the transparent unstretched film. A two-layer film having an embossed recess on the surface of a transparent PP film by pressing the transparent PP single-layer film surface on the embossing roll side under a condition and passing between the embossing roll and a pressing roll made of a silicon rubber roll. Created. Next, in the same manner as in Example 2, the surface having the embossed recesses was filled with colored ink in the embossed recesses and solidified to prepare a printed resin film. Further, the embossed surface of this printing resin film was opposed to the adhesive-coated surface of a 25 μm-thick transparent biaxially stretched polyethylene terephthalate film (manufactured by Teijin) coated with an epoxy-phenolic adhesive on one side, Example 1 A high-definition decorative film excellent in design was produced by passing through a pressure-bonding roll consisting of a pair of silicon rubber rolls under the same conditions as those for the thermocompression bonding. Next, 50 g / m of polyurethane adhesive is applied to the same wood plywood as in Example 2.2The coating resin film for laminating high-definition decorative board was heat-pressed in the same manner as in Example 2 so that the colored PP surface was in contact with the wood plywood to obtain a decorative board.
[0037]
(Characteristic evaluation of resin film)
The high-definition decorative decorative boards prepared in Examples 1a to 1g, 2, 3, 4, 5, 6, 7, 8, and 9 were evaluated for the following characteristics.
[0038]
(Processability of resin film)
The processability of the printed resin film for laminating a high-definition decorative plate according to the present invention was determined by using JIS Z 2248 (metal) on the high-definition decorative metal plate prepared in Examples 1a to 1g and laminating the decorative film on the metal plate. In accordance with the material bending test method), 0T bending was performed, the film surface of the bent portion was visually observed, and evaluated according to the following four criteria.
(Double-circle): A crack is not recognized at all in a bending part.
○: Slight whitening is observed at the end of the bent portion.
(Triangle | delta): Whitening is recognized by the whole bending part.
X: A considerable degree of cracking is observed in the bent portion.
In the above ratings, ◎ and ○ are not problematic in use. In addition, this test was implemented about ten test pieces.
[0039]
(Embossability for wiping printing)
The quality of the embossing property for wiping printing of the printing resin film for laminating high-definition decorative board of the present invention is determined by the degree of roughness of the surface of the base resin layer of the embossed resin film. In the present invention, the surface of the base resin layer of the resin film embossed using a grained engraving roll having an average surface roughness (Ra): 11 μm of irregularities is visually observed, and embossability is obtained. Was evaluated according to the following three criteria.
○: Good,
Δ: Somewhat bad,
×: Defect
In addition, said evaluation criteria measured the surface roughness (Ra: micrometer) of a polyvinyl chloride resin film based on JIS B0601 using the SURFCOM surface roughness meter by Tokyo Seimitsu Co., Ltd., and average surface roughness was 4 micrometers. Is the acceptable standard for embossability, and the one with an average surface roughness equal to or better than the surface of the polyvinyl chloride resin film with a thickness of 4 μm is considered good (◯), compared with the surface of the polyvinyl chloride resin film. A product having an appearance that was slightly inferior but practically acceptable was judged as slightly defective (Δ), and a product not embossed was judged as defective (x).
[0040]
(Contamination resistance)
Drawing with black oil-based magic ink (registered trademark) on the resin film surface of the outermost layer of the high-definition decorative board prepared in Examples 1a to 1g, 2, 3, 4, 5, 6, 7, 8, and 9. After leaving it for 24 hours, it was wiped with a cloth impregnated with ethanol, and the degree of Magic Ink (registered trademark) remaining on the resin film surface was visually observed and evaluated according to the following criteria.
A: Magic ink (registered trademark) is not recognized at all.
○: A very slight amount of Magic Ink (registered trademark) remained to the extent that there is no practical problem.
(Triangle | delta): Remaining slight magic ink (trademark) of the grade which is a problem in practical use is recognized.
X: Magic ink (registered trademark) remains to a considerable extent.
[0041]
(Solvent resistance)
A sponge impregnated with methyl ethyl ketone was placed on the outermost resin film surface of the high-definition decorative decorative board prepared in Examples 1a to 1g, 2, 3, 4, 5, 6, 7, 8 and 9, and left for 24 hours. Then, the degree of occurrence of discoloration and swelling on the film surface was observed with the naked eye and evaluated according to the following criteria.
A: No discoloration or swelling is observed.
◯: Generation of slight discoloration or swelling that is not problematic for practical use is recognized.
(Triangle | delta): Generation | occurrence | production of slight discoloration or swelling of the grade which is a problem practically is recognized.
X: Discoloration and swelling are recognized to a considerable extent.
[0042]
(Water degradation resistance)
Assuming that the high-definition decorative board of the present invention has been aged for a long time in a hot and humid state (for example, when used as an interior material for a unit bath), the water resistance deterioration of the resin film when in contact with water for a long time The properties were evaluated by the DuPont impact test method.
Laminated printed resin films for laminating high-definition decorative boards made in Examples 1a to 1g, 2, 3, 4, 5, 6, 7, 8, and 9 were laminated on a 0.5 mm thick electrogalvanized steel sheet. A test piece was obtained. This test piece was cut into a size of 60 mm × 60 mm, immersed in demineralized water maintained at a temperature of 38 ± 2 ° C. for 1 month, dried at room temperature, and in compliance with JIS K 5400 using a DuPont impact tester. The impact was applied under the conditions (impact part size 1/2 inch φ, weight 1 kg, drop height 50 cm). The state of the resin film after the impact was loaded was observed with the naked eye and evaluated in the following five stages.
(Double-circle): A crack is not recognized by the resin film.
○: Fine cracks are observed in a part of the resin film.
(Triangle | delta): A fine crack is recognized in the whole process part of a resin film.
X: A big crack is recognized by the whole process part of a resin film.
XX: The crack is remarkable in the whole resin film.
In the above ratings, ◎ and ○ are not problematic in use. In addition, this test was implemented about ten test pieces.
[0043]
(Vividness)
Laminated printed resin films for laminating high-definition decorative boards made in Examples 1a to 1g, 2, 3, 4, 5, 6, 7, 8, and 9 were laminated on a 0.5 mm thick electrogalvanized steel sheet. A test piece was obtained. The sharpness of the surface of the test piece was measured with a portable sharpness gloss meter PGD-4 manufactured by Japan Color Research Institute. The sharpness in the present invention means the sharpness of the image, that is, the sharpness of the specular image reflected on the makeup surface, and the high-definition means that the sharpness is 0.8 or more. Sure.
Table 1 shows the characteristic evaluation of these resin films.
[0044]
[Table 1]
As shown in Table 1, the decorative resin laminate printing resin film of the present invention exhibits excellent characteristics in any of embossability, stain resistance, solvent resistance, water resistance, and sharpness.
[Industrial applicability]
[0045]
The printing resin film for laminating high-definition decorative board of the present invention is configured as described above, and is also used for the surface resin layer of a high-definition decorative sheet using a conventional polyvinyl chloride resin film or olefin resin film. The plane orientation coefficient of the biaxially stretched polyester resin film is in the range of 0 to 0.170, and the difference Δn (max-min) between the maximum value and the minimum value of the in-plane refractive index is 0 to 0.05. By defining in the range, it is possible to obtain a high-definition decorative board printing film having stable processability.
Furthermore, since the base resin layer and the colored resin layer made of polybutylene terephthalate film have little variation in expansion and contraction with respect to heat and tension and have excellent dimensional stability, it is possible to obtain a high-definition printed matter with high printing registration accuracy. Can do.
In addition, since a decorative film can be obtained with the same manufacturing method and manufacturing conditions as conventional polyvinyl chloride resin films, there is no need for capital investment such as expansion of new facilities or modification of existing facilities. It is possible to express a high-definition picture pattern with excellent design that synchronizes the printed pattern and the embossed pattern.
In addition, since the resin constituting the base resin layer and the surface resin layer does not contain a plasticizer, it does not cause problems such as surface contamination due to bleed of plasticizer, and is resistant to contamination, solvent resistance, and water resistance. Excellent surface properties such as properties.
[Brief description of the drawings]
[0046]
FIG. 1 is a cross-sectional view showing an example of a printing resin film for laminating high-definition decorative plates according to the present invention. FIG. 2 is a cross-sectional view showing another example of the printed resin film for laminating high-definition decorative plates of the present invention. FIG. 3 is a cross-sectional view showing another example of the printing resin film for laminating high-definition decorative boards according to the present invention. FIG. 4 is a cross-sectional view showing an example of the high-definition decorative board of the present invention. FIG. 5 is a cross-sectional view showing another example of the high-definition decorative sheet of the present invention.
Claims (21)
表面樹脂層が、面配向係数が０〜０．１７０で、面内屈折率の最大値と最小値の差Δｎ（ｍａｘ−ｍｉｎ）が０〜０．０５の二軸延伸ポリエチレンテレフタレート樹脂フィルムであり、
接着樹脂層と基材樹脂層の積層フィルムの基材樹脂層の上面に、表面樹脂層の下面に設けた印刷層を重ね合わせ、熱ロール間に通して圧着するとともに熱融着して積層してなる高鮮映化粧板積層用印刷樹脂フィルム。An adhesive resin layer, a base resin layer, a printing layer, and a transparent surface resin layer are sequentially laminated from the bottom, a resin film,
The surface resin layer is a biaxially stretched polyethylene terephthalate resin film having a plane orientation coefficient of 0 to 0.170 and a difference Δn (max-min) between the maximum value and the minimum value of the in-plane refractive index of 0 to 0.05. ,
A printed layer provided on the lower surface of the surface resin layer is overlaid on the upper surface of the base resin layer of the laminated film of the adhesive resin layer and the base resin layer, and is pressed through a hot roll and heat-sealed and laminated. A printing resin film for laminating high-definition decorative panels.
表面樹脂層が、面配向係数が０〜０．１７０で、面内屈折率の最大値と最小値の差Δｎ（ｍａｘ−ｍｉｎ）が０〜０．０５の二軸延伸ポリエチレンテレフタレート樹脂フィルムであり、
接着樹脂層と着色樹脂層の積層フィルムの着色樹脂層面に印刷層を施し、その上に基材樹脂層を重ね合わせ、熱ロール間に通して圧着するとともに熱融着して積層し、
さらに前記基材樹脂層の上に接着剤層を介して表面樹脂層を積層してなる高鮮映化粧板積層用印刷樹脂フィルム。An adhesive resin layer, a colored resin layer, a printing layer, a base resin layer, a resin film in which a transparent surface resin layer is sequentially laminated from below ,
The surface resin layer is a biaxially stretched polyethylene terephthalate resin film having a plane orientation coefficient of 0 to 0.170 and a difference Δn (max-min) between the maximum value and the minimum value of the in-plane refractive index of 0 to 0.05. ,
Apply the printed layer on the colored resin layer surface of the laminated film of the adhesive resin layer and the colored resin layer, superimpose the base resin layer on it, press and bond between the hot rolls and heat seal and laminate,
Furthermore , a printed resin film for laminating high-definition decorative plates, which is obtained by laminating a surface resin layer on the base resin layer via an adhesive layer .
表面樹脂層が、面配向係数が０〜０．１７０で、面内屈折率の最大値と最小値の差Δｎ（ｍａｘ−ｍｉｎ）が０〜０．０５の二軸延伸ポリエチレンテレフタレート樹脂フィルムであり、
基材樹脂層の上面に、表面樹脂層の下面に設けた印刷層を重ね合わせ、熱ロール間に通して圧着するとともに熱融着して積層してなる高鮮映化粧板積層用印刷樹脂フィルム。A resin film in which a base resin layer, a printing layer, and a transparent surface resin layer are sequentially laminated from the bottom ,
The surface resin layer is a biaxially stretched polyethylene terephthalate resin film having a plane orientation coefficient of 0 to 0.170 and a difference Δn (max-min) between the maximum value and the minimum value of the in-plane refractive index of 0 to 0.05. ,
A printed resin film for laminating high-definition decorative boards, which is obtained by laminating a printing layer provided on the lower surface of the surface resin layer on the upper surface of the base resin layer, and laminating it by heat-sealing and heat-sealing. .
表面樹脂層が、面配向係数が０〜０．１７０で、面内屈折率の最大値と最小値の差Δｎ（ｍａｘ−ｍｉｎ）が０〜０．０５の二軸延伸ポリエチレンテレフタレート樹脂フィルムであり、
着色樹脂層面に印刷層を施し、その上に基材樹脂層を重ね合わせ、熱ロール間に通して圧着するとともに熱融着して積層し、
さらに前記基材樹脂層の上に接着剤層を介して表面樹脂層を積層してなる高鮮映化粧板積層用印刷樹脂フィルム。A resin film in which a colored resin layer, a printing layer, a base resin layer, and a transparent surface resin layer are sequentially laminated from the bottom ,
The surface resin layer is a biaxially stretched polyethylene terephthalate resin film having a plane orientation coefficient of 0 to 0.170 and a difference Δn (max-min) between the maximum value and the minimum value of the in-plane refractive index of 0 to 0.05. ,
Apply the printing layer on the colored resin layer surface, superimpose the base resin layer on top of it, pass between the hot rolls and press and laminate with heat fusion,
Furthermore , a printed resin film for laminating high-definition decorative plates, which is obtained by laminating a surface resin layer on the base resin layer via an adhesive layer .
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18085299 | 1999-06-25 | ||
| PCT/JP2000/004155 WO2001000411A1 (en) | 1999-06-25 | 2000-06-23 | Printing resin film for laminating high-sharpness decorative laminated sheet excellent in workability and high-sharpness decorative laminated sheet laminated with the resin films |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP3913060B2 true JP3913060B2 (en) | 2007-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001506098A Expired - Fee Related JP3913060B2 (en) | 1999-06-25 | 2000-06-23 | Printed resin film for laminating high-definition decorative board excellent in processability and high-definition decorative board laminated with the resin film |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3913060B2 (en) |
| AU (1) | AU5429900A (en) |
| TW (1) | TW524743B (en) |
| WO (1) | WO2001000411A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7316832B2 (en) | 2001-12-20 | 2008-01-08 | The Procter & Gamble Company | Articles and methods for applying color on surfaces |
| US7709070B2 (en) | 2001-12-20 | 2010-05-04 | The Procter & Gamble Company | Articles and methods for applying color on surfaces |
| WO2004074009A2 (en) | 2003-02-14 | 2004-09-02 | The Procter & Gamble Company | Article for being applied to a surface and method thereof |
| US20040161564A1 (en) | 2003-02-14 | 2004-08-19 | Truog Keith L. | Dry paint transfer laminate |
| DE10309917A1 (en) * | 2003-03-07 | 2004-09-16 | Klöckner Pentaplast B.V., SM Weert | Plastic film for furniture or furniture parts |
| US20050196607A1 (en) | 2003-06-09 | 2005-09-08 | Shih Frank Y. | Multi-layer dry paint decorative laminate having discoloration prevention barrier |
| JP7107779B2 (en) * | 2018-08-03 | 2022-07-27 | スリーエム イノベイティブ プロパティズ カンパニー | building material |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63280627A (en) * | 1987-05-13 | 1988-11-17 | Toyo Kohan Co Ltd | Highly bright laminated metal plate and its manufacture |
| JP2960173B2 (en) * | 1991-01-22 | 1999-10-06 | 大日本印刷株式会社 | High-definition laminated metal sheet and decorative sheet used for it |
| JPH06305075A (en) * | 1993-04-23 | 1994-11-01 | Dainippon Printing Co Ltd | Highly sharp laminated metal plate and decorative sheet used therein |
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2000
- 2000-06-23 AU AU54299/00A patent/AU5429900A/en not_active Abandoned
- 2000-06-23 WO PCT/JP2000/004155 patent/WO2001000411A1/en active Application Filing
- 2000-06-23 TW TW89112475A patent/TW524743B/en not_active IP Right Cessation
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| AU5429900A (en) | 2001-01-31 |
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