JP3090956B2 - High definition resin coated metal plate with excellent processing adhesion - Google Patents
High definition resin coated metal plate with excellent processing adhesionInfo
- Publication number
- JP3090956B2 JP3090956B2 JP09540740A JP54074097A JP3090956B2 JP 3090956 B2 JP3090956 B2 JP 3090956B2 JP 09540740 A JP09540740 A JP 09540740A JP 54074097 A JP54074097 A JP 54074097A JP 3090956 B2 JP3090956 B2 JP 3090956B2
- Authority
- JP
- Japan
- Prior art keywords
- resin
- metal plate
- layer
- coated metal
- film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
Landscapes
- Laminated Bodies (AREA)
Description
【発明の詳細な説明】 技術分野 本発明は、優れた加工密着性および鮮映性を有する樹
脂被覆金属板に関する。Description: TECHNICAL FIELD The present invention relates to a resin-coated metal plate having excellent processing adhesion and sharpness.
背景技術 近年、家電機器、音響機器、厨房器具、内装建材など
の高級化にともない、意匠の高級化が追求されている。
意匠の高級化は、張出し加工、深絞り加工等の加工形
状、および材料表面の意匠性、とりわけ材料表面に印刷
された印刷パターンを高鮮映性で表現することにより達
成される。そのため、張出し加工、深絞り加工等の成形
加工密着性に優れた高鮮映性化粧金属板の要求が高まっ
ている。BACKGROUND ART In recent years, as home appliances, audio equipment, kitchen appliances, interior building materials, and the like have been upgraded, design upgrades have been pursued.
Upgrading of a design is achieved by expressing processed shapes such as overhanging and deep drawing, and the design of the material surface, especially the printed pattern printed on the material surface with high definition. For this reason, there is an increasing demand for a high-definition decorative metal plate excellent in forming process adhesion such as overhanging process and deep drawing process.
従来この種の高鮮映性化粧金属板に用いる金属基板と
しては、金属板の表面粗度が鮮映性に大きく影響するた
めに、金属板の表面粗度である中心線平均粗さ（Ra）の
小さい磨き板を用いることが推奨されている。しかし、
磨き板を圧延加工で得ようとすると、粗度が小さいため
に摩擦係数が小さくなりスリップしやすく、したがって
極めて生産性に乏しく、高価な材料とならざるを得な
い。さらに、磨き板を金属基板として用いた場合、その
上に形成される被覆層に対するアンカー効果が十分に作
用しないため、被覆層の加工密着性が不十分となる。Conventionally, as a metal substrate used for this type of high-definition decorative metal plate, since the surface roughness of the metal plate greatly affects the sharpness, the center line average roughness (Ra), which is the surface roughness of the metal plate, is used. It is recommended to use a polished plate with a small size of ()). But,
If a polished plate is to be obtained by rolling, the coefficient of friction will be small due to the small roughness, and slip will occur easily. Therefore, the productivity will be extremely poor and the material must be expensive. Furthermore, when a polished plate is used as a metal substrate, the anchoring effect on the coating layer formed thereon does not sufficiently act, and the processing adhesion of the coating layer becomes insufficient.
一方、比較的表面粗度の大きい安価な金属板を高鮮映
性化粧金属板用の金属基板として用いるために、接着剤
層や印刷層を設けた透明な表層熱可塑性樹脂層を金属板
に積層した後、鏡面を有する仕上げロールで加熱圧接し
た高鮮映性積層金属板（特開平６−23909号公報）が提
案されている。On the other hand, in order to use an inexpensive metal plate with relatively large surface roughness as a metal substrate for a high-definition decorative metal plate, a transparent surface thermoplastic resin layer provided with an adhesive layer and a printed layer is used for the metal plate. There has been proposed a high-definition laminated metal sheet (Japanese Patent Application Laid-Open No. 6-23909) in which the laminated metal plates are heated and pressed by a finishing roll having a mirror surface.
しかし、ロールで加熱圧接する場合、加熱により表層
熱可塑性樹脂層にうねりがある程度発生することは避け
られず、必ずしも満足すべき高鮮映性が得られない。さ
らに局部的に存在する印刷パターンや濃淡のパターンに
よる凹凸が、透明な表層熱可塑性樹脂層の外側に凹凸と
して浮き出てしまうため、十分な鮮鋭性が得られないと
いう問題点があった。However, in the case where the rolls are heated and pressed by a roll, it is inevitable that the surface thermoplastic resin layer undulates to some extent due to heating, and satisfactory high definition is not necessarily obtained. Further, there is a problem that sufficient sharpness cannot be obtained because unevenness due to a locally existing print pattern or light and shade pattern is raised as unevenness outside the transparent surface thermoplastic resin layer.
本発明の課題は、前記の従来技術上の問題点に鑑み、
加工密着性に優れるとともに、鮮映性に優れた高鮮映性
樹脂被覆金属板を提供することにある。The object of the present invention is to solve the above-mentioned problems in the prior art,
An object of the present invention is to provide a high-definition resin coated metal plate having excellent processing adhesion and excellent clarity.
発明の開示 本発明は、中心線平均粗さ（Ra）が０μｍを越えて10
μｍ以下である表面粗度を有する金属板を基板とし、少
なくとも基板の片面に、基板側から順次に、着色塗料
層、軟質樹脂層、接着剤層、透明樹脂フィルムが積層さ
れた樹脂被覆金属基板であることを特徴とする。DISCLOSURE OF THE INVENTION The present invention relates to a method in which the center line average roughness (Ra) exceeds 10 μm.
A resin-coated metal substrate in which a metal plate having a surface roughness of not more than μm is used as a substrate, and a coloring paint layer, a soft resin layer, an adhesive layer, and a transparent resin film are sequentially laminated on at least one side of the substrate from the substrate side. It is characterized by being.
また本発明の樹脂被覆金属板においては、前記軟質樹
脂層が透明樹脂であり、かつ硬化剤を添加して後加熱に
より完全硬化する樹脂に、後加熱により完全に硬化しな
い程度に硬化剤を添加した樹脂からなる塗料を塗布して
後加熱し、硬化度を小さくして得られた軟質樹脂からな
る層であるか、またはポリエステル塗料を塗布した層で
あるか、またはポリオレフィンからなるフィルムである
ことを特徴とする。In the resin-coated metal plate of the present invention, the soft resin layer is a transparent resin, and a curing agent is added to the resin that is completely cured by post-heating, and a curing agent is added to such an extent that it is not completely cured by post-heating. A layer made of a soft resin obtained by applying a paint made of a cured resin and then heating to reduce the degree of curing, or a layer coated with a polyester paint, or a film made of polyolefin It is characterized by.
また、本発明の樹脂被覆金属板においては、前記接着
剤層が顔料を含有することを特徴とし、さらに前記顔料
が、金属粉末に、特にアルミニウム粉末であるか、また
は雲母粉末であることを特徴とする。Further, in the resin-coated metal plate of the present invention, the adhesive layer contains a pigment, and the pigment is a metal powder, particularly an aluminum powder, or a mica powder. And
さらにまた、本発明の樹脂被覆金属板においては、前
記透明樹脂フィルムが表裏面とも視覚的に鏡面を有して
いることを特徴とし、さらにポリエチレンテレフタレー
トを２軸延伸配向したフィルムであることを特徴とす
る。Furthermore, in the resin-coated metal plate of the present invention, the transparent resin film is characterized in that both the front and back surfaces have a visually specular surface, and furthermore, it is a film in which polyethylene terephthalate is biaxially stretched and oriented. And
またさらに、本発明の樹脂被覆金属板においては、前
記接着剤層と前記軟質樹脂層の間に柄印刷層、または柄
印刷層およびベタ印刷層を設けたか、または、前記接着
剤層と前記透明樹脂フィルムとの間に柄印刷層、または
柄印刷層およびベタ印刷層を設けたことを特徴とする。Still further, in the resin-coated metal plate of the present invention, a pattern printing layer, or a pattern printing layer and a solid printing layer are provided between the adhesive layer and the soft resin layer, or the adhesive layer and the transparent layer are provided. A pattern printing layer, or a pattern printing layer and a solid printing layer are provided between the resin film and the resin film.
図面の簡単な説明 図１は、本発明の樹脂被覆金属板の構成の一例を示
す、概略の断面図である。図２は、本発明の樹脂被覆金
属板の構成の他の一例を示す、概略の断面図である。図
３は、本発明の樹脂被覆金属板の構成のさらに他の一例
を示す、概略の断面図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic sectional view showing an example of the configuration of the resin-coated metal plate of the present invention. FIG. 2 is a schematic sectional view showing another example of the configuration of the resin-coated metal plate of the present invention. FIG. 3 is a schematic sectional view showing still another example of the configuration of the resin-coated metal plate of the present invention.
発明を実施するための最良の形態 本発明の高鮮映性樹脂被覆金属板は、金属板上に施し
た着色塗料層と最表面の表裏面とも視覚的に鏡面を有し
ている透明樹脂フィルムとの間に軟質樹脂層を設けたこ
とにより、軟質樹脂層が金属板の粗度、および金属板の
粗度に基づく凹凸を保持した着色塗料層の凹凸、または
印刷パターンや濃淡のパターンによる凹凸を、加熱圧接
時に軟質樹脂層が変形して吸収し、かつ一方では最表面
の視覚的に鏡面を有している透明樹脂フィルムの鏡面を
変形させることなく加熱圧接することが可能となり、極
めて高い鮮映性を有し、かつ張出し加工や深絞り加工の
ような厳しい加工を施しても上記の構成層の界面での剥
離が生じることがない、優れた加工密着性を有する。BEST MODE FOR CARRYING OUT THE INVENTION The high-definition resin-coated metal plate of the present invention is a transparent resin film in which a colored paint layer applied on the metal plate and both the front and rear surfaces of the outermost surface have a visually specular surface. By providing a soft resin layer between the soft resin layer and the roughness of the metal plate, and unevenness of the colored paint layer holding the unevenness based on the roughness of the metal plate, or unevenness due to printing pattern or light and shade pattern The soft resin layer is deformed and absorbed at the time of heating and pressing, and on the other hand, it is possible to heat and press without deforming the mirror surface of the transparent resin film having a visually mirror surface on the outermost surface, which is extremely high. It has sharpness and excellent adhesion to processing, which does not cause separation at the interface between the constituent layers even when subjected to severe processing such as stretching or deep drawing.
以下、本発明を詳細に説明する。 Hereinafter, the present invention will be described in detail.
図１〜図３は、樹脂被覆層を設けた場合の、樹脂被覆
金属板の片面側の構成を示す。図１は請求項１の発明に
対応し、Ａは透明樹脂フィルム、Ｂは接着剤層、Ｃは軟
質樹脂層、Ｄは着色塗料層、Ｓは金属板である。1 to 3 show a configuration on one side of a resin-coated metal plate when a resin coating layer is provided. FIG. 1 corresponds to the invention of claim 1, wherein A is a transparent resin film, B is an adhesive layer, C is a soft resin layer, D is a colored paint layer, and S is a metal plate.
図１において、Ａは透明樹脂フィルムであり、樹脂被
覆金属板の最外層を構成している。この透明樹脂フィル
ムは、押し出し法、カレンダー法、キャスト法等によ
り、またはキャスト後、１軸または２軸方向に延伸する
ことにより成膜されるが、本発明用途にはフィルムの表
裏面とも成膜後の表面粗度がRa maxで５μｍ以下の視覚
的な鏡面を有していることが、本発明の高鮮映性の樹脂
被覆金属板を得る上で不可欠の要素の一つである。成膜
後の表面粗度がRa maxで５μｍを越えて粗くなるとフィ
ルム表面で乱反射が生じ、鮮映性が損なわれる。In FIG. 1, A is a transparent resin film, which constitutes the outermost layer of the resin-coated metal plate. This transparent resin film is formed by an extrusion method, a calender method, a casting method, or the like, or by stretching in a uniaxial or biaxial direction after casting. Having a visual mirror surface with a surface roughness of 5 μm or less at Ra max is one of the indispensable factors for obtaining the highly luminous resin-coated metal plate of the present invention. If the surface roughness after film formation is rough exceeding 5 μm in Ramax, irregular reflection occurs on the film surface, and the sharpness is impaired.
透明樹脂フィルムの厚さは５〜100μｍであることが
好ましく、より好ましい下限の厚さは12μｍであり、よ
り好ましい上限の厚さは80μｍである。透明樹脂フィル
ムの厚さが５μｍ未満の場合は、樹脂被覆金属板全体と
しての鮮映性に劣り、しかもフィルム積層作業が極めて
困難になる。一方、100μｍを越えると樹脂被覆金属板
の加工密着性が乏しくなる。The thickness of the transparent resin film is preferably 5 to 100 μm, more preferably the lower limit thickness is 12 μm, and the more preferable upper limit thickness is 80 μm. When the thickness of the transparent resin film is less than 5 μm, the image quality of the resin-coated metal plate as a whole is poor, and the film laminating operation becomes extremely difficult. On the other hand, if it exceeds 100 μm, the processing adhesion of the resin-coated metal plate becomes poor.
この透明樹脂フィルムＡには、ポリエステル、ポリカ
ーボネート、ポリビニルアルコール、ポリプロピレン、
無可塑又は可塑化塩化ビニル樹脂、ポリメチルペンテ
ン、セルローストリアセーテト、セルロースジアセテー
トなどからなるフィルムが挙げられ、必要に応じて安定
剤、可塑剤を鮮映性が失われない程度に添加してもよ
い。ポリエステルフィルムとしては、ポリエチレンテレ
フタレートフィルム、およびエチレンテレフタレート単
位を主体とする共重合ポリエステル樹脂から成膜したフ
ィルムが含まれるが、中でもポリエチレンテレフタレー
トを２軸延伸配向したフィルムが、本発明の高鮮映性の
樹脂被覆金属板に用いるの透明樹脂フィルムとして、実
用的に好ましい。In this transparent resin film A, polyester, polycarbonate, polyvinyl alcohol, polypropylene,
Non-plasticized or plasticized vinyl chloride resin, polymethylpentene, cellulose triacetate, cellulose diacetate, and other films.If necessary, stabilizers and plasticizers may be added to the extent that sharpness is not lost. You may. Examples of the polyester film include a polyethylene terephthalate film and a film formed from a copolymerized polyester resin containing ethylene terephthalate units as a main component. It is practically preferable as the transparent resin film used for the resin-coated metal plate.
上記の樹脂被覆金属板を取り扱う際、および成形加工
する際の傷付き性やすべり性を改善するために、最外層
である透明樹脂フィルムＡの表層にシリコン系、フッ素
系、アクリル系、メラミン系、またはウレタン系の焼き
付け型、または紫外線硬化型塗料層をトップコートとし
て0.1〜50μｍ形成させることが好ましい。このトップ
コートのより好ましい下限の厚さは0.3μｍであり、よ
り好ましい上限の厚さは30μｍである。0.2μｍ未満の
場合は、干渉色が顕著となり、耐傷付き性も劣化する。
一方50μｍを越えると加工性が低下し、経済的にも劣
る。When handling the above-mentioned resin-coated metal plate, and in order to improve the scratchability and slipperiness during molding, a silicon-based, fluorine-based, acrylic-based, melamine-based is used on the outermost layer of the transparent resin film A. It is preferable that a baking-type or urethane-based coating layer of a urethane type is formed as a top coat with a thickness of 0.1 to 50 μm. The more preferable lower limit thickness of the top coat is 0.3 μm, and the more preferable upper limit thickness is 30 μm. When the thickness is less than 0.2 μm, the interference color becomes remarkable, and the scratch resistance deteriorates.
On the other hand, if it exceeds 50 μm, the workability is reduced and the economy is poor.
図１においてＢは接着剤層であり、接着剤としては、
ポリエステル系、アクリル系、ウレタン系、エポキシ
系、またはメラミン系の樹脂のいずれかを主成分とする
ものを含み、また上記の樹脂に、シランカップリング剤
などの接着効果を有する接着助剤を併用しても差し支え
ない。In FIG. 1, B is an adhesive layer, and as the adhesive,
Including polyester-based, acrylic-based, urethane-based, epoxy-based, or melamine-based resin as the main component, and the above-mentioned resin in combination with an adhesive aid having an adhesive effect such as a silane coupling agent No problem.
この接着剤層は透明であっても良いし、またこの接着
剤層の下層として設けられる着色塗料層の意匠性を高め
るために顔料を添加したものであってもよい。この接着
剤に含有させる顔料としては有機系、および無機系のい
ずれの顔料も使用可能であるが、特にこの接着剤層に金
属光沢を有するいわゆるメタリックな色調を付与する場
合は、塗料で着色した、または無着色の金属粉末、特に
アルミニウム粉末、または雲母粉末からなる顔料を用い
ることが好ましい。This adhesive layer may be transparent, or may be a layer to which a pigment is added in order to enhance the design of the colored paint layer provided as a lower layer of the adhesive layer. As the pigment to be contained in the adhesive, any of an organic pigment and an inorganic pigment can be used. Particularly, when giving a so-called metallic color having metallic luster to the adhesive layer, the pigment is colored with a paint. Alternatively, it is preferable to use a pigment comprising a non-colored metal powder, particularly an aluminum powder, or a mica powder.
これらの顔料の含有割合は、接着剤樹脂の固形分に対
して、重量比で１〜30％の範囲が好ましく、より好まし
くは３〜20％である。含有割合が１％未満では顔料によ
る色調（金属光沢）が得られず、30％を越えると顔料含
有接着剤層が脆くなり、厳しい加工を施した際に加工密
着性が不良となる。The content ratio of these pigments is preferably in the range of 1 to 30% by weight, more preferably 3 to 20%, based on the solid content of the adhesive resin. If the content is less than 1%, the color tone (metallic luster) of the pigment cannot be obtained, and if it exceeds 30%, the pigment-containing adhesive layer becomes brittle and the processing adhesion becomes poor when severe processing is performed.
これらの顔料の粒子の形状は、球状または鱗片状のい
ずれでもよく、粒径は平均粒径で0.1〜90μｍの範囲が
好ましく、より好ましくは１〜80μｍである。平均粒径
が0.1μｍ未満ではメタリックな色調に乏しく、100μｍ
を越えると鮮映性が低化する。The shape of the particles of these pigments may be spherical or scale-like, and the average particle diameter is preferably in the range of 0.1 to 90 μm, more preferably 1 to 80 μm. When the average particle size is less than 0.1 μm, the metallic color tone is poor and 100 μm
If it exceeds, the sharpness deteriorates.
上記の接着剤層の厚さは１〜50μｍの範囲が好まし
く、より好ましくは３〜30μｍである。接着剤層の厚さ
が１μｍ未満の場合は耐沸水性および加工密着性に劣
り、顔料を添加した場合は、顔料が塗料中への均一に分
散し難くなる。一方50μｍを越えると経済的に不利とな
り、顔料を添加した場合は、接着剤に含有されている残
留溶剤の影響で加熱時の表面外観が不良となり、このた
め鮮映性が低化する。The thickness of the above adhesive layer is preferably in the range of 1 to 50 μm, more preferably 3 to 30 μm. When the thickness of the adhesive layer is less than 1 μm, boiling water resistance and processing adhesion are poor, and when a pigment is added, the pigment is difficult to be uniformly dispersed in the paint. On the other hand, if it exceeds 50 μm, it is economically disadvantageous, and if a pigment is added, the surface appearance during heating becomes poor due to the effect of the residual solvent contained in the adhesive, and the sharpness is reduced.
図１においてＣは軟質樹脂層であり、本発明の優れた
加工密着性と高鮮映性を付与するための重要な構成要素
である。本発明においては、粗面の金属板を用いた場合
や、金属板の上に塗布する着色塗料が局部的に不均一な
厚さで塗布されていて凹凸を有する場合や、柄および／
またはベタ印刷層を設けた（そうすると凹凸が必然的に
形成される）透明樹脂フィルムを金属板に積層した場合
においても、この軟質樹脂層Ｃでこれらの凹凸を吸収さ
せることができる。In FIG. 1, C is a soft resin layer, which is an important component for imparting excellent processing adhesion and high definition in the present invention. In the present invention, when a rough metal plate is used, or when a colored paint applied on the metal plate is locally applied with a non-uniform thickness and has irregularities, a pattern and / or
Alternatively, even when a transparent resin film provided with a solid printing layer (which forms irregularities inevitably) is laminated on a metal plate, the soft resin layer C can absorb these irregularities.
すなわち、これらの金属板の粗度による凹凸や、着色
塗料層の凹凸や、印刷層の凹凸などが、透明樹脂フィル
ムＡの表面にまで浮き出てこないように、この軟質樹脂
層Ｃでこれらの凹凸を吸収させるのである。凹凸が透明
樹脂フィルムＡの表面にまで出てくると、乱反射を生じ
させることにより、鮮映性が損なわれるのである。That is, the unevenness due to the roughness of the metal plate, the unevenness of the colored paint layer, the unevenness of the printing layer, and the like do not appear on the surface of the transparent resin film A. Is absorbed. When the irregularities come to the surface of the transparent resin film A, irregular reflection is caused, thereby deteriorating the sharpness.
軟質樹脂層Ｃは、積層時に付加される加圧力により変
形し、透明樹脂フィルムＡの表面が金属基板、着色塗料
層、または印刷層の凹凸により変形することを防止す
る。The soft resin layer C is deformed by the pressing force applied at the time of lamination, and prevents the surface of the transparent resin film A from being deformed by unevenness of the metal substrate, the colored paint layer, or the printed layer.
一方、樹脂被覆金属板に張出し加工や深絞り加工のよ
うな厳しい加工を施しても、軟質樹脂層Ｃの界面で剥離
が生じることがない、優れた加工密着性も必要である。On the other hand, even when severe processing such as overhanging processing or deep drawing processing is performed on the resin-coated metal plate, excellent processing adhesion that does not cause peeling at the interface of the soft resin layer C is also required.
上記の必要とされる特性の鑑みて、本発明の軟質樹脂
層としては、例えば二液混合硬化型の樹脂を不完全に硬
化させた状態（未硬化状態）の樹脂があげられる。すな
わち、硬化剤を添加して後加熱により完全硬化する樹脂
に、後加熱により完全に硬化しない程度に硬化剤を添加
して後加熱し、不完全に硬化させて得られる軟質樹脂か
らなる層が軟質樹脂層として好適である。In view of the above-mentioned required properties, the soft resin layer of the present invention includes, for example, a resin obtained by incompletely curing a two-component mixed-curable resin (uncured state). In other words, a layer made of a soft resin obtained by adding a curing agent to a resin which is completely cured by post-heating, adding a curing agent to such an extent that the post-heating does not completely cure the resin, post-heating, and incompletely curing the resin. It is suitable as a soft resin layer.
あるいは、軟質樹脂からなるフィルムの層なども好適
に用いられる。これらの軟質樹脂層は、透明な層であっ
てもよいし、顔料を添加して不透明、あるいは半透明な
層としてもよいが、下層に設けられる表面処理層の意匠
を活かすには、透明な層であることが好ましい。Alternatively, a layer of a film made of a soft resin is preferably used. These soft resin layers may be transparent layers, may be opaque by adding a pigment, or may be a translucent layer.To take advantage of the design of the surface treatment layer provided below, It is preferably a layer.
軟質樹脂層Ｃを不完全硬化樹脂で構成する場合、使用
する樹脂としては、ポリエステル、アクリル、ウレタ
ン、エポキシ、またはメラミンいずれかの樹脂を主成分
とするものを含むが、特にポリエステル樹脂を主成分と
した場合に、極めて優れた加工密着性、および鮮映性が
得られ、好ましい。ポリエステル樹脂を用いる場合は硬
化剤としてウレタン系樹脂を用い、ポリエステル樹脂10
0重量％に対して硬化剤を0.5〜15重量％の割合で混合
し、金属基板上に形成された表面処理層の上に塗布した
後、230〜280℃で0.3〜２分間後加熱して半硬化させ
る。硬化剤が0.5重量％未満の場合は、金属板との十分
な加工密着性が得られない。一方、硬化剤が15重量％を
越え、20重量％以下の場合は優れた加工密着性が得られ
るが、樹脂の硬化が大となり、金属基板、および／また
は印刷層の凹凸を吸収できなくなる。さらに、硬化剤が
20重量％を越えると樹脂が硬化し過ぎて脆化し、加工密
着性も低下するようになる。When the soft resin layer C is made of an incompletely cured resin, the resin used includes a resin mainly composed of polyester, acrylic, urethane, epoxy, or melamine. In this case, extremely excellent processing adhesion and sharpness are obtained, which is preferable. When a polyester resin is used, a urethane resin is used as a curing agent, and the polyester resin 10
A curing agent is mixed at a ratio of 0.5 to 15% by weight with respect to 0% by weight, applied on a surface treatment layer formed on a metal substrate, and then heated at 230 to 280 ° C. for 0.3 to 2 minutes. Semi-cured. If the amount of the curing agent is less than 0.5% by weight, sufficient working adhesion to a metal plate cannot be obtained. On the other hand, when the amount of the curing agent is more than 15% by weight and not more than 20% by weight, excellent processing adhesion can be obtained, but the curing of the resin becomes large, and the unevenness of the metal substrate and / or the printing layer cannot be absorbed. In addition, the curing agent
If the content is more than 20% by weight, the resin is excessively hardened and becomes brittle, so that the processing adhesion is lowered.
軟質樹脂層を軟質樹脂フィルムで構成する場合、使用
する樹脂フィルムとしてはエラストマーをブレンドし、
樹脂を軟質化したポリエステル樹脂からなるフィルム、
カルボキシル基、水酸基、加水分解性基、酸無水物等の
官能基の少なくとも１種を分子内に含有させて変性した
ポリオレフィン樹脂からなるフィルム、公知の可塑剤を
添加して軟質化したポリ塩化ビニル樹脂からなるフィル
ムなどが挙げられるが、ポリオレフィン樹脂からなるフ
ィルム、またはポリ塩化ビニル樹脂からなるフィルムが
本発明の樹脂被覆金属板の軟質樹脂層Ｃとして好まし
い。When the soft resin layer is composed of a soft resin film, an elastomer is blended as a resin film to be used,
A film made of polyester resin softened resin,
A film made of a polyolefin resin modified by containing at least one functional group such as a carboxyl group, a hydroxyl group, a hydrolyzable group, and an acid anhydride in a molecule, and a polyvinyl chloride softened by adding a known plasticizer. Although a film made of a resin may be used, a film made of a polyolefin resin or a film made of a polyvinyl chloride resin is preferable as the soft resin layer C of the resin-coated metal plate of the present invention.
上記の軟質樹脂層Ｃの厚さは、10〜100μｍの範囲が
好ましく、より好ましくは20〜70μｍである。厚さが10
μｍ未満になると金属板、および／または印刷層の凹凸
を完全に吸収できなくなり、樹脂被覆金属板全体として
の鮮映性が低下する。一方、100μｍを越えると樹脂被
覆金属板全体としての表面硬度や加工密着性が低下す
る。The thickness of the soft resin layer C is preferably in the range of 10 to 100 μm, more preferably 20 to 70 μm. Thickness 10
When the thickness is less than μm, the unevenness of the metal plate and / or the printing layer cannot be completely absorbed, and the sharpness of the resin-coated metal plate as a whole deteriorates. On the other hand, if it exceeds 100 μm, the surface hardness and working adhesion of the resin-coated metal plate as a whole decrease.
なお、軟質樹脂層Ｃとして軟質樹脂フィルムを用いた
場合は、軟質樹脂フィルムの上層または下層（あるいは
上下両層）に、シランカップリング剤等でアンカー処理
を施して積層する樹脂（フィルム）層間の接着力を向上
させることも可能である。When a soft resin film is used as the soft resin layer C, an upper layer or a lower layer (or both upper and lower layers) of the soft resin film is subjected to an anchoring treatment with a silane coupling agent or the like and laminated between resin (film) layers. It is also possible to improve the adhesive strength.
図１においてＤは着色塗料層である。この着色塗料層
は意匠としての着色層を構成するための層となる。使用
される塗料用樹脂としては、ポリエステル、アクリル、
ウレタン、エポキシ、またはメラミンのいずれかの樹脂
を主成分とするものを含むが、特にポリエステル樹脂を
主成分とした場合に極めて優れた加工密着性が得られ、
好ましい。この塗料に含有される顔料としては公知の有
機系、および無機系のいずれの顔料も使用可能である。In FIG. 1, D is a colored paint layer. This colored paint layer is a layer for constituting a colored layer as a design. As paint resins used, polyester, acrylic,
Urethane, epoxy, or those containing melamine as the main component, but very excellent processing adhesion is obtained especially when the polyester resin is the main component,
preferable. As the pigment contained in this coating material, any of known organic and inorganic pigments can be used.
顔料の含有割合は、塗料用樹脂の固形分に対して、重
量比で１〜30％の範囲が好ましく、より好ましくは３〜
20％である。含有割合が１％未満では顔料による色調が
得られず、30％を越えると着色塗料層が脆くなり、厳し
い加工を施した際に加工密着性が不良となる。The content of the pigment is preferably in the range of 1 to 30% by weight, more preferably 3 to 30% by weight, based on the solid content of the coating resin.
20%. If the content is less than 1%, the color tone of the pigment cannot be obtained, and if it exceeds 30%, the colored paint layer becomes brittle and the processing adhesion becomes poor when severe processing is performed.
これらの顔料の粒子の形状は、球状または鱗片状のい
ずれでもよく、粒径は平均粒径で0.1〜100μｍの範囲が
好ましく、より好ましくは１〜80μｍである。平均粒径
が0.1μｍ未満では取り扱いが著しく困難であり、100μ
ｍを越えると塗装性が不良となり、鮮映性が低化する。The shape of the particles of these pigments may be spherical or scaly, and the average particle size is preferably in the range of 0.1 to 100 μm, more preferably 1 to 80 μm. If the average particle size is less than 0.1 μm, it is extremely difficult to handle
If it exceeds m, the paintability will be poor and the sharpness will be reduced.
上記の顔料を含有する着色塗料層Ｄの厚さは１〜60μ
ｍの範囲が好ましく、より好ましくは３〜30μｍであ
る。着色塗料層Ｄの厚さが１μｍ未満の場合は顔料によ
る隠蔽が不完全となる。一方、60μｍを越えると経済的
に不利となる。The thickness of the color coating layer D containing the pigment is 1 to 60 μm.
m is preferable, and more preferably 3 to 30 μm. When the thickness of the coloring paint layer D is less than 1 μm, the hiding by the pigment becomes incomplete. On the other hand, if it exceeds 60 μm, it is economically disadvantageous.
また、この着色塗料層Ｄには、２層以上で構成される
ものも含まれる。すなわち、金属基板の耐食性を向上さ
せるために、防錆顔料を含む下塗り層を有する複層とし
て形成されたものも含まれる。Further, the colored paint layer D includes a layer composed of two or more layers. That is, it includes a metal substrate formed as a multilayer having an undercoat layer containing a rust-preventive pigment in order to improve the corrosion resistance of the metal substrate.
図１においてＳは基板としての金属板である。この金
属板には鋼板、ステンレス鋼板、亜鉛めっき鋼板、合金
亜鉛めっき鋼板、複合亜鉛めっき鋼板、ニッケルめっき
鋼板、およびこれらのめっき鋼板に公知のクロム酸処
理、リン酸クロム酸処理、電解クロム酸処理等の化成処
理を施しためっき鋼板、ティンフリースチール等の鋼板
表面に直接化成処理を施した表面処理鋼板、さらにアル
ミニウム合金板、銅板のような非鉄金属板、およびこれ
らの非鉄金属板に上記の化成処理を施した非鉄金属板も
含まれる。In FIG. 1, S is a metal plate as a substrate. This metal sheet is a steel sheet, a stainless steel sheet, a galvanized steel sheet, an alloy galvanized steel sheet, a composite galvanized steel sheet, a nickel-plated steel sheet, and a known chromic acid treatment, chromic phosphate treatment, electrolytic chromic acid treatment for these plated steel sheets. Such as plated steel sheet subjected to chemical conversion treatment, surface treated steel sheet subjected to direct chemical conversion treatment on steel sheet surface such as tin-free steel, aluminum alloy plate, non-ferrous metal plate such as copper plate, and these non-ferrous metal plates A non-ferrous metal plate subjected to a chemical conversion treatment is also included.
さらに、本発明においては、上記の金属板が、中心線
平均粗さ（Ra）が０μｍを越えて10μｍ以下である表面
粗度を有することが不可欠である。金属板のRaが０μｍ
である鏡面を有する場合は金属板Ｓ上に形成される着色
塗料層Ｄに対するアンカー効果が得られず、加工密着性
が不十分となる。またRaが０μｍである鏡面を有する金
属板の製造は、前述したように極めて生産性に乏しく、
高価な材料とならざるを得ない。Further, in the present invention, it is essential that the metal plate has a surface roughness whose center line average roughness (Ra) is more than 0 μm and 10 μm or less. Ra of metal plate is 0μm
In the case of having a mirror surface, the anchor effect on the colored paint layer D formed on the metal plate S cannot be obtained, and the processing adhesion becomes insufficient. Further, the production of a metal plate having a mirror surface with Ra of 0 μm is extremely poor in productivity as described above,
It has to be an expensive material.
一方、上記の金属板のRaが10μｍを越える場合は、金
属板の粗面による凹凸が軟質樹脂層Ｂで完全に吸収する
ことが不可能となり、鮮映性が低下する。より好ましい
Raの範囲は0.1〜２μｍである。On the other hand, when Ra of the above-mentioned metal plate exceeds 10 μm, the unevenness due to the rough surface of the metal plate cannot be completely absorbed by the soft resin layer B, and the sharpness deteriorates. More preferred
The range of Ra is 0.1 to 2 μm.
図２は請求項12の発明に対応し、前記接着剤層Ｂと前
記軟質樹脂層Ｃの間に柄およびまたはベタ印刷層を設け
たこと以外は、図１の構成層と同様である。FIG. 2 corresponds to the invention of claim 12, and is the same as the constituent layer of FIG. 1 except that a pattern and / or solid printing layer is provided between the adhesive layer B and the soft resin layer C.
図３は請求項13の発明に対応し、前記接着剤層Ｂと前
記透明樹脂フィルムＡの間に柄およびまたはベタ印刷層
を設けたこと以外は、図１の構成層と同様である。FIG. 3 corresponds to the invention of claim 13, and is the same as the constituent layer of FIG. 1 except that a pattern and / or a solid printing layer is provided between the adhesive layer B and the transparent resin film A.
次に、本発明の高鮮映性樹脂被覆金属板の製造方法に
ついて説明する。Next, the method for producing the high-definition resin-coated metal plate of the present invention will be described.
（１）軟質樹脂層の形成 図１に示した（請求項１に記載）被覆金属板の場合
は、金属板Ｓの表面に顔料を含有する塗料をロールコー
ト法などにより、１回または２回塗りし、着色塗料層Ｄ
を形成させる。塗料層を厚くしたい場合は、さらに塗り
回数を増やす。そして、さらにその上に軟質樹脂層Ｃを
設ける。軟質樹脂層Ｃが塗料として塗布される場合は、
硬化剤を添加して後加熱により完全硬化する樹脂に、後
加熱により完全に硬化しない程度に硬化剤を添加した樹
脂からなる塗料を塗布し乾燥させた後、後加熱する。ま
た、軟質樹脂層Ｃが軟質樹脂からなるフィルムの場合
は、軟質樹脂を押し出し、フィルム化して積層するか、
または前記の着色塗料層Ｄを形成した塗装金属板を加熱
し、軟質樹脂を成膜したフィルムを前記の加熱した塗装
金属板に接触させ、１対のラミネートロールで挟みつけ
て圧着して積層し軟質樹脂層Ｃを形成させる。(1) Formation of Soft Resin Layer In the case of the coated metal plate shown in FIG. 1 (described in claim 1), a paint containing a pigment is coated once or twice on the surface of the metal plate S by a roll coating method or the like. Coating and coloring paint layer D
Is formed. To increase the thickness of the paint layer, increase the number of coatings. Then, a soft resin layer C is further provided thereon. When the soft resin layer C is applied as a paint,
After a curing agent is added to the resin that is completely cured by post-heating, a coating made of a resin to which the curing agent is added to such an extent that the resin is not completely cured by post-heating is applied and dried, followed by post-heating. When the soft resin layer C is a film made of a soft resin, the soft resin is extruded, formed into a film, and laminated.
Alternatively, the coated metal plate on which the colored paint layer D is formed is heated, and the film on which the soft resin is formed is brought into contact with the heated coated metal plate, sandwiched between a pair of laminating rolls, and pressed and laminated. The soft resin layer C is formed.
（２）被覆用樹脂フィルムの作成 図１に示した（請求項１に記載）被覆樹脂フィルムの
場合は、透明樹脂フィルムＡ上に金属粉末、特にアルミ
ニウム粉末、または雲母粉末からなる顔料を添加した、
または無添加の接着剤を塗布し乾燥させ接着剤層Ｂを形
成させる。(2) Preparation of Resin Film for Coating In the case of the coated resin film shown in FIG. 1 (described in claim 1), a pigment made of metal powder, particularly aluminum powder or mica powder was added to transparent resin film A. ,
Alternatively, an additive-free adhesive is applied and dried to form an adhesive layer B.
図２に示した（請求項12に記載）被覆樹脂フィルムの
場合は、透明樹脂フィルムＡ上に金属粉末、特にアルミ
ニウム粉末、または雲母粉末からなる顔料を添加した、
または無添加の接着剤を塗布し乾燥させ接着剤層Ｂを形
成させた後、柄印刷層P2、または柄印刷層P2およびベタ
印刷層P1を施す。In the case of the coated resin film shown in FIG. 2 (described in claim 12), a pigment made of a metal powder, particularly an aluminum powder, or a mica powder was added to the transparent resin film A,
Alternatively, after applying an additive-free adhesive and drying to form an adhesive layer B, the pattern printing layer P2, or the pattern printing layer P2 and the solid printing layer P1 are applied.
図３に示した（請求項13に記載）被覆樹脂フィルムの
場合は、透明樹脂フィルムＡ上に柄印刷層P2、または柄
印刷層P2およびベタ印刷層P1を形成させた後、上述した
ように金属粉末、特にアルミニウム粉末、または雲母粉
末からなる顔料を添加した、または無添加の接着剤を塗
布し乾燥させ、接着剤層Ｂを形成させる。In the case of the coated resin film shown in FIG. 3 (described in claim 13), after forming the pattern printing layer P2 or the pattern printing layer P2 and the solid printing layer P1 on the transparent resin film A, as described above. An adhesive to which a pigment made of a metal powder, particularly an aluminum powder or a mica powder is added or not added is applied and dried to form an adhesive layer B.
（３）積層 上記のようにして得られた軟質樹脂被覆金属板を加熱
した後、前記被覆用樹脂フィルムを前記軟質樹脂被覆金
属板に接触させ、１対のラミネートロールで挟みつけて
圧着し、さらに加熱を行い、１対の鏡面ロールで挟みつ
けて加圧し、冷却する。(3) Lamination After heating the soft resin-coated metal plate obtained as described above, the resin film for coating is brought into contact with the soft resin-coated metal plate, sandwiched by a pair of laminating rolls, and pressed. Heating is further performed, the sheet is sandwiched between a pair of mirror rolls, pressurized, and cooled.
ラミネートロールで挟みつけて圧着する際のロール圧
は１〜80kg/cm2の範囲が好ましく、より好ましくは５〜
60kg/cm2である。ロール圧が5kg/cm2未満では被覆樹脂
フィルムが金属板の幅方向に均一に圧着されず、表面外
観（鮮映性）にバラツキを生じる。一方、60kg/cm2を越
えるとラミネートロールの摩耗が著しくなり、頻繁にラ
ミネートロールを交換しなくてはならなくなり、生産性
が低下する。Roll pressure when sandwiching and pressing with a laminating roll is preferably in the range of 1 to 80 kg / cm 2 , more preferably 5 to 80 kg / cm 2.
It is 60 kg / cm 2 . When the roll pressure is less than 5 kg / cm 2 , the coated resin film is not pressed uniformly in the width direction of the metal plate, and the surface appearance (sharpness) varies. On the other hand, when it exceeds 60 kg / cm 2 , the abrasion of the laminating roll becomes remarkable, and the laminating roll must be replaced frequently, and the productivity is reduced.
（実施例１） 軟質樹脂層の形成 板厚:0.5mm、めっき量:12g/m2、クロメート皮膜量
（クロムとして）:0.08g/dm2、平均表面粗さRa:0.55μ
ｍを有する電気亜鉛めっき鋼板に、白色顔料を有する共
重合ポリエステル系の塗料を12μｍ塗布し乾燥した。さ
らにその上に透明のポリエステル樹脂100重量部、硬化
剤としてウレタン系樹脂を３重量部添加混合したものを
10μｍ塗布し乾燥した後、260℃で１分間焼き付けて軟
質樹脂層を有する金属板を作成した。(Example 1) Formation of soft resin layer Sheet thickness: 0.5 mm, plating amount: 12 g / m 2 , chromate film amount (as chromium): 0.08 g / dm 2 , average surface roughness Ra: 0.55 μ
12 μm of a copolyester-based paint having a white pigment was applied to an electrogalvanized steel sheet having a thickness of m and dried. Further, 100 parts by weight of a transparent polyester resin and 3 parts by weight of a urethane-based resin as a curing agent were added and mixed.
After applying 10 μm and drying, it was baked at 260 ° C. for 1 minute to prepare a metal plate having a soft resin layer.
被覆用樹脂フィルムの作成 予めトップコートとしてアクリル系の樹脂を３μｍの
厚さで塗布した厚さ:25μｍ、表面粗度Ra:0.8μｍの２
軸延伸配向した透明なポリエチレンテレフタレートフィ
ルムに平均粒径:3μｍの黄金色に着色した鱗片状のアル
ミニウム粉からなる顔料を樹脂固形分に対して15重量部
含有する共重合ポリエステル系の接着剤を10μｍの厚さ
で塗布し乾燥し、被覆用樹脂フィルムとした。Preparation of resin film for coating Acrylic resin was applied as a top coat in a thickness of 3 μm beforehand. The thickness: 25 μm, the surface roughness Ra: 0.8 μm
Axial stretching oriented transparent polyethylene terephthalate film Average particle size: 10 μm of a copolyester adhesive containing 15 parts by weight of a pigment consisting of a scale-like aluminum powder colored in golden color of 3 μm with respect to the resin solid content And dried to obtain a resin film for coating.
積層 前記の軟質樹脂層を有する金属板を200℃に加熱し、
前記被覆用樹脂フィルムと接触させ、１対のラミネート
ロールを用い、20kg/cm2の加圧力で挟みつけて圧着し、
さらに200℃温度で、１対の鏡面ロールで挟みつけて加
圧し冷却し、樹脂被覆金属板を作成した。Heating the metal plate having the laminated soft resin layer to 200 ° C.,
Contacted with the resin film for coating, using a pair of laminating rolls, sandwiched and pressed with a pressing force of 20 kg / cm 2 ,
Further, at a temperature of 200 ° C., it was sandwiched between a pair of mirror-surface rolls, pressurized and cooled to prepare a resin-coated metal plate.
評価 上記のようにして得られた樹脂被覆金属板の特性を、
下記の評価基準で評価した。Evaluation The characteristics of the resin-coated metal plate obtained as described above,
Evaluation was made according to the following evaluation criteria.
ｉ）鮮映性 携帯用鮮明度光沢計PGD−４型（財団法人日本色彩研
究所製）を用い、写像鮮映性、すなわち、化粧面に写し
た正反射像の鮮明度を測定した。この測定値が高いもの
ほど鮮映性が優れている。i) Sharpness Using a portable sharpness gloss meter PGD-4 (manufactured by Japan Color Research Institute), the sharpness of the image, that is, the sharpness of the regular reflection image transferred to the decorative surface was measured. The higher the measured value, the better the sharpness.
ii）加工密着性 加工密着性については下記の２種類のテストを実施
し、両テストの測定結果を総合的に判断し、良否を評価
した。ii) Processing Adhesion For the processing adhesion, the following two types of tests were carried out, and the measurement results of both tests were comprehensively judged, and the quality was evaluated.
ａ）エリクセン張り出しテスト 樹脂被覆金属板の樹脂被覆面に、カッターナイフで金
属基板に達する疵を碁盤目状に形成した後、裏面よりエ
リクセン張り出し試験機にて8mmの張り出し加工した。
その後、100℃で１時間加熱し、加熱後の樹脂の剥離状
態を目視評価した。a) Erichsen overhang test A flaw reaching the metal substrate was formed in a grid pattern on the resin-coated surface of the resin-coated metal plate with a cutter knife, and then 8 mm was overhanged from the back surface using an Erichsen overhang tester.
Then, it heated at 100 degreeC for 1 hour, and the peeling state of the resin after a heating was evaluated visually.
ｂ）カップ深絞り加工テスト 山田式深絞り試験機にて樹脂被覆金属板を絞り比2.2
でカップ状に深絞り加工した後、カップ円筒部を形成し
ている樹脂被覆面にカッターナイフで金属基板に達する
疵を5mm間隔で形成した。その後、100℃で１時間加熱
し、加熱後の樹脂の剥離状態を目視評価した。b) Cup deep drawing test A resin-coated metal plate was drawn with a Yamada deep drawing tester at a drawing ratio of 2.2.
After deep-drawing into a cup shape by using, flaws reaching the metal substrate were formed at intervals of 5 mm on the resin-coated surface forming the cup cylindrical portion with a cutter knife. Then, it heated at 100 degreeC for 1 hour, and the peeling state of the resin after a heating was evaluated visually.
上記のようにして得られた樹脂被覆金属板の鮮映性を
表す数値は0.8を示し優れており、加工密着性も優れて
いた。The numerical value representing the sharpness of the resin-coated metal plate obtained as described above was 0.8, which was excellent, and the processing adhesion was also excellent.
（比較例１） 実施例１と同様の電気亜鉛めっき鋼板に、実施例１と
同様の白色顔料を有する共重合ポリエステル系の塗料を
12μｍ塗布し乾燥した。さらにその上に透明のポリエス
テル樹脂100重量部、硬化剤としてウレタン系樹脂を17
重量部添加混合したものを10μｍ塗布し乾燥した後、28
0℃で0.3分間焼き付けて樹脂層を形成した。この樹脂層
に、実施例１と同様の被覆用樹脂フィルムを実施例１と
同様の条件で積層し、樹脂被覆金属板を作成した。この
ようにして得られた樹脂被覆金属板の特性を、実施例１
に示したのと同一の評価方法で評価した。その結果、樹
脂被覆金属板の加工密着性は優れていたが、鮮映性を表
す数値は0.1を示し、不良であった。(Comparative Example 1) On the same galvanized steel sheet as in Example 1, a copolymer polyester-based paint having the same white pigment as in Example 1 was coated.
12 μm was applied and dried. Further, 100 parts by weight of a transparent polyester resin and a urethane resin as a curing agent were further added thereto.
After adding and mixing 10 parts by weight of the mixture by weight and drying, 28
Baking was performed at 0 ° C. for 0.3 minutes to form a resin layer. On this resin layer, the same resin film for coating as in Example 1 was laminated under the same conditions as in Example 1 to prepare a resin-coated metal plate. The characteristics of the resin-coated metal plate obtained in this manner were evaluated in Example 1.
The evaluation was performed by the same evaluation method as described above. As a result, the processing adhesion of the resin-coated metal plate was excellent, but the numerical value representing the sharpness was 0.1, which was poor.
（実施例２） 軟質樹脂層の形成 板厚:0.5mm、めっき量:14g/m2、クロメート皮膜量
（クロムとして）:0.07g/dm2、平均表面粗さRa:8.5μｍ
を有する電気亜鉛めっき鋼板に、白色顔料を有する共重
合ポリエステル系の塗料を５μｍ塗布し乾燥した。この
塗装金属板を200℃に加熱し、厚さ100μｍの透明のマレ
イン酸変性したポリエチレンフィルムを接触させ、１対
のラミネートロールを用い、20kg/cm2の加圧力で挟みつ
けて圧着して冷却し、軟質樹脂層を有する金属板を作成
した。(Example 2) Formation of soft resin layer Plate thickness: 0.5 mm, plating amount: 14 g / m 2 , chromate film amount (as chromium): 0.07 g / dm 2 , average surface roughness Ra: 8.5 μm
Was coated with 5 μm of a copolyester-based coating material having a white pigment and dried. Heating the coated metal plate 200 ° C., it is brought into contact with polyethylene film and maleated transparent thick 100 [mu] m, using a pair laminating rolls, cooled and compression and sandwiched under a pressure of 20 kg / cm 2 Then, a metal plate having a soft resin layer was prepared.
被覆用樹脂フィルムの作成 予めトップコートとしてフッ素系の樹脂を１μｍの厚
さで塗布した厚さ:20μｍ、表面粗度Ra:0.8μｍの２軸
延伸配向した透明なポリエチレンテレフタレートフィル
ムに、平均粒径:3μｍの鱗片状のアルミニウム粉からな
る顔料を樹脂固形分に対して20重量部含有する共重合ポ
リエステル系の接着剤塗料を12μｍ塗布し乾燥し、被覆
用樹脂フィルムとした。Preparation of resin film for coating A fluorine-based resin was applied as a top coat in a thickness of 1 μm in advance. The thickness was 20 μm, and the surface roughness Ra was 0.8 μm. 12 μm of a copolyester adhesive paint containing 20 parts by weight of a pigment composed of 3 μm scale-like aluminum powder with respect to the resin solid content was applied and dried to obtain a resin film for coating.
積層 前記の軟質樹脂層をさせた金属板を200℃に加熱し、
前記被覆用樹脂フィルムに接触させ、１対のラミネート
ロールを用い、20kg/cm2の加圧力で挟みつけて圧着し、
さらに200℃温度で、１対の鏡面ロールで挟みつけて加
圧し冷却し、樹脂被覆金属板を作成した。Heating the metal plate on which the soft resin layer has been laminated to 200 ° C.,
It was brought into contact with the resin film for coating, using a pair of laminating rolls, sandwiched and pressed with a pressing force of 20 kg / cm 2 ,
Further, at a temperature of 200 ° C., it was sandwiched between a pair of mirror-surface rolls, pressurized and cooled to prepare a resin-coated metal plate.
このようにして得られた樹脂被覆金属板の特性を、実
施例１に示したのと同一の評価方法で評価した。その結
果、樹脂被覆金属板の鮮映性を表す数値は1.0を示し優
れており、加工密着性も優れていた。The characteristics of the resin-coated metal plate thus obtained were evaluated by the same evaluation method as that shown in Example 1. As a result, the numerical value representing the sharpness of the resin-coated metal plate was 1.0, which was excellent, and the processing adhesion was also excellent.
（比較例２） 実施例２と同様の電気亜鉛めっき鋼板に、実施例２と
同様の白色顔料を有する共重合ポリエステル系の塗料を
５μｍ塗布し乾燥した。この塗装金属板を200℃に加熱
し、厚さ100μｍのポリエチレンフィルムを接触させ、
１対のラミネートロールを用い、20kg/cm2の加圧力で挟
みつけて圧着して冷却し、透明樹脂被覆金属板を作成し
た。この透明樹脂被覆金属板に実施例１と同様の被覆用
樹脂フィルムを実施例１と同様の条件で積層し、樹脂被
覆金属板を作成した。このようにして得られた樹脂被覆
金属板の特性を、実施例１に示したのと同一の評価方法
で評価した。その結果、樹脂被覆金属板の鮮映性を表す
数値は0.9を示し優れていたが、加工密着性は不良であ
った。(Comparative Example 2) To the same galvanized steel sheet as in Example 2, a 5 μm copolymer polyester paint having the same white pigment as in Example 2 was applied and dried. This coated metal plate is heated to 200 ° C, and a polyethylene film having a thickness of 100 μm is contacted,
Using a pair of laminating rolls, they were sandwiched with a pressing force of 20 kg / cm 2 , pressed and cooled to form a transparent resin-coated metal plate. A resin film for coating similar to that of Example 1 was laminated on this transparent resin-coated metal plate under the same conditions as in Example 1 to prepare a resin-coated metal plate. The characteristics of the resin-coated metal plate thus obtained were evaluated by the same evaluation method as that shown in Example 1. As a result, the numerical value representing the sharpness of the resin-coated metal plate was 0.9, which was excellent, but the processing adhesion was poor.
（実施例３） 軟質樹脂層の形成 板厚:0.5mm、めっき量:15g/m2、クロメート皮膜量
（クロムとして）:0.06g/dm2、平均表面粗さRa:0.1μｍ
を有する電気亜鉛めっき鋼板に、赤色顔料を有する共重
合ポリエステル系の塗料を10μｍ塗布し乾燥した。この
塗装金属板を200℃に加熱し、厚さ50μｍの透明のポリ
塩化ビニルフィルムを接触させ、１対のラミネートロー
ルを用い、20kg/cm2の加圧力で挟みつけて圧着して冷却
し、軟質樹脂層を有する金属板を作成した。(Example 3) Formation of soft resin layer Plate thickness: 0.5 mm, plating amount: 15 g / m 2 , chromate film amount (as chromium): 0.06 g / dm 2 , average surface roughness Ra: 0.1 μm
Was coated with 10 μm of a copolymerized polyester based paint having a red pigment and dried. This coated metal plate is heated to 200 ° C., brought into contact with a transparent polyvinyl chloride film having a thickness of 50 μm, sandwiched with a pair of laminating rolls at a pressure of 20 kg / cm 2 , pressed and cooled, and cooled. A metal plate having a soft resin layer was prepared.
被覆用樹脂フィルムの作成 予めトップコートとしてメラミン系の樹脂を４μｍの
厚さで塗布した厚さ:25μｍ、表面粗度Ra:0.8μｍの２
軸延伸配向した透明なポリエチレンテレフタレートフィ
ルムに、平均粒径:2μｍの鱗片状の雲母粉からなる顔料
を樹脂固形分に対して20重量部含有する共重合ポリエス
テル系の接着剤塗料を10μｍ塗布し乾燥し、被覆用樹脂
フィルムとした。Preparation of resin film for coating A melamine-based resin was applied as a top coat in a thickness of 4 μm in advance. The thickness was 25 μm, and the surface roughness Ra was 0.8 μm.
10 μm of a copolyester adhesive coating containing 20 parts by weight of a pigment composed of flaky mica powder having an average particle size of 2 μm with respect to the resin solid content is applied to 10 μm of a transparent polyethylene terephthalate film which is oriented in an axial direction and dried. Then, a resin film for coating was obtained.
前記の軟質樹脂層を形成させた金属板を200℃に加熱
し、前記被覆用樹脂フィルムに接触させ、１対のラミネ
ートロールを用い、20kg/cm2の加圧力で挟みつけて圧着
し、さらに200℃温度で、１対の鏡面ロールで挟みつけ
て加圧し冷却し、樹脂被覆金属板を作成した。The metal plate on which the soft resin layer is formed is heated to 200 ° C., brought into contact with the coating resin film, and pressed and pressed with a pair of laminating rolls at a pressing force of 20 kg / cm 2 , and At a temperature of 200 ° C., the resin was sandwiched between a pair of mirror rolls, pressurized and cooled to form a resin-coated metal plate.
このようにして得られた樹脂被覆金属板の特性を、実
施例１に示したのと同一の評価方法で評価した。その結
果、樹脂被覆金属板の鮮映性を表す数値は0.9を示し優
れており、加工密着性も優れていた。The characteristics of the resin-coated metal plate thus obtained were evaluated by the same evaluation method as that shown in Example 1. As a result, the numerical value representing the sharpness of the resin-coated metal plate was 0.9, which was excellent, and the processing adhesion was also excellent.
（比較例３） 板厚:0.5mm、めっき量:15g/m2、クロメート皮膜量
（クロムとして）:0.06g/dm2、平均表面粗さRa:11.5μ
ｍを有する電気亜鉛めっき鋼板に、赤色顔料を有する共
重合ポリエステル系の塗料を10μｍ塗布し乾燥した。さ
らにその上に実施例３と同様の透明なポリ塩化ビニルフ
ィルムを実施例３と同様の条件で積層し、樹脂被覆金属
板を作成した。この樹脂被覆金属板に、実施例３と同様
の被覆用樹脂フィルムを実施例３と同様の条件で積層
し、樹脂被覆金属板を作成した。このようにして得られ
た樹脂被覆金属板の特性を、実施例１に示したのと同一
の評価方法で評価した。その結果、樹脂被覆金属板の加
工密着性は優れていたが、鮮映性を表す数値は0.1を示
し、不良であった。(Comparative Example 3) Plate thickness: 0.5 mm, plating amount: 15 g / m 2 , chromate film amount (as chromium): 0.06 g / dm 2 , average surface roughness Ra: 11.5 μ
A 10 μm coating of a polyester copolymer having a red pigment was applied to an electrogalvanized steel sheet having a thickness of 10 m and dried. Further, a transparent polyvinyl chloride film similar to that in Example 3 was laminated thereon under the same conditions as in Example 3 to prepare a resin-coated metal plate. The same resin film for coating as in Example 3 was laminated on this resin-coated metal plate under the same conditions as in Example 3 to prepare a resin-coated metal plate. The characteristics of the resin-coated metal plate thus obtained were evaluated by the same evaluation method as that shown in Example 1. As a result, the processing adhesion of the resin-coated metal plate was excellent, but the numerical value representing the sharpness was 0.1, which was poor.
（実施例４） 実施例１と同様の電気亜鉛めっき鋼板に、褐色顔料を
有する共重合ポリエステル系の塗料を５μｍ塗布し乾燥
した。さらにこの上に、実施例１と同様にして実施例１
と同様のポリエステル樹脂からなる厚さ10μｍの透明な
軟質樹脂層を形成させた。次に、片面にトップコートと
してシリコン系の樹脂を２μｍの厚さで予め塗布した厚
さ:25μｍ、表面粗度Ra:0.8μｍの２軸延伸配向した透
明なポリエチレンテレフタレートフィルムの他の片面
に、シランカップリング材を0.3μｍ塗布し乾燥後、透
明な共重合ポリエステル系の接着剤を30μｍ塗布し乾燥
した後、ポリエステル系インキで厚さ１μｍの木目印刷
を施した。このようにして得られた被覆用樹脂フィルム
を、前記の軟質樹脂層を形成させた金属板に実施例１と
同様の条件で積層し、樹脂被覆金属板を作成した。得ら
れた樹脂被覆金属板の特性を、実施例１に示したのと同
一の評価方法で評価した。その結果樹脂被覆金属板の鮮
映性を表す数値は0.8を示し優れており、加工密着性も
優れていた。(Example 4) To the same galvanized steel sheet as in Example 1, 5 μm of a copolyester paint having a brown pigment was applied and dried. Further, on this, as in Example 1,
A 10 μm-thick transparent soft resin layer made of the same polyester resin as described above was formed. Next, a silicon-based resin having a thickness of 2 μm previously coated as a top coat on one side: a thickness of 25 μm, a surface roughness Ra: 0.8 μm, and the other side of a biaxially stretched transparent polyethylene terephthalate film on another side, A silane coupling material was applied at 0.3 μm and dried, and then a transparent copolyester-based adhesive was applied at 30 μm and dried, and then a 1 μm-thick grain print was performed with a polyester-based ink. The coating resin film thus obtained was laminated on the metal plate on which the soft resin layer was formed under the same conditions as in Example 1 to prepare a resin-coated metal plate. The characteristics of the obtained resin-coated metal plate were evaluated by the same evaluation method as shown in Example 1. As a result, the numerical value indicating the sharpness of the resin-coated metal plate was 0.8, which was excellent, and the processing adhesion was also excellent.
（実施例５） 実施例１と同様の電気亜鉛めっき鋼板に、褐色顔料を
有する共重合ポリエステル系の塗料を５μｍ塗布し乾燥
した。さらにこの上に、実施例１と同様にして実施例１
と同様のポリエステル樹脂からなる厚さ10μｍの透明な
軟質樹脂層を形成させた。次に、片面に実施例４と同様
のトップコートを施した実施例４と同様の２軸延伸配向
した透明なポリエチレンテレフタレートフィルムの他の
片面に、ポリエステル系インキで柄印刷を施し、引き続
いてベタ印刷を施した（印刷層の全厚さ:7μｍ）。この
印刷層の上に実施例４と同様のシランカップリング材処
理を施した後、実施例４と同様の透明な共重合ポリエス
テル系の接着剤を30μｍ塗布し乾燥して得られた被覆用
樹脂フィルムを、前記の軟質樹脂層を形成させた金属板
に実施例１と同様の条件で積層し、樹脂被覆金属板を作
成した。このようにして得られた樹脂被覆金属板の特性
を、実施例１に示したのと同一の評価方法で評価した。
その結果、樹脂被覆金属板の鮮映性を表す数値は0.8を
示し優れており、加工密着性も優れていた。(Example 5) To the same galvanized steel sheet as in Example 1, 5 μm of a copolyester-based paint having a brown pigment was applied and dried. Further, on this, as in Example 1,
A 10 μm-thick transparent soft resin layer made of the same polyester resin as described above was formed. Next, the other side of the transparent biaxially oriented transparent polyethylene terephthalate film similar to that of Example 4 in which the same top coat as that of Example 4 was applied was subjected to pattern printing with a polyester-based ink. Printing was performed (total thickness of the printed layer: 7 μm). After the same silane coupling agent treatment as in Example 4 was performed on the printed layer, a 30 μm transparent copolyester-based adhesive similar to that in Example 4 was applied and dried to obtain a coating resin. A film was laminated on the metal plate on which the above-mentioned soft resin layer was formed under the same conditions as in Example 1 to prepare a resin-coated metal plate. The characteristics of the resin-coated metal plate thus obtained were evaluated by the same evaluation method as that shown in Example 1.
As a result, the numerical value representing the sharpness of the resin-coated metal plate was 0.8, which was excellent, and the processing adhesion was also excellent.
産業上の利用可能性 本発明の樹脂被覆金属板は、着色塗料層と接着剤層、
または着色塗料層と印刷層の間に軟質樹脂層を設けたこ
とにより、金属板の粗度による凹凸や着色塗料層の凹
凸、または印刷層の凹凸を吸収することが可能となり、
優れた鮮映性が得られる。Industrial applicability The resin-coated metal plate of the present invention has a colored paint layer and an adhesive layer,
Or by providing a soft resin layer between the colored paint layer and the print layer, it becomes possible to absorb the unevenness due to the roughness of the metal plate and the unevenness of the colored paint layer, or the unevenness of the print layer,
Excellent sharpness can be obtained.
また、軟質樹脂層が着色塗料層、印刷層、および接着
剤層との接着性に優れ、かつ、接着剤層および印刷層が
透明樹脂フィルムとの接着性に優れており、張出し加工
や深絞り加工のような厳しい加工を施しても上記の構成
層の界面での剥離が生じることがなく、優れた加工密着
性を示す。In addition, the soft resin layer has excellent adhesion to the colored paint layer, the printing layer, and the adhesive layer, and the adhesive layer and the printing layer have excellent adhesion to the transparent resin film. Even when severe processing such as processing is performed, peeling does not occur at the interface between the constituent layers described above, and excellent processing adhesion is exhibited.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平５−147184（ＪＰ，Ａ) 特開 平６−254489（ＪＰ，Ａ) 特開 平７−304132（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B32B 15/08 ────────────────────────────────────────────────── (5) References JP-A-5-147184 (JP, A) JP-A-6-254489 (JP, A) JP-A-7-304132 (JP, A) (58) Field (Int.Cl. 7 , DB name) B32B 15/08
Claims (13)
μｍ以下である表面粗度を有する金属板を基板とし、少
なくとも基板の片面に、基板側から順次に、着色塗料
層、軟質樹脂層、接着剤層、透明樹脂フィルムが積層さ
れた樹脂被覆金属板。1. A center line average roughness (Ra) exceeding 10 μm
A resin-coated metal plate having a metal plate having a surface roughness of not more than μm as a substrate, and a coloring paint layer, a soft resin layer, an adhesive layer, and a transparent resin film laminated on at least one side of the substrate sequentially from the substrate side .
特徴とする、請求項１に記載の樹脂被覆金属板。2. The resin-coated metal plate according to claim 1, wherein said soft resin layer is a transparent resin.
脂層であることを特徴とする、請求項１または２に記載
の樹脂被覆金属板。3. The resin-coated metal plate according to claim 1, wherein the soft resin layer is a mixed resin layer in an uncured state.
布した層であることを特徴とする、請求項１〜３のいず
れかに記載の樹脂被覆金属板。4. The resin-coated metal plate according to claim 1, wherein said soft resin layer is a layer coated with a polyester resin.
るフィルムであることを特徴とする、請求項１または２
に記載の樹脂被覆金属板。5. The method according to claim 1, wherein the soft resin layer is a film made of polyolefin.
The resin-coated metal plate according to the above.
とする、請求項１に記載の樹脂被覆金属板。6. The resin-coated metal plate according to claim 1, wherein said adhesive layer contains a pigment.
する、請求項６に記載の樹脂被覆金属板。7. The resin-coated metal plate according to claim 6, wherein the pigment is a metal powder.
を特徴とする、請求項７に記載の樹脂被覆金属板。8. The resin-coated metal plate according to claim 7, wherein said pigment is aluminum powder.
する、請求項７に記載の樹脂被覆金属板。9. The resin-coated metal plate according to claim 7, wherein said pigment is mica powder.
を有していることを特徴とする、請求項１に記載の樹脂
被覆金属板。10. The resin-coated metal plate according to claim 1, wherein the transparent resin film has a mirror surface on both front and back surfaces.
レフタレートを２軸延伸配向したフィルムであることを
特徴とする、請求項１に記載の樹脂被覆金属板。11. The resin-coated metal plate according to claim 1, wherein said transparent resin film is a film in which polyethylene terephthalate is biaxially stretched and oriented.
柄印刷層、または、柄印刷層およびベタ印刷層を設けた
ことを特徴とする、請求項１に記載の樹脂被覆金属板。12. The method according to claim 11, wherein the adhesive layer and the soft resin layer are
The resin-coated metal plate according to claim 1, wherein a pattern printing layer or a pattern printing layer and a solid printing layer are provided.
の間に、柄印刷層、または、柄印刷層およびベタ印刷層
を設けたことを特徴とする、請求項１に記載の樹脂被覆
金属板。13. The resin-coated metal according to claim 1, wherein a pattern printing layer or a pattern printing layer and a solid printing layer are provided between the adhesive layer and the transparent resin film. Board.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8-142378 | 1996-05-14 | ||
| JP14237896 | 1996-05-14 | ||
| PCT/JP1997/001623 WO1997043119A1 (en) | 1996-05-14 | 1997-05-14 | Metallic sheet covered with highly clear resin and having work adhesiveness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP3090956B2 true JP3090956B2 (en) | 2000-09-25 |
Family
ID=15313989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP09540740A Expired - Fee Related JP3090956B2 (en) | 1996-05-14 | 1997-05-14 | High definition resin coated metal plate with excellent processing adhesion |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JP3090956B2 (en) |
| KR (1) | KR100366984B1 (en) |
| CN (1) | CN1103283C (en) |
| AU (1) | AU2788597A (en) |
| ID (1) | ID17403A (en) |
| MY (1) | MY121257A (en) |
| TW (1) | TW434145B (en) |
| WO (1) | WO1997043119A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100725849B1 (en) * | 2003-07-30 | 2007-06-08 | 다이니혼 잉키 가가쿠 고교 가부시키가이샤 | Laminated sheet for molding |
| JP5498035B2 (en) * | 2009-03-05 | 2014-05-21 | 北海製罐株式会社 | Printed polyester film for coating can body material, method for producing the same, and can body using the same |
| KR101058352B1 (en) | 2009-09-08 | 2011-08-22 | 정영철 | Coating composition for ultraviolet mirror coating |
| US8409678B2 (en) | 2010-04-06 | 2013-04-02 | Pao Yi Technology Co., Ltd. | Thin metal casing with plastic part and manufacturing method thereof |
| CN103553437B (en) * | 2013-10-26 | 2015-01-07 | 桂林理工大学 | Preparation method of high-flame-retardant quartz stone plate |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0626872B2 (en) * | 1988-08-22 | 1994-04-13 | 東洋鋼板株式会社 | Method for producing resin-coated metal plate having high image clarity |
| 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 |
| MY136271A (en) * | 1994-12-29 | 2008-09-30 | Toyo Kohan Co Ltd | A resin-coated metal sheet with higher vivid reflectivity having the excellent workable adhesion strength |
-
1997
- 1997-05-13 MY MYPI97002096A patent/MY121257A/en unknown
- 1997-05-13 TW TW086106332A patent/TW434145B/en not_active IP Right Cessation
- 1997-05-14 WO PCT/JP1997/001623 patent/WO1997043119A1/en active IP Right Grant
- 1997-05-14 CN CN97194566A patent/CN1103283C/en not_active Expired - Lifetime
- 1997-05-14 JP JP09540740A patent/JP3090956B2/en not_active Expired - Fee Related
- 1997-05-14 KR KR10-1998-0709034A patent/KR100366984B1/en active IP Right Grant
- 1997-05-14 AU AU27885/97A patent/AU2788597A/en not_active Abandoned
- 1997-05-14 ID IDP971610A patent/ID17403A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| MY121257A (en) | 2006-01-28 |
| WO1997043119A1 (en) | 1997-11-20 |
| TW434145B (en) | 2001-05-16 |
| AU2788597A (en) | 1997-12-05 |
| KR20000010887A (en) | 2000-02-25 |
| ID17403A (en) | 1997-12-24 |
| KR100366984B1 (en) | 2003-09-19 |
| CN1222881A (en) | 1999-07-14 |
| CN1103283C (en) | 2003-03-19 |
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