JP2000025177A - Decorative sheet - Google Patents
Decorative sheetInfo
- Publication number
- JP2000025177A JP2000025177A JP10200469A JP20046998A JP2000025177A JP 2000025177 A JP2000025177 A JP 2000025177A JP 10200469 A JP10200469 A JP 10200469A JP 20046998 A JP20046998 A JP 20046998A JP 2000025177 A JP2000025177 A JP 2000025177A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- decorative sheet
- resin
- resin layer
- polypropylene
- 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.)
- Granted
Links
Landscapes
- Laminated Bodies (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、木質系ボード類、
無機系ボード類、金属板等の表面に接着剤で貼り合わせ
て化粧板として用いる化粧シートに関する。The present invention relates to wood-based boards,
The present invention relates to a decorative sheet to be used as a decorative board by bonding to a surface of an inorganic board, a metal plate or the like with an adhesive.
【０００２】[0002]
【従来の技術】従来、前記の用途に用いられる化粧シー
トとしては、適度な柔軟性、耐磨耗性、耐傷性、耐薬品
性、耐候性等を備え、さらにＶカット加工等の曲げ加工
適性やルータ加工等の切削加工適性等の後加工性に優れ
た塩化ビニル樹脂製シートが最も一般的であった。2. Description of the Related Art Conventionally, decorative sheets used in the above applications have moderate flexibility, abrasion resistance, scratch resistance, chemical resistance, weather resistance, etc., and are suitable for bending processing such as V-cut processing. Sheets made of vinyl chloride resin, which are excellent in post-processing properties such as cutting workability such as cutting and router processing, have been most common.
【０００３】しかし、近年になって塩化ビニル樹脂は、
使用後の廃棄物処理すなわち焼却処理において、酸性雨
の原因や焼却炉の腐食の原因となる塩化水素ガスや猛毒
物質であるダイオキシンの発生の要因となるものであ
り、廃棄物処理に係わる環境保護の観点から問題視され
るようになった。また、化粧シートには表面に凹陥模様
が施される場合が多いが、従来の塩化ビニル樹脂製シー
トは、１００℃程度の雰囲気に長時間放置すると凹陥模
様が消失してしまう欠点があった。係る事情により、塩
化ビニル樹脂に替わる樹脂を使用した化粧シートが要望
されるようになった。However, in recent years, vinyl chloride resins have
In waste treatment after use, that is, incineration, hydrogen chloride gas, which causes acid rain and corrosion of incinerators, and dioxin, which is a highly toxic substance, are generated.Environmental protection related to waste disposal From the point of view. Further, the decorative sheet is often provided with a concave pattern on the surface, but the conventional vinyl chloride resin sheet has a disadvantage that the concave pattern disappears when left in an atmosphere of about 100 ° C. for a long time. Under such circumstances, a decorative sheet using a resin instead of the vinyl chloride resin has been demanded.
【０００４】そこで、塩化ビニル樹脂に替わる樹脂とし
て、ポリエチレン、ポリプロピレン、ポリエチレンテレ
フタレート、エチレン−ビニルアルコール、アクリル等
の樹脂および共重合体を使用した化粧シートが提案され
るようになった。しかし、従来の塩化ビニル樹脂の持つ
適度な柔軟性、耐磨耗性、耐傷性、耐薬品性、耐候性等
を備え、さらにＶカット加工等の曲げ加工適性やルータ
加工等の切削加工適性等をも満足して、なおかつ安価で
提供され、さらに表面に凹陥模様を有する場合には高温
下でも凹陥模様が消失することのない化粧シートは現在
なお得られていない。Accordingly, decorative sheets using resins and copolymers such as polyethylene, polypropylene, polyethylene terephthalate, ethylene-vinyl alcohol, and acryl as resins instead of vinyl chloride resins have been proposed. However, it has the appropriate flexibility, abrasion resistance, scratch resistance, chemical resistance, weather resistance, etc. of the conventional vinyl chloride resin, and is also suitable for bending processing such as V-cut processing and cutting processing such as router processing. A decorative sheet which satisfies the above conditions and is provided at a low cost, and which has a concave pattern on the surface and does not disappear even at a high temperature, has not yet been obtained.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、かかる従来
技術の問題点を解決するものであり、その課題とすると
ころは、塩化ビニル樹脂以外の材料を用いて、適度な柔
軟性、耐磨耗性、耐傷性、耐薬品性、耐候性等の諸物性
やＶカット加工等の曲げ加工適性、ルータ加工等の切削
加工適性等の後加工性において従来の塩化ビニル樹脂製
化粧シートと同等あるいはそれ以上の特性を有し、しか
も安価な化粧シートを提供することにある。さらに、表
面に凹陥模様を有する化粧シートにあっては、１００℃
程度の雰囲気下でも凹陥模様が消失しない化粧シートを
提供することをも併せて目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and it is an object of the present invention to use a material other than a vinyl chloride resin to obtain a suitable flexibility and abrasion resistance. Same as conventional vinyl chloride resin decorative sheets in post-processing properties such as abrasion resistance, scratch resistance, chemical resistance, weather resistance, etc., bending workability such as V cut processing, cutting workability such as router processing, etc. An object of the present invention is to provide an inexpensive decorative sheet having further properties. Furthermore, for a decorative sheet having a concave pattern on its surface,
Another object of the present invention is to provide a decorative sheet in which a concave pattern does not disappear even under a moderate atmosphere.
【０００６】[0006]
【課題を解決するための手段】本発明に於いて上記課題
を達成するために、まず請求項１の発明では、少なくと
も表面樹脂層が、ガラス転移温度−１５℃以下で、かつ
ビカット軟化温度１３０℃以上であるポリプロピレンを
主成分とする樹脂でなることを特徴とする化粧シートと
したものである。In order to achieve the above-mentioned object, the present invention is characterized in that at least the surface resin layer has a glass transition temperature of -15 ° C. or less and a Vicat softening temperature of 130 ° C. The decorative sheet is characterized by being made of a resin whose main component is polypropylene having a temperature of not less than ° C.
【０００７】また、請求項２の発明では、前記ポリプロ
ピレンを主成分とする樹脂でなる表面樹脂層の表面に、
凹陥模様を有する請求項１記載の化粧シートとしたもの
である。Further, in the invention of claim 2, the surface of the surface resin layer made of a resin containing polypropylene as a main component,
The decorative sheet according to claim 1, which has a concave pattern.
【０００８】[0008]
【発明の実施の形態】以下本発明の実施の形態を図面を
用いて説明する。図１は単層型の化粧シートの一例を側
断面で表した説明図である。本発明の化粧シートの一例
として、図１に示すように、少なくとも表面樹脂層（１
０）が、透明樹脂でなり、その樹脂にはガラス転移温度
が−１５℃以下であり、かつビカット軟化温度が１３０
℃以上であるポリプロピレンを主成分とする樹脂を用い
てなることを特徴とする単層型の化粧シート（１）であ
る。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory view showing an example of a single-layer type decorative sheet in a side cross section. As an example of the decorative sheet of the present invention, as shown in FIG.
0) is a transparent resin having a glass transition temperature of −15 ° C. or less and a Vicat softening temperature of 130 ° C.
A single-layer type decorative sheet (1) characterized by using a resin whose main component is polypropylene at a temperature of not less than ° C.
【０００９】その理由は、前述したように、上記化粧シ
ート（１）の表面樹脂層（１０）に要求される物性とし
て適度な柔軟性、耐磨耗性、耐傷性、耐薬品性、耐候性
等の諸物性、Ｖカット加工等の曲げ加工適性、ルータ加
工等の切削加工適性等の後加工適性があり、かつ低コス
トということを考慮するとポリプロピレンが最もバラン
スのとれた樹脂のひとつであると考える。ただしポリプ
ロピレンならば何ら限定がないわけではなく、ガラス転
移温度が−１５℃を越えるものは低温雰囲気下でのＶカ
ット適性に難があり、具体的には−５℃の雰囲気下でＶ
カット加工を行うと割れ、白化が生じる。また、ビカッ
ト軟化点が１３０℃未満のものはルータ切削加工の際に
断面にバリが生じる。さらに１３０℃のグリセリン液に
３０秒間浸漬すると収縮が生じるという新たな問題が発
生するためである。このうち、ルータ切削加工適性が悪
化する原因として、ルータビットと化粧材との摩擦およ
びせん断応力による発熱が影響していると考えられる。The reason is that, as described above, appropriate flexibility, abrasion resistance, scratch resistance, chemical resistance, and weather resistance are required for the surface resin layer (10) of the decorative sheet (1). Polypropylene is one of the most well-balanced resins in terms of post-processing suitability such as various physical properties such as bending workability such as V-cut processing, cutting workability such as router processing, and low cost. Think. However, polypropylene is not limited in any way, and those having a glass transition temperature exceeding −15 ° C. have poor V-cut suitability in a low-temperature atmosphere.
When cutting is performed, cracking and whitening occur. If the Vicat softening point is less than 130 ° C., burrs are generated on the cross section during router cutting. This is because a new problem that shrinkage occurs when immersed in a glycerin solution at 130 ° C. for 30 seconds occurs. Among these factors, it is considered that the cause of the deterioration of the suitability for router cutting is the heat generated by friction and shear stress between the router bit and the decorative material.
【００１０】前記樹脂でなる表面樹脂層（１０）の製造
方法としては、熱プレス法、カレンダー法、Ｔダイ押出
法、インフレーション押出法等の公知の方法でよいが、
一般的にポリプロピレンシートはＴダイ押出法が好適に
用いられる。その意味でＴダイ押出法が好ましいが何ら
限定されるものではない。The method for producing the surface resin layer (10) made of the resin may be a known method such as a hot press method, a calender method, a T-die extrusion method, and an inflation extrusion method.
Generally, a T-die extrusion method is suitably used for a polypropylene sheet. In that sense, the T-die extrusion method is preferred, but is not limited at all.
【００１１】また、図１に示すように、貼り合わせる木
質系ボード、無機系ボード、金属板が表面から見えない
ようにするための隠蔽層（２０）を施したり、木目柄、
石目柄、砂地柄、抽象柄等の模様層（３０）を施すこと
も好適に行われる。Further, as shown in FIG. 1, a concealing layer (20) for preventing the woody board, the inorganic board, and the metal plate to be bonded from being visible from the surface is provided.
It is also preferable to apply a pattern layer (30) of a stone pattern, a sand pattern, an abstract pattern, or the like.
【００１２】これらの隠蔽層（２０）および模様層（３
０）の形成方法としては、前記表面樹脂層（１０）の表
面あるいは裏面あるいはその両方にグラビア印刷、凹版
印刷、フレキソ印刷、シルク印刷、静電印刷、インクジ
ェット印刷等の公知の印刷方法が一般的であるが必ずし
もこれに限定するものではない。また用いられるインキ
も公知のもの、すなわちビヒクルに染料または顔料等の
着色剤、体質顔料を添加し、さらに可塑剤、安定剤、ワ
ックス、グリース、乾燥剤、硬化剤、増粘剤、分散剤、
充填剤等を任意に添加して溶剤、希釈剤等で充分混連し
て成るものでよい。The concealing layer (20) and the pattern layer (3)
As a forming method of 0), a known printing method such as gravure printing, intaglio printing, flexographic printing, silk printing, electrostatic printing, or inkjet printing is generally applied to the front surface and / or the back surface of the surface resin layer (10). However, the present invention is not necessarily limited to this. Also used inks are known ones, that is, a coloring agent such as a dye or a pigment is added to a vehicle, an extender, a plasticizer, a stabilizer, a wax, a grease, a drying agent, a curing agent, a thickener, a dispersant,
A filler or the like may be arbitrarily added, and a solvent, a diluent or the like may be sufficiently mixed to form a mixture.
【００１３】また、任意の基材に前記の方法等で隠蔽層
（２０）あるいは模様層（３０）あるいはその両方を形
成しておき、詳細を後記する熱ラミ法、ドライラミおよ
びウエットラミ法、押出ラミ法等で前記表面樹脂層（１
０）と貼り合わせた後に任意の基材を剥離して隠蔽層
（２０）あるいは模様層（３０）あるいはその両方を転
写する方法を用いることもできる。Further, a concealing layer (20) and / or a pattern layer (30) are formed on an arbitrary substrate by the above-mentioned method or the like, and the details thereof will be described later by a thermal lamination method, a dry lamination method and a wet lamination method, an extrusion lamination method. The surface resin layer (1
A method in which an arbitrary substrate is peeled off after laminating the opaque layer (20) and / or the pattern layer (30) after the lamination with (0) can also be used.
【００１４】また、前記樹脂でなる表面樹脂層（１０）
の製造方法としてＴダイ押出法を用いる場合には、前記
樹脂でなる表面樹脂層（１０）に直接着色して押出し製
膜して隠蔽の効果を持たせることもできる。この着色方
法としては、顔料を分散助剤や界面活性剤で処理した微
粉末状の着色剤を使用するドライカラー法、樹脂と高濃
度の顔料を溶融混連して予備分散せしめたマスターバッ
チペレットを作製して押出ホッパ内で着色のされていな
い通常の樹脂とドライブレンドするというマスターバッ
チ法等があるが、特にこれに限定されるものではない。
顔料の種類も通常用いられているものでよいが、特に耐
熱性、耐候性を考慮して酸化チタン、群青、カドミウム
顔料、酸化鉄等の無機顔料が望ましい。また有機顔料で
もフタロシアニン顔料、キナクリドン顔料等は使用でき
る。顔料の比率、色は隠蔽の度合い、意匠性を鑑みて適
宜決められるものであり特に制約はない。また、模様を
施す方法として、高濃度の顔料を前記樹脂とは流動特性
の異なる樹脂に溶融混連して予備分散せしめたマスター
バッチペレット、木粉、ガラス粉末等を添加して押出し
製膜して前記樹脂でなる表面樹脂層（１０）自体に模様
層（３０）を形成する方法がある。勿論、これらの樹脂
でなる表面樹脂層（１０）自体に着色隠蔽層（２０）、
模様層（３０）を形成する方法と前記印刷方法、転写方
法等を併用することもできる。Also, a surface resin layer (10) made of the above resin
When the T-die extrusion method is used as the production method of the above, the surface resin layer (10) made of the resin can be directly colored and extruded to form a film, thereby giving a hiding effect. Examples of the coloring method include a dry color method using a fine powder colorant obtained by treating a pigment with a dispersing aid or a surfactant, and a master batch pellet in which a resin and a high-concentration pigment are melt-mixed and predispersed. , And dry-blending it with a normal resin that is not colored in an extrusion hopper, but there is no particular limitation to this.
The pigments may be those commonly used, but inorganic pigments such as titanium oxide, ultramarine blue, cadmium pigments, and iron oxides are particularly desirable in consideration of heat resistance and weather resistance. Further, among organic pigments, phthalocyanine pigments, quinacridone pigments and the like can be used. The ratio and color of the pigment are appropriately determined in consideration of the degree of concealment and design, and are not particularly limited. Further, as a method of applying a pattern, a high-concentration pigment is melt-mixed with a resin having a different flow characteristic from the resin, and a master batch pellet preliminarily dispersed and mixed with wood powder, glass powder, and the like are added and extruded to form a film. There is a method of forming a pattern layer (30) on the surface resin layer (10) itself made of the resin. Needless to say, the color concealing layer (20) is provided on the surface resin layer (10) itself made of these resins,
The method of forming the pattern layer (30) can be used in combination with the above-described printing method, transfer method, and the like.
【００１５】また、場合によっては表面の手触り感やよ
り一層の意匠感を得るため、図１に示すように、前記樹
脂でなる表面樹脂層（１０）の表面に凹陥部（４０）で
なる凹陥模様を施し、その凹陥部（４０）に充填インキ
（４２）を埋め込み、最外表面にトップコート保護層
（５０）を設けることも好適に行われる。In some cases, in order to obtain a feel on the surface and a further sense of design, as shown in FIG. 1, a concave portion (40) is formed on the surface of the surface resin layer (10) made of the resin. It is also preferable to provide a pattern, bury the filling ink (42) in the concave portion (40), and provide the top coat protective layer (50) on the outermost surface.
【００１６】上記凹陥部（４０）でなる凹陥模様を施す
方法としては、通常の熱圧エンボス加工法でよく、何ら
限定されるものではない。また、前記樹脂でなる表面樹
脂層（１０）の製造方法としてＴダイ押出法を用いる場
合には、溶融樹脂を冷却固化させるチルロールの表面に
凹陥模様を施しておく方法が一般的である。また、施さ
れた凹陥部（４０）にインキを埋め込み、最外表面にト
ップコート保護層（５０）を設けることも好適に行われ
るが、これらの方法は従来の塩化ビニル樹脂製化粧シー
トで行われているワイピング処理およびトップコート処
理で何ら問題はない。The method of forming the concave pattern formed by the concave portion (40) may be an ordinary hot-press embossing method, and is not limited at all. When a T-die extrusion method is used as a method for manufacturing the surface resin layer (10) made of the resin, a method of forming a concave pattern on the surface of a chill roll for cooling and solidifying a molten resin is generally used. It is also preferable to embed ink into the recessed portion (40) and to provide a top coat protective layer (50) on the outermost surface. However, these methods are performed using a conventional vinyl chloride resin decorative sheet. There is no problem in the wiping process and the top coat process which are performed.
【００１７】また、請求項２の発明は、上記凹陥模様を
有する化粧シート（１）であって、表面樹脂層（１０）
に、ガラス転移温度が−１５℃以下で、かつビカット軟
化温度が１３０℃以上であるポリプロピレンを主成分と
する樹脂を用いることにより、前記の利点に加えて凹陥
部（４０）でなる凹陥模様の消失、変形の無い化粧シー
ト（１）を得ることができる。ビカット軟化温度が１３
０℃未満のものは１３０℃のグリセリン液に３０秒間浸
漬すると凹陥模様の変形が生じる。The invention according to claim 2 is a decorative sheet (1) having the concave pattern, wherein the surface resin layer (10) is provided.
By using a resin having a glass transition temperature of −15 ° C. or lower and a polypropylene-based resin having a Vicat softening temperature of 130 ° C. or higher, in addition to the above-described advantages, a concave pattern formed by the concave portion (40) can be obtained. A decorative sheet (1) free from disappearance and deformation can be obtained. Vicat softening temperature of 13
If the temperature is lower than 0 ° C., the concave pattern is deformed when immersed in a glycerin solution at 130 ° C. for 30 seconds.
【００１８】以上のように、本発明の化粧シートの一例
として、前記樹脂でなる表面樹脂層（１０）の裏面に模
様層（３０）および隠蔽層（２０）を施し、さらに前記
樹脂でなる表面樹脂層（１０）の表面に凹陥模様を施し
てその凹陥部（４０）に充填インキ（４２）を埋め込
み、最外表面にトップコート保護層（５０）を設けた単
層型の化粧シート（１）とするものである。As described above, as an example of the decorative sheet of the present invention, the pattern layer (30) and the concealing layer (20) are applied to the back surface of the surface resin layer (10) made of the resin, and the front surface made of the resin is further formed. A single-layer decorative sheet (1) having a concave pattern on the surface of the resin layer (10), filling the concave portion (40) with the filling ink (42), and providing a top coat protective layer (50) on the outermost surface. ).
【００１９】また、場合によってはある特定の物性を重
視するため、あるいは立体感、重厚感を出してより一層
の高級感を得るため、図２に示すように、上記表面樹脂
層（１０）を、前記ポリプロピレンを主成分とする樹脂
を用いた裏面樹脂層（１２）に積層する２層型の化粧シ
ート（２）とすることもできる。In some cases, in order to emphasize certain physical properties, or to obtain a more luxurious feeling by giving a three-dimensional appearance and a profound feeling, as shown in FIG. Alternatively, the decorative sheet (2) may be a two-layer type laminated on the back surface resin layer (12) using a resin containing polypropylene as a main component.
【００２０】この表面樹脂層（１０）を裏面樹脂層（１
２）に積層する方法としては、熱および圧力をかけて貼
り合わせる熱ラミ法、接着剤を介して貼り合わせるドラ
イラミおよびウエットラミ方法、また裏面樹脂層（１
２）を基材としてその上に、表面樹脂層（１０）のため
の樹脂をＴダイから溶融押出する押出ラミ方法、両方の
樹脂をＴダイから溶融押出する共押出方法等があり、何
らそれに限定されるものではない。This front surface resin layer (10) is
As a method of laminating in 2), a heat lamination method of bonding by applying heat and pressure, a dry lamination method and a wet lamination method of bonding via an adhesive, and a backside resin layer (1)
There is an extrusion laminating method in which a resin for the surface resin layer (10) is melt-extruded from a T-die, a co-extrusion method in which both resins are melt-extruded from a T-die, and the like. It is not limited.
【００２１】前述したように、少なくとも表面樹脂層
（１０）の樹脂として、ガラス転移温度が−１５℃以下
であり、かつビカット軟化温度が１３０℃以上であるポ
リプロピレンを主成分とする樹脂を用いるが、裏面樹脂
層（１２）の樹脂として用いることもできるがこの限り
ではなく、一例を挙げると請求項１に記載されている以
外のポリプロピレン、ポリエチレン、エチレン酢酸ビニ
ル共重合体、エチレンビニルアルコール共重合体、ポリ
スチレン、ＡＢＳ、ポリメタクリル酸メチル、ポリアク
リル酸メチル、ポリアクリル酸ブチル、ポリ酢酸ビニ
ル、ポリビニルアルコール、ポリビニルブチラール、ポ
リビニルアセタール、ポリエチレンテレフタレート、ポ
リブチレンテレフタレート、ポリエチレンナフタレー
ト、ポリカーボネート、ポリウレタン、ポリアミド、ナ
イロン６、ナイロン６６等がある。As described above, at least as a resin of the surface resin layer (10), a resin mainly composed of polypropylene having a glass transition temperature of -15 ° C. or lower and a Vicat softening temperature of 130 ° C. or higher is used. It can also be used as a resin for the backside resin layer (12), but is not limited thereto. For example, polypropylene, polyethylene, ethylene-vinyl acetate copolymer, ethylene-vinyl alcohol copolymer other than those described in claim 1 may be mentioned. Coalescing, polystyrene, ABS, polymethyl methacrylate, polymethyl acrylate, polybutyl acrylate, polyvinyl acetate, polyvinyl alcohol, polyvinyl butyral, polyvinyl acetal, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polycarbonate, Polyurethane, polyamide, nylon 6, there is a nylon 66 or the like.
【００２２】このように２層型の化粧シート（２）にお
いても、必要に応じて隠蔽層（２０）、模様層（３０）
および凹陥部（４０）でなる凹陥模様およびトップコー
ト保護層（５０）を施すことができる。これらの形成方
法は前記の方法で何ら問題はない。なお、凹陥模様を施
す場合は凹陥模様を有する表面樹脂層（１０）にガラス
転移温度が−１５℃以下であり、かつビカット軟化温度
が１３０℃以上であるポリプロピレンを主成分とする樹
脂を用いる。その理由は前記の通り凹陥模様の消失、変
形の無い２層型の化粧シート（２）を得るためである。As described above, also in the two-layer type decorative sheet (2), if necessary, the concealing layer (20) and the pattern layer (30)
And a concave pattern consisting of the concave portion (40) and a top coat protective layer (50) can be applied. These forming methods have no problem with the above-mentioned method. When a concave pattern is formed, a resin having a glass transition temperature of −15 ° C. or lower and a Vicat softening temperature of 130 ° C. or higher as a main component is used for the surface resin layer (10) having the concave pattern. The reason for this is to obtain a two-layer decorative sheet (2) free from the disappearance and deformation of the concave pattern as described above.
【００２３】また、図３に示すように、図２に示す裏面
樹脂層（１２）に代わり、上記各樹脂に無機顔料等を分
散させた隠蔽層（２０）を兼ねた裏面樹脂層（１２）と
し、その表面に模様層（３０）を施し、その模様層（３
０）面に表面樹脂層（１０）を貼り合わせ、さらにこの
表面樹脂層（１０）の表面にに凹陥模様を施してその凹
陥部（４０）に充填インキ（４２）を埋め込み、最外表
面にトップコート保護層（５０）を設けた本発明に係わ
る２層型の化粧シート（２）とすることができる。As shown in FIG. 3, instead of the backside resin layer (12) shown in FIG. 2, the backside resin layer (12) also serving as a concealing layer (20) in which an inorganic pigment or the like is dispersed in each of the above resins. And a pattern layer (30) is applied to the surface thereof.
The surface resin layer (10) is bonded to the surface (0), a concave pattern is formed on the surface of the surface resin layer (10), and the filling ink (42) is embedded in the concave portion (40). The two-layer type decorative sheet (2) according to the present invention provided with the top coat protective layer (50) can be obtained.
【００２４】以上のように、裏面樹脂層（１２）に表面
樹脂層（１０）を積層した２層型の化粧シート（２）に
加え、これらの層をさらに付加し、３層型以上の多層型
の化粧シートとすることもできる。As described above, in addition to the two-layer type decorative sheet (2) in which the front surface resin layer (10) is laminated on the back surface resin layer (12), these layers are further added to form a three-layer or more multi-layered sheet. It can also be a decorative sheet of a mold.
【００２５】[0025]
【実施例】次に本発明を実施例により、本発明を具体的
に説明する。 〈実施例１〉ガラス転移温度が−２０℃、ビカット軟化
温度が１４０℃のポリプロピレンに無機顔料を６重量％
添加して隠蔽性を付与した厚さ７０μｍのシートの表面
にコロナ処理を施した後、グラビア法によりウレタン系
のインキを用いて模様を施し、さらにグラビア法により
ウレタン系のアンカーコート剤を１ｇ／ｍ2 塗布、加熱
乾燥して裏面樹脂層（１２）となるシートを得た。前記
の透明ポリプロピレン（ガラス転移温度：−２０℃、ビ
カット軟化温度：１４０℃）をＴダイより凹陥模様の施
されたチルロールとゴムロールとの間に前記裏面樹脂層
（１２）となるシートを介して厚さ７０μｍで押出し表
面樹脂層（１０）とし、その表面への凹陥模様付与とラ
ミネートを同時に行い、凹陥部（４０）にワイピングイ
ンキを埋め込み充填インキ（４２）とし、、さらに最外
表面にウレタン系のトップコート液を５ｇ／ｍ2 塗布し
てトップコート保護層（５０）とした図３に示すような
２層型の化粧シート（２）を得た。Next, the present invention will be described in detail with reference to examples. <Example 1> 6% by weight of an inorganic pigment was added to polypropylene having a glass transition temperature of -20 ° C and a Vicat softening temperature of 140 ° C.
After a corona treatment is applied to the surface of the 70 μm-thick sheet to which the concealing property is imparted by adding, a pattern is formed by using a urethane-based ink by a gravure method, and a urethane-based anchor coating agent is added by 1 g / m 2 coating to obtain a made sheet backing layer (12) and dried by heating. The transparent polypropylene (glass transition temperature: −20 ° C., Vicat softening temperature: 140 ° C.) is placed between a chill roll and a rubber roll having a concave pattern formed from a T-die via a sheet serving as the back resin layer (12). An extruded surface resin layer (10) having a thickness of 70 μm is formed. Simultaneously, a concave pattern is formed on the surface and lamination is performed. A wiping ink is embedded in the concave portion (40) to form a filling ink (42). 5 g / m 2 of the system topcoat solution was applied to obtain a two-layer decorative sheet (2) as shown in FIG. 3 as a topcoat protective layer (50).
【００２６】〈実施例２〉ポリエチレンテレフタレート
に無機顔料を６重量％添加して隠蔽性を付与した厚さ５
０μｍの裏面樹脂層（１２）となるシートに実施例１と
同様の模様を施し、同様の方法でウレタン系の接着剤を
５ｇ／ｍ2 塗布、加熱乾燥させた後、厚さ７０μｍの実
施例１の透明ポリプロピレン（ガラス転移温度：−２０
℃、ビカット軟化温度：１４０℃）を用いた表面樹脂層
（１０）とドライラミネートした。このラミネートシー
トに熱圧エンボス加工法により表面樹脂層（１０）であ
るポリプロピレンシート側に凹陥模様を施し、実施例１
と同様のワイピング、トップコート処理を施して図３に
示すような２層型の化粧シート（２）を得た。Example 2 Polyethylene terephthalate was added with 6% by weight of an inorganic pigment to provide a hiding thickness of 5
A sheet having a thickness of 70 μm was formed by applying a pattern similar to that of Example 1 to a sheet to be a back resin layer (12) having a thickness of 0 μm, applying 5 g / m 2 of a urethane-based adhesive in the same manner, and drying by heating. 1 transparent polypropylene (glass transition temperature: -20
C., Vicat softening temperature: 140.degree. C.) and dry-laminated with the surface resin layer (10). The laminate sheet was subjected to a depression pattern on the side of the polypropylene sheet as the surface resin layer (10) by a hot-press embossing method.
The same wiping and topcoat treatment as described above were performed to obtain a two-layer decorative sheet (2) as shown in FIG.
【００２７】〈比較例１〉ガラス転移温度が−５℃、ビ
カット軟化温度が１５０℃のポリプロピレンを用いた他
は実施例１と同様の方法で２層型の化粧シートを得た。<Comparative Example 1> A two-layer decorative sheet was obtained in the same manner as in Example 1 except that polypropylene having a glass transition temperature of -5 ° C and a Vicat softening temperature of 150 ° C was used.
【００２８】〈比較例２〉ガラス転移温度が−２５℃、
ビカット軟化温度が１００℃のポリプロピレンを用いた
他は実施例２と同様の方法で２層型の化粧シートを得
た。Comparative Example 2 The glass transition temperature was -25 ° C.
A two-layer decorative sheet was obtained in the same manner as in Example 2 except that polypropylene having a Vicat softening temperature of 100 ° C. was used.
【００２９】〈比較例３〉着色された厚さ７０μｍの塩
化ビニル樹脂シート上にグラビア法により塩酢ビ系のイ
ンキを用いて模様を印刷したシートと厚さ７０μｍの透
明の塩化ビニルシートをダブリングエンボス法によりエ
ンボス付与と同時に熱によりラミネートし、実施例１と
同様にワイピングインキを埋め込み、トップコートを施
した。<Comparative Example 3> A sheet in which a pattern was printed on a colored vinyl chloride resin sheet having a thickness of 70 μm using a vinegar-based vinyl chloride ink by a gravure method and a transparent vinyl chloride sheet having a thickness of 70 μm were doubled. Lamination was performed by heat at the same time as embossing by embossing, wiping ink was embedded in the same manner as in Example 1, and a top coat was applied.
【００３０】このように実施例１、２、比較例１、２、
３で得られた各化粧シートの耐熱性評価として、１３０
℃のグリセリン液に３０秒間浸漬前後の凹陥模様の変形
度を測定した。また、各化粧シートを木質ボードに貼
り、Ｖカット加工を施した後、−５℃の恒温室に１２時
間放置してその雰囲気下で９０度に折り曲げた時の折り
曲げ部の割れ、白化を観察した。また、各化粧シートを
木質ボードに貼り、ルータでくり抜き加工を施した際の
切断面のバリの有無を観察した。さらにまた、各化粧シ
ートを燃焼試験に供試し、塩素ガス発生の有無を測定し
た。これらの評価結果を表１に示した。Thus, Examples 1 and 2, Comparative Examples 1 and 2,
As a heat resistance evaluation of each decorative sheet obtained in No. 3, 130
The degree of deformation of the concave pattern before and after immersion in a glycerin solution at 30 ° C. for 30 seconds was measured. Also, after applying each decorative sheet to a wooden board and performing V-cut processing, the sheet was left in a constant temperature room at −5 ° C. for 12 hours and bent at 90 ° in that atmosphere to observe cracks and whitening of the bent portion. did. In addition, each decorative sheet was stuck on a wooden board, and the cut surface when hollowed out by a router was observed for burrs. Furthermore, each decorative sheet was subjected to a combustion test, and the presence or absence of generation of chlorine gas was measured. Table 1 shows the evaluation results.
【００３１】[0031]
【表１】 [Table 1]
【００３２】表１からも明らかなように、実施例１およ
び２で得られた本発明の一事例である２層型の化粧シー
ト（２）は、脱塩化ビニル化粧シートであることは言う
までもなく、耐熱性、Ｖカット加工性、ルータ切削性も
優れたものであった。As is clear from Table 1, it is needless to say that the two-layer type decorative sheet (2) obtained in Examples 1 and 2, which is an example of the present invention, is a vinyl chloride-free decorative sheet. , Heat resistance, V-cut workability and router machinability were also excellent.
【００３３】これに対して、比較例１で得られたシート
はＶカット加工で折り曲げ部に割れが発生した。また、
比較例２で得られたシートは耐熱試験で凹陥部の変形が
みられ、ルータ切削加工で切断面に著しいバリが生じ
た。また、比較例３は塩化ビニル製のため燃焼試験で塩
素ガスが発生し、耐熱試験でも凹陥部の変形がみられる
ものであった。On the other hand, in the sheet obtained in Comparative Example 1, cracks occurred in the bent portion by the V-cut processing. Also,
In the sheet obtained in Comparative Example 2, deformation of the concave portion was observed in the heat resistance test, and remarkable burrs were generated on the cut surface by router cutting. Further, Comparative Example 3 was made of vinyl chloride, so that chlorine gas was generated in a combustion test, and deformation of the concave portion was observed in a heat resistance test.
【００３４】[0034]
【発明の効果】本発明は以上の構成であるから、下記に
示す如き効果がある。即ち、少なくとも表面樹脂層に、
ガラス転移温度が−１５℃以下であり、かつビカット軟
化温度が１３０℃以上であるポリプロピレンを主成分と
する樹脂を用いた化粧シートとし、塩化ビニル樹脂を一
切使用しない化粧シートとしたので、廃棄物に係わる環
境問題の心配がなく、かつ塩化ビニル製と同等以上の物
性が得られる。特にＶカット適性およびルータ切削性を
有して、かつ低コストな化粧シートを得ることができ
る。As described above, the present invention has the following effects. That is, at least on the surface resin layer,
Since the decorative sheet is made of a resin mainly composed of polypropylene whose glass transition temperature is -15 ° C or less and the Vicat softening temperature is 130 ° C or more, it is a decorative sheet using no vinyl chloride resin. There is no need to worry about environmental problems related to the above, and physical properties equivalent to or higher than those made of vinyl chloride can be obtained. In particular, it is possible to obtain a low-cost decorative sheet having V-cut suitability and router machinability.
【００３５】また、前記表面樹脂層となるポリプロピレ
ンを主成分とする樹脂層に、凹陥模様を施した化粧シー
トとしたものは、高温雰囲気下でもその凹陥模様の変形
および消失の無い化粧シートとすることができる。A decorative sheet in which a concave layer is formed on a resin layer mainly composed of polypropylene, which is to be the surface resin layer, is a decorative sheet in which the concave pattern is not deformed and disappears even in a high-temperature atmosphere. be able to.
【００３６】従って本発明は、木質系ボード類、無機系
ボード類、金属板等の表面に接着剤で貼り合わせて化粧
板とする化粧シートとしての用途において、優れた実用
上の効果を発揮する。Therefore, the present invention exerts an excellent practical effect in use as a decorative sheet which is bonded to the surface of a wood board, an inorganic board, a metal plate or the like with an adhesive to form a decorative board. .
【図１】本発明の一実施の形態を示す単層型の化粧シー
トを側断面で表した説明図である。FIG. 1 is an explanatory diagram showing a side view of a single-layer type decorative sheet according to an embodiment of the present invention.
【図２】本発明の一実施の形態を示す２層型の化粧シー
トを側断面で表した説明図である。FIG. 2 is an explanatory view showing a two-layer type decorative sheet according to an embodiment of the present invention in a side cross section.
【図３】本発明の一実施の形態を示す他の２層型の化粧
シートを側断面で表した説明図である。FIG. 3 is an explanatory view showing another two-layered decorative sheet according to an embodiment of the present invention in a side cross section.
１‥‥単層型の化粧シート ２‥‥２層型の化粧シート １０‥‥表面樹脂層 １２‥‥裏面樹脂層 ２０‥‥隠蔽層 ３０‥‥模様層 ４０‥‥凹陥部 ４２‥‥充填インキ ５０‥‥トップコート保護層 1 {Single-layer type decorative sheet} 2} Two-layer type decorative sheet 10} Surface resin layer 12 {Backside resin layer 20} Concealment layer 30} Pattern layer 40} Depressed part 42} Filling ink 50 ‥‥ Topcoat protective layer
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山添 眞宏 東京都台東区台東１丁目５番１号 凸版印 刷株式会社内 Ｆターム(参考） 4F100 AK07A AR00A BA01 CA13 DD01A HB00A JA04A JA05A JN01 YY00A ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Masahiro Yamazoe 1-5-1, Taito, Taito-ku, Tokyo Toppan Printing Co., Ltd. F-term (reference) 4F100 AK07A AR00A BA01 CA13 DD01A HB00A JA04A JA05A JN01 YY00A
Claims (2)
−１５℃以下で、かつビカット軟化温度１３０℃以上で
あるポリプロピレンを主成分とする樹脂でなることを特
徴とする化粧シート。1. A decorative sheet, characterized in that at least the surface resin layer is made of a resin containing polypropylene as a main component and having a glass transition temperature of −15 ° C. or lower and a Vicat softening temperature of 130 ° C. or higher.
なる表面樹脂層の表面に、凹陥模様を有する請求項１記
載の化粧シート。2. The decorative sheet according to claim 1, wherein the surface of the surface resin layer made of a resin containing polypropylene as a main component has a concave pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20046998A JP4576640B2 (en) | 1998-07-15 | 1998-07-15 | Decorative sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20046998A JP4576640B2 (en) | 1998-07-15 | 1998-07-15 | Decorative sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000025177A true JP2000025177A (en) | 2000-01-25 |
| JP4576640B2 JP4576640B2 (en) | 2010-11-10 |
Family
ID=16424846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20046998A Expired - Fee Related JP4576640B2 (en) | 1998-07-15 | 1998-07-15 | Decorative sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4576640B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1273437A1 (en) * | 2000-09-28 | 2003-01-08 | Gunze Co., Ltd. | Laminating film and laminate |
| JP2003182202A (en) * | 2001-12-18 | 2003-07-03 | Dainippon Printing Co Ltd | Latent image displaying medium |
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| EP1273437A1 (en) * | 2000-09-28 | 2003-01-08 | Gunze Co., Ltd. | Laminating film and laminate |
| EP1273437A4 (en) * | 2000-09-28 | 2003-09-10 | Gunze Co Ltd | Laminating film and laminate |
| US6713166B2 (en) | 2000-09-28 | 2004-03-30 | Gunze Co., Ltd. | Laminating film and laminate |
| JP2003182202A (en) * | 2001-12-18 | 2003-07-03 | Dainippon Printing Co Ltd | Latent image displaying medium |
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| Publication number | Publication date |
|---|---|
| JP4576640B2 (en) | 2010-11-10 |
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