JP7092475B2 - Veneer - Google Patents
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- JP7092475B2 JP7092475B2 JP2017171170A JP2017171170A JP7092475B2 JP 7092475 B2 JP7092475 B2 JP 7092475B2 JP 2017171170 A JP2017171170 A JP 2017171170A JP 2017171170 A JP2017171170 A JP 2017171170A JP 7092475 B2 JP7092475 B2 JP 7092475B2
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Description
本発明は、抗ウイルス剤を含有する化粧板に関し、より詳細には、無機系基材上に化粧層を有し、当該化粧層上に抗ウイルス剤を含有するクリア層が設けられた化粧板に関する。 The present invention relates to a decorative board containing an antiviral agent. More specifically, the present invention is a decorative board having a decorative layer on an inorganic base material and a clear layer containing the antiviral agent on the decorative layer. Regarding.
近年、高齢者施設や病院内での施設内感染予防の観点から、化粧板への抗ウイルス性付与が検討されている。このような抗ウイルス性を有する化粧板としては、例えば、メラミン系樹脂を表層に有する基板に金属粒子含有層を転写したメラミン系化粧板などが開示されている（特許文献１参照）。 In recent years, from the viewpoint of preventing in-facility infections in facilities for the elderly and hospitals, the addition of antiviral properties to decorative boards has been studied. As a decorative board having such antiviral properties, for example, a melamine-based decorative board in which a metal particle-containing layer is transferred to a substrate having a melamine-based resin as a surface layer is disclosed (see Patent Document 1).
しかし、メラミン系の化粧板は、一枚ごとのプレス加工が必要であり、生産効率が悪く、コストが高い問題があった。また、安価な化粧板構成として無機系基材に着色塗膜からなる化粧層を設けた化粧板構成があげられるが、当該化粧層中に抗ウイルス剤を含有する化粧板構成では、光照射時に変色を生じる場合があった。 However, the melamine-based decorative board requires press processing for each sheet, which has a problem of poor production efficiency and high cost. Further, as an inexpensive decorative board configuration, there is a decorative board configuration in which a decorative layer made of a colored coating film is provided on an inorganic base material, but in a decorative board configuration containing an antiviral agent in the decorative layer, when irradiated with light. Discoloration may occur.
本発明が解決しようとする課題は、抗ウイルス性を発現可能な抗ウイルス剤を含有しながらも、低コストで好適な外観を有する化粧板を提供することにあり、特に耐光試験での変色が生じにくく、光照射に対しても良好な外観を保持できる化粧板を提供することにある。 An object to be solved by the present invention is to provide a decorative board having a suitable appearance at a low cost while containing an antiviral agent capable of exhibiting antiviral properties, and discoloration in a light resistance test in particular is caused. It is an object of the present invention to provide a decorative plate which is less likely to occur and can maintain a good appearance even when irradiated with light.
さらに、本発明が解決しようとする課題は、上記課題と共に、耐擦傷性にも優れた化粧板を提供することにある。 Further, a problem to be solved by the present invention is to provide a decorative board having excellent scratch resistance as well as the above problem.
本発明は、無機系基材上に着色剤を含有する化粧層とクリア層とを有する化粧板であって、前記クリア層が化粧板の表層であり、前記クリア層が抗ウイルス剤を含有し、前記クリア層中の抗ウイルス剤の含有量が１０質量％以下であり、前記クリア層の乾燥塗布量が０．２～２５ｇ／ｍ２である化粧板により、上記課題を解決するものである。 The present invention is a decorative board having a decorative layer containing a colorant and a clear layer on an inorganic base material, the clear layer being the surface layer of the decorative board, and the clear layer containing an antiviral agent. The above problem is solved by a decorative plate in which the content of the antiviral agent in the clear layer is 10% by mass or less and the dry coating amount of the clear layer is 0.2 to 25 g / m 2 . ..
本発明の化粧板は、安価な無機系基材上に、着色剤を含有する化粧層を有し、該化粧層側の表層にクリア層を有する構成であるため、メラミン化粧板に比してコストが低い。そして、当該クリア層が抗ウイルス剤をクリア層中の１０質量％以下の含有量で含有し、当該クリア層の乾燥塗膜での塗布量を０．２～２５ｇ／ｍ２とすることで、化粧層の意匠性を大きく阻害することなく良好な意匠性を実現できると共に、光照射による変色が生じにくく良好な外観を保持できる。 The decorative board of the present invention has a decorative layer containing a colorant on an inexpensive inorganic base material and has a clear layer on the surface layer on the decorative layer side, and therefore has a structure as compared with a melamine decorative board. The cost is low. Then, the clear layer contains the antiviral agent in a content of 10% by mass or less in the clear layer, and the coating amount of the clear layer in the dry coating film is 0.2 to 25 g / m 2 . It is possible to realize a good design without significantly impairing the design of the decorative layer, and it is possible to maintain a good appearance with less discoloration due to light irradiation.
本発明の化粧板は、無機系基材上に着色剤を含有する化粧層とクリア層とを有し、前記クリア層が化粧板の表層を構成する。そして、前記クリア層が抗ウイルス剤を、クリア層中１０質量％以下で含有し、クリア層の乾燥塗布量が０．２～２５ｇ／ｍ２である。 The decorative board of the present invention has a decorative layer containing a colorant and a clear layer on an inorganic base material, and the clear layer constitutes the surface layer of the decorative board. The clear layer contains an antiviral agent in an amount of 10% by mass or less in the clear layer, and the dry coating amount of the clear layer is 0.2 to 25 g / m 2 .
［無機系基材］
本発明に使用する無機系基材は、化粧板に使用される各種無機系基材を使用できる。当該無機系基材としては、窯業系無機質基材のほか、骨材としての無機物や無機系繊維を有機系結合材により固めたものも使用することもできるが、無機物の総量が無機系基材の５０質量％以上であることが好ましい。当該無機物としては、水酸化アルミニウム、水酸化マグネシウム、珪酸カルシウム等の結晶水を有する無機物を使用することが好ましい。不燃性向上のためには不燃性基材を使用することが好ましく、なかでも、耐熱性や不燃性を確保しやすく、また低コストで入手しやすいことから、窯業系無機質基材が好ましく、繊維強化珪酸カルシウム成形体、繊維強化セメント成形体、繊維強化セラミックス成形体、軽量気泡コンクリート（ＡＬＣ）、ガラス、タイル、石材又はこれらの複合材等が挙げられる。これらのうち、特に珪酸カルシウム成形体、繊維強化珪酸カルシウム成形体や繊維強化セメント成形体が好ましい。
[Inorganic base material]
As the inorganic base material used in the present invention, various inorganic base materials used for decorative boards can be used. As the inorganic base material, in addition to the ceramic-based inorganic base material, an inorganic substance as an aggregate or a material obtained by solidifying an inorganic fiber with an organic-based binder can be used, but the total amount of the inorganic substance is the inorganic-based base material. It is preferably 50% by mass or more of. As the inorganic substance, it is preferable to use an inorganic substance having water of crystallization such as aluminum hydroxide, magnesium hydroxide and calcium silicate. In order to improve nonflammability, it is preferable to use a nonflammable base material. Among them, a ceramic inorganic base material is preferable because it is easy to secure heat resistance and nonflammability and it is easily available at low cost. Examples thereof include reinforced calcium silicate molded bodies, fiber reinforced cement molded bodies, fiber reinforced ceramic molded bodies, lightweight bubble concrete (ALC), glass, tiles, stone materials, and composite materials thereof. Of these, a calcium silicate molded body, a fiber-reinforced calcium silicate molded body, and a fiber-reinforced cement molded body are particularly preferable.
［化粧層］
本発明に使用する化粧層は、着色剤を含有する層であり、化粧層塗料の塗布、または転写用基材上に形成された化粧層の転写によって形成され、基材の色調を隠蔽して、化粧板に対して任意の意匠性の高い色調の付与を行う層である。本発明においては、低い光沢で意匠性を確保しやすいことから、化粧層の光沢は基板上に積層された状態で光沢度３０以下であることが好ましい。当該光沢度は、基板と化粧層間にベースコート層等の任意の層を有する場合には、当該層上に積層された状態の光沢度である。化粧層の光沢は、化粧層下層の表面形状、積層される化粧層の膜厚、化粧層中の樹脂量もしくは添加剤含有量等で調整することができる。光沢度は２５以下であることが良好なつや消し状の質感が得られる点で好ましく、２０以下であることがさらに好ましい。このような調整手法による化粧層表面の光沢の抑制、艶消し効果の向上は、いずれも樹脂の使用量を低下させる方向であり、不燃性能の向上のために好ましい。特に無機微粒子を艶消し剤として添加することにより化粧層の光沢を調整するときは、化粧層中の樹脂成分をより一層削減することができる。
[Cosmetic layer]
The decorative layer used in the present invention is a layer containing a colorant and is formed by applying a decorative layer paint or transferring a decorative layer formed on a transfer substrate to conceal the color tone of the substrate. , A layer that imparts an arbitrary high-design color tone to the decorative board. In the present invention, the gloss of the decorative layer is preferably 30 or less in a state of being laminated on the substrate, because it is easy to secure the design with low gloss. When the substrate and the decorative layer have an arbitrary layer such as a base coat layer, the glossiness is the glossiness in a state of being laminated on the layer. The gloss of the decorative layer can be adjusted by the surface shape of the lower layer of the decorative layer, the film thickness of the laminated decorative layer, the amount of resin in the decorative layer, the content of additives, and the like. The glossiness is preferably 25 or less in that a good matte texture can be obtained, and more preferably 20 or less. Suppressing the gloss of the surface of the decorative layer and improving the matting effect by such an adjustment method are both in the direction of reducing the amount of the resin used, and are preferable for improving the nonflammable performance. In particular, when the gloss of the decorative layer is adjusted by adding inorganic fine particles as a matting agent, the resin component in the decorative layer can be further reduced.
化粧層を形成するための化粧層用塗料は樹脂、着色剤を含有し、さらに必要に応じて前記艶消し剤、及びその他付加機能を付与するための添加剤を含有することができる。化粧層は、化粧層用塗料をロールコーター法、スプレー法、フローコーター法等の塗布手段による直接塗布、あるいは転写用基体上に塗布して転写することにより形成できる。良好な不燃性能の実現のためには化粧層の塗布量は乾燥塗膜で７０ｇ／ｍ２以下が好ましく、２０～７０ｇ／ｍ２がより好ましく、３０～６０ｇ／ｍ２がさらに好ましい。 The paint for a decorative layer for forming a decorative layer may contain a resin and a colorant, and may further contain the matting agent and other additives for imparting additional functions, if necessary. The decorative layer can be formed by directly applying the decorative layer paint by a coating means such as a roll coater method, a spray method, or a flow coater method, or by applying and transferring the paint on a transfer substrate. In order to realize good non-combustible performance, the coating amount of the decorative layer is preferably 70 g / m 2 or less, more preferably 20 to 70 g / m 2 , and even more preferably 30 to 60 g / m 2 for the dry coating film.
化粧層に使用する樹脂としては、例えば塩化ビニル酢酸－ビニル共重合体樹脂、アクリル樹脂、ウレタン樹脂、アクリルウレタン樹脂、硝化綿、ポリビニルアルコール、ポリビニルアセタール、セルロース誘導体、ポリカーボネート樹脂、ポリアミド樹脂、ポリエステル樹脂、ブチラール樹脂、等の樹脂の一種または二種以上の混合物が用いられる。尚、これらは硬化剤を用いていわゆる２液型とすることもできる。そのなかでも特にベースコート層表面に直接塗布されて形成される化粧層形成用の塗料として使用される樹脂としては、二液ウレタン系樹脂が好ましく、例えばポリエステル、アクリル、アクリルアルキッド等のポリオールとイソシアネートを二液混合したもの等が例示できる。 Examples of the resin used for the decorative layer include vinyl chloride acetate-vinyl copolymer resin, acrylic resin, urethane resin, acrylic urethane resin, nitrified cotton, polyvinyl alcohol, polyvinyl acetal, cellulose derivative, polycarbonate resin, polyamide resin, and polyester resin. , Butyral resin, etc., or a mixture of two or more kinds of resins is used. It should be noted that these can also be made into a so-called two-component type by using a curing agent. Among them, as the resin used as a paint for forming a decorative layer formed by being applied directly to the surface of the base coat layer, a two-component urethane resin is preferable, and for example, polyols such as polyester, acrylic and acrylic alkyd and isocyanates are used. An example is a mixture of two liquids.
化粧層に使用する着色剤としては有機顔料及び無機顔料から選ばれた着色剤及び体質顔料を含むものである。着色剤を構成する無機顔料としては、たとえば、チタン白、カーボンブラック、黄鉛、カドミウムイエロー、カドミウムレッド、弁柄、群青、及びアルミホワイト等を使用することができる。有機顔料としては、キナクリドン、レーキレッド、ベンジシンイエロー、イソインドリノン、フタロシアニンブルー、シンクレアレッド等を使用することができ、所望の色調に応じて上記以外にも任意の有機及び無機顔料が適宜使用できる。また、浸透促進剤として用いる体質顔料としては、無機質のものが好ましく、炭酸カルシウム、クレー、タルク、硫酸バリウム、硫酸カルシウム、水酸化アルミニウム、水酸化マグネシウム、シリカ、アルミナ等の粒子等を用いることができる。 The colorant used for the decorative layer includes a colorant selected from organic pigments and inorganic pigments and an extender pigment. As the inorganic pigment constituting the colorant, for example, titanium white, carbon black, chrome yellow, cadmium yellow, cadmium red, valve handle, ultramarine, aluminum white and the like can be used. As the organic pigment, quinacridone, lake red, benzicin yellow, isoindolenone, phthalocyanine blue, sinkrea red and the like can be used, and any organic and inorganic pigments other than the above can be appropriately used depending on the desired color tone. can. The extender pigment used as a penetration accelerator is preferably an inorganic one, and particles such as calcium carbonate, clay, talc, barium sulfate, calcium sulfate, aluminum hydroxide, magnesium hydroxide, silica, and alumina may be used. can.
これら顔料は、膜厚が薄く樹脂使用量の少ない化粧層であっても良好に下地の色相を隠蔽するものが好ましく、特に酸化チタンは隠蔽力が高く、またつや消し剤としても化粧層中に配合されることが多い。酸化チタンを配合すると化粧層の色調が全体として白っぽい方向に移行する。このため後述するようにクリア層のヘイズや光沢の影響を受けにくくなるが、色相がパステル調のものとなる傾向がある。さらに酸化チタンの配合によって、化粧層中の樹脂の含有量をより低減させることができる。 These pigments are preferably those that conceal the hue of the base well even in a decorative layer having a thin film thickness and a small amount of resin used, and titanium oxide in particular has a high hiding power and is also blended in the decorative layer as a matte agent. Often done. When titanium oxide is added, the color tone of the decorative layer shifts to a whitish direction as a whole. Therefore, as will be described later, the clear layer is less affected by the haze and gloss, but the hue tends to be pastel. Further, by blending titanium oxide, the content of the resin in the decorative layer can be further reduced.
化粧層中に酸化チタンを使用する際には、その含有量を化粧層中の５～５５質量％とすることが好ましく、１５～４５質量％とすることがより好ましい。当該範囲とすることで好適な隠蔽性と共に、クリア層を設けた際の好適な耐擦傷性を実現しやすくなる。 When titanium oxide is used in the decorative layer, the content thereof is preferably 5 to 55% by mass, more preferably 15 to 45% by mass in the decorative layer. Within this range, it becomes easy to realize suitable concealment and scratch resistance when the clear layer is provided.
艶消し剤としては、ケイ素酸化物、アルミニウム酸化物、チタン酸化物等の微粒子酸化物を挙げることができ、分散性を高める目的で、それらの表面にシリカ処理、アルミナ処理、カップリング処理等を施したものを使用することができる。 Examples of the matting agent include fine particle oxides such as silicon oxide, aluminum oxide, and titanium oxide, and the surfaces thereof are subjected to silica treatment, alumina treatment, coupling treatment, etc. for the purpose of improving dispersibility. You can use what you have given.
また、化粧層には、化粧層表面にエンボスを施し表面の質感を向上させる目的で、アクリルビーズやポリプロピレンビーズ等の有機系ビーズ、セラミックビーズやガラスビーズ等の無機系ビーズを含有させることも好ましい。 Further, it is also preferable that the decorative layer contains organic beads such as acrylic beads and polypropylene beads, and inorganic beads such as ceramic beads and glass beads for the purpose of embossing the surface of the decorative layer to improve the texture of the surface. ..
なお、化粧層中には後述の抗ウイルス剤を実質的に含有しないことが好ましい。化粧層中に抗ウイルス剤を含有する場合でも化粧層中の１質量％以下とすることが好ましく、０．５質量％以下とすることがより好ましい。 It is preferable that the decorative layer does not substantially contain the antiviral agent described below. Even when the antiviral agent is contained in the decorative layer, it is preferably 1% by mass or less, and more preferably 0.5% by mass or less in the decorative layer.
［クリア層］
本発明に使用するクリア層は、化粧層上に積層されていて化粧板の最表面層を形成し、化粧層の意匠を視認可能な透明性を有する層である。当該クリア層は抗ウイルス剤を含有し、クリア層に含まれる抗ウイルス剤の含有量が１０質量％以下、好ましくは８質量％以下、より好ましくは６質量％以下、特に好ましくは５質量％以下である。抗ウイルス剤の含有量の下限は抗ウイルス効果が発現できる範囲であれば特に制限されないが好ましくは０．１質量％以上、より好ましくは０．３質量％以上、さらに好ましくは０．５質量％以上、特に好ましくは１質量％以上である。抗ウイルス剤の含有量を当該範囲とすることで、化粧層の意匠性を好適に視認でき、また、光照射時に変色を生じにくく、好適な外観を確保できる。
[Clear layer]
The clear layer used in the present invention is a layer that is laminated on the decorative layer to form the outermost surface layer of the decorative board and has transparency so that the design of the decorative layer can be visually recognized. The clear layer contains an antiviral agent, and the content of the antiviral agent contained in the clear layer is 10% by mass or less, preferably 8% by mass or less, more preferably 6% by mass or less, and particularly preferably 5% by mass or less. Is. The lower limit of the content of the antiviral agent is not particularly limited as long as the antiviral effect can be exhibited, but is preferably 0.1% by mass or more, more preferably 0.3% by mass or more, still more preferably 0.5% by mass. As mentioned above, it is particularly preferably 1% by mass or more. By setting the content of the antiviral agent in the above range, the design of the decorative layer can be suitably visually recognized, discoloration is unlikely to occur during light irradiation, and a suitable appearance can be ensured.
本発明に使用するクリア層は、乾燥塗膜の塗布量が０．２～２５ｇ／ｍ２であり、好ましくは０．５～２０ｇ／ｍ２、より好ましくは１～１５ｇ／ｍ２である。クリア層の乾燥塗布量を当該範囲とすることで、化粧層の意匠性を好適に視認でき、また、光照射に対しても好適な外観を維持できる。 In the clear layer used in the present invention, the coating amount of the dry coating film is 0.2 to 25 g / m 2 , preferably 0.5 to 20 g / m 2 , and more preferably 1 to 15 g / m 2 . By setting the dry coating amount of the clear layer within the above range, the design of the decorative layer can be suitably visually recognized, and the appearance suitable for light irradiation can be maintained.
クリア層に含有する抗ウイルス剤としては、無機系の抗ウイルス剤を使用しても、有機系の抗ウイルス剤を使用してもよいが、取り扱いが容易で不燃性を確保しやすいことから、無機系の抗ウイルス剤を使用することが好ましい。無機系抗ウイルス剤としては、金属イオン担持体や金属酸化物等を好ましく使用できる。金属イオン担持体の金属イオンとしては、銀イオン、銅イオン、亜鉛イオン等を使用できる。これら金属イオンを担持させる担持体としては、ゼオライト、シリカゲル、粘土鉱物、リン酸ジルコニウム、リン酸カルシウム、ガラス、金属等のイオン交換体を例示できる。また、金属酸化物としては、酸化チタン、酸化スズ、酸化タングステン、酸化鉄、酸化亜鉛、酸化クロム、酸化ジルコニウム等を例示できる。 As the antiviral agent contained in the clear layer, an inorganic antiviral agent or an organic antiviral agent may be used, but since it is easy to handle and secure nonflammability, it is easy to secure nonflammability. It is preferable to use an inorganic antiviral agent. As the inorganic antiviral agent, a metal ion carrier, a metal oxide, or the like can be preferably used. As the metal ion of the metal ion carrier, silver ion, copper ion, zinc ion and the like can be used. Examples of the carrier that supports these metal ions include ion exchangers such as zeolite, silica gel, clay mineral, zirconium phosphate, calcium phosphate, glass, and metal. Examples of the metal oxide include titanium oxide, tin oxide, tungsten oxide, iron oxide, zinc oxide, chromium oxide, zirconium oxide and the like.
化粧層上に形成される本願発明のクリア層は、化粧層上に積層されていて化粧板の最表面層を形成し、基本的に透明で、クリア層形成後であっても化粧板に光沢の低い、好ましくは艶消し状の外観を保持させるものである。化粧層上へ積層されるクリア層については該クリア層の形成前後において、化粧板表面の外観変化が小さいものであるほど好ましい。クリア層形成前後で化粧板表面の外観をできるだけ変化しないように保つために、クリア層は透明もしくは半透明であり、そのヘイズ値は６０％以下であることが好ましく、５０％以下であることがより好ましい。ヘイズ値が６０％を超えるとクリア層を透過するときのクリア層中の光散乱がより強くなるため、色相が白味を有する方向に変化しやすく、特に化粧層が濃色系である場合は外観が白っぽくなる傾向がある。またクリア層からの正反射の割合が減少するため化粧板表面の光沢度が、クリア層形成前より低下しやすい。 The clear layer of the present invention formed on the decorative layer is laminated on the decorative layer to form the outermost surface layer of the decorative board, is basically transparent, and is glossy on the decorative board even after the clear layer is formed. It retains a low, preferably matte appearance. As for the clear layer laminated on the decorative layer, it is preferable that the change in appearance of the surface of the decorative board is small before and after the formation of the clear layer. In order to keep the appearance of the decorative board surface unchanged before and after the formation of the clear layer, the clear layer is transparent or translucent, and its haze value is preferably 60% or less, preferably 50% or less. More preferred. When the haze value exceeds 60%, light scattering in the clear layer becomes stronger when passing through the clear layer, so that the hue tends to change in the direction of having a whitish color, especially when the decorative layer is a dark color system. The appearance tends to be whitish. Further, since the ratio of specular reflection from the clear layer is reduced, the glossiness of the surface of the decorative board is likely to be lower than that before the formation of the clear layer.
また、クリア層を光沢度６の白色基板上に形成したときの光沢度が３～３０であることが好ましく、３～２５であることがより好ましい。クリア層の光沢度を当該範囲とすることで、全ての色相の化粧層において、クリア層形成後の化粧板を、クリア層形成前の化粧層を最表面とした化粧板に対して、その外観における差違を小さくできる。 Further, when the clear layer is formed on a white substrate having a glossiness of 6, the glossiness is preferably 3 to 30, and more preferably 3 to 25. By setting the glossiness of the clear layer within the relevant range, the appearance of the decorative board after the formation of the clear layer and the decorative board having the decorative layer before the formation of the clear layer as the outermost surface in the decorative layers of all hues. The difference in can be reduced.
本願発明のクリア層は樹脂を含有する。クリア層の構成成分として使用可能な樹脂としては透明で化粧層との接着性が良好な各種樹脂をあげることができ、例えばアクリル樹脂、ウレタン樹脂、アクリルウレタン樹脂、ポリエステル樹脂、エポキシ樹脂など用いられ、これらは硬化剤を用いていわゆる２液型とすることもできる。また、紫外線硬化性樹脂等を使用することもできる。特に好ましい樹脂としては、透明性、表面硬度、化粧層への接着性等の点において、アクリル、ポリエステル、アクリルアルキッド等のポリオールとイソシアネートを２液混合したもの等が挙げられる。 The clear layer of the present invention contains a resin. Examples of the resin that can be used as a constituent component of the clear layer include various resins that are transparent and have good adhesion to the decorative layer. For example, acrylic resin, urethane resin, acrylic urethane resin, polyester resin, epoxy resin, etc. are used. , These can also be made into a so-called two-component type by using a curing agent. Further, an ultraviolet curable resin or the like can also be used. Particularly preferable resins include those obtained by mixing a polyol such as acrylic, polyester or acrylic alkyd and isocyanate in two liquids in terms of transparency, surface hardness, adhesiveness to a decorative layer and the like.
本願発明で使用するクリア層のヘイズ値や光沢度は、クリア層の表面に光散乱のための凹凸を形成し、その凹凸形状や凹凸頻度を調整することで行うことができる。凹凸形状の調整には平滑なクリア層表面を形成後に、該表面に対して粗面を押しつけて腑形処理をして形成することもできる。しかし、クリア層中に光散乱性物質である微粒子を添加し、上記凹凸の形状や頻度を、添加する微粒子の大きさ、形状、配合量等を調整することで行う方が光散乱の程度を調整し易く、さらにクリア層表面の凹凸からの散乱ばかりでなく、クリア層中の微粒子表面からの光散乱も寄与するため、少ない添加量でより効率的な散乱効果が得られる傾向にあり好ましい。 The haze value and glossiness of the clear layer used in the present invention can be determined by forming irregularities for light scattering on the surface of the clear layer and adjusting the irregular shape and the frequency of the irregularities. To adjust the uneven shape, after forming a smooth clear layer surface, a rough surface may be pressed against the surface to form a rough surface. However, it is better to add fine particles, which are light-scattering substances, to the clear layer and adjust the shape and frequency of the unevenness by adjusting the size, shape, blending amount, etc. of the fine particles to be added. It is easy to adjust, and moreover, not only scattering from the unevenness of the surface of the clear layer but also light scattering from the surface of fine particles in the clear layer contributes, so that a more efficient scattering effect tends to be obtained with a small amount of addition, which is preferable.
クリア層に添加する微粒子としては樹脂粒子等の有機微粒子を使用することもできるが、クリア層中の樹脂との屈折率差が大きく、クリア層の膜厚が薄く、またクリア層中の含有量が少なかったとしても、これら少量の含有量で効果的な散乱を発生させることが可能な無機微粒子を使用でき、本発明においては、当該無機微粒子として、特に透明性が高く分散の容易なシリカ粒子を使用する。なかでも、少量の添加で表面凹凸を容易に形成することのできる不定形シリカ粒子がさらに好ましい。 Organic fine particles such as resin particles can be used as the fine particles to be added to the clear layer, but the difference in refractive index from the resin in the clear layer is large, the thickness of the clear layer is thin, and the content in the clear layer. Inorganic fine particles capable of generating effective scattering with a small amount of these fine particles can be used even if the amount is small, and in the present invention, the inorganic fine particles are particularly transparent and easy to disperse. To use. Of these, amorphous silica particles that can easily form surface irregularities with a small amount of addition are more preferable.
シリカ粒子の粒径はコールターカウンター法（ＡＰ５０μｍ）により測定される平均粒子径で１～１２μｍであることが好ましく、３～８μｍがより好ましい。さらにクリア層中のシリカ粒子含有量は８質量％以下であり、５質量％以下がより好ましい。本発明においては、当該シリカ粒子を当該含有量で使用することで、クリア層の有無による化粧板の外観の変化を抑制できる。 The particle size of the silica particles is preferably 1 to 12 μm in terms of the average particle size measured by the Coulter counter method (AP 50 μm), and more preferably 3 to 8 μm. Further, the silica particle content in the clear layer is 8% by mass or less, more preferably 5% by mass or less. In the present invention, by using the silica particles at the content, it is possible to suppress the change in the appearance of the decorative board depending on the presence or absence of the clear layer.
また、化粧板として不燃性能を向上させたい場合には、クリア層中の有機成分量を４０ｇ／ｍ２以下とすることが好ましく、２５ｇ／ｍ２以下とすることがより好ましく、１５ｇ／ｍ２以下とすることがさらに好ましい。 Further, when it is desired to improve the nonflammable performance as a decorative board, the amount of organic components in the clear layer is preferably 40 g / m 2 or less, more preferably 25 g / m 2 or less, and 15 g / m 2 or less. The following is more preferable.
本発明の化粧板は、クリア層を施す前後での色差がΔ＝３以下であることが好ましく、２以下とすることがより好ましい。色調により差異はあるものの色差を当該範囲とすることで、クリア層を有する化粧板とクリア層の無い化粧板を並べても、両者共に低い艶を保持しつつ、両化粧板間での色調的な違和感が生じにくくなる。 In the decorative board of the present invention, the color difference before and after applying the clear layer is preferably Δ = 3 or less, and more preferably 2 or less. Although there are differences depending on the color tone, by setting the color difference within the range, even if a decorative board with a clear layer and a decorative board without a clear layer are arranged side by side, both of them maintain low luster and the color tone between the two decorative boards is maintained. It is less likely to cause discomfort.
クリア層の塗布は樹脂、必要に応じて他の微粒子を含有するクリア層用塗料を、化粧層用塗料の塗布と同様にして、公知の塗布方法を用いて塗布することで形成できる。 The coating of the clear layer can be formed by applying a paint for a clear layer containing a resin and, if necessary, other fine particles, in the same manner as the coating for a decorative layer, using a known coating method.
クリア層には上記の他、その配合と添加剤の種類を調整することにより種々の特性を付与することが可能であり、例えば抗菌性、耐擦傷性・耐汚染性などの各種機能を適宜付加することができる。 In addition to the above, various properties can be imparted to the clear layer by adjusting its composition and the type of additive. For example, various functions such as antibacterial property, scratch resistance and stain resistance are appropriately added to the clear layer. can do.
［ベースコート層］
本発明の化粧板においては、無機系基材からのアルカリ成分溶出の防止、化粧層の無機系基材への浸透防止、化粧層の密着性向上、無機質系基材の色調の隠蔽、さらには化粧層塗布前の下地の平滑化等を目的に、基材と化粧層との間にベースコート層を設けることも好ましい。
[Base coat layer]
In the decorative board of the present invention, prevention of elution of alkaline components from the inorganic base material, prevention of penetration of the decorative layer into the inorganic base material, improvement of adhesion of the decorative layer, concealment of the color tone of the inorganic base material, and further. It is also preferable to provide a base coat layer between the base material and the decorative layer for the purpose of smoothing the base before applying the decorative layer.
ベースコート層を有する具体的な構成例としては、図２に示したように、基材１上にベースコート層４を設け、当該ベースコート層４上に化粧層２と、クリア層３を有する構成が好ましく例示できる。 As a specific configuration example having the base coat layer, as shown in FIG. 2, a configuration in which the base coat layer 4 is provided on the base material 1 and the decorative layer 2 and the clear layer 3 are provided on the base coat layer 4 is preferable. It can be exemplified.
ベースコート層に使用される樹脂としてはイソシアネート樹脂、ウレタンアクリレート樹脂、エポキシアクリレート樹脂、ポリエステルアクリレート樹脂、アクリル樹脂、ウレタン樹脂、エポキシ樹脂、ポリエステル樹脂、アクリルシリコーン樹脂等が使用される。また、これらは紫外線硬化型でも熱硬化型でもよい。 As the resin used for the base coat layer, isocyanate resin, urethane acrylate resin, epoxy acrylate resin, polyester acrylate resin, acrylic resin, urethane resin, epoxy resin, polyester resin, acrylic silicone resin and the like are used. Further, these may be ultraviolet curable type or thermosetting type.
これら機能は一つのベースコート層に全てを割り当てて発現させてもよいが、ベースコート層の果たす機能を分担する複数の層を積層して使用し、それらの間で果たすべき機能を割り当てて発現させたほうが、使用できる原材料の種類も、またそれらを用いた設計の幅も格段と多くなる。 All of these functions may be assigned to one base coat layer and expressed, but a plurality of layers sharing the functions of the base coat layer are laminated and used, and the functions to be performed are assigned and expressed among them. The types of raw materials that can be used and the range of designs that use them are much wider.
当該構成の例としては、例えば、図３に示したように、ベースコート層４として、シーラー層５と目止め処理層６とからなるベースコート層を使用する構成を好ましく例示できる。当該構成においては、シーラー層により、無機系基材からのアルカリ成分溶出の防止、目止め処理層の無機系基材への浸透防止を図り、シーラー層上に形成される目どめ処理層により、無機質系基材の色調の隠蔽、化粧層塗布前の下地の平滑化を図る態様が例示できる。当該態様においては、シーラー層としてイソシアネート樹脂を、シーラー層上に形成される目どめ処理層としてエポキシアクリルアクリレート樹脂を使用すると、各々の機能を効果的に発現させやすくなるため好ましい。 As an example of the configuration, for example, as shown in FIG. 3, a configuration using a base coat layer composed of a sealer layer 5 and a sealing treatment layer 6 as the base coat layer 4 can be preferably exemplified. In this configuration, the sealer layer is used to prevent the elution of alkaline components from the inorganic base material, the sealing treatment layer is prevented from penetrating into the inorganic base material, and the sealing treatment layer formed on the sealer layer is used. Examples thereof include concealing the color tone of the inorganic base material and smoothing the base material before applying the decorative layer. In this embodiment, it is preferable to use an isocyanate resin as the sealer layer and an epoxy acrylic acrylate resin as the sealing treatment layer formed on the sealer layer because each function can be effectively exhibited.
シーラー層は、樹脂及び必要に応じて溶剤等を含有するシーラー層用塗料から形成される。シーラー層用塗料の塗布においては、その目的に応じて塗布量を調整することができるが、無機系基材からのアルカリ成分溶出の防止、化粧層の無機系基材への浸透防止等をはかる場合、シーラー層の塗布量は乾燥塗膜で１５～１００ｇ／ｍ２が好ましい。 The sealer layer is formed of a paint for a sealer layer containing a resin and, if necessary, a solvent or the like. When applying the sealer layer paint, the amount of application can be adjusted according to the purpose, but it is necessary to prevent the elution of alkaline components from the inorganic base material and prevent the decorative layer from penetrating into the inorganic base material. In this case, the coating amount of the sealer layer is preferably 15 to 100 g / m 2 for the dry coating film.
目どめ処理層は、樹脂及び必要に応じて体質顔料等の添加剤を含有する目止め処理層用塗料から形成される。使用する顔料としては、炭酸カルシウム、タルク等の顔料を好ましく使用できる。目止め処理層用塗料においては使用する樹脂の使用量を増加するとより表面平滑性を高めることができ、その上に形成する化粧層の平滑性や光沢を高めることが可能である。しかし本発明の化粧板においては、無機質系基材の高い不燃性能を最大限発揮させることを重視し、樹脂の使用はむしろ必要最低限に留めつつ化粧板の意匠性や諸機能を発揮させることが好ましく、上記目どめ処理層の塗布量は乾燥塗膜で５０～２００ｇ／ｍ２、有機固形分配合比は３０～６０質量％が好ましく、４０～５０質量％がさらに好ましい。 The sealing treatment layer is formed of a coating material for a sealing treatment layer containing a resin and, if necessary, an additive such as an extender pigment. As the pigment to be used, a pigment such as calcium carbonate or talc can be preferably used. In the paint for the sealing treatment layer, the surface smoothness can be further improved by increasing the amount of the resin used, and the smoothness and gloss of the decorative layer formed on the surface smoothness can be further improved. However, in the decorative board of the present invention, emphasis is placed on maximizing the high noncombustible performance of the inorganic base material, and the design and various functions of the decorative board should be exhibited while the use of resin is rather kept to the minimum necessary. The coating amount of the sealing treatment layer is preferably 50 to 200 g / m 2 for the dry coating film, the organic solid content mixing ratio is preferably 30 to 60% by mass, and more preferably 40 to 50% by mass.
［化粧板］
本発明の化粧板は、上記のとおり、無機系基材上に着色剤を含有する化粧層とクリア層とを有し、クリア層が抗ウイルス剤を１０質量％以下で含有し、その乾燥塗布量が０．２～２５ｇ／ｍ２である。本発明の化粧板は、当該構成により、良好な意匠性を有し、光照射による変色が生じにくく良好な外観を有する化粧板を低コストで実現できる。
[Decorative board]
As described above, the decorative board of the present invention has a decorative layer containing a colorant and a clear layer on an inorganic base material, and the clear layer contains an antiviral agent in an amount of 10% by mass or less and is dry-coated. The amount is 0.2 to 25 g / m 2 . With this configuration, the decorative board of the present invention can realize a decorative board having good designability, less likely to cause discoloration due to light irradiation, and having a good appearance at low cost.
また、クリア層の配合や種々の添加剤の添加を行うことにより、種々の追加機能をクリア層に付加することができる。クリア層形成前の化粧板と光沢度と色差が近似し、外観は、クリア層形成前の化粧板と識別し難いほど差の小さいものとした化粧板は、クリア層を有さない化粧板と、外観上の差異を生じさせることなく、違和感なく併用することができる。クリア層を有さない化粧板は該クリア層に付随する追加機能は有さないが、クリア層が形成されていない分、より優れた不燃性能を有する。このため、クリア層を有する追加機能の付加された化粧板と設置箇所に応じて使い分けることにより、全体として均質で統一感のある良好な意匠性と優れた不燃性能を維持しつつ、それぞれの設置箇所に要請される種々の追加機能を発揮させることが可能となる。 Further, various additional functions can be added to the clear layer by blending the clear layer and adding various additives. The glossiness and color difference are similar to those of the decorative board before the formation of the clear layer, and the appearance is so small that it is difficult to distinguish it from the decorative board before the formation of the clear layer. , Can be used together without any discomfort without causing a difference in appearance. The decorative board having no clear layer does not have the additional function associated with the clear layer, but has better nonflammability because the clear layer is not formed. For this reason, by using a decorative board with an additional function that has a clear layer and using it properly according to the installation location, each installation is maintained while maintaining good design and excellent non-combustible performance with a uniform and unified feeling as a whole. It is possible to exert various additional functions required for the location.
例えばクリア層に表面硬度の向上機能付加する場合、必ずしも家屋等の建築物の内装面全てに該機能の付加の必要の無い場合がある。例えば居住者の手の届かない壁面の高所や天井などには優れた表面硬度が必要とされず、むしろ不燃性能を高めておくことが好ましい。このような場合においては表面硬度を高めた組成のクリア層を有する化粧板と、該クリア層を有さずその分不燃性能のより優れた化粧板を設置箇所に応じて使用することが、内装面全体の意匠性、不燃性能向上のためには好ましい。 For example, when the function of improving the surface hardness is added to the clear layer, it may not always be necessary to add the function to all the interior surfaces of a building such as a house. For example, excellent surface hardness is not required for high places on walls and ceilings that are out of reach of residents, but rather it is preferable to improve nonflammable performance. In such a case, it is possible to use a decorative board having a clear layer having a composition with an increased surface hardness and a decorative board having no clear layer and having better non-combustible performance depending on the installation location. It is preferable for improving the design and non-combustible performance of the entire surface.
さらに、例えば化粧層中において、下地の隠蔽機能が高い酸化チタンを添加した場合、化粧層における酸化チタンの研磨性を抑制するためにクリア層を使用することもできる。化粧層上にクリア層を形成することで酸化チタン表面を被覆する被膜を形成し、かつクリア層形成後の化粧板の表面の外観が、クリア層形成前の化粧層の表面との間で、識別不可能なほど小さい差異しか生じない場合。クリア層を形成することにより化粧層の研磨性を抑制した化粧板を建築物の内装面の例えば壁面の低い位置に使用し、居住者の手の届かないような壁面の高所や天井には、むしろ不燃化性能を重視したクリア層を有さない化粧板を使用することによって、内装面全体の高い意匠性と優れた不燃性能を維持しつつ、酸化チタンを化粧層に使用した化粧板の有する研磨性を適正に抑え、接触金属等の削れによる金属汚れを防止することができる。本発明は、このような酸化チタンを化粧層に使用した構成において、特に好適に意匠性や耐光性を実現できる。 Further, for example, when titanium oxide having a high underlying hiding function is added in the decorative layer, a clear layer can be used in order to suppress the abrasiveness of titanium oxide in the decorative layer. By forming a clear layer on the decorative layer, a film covering the surface of titanium oxide is formed, and the appearance of the surface of the decorative board after the formation of the clear layer is different from the surface of the decorative layer before the formation of the clear layer. When the difference is so small that it cannot be discerned. A decorative board that suppresses the polishability of the decorative layer by forming a clear layer is used on the interior surface of a building, for example, at a low position on the wall surface, and is used for high places and ceilings on the wall surface that are out of the reach of residents. Rather, by using a decorative board that does not have a clear layer that emphasizes non-combustible performance, the decorative board that uses titanium oxide for the decorative layer while maintaining the high design and excellent non-combustible performance of the entire interior surface. It is possible to appropriately suppress the polishing property and prevent metal stains due to scraping of contact metal and the like. INDUSTRIAL APPLICABILITY The present invention can realize designability and light resistance particularly preferably in a configuration using such titanium oxide as a decorative layer.
本発明の化粧板は、さらに好適な不燃性能を付与するために、有機成分量の総量を２５０ｇ／ｍ２以下とすることが好ましく、２００ｇ／ｍ２以下とすることがより好ましく、１８０ｇ／ｍ２以下とすることがさらに好ましい。当該範囲とすることで、クリア層を有さない化粧板との組み合わせにおいて、設置箇所全般にわたって特に好適な不燃性能を実現できる。本発明の化粧板は、このような不燃性能を付与した場合にも、低い光沢度と透明性とを実現でき、化粧層の良好な色味を有しつつ、好適な艶消し性を実現できる。 In the decorative board of the present invention, the total amount of organic components is preferably 250 g / m 2 or less, more preferably 200 g / m 2 or less, and 180 g / m in order to impart more suitable non-combustible performance. It is more preferably 2 or less. Within this range, it is possible to realize particularly suitable non-combustible performance over the entire installation location in combination with a decorative board having no clear layer. The decorative board of the present invention can realize low glossiness and transparency even when such nonflammable performance is imparted, and can realize suitable matte property while having a good color of the decorative layer. ..
本発明の化粧板は、家屋、建築物等の内装面や外装面である外壁、内壁、床、天井等の建築構造の被覆の他、庇やドア等の建築構造の付設物、あるいはキッチン設備等の台所施設や収納棚等の建築構造の内外に設置される家具、設備等の物品の表面に対して適用することで、上記好適な効果を生じることが可能となる。 The decorative board of the present invention covers the interior and exterior surfaces of a house, a building, and the like, such as an outer wall, an inner wall, a floor, and a ceiling, as well as an attachment to the building structure such as an eaves and a door, or a kitchen facility. By applying it to the surface of articles such as furniture and equipment installed inside and outside a building structure such as a kitchen facility such as a storage shelf or a storage shelf, the above-mentioned suitable effect can be obtained.
＜実施例１＞
［クリア層形成前の化粧板（白色塗装板）の作製］
まず、厚さ６ｍｍの珪酸カルシウム板（三菱マテリアル建材社製ヒシタイカ＃７０）の片面に対して、珪酸カルシウム板の表層強化及びアルカリ成分の溶出を防止するための固形分比５０％ＭＤＩ（日本ポリウレタン製ＭＲ－１００）をロールコーターで乾燥時の塗布量が４０ｇ／ｍ２となるように塗工し、ベースコート層の一つであってシーラー処理を行うシーラー層を形成し、十分に乾燥させた。次に、その上から目どめ処理層として固形分比１００％のエポキシアクリレート系紫外線硬化型塗料（ＤＩＣ製ＡＣ－１２）をロールコーターで乾燥時の塗布量１００ｇ／ｍ２となるように塗工し、上記シーラー層と併せてベースコート層を形成した。次に、その上からサンディング加工を行い、表面が平滑な下地処理済み珪酸カルシウム板を得た。
<Example 1>
[Making a decorative board (white painted board) before forming a clear layer]
First, with respect to one side of a 6 mm thick calcium silicate plate (Hishitaika # 70 manufactured by Mitsubishi Materials Building Materials Co., Ltd.), a solid content ratio of 50% MDI (Polyurethane Japan) for strengthening the surface layer of the calcium silicate plate and preventing elution of alkaline components. MR-100) manufactured by MR-100) was coated with a roll coater so that the coating amount at the time of drying was 40 g / m 2 , to form a sealer layer which is one of the base coat layers and to be subjected to a sealer treatment, and was sufficiently dried. .. Next, an epoxy acrylate-based ultraviolet curable paint (AC-12 manufactured by DIC) having a solid content ratio of 100% is applied from above as a blinding treatment layer with a roll coater so that the coating amount at the time of drying is 100 g / m 2 . A base coat layer was formed together with the above sealer layer. Next, a sanding process was performed on the surface to obtain a surface-treated calcium silicate plate having a smooth surface.
次に、その上から化粧層用塗料として、二液タイプの白色系アクリルウレタン系エナメル塗料（ＤＩＣ製ＵＣカラーＦＫ Ｄ－０２３ＮＴ（酸化チタン含有））をフローコーターで乾燥時の塗布量で４０ｇ／ｍ２塗工して、クリア層形成前の化粧板（白色塗装板）を得た。化粧層用塗膜中の酸化チタンの含有率は４０％である。 Next, as a paint for the decorative layer, a two-component type white acrylic urethane-based enamel paint (UC color FK D-023NT (containing titanium oxide) manufactured by DIC) was applied on top of it with a flow coater in an amount of 40 g / when dried. After m 2 coating, a decorative plate (white coated plate) before forming the clear layer was obtained. The content of titanium oxide in the coating film for the decorative layer is 40%.
［クリア層用塗料の作製］
次に、クリア層用塗料として二液タイプの白色系アクリルウレタン系クリア塗料（ＤＩＣ製ＵＣクリヤーＤＦクリーン０１（酸化チタン非含有））１００部に、抗ウイルス剤（銀イオン系担持ガラスタイプ 平均粒径３ミクロン）を乾燥後のクリア層における含有率が１質量％になるように配合し、クリア層用塗料を作製した。
[Making paint for clear layer]
Next, as a paint for the clear layer, 100 parts of a two-component type white acrylic urethane clear paint (UC Clear DF Clean 01 (without titanium oxide) made by DIC) and an antivirus agent (silver ion-supported glass type average grain) (Diameter 3 microns) was blended so that the content in the clear layer after drying was 1% by mass to prepare a paint for the clear layer.
［クリア層付き化粧板の特性］
上記クリア層形成前の化粧板の上にクリア層用塗料をナチュラルロールコーターで乾燥塗布量１ｇ／ｍ２となるように塗工して、実施例１のクリア層付きの白色化粧板を得た。その後、実施例１のクリア塗装白色化粧板の６０°光沢度をグロスメーター（堀場製作所製ＩＧ－３３０）により測定した結果、１５となった。
[Characteristics of decorative board with clear layer]
The paint for the clear layer was applied on the decorative plate before forming the clear layer with a natural roll coater so as to have a dry coating amount of 1 g / m 2 , and a white decorative plate with the clear layer of Example 1 was obtained. .. After that, the 60 ° glossiness of the clear-painted white veneer of Example 1 was measured by a gloss meter (IG-330 manufactured by HORIBA, Ltd.), and the result was 15.
また、実施例１のクリア層付きの白色化粧板の耐光性を調べるため、合板の日本農林規格（平成２６年改訂版）で定められた退色試験を実施した。退色試験用水銀ランプ400Wを用いて、試験体に光を４８時間照射し、光照射前後の色差ΔＥを色差計（ＪＵＫＩ製ＪＰ７２００Ｃ：Ｄ６５光源１０度視野を使用）で測定した。ここで色差ΔＥは下記のハンターの色差式で得られるものを用いた。
ΔＥ＝｛（ΔＬ）２＋（Δａ）２＋（Δｂ）２｝１／２
ここでΔＬとΔａ，Δｂは、比較する二つの表面色の明度指数Ｌと色座標ａ，ｂの差である。
測定の結果、ΔＥ＝０．７であった。
In addition, in order to investigate the light resistance of the white decorative board with the clear layer of Example 1, a fading test specified by the Japanese Agricultural Standards (2014 revised edition) of plywood was carried out. The test piece was irradiated with light for 48 hours using a mercury lamp for fading test 400W, and the color difference ΔE before and after the light irradiation was measured with a color difference meter (JP7200C manufactured by JUKI: using a D65 light source 10 degree field). Here, as the color difference ΔE, the one obtained by the color difference formula of the hunter below was used.
ΔE = {(ΔL) 2 + (Δa) 2 + (Δb) 2 } 1/2
Here, ΔL and Δa, Δb are the differences between the brightness indexes L and the color coordinates a and b of the two surface colors to be compared.
As a result of the measurement, ΔE = 0.7.
＜実施例２＞
実施例１と同様の方法で作製したクリア層形成前の化粧板（白色塗装板）上に、クリア層用塗料の抗ウイルス剤の含有率が３質量％とした以外は実施例１と同様な条件でクリア層を形成して実施例２のクリア層付き化粧板を得た。実施例１と同様に光沢度を測定した結果、１４となった。また、実施例１と同様の方法で耐光性試験（退色試験）を実施したところ、ΔＥ＝０．７であった。
<Example 2>
The same as in Example 1 except that the content of the antiviral agent in the clear layer paint was 3% by mass on the decorative plate (white coated plate) before forming the clear layer produced by the same method as in Example 1. A clear layer was formed under the conditions to obtain a decorative board with a clear layer of Example 2. As a result of measuring the glossiness in the same manner as in Example 1, it was 14. Moreover, when the light resistance test (fading test) was carried out by the same method as in Example 1, ΔE = 0.7.
＜実施例３＞
実施例１と同様の方法で作製したクリア層形成前の化粧板（白色塗装板）上に、クリア層用塗料の抗ウイルス剤の含有率が３質量％、乾燥塗布量が２ｇ／ｍ２とした以外は実施例１と同様な条件でクリア層を形成して実施例３のクリア層付き化粧板を得た。実施例１と同様に光沢度を測定した結果、１６となった。また、実施例１と同様の方法で耐光性試験（退色試験）を実施したところ、ΔＥ＝０．８であった。
<Example 3>
On the decorative board (white coated board) before forming the clear layer produced by the same method as in Example 1, the content of the antiviral agent of the clear layer paint was 3% by mass, and the dry coating amount was 2 g / m 2 . A clear layer was formed under the same conditions as in Example 1 to obtain a decorative board with a clear layer of Example 3. As a result of measuring the glossiness in the same manner as in Example 1, the result was 16. Moreover, when the light resistance test (fading test) was carried out by the same method as in Example 1, ΔE = 0.8.
＜実施例４＞
実施例１と同様の方法で作製したクリア層形成前の化粧板（白色塗装板）上に、クリア層用塗料の抗ウイルス剤の含有率が３質量％、乾燥塗布量が３ｇ／ｍ２となるようにバーコーターで塗工した以外は実施例１と同様な条件でクリア層を形成して実施例４のクリア層付き化粧板を得た。実施例１と同様に光沢度を測定した結果、１７となった。また、実施例１と同様の方法で耐光性試験（退色試験）を実施したところ、ΔＥ＝０．６であった。
<Example 4>
On the decorative plate (white coating plate) before forming the clear layer produced by the same method as in Example 1, the content of the antiviral agent of the paint for the clear layer was 3% by mass, and the dry coating amount was 3 g / m 2 . A clear layer was formed under the same conditions as in Example 1 except that the coating was applied with a bar coater so as to obtain a decorative board with a clear layer of Example 4. As a result of measuring the glossiness in the same manner as in Example 1, it was 17. Moreover, when the light resistance test (fading test) was carried out by the same method as in Example 1, ΔE = 0.6.
＜実施例５＞
実施例１と同様の方法で作製したクリア層形成前の化粧板（白色塗装板）上に、クリア層用塗料の抗ウイルス剤の含有率が３質量％、乾燥塗布量が７ｇ／ｍ２となるようにバーコーターで塗工した以外は実施例１と同様な条件でクリア層を形成して実施例５のクリア層付き化粧板を得た。実施例１と同様に光沢度を測定した結果、１９となった。また、実施例１と同様の方法で耐光性試験（退色試験）を実施したところ、ΔＥ＝１．１であった。
<Example 5>
On the decorative plate (white coating plate) before forming the clear layer produced by the same method as in Example 1, the content of the antiviral agent of the paint for the clear layer was 3% by mass, and the dry coating amount was 7 g / m 2 . A clear layer was formed under the same conditions as in Example 1 except that the coating was applied with a bar coater so as to obtain a decorative board with a clear layer of Example 5. As a result of measuring the glossiness in the same manner as in Example 1, it was 19. Moreover, when the light resistance test (fading test) was carried out by the same method as in Example 1, ΔE = 1.1.
＜実施例６＞
実施例１と同様の方法で作製したクリア層形成前の化粧板（白色塗装板）上に、クリア層用塗料の抗ウイルス剤の含有率が３質量％、乾燥塗布量が１０ｇ／ｍ２となるようにバーコーターで塗工した以外は実施例１と同様な条件でクリア層を形成して実施例６のクリア層付き化粧板を得た。実施例１と同様に光沢度を測定した結果、１９となった。また、実施例１と同様の方法で耐光性試験（退色試験）を実施したところ、ΔＥ＝１．０であった。
<Example 6>
On the decorative plate (white coating plate) before forming the clear layer produced by the same method as in Example 1, the content of the antiviral agent of the paint for the clear layer was 3% by mass, and the dry coating amount was 10 g / m 2 . A clear layer was formed under the same conditions as in Example 1 except that the coating was applied with a bar coater so as to obtain a decorative board with a clear layer of Example 6. As a result of measuring the glossiness in the same manner as in Example 1, it was 19. Moreover, when the light resistance test (fading test) was carried out by the same method as in Example 1, ΔE = 1.0.
＜実施例７＞
実施例１と同様の方法で作製したクリア層形成前の化粧板（白色塗装板）上に、クリア層用塗料の抗ウイルス剤の含有率が３質量％、乾燥塗布量が１４ｇ／ｍ２となるようにバーコーターで塗工した以外は実施例１と同様な条件でクリア層を形成して実施例７のクリア層付き化粧板を得た。実施例１と同様に光沢度を測定した結果、２０となった。また、実施例１と同様の方法で耐光性試験（退色試験）を実施したところ、ΔＥ＝１．０であった。
<Example 7>
On the decorative plate (white coating plate) before forming the clear layer produced by the same method as in Example 1, the content of the antiviral agent of the paint for the clear layer was 3% by mass, and the dry coating amount was 14 g / m 2 . A clear layer was formed under the same conditions as in Example 1 except that the coating was applied with a bar coater so as to obtain a decorative board with a clear layer of Example 7. As a result of measuring the glossiness in the same manner as in Example 1, the result was 20. Moreover, when the light resistance test (fading test) was carried out by the same method as in Example 1, ΔE = 1.0.
＜実施例８＞
実施例１と同様の方法で作製したクリア層形成前の化粧板（白色塗装板）上に、クリア層用塗料の抗ウイルス剤の含有率が３質量％、乾燥塗布量が１９ｇ／ｍ２となるようにバーコーターで塗工した以外は実施例１と同様な条件でクリア層を形成して実施例８のクリア層付き化粧板を得た。実施例１と同様に光沢度を測定した結果、２１となった。また、実施例１と同様の方法で耐光性試験（退色試験）を実施したところ、ΔＥ＝１．５であった。
<Example 8>
On the decorative plate (white coating plate) before forming the clear layer produced by the same method as in Example 1, the content of the antiviral agent of the paint for the clear layer was 3% by mass, and the dry coating amount was 19 g / m 2 . A clear layer was formed under the same conditions as in Example 1 except that the coating was applied with a bar coater so as to obtain a decorative board with a clear layer of Example 8. As a result of measuring the glossiness in the same manner as in Example 1, the result was 21. Moreover, when the light resistance test (fading test) was carried out by the same method as in Example 1, ΔE = 1.5.
＜実施例９＞
実施例１と同様の方法で作製したクリア層形成前の化粧板（白色塗装板）上に、クリア層用塗料の抗ウイルス剤の含有率が５質量％、乾燥塗布量が２ｇ／ｍ２とした以外は実施例１と同様な条件でクリア層を形成して実施例９のクリア層付き化粧板を得た。実施例１と同様に光沢度を測定した結果、１５となった。また、実施例１と同様の方法で耐光性試験（退色試験）を実施したところ、ΔＥ＝１．３であった。
<Example 9>
On the decorative board (white coated board) before forming the clear layer produced by the same method as in Example 1, the content of the antiviral agent of the clear layer paint was 5% by mass, and the dry coating amount was 2 g / m 2 . A clear layer was formed under the same conditions as in Example 1 to obtain a decorative board with a clear layer of Example 9. As a result of measuring the glossiness in the same manner as in Example 1, it was 15. Moreover, when the light resistance test (fading test) was carried out by the same method as in Example 1, ΔE = 1.3.
＜実施例１０＞
実施例１と同様の方法で作製したクリア層形成前の化粧板（白色塗装板）上に、クリア層用塗料の抗ウイルス剤の含有率が７質量％、乾燥塗布量が２ｇ／ｍ２とした以外は実施例１と同様な条件でクリア層を形成して実施例１０のクリア層付き化粧板を得た。実施例１と同様に光沢度を測定した結果、１４となった。また、実施例１と同様の方法で耐光性試験（退色試験）を実施したところ、ΔＥ＝１．６であった。
<Example 10>
On the decorative board (white coated board) before forming the clear layer produced by the same method as in Example 1, the content of the antiviral agent of the clear layer paint was 7% by mass, and the dry coating amount was 2 g / m 2 . A clear layer was formed under the same conditions as in Example 1 to obtain a decorative board with a clear layer of Example 10. As a result of measuring the glossiness in the same manner as in Example 1, it was 14. Moreover, when the light resistance test (fading test) was carried out by the same method as in Example 1, ΔE = 1.6.
＜比較例１＞
実施例１と同様の方法で作成したクリア層形成前の化粧板（白色塗装板）を比較例１とした。実施例１と同様に光沢度を測定した結果、６となった。また、実施例１と同様の方法で耐光性試験（退色試験）を実施したところ、ΔＥ＝０．５であった。
<Comparative Example 1>
The decorative board (white coated board) before forming the clear layer prepared by the same method as in Example 1 was designated as Comparative Example 1. As a result of measuring the glossiness in the same manner as in Example 1, the result was 6. Moreover, when the light resistance test (fading test) was carried out by the same method as in Example 1, ΔE = 0.5.
比較例１のクリア層形成前の化粧板の白色化粧層用塗料中に、実施例１で用いた抗ウイルス剤を、乾燥後の化粧層用塗料における抗ウイルス剤の含有率が３質量％になるように配合した以外は、同様の方法で作成したクリア層形成前の化粧板（白色塗装板）を比較例２とする。実施例１と同様に光沢度を測定した結果、５となった。また、実施例１と同様の方法で耐光性試験（退色試験）を実施したところ、黒く変色し、ΔＥ＝２．７であった。 The content of the antiviral agent used in Example 1 in the paint for the decorative layer after drying was reduced to 3% by mass in the paint for the white decorative layer of the decorative board before the formation of the clear layer of Comparative Example 1. Comparative Example 2 is a decorative board (white coated board) before forming the clear layer, which was prepared by the same method except that the mixture was blended so as to be. As a result of measuring the glossiness in the same manner as in Example 1, it was 5. Moreover, when the light resistance test (fading test) was carried out by the same method as in Example 1, the color changed to black and ΔE = 2.7.
＜比較例３＞
比較例１のクリア層形成前の化粧板の白色化粧層用塗料中に、実施例１で用いた抗ウイルス剤を、乾燥後の化粧層用塗料における抗ウイルス剤の含有率が５質量％になるように配合した以外は、同様の方法で作成したクリア層形成前の化粧板（白色塗装板）を比較例３とする。実施例１と同様に光沢度を測定した結果、４となった。また、実施例１と同様の方法で耐光性試験（退色試験）を実施したところ、黒く変色し、ΔＥ＝４．０であった。
<Comparative Example 3>
The content of the antiviral agent used in Example 1 in the paint for the white decorative layer of the decorative board before the formation of the clear layer of Comparative Example 1 was 5% by mass in the paint for the decorative layer after drying. Comparative Example 3 is a decorative plate (white coated plate) before forming a clear layer, which was prepared by the same method except that it was blended so as to be. As a result of measuring the glossiness in the same manner as in Example 1, it was 4. Moreover, when the light resistance test (fading test) was carried out by the same method as in Example 1, the color changed to black and ΔE = 4.0.
＜比較例４＞
比較例１のクリア層形成前の化粧板の白色化粧層用塗料中に、実施例１で用いた抗ウイルス剤を、乾燥後の化粧層用塗料における抗ウイルス剤の含有率が７質量％になるように配合した以外は、同様の方法で作成したクリア層形成前の化粧板（白色塗装板）を比較例４とする。実施例１と同様に光沢度を測定した結果、４となった。また、実施例１と同様の方法で耐光性試験（退色試験）を実施したところ、黒く変色し、ΔＥ＝５．６であった。
<Comparative Example 4>
The content of the antiviral agent used in Example 1 in the paint for the white decorative layer of the decorative board before the formation of the clear layer of Comparative Example 1 was 7% by mass in the paint for the decorative layer after drying. Comparative Example 4 is a decorative board (white coated board) before forming the clear layer, which was prepared by the same method except that the mixture was blended so as to be. As a result of measuring the glossiness in the same manner as in Example 1, it was 4. Moreover, when the light resistance test (fading test) was carried out by the same method as in Example 1, the color changed to black and ΔE = 5.6.
＜比較例５＞
実施例１と同様の方法で作製したクリア層形成前の化粧板（白色塗装板）上に、抗ウイルス剤を配合しないクリア層用塗料を乾燥塗布量が１ｇ／ｍ２となるように塗工した以外は実施例１と同様な条件でクリア層を形成して比較例５のクリア層付き化粧板を得た。実施例１と同様に光沢度を測定した結果、１６となった。また、実施例１と同様の方法で耐光性試験（退色試験）を実施したところ、ΔＥ＝０．４であった。
<Comparative Example 5>
On the decorative plate (white coating plate) before forming the clear layer produced by the same method as in Example 1, a paint for a clear layer not containing an antiviral agent is applied so that the dry coating amount is 1 g / m 2 . A clear layer was formed under the same conditions as in Example 1 to obtain a decorative board with a clear layer of Comparative Example 5. As a result of measuring the glossiness in the same manner as in Example 1, the result was 16. Moreover, when the light resistance test (fading test) was carried out by the same method as in Example 1, ΔE = 0.4.
＜比較例６＞
実施例１と同様の方法で作製したクリア層形成前の化粧板（白色塗装板）上に、抗ウイルス剤を配合しないクリア層用塗料を乾燥塗布量が２ｇ／ｍ２となるように塗工した以外は実施例１と同様な条件でクリア層を形成して比較例６のクリア層付き化粧板を得た。実施例１と同様に光沢度を測定した結果、１９となった。また、実施例１と同様の方法で耐光性試験（退色試験）を実施したところ、ΔＥ＝０．９であった。
<Comparative Example 6>
On the decorative plate (white coating plate) before forming the clear layer produced by the same method as in Example 1, a paint for a clear layer not containing an antiviral agent is applied so that the dry coating amount is 2 g / m 2 . A clear layer was formed under the same conditions as in Example 1 to obtain a decorative board with a clear layer of Comparative Example 6. As a result of measuring the glossiness in the same manner as in Example 1, it was 19. Moreover, when the light resistance test (fading test) was carried out by the same method as in Example 1, ΔE = 0.9.
＜比較例７＞
実施例１と同様の方法で作製したクリア層形成前の化粧板（白色塗装板）上に、抗ウイルス剤を配合しないクリア層用塗料を乾燥塗布量が２７ｇ／ｍ２となるようにバーコーターで塗工した以外は実施例１と同様な条件でクリア層を形成して比較例７のクリア層付き化粧板を得た。実施例１と同様に光沢度を測定した結果、３７となった。また、実施例１と同様の方法で耐光性試験（退色試験）を実施したところ、黄色く変色し、ΔＥ＝２．３であった。
<Comparative Example 7>
On a decorative plate (white coating plate) before forming the clear layer produced by the same method as in Example 1, a paint for a clear layer not containing an antiviral agent is applied to a bar coater so that the dry coating amount is 27 g / m 2 . A clear layer was formed under the same conditions as in Example 1 except that the coating was applied in 1 to obtain a decorative board with a clear layer of Comparative Example 7. As a result of measuring the glossiness in the same manner as in Example 1, it was 37. Moreover, when the light resistance test (fading test) was carried out by the same method as in Example 1, the color changed to yellow and ΔE = 2.3.
＜比較例８＞
実施例１と同様の方法で作製したクリア層形成前の化粧板（白色塗装板）上に、クリア層用塗料の抗ウイルス剤の含有率が３質量％、乾燥塗布量が３０ｇ／ｍ２となるようにバーコーターで塗工した以外は実施例１と同様な条件でクリア層を形成して比較例８のクリア層付き化粧板を得た。実施例１と同様に光沢度を測定した結果、３６となった。また、実施例１と同様の方法で耐光性試験（退色試験）を実施したところ、黄色く変色し、ΔＥ＝２．６であった。
<Comparative Example 8>
On the decorative plate (white coating plate) before forming the clear layer produced by the same method as in Example 1, the content of the antiviral agent of the paint for the clear layer was 3% by mass, and the dry coating amount was 30 g / m 2 . A clear layer was formed under the same conditions as in Example 1 except that the coating was applied with a bar coater so as to obtain a decorative plate with a clear layer of Comparative Example 8. As a result of measuring the glossiness in the same manner as in Example 1, it was 36. Moreover, when the light resistance test (fading test) was carried out by the same method as in Example 1, the color changed to yellow and ΔE = 2.6.
＜比較例９＞
実施例１と同様の方法で作製したクリア層形成前の化粧板（白色塗装板）上に、クリア層用塗料の抗ウイルス剤の含有率が３質量％、乾燥塗布量が５９ｇ／ｍ２となるようにバーコーターで塗工した以外は実施例１と同様な条件でクリア層を形成して比較例９のクリア層付き化粧板を得た。実施例１と同様に光沢度を測定した結果、７２となった。また、実施例１と同様の方法で耐光性試験（退色試験）を実施したところ、黄色く変色し、ΔＥ＝４．２であった。
<Comparative Example 9>
On the decorative plate (white coating plate) before forming the clear layer produced by the same method as in Example 1, the content of the antiviral agent of the paint for the clear layer was 3% by mass, and the dry coating amount was 59 g / m 2 . A clear layer was formed under the same conditions as in Example 1 except that the coating was applied with a bar coater so as to obtain a decorative plate with a clear layer of Comparative Example 9. As a result of measuring the glossiness in the same manner as in Example 1, it was 72. Moreover, when the light resistance test (fading test) was carried out by the same method as in Example 1, the color changed to yellow and ΔE = 4.2.
上記実施例１～１０の塗布量および抗ウイルス剤の含有率とその特性について、下記に一覧表を示す。 A list of the coating amounts of Examples 1 to 10 and the content of the antiviral agent and their characteristics are shown below.
上記比較例１～９の塗布量および抗ウイルス剤の含有率とその特性について、下記に一覧表を示す。 A list of the coating amounts of Comparative Examples 1 to 9 and the content of the antiviral agent and their characteristics are shown below.
表１と表２から明らかなように、実施例の化粧板は、比較例に示す抗ウイルス剤を含有する化粧板と比較して、光照射による変色が生じにくく良好な外観を保持できる。比較例２～４で示すように、化粧層用塗料（着色塗料）に抗ウイルス剤を配合すると、耐光試験で黒く変色する問題があるが、実施例のように着色顔料を含まないクリア層用塗料に抗ウイルス剤を配合することで、抗ウイルス剤特有の耐光性試験における黒変を抑え、有機系塗料に特有の黄変が僅かに発生するのみにすることができる。 As is clear from Tables 1 and 2, the decorative board of the example is less likely to cause discoloration due to light irradiation and can maintain a good appearance as compared with the decorative board containing the antiviral agent shown in the comparative example. As shown in Comparative Examples 2 to 4, when an antivirus agent is added to a decorative layer paint (colored paint), there is a problem that the color turns black in the light resistance test, but for a clear layer that does not contain a colored pigment as in the examples. By blending the antiviral agent with the paint, it is possible to suppress the blackening in the light resistance test peculiar to the antiviral agent and to cause only a slight yellowing peculiar to the organic paint.
Claims (7)
前記クリア層が化粧板の表層であり、
前記クリア層が抗ウイルス剤を含有し、
前記クリア層中の抗ウイルス剤の含有量が１０質量％以下であり、
前記クリア層の乾燥塗布量が０．２～３ｇ／ｍ２であり、
前記クリア層が体積平均粒子径１～１２μｍのシリカ粒子を含有し、クリア層中の前記シリカ粒子の含有量が１０質量％以下であることを特徴とする化粧板。 A decorative board having a decorative layer containing a colorant and a clear layer on a ceramic-based inorganic base material.
The clear layer is the surface layer of the decorative board, and is
The clear layer contains an antiviral agent and
The content of the antiviral agent in the clear layer is 10% by mass or less, and the content is 10% by mass or less.
The dry coating amount of the clear layer is 0.2 to 3 g / m 2 .
A decorative plate characterized in that the clear layer contains silica particles having a volume average particle diameter of 1 to 12 μm, and the content of the silica particles in the clear layer is 10% by mass or less .
前記化粧層および前記クリア層は、前記ベースコート層上に形成される請求項１～３のいずれかに記載の化粧板。 The decorative board includes a sealer layer containing an isocyanate-based resin formed on the ceramic-based inorganic substrate and a sealing treatment layer containing an epoxy acrylate-based resin formed on the sealer layer. Has an additional base coat layer,
The decorative board according to any one of claims 1 to 3, wherein the decorative layer and the clear layer are formed on the base coat layer .
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| JP6888725B1 (en) * | 2020-08-31 | 2021-06-16 | 凸版印刷株式会社 | Decorative sheets and materials |
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