JP2015080887A - Interior decorative sheet having antiviral properties - Google Patents

Interior decorative sheet having antiviral properties Download PDF

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JP2015080887A
JP2015080887A JP2013219264A JP2013219264A JP2015080887A JP 2015080887 A JP2015080887 A JP 2015080887A JP 2013219264 A JP2013219264 A JP 2013219264A JP 2013219264 A JP2013219264 A JP 2013219264A JP 2015080887 A JP2015080887 A JP 2015080887A
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inorganic additive
decorative sheet
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silver
zinc
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JP6229429B2 (en
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松沢　孝教
Takanori Matsuzawa
孝教 松沢
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Toppan Cosmo Inc
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Toppan Cosmo Inc
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Abstract

PROBLEM TO BE SOLVED: To provide an interior decorative sheet which has excellent antiviral properties and excellent various physical properties of the surface, can be easily produced and has antiviral properties.SOLUTION: There is provided an interior decorative sheet having antiviral properties in which a silver-based inorganic additive or a zinc-based inorganic additive is blended in a coating resin on the outermost surface of a decorative sheet, wherein the silver-based inorganic additive or the zinc-based inorganic additive has a true specific gravity of 2.5 or less and an average particle diameter of 1 μ or less and 10 to 30% of the silver-based inorganic additive or the zinc-based inorganic additive is blended at a solid content ratio to the coating resin on the outermost surface of the decorative sheet.

Description

本発明は絵柄印刷や表面エンボスなどの施された化粧シートに関するものであり、特には抗ウィルス性が必要とされるドア、窓枠、家具といった日常接触する機会の多い内装箇所に使用される、抗ウィルス性を有する内装用化粧シートに関する。   The present invention relates to a decorative sheet subjected to pattern printing, surface embossing, etc., and is used particularly in interior parts where there is a high chance of daily contact such as doors, window frames, and furniture that require antiviral properties. The present invention relates to an interior decorative sheet having antiviral properties.

化粧紙や化粧板等に防カビ性又は抗菌性を付与するため、防カビ剤又は抗菌剤を該当素材中に添加したり、練り込んだりする方法、又は後工程にて塗装する方法等が行われていた。また、防カビ性及び抗菌性を有する壁紙や化粧シートも公知のものであり市販されている。しかし、抗菌性を必要とするのは化粧材のごく薄い表面だけでよいが、従来は樹脂に練り込む方法や塗料に練り込む方法が取られており、必ずしも最適な抗菌性塗膜形成法とは言えなかった。   In order to impart antifungal or antibacterial properties to decorative paper, decorative boards, etc., a method of adding or kneading an antifungal agent or antibacterial agent into the corresponding material, or a method of painting in a later process is performed. It was broken. In addition, wallpaper and decorative sheets having antifungal and antibacterial properties are also known and commercially available. However, only a very thin surface of the cosmetic material needs to have antibacterial properties, but conventionally, a method of kneading into a resin or a method of kneading into a paint has been taken, and it is not always the best method for forming an antibacterial coating film. I could not say.

また、防カビ剤又は抗菌剤をプラスチック成形品等に練り込む場合は、製造工程やコストが増加したり、生産性が低下する等の問題が発生したりし易い。また、成形用樹脂や塗料用樹脂に抗菌剤を練り込む場合、その樹脂の中には樹脂組成物としての必要成分として顔料、染料、硬化剤、触媒等が混合されており、これらの物が抗菌剤に変色、抗菌作用の低下等の悪影響を与える場合があり、各樹脂との適性を個々に検討する必要がある。   In addition, when a fungicide or an antibacterial agent is kneaded into a plastic molded article or the like, problems such as an increase in the manufacturing process and cost, and a decrease in productivity are likely to occur. In addition, when an antibacterial agent is kneaded into a molding resin or a coating resin, pigments, dyes, curing agents, catalysts, and the like are mixed in the resin as necessary components as a resin composition. The antibacterial agent may be adversely affected such as discoloration and reduction of the antibacterial action, and it is necessary to individually examine the suitability with each resin.

従って、従来の樹脂組成物はそのまま使用することは出来ず、基材、用途毎に樹脂組成を検討する必要があり、作業が煩雑となる問題が生じる。また、抗菌剤を成形用樹脂に練り込む場合、大部分の抗菌剤は樹脂に練り込まれて成形品の中に入っていて抗菌作用を示さないため、抗菌剤の使用方法としては経済的に大きな問題となる。   Therefore, the conventional resin composition cannot be used as it is, and it is necessary to examine the resin composition for each base material and application, resulting in a problem of complicated operations. In addition, when an antibacterial agent is kneaded into a molding resin, most antibacterial agents are kneaded into the resin and contained in the molded product and do not exhibit antibacterial action. It becomes a big problem.

特公昭６３−５４０１３号公報Japanese Patent Publication No. 63-54013 特公平４−２８６４６号公報Japanese Patent Publication No. 4-28646 特開平１−３１３５３３JP-A-1-315333

本発明はこのような問題点を解決するためになされたものであり、すなわちその課題とするところは、抗ウィルス性にすぐれ、かつ表面の各種物性に優れ、製造が容易な抗ウィルス性を有する内装用化粧シートを提供することにある。   The present invention has been made to solve such problems. That is, the object of the present invention is to have excellent antiviral properties, excellent surface properties, and easy manufacturing. The object is to provide an interior decorative sheet.

本発明はこの課題を解決したものであり、すなわちその請求項１記載の発明は、化粧シート最表面のコーティング樹脂中に銀系無機添加剤又は亜鉛系無機添加剤を配合した抗ウィルス性を有する内装用化粧シートにおいて、前記銀系無機添加剤又は亜鉛系無機添加剤の真比重が２．５以下であり、かつ平均粒径が１μ以下であり、かつ前記化粧シート最表面のコーティング樹脂に対して固形分比率で１０〜３０％配合してなることを特徴とする抗ウィルス性を有する内装用化粧シートである。   The present invention solves this problem, that is, the invention according to claim 1 has antiviral properties in which a silver-based inorganic additive or a zinc-based inorganic additive is blended in the coating resin on the outermost surface of the decorative sheet. In the interior decorative sheet, the silver-based inorganic additive or zinc-based inorganic additive has a true specific gravity of 2.5 or less and an average particle size of 1 μm or less, and the coating resin on the outermost surface of the decorative sheet It is an interior decorative sheet having antiviral properties, characterized in that it is blended at a solid content ratio of 10 to 30%.

またその請求項２記載の発明は、前記銀系無機添加剤又は亜鉛系無機添加剤は、結晶構造中に銀イオン又は亜鉛イオンを担持させた構造であることを特徴とする請求項１に記載の抗ウィルス性を有する内装用化粧シートである。   The invention according to claim 2 is characterized in that the silver-based inorganic additive or zinc-based inorganic additive has a structure in which silver ions or zinc ions are supported in a crystal structure. This is an interior decorative sheet having antiviral properties.

本発明はその請求項１記載の発明により、最表面に配合する銀系無機添加剤又は亜鉛系無機添加剤の真比重と平均粒径と固形分比率を限定することで、抗ウィルス性を有しながらも耐汚染性、耐磨耗性、耐候性など各種耐性にすぐれ、製造が容易な抗ウィルス性を有する内装用化粧シートを得ることができるという作用効果を奏する。   According to the invention of claim 1, the present invention has antiviral properties by limiting the true specific gravity, average particle diameter, and solid content ratio of the silver-based inorganic additive or zinc-based inorganic additive to be blended on the outermost surface. On the other hand, there is an effect that it is possible to obtain an interior decorative sheet having antiviral properties that is excellent in various resistances such as contamination resistance, abrasion resistance, and weather resistance and that is easy to manufacture.

本発明はその請求項２記載の発明により、前記銀系無機添加剤又は亜鉛系無機添加剤は、結晶構造中に銀イオン又は亜鉛イオンを担持させた構造とすることで、前記比重と平均粒径と固形分比率を満たす銀系無機添加剤又は亜鉛系無機添加剤を容易に得ることができるという作用効果を奏する。又、銀系添加剤及び亜鉛系添加剤にする事で比重管理する事が容易になり、担持させる添加剤の種類を多孔質なゼオライト、シリカ等と組み合わせる事により抗ウィルス性能を発現しやすくする効果もある。   According to the invention of the second aspect of the present invention, the specific gravity and average particle size of the silver-based inorganic additive or zinc-based inorganic additive are such that the silver ion or zinc ion is supported in the crystal structure. There exists an effect that the silver type inorganic additive or zinc type inorganic additive which satisfy | fills a diameter and solid content ratio can be obtained easily. In addition, the specific gravity can be easily controlled by using silver-based additives and zinc-based additives, and antiviral performance can be easily expressed by combining the types of additives to be supported with porous zeolite, silica, etc. There is also an effect.

本発明の抗ウィルス性を有する内装用化粧シートの一実施例の断面の構造を示す説明図である。It is explanatory drawing which shows the structure of the cross section of one Example of the interior decorative sheet which has the antiviral property of this invention.

以下本発明を図面に基づき詳細に説明する。図１に本発明の抗ウィルス性を有する内装用化粧シートの一実施例の断面の構造を示す。基材シート１に絵柄模様層２、透明樹脂層３などを適宜設け、最表面のコーティング樹脂によるコーティング層４を設けてなる。   Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 shows a cross-sectional structure of an embodiment of an interior decorative sheet having antiviral properties of the present invention. A pattern layer 2, a transparent resin layer 3 and the like are appropriately provided on the base sheet 1, and a coating layer 4 made of the outermost coating resin is provided.

本発明における基材シート１としては、従来の化粧シートにおける基材シートとして使用可能なものであれば特に制限せず使用可能である。具体的には、ポリエチレン樹脂、ポリプロピレン樹脂といったオレフィン系樹脂フィルム、またはＥＶＡ系フィルム、ＰＥＴフィルムを初めとしてこれらの変成樹脂が用いられる。   As the base material sheet 1 in the present invention, any base material sheet that can be used as a base material sheet in a conventional decorative sheet can be used without particular limitation. Specifically, these modified resins such as olefin resin films such as polyethylene resins and polypropylene resins, EVA films, and PET films are used.

また、化粧シートとしての隠蔽性を確保するために、無機顔料などにより任意に着色を行う必要がある。さらに、耐候性向上のために酸化防止剤、紫外線吸収剤・光安定剤が適宜加えられる。これらの添加剤の種類、量に関してはとくに限定されるものではなく、フィルムの樹脂に一般的に使用されているものを添加すればよい。   Moreover, in order to ensure the concealment property as a decorative sheet, it is necessary to arbitrarily color with an inorganic pigment or the like. Furthermore, an antioxidant, an ultraviolet absorber and a light stabilizer are appropriately added to improve weather resistance. The type and amount of these additives are not particularly limited, and those generally used for film resins may be added.

その効果から、酸化防止剤にはフェノール系を、紫外線吸収剤にはベンゾフェノン系を、光安定剤にはヒンダードアミン系をそれぞれ組み合わせて用いるのが最適である。ただし、ヒンダードアミン系添加剤は一部のフェノール系添加剤と反応し、キノイド結合を生成するため、シートが色変化を起こすことがあるので注意は必要である。   In view of this effect, it is optimal to use a combination of a phenol type for the antioxidant, a benzophenone type for the ultraviolet absorber, and a hindered amine type for the light stabilizer. However, care should be taken because the hindered amine-based additive reacts with some phenol-based additives to form a quinoid bond, which may cause the sheet to change color.

適宜設ける絵柄模様層２としては、各種グラビアインキ、各種オフセットインキ、各種スクリーンインキ等の各種印刷用インキ類、各種コーティング材等、従来公知の任意の色材を用いることができる。またこの絵柄模様層２の形成方法としては、グラビア印刷法、オフセット印刷法、スクリーン印刷法等の各種印刷法、ロールコート法、ロッドコート法、ダイコート法、スプレーコート法、ディップコート法、ナイフコート法、エアーナイフコート法等の各種コーティング法、箔押し法、水圧転写法、熱転写法、昇華転写法等の各種転写法等、従来公知の任意の方法を適用することができる。   As the pattern layer 2 to be provided as appropriate, conventionally known arbitrary color materials such as various gravure inks, various offset inks, various printing inks such as various screen inks, various coating materials and the like can be used. The pattern layer 2 can be formed by various printing methods such as gravure printing method, offset printing method, screen printing method, roll coating method, rod coating method, die coating method, spray coating method, dip coating method, knife coating method. Conventionally known arbitrary methods such as various coating methods such as coating method, air knife coating method, foil pressing method, hydraulic transfer method, thermal transfer method, sublimation transfer method and the like can be applied.

適宜設ける透明樹脂層３としては、絵柄模様層２を保護するために必要に応じて設けることができ、絵柄を活かせるものであれば透明でも半透明でもよい。あるいは適宜艶消し模様やエンボス付与により表面凹凸を設けたものであっても良い。あるいはこの凹凸に着色剤を充填したものであってもよい。透明樹脂層３に用いる樹脂としてはポリオレフィン、ポリスチレン、ポリカーボネート、ポリエステル、ポリアミド、エチレン−酢酸ビニル共重合体、ポリビニルアルコール、アクリル等の合成樹脂、あるいはこれら合成樹脂の発泡体、エチレン−プロピレン共重合ゴム、エチレン−プロピレン−ジエン共重合ゴム、スチレン−ブタジエン共重合ゴム、スチレン−イソプレン−スチレンブロック共重合ゴム、スチレン−ブタジエン−スチレンブロック共重合ゴム、ポリウレタン等のゴムなどが挙げられるが、その中でも特に、ポリオレフィン系樹脂が好適に用いられる。具体的にはエチレン、プロピレン、ブテン、の単独重合あるいはこれら２種以上の共重合樹脂、もしくはそれらの混合樹脂からなるものが好ましい。またこれらの樹脂中には、必要に応じて、紫外線吸収剤、ラジカル捕捉剤、酸化防止剤、加工安定剤、などの各種添加剤を添加しても良い。   The transparent resin layer 3 provided as appropriate can be provided as necessary to protect the pattern layer 2 and may be transparent or translucent as long as the pattern can be utilized. Alternatively, surface irregularities may be provided by appropriately applying a matte pattern or embossing. Alternatively, the unevenness may be filled with a colorant. The resin used for the transparent resin layer 3 is polyolefin, polystyrene, polycarbonate, polyester, polyamide, ethylene-vinyl acetate copolymer, polyvinyl alcohol, acrylic, or other synthetic resin, or a foam of these synthetic resins, ethylene-propylene copolymer rubber. , Ethylene-propylene-diene copolymer rubber, styrene-butadiene copolymer rubber, styrene-isoprene-styrene block copolymer rubber, styrene-butadiene-styrene block copolymer rubber, rubbers such as polyurethane, etc. Polyolefin resins are preferably used. Specifically, a homopolymer of ethylene, propylene, butene, or a copolymer resin of two or more of these or a mixed resin thereof is preferable. Moreover, you may add various additives, such as a ultraviolet absorber, a radical scavenger, antioxidant, a process stabilizer, in these resins as needed.

本発明における最表面のコーティング樹脂によるコーティング層４には、真比重が２．５以下であり、かつ平均粒径が１μ以下である銀系無機添加剤又は亜鉛系無機添加剤を配合してなる。コーティング樹脂としては、即ち塗布液のバインダー樹脂としてエチレン−酢酸ビニル共重合体、ポリビニルブチラール、スチレン系樹脂、ポリエステルウレタン、アクリルウレタン、ポリアミド、ポリエステル樹脂、アクリル系樹脂等が使用できるが、基材シート１や絵柄模様層２や透明樹脂層３への密着性の点で優れるエチレン−酢酸ビニル共重合体、ポリエステルウレタン、アクリルウレタンが好ましく使用できる。   The coating layer 4 of the outermost coating resin in the present invention is blended with a silver-based inorganic additive or a zinc-based inorganic additive having a true specific gravity of 2.5 or less and an average particle size of 1 μm or less. . As the coating resin, that is, as the binder resin of the coating solution, ethylene-vinyl acetate copolymer, polyvinyl butyral, styrene resin, polyester urethane, acrylic urethane, polyamide, polyester resin, acrylic resin, etc. can be used. 1, ethylene-vinyl acetate copolymer, polyester urethane, and acrylic urethane, which are excellent in adhesion to the pattern 1, the pattern layer 2, and the transparent resin layer 3, can be preferably used.

本発明における銀系無機添加剤又は亜鉛系無機添加剤としては、無機化合物のゼオライト、アパタイト、ジルコニアなどの物質に銀イオン、銅イオン、亜鉛イオンのいずれかの金属イオンを取り込んで形成した抗菌性ゼオライト、抗菌性アパタイト、抗菌性ジルコニア等の無機系抗菌剤が使用できる、また有機抗菌剤、有機防カビ剤としてジンクピリジオン、２−（４−チアゾリル）−ベンゾイミダゾール、１０、１０−オキシビスフェノキサノジン、有機チツソイオウハロゲン系、ピリジン−２−チオール−オキシド等が使用できるが、抗菌効果の点で銀系抗菌剤が優れている。   As the silver-based inorganic additive or zinc-based inorganic additive in the present invention, an antibacterial property formed by incorporating a metal ion of silver ion, copper ion, or zinc ion into an inorganic compound such as zeolite, apatite, or zirconia. Inorganic antibacterial agents such as zeolite, antibacterial apatite, and antibacterial zirconia can be used, and zinc pyridione, 2- (4-thiazolyl) -benzimidazole, 10, 10-oxybis as organic antibacterial agents and organic fungicides Phenoxanodin, organic sulfur halogen, pyridine-2-thiol-oxide, etc. can be used, but silver antibacterial agents are excellent in terms of antibacterial effect.

基材シート１としてオレフィン素材からなる着色シート上に絵柄模様層２として木目印刷を施した後、透明樹脂層３としてオレフィン素材からなる透明シートを貼りあわせた後に、コーティング層４としてウレタン樹脂（ＤＩＣグラフィックス製Ｗ４８０）中に真比重が２．１で平均粒径が０．７５μのゼオライトに銀イオンを担持させたシナネンゼオミック株式会社の銀系無機添加剤（ＥＸ２０７０６Ｄ）を固形分比率で２０％配合し、これを厚み５μでコーティングし、化粧シートを得た。   After applying wood grain printing as a pattern layer 2 on a colored sheet made of an olefin material as the base sheet 1, a transparent sheet made of the olefin material is pasted as the transparent resin layer 3, and then a urethane resin (DIC) as the coating layer 4 A silver inorganic additive (EX20706D) manufactured by Sinanen Zeomic Co., Ltd., in which a silver ion is supported on a zeolite having a true specific gravity of 2.1 and an average particle diameter of 0.75 μ in W480 manufactured by Graphics, is 20% in terms of solid content. This was mixed and coated with a thickness of 5 μm to obtain a decorative sheet.

前記シナネンゼオミック株式会社の銀系無機添加剤（ＥＸ２０７０６Ｄ）の代わりに真比重が２．５で平均粒径が０．７５μのジルコニウムに亜鉛イオンを担持させた東亞合成株式会社の亜鉛系無機添加剤（ＥＸ２０７０６Ｆ）を用いた以外は実施例１と同様にして化粧シートを得た。   Zinc-based inorganic additive of Toagosei Co., Ltd., in which zinc ions are supported on zirconium having a true specific gravity of 2.5 and an average particle diameter of 0.75 μ instead of the silver-based inorganic additive (EX20706D) of Sinanen Zeomic Co., Ltd. A decorative sheet was obtained in the same manner as in Example 1 except that (EX20706F) was used.

＜比較例１＞
前記シナネンゼオミック株式会社の銀系無機添加剤（ＥＸ２０７０６Ｄ）の固形分比率を５％とした以外は実施例１と同様にして化粧シートを得た。 <Comparative Example 1>
A decorative sheet was obtained in the same manner as in Example 1 except that the solid content ratio of the silver-based inorganic additive (EX20706D) of Sinanen Zeomic Co., Ltd. was changed to 5%.

＜比較例２＞
前記シナネンゼオミック株式会社の銀系無機添加剤（ＥＸ２０７０６Ｄ）の固形分比率を３５％とした以外は実施例１と同様にして化粧シートを得た。 <Comparative Example 2>
A decorative sheet was obtained in the same manner as in Example 1 except that the solid content ratio of the silver-based inorganic additive (EX20706D) of Sinanen Zeomic Co., Ltd. was 35%.

＜比較例３＞
前記シナネンゼオミック株式会社の銀系無機添加剤（ＥＸ２０７０６Ｄ）の代わりに真比重が３で平均粒径が０．７５μのリン酸塩化合物に銀イオンを担持させた太平化学産業株式会社の銀系無機添加剤（ＥＸ２０７０６Ｂ）を用いた以外は実施例１と同様にして化粧シートを得た。 <Comparative Example 3>
Silver-based inorganic of Taihei Chemical Industrial Co., Ltd., in which silver ions are supported on a phosphate compound having a true specific gravity of 3 and an average particle size of 0.75 μ instead of the silver-based inorganic additive (EX20706D) of Sinanen Zeomic Co., Ltd. A decorative sheet was obtained in the same manner as in Example 1 except that the additive (EX20706B) was used.

＜比較例４＞
前記シナネンゼオミック株式会社の銀系無機添加剤（ＥＸ２０７０６Ｄ）の代わりに真比重が２．１で平均粒径が２．５μのゼオライトに銀イオンを担持させたシナネンゼオミック株式会社の銀系無機添加剤（ＥＸ２０７０６Ｇ）を用いた以外は実施例１と同様にして化粧シートを得た。 <Comparative Example 4>
A silver-based inorganic additive manufactured by Sinanen Zeomic Co., Ltd., in which silver ions are supported on zeolite having a true specific gravity of 2.1 and an average particle size of 2.5 μ instead of the silver-based inorganic additive (EX20706D) manufactured by Sinanen Zeomic Co., Ltd. A decorative sheet was obtained in the same manner as in Example 1 except that (EX20706G) was used.

＜性能評価＞
以上のようにして得た実施例１〜２、比較例１〜４の化粧シートに対し、以下の性能評価を行なった。 <Performance evaluation>
The following performance evaluation was performed with respect to the decorative sheets of Examples 1-2 and Comparative Examples 1-4 obtained as described above.

＜抗ウィルス性＞
作用時間は２４時間、試験ウィルスはＡ型インフルウエンザウィルス（Ｈ１Ｎ１型）、試験方法は抗菌試験方法（ＪＩＳ Ｚ ２８０１）に準拠した方法で試験を実施した。試験サンプル（サイズ５０ｍｍ×５０ｍｍ）を保湿シャーレに入れ、ウィルス液を０．１〜０．２ｍｌ滴下し、４０ｍｍ×４０ｍｍサイズのフィルム（ＰＥＴ）を乗せ、試験品とウィルスの接触効率を上げてから２４時間後、試験品からウィルスを回収し、抗菌活性値を測定した。 <Antiviral properties>
The action time was 24 hours, the test virus was A-type influenza virus (H1N1 type), and the test method was a method according to the antibacterial test method (JIS Z 2801). Put the test sample (size 50 mm x 50 mm) in a moisturizing petri dish, drop 0.1 to 0.2 ml of the virus solution, place a 40 mm x 40 mm size film (PET), and increase the contact efficiency between the test product and the virus. After 24 hours, the virus was collected from the test article and the antibacterial activity value was measured.

＜耐候性＞
ＪＩＳ−Ｋ−５６００に準じた試験を行い、１０００Ｈｒでの変化を目視で評価した。
以上の結果を表１に示す。 <Weather resistance>
A test according to JIS-K-5600 was conducted, and the change at 1000 Hr was visually evaluated.
The results are shown in Table 1.

本発明の抗ウィルス性を有する内装用化粧シートは、抗ウィルス性が必要とされるドア、窓枠、家具といった日常接触する機会の多い内装箇所に使用可能である。   The interior decorative sheet having antiviral properties of the present invention can be used in interior parts where there are many opportunities for daily contact, such as doors, window frames, and furniture that require antiviral properties.

１…基材シート
２…絵柄模様層
３…透明樹脂層
４…コーティング層 DESCRIPTION OF SYMBOLS 1 ... Base material sheet 2 ... Pattern pattern layer 3 ... Transparent resin layer 4 ... Coating layer

Claims (2)

化粧シート最表面のコーティング樹脂中に銀系無機添加剤又は亜鉛系無機添加剤を配合した抗ウィルス性を有する内装用化粧シートにおいて、前記銀系無機添加剤又は亜鉛系無機添加剤の真比重が２．５以下であり、かつ平均粒径が１μ以下であり、かつ前記化粧シート最表面のコーティング樹脂に対して固形分比率で１０〜３０％配合してなることを特徴とする抗ウィルス性を有する内装用化粧シート。   In an interior decorative sheet having antiviral properties, in which a silver-based inorganic additive or a zinc-based inorganic additive is blended in a coating resin on the outermost surface of the decorative sheet, the true specific gravity of the silver-based inorganic additive or the zinc-based inorganic additive is Antiviral properties characterized by being 2.5 or less and having an average particle size of 1 μm or less and being blended in an amount of 10 to 30% in solid content with respect to the coating resin on the outermost surface of the decorative sheet A decorative sheet for interior use. 前記銀系無機添加剤又は亜鉛系無機添加剤は、結晶構造中に銀イオン又は亜鉛イオンを担持させた構造であることを特徴とする請求項１に記載の抗ウィルス性を有する内装用化粧シート。   2. The decorative sheet for interior decoration according to claim 1, wherein the silver-based inorganic additive or the zinc-based inorganic additive has a structure in which silver ions or zinc ions are supported in a crystal structure. .
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