JP4898506B2 - Decorative body - Google Patents

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JP4898506B2
JP4898506B2 JP2007071804A JP2007071804A JP4898506B2 JP 4898506 B2 JP4898506 B2 JP 4898506B2 JP 2007071804 A JP2007071804 A JP 2007071804A JP 2007071804 A JP2007071804 A JP 2007071804A JP 4898506 B2 JP4898506 B2 JP 4898506B2
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light
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multilayer film
dielectric multilayer
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JP2008229997A (en
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合 幸 洋 河
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河合光学株式会社
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本発明は、基材となる置物などの物品表面に誘電体多層膜を形成し、誘電体多層膜による可視光線の干渉作用により生じた反射光を利用して装飾効果を高めることができる装飾体に関する。   The present invention relates to a decorative body in which a dielectric multilayer film is formed on the surface of an article such as a figurine serving as a base material, and the decorative effect can be enhanced by using reflected light generated by the interference action of visible light by the dielectric multilayer film. About.

物品の表面を装飾した装飾体として、例えば、置物などの物品の表面に誘電体多層膜を形成し、この誘電体多層膜による可視光線の干渉作用で生じた反射光を利用し、所定の波長の可視光線を強調することで装飾効果を高めるものが考えられた。   As a decorative object that decorates the surface of an article, for example, a dielectric multilayer film is formed on the surface of an article such as a figurine, and the reflected light generated by the visible light interference action by this dielectric multilayer film is used to obtain a predetermined wavelength. It was possible to enhance the decorative effect by enhancing the visible light.

しかしながら、このような装飾体にあっては、基材となる物品と誘電体多層膜との界面で反射する反射光の強度が強いと、干渉作用で生じた反射光（所定の波長の可視光線）の強度が相対的に弱くなって見え難くなるため、十分な装飾効果が得られないという問題点があり、実用化に至っていなかった。   However, in such a decorative body, if the intensity of the reflected light reflected at the interface between the article as the base material and the dielectric multilayer film is strong, the reflected light generated by the interference action (visible light having a predetermined wavelength) ) Is relatively weak and difficult to see, and there is a problem that a sufficient decoration effect cannot be obtained, and it has not been put into practical use.

本発明は、上述した問題点を解決するためになされたものである。   The present invention has been made to solve the above-described problems.

請求項１に係る発明は、基材と、この基材上に設けられ、可視光線を吸収する光吸収層と、前記基材上にあって前記光吸収層に並設され、光散乱性を有する光散乱層と、この光散乱層および前記光吸収層を覆うように設けられた誘電体多層膜とを備えている装飾体である。   The invention according to claim 1 is provided with a base material, a light absorbing layer that is provided on the base material and absorbs visible light, and is provided side by side with the light absorbing layer on the base material. And a dielectric multilayer film provided to cover the light scattering layer and the light absorption layer.

請求項２に係る発明は、基材と、この基材上に設けられ、光散乱性を有する光散乱層と、この光散乱層上に設けられ、可視光線を吸収する光吸収層と、この光吸収層および前記光散乱層を覆うように設けられた誘電体多層膜とを備えている装飾体である。   The invention according to claim 2 is a substrate, a light scattering layer provided on the substrate and having light scattering properties, a light absorption layer provided on the light scattering layer and absorbing visible light, The decorative body includes a light absorption layer and a dielectric multilayer film provided so as to cover the light scattering layer.

請求項１に記載の装飾体によれば、可視光線を吸収する光吸収層を基材上に設けたため、この光吸収層の部位にあっては、誘電体多層膜により所定の波長の可視光線を強めて反射させつつ、誘電体多層膜を透過した所定の波長と異なる可視光線を光吸収層に吸収させることができ、所定の波長の可視光線の反射光を相対的に強くすることができると共に、光散乱性を有する光散乱層を基材上にあって光吸収層に並設したため、この光散乱層の部位にあっては、誘電体多層膜を透過した所定の波長と異なる可視光線を、光散乱層により散乱光（所定の波長の可視光線と補色関係にある可視光線）として散乱させることができ、光吸収層の部位の所定の波長の可視光線と、光散乱層の部位の散乱光とのコントラストにより装飾効果を高めることができる。   According to the decorative body according to claim 1, since the light absorbing layer that absorbs visible light is provided on the base material, visible light having a predetermined wavelength is provided at the portion of the light absorbing layer by the dielectric multilayer film. The visible light having a wavelength different from the predetermined wavelength transmitted through the dielectric multilayer film can be absorbed by the light absorption layer, and the reflected light of the visible light having the predetermined wavelength can be made relatively strong. In addition, since a light scattering layer having light scattering properties is provided on the substrate and arranged in parallel with the light absorption layer, visible light different from a predetermined wavelength transmitted through the dielectric multilayer film is present at the light scattering layer. Can be scattered as scattered light (visible light having a complementary color relationship with visible light having a predetermined wavelength) by the light scattering layer, visible light having a predetermined wavelength in the portion of the light absorbing layer, and To enhance the decoration effect by contrast with scattered light Kill.

請求項２に記載の装飾体によれば、可視光線を吸収する光吸収層を設けたため、この光吸収層の部位にあっては、誘電体多層膜により所定の波長の可視光線を強めて反射させつつ、誘電体多層膜を透過した所定の波長と異なる可視光線を光吸収層に吸収させることができ、所定の波長の可視光線の反射光を相対的に強くすることができると共に、光散乱性を有する光散乱層を基材上に設けたため、光吸収層を設けていない光散乱層の部位にあっては、誘電体多層膜を透過した所定の波長と異なる可視光線を、光散乱層により散乱光（所定の波長の可視光線と補色関係にある可視光線）として散乱させることができ、光吸収層の部位の所定の波長の可視光線と、光吸収層を設けていない光散乱層の部位の散乱光とのコントラストにより装飾効果を高めることができる。   According to the decorative body described in claim 2, since the light absorbing layer that absorbs visible light is provided, the visible light having a predetermined wavelength is strengthened and reflected by the dielectric multilayer film at the portion of the light absorbing layer. In addition, visible light different from the predetermined wavelength transmitted through the dielectric multilayer film can be absorbed by the light absorption layer, and the reflected light of the visible light of the predetermined wavelength can be made relatively strong and light scattering Since the light scattering layer having the property is provided on the substrate, visible light different from the predetermined wavelength transmitted through the dielectric multilayer film is applied to the light scattering layer in the portion of the light scattering layer where the light absorption layer is not provided. Can be scattered as scattered light (visible light having a complementary color relationship with visible light having a predetermined wavelength), and visible light having a predetermined wavelength in a portion of the light absorbing layer and a light scattering layer without a light absorbing layer. Decoration effect by contrast with scattered light It is possible to increase.

本発明の一実施の形態を、図１〜３に基づき説明する。図１において、Ａは装飾体であり、装飾体Ａは、概略的に、基材１と、この基材１上に設けられ、可視光線を吸収する光吸収層２と、基材１上にあって光吸収層２に並設され、光散乱性を有する光散乱層３と、この光散乱層３および光吸収層２を覆うように設けられた誘電体多層膜４とにより構成されている。   An embodiment of the present invention will be described with reference to FIGS. In FIG. 1, A is a decorative body, and the decorative body A is schematically provided on a base material 1, a light absorbing layer 2 that is provided on the base material 1 and absorbs visible light, and a base material 1. The light scattering layer 3 is provided in parallel with the light absorption layer 2 and has a light scattering property, and the dielectric multilayer film 4 is provided so as to cover the light scattering layer 3 and the light absorption layer 2. .

基材１は、光吸収層２および光散乱層３の下地となるもので、例えば、陶磁器製、ガラス製、金属製等の花器、食器、置物、アクセサリー、看板などの物品により構成される。   The base material 1 is a base for the light absorption layer 2 and the light scattering layer 3, and is composed of articles such as ceramics, glass, metal and other flower vases, tableware, figurines, accessories, signs, and the like.

光吸収層２は、可視光線を吸収するものであり、例えば、酸化チタン（ＴｉＯ）や炭素（Ｃ）などの微粉末により形成されている。この光吸収層２は、これらの微粉末をバインダーと共に有機溶剤に混合して作製した懸濁液を、スクリーン印刷法、スプレー法などの公知の被着方法により基材１上に被着し、乾燥して形成される。   The light absorption layer 2 absorbs visible light, and is formed of, for example, fine powder such as titanium oxide (TiO) or carbon (C). The light absorbing layer 2 is prepared by adhering a suspension prepared by mixing these fine powders in an organic solvent together with a binder onto a substrate 1 by a known application method such as a screen printing method or a spray method. It is formed by drying.

光散乱層３は、入射した可視光線を該光散乱層３の内部に取り込んで散乱させ、散乱光として再び可視光線を放射するものであり、アクリル系樹脂やポリスチレン系樹脂などの透明樹脂中に二酸化珪素（ＳｉＯ2）やアルミナ（Ａｌ2Ｏ3）などの粒子を分散させたり、透明なガラス（主成分：ＳｉＯ2）中に二酸化チタン（ＴｉＯ2）やジルコニア（ＺｒＯ2）などの粒子を分散させたりして形成されている。この光散乱層３は、透明樹脂を用いる場合にあっては、透明樹脂および透明粒子を有機溶剤に混合して作製した懸濁液を、スクリーン印刷法、スプレー法などの公知の被着方法により基材１上に被着し、乾燥して形成される。また、ガラスを用いる場合にあっては、例えばガラス粉末（主成分：ＳｉＯ2）に前述の二酸化チタン（ＴｉＯ2）やジルコニア（ＺｒＯ2）などの粒子を混合し、更に、これを有機溶剤およびバインダーと混合して同様に基材１上に被着し、ガラス転移点以上の温度で焼成して形成される。 The light scattering layer 3 takes incident visible light into the light scattering layer 3 and scatters it, and emits visible light again as scattered light. In the transparent resin such as acrylic resin or polystyrene resin, Disperse particles such as silicon dioxide (SiO 2 ) and alumina (Al 2 O 3 ), or disperse particles such as titanium dioxide (TiO 2 ) and zirconia (ZrO 2 ) in transparent glass (main component: SiO 2 ). It is formed by dispersing. In the case of using a transparent resin, the light scattering layer 3 is prepared by mixing a suspension prepared by mixing a transparent resin and transparent particles with an organic solvent by a known deposition method such as a screen printing method or a spray method. It is deposited on the substrate 1 and dried. In the case of using glass, for example, particles such as titanium dioxide (TiO 2 ) and zirconia (ZrO 2 ) described above are mixed with glass powder (main component: SiO 2 ), and this is further mixed with an organic solvent and It is formed by being mixed with a binder and similarly deposited on the substrate 1 and firing at a temperature equal to or higher than the glass transition point.

なお、前述の光吸収層２および光散乱層３の形成に用いられる有機溶剤、バインダーは公知のものでよく、また、混合される粒子の分散性を高めるため、分散剤を添加してもよい。   In addition, the organic solvent and binder used for formation of the above-mentioned light absorption layer 2 and the light-scattering layer 3 may be a well-known thing, and in order to improve the dispersibility of the particle mixed, you may add a dispersing agent. .

ところで、基材１上に形成された光吸収層２の上面２ａおよび光散乱層３の上面３ａは、平坦な面とするのが好ましい。この上面２ａ、３ａを平坦にすることで、該上面２ａ、３ａに形成される誘電体多層膜４の表面を平坦にすることができ、誘電体多層膜４へ入射した可視光線が乱反射するのを防止することができるからである。   By the way, it is preferable that the upper surface 2a of the light absorption layer 2 formed on the base material 1 and the upper surface 3a of the light scattering layer 3 are flat surfaces. By flattening the upper surfaces 2a and 3a, the surface of the dielectric multilayer film 4 formed on the upper surfaces 2a and 3a can be flattened, and visible light incident on the dielectric multilayer film 4 is irregularly reflected. It is because it can prevent.

誘電体多層膜４は、入射光のうち所定の波長の可視光線を強めて反射するものであり、屈折率の異なる薄膜が交互に積層され、例えば、図２に示したように、屈折率の低い低屈折率薄膜４ａと、この低屈折率薄膜４ａよりも屈折率の高い高屈折率薄膜４ｂが交互に積層されている。低屈折率薄膜４ａには、二酸化珪素（ＳｉＯ2）、フッ化マグネシウム（ＭｇＦ2）などが、高屈折率薄膜４ｂには、二酸化チタン（ＴｉＯ2）、五酸化タンタル（Ｔａ2Ｏ5）、五酸化ニオブ（Ｎｂ2Ｏ5）などが用いられる。これらの薄膜は、真空蒸着法やスパッタリング蒸着法等の公知技術を用いて光学的膜厚Ｌが（２ｎ−１）×λ／４（λは所定の波長、ｎは自然数）となるように形成されている。なお、図２に図示した装飾体Ａにあっては、光吸収層２および光散乱層３上に低屈折率薄膜４ａを設け、この低屈折率薄膜４ａ上に高屈折率薄膜４ｂと低屈折率薄膜４ａとを交互に積層する構成としたが、光吸収層２および光散乱層３上に高屈折率薄膜４ｂを設け、この高屈折率薄膜４ｂ上に低屈折率薄膜４ａと高屈折率薄膜４ｂとを交互に積層する構成であっても構わない。 The dielectric multilayer film 4 intensifies and reflects visible light having a predetermined wavelength of incident light, and thin films having different refractive indexes are alternately laminated. For example, as shown in FIG. Low low-refractive-index thin films 4a and high-refractive-index thin films 4b having a higher refractive index than the low-refractive index thin films 4a are alternately stacked. The low refractive index thin film 4a includes silicon dioxide (SiO 2 ), magnesium fluoride (MgF 2 ), and the like. The high refractive index thin film 4b includes titanium dioxide (TiO 2 ), tantalum pentoxide (Ta 2 O 5 ), Niobium pentoxide (Nb 2 O 5 ) or the like is used. These thin films are formed using a known technique such as a vacuum vapor deposition method or a sputtering vapor deposition method so that the optical film thickness L is (2n-1) × λ / 4 (λ is a predetermined wavelength and n is a natural number). Has been. In the decorative body A shown in FIG. 2, the low refractive index thin film 4a is provided on the light absorbing layer 2 and the light scattering layer 3, and the high refractive index thin film 4b and the low refractive index are provided on the low refractive index thin film 4a. The refractive index thin film 4a is alternately laminated. The high refractive index thin film 4b is provided on the light absorption layer 2 and the light scattering layer 3, and the low refractive index thin film 4a and the high refractive index are provided on the high refractive index thin film 4b. The thin film 4b may be alternately stacked.

次に、装飾体Ａの作用について説明する。この説明では、可視光線α（例えば太陽光などの白色光）を入射角０度で該装飾体Ａに照射し、入射した方向から装飾体Ａを見た場合について例示する。可視光線αが装飾体Ａに照射されると、図２に示したように、基材１上に光吸収層２が設けられている領域（以下、「領域Ｘ」という。）においては、誘電体多層膜４を構成する低屈折率薄膜４ａおよび高屈折率薄膜４ｂの干渉作用により、可視光線αのうち光学的膜厚Ｌに対応した所定の波長λの可視光線α１が反射する。一方、所定の波長λ以外の波長の可視光線α２（可視光線α１と補色関係にある可視光線）は、誘電体多層膜４を透過して光吸収層２に達し、この光吸収層２に吸収される。したがって、領域Ｘにおいては、可視光線α２が吸収されるため、所定の波長λの可視光線α１の反射が可視光線α２に対して相対的に強くなり、可視光線α１が強調されて視認される。   Next, the operation of the decorative body A will be described. In this description, a case where the decorative body A is irradiated with visible light α (for example, white light such as sunlight) at an incident angle of 0 degree and the decorative body A is viewed from the incident direction is illustrated. When the decorative body A is irradiated with the visible light α, as shown in FIG. 2, in the region where the light absorption layer 2 is provided on the base material 1 (hereinafter referred to as “region X”), the dielectric is formed. Due to the interference action of the low-refractive index thin film 4a and the high-refractive index thin film 4b constituting the body multilayer film 4, the visible light α1 having a predetermined wavelength λ corresponding to the optical film thickness L is reflected among the visible light α. On the other hand, visible light α2 having a wavelength other than the predetermined wavelength λ (visible light having a complementary color relationship with visible light α1) passes through the dielectric multilayer film 4 and reaches the light absorption layer 2, and is absorbed by the light absorption layer 2. Is done. Therefore, in the region X, since the visible light α2 is absorbed, the reflection of the visible light α1 having a predetermined wavelength λ becomes relatively stronger than the visible light α2, and the visible light α1 is emphasized and visually recognized.

また、基材１上に光散乱層３が設けられている領域（以下、「領域Ｙ」という。）においても、領域Ｘと同様に、誘電体多層膜４により可視光線αのうち光学的膜厚Ｌに対応した所定の波長λの可視光線α１が反射する。しかしながら、領域Ｙにあっては光散乱層３が設けられているため、誘電体多層膜４を透過した可視光線α２は、光散乱層３内で散乱して再び誘電体多層膜４を介して装飾体Ａの表面から放射される。このとき散乱した可視光線α２は指向性が小さいため、正反射（入射角と反射角とが等しい反射）をした指向性が高い可視光線α１に比べ視認し易くなる。   Also in the region where the light scattering layer 3 is provided on the substrate 1 (hereinafter referred to as “region Y”), as in the region X, the dielectric multilayer film 4 causes an optical film out of the visible light α. Visible light α1 having a predetermined wavelength λ corresponding to the thickness L is reflected. However, since the light scattering layer 3 is provided in the region Y, the visible light α2 transmitted through the dielectric multilayer film 4 is scattered in the light scattering layer 3 and again passes through the dielectric multilayer film 4. Radiated from the surface of the decorative body A. At this time, the scattered visible light α2 has a small directivity, and therefore, it is easier to visually recognize the visible light α1 having high directivity (reflection having the same incident angle and reflection angle).

したがって、領域Ｙでは可視光線α２が目立って見えると共に、この可視光線α２は領域Ｘの可視光線α１とは互いに補色関係にあるため、色彩的には一番コントラストの強い組み合わせとなり、領域Ｙの可視光線α２により領域Ｘの可視光線α１を際立たせることができ、装飾効果を高めることができる。   Accordingly, the visible light α2 is conspicuous in the region Y, and the visible light α2 is complementary to the visible light α1 in the region X. Therefore, the combination has the strongest contrast in terms of color, and the visible light in the region Y is visible. The visible light α1 in the region X can be emphasized by the light α2, and the decoration effect can be enhanced.

なお、この性質を利用し、装飾体Ａの基材１上における光吸収層２の輪郭を文字や絵柄などの表示物の形状となるように形成してもよい。たとえば、文字や絵柄の部位に光吸収層２を設けて領域Ｘのように形成し、この文字や絵柄の周囲に光散乱層３を設けて領域Ｙのように形成することにより、該文字や絵柄を際立たせて表示させることができ、広告表示をする看板などとして活用することもできる。   In addition, you may form using this property so that the outline of the light absorption layer 2 on the base material 1 of the decorative body A may be the shape of a display object such as a character or a picture. For example, a light absorbing layer 2 is provided in a region of a character or a pattern to form a region X, and a light scattering layer 3 is formed around the character or a pattern to form a region Y, thereby The design can be displayed in a prominent manner, and can be used as a billboard for displaying advertisements.

ところで、上述した本発明の作用の説明では、可視光線αの入射角を０度とし、入射方向から装飾体Ａを観察した場合について示したが、可視光線αの入射角を変えたり、装飾体Ａを観察する角度を変えたりしても、同様に、並設された領域Ｘおよび領域Ｙの可視光線が互いに補色関係になるため、これらの可視光線のコントラストにより装飾体Ａの装飾効果を高めることができる。   By the way, in the above description of the operation of the present invention, the case where the incident angle of the visible ray α is set to 0 degree and the decorative body A is observed from the incident direction has been described. Even if the angle at which A is observed is changed, the visible rays in the region X and the region Y that are arranged side by side are complementary to each other. Therefore, the decoration effect of the decorative body A is enhanced by the contrast of these visible rays. be able to.

また、上述した実施の形態では基材１上において光吸収層２と光散乱層３とを並設した例について示したが、図３に示したように、基材１上に光散乱性を有する光散乱層３を設け、この光散乱層３上の一部に可視光線を吸収する光吸収層２を設け、この光吸収層２および光散乱層３を覆うように誘電体多層膜４を設ける構成としてもよい。かかる構成においても上述した実施の形態と同様な装飾効果を得ることができる。   In the above-described embodiment, an example in which the light absorption layer 2 and the light scattering layer 3 are arranged side by side on the base material 1 has been shown. However, as shown in FIG. A light-absorbing layer 2 that absorbs visible light is provided on a part of the light-scattering layer 3, and a dielectric multilayer film 4 is formed so as to cover the light-absorbing layer 2 and the light-scattering layer 3. It is good also as a structure to provide. Even in such a configuration, a decorative effect similar to that of the above-described embodiment can be obtained.

［実施例１］
次に、本発明の実施例１について示す。本実施例にあっては、基材１として陶器製の花瓶を用い、この花瓶に以下に示した光吸収層２、光散乱層３、誘電体多層膜４を、図３に図示した構成のように設けて装飾体Ａを作製した。
光吸収層：材質：炭素粒子（Ｃ）、厚さ：１００μｍ、形成方法：塗布
光散乱層：材質：ガラスに二酸化チタン（ＴｉＯ2）を分散、厚さ：３００μｍ、
形成方法：塗布
誘電体多層膜 低屈折率薄膜：材質：二酸化珪素（ＳｉＯ2）、厚さ：０．１５μｍ
高屈折率薄膜：材質：二酸化チタン（ＴｉＯ2）、厚さ：０．１５μｍ
積層数：１０層
形成方法：真空蒸着法 [Example 1]
Next, Example 1 of the present invention will be described. In this embodiment, a ceramic vase is used as the base material 1, and the light absorption layer 2, the light scattering layer 3, and the dielectric multilayer film 4 shown below in the vase have the configuration shown in FIG. Thus, a decorative body A was produced.
Light absorbing layer: material: carbon particles (C), thickness: 100 μm, forming method: coating, light scattering layer: material: titanium dioxide (TiO 2 ) dispersed in glass, thickness: 300 μm,
Forming method: Application
Dielectric multilayer film Low refractive index thin film: Material: Silicon dioxide (SiO 2 ), Thickness: 0.15 μm
High refractive index thin film: material: titanium dioxide (TiO 2 ), thickness: 0.15 μm
Number of layers: 10 layers
Forming method: Vacuum deposition method

上述した実施例１では、領域Ｘにおいて赤色の可視光線α１（入射角０度）の反射光が得られ、領域Ｙにおいてシアン色（赤色の補色）の可視光線α２の散乱光が得られ、可視光線α１と可視光線α２とのコントラストにより鮮やかで装飾効果の高い装飾体Ａを得ることができた。   In Example 1 described above, reflected light of red visible light α1 (incidence angle 0 degree) is obtained in region X, and scattered light of visible light α2 of cyan (complementary color of red) is obtained in region Y. Due to the contrast between the light ray α1 and the visible light α2, it was possible to obtain a decorative body A having a bright and high decorative effect.

本発明に係る装飾体の断面図である。It is sectional drawing of the decoration body which concerns on this invention. 図１のＢ部を拡大した断面図であり、作用を説明するための図である。It is sectional drawing which expanded the B section of FIG. 1, and is a figure for demonstrating an effect | action. 図１の変形例を示した断面図である。It is sectional drawing which showed the modification of FIG.

符号の説明Explanation of symbols

Ａ 装飾体
１ 基材
２ 光吸収層
３ 光散乱層
４ 誘電体多層膜 A decorative body 1 base material 2 light absorption layer 3 light scattering layer 4 dielectric multilayer film

Claims (2)

基材と、この基材上に設けられ、可視光線を吸収する光吸収層と、前記基材上にあって前記光吸収層に並設され、光散乱性を有する光散乱層と、この光散乱層および前記光吸収層を覆うように設けられた誘電体多層膜とを備えていることを特徴とする装飾体。   A base material, a light absorbing layer that is provided on the base material and absorbs visible light, a light scattering layer that is provided on the base material in parallel with the light absorbing layer and has a light scattering property, and the light. A decorative body comprising a scattering layer and a dielectric multilayer film provided so as to cover the light absorption layer. 基材と、この基材上に設けられ、光散乱性を有する光散乱層と、この光散乱層上に設けられ、可視光線を吸収する光吸収層と、この光吸収層および前記光散乱層を覆うように設けられた誘電体多層膜とを備えていることを特徴とする装飾体。   A base material, a light scattering layer provided on the base material and having light scattering properties, a light absorption layer provided on the light scattering layer and absorbing visible light, and the light absorption layer and the light scattering layer And a dielectric multilayer film provided to cover the decorative body.
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JP6764240B2 (en) 2016-03-24 2020-09-30 セーレン株式会社 Decorative sheets, decorative molded products, and decorative modules
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JP7048022B2 (en) 2018-06-15 2022-04-05 エルジー・ケム・リミテッド Decorative material
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