JP2012126072A - Decorative sheet, and method for producing the same - Google Patents

Decorative sheet, and method for producing the same Download PDF

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JP2012126072A
JP2012126072A JP2010281445A JP2010281445A JP2012126072A JP 2012126072 A JP2012126072 A JP 2012126072A JP 2010281445 A JP2010281445 A JP 2010281445A JP 2010281445 A JP2010281445 A JP 2010281445A JP 2012126072 A JP2012126072 A JP 2012126072A
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resin
decorative sheet
concavo
transparent
convex pattern
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Yoshinori Yamaguchi
美則 山口
Yorinobu Yamazaki
順伸 山崎
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Goyo Paper Working Co Ltd
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Goyo Paper Working Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a decorative sheet in which patterns in any part of a sheet having convexo-concave patterns are made to disappear or half disappear to become transparent or half transparent, and a method for producing the same.SOLUTION: The decorative sheet is made by forming convexo-concave patterns on all of a front face side and/or a back face side of a sheet composed of a transparent or half transparent resin (A), and laminating or coating a transparent or half transparent resin (B) on a part of the convexo-concave patterns to make the convexo-concave patterns disappear or half disappear.

Description

本発明は、電気・電子機器等の各種製品の表面に貼着して装飾性を付与するための装飾性シート及びその製造方法に係り、詳しくは、凹凸模様が形成されたシートの任意の部分の模様を消失又は半消失させ、製品の表面に表示された文字や記号等を装飾性シートの上から読み取れるようにすることが出来る装飾性シート及びその製造方法に関する。   The present invention relates to a decorative sheet for imparting decorative properties by sticking to the surface of various products such as electric and electronic devices, and a method for manufacturing the decorative sheet, and more specifically, an arbitrary portion of a sheet on which an uneven pattern is formed. The present invention relates to a decorative sheet and a method for manufacturing the same, which can eliminate or semi-disappear the pattern so that characters, symbols, and the like displayed on the surface of the product can be read from the decorative sheet.

従来より、電気・電子機器等の製品の表面にはさまざまな装飾が施されているが、例えば、表面に微細な凹凸模様が刻まれた樹脂シートからなる装飾性シートを、製品表面に張付けることが行われている。この方法によれば、電気・電子機器などを湿気、埃や傷から保護するとともに、デザイン性を拡張し、商品価値を高めることができる(特許文献1参照)。   Conventionally, various decorations have been applied to the surface of products such as electrical and electronic equipment. For example, a decorative sheet made of a resin sheet with a fine concavo-convex pattern on the surface is applied to the product surface. Things have been done. According to this method, it is possible to protect electrical / electronic devices and the like from moisture, dust, and scratches, expand design, and increase commercial value (see Patent Document 1).

一方、装置の操作盤など、インジケーターや覗き窓等を含む製品の場合は、インジケーターや覗き窓の上に装飾性シートを設けると、表示内容を読み取ったり、内部の状況を見ることが困難となる。そこで、このような場合は、装飾が不要な部分だけ切り抜いたり、当該装飾性シートの模様を部分的に消失させ透明にする必要が生じる。   On the other hand, in the case of a product that includes an indicator, a viewing window, etc., such as an operation panel of the device, if a decorative sheet is provided on the indicator or the viewing window, it will be difficult to read the display contents or see the internal situation. . Therefore, in such a case, it is necessary to cut out only a portion that does not require decoration, or to partially erase the pattern of the decorative sheet and make it transparent.

しかしながら、装飾の不要な部分を切り抜けば、その切り抜き部分から湿気や埃等が侵入し、電子機器等が故障する原因となる恐れがある。また、所定の部分だけ模様がない装飾性シートを作るには別途の原版が必要になるが、透明にするべき部分はそれぞれの製品ごとに場所が異なるので、1種の製品に対し1つの原版が必要になり、コストアップの原因となる。   However, if a portion that does not require decoration is cut out, moisture, dust, or the like may enter from the cutout portion, which may cause a failure of the electronic device or the like. In addition, a separate original plate is required to make a decorative sheet having no pattern only on a predetermined part, but the part to be transparent differs in each product, so one original plate for one type of product. Is necessary, which causes an increase in cost.

特許第4543046号公報Japanese Patent No. 4543046

本発明はかかる実情に鑑み、上記の従来技術の問題点を解消し、任意の部分の模様を消失又は半消失させ、文字や記号等の表示内容を読み取り易くすることの可能な装飾性シートと、その製造方法を提供することを目的とする。   In view of such a situation, the present invention is a decorative sheet that can solve the above-described problems of the prior art, make a pattern of an arbitrary portion disappear or semi-disappear, and make it easy to read display contents such as characters and symbols. An object of the present invention is to provide a manufacturing method thereof.

本発明は上記目的を達成するためになされたもので、本発明の特徴は、透明又は半透明樹脂(A)からなるシートの表面側及び/又は裏面側に凹凸模様が形成され、該凹凸模様の一部に透明又は半透明樹脂(B)が積層又は塗布され、前記凹凸模様を消失又は半消失させた装飾性シートである。   The present invention has been made to achieve the above object, and the feature of the present invention is that a concavo-convex pattern is formed on the front side and / or the back side of a sheet made of a transparent or translucent resin (A). A transparent or translucent resin (B) is laminated or applied to a part of the decorative sheet, and the concavo-convex pattern has disappeared or semi-disappeared.

本発明の他の特徴は、前記樹脂(A)が、熱可塑性樹脂、熱硬化型樹脂、紫外線硬化型樹脂、電子線硬化型樹脂のいずれかである装飾性シートである。   Another feature of the present invention is a decorative sheet in which the resin (A) is any one of a thermoplastic resin, a thermosetting resin, an ultraviolet curable resin, and an electron beam curable resin.

本発明の他の特徴は、前記樹脂(B)が、熱可塑性樹脂、熱硬化型樹脂、紫外線硬化型樹脂、電子線硬化型樹脂のいずれかである装飾性シートである。   Another feature of the present invention is a decorative sheet in which the resin (B) is any one of a thermoplastic resin, a thermosetting resin, an ultraviolet curable resin, and an electron beam curable resin.

本発明の他の特徴は、前記樹脂(A)の屈折率と前記樹脂(B)の屈折率との差が0.2以下である装飾性シートである。   Another feature of the present invention is a decorative sheet in which the difference between the refractive index of the resin (A) and the refractive index of the resin (B) is 0.2 or less.

本発明の他の特徴は、前記樹脂(B)の厚みが、前記樹脂(A)からなるシートの凹凸模様が形成された面のRzの少なくとも0.5倍である装飾性シートである。   Another feature of the present invention is a decorative sheet in which the thickness of the resin (B) is at least 0.5 times Rz of the surface on which the concavo-convex pattern of the sheet made of the resin (A) is formed.

本発明の他の特徴は、前記樹脂(A)からなるシートの片側に透明又は半透明樹脂(C)からなる基材シートが積層されている装飾性シートである。   Another feature of the present invention is a decorative sheet in which a base sheet made of a transparent or translucent resin (C) is laminated on one side of the sheet made of the resin (A).

本発明の他の特徴は、前記樹脂(C)がポリエステル樹脂である装飾性シートである。   Another feature of the present invention is a decorative sheet in which the resin (C) is a polyester resin.

本発明の他の特徴は、表面側又は裏面側の凹凸模様が設けられたシートの任意の位置に、前記凹凸模様の上から透明又は半透明樹脂(B)を塗布し、その後、該樹脂(B)を冷却固化又は硬化させることにより、前記樹脂(B)を塗布した部分の凹凸模様を消失又は半消失させることを特徴とする装飾性シートの製造方法である。   Another feature of the present invention is that a transparent or translucent resin (B) is applied from above the concavo-convex pattern to an arbitrary position of the sheet provided with the concavo-convex pattern on the front side or the back side, and then the resin ( It is a method for producing a decorative sheet, characterized in that the concavo-convex pattern of the portion coated with the resin (B) is lost or semi-disappeared by cooling and solidifying or curing B).

本発明の装飾性シートによれば、透明又は半透明樹脂(A)(以下、単に樹脂(A)と称する)からなり、凹凸模様が形成されたシートの任意の位置に、透明又は半透明樹脂(B)(以下、単に樹脂(B)と称する)を積層又は塗布するだけで、当該部分の凹凸模様を消失又は半消失させることができ、即ち、当該部分は透明又は半透明となるので、文字や記号を読み取ったり、内部を見ることができる。
尚、半透明とは半透明樹脂でいう半透明と同様の意味で用いられ、透明の程度の小さいことを意味する。
According to the decorative sheet of the present invention, the transparent or translucent resin (A) (hereinafter simply referred to as the resin (A)) is formed, and the transparent or translucent resin is disposed at any position on the sheet on which the concavo-convex pattern is formed. By simply laminating or applying (B) (hereinafter simply referred to as resin (B)), the uneven pattern of the part can be eliminated or semi-disappeared, that is, the part becomes transparent or translucent, You can read letters and symbols and look inside.
The term “translucent” is used in the same meaning as translucent in the case of a translucent resin, and means that the degree of transparency is small.

樹脂(A)を熱可塑性樹脂、熱硬化型樹脂、紫外線硬化型樹脂、電子線硬化型樹脂のいずれかとすることにより、微細な凹凸模様でも簡単に形成することができる。また、樹脂(B)を熱可塑性樹脂、熱硬化型樹脂、紫外線硬化型樹脂、電子線硬化型樹脂のいずれかとすることにより、該凹凸模様を簡単に消失または半消失させることができる。   By using any one of a thermoplastic resin, a thermosetting resin, an ultraviolet curable resin, and an electron beam curable resin as the resin (A), a fine uneven pattern can be easily formed. Moreover, by using any one of a thermoplastic resin, a thermosetting resin, an ultraviolet curable resin, and an electron beam curable resin as the resin (B), the concavo-convex pattern can be easily disappeared or semi-disappeared.

樹脂(A)の屈折率と樹脂(B)の屈折率との差が0.2以下であれば、樹脂(B)により樹脂(A)からなる凹凸模様を容易に消失又は半消失させることができる。
樹脂(B)の厚みを、樹脂(A)からなるシートの凹凸模様が形成された面のRzの少なくとも0.5倍とした場合には、凹凸模様を消失から半消失の状態にまで、凹凸模様の消失の程度を所望の程度に調節することができる。
If the difference between the refractive index of the resin (A) and the refractive index of the resin (B) is 0.2 or less, the concavo-convex pattern made of the resin (A) can be easily disappeared or semi-disappeared by the resin (B). it can.
When the thickness of the resin (B) is at least 0.5 times the Rz of the surface on which the concavo-convex pattern of the sheet made of the resin (A) is formed, the concavo-convex pattern is uneven from the disappearance to the semi-disappearance state. The degree of pattern disappearance can be adjusted to a desired degree.

本発明における装飾性シートは、透明又は半透明樹脂(A)からなるシートの表面側及び/又は裏面側の全体に凹凸模様が形成され、該凹凸模様の一部に透明又は半透明樹脂(B)が積層又は塗布され、前記凹凸模様を消失又は半消失させたことを特徴とする。
本発明において、半消失とは消失の程度の小さいことを意味する。
In the decorative sheet according to the present invention, a concavo-convex pattern is formed on the entire surface and / or back side of a sheet made of a transparent or translucent resin (A), and a transparent or translucent resin (B ) Is laminated or applied, and the concavo-convex pattern is disappeared or semi-disappeared.
In the present invention, semi-disappearance means that the degree of disappearance is small.

本発明の装飾性シートで用いる樹脂(A)は、その表面側及び/又は裏面側に凹凸模様が設けられる。本発明における樹脂(A)として使用できる樹脂は、凹凸模様を付すことができ且つ透明又は半透明である限り特に限定されず、熱可塑性樹脂、及び熱硬化型樹脂、紫外線硬化型樹脂、電子線硬化型樹脂等の硬化型樹脂のいずれも用いることができる。   The resin (A) used in the decorative sheet of the present invention is provided with an uneven pattern on the front surface side and / or the back surface side. The resin that can be used as the resin (A) in the present invention is not particularly limited as long as it can be provided with a concavo-convex pattern and is transparent or translucent. Thermoplastic resin, thermosetting resin, ultraviolet curable resin, electron beam Any curable resin such as a curable resin can be used.

本発明で使用できる熱可塑性樹脂としては、アクリル系樹脂、ポリカーボネート、ポリスチレン、ポリノルボルネン、ポリメチルペンテン−1、ウレタン樹脂、アクリロニトリルブタジエンスチレン樹脂、ポリエチレン、ポリプロピレン等のポリオレフィン樹脂等が挙げられる。   Examples of the thermoplastic resin that can be used in the present invention include acrylic resins, polycarbonate, polystyrene, polynorbornene, polymethylpentene-1, urethane resin, acrylonitrile butadiene styrene resin, polyolefin resins such as polyethylene and polypropylene, and the like.

熱硬化性樹脂としては、フェノール樹脂、ユリア樹脂、メラミン樹脂、ポリイミド樹脂、ウレタン樹脂、エポキシ樹脂、不飽和ポリエステル樹脂等が挙げられる。また、各種変性アクリレート樹脂に熱分解触媒(ベンゾイルパーオキサイド)を加えた熱硬化型樹脂も使用可能である。   Examples of the thermosetting resin include phenol resin, urea resin, melamine resin, polyimide resin, urethane resin, epoxy resin, and unsaturated polyester resin. In addition, thermosetting resins obtained by adding a thermal decomposition catalyst (benzoyl peroxide) to various modified acrylate resins can also be used.

本発明で使用できる紫外線硬化型樹脂および電子線硬化型樹脂としては、例えば、エステル(メタ)アクリレート系、エポキシ(メタ)アクリレート系、ウレタン(メタ)アクリレート系等の公知の樹脂が挙げられる。   Examples of the ultraviolet curable resin and electron beam curable resin that can be used in the present invention include known resins such as ester (meth) acrylates, epoxy (meth) acrylates, and urethane (meth) acrylates.

上記の樹脂(A)に凹凸模様を形成する方法は公知の方法でよく、例えば熱可塑性樹脂であればダイから押し出した溶融樹脂をエンボスロールとゴムロールの間で挟圧する方法が挙げられる。硬化型樹脂であれば凹凸模様を刻設した金属板等原版の上に流し込んでから所定の方法で樹脂を硬化する方法や、別途の透明又は半透明樹脂(C)からなる基材シートの上に硬化型樹脂を流延してから前記原版で押圧しつつ所定の方法で硬化するが挙げられる。なお、ここでいう透明又は半透明樹脂(C)としては、ポリエチレンテレフタレート(PET)等のポリエステル樹脂、ポリカーボネート樹脂、ABS樹脂、PMMA樹脂、及びこれらの樹脂にシリカ、アルミナ、チタンオキサイド、炭酸カルシウム、有機系微小ビーズ等の光拡散剤を含有させたものが例示できる。   The method for forming the concavo-convex pattern on the resin (A) may be a known method. For example, in the case of a thermoplastic resin, there is a method in which a molten resin extruded from a die is sandwiched between an embossing roll and a rubber roll. If it is a curable resin, it can be poured onto an original plate such as a metal plate engraved with a concavo-convex pattern and then cured by a predetermined method, or on a base sheet made of a separate transparent or translucent resin (C) Then, the curable resin is casted and then cured by a predetermined method while being pressed with the original plate. In addition, as transparent or translucent resin (C) here, polyester resin such as polyethylene terephthalate (PET), polycarbonate resin, ABS resin, PMMA resin, and these resins include silica, alumina, titanium oxide, calcium carbonate, Examples include those containing a light diffusing agent such as organic microbeads.

凹凸模様の形状は特に限定されず、多数の直線を平行に並べたストライプ状、多数の同じ形の曲線を平行に並べたウエーブ状、同心円状、三角柱を平行に並べたプリズムシート状、半球形の突起を六方充填配置的に並べたフライアイ状等が例示できる。また、原版の上をサンドペーパー等で適当に擦って得られるような、不規則な模様であってもよい。凹凸模様の山と谷との高さは、JIS B 0601の10点平均粗さRzで0.1〜200μmが好ましく、1〜50μmがより好ましく、3〜20μmが更に好ましい。   The shape of the concavo-convex pattern is not particularly limited, but is a stripe shape in which a large number of straight lines are arranged in parallel, a wave shape in which a large number of curves of the same shape are arranged in parallel, a concentric circle shape, a prism sheet shape in which triangular prisms are arranged in parallel, or a hemispherical shape A fly-eye shape in which the protrusions are arranged in a hexagonal filling arrangement can be exemplified. Further, it may be an irregular pattern obtained by rubbing the original plate with sandpaper or the like. The height of the ridges and valleys of the concavo-convex pattern is preferably from 0.1 to 200 μm, more preferably from 1 to 50 μm, still more preferably from 3 to 20 μm in terms of the 10-point average roughness Rz of JIS B 0601.

本発明では、樹脂(A)に付された凹凸模様の上に樹脂(B)を積層又は塗布することにより、凹凸模様を樹脂(B)で埋めて当該部分の凹凸模様を消失させて透明とするか、又は半消失させて半透明として文字や記号等を読み取ったり、内部を見えるようにすることができる。例えば操作盤など、インジケーターや覗き窓等を含む装置等の表面を本発明の装飾性シートで装飾する場合、インジケーターや覗き窓等を覆う部分だけに樹脂(B)を積層又は塗布して、当該部分の凹凸模様を消失又は半消失させることにより表示内容等を見やすくすることができる。このようにすれば、樹脂(B)を積層又は塗布する場所を変えることにより、複数の製品に対応できるので、1種の製品ごとに高価な原版を作成する必要がなくなり、装飾性シートを安価に製造することができる。また、必要に応じ、凹凸模様が消失又は半消失した部分の一部に加色用インク、ミラーインク等で数字、文字、記号、装飾模様等を印刷して、更に、表示を見易くすることもできる。   In the present invention, by laminating or coating the resin (B) on the concavo-convex pattern attached to the resin (A), the concavo-convex pattern is filled with the resin (B), and the concavo-convex pattern of the part is eliminated to be transparent. Or it can be made to be semi-transparent to read characters, symbols, etc., or to make the inside visible. For example, when decorating the surface of an apparatus including an indicator, a viewing window, etc., such as an operation panel, with the decorative sheet of the present invention, the resin (B) is laminated or applied only to the portion covering the indicator, the viewing window, etc. The display content and the like can be easily seen by eliminating or semi-disappearing the uneven pattern of the part. In this way, it is possible to deal with a plurality of products by changing the place where the resin (B) is laminated or applied, so that it is not necessary to create an expensive original for each type of product, and the decorative sheet is inexpensive. Can be manufactured. In addition, if necessary, numbers, letters, symbols, decorative patterns, etc. may be printed on part of the part where the uneven pattern has disappeared or semi-disappeared with additional ink, mirror ink, etc. to make the display easier to see. it can.

本発明で用いる樹脂(B)としては、上記樹脂(A)として例示したのと同様の熱可塑性樹脂、熱硬化型樹脂、紫外線硬化型樹脂、電子線硬化型樹脂を用いることができる。
樹脂(B)の選択については、樹脂(A)に付された凹凸模様の上に積層する場合は熱可塑性樹脂が好ましく、例えば、所望の消失度合により適当な厚さの熱可塑性樹脂フィルムを樹脂(A)の凹凸模様の上に当接し、熱板等で押圧融着させた後、冷却固化することにより、凹凸模様を埋めることができる。また、硬化型樹脂の場合は、例えば、モノマーやオリゴマーを印刷法等の各種塗布方法によりコーティングして凹凸模様を埋めることができる。
As the resin (B) used in the present invention, the same thermoplastic resin, thermosetting resin, ultraviolet curable resin, and electron beam curable resin as those exemplified as the resin (A) can be used.
Regarding the selection of the resin (B), a thermoplastic resin is preferable when laminating on the concavo-convex pattern attached to the resin (A). For example, a thermoplastic resin film having an appropriate thickness is selected depending on a desired degree of disappearance. The contact pattern on the concavo-convex pattern (A) is pressed and fused with a hot plate or the like, and then solidified by cooling, whereby the concavo-convex pattern can be filled. In the case of a curable resin, for example, a concavo-convex pattern can be filled by coating a monomer or oligomer by various coating methods such as a printing method.

凹凸模様上に積層又は塗布する際の樹脂(B)のうち、熱硬化型樹脂、紫外線硬化型樹脂、電子線硬化型樹脂の粘度は、凹凸模様の形状や大きさにもよるが、100,000〜10cPが好ましく、50,000〜500cPがより好ましく、10,000〜100cPが更に好ましい。粘度が100,000cPを超えた場合は樹脂(B)が樹脂(A)の凹凸模様を埋めるのに時間がかかってしまい、大量生産の妨げになることがあり、10cP未満の場合は樹脂(A)の凹凸模様の形状によっては、樹脂(B)の一部が凹凸模様の形状に沿って樹脂を積層又は塗布した範囲の外に流れ出て、消失又は半消失部(透明又は半透明部)と非消失部(凹凸模様部)のコントラストが悪くなってしまう傾向がある。   Among the resins (B) when laminated or coated on the concavo-convex pattern, the viscosity of the thermosetting resin, the ultraviolet curable resin, and the electron beam curable resin depends on the shape and size of the concavo-convex pattern. 000 to 10 cP is preferable, 50,000 to 500 cP is more preferable, and 10,000 to 100 cP is still more preferable. When the viscosity exceeds 100,000 cP, it takes time for the resin (B) to fill the uneven pattern of the resin (A), which may hinder mass production. When the viscosity is less than 10 cP, the resin (A ) Depending on the shape of the concavo-convex pattern, part of the resin (B) flows out of the range where the resin is laminated or applied along the shape of the concavo-convex pattern, and disappears or is a semi-disappearing part (transparent or translucent part). There is a tendency that the contrast of the non-disappearing portion (uneven pattern portion) is deteriorated.

本発明においては樹脂(A)の屈折率と樹脂(B)の屈折率との差が小さいほど、凹凸模様を消失又は半消失させる効果が高いため、樹脂(A)と樹脂(B)の屈折率を同じにするのがよいが、屈折率の差が0.2以下、より好ましくは0.1以下、特に好ましくは0.05以下であれば、当該部分を通して表示内容等を容易に見ることができる。   In the present invention, the smaller the difference between the refractive index of the resin (A) and the refractive index of the resin (B), the higher the effect of eliminating or semi-disappearing the concavo-convex pattern, and thus the refraction of the resin (A) and the resin (B). If the difference in refractive index is 0.2 or less, more preferably 0.1 or less, and particularly preferably 0.05 or less, the display contents etc. can be easily viewed through the portion. Can do.

また、本発明では、樹脂(B)の厚みを樹脂(A)の凹凸模様を全て埋める程度以上にすれば凹凸模様が消失し、樹脂(B)の厚みを凹凸模様が形成された面のRzの0.5倍以上、好ましくは0.8倍以上とすれば、半消失〜消失させることができる。この場合、凹凸模様の消失度を調整したり、組み合わせることにより、透明度にグラデーションを付与することも可能である。
なお、RzとはJIS B 0601に規定された十点平均粗さを意味する。また、樹脂の厚みとは、樹脂(B)が樹脂(A)の凹凸模様を全て埋めることができていない場合、樹脂(B)塗布前のRzoから塗布後のRztを引いた値d=Rzo−Rztとし、樹脂(B)が樹脂(A)の凹凸模様を埋めつくした後は、Rzo+dex(dexは、埋めつくすのに必要であった樹脂の塗布量をVo (ml/m2 )とし、全塗布量V(ml/m2 )との差Vex=V−Vo から面積で割算し、計算により求めた過剰樹脂の膜厚である。
Moreover, in this invention, if the thickness of resin (B) is made more than the grade which fills all the uneven | corrugated patterns of resin (A), an uneven | corrugated pattern will lose | disappear, and the thickness of resin (B) Rz of the surface in which the uneven | corrugated pattern was formed is If it is 0.5 times or more, preferably 0.8 times or more, it can be disappeared from half-disappearance. In this case, gradation can be imparted to the transparency by adjusting or combining the disappearance degree of the uneven pattern.
Rz means the ten-point average roughness specified in JIS B 0601. The resin thickness is a value d obtained by subtracting R zt after application from R zo before application of the resin (B) when the resin (B) does not completely fill the uneven pattern of the resin (A). = Rzo- Rzt, and after the resin (B) has filled the uneven pattern of the resin (A), Rzo + dex ( dex is the amount of resin applied necessary for filling V o (ml / m 2 ), the difference from the total coating amount V (ml / m 2 ), V ex = V−V o , divided by the area, and is the film thickness of the excess resin obtained by calculation.

以下、本発明を実施例を挙げて更に詳細に説明するが、本発明はこれら実施例のみに限定されるものではない。   EXAMPLES Hereinafter, although an Example is given and this invention is demonstrated further in detail, this invention is not limited only to these Examples.

実施例1
PET樹脂からなる200mm×300mmの基材シート(商品名:ルミラーU34、東レ株式会社製)の上に、樹脂(A)として紫外線硬化型樹脂(屈折率:1.54、商品名:M−208、東亞合成株式会社製)を厚さが30μmになるように積層し、その上から底面幅20μm、高さ10μmの三角柱が隙間なく配列された形状の原版を載置した。その状態で基材シート側から紫外線ランプGS UVシステムを用い、1100mJ/cm2 の条件で紫外線を照射して紫外線硬化樹脂を硬化させて、凹凸模様付きシートを作成した。
この模様付きシートの上に、樹脂(B)として上記樹脂(A)として用いたのと同じ紫外線硬化型樹脂を、シルク印刷器を用いて、上記模様付きシートの中央部に直径50mmの円状で樹脂(B)の厚さが20μmになるように塗布した。そして、樹脂(B)を塗布した部分に紫外線を照射して樹脂(B)を硬化させ、装飾性シート(樹脂(A)(B)の屈折率差:0)とした。
得られた装飾性シートは、樹脂(B)を塗布した部分の凹凸模様が消失し、透明になっているのが確認された。
Example 1
An ultraviolet curable resin (refractive index: 1.54, trade name: M-208) as a resin (A) on a 200 mm × 300 mm base material sheet (trade name: Lumirror U34, manufactured by Toray Industries, Inc.) made of PET resin. (Manufactured by Toagosei Co., Ltd.) was stacked so as to have a thickness of 30 μm, and an original plate having a shape in which triangular prisms having a bottom surface width of 20 μm and a height of 10 μm were arranged without gaps was placed thereon. In this state, an ultraviolet lamp GS UV system was used from the substrate sheet side to irradiate ultraviolet rays under the condition of 1100 mJ / cm 2 to cure the ultraviolet curable resin, thereby producing a sheet with an uneven pattern.
On this patterned sheet, the same ultraviolet curable resin as that used for the resin (A) as the resin (B) is formed in a circular shape having a diameter of 50 mm at the center of the patterned sheet using a silk printer. The resin (B) was applied so as to have a thickness of 20 μm. And the ultraviolet-ray was irradiated to the part which apply | coated resin (B), the resin (B) was hardened, and it was set as the decorative sheet (refractive index difference of resin (A) (B): 0).
The obtained decorative sheet was confirmed to be transparent because the uneven pattern on the portion where the resin (B) was applied disappeared.

実施例2
樹脂(B)として別の紫外線硬化型樹脂(屈折率:1.515、商品名:M−215、東亞合成株式会社製)を使用した他は実施例1と同様にして装飾性シート(樹脂(A)(B)の屈折率差:0.025)を作成した。
得られた装飾性シートは、樹脂(B)を塗布した部分の凹凸模様が消失し、透明になっているのが確認された。
Example 2
A decorative sheet (resin (resin)) was used in the same manner as in Example 1 except that another ultraviolet curable resin (refractive index: 1.515, trade name: M-215, manufactured by Toagosei Co., Ltd.) was used as the resin (B). A) (B) refractive index difference: 0.025).
The obtained decorative sheet was confirmed to be transparent because the uneven pattern on the portion where the resin (B) was applied disappeared.

実施例3
樹脂(B)として別の紫外線硬化型樹脂(屈折率:1.38、商品名:OP−38E、DIC社製)を使用した他は実施例1と同様にして装飾性シート(樹脂(A)(B)の屈折率差:0.016)を作成した。
得られた装飾性シートは、樹脂(B)を塗布した部分の凹凸模様が消失し、透明になっているのが確認された。この装飾性シートを12ポイントの文字が記載された印刷物の上に載置したところ、文字は樹脂(B)を塗布した部分を通して鮮明に読み取れた。
Example 3
A decorative sheet (resin (A)) was used in the same manner as in Example 1 except that another ultraviolet curable resin (refractive index: 1.38, trade name: OP-38E, manufactured by DIC) was used as the resin (B). (B) Refractive index difference: 0.016) was created.
The obtained decorative sheet was confirmed to be transparent because the uneven pattern on the portion where the resin (B) was applied disappeared. When this decorative sheet was placed on a printed material on which 12-point characters were written, the characters could be clearly read through the portion coated with the resin (B).

実施例4
塗布する樹脂(B)の厚さを5μm(Rzo−Rzt)とした他は実施例1と同様にして装飾性シートを作成した。
得られた装飾性シートは、樹脂(B)を塗布した部分の凹凸模様が消失し、透明になっているのが確認された。この装飾性シートを12ポイントの文字が記載された印刷物の上に載置したところ、文字は樹脂(B)を塗布した部分を通して鮮明に読み取れた。
Example 4
A decorative sheet was prepared in the same manner as in Example 1 except that the thickness of the resin (B) to be applied was changed to 5 μm (R zo -R zt ).
The obtained decorative sheet was confirmed to be transparent because the uneven pattern on the portion where the resin (B) was applied disappeared. When this decorative sheet was placed on a printed material on which 12-point characters were written, the characters could be clearly read through the portion coated with the resin (B).

実施例5
樹脂(B)として熱硬化型樹脂(屈折率:1.506、商品名:M−140、東亞合成株式会社製)を使用し、120℃の恒温器中で2分間硬化させた他は実施例1と同様にして装飾性シート(樹脂(A)(B)の屈折率差:0.034)を作成した。
得られた装飾性シートは、樹脂(B)を塗布した部分の凹凸模様が消失し、透明になっているのが確認された。
Example 5
A thermosetting resin (refractive index: 1.506, trade name: M-140, manufactured by Toagosei Co., Ltd.) was used as the resin (B) and was cured in a thermostat at 120 ° C. for 2 minutes. In the same manner as in Example 1, a decorative sheet (Refractive index difference of resins (A) and (B): 0.034) was prepared.
The obtained decorative sheet was confirmed to be transparent because the uneven pattern on the portion where the resin (B) was applied disappeared.

実施例6
樹脂(B)として電子線硬化型樹脂(屈折率:1.501、商品名:M−113、東亞合成株式会社製)を使用し、電子線照射装置(商品名:E−B−ENGINE、浜松ホトニクス株式会社製)を使用して硬化させた他は実施例1と同様にして装飾性シート(樹脂(A)(B)の屈折率差:0.039)を作成した。
得られた装飾性シートは、樹脂(B)を塗布した部分の凹凸模様が消失し、透明になっているのが確認された。
Example 6
An electron beam curable resin (refractive index: 1.501, trade name: M-113, manufactured by Toagosei Co., Ltd.) is used as the resin (B), and an electron beam irradiation device (trade name: EB-ENGINE, Hamamatsu). A decorative sheet (refractive index difference of resins (A) and (B): 0.039) was prepared in the same manner as in Example 1 except that it was cured using Photonics Co., Ltd.
The obtained decorative sheet was confirmed to be transparent because the uneven pattern on the portion where the resin (B) was applied disappeared.

実施例7
樹脂(B)として熱可塑性樹脂(屈折率:1.53、商品名:ノバテックHF133、日本ポリエチレン株式会社製)を使用し、該樹脂からなる厚さ20μmフィルムを所定の形状にカッティングし、熱板を用い130℃で熱圧着させた他は実施例1と同様にして装飾性シート(樹脂(A)(B)の屈折率差:0.01)を作成した。
得られた装飾性シートは、樹脂(B)を塗布した部分の凹凸模様が消失し、透明になっているのが確認された。この装飾性シートを12ポイントの文字が記載された印刷物の上に載置したところ、文字は樹脂(B)を塗布した部分を通して鮮明に読み取れた。
Example 7
A thermoplastic resin (refractive index: 1.53, product name: Novatec HF133, manufactured by Nippon Polyethylene Co., Ltd.) is used as the resin (B), a 20 μm thick film made of the resin is cut into a predetermined shape, and a hot plate A decorative sheet (refractive index difference of resins (A) and (B): 0.01) was prepared in the same manner as in Example 1 except that thermocompression bonding was performed at 130 ° C.
The obtained decorative sheet was confirmed to be transparent because the uneven pattern on the portion where the resin (B) was applied disappeared. When this decorative sheet was placed on a printed material on which 12-point characters were written, the characters could be clearly read through the portion coated with the resin (B).

実施例8
模様付きシートを市販のプリズムシート(屈折率:1.585、商品名:GTL6000、五洋紙工株式会社製、プリズムのピッチ50μm、Rz:25μm)に変え、塗布する樹脂(B)の厚さを50μmに変えた他は実施例1と同様にして装飾性シート(樹脂(A)(B)の屈折率差:0.045)を作成した。
得られた装飾性シートは、樹脂(B)を塗布した部分の凹凸模様が消失し、透明になっているのが確認された。
Example 8
The patterned sheet is changed to a commercially available prism sheet (refractive index: 1.585, trade name: GTL6000, manufactured by Goyo Paper Industries Co., Ltd., prism pitch 50 μm, Rz: 25 μm), and the thickness of the resin (B) to be applied is changed. A decorative sheet (refractive index difference of resins (A) and (B): 0.045) was prepared in the same manner as in Example 1 except that the thickness was changed to 50 μm.
The obtained decorative sheet was confirmed to be transparent because the uneven pattern on the portion where the resin (B) was applied disappeared.

実施例9
樹脂(A)として紫外線硬化型樹脂(屈折率:1.573、商品名:オクゾールEA−1000、大阪ガスケミカル株式会社製)を使用した他は実施例3と同様にして装飾性シート(樹脂(A)(B)の屈折率差:0.19)を作成した。
得られた装飾性シートは、樹脂(B)を塗布した部分の凹凸模様が消失し、透明になっているのが確認された。この装飾性シートを12ポイントの文字が記載された印刷物の上に載置したところ、文字は樹脂(B)を塗布した部分を通して鮮明に読み取れた。
Example 9
A decorative sheet (resin (resin (A)) was used in the same manner as in Example 3 except that an ultraviolet curable resin (refractive index: 1.573, trade name: Oxol EA-1000, manufactured by Osaka Gas Chemical Co., Ltd.) was used as the resin (A). A) Refractive index difference of (B): 0.19) was prepared.
The obtained decorative sheet was confirmed to be transparent because the uneven pattern on the portion where the resin (B) was applied disappeared. When this decorative sheet was placed on a printed material on which 12-point characters were written, the characters could be clearly read through the portion coated with the resin (B).

実施例10
樹脂(A)として紫外線硬化型樹脂(屈折率:1.607、商品名:オクゾールEA−F5003、大阪ガスケミカル株式会社製)を使用した他は実施例3と同様にして装飾性シート(樹脂(A)(B)の屈折率差:0.227)を作成した。
得られた装飾性シートは、樹脂(B)を塗布した部分の凹凸模様が半消失し、半透明になっているのが確認された。この装飾性シートを12ポイントの文字が記載された印刷物の上に載置したところ、文字は樹脂(B)を塗布した部分を通して鮮明ではないが読み取れた。
Example 10
A decorative sheet (resin (resin (A)) was used in the same manner as in Example 3 except that an ultraviolet curable resin (refractive index: 1.607, trade name: Oxol EA-F5003, manufactured by Osaka Gas Chemical Co., Ltd.) was used as the resin (A). A) Refractive index difference of (B): 0.227) was prepared.
It was confirmed that the obtained decorative sheet was semi-transparent, with the uneven pattern on the portion where the resin (B) was applied disappeared. When this decorative sheet was placed on a printed material on which 12-point characters were written, the characters could be read though not clearly through the portion coated with the resin (B).

叙上のとおり、本発明に係る装飾性シート及びその製造方法は、任意の部分の凹凸模様を容易に消失又は半消失させることができ、且つ凹凸模様が消失又は半消失した部分が異なるシートを製造するための複数の原版を用意する必要がないので、デザイン性に優れた装飾性シートを安価に提供することができる。   As described above, the decorative sheet and the manufacturing method thereof according to the present invention can easily eliminate or semi-disappear the concavo-convex pattern of any part, and the sheet in which the concavo-convex pattern has disappeared or semi-disappeared is different. Since it is not necessary to prepare a plurality of original plates for manufacturing, a decorative sheet excellent in design can be provided at low cost.

Claims (8)

透明又は半透明樹脂(A)からなるシートの表面側及び/又は裏面側の凹凸模様が形成され、該凹凸模様の一部に透明又は半透明樹脂(B)が積層又は塗布され、前記凹凸模様を消失又は半消失させたことを特徴とする装飾性シート。   A concavo-convex pattern on the front side and / or back side of a sheet made of a transparent or translucent resin (A) is formed, and a transparent or translucent resin (B) is laminated or applied to a part of the concavo-convex pattern, and the concavo-convex pattern A decorative sheet characterized by eliminating or semi-disappearing. 前記樹脂(A)が、熱可塑性樹脂、熱硬化型樹脂、紫外線硬化型樹脂、電子線硬化型樹脂のいずれかであることを特徴とする請求項1に記載の装飾性シート。   The decorative sheet according to claim 1, wherein the resin (A) is any one of a thermoplastic resin, a thermosetting resin, an ultraviolet curable resin, and an electron beam curable resin. 前記樹脂(B)が、熱可塑性樹脂、熱硬化型樹脂、紫外線硬化型樹脂、電子線硬化型樹脂のいずれかであることを特徴とする請求項1又は2に記載の装飾性シート。   The decorative sheet according to claim 1 or 2, wherein the resin (B) is any one of a thermoplastic resin, a thermosetting resin, an ultraviolet curable resin, and an electron beam curable resin. 前記樹脂(A)の屈折率と前記樹脂(B)の屈折率との差が0.2以下であることを特徴とする請求項1〜3のいずれかに記載の装飾性シート。   The decorative sheet according to any one of claims 1 to 3, wherein a difference between a refractive index of the resin (A) and a refractive index of the resin (B) is 0.2 or less. 前記樹脂(B)の厚みが、前記樹脂(A)からなるシートの凹凸模様が形成された面のRzの少なくとも0.5倍であることを特徴とする請求項1〜4のいずれかに記載の装飾性シート。   The thickness of the resin (B) is at least 0.5 times the Rz of the surface on which the uneven pattern of the sheet made of the resin (A) is formed. Decorative sheet. 前記樹脂(A)からなるシートの片側に透明又は半透明樹脂(C)からなる基材シートが積層されていることを特徴とする請求項1〜5のいずれかに記載の装飾性シート。   The decorative sheet according to any one of claims 1 to 5, wherein a base sheet made of a transparent or translucent resin (C) is laminated on one side of the sheet made of the resin (A). 前記樹脂(C)がポリエステル樹脂であることを特徴とする請求項6に記載の装飾性シート。   The decorative sheet according to claim 6, wherein the resin (C) is a polyester resin. 表面側又は裏面側の凹凸模様が設けられたシートの任意の位置に、前記凹凸模様の上から透明又は半透明樹脂(B)を塗布し、その後、該樹脂(B)を冷却固化又は硬化させることにより、前記樹脂(B)を塗布した部分の凹凸模様を消失又は半消失させることを特徴とする装飾性シートの製造方法。   A transparent or translucent resin (B) is applied from above the concavo-convex pattern to any position of the sheet provided with the concavo-convex pattern on the front side or the back side, and then the resin (B) is cooled and solidified or cured. By this, the uneven | corrugated pattern of the part which apply | coated the said resin (B) is lose | disappeared or semi-disappearing, The manufacturing method of the decorative sheet characterized by the above-mentioned.
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JP2015066753A (en) * 2013-09-27 2015-04-13 大日本印刷株式会社 Decoration sheet
JP2019530594A (en) * 2016-09-29 2019-10-24 ダウ グローバル テクノロジーズ エルエルシー Coated film and articles formed therefrom
WO2020084895A1 (en) * 2018-10-26 2020-04-30 Nissha株式会社 Transfer sheet and decorative article using same

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JPH1015987A (en) * 1996-06-27 1998-01-20 Nissha Printing Co Ltd Hairline interstice insert film, hairline interstice insert molding, and its manufacture
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015066753A (en) * 2013-09-27 2015-04-13 大日本印刷株式会社 Decoration sheet
JP2019530594A (en) * 2016-09-29 2019-10-24 ダウ グローバル テクノロジーズ エルエルシー Coated film and articles formed therefrom
JP7377711B2 (en) 2016-09-29 2023-11-10 ダウ グローバル テクノロジーズ エルエルシー Coated films and articles formed therefrom
WO2020084895A1 (en) * 2018-10-26 2020-04-30 Nissha株式会社 Transfer sheet and decorative article using same
JP2020066192A (en) * 2018-10-26 2020-04-30 Nissha株式会社 Transfer sheet and decorative article using the same
CN112912239A (en) * 2018-10-26 2021-06-04 日写株式会社 Transfer sheet and decorative article using the same
CN112912239B (en) * 2018-10-26 2022-10-18 日写株式会社 Transfer sheet and decorative article using the same

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