JP2004299200A - Manufacturing method for decorating article - Google Patents

Manufacturing method for decorating article Download PDF

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Publication number
JP2004299200A
JP2004299200A JP2003093777A JP2003093777A JP2004299200A JP 2004299200 A JP2004299200 A JP 2004299200A JP 2003093777 A JP2003093777 A JP 2003093777A JP 2003093777 A JP2003093777 A JP 2003093777A JP 2004299200 A JP2004299200 A JP 2004299200A
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Japan
Prior art keywords
layer
infrared
decorative
resin
decorative layer
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JP2003093777A
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Japanese (ja)
Inventor
Tadahiro Murakami
忠弘 村上
Hiroyasu Shigeta
裕康 重田
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Nissha Printing Co Ltd
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Nissha Printing Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method for a transparent decorating article which enables patternization and which hardly affects a color tone of a decorating layer. <P>SOLUTION: The transparent decorating layer 4 including an infrared-ray absorbent is formed on a base material 1; infrared laser light for patternizing the transparent decorating layer by applying the infrared laser light is YAG laser light; and the infrared-ray absorbent is an immonium-based compound. Even if the decorating layer is the transparent decorating layer with a light color such as a tint color, the laser light is prevented from being transmitted and diffused. This brings about the effect of enabling the patternization of the transparent decorating layer without adversely affecting the color tone. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【産業上の利用分野】
本発明は、通信機器に使われるキーシートや電気機器、自動車部品などに使われるキーボタンなどの加飾物の製造方法に関するものであり、その中でとくにレーザーマーキング法による加飾物の製造方法に関する。
【0002】
【従来技術】
レーザーマーキング法は、基材に加飾層を形成した後、レーザー光線により一部の加飾層を除去しパターン化する方法である。このレーザーマーキング法に使用されているレーザーの種類と波長、メカニズムは表1の通りである。
【0003】
(表1)

Figure 2004299200
【0004】
この中でエキシマレーザーは、紫外線領域に吸収を持ち熱作用以外の化学活性線として利用されている。また、YAG半波長変換レーザーは、主に可視域に吸収を持つため色濃度の高い着色加飾層のマーキングに利用されている。
【0005】
【本発明が解決しようとしている課題】
しかし、加飾層がチント色などの色の薄い透光性加飾層の場合には、前記エキシマレーザーまたはYAG半波長変換レーザーを用いたときにレーザー光が透過拡散してしまうため、パターン化が困難であった。また、透光性加飾層は、着色材の含有量が少ないため着色材の一部が少し変質しただけで色調への悪影響が生じていた。
【0006】
【課題を解決するための手段】
そこで、本発明者は、レーザーマーキング法に用いるレーザー光として、透光性の高い加飾層においてもパターン化が可能であり、かつ加飾層の色調への影響が少ないYAGレーザーや炭酸ガスレーザーなどの赤外線レーザー光を選定した。そして、赤外線レーザー光の吸収効率を向上させレーザーマーキングを円滑にするために、赤外線レーザーの波長域近辺に極大吸収波長を持ち、かつ大きな吸光係数を有する赤外線吸収剤を透光性加飾層に含有させることにした。
【0007】
すなわち、本発明は、基材上に赤外線吸収剤を含む透光性加飾層を形成し、赤外線レーザー光を照射して該透光性加飾層を部分的に除去することにより、該透光性加飾層を抜きパターンにすることを特徴とする加飾物の製造方法である。
【0008】
また、本発明は、前記赤外線レーザー光がYAGレーザー光であり、赤外線吸収剤がイモニウム系化合物である加飾物の製造方法である。そして、前記赤外線吸収剤を含む透光性加飾層のパターン化により、赤外線吸収剤を含まない透光性加飾層が露出した加飾物が得られる。
【0009】
【発明の実施の形態】
以下、本発明を詳細に説明する。本発明によって得られる加飾物は、少なくとも基材上に赤外線吸収剤を含む透光性加飾層がパターン形成されている。そして、本発明によって得られる加飾物は、この透光性加飾層のほかに光輝層、遮光性加飾層、接着層、アンカー層などが構成されていてもよい。
【0010】
基材は、シート状のものであってもよいし、立体形状のものであってもよい。シート状のものとしてはプラスチックシートやガラス板、金属板などがあり、立体形状のものとしては樹脂成形品やセラミック成形品、金属塊などがある。その中で代表的なプラスチックシートと樹脂成形品の例を以下に説明する。
【0011】
プラスチックシートとしては、ポリエステル、ポリカーボネート、ポリアミド、ポリイミド、アクリル、オレフィン、ウレタン、アクリロニトリルブタジエンスチレンなどの樹脂等から選択される単層フィルム、またはこの中から選択された2種以上の樹脂による積層フィルムまたは共重合フィルムがある。
【0012】
プラスチックシートの厚みは、25〜200μmが好ましい。厚みが25μm未満の場合、レーザーマーキングやインサート成形時のハンドリングが悪く工程が不安定となる。厚みが200μmを越える場合、シートの厚みによるコシの強さにより最終製品のキーシート部材としてのキー摺動性に不具合が生じる。
【0013】
樹脂成形品としては、ポリエステル、ポリカーボネート、ポリアミド、ポリイミド、アクリル、オレフィン、ウレタン、アクリロニトリルブタジエンスチレンなどの樹脂等から選択される成形樹脂、またはこの中から選択された2種以上の成形樹脂による射出成形品や圧縮成形品、ブロー成形品などがある。
【0014】
樹脂成形品の形状はとくに限定されない。ただし、加飾層を設けるためには平坦な平面部を有する形状が好ましい。平坦な平面部を有していない場合、加飾層を設ける際に汎用の印刷方法が適用できず塗装などの一部の方法に限定されてしまうためである。
【0015】
透光性加飾層は、少なくとも赤外線吸収剤が含有された樹脂バインダーからなり、少量の着色材を含んでいる。少量とは、着色材含有後の透光性加飾層の光線透過率が20%以上である量である。
【0016】
赤外線吸収剤は、イモニウム系、アミニウム系、シアニン系、ポリメチン系、アントラキノン系化合物などがある。この中でもイモニウム系化合物は、最大吸収波長が1060〜1085nmとYAGレーザーの波長1064nm付近に有り、かつ吸光係数が86000と大きく、しかも可視光領域の透光性が高いという、最適な赤外線吸収剤である。
【0017】
樹脂バインダーは、基材シートまたは樹脂部材に対し密着する樹脂を選択すると良い。とくに、耐熱性があり各種基材シートへの密着性に優れた二液硬化型のウレタン系又はポリエステル系の樹脂が好ましい。
【0018】
着色材は、カーボンブラック、酸化鉄、モノアゾイエローなどの着色顔料、アルミニウム、亜鉛、銀、銅などの金属粉からなるメタリック顔料のほか、着色染料や体質顔料などがある。
【0019】
赤外線吸収剤の含有量は、1〜70%の範囲が好ましい。1%未満であるとほとんど赤外線吸収効果が得られない。一方、70%以上であると加飾層内の凝集力が低下し凝集破壊が生じやすい。着色材の含有量は、材質により隠蔽性が異なるため、一慨には決まらないが1〜10%の範囲が好ましい。
【0020】
透光性加飾層の形成方法は、グラビア印刷、シルク印刷、オフセット印刷などの方法のほか、コーターによるコーティング法や塗装法などがある。
【0021】
また、透光性加飾層の後方には、必要に応じて光輝層を形成してもよい。光輝層としては、アルミニウム、クロム、インジウムなどの金属蒸着層や金属メッキ層のほか、パール顔料、メタリック顔料などを含む光輝性樹脂層がある。
【0022】
光輝層を形成することによって、チント色の色彩が鮮明になり意匠性に優れた加飾物が得られる効果がある。
【0023】
金属蒸着層の形成方法は、真空蒸着法やスパッタリング法などがある。金属メッキ層の形成方法は、電解メッキ法や化学メッキ法などがある。光輝性樹脂層の形成方法は、樹脂インキ化しグラビア印刷やシルク印刷する方法などがある。また特殊な方法として、光輝性ホットスタンプ箔などを利用して透光性加飾層に転写積層形成する方法がある。
【0024】
遮光性加飾層は、隠蔽性のある着色材と樹脂バインダーなどからなる。隠蔽性のある着色材としては、カーボンブラック、弁柄などがある。樹脂バインダーとしては、透光性加飾層または他の層に対し密着する樹脂を適宜選択すると良い。遮光性加飾層の形成方法は、グラビア印刷、シルク印刷、塗装法を用いて形成すると良い。
【0025】
接着層としては、アクリル系樹脂、ポリカーボネート系樹脂、塩化ビニル酢酸ビニル系樹脂などを挙げることができ、一体化させる成形樹脂に応じて適宜選択すると良い。また、場合によっては、特殊アクリル系樹脂の感圧粘着剤などでも良い。また、各層間の密着が不足している場合には、適宜その層間にアンカー層を設けるとよい。
【0026】
得られた加飾物は、必要に応じて、金型プレス法、圧空プレス法により所望の形状に加工しておいてもよい。また、金型プレス加工法、トムソン加工法、パンチ加工法などにより、所定の位置に位置合わせ用の穴などを設けておいてもよい。
【0027】
また、得られた加飾物と他の成形樹脂などとを一体化してもよい。一体化の方法としては、加飾物を位置が合うように成形金型内にセットし成形樹脂を充填する方法である。成形樹脂としては、耐熱性および耐衝撃性に優れたポリカーボネート樹脂や透明性および表面強度に優れたアクリル樹脂、アクリロニトリルブタジエンスチレン樹脂などがある。なお、この場合にはレーザーマーキングによる加工を加飾物と他の成形樹脂などとを一体化させた後に行っても良い。
【0028】
【実施例】
(実施例1)厚み75μmのポリエチレンテレフタレートフィルム(両面易接着処理)にエポリン社製 「赤外線吸収剤エポライト1117(λmax=1069nm)」を添加したアクリル・塩化ビニル系樹脂の一液型インキを用いて透明赤色透光性加飾層を形成し、次いでウレタン樹脂系の二液硬化型インキを用いて蒸着アンカー層をグラビア印刷法により形成した。これを180℃×30秒/mにて熱処理後に真空蒸着法にて厚み600±50Åのアルミ金属層を形成した。次いで塩化ビニル酢酸ビニル共重合体樹脂系の一液型インキを用いて、赤外線吸収剤を含まない遮光性加飾層(黒色)をグラビア印刷法により形成した。
【0029】
これをトムソン型により適当な大きさに断裁後、YAGレーザー(λ=1064nm)にてポリエチレンテレフタレートフィルム面から、遮光性加飾層が露出するよう除去し部分的に表示意匠を形成した。次いでポリエチレンテレフタレートフィルム面にポリエステルウレタン(二液硬化型)系樹脂からなる透明インキ、次いでポリカーボネート系樹脂からなる部分接着層を各々膜厚3μmでスクリーン印刷法により形成し、加飾シートを得た。
【0030】
この加飾シートを接着層が該ゲート部に位置するように配置し、バイエル製ポリカーボネート系樹脂「マクロロン 2205」を溶融、射出し、冷却個化させて加飾シートと成形樹脂とを一体化した後、金型プレス法により不要シート部を除去して所望の加飾物を得た。
【0031】
(実施例2)表示意匠を形成するまでは前記実施例1と同様にした。次いでポリエチレンテレフタレートフィルム面に特殊アクリル系の感圧粘着剤からなる部分接着層を膜厚20μmでスクリーン印刷法により形成、金型プレス法により不要シート部分を除去した。その後、バイエル製ポリカーボネート系樹脂「マクロロン2205」を用いて射出成形した成形品を位置決め治具にセットし、その上に加飾シートを置き、1kg/cmの荷重を10秒かけることで加飾シートと成形品とが一体化した所望の加飾物を得た。
【0032】
(実施例3)厚み50μmのポリエチレンテレフタレートフィルム(両面易接着処理)を用いた以外、表示意匠を形成するまでは前記実施例1と同様にした。次いで,
金型プレス法によりエンボス形状に一次成形し、位置決めガイド穴を設けた。次いでこの加飾シートを接着層が該ゲート部に位置するように配置し、東レ製アクリロニトリルブタジエンスチレン系樹脂「トヨラック920」を溶融、射出し、冷却個化させて加飾シートと成形樹脂とを一体化し、所望の加飾物を得た。
【0033】
(実施例4)厚み25μmのポリエチレンテレフタレートフィルムにアクリル系の一液インキを用いて剥離層を、次いで「赤外線吸収剤エポライト1151(λmax=1072nm)」を添加したアクリル・ビニル系の一液型インキを用いて透明赤色透光性加飾層を形成し、次いでウレタン系の二液硬化型インキを用いて蒸着アンカー層をグラビア印刷法により形成した。これを180℃×30秒/mにて熱処理後に真空蒸着法にて厚み600±50Åのクロム金属層を形成した。次いで塩酢ビ系の一液型インキを用いて、黒色遮光層及び赤外線吸収剤を含まない透光層(白色層)、接着層をグラビア印刷法により形成し転写箔を作成した。これを透明アクリロニトリルブタジエンスチレンシートと熱ラミネートし、積層シートを得た。
【0034】
この積層シートをトムソン型により適当な大きさに断裁後、圧空プレス法によりエンボス形状に一次成形し、位置決めガイド穴を設けた。この積層シートをアクリロニトリルブタジエンスチレンシート面が該ゲート部に位置するように配置し、東レ製アクリロニトリルブタジエンスチレンシート樹脂「トヨラック920」を溶融、射出し、冷却個化させて加飾シートと成形樹脂とを一体化させて加飾成形品を得た。
【0035】
この加飾成形品にYAGレーザー(λ=1064nm)にて剥離層から白色層が露出するよう除去し部分的に表示意匠を形成した。これにUV硬化型オーバーコート剤を塗布、UV硬化させた後に,金型プレス法により不要シート部を除去して所望の加飾物を得た。
【0036】
【本発明の効果】
本発明は、基材上に赤外線吸収剤を含む透光性加飾層を形成し、赤外線レーザー光を照射して透光性加飾層をパターン化することを特徴とする加飾物の製造方法である。また、本発明は、前記赤外線レーザー光がYAGレーザー光であり、赤外線吸収剤がイモニウム系化合物である加飾物の製造方法である。
【0037】
したがって、加飾層がチント色などの色の薄い透光性加飾層の場合であっても、レーザー光が透過拡散することがない。その結果、色調に悪影響が生じることなく透光性加飾層のパターン化が可能になる効果がある。
【図面の簡単な説明】
【図1】本発明に係る加飾物の一実施例を示す平面図である。
【図2】本発明に係る加飾物の一実施例を示す断面図である。
【符号の説明】
1 基材
2 赤外線吸収剤を含む透光性加飾層
3 光輝層
4 遮光性加飾層
5 加飾物[0001]
[Industrial applications]
The present invention relates to a method for manufacturing a decorative article such as a key sheet used for a communication apparatus, a key button used for an electric apparatus, an automobile part, and the like, and particularly to a method for manufacturing a decorative article by a laser marking method.
[0002]
[Prior art]
The laser marking method is a method in which after a decorative layer is formed on a base material, a part of the decorative layer is removed by a laser beam to form a pattern. Table 1 shows the type, wavelength, and mechanism of the laser used in this laser marking method.
[0003]
(Table 1)
Figure 2004299200
[0004]
Among them, the excimer laser has absorption in the ultraviolet region and is used as a chemically active ray other than the thermal action. YAG half-wavelength conversion lasers are mainly used in the marking of colored decorative layers having high color density because they have absorption in the visible region.
[0005]
[Problems to be solved by the present invention]
However, when the decorative layer is a light-transmitting decorative layer having a thin color such as tint, laser light is transmitted and diffused when the excimer laser or the YAG half-wavelength conversion laser is used. Was difficult. In addition, since the translucent decorative layer has a small content of the coloring material, even a part of the coloring material is slightly changed in quality, which adversely affects the color tone.
[0006]
[Means for Solving the Problems]
Therefore, the present inventor has proposed that, as a laser beam used in a laser marking method, a YAG laser or a carbon dioxide laser that can be patterned even in a highly translucent decorative layer and has little effect on the color tone of the decorative layer. Infrared laser light such as was selected. Then, in order to improve the absorption efficiency of infrared laser light and facilitate laser marking, an infrared absorber having a maximum absorption wavelength near the wavelength range of the infrared laser and having a large absorption coefficient is used for the translucent decorative layer. It was decided to include it.
[0007]
That is, the present invention provides a transparent decoration layer containing an infrared absorbent on a substrate, and irradiates an infrared laser beam to partially remove the transparent decoration layer. This is a method for producing a decorative article, characterized in that the light decorative layer is formed into a cut pattern.
[0008]
Further, the present invention is the method for producing a decorative article, wherein the infrared laser beam is a YAG laser beam, and the infrared absorber is an immonium-based compound. Then, by patterning the translucent decorative layer containing the infrared absorbent, a decorative article in which the translucent decorative layer not containing the infrared absorbent is exposed can be obtained.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail. In the decorative product obtained by the present invention, a translucent decorative layer containing an infrared absorbent is pattern-formed on at least a substrate. The decoration obtained by the present invention may include a glitter layer, a light-blocking decoration layer, an adhesive layer, an anchor layer, and the like in addition to the light-transmitting decoration layer.
[0010]
The substrate may be in a sheet shape or a three-dimensional shape. Examples of the sheet shape include a plastic sheet, a glass plate, and a metal plate, and examples of the three-dimensional shape include a resin molded product, a ceramic molded product, and a metal lump. Among them, examples of typical plastic sheets and resin molded products will be described below.
[0011]
As the plastic sheet, polyester, polycarbonate, polyamide, polyimide, acrylic, olefin, urethane, acrylonitrile butadiene styrene and the like a single-layer film selected from resins and the like, or a laminated film of two or more resins selected from these or There is a copolymer film.
[0012]
The thickness of the plastic sheet is preferably from 25 to 200 μm. If the thickness is less than 25 μm, handling during laser marking and insert molding is poor, and the process becomes unstable. When the thickness exceeds 200 μm, the key slidability as a key sheet member of a final product is disadvantageous due to the stiffness due to the thickness of the sheet.
[0013]
As the resin molded product, a molding resin selected from resins such as polyester, polycarbonate, polyamide, polyimide, acrylic, olefin, urethane, acrylonitrile butadiene styrene, or injection molding with two or more types of molding resins selected from these. Products, compression molded products, blow molded products, etc.
[0014]
The shape of the resin molded product is not particularly limited. However, in order to provide the decorative layer, a shape having a flat plane portion is preferable. This is because, when the decorative layer is not provided, a general-purpose printing method cannot be applied when the decorative layer is provided, and the method is limited to a partial method such as painting.
[0015]
The translucent decorative layer is made of a resin binder containing at least an infrared absorber, and contains a small amount of a coloring material. The small amount is an amount at which the light transmittance of the translucent decorative layer after containing the coloring material is 20% or more.
[0016]
Examples of the infrared absorber include an immonium-based compound, an aminium-based compound, a cyanine-based compound, a polymethine-based compound, and an anthraquinone-based compound. Among them, an immonium-based compound is an optimal infrared absorber having a maximum absorption wavelength of 1060 to 1085 nm and a wavelength of about 1064 nm of a YAG laser, a large extinction coefficient of 86,000, and a high translucency in a visible light region. is there.
[0017]
As the resin binder, a resin that is in close contact with the base sheet or the resin member is preferably selected. In particular, a two-component curable urethane-based or polyester-based resin having heat resistance and excellent adhesion to various base sheets is preferable.
[0018]
Examples of the coloring material include coloring pigments such as carbon black, iron oxide, and monoazo yellow; metallic pigments composed of metal powders such as aluminum, zinc, silver, and copper; and coloring dyes and extender pigments.
[0019]
The content of the infrared absorber is preferably in the range of 1 to 70%. If it is less than 1%, almost no infrared absorption effect can be obtained. On the other hand, if it is 70% or more, the cohesive force in the decorative layer is reduced, and cohesive failure tends to occur. The content of the coloring material is not generally determined because the concealing property varies depending on the material, but is preferably in the range of 1 to 10%.
[0020]
Methods for forming the translucent decorative layer include gravure printing, silk printing, offset printing, and other methods, as well as a coating method and a coating method using a coater.
[0021]
In addition, a glitter layer may be formed behind the translucent decorative layer as needed. Examples of the glittering layer include a glittering resin layer containing a pearl pigment, a metallic pigment, and the like, in addition to a metal deposition layer or a metal plating layer of aluminum, chromium, indium, or the like.
[0022]
By forming the glittering layer, the tint color becomes clearer, and there is an effect that a decorative article having excellent design properties can be obtained.
[0023]
The method for forming the metal deposition layer includes a vacuum deposition method and a sputtering method. The method for forming the metal plating layer includes an electrolytic plating method and a chemical plating method. As a method of forming the glittering resin layer, there is a method of gravure printing or silk printing using a resin ink. As a special method, there is a method of forming a transfer laminate on a translucent decorative layer using a glittering hot stamp foil or the like.
[0024]
The light-shielding decorative layer is made of a colorant having a shielding property and a resin binder. Examples of the colorant having a concealing property include carbon black and red iron oxide. As the resin binder, a resin that adheres to the translucent decorative layer or another layer may be appropriately selected. The light-shielding decorative layer may be formed using gravure printing, silk printing, or a painting method.
[0025]
As the adhesive layer, an acrylic resin, a polycarbonate resin, a vinyl chloride vinyl acetate resin, or the like can be given, and it is preferable to appropriately select the adhesive layer according to the molding resin to be integrated. In some cases, a special acrylic resin pressure-sensitive adhesive may be used. If the adhesion between the layers is insufficient, an anchor layer may be appropriately provided between the layers.
[0026]
The obtained decorative article may be processed into a desired shape by a die pressing method or a compressed air pressing method as necessary. In addition, holes for positioning may be provided at predetermined positions by a die pressing method, a Thomson processing method, a punching method, or the like.
[0027]
Further, the obtained decorative article may be integrated with another molding resin. As a method of integration, a decoration is set in a molding die so as to be aligned, and a molding resin is filled. Examples of the molding resin include a polycarbonate resin excellent in heat resistance and impact resistance, an acrylic resin excellent in transparency and surface strength, and an acrylonitrile butadiene styrene resin. In this case, the processing by laser marking may be performed after the decorative article and other molding resin are integrated.
[0028]
【Example】
(Example 1) Using a one-pack type acrylic / vinyl chloride resin ink obtained by adding “Infrared absorbent Epolite 1117 (λmax = 1069 nm)” manufactured by Eporin to a 75 μm-thick polyethylene terephthalate film (both sides are easily bonded). A transparent red translucent decorative layer was formed, and then a deposition anchor layer was formed by a gravure printing method using a urethane resin-based two-component curable ink. After heat treatment at 180 ° C. × 30 seconds / m, an aluminum metal layer having a thickness of 600 ± 50 ° was formed by a vacuum evaporation method. Next, a light-shielding decorative layer (black) containing no infrared absorber was formed by a gravure printing method using a one-pack type vinyl chloride-vinyl acetate copolymer resin ink.
[0029]
This was cut into an appropriate size by a Thomson mold, and then removed from the surface of the polyethylene terephthalate film with a YAG laser (λ = 1064 nm) so that the light-shielding decorative layer was exposed, thereby partially forming a display design. Next, a transparent ink composed of a polyester urethane (two-component curing type) resin and a partial adhesive layer composed of a polycarbonate resin were formed on the surface of the polyethylene terephthalate film with a thickness of 3 μm by screen printing to obtain a decorative sheet.
[0030]
This decorative sheet was arranged so that the adhesive layer was located at the gate portion, and the Bayer-based polycarbonate resin “Macrolon 2205” was melted, injected, cooled and singulated to integrate the decorative sheet with the molding resin. Thereafter, an unnecessary sheet portion was removed by a die pressing method to obtain a desired decorative product.
[0031]
Example 2 The procedure was the same as in Example 1 until a display design was formed. Next, a partial adhesive layer made of a special acrylic pressure-sensitive adhesive was formed on the surface of the polyethylene terephthalate film by a screen printing method with a film thickness of 20 μm, and an unnecessary sheet portion was removed by a die pressing method. Thereafter, a molded product injection-molded using Bayer polycarbonate resin "Macrolon 2205" is set in a positioning jig, a decorative sheet is placed thereon, and a load of 1 kg / cm 2 is applied for 10 seconds to be decorated. A desired decorative article in which the sheet and the molded article were integrated was obtained.
[0032]
(Example 3) The same operation as in Example 1 was performed until a display design was formed, except that a polyethylene terephthalate film having a thickness of 50 μm (both surfaces were easily adhered) was used. Then,
It was primarily formed into an embossed shape by a die pressing method, and a positioning guide hole was provided. Next, the decorative sheet is disposed so that the adhesive layer is located at the gate portion, and the acrylonitrile butadiene styrene resin “Toyolac 920” manufactured by Toray is melted, injected, cooled and singulated to separate the decorative sheet and the molding resin. It unified and obtained the desired decoration.
[0033]
(Example 4) An acrylic vinyl one-pack type ink obtained by adding a release layer to a 25 μm-thick polyethylene terephthalate film using an acrylic one-pack ink, and then adding “infrared absorbent epolite 1151 (λmax = 1072 nm)” Was used to form a transparent red translucent decorative layer, and then a deposition anchor layer was formed by a gravure printing method using a urethane-based two-component curable ink. After heat treatment at 180 ° C. × 30 seconds / m, a chromium metal layer having a thickness of 600 ± 50 ° was formed by a vacuum evaporation method. Next, a black opaque layer, a light-transmitting layer (white layer) containing no infrared absorber, and an adhesive layer were formed by gravure printing using a vinyl chloride-based one-component ink to prepare a transfer foil. This was thermally laminated with a transparent acrylonitrile butadiene styrene sheet to obtain a laminated sheet.
[0034]
This laminated sheet was cut into an appropriate size by a Thomson mold, and then primarily formed into an embossed shape by a pressurized press method to provide positioning guide holes. The acrylonitrile-butadiene styrene sheet surface of this laminated sheet is disposed so as to be positioned at the gate portion, and the acrylonitrile-butadiene styrene sheet resin “Toyolac 920” manufactured by Toray is melted, injected, cooled and individualized to form a decorative sheet and a molding resin. Were integrated to obtain a decorative molded product.
[0035]
The decorative molded product was removed with a YAG laser (λ = 1064 nm) so that the white layer was exposed from the release layer to partially form a display design. A UV-curable overcoat agent was applied thereto and UV-cured, and then an unnecessary sheet portion was removed by a mold pressing method to obtain a desired decorative product.
[0036]
[Effects of the present invention]
The present invention provides a method for producing a decorative article, comprising: forming a translucent decorative layer containing an infrared absorbent on a substrate; and patterning the translucent decorative layer by irradiating an infrared laser beam. It is. Further, the present invention is the method for producing a decorative article, wherein the infrared laser beam is a YAG laser beam, and the infrared absorber is an immonium-based compound.
[0037]
Therefore, even when the decorative layer is a light-transmissive decorative layer having a thin tint color or the like, the laser light does not transmit and diffuse. As a result, there is an effect that the translucent decorative layer can be patterned without adversely affecting the color tone.
[Brief description of the drawings]
FIG. 1 is a plan view showing an embodiment of a decorative article according to the present invention.
FIG. 2 is a cross-sectional view showing one embodiment of a decorative article according to the present invention.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 base material 2 translucent decorative layer 3 containing infrared absorbing agent 3 luminous layer 4 shading decorative layer 5 decorative

Claims (3)

基材上に赤外線吸収剤を含む透光性加飾層を形成し、赤外線レーザー光を照射して該透光性加飾層を部分的に除去することにより、該透光性加飾層に抜きパターンを形成することを特徴とする加飾物の製造方法。A translucent decorative layer containing an infrared absorbent is formed on a substrate, and the translucent decorative layer is partially removed by irradiating an infrared laser beam to the translucent decorative layer. A method for manufacturing a decorative article, comprising forming a blank pattern. 前記赤外線レーザー光がYAGレーザー光であり、赤外線吸収剤がイモニウム系化合物である請求項1に記載の加飾物の製造方法。The method for producing a decorative article according to claim 1, wherein the infrared laser light is a YAG laser light, and the infrared absorbent is an immonium-based compound. 前記請求項1または請求項2の赤外線吸収剤を含む透光性加飾層の抜きパターン化により、赤外線吸収剤を含まない透光性加飾層が露出された加飾物。A decorative article in which the light-transmitting decorative layer containing no infrared absorber is exposed by patterning the light-transmitting decorative layer containing the infrared absorber according to claim 1 or 2.
JP2003093777A 2003-03-31 2003-03-31 Manufacturing method for decorating article Pending JP2004299200A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007038594A (en) * 2005-08-05 2007-02-15 Taisei Lamick Co Ltd Laminated film for packaging, and its manufacturing method
JP2016087618A (en) * 2014-10-30 2016-05-23 トリニティ工業株式会社 Decorative component and manufacturing method of the same
WO2020196904A1 (en) * 2019-03-28 2020-10-01 大日本印刷株式会社 Decorative sheet, display device having decorative sheet, and method for manufacturing decorative sheet
JP2021043280A (en) * 2019-09-09 2021-03-18 大日本印刷株式会社 Decorative sheet, display device with decorative sheet, and manufacturing method for decorative sheet
JP7122490B1 (en) * 2020-10-22 2022-08-19 三菱エンジニアリングプラスチックス株式会社 Resin composition, molded article, use of resin composition, kit, laser-welded article, and method for manufacturing laser-welded article

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007038594A (en) * 2005-08-05 2007-02-15 Taisei Lamick Co Ltd Laminated film for packaging, and its manufacturing method
JP2016087618A (en) * 2014-10-30 2016-05-23 トリニティ工業株式会社 Decorative component and manufacturing method of the same
WO2020196904A1 (en) * 2019-03-28 2020-10-01 大日本印刷株式会社 Decorative sheet, display device having decorative sheet, and method for manufacturing decorative sheet
JPWO2020196904A1 (en) * 2019-03-28 2021-09-13 大日本印刷株式会社 Decorative sheet, display device with decorative sheet, and manufacturing method of decorative sheet
JP2021043280A (en) * 2019-09-09 2021-03-18 大日本印刷株式会社 Decorative sheet, display device with decorative sheet, and manufacturing method for decorative sheet
JP7365576B2 (en) 2019-09-09 2023-10-20 大日本印刷株式会社 Decorative sheet, display device with decorative sheet, and method for manufacturing the decorative sheet
JP7122490B1 (en) * 2020-10-22 2022-08-19 三菱エンジニアリングプラスチックス株式会社 Resin composition, molded article, use of resin composition, kit, laser-welded article, and method for manufacturing laser-welded article

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