JP2007241283A - 光学的可変接着剤を組み込んだセキュリティ・デバイス - Google Patents
光学的可変接着剤を組み込んだセキュリティ・デバイス Download PDFInfo
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- JP2007241283A JP2007241283A JP2007053742A JP2007053742A JP2007241283A JP 2007241283 A JP2007241283 A JP 2007241283A JP 2007053742 A JP2007053742 A JP 2007053742A JP 2007053742 A JP2007053742 A JP 2007053742A JP 2007241283 A JP2007241283 A JP 2007241283A
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- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
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Abstract
【解決手段】光学効果を実現する構造は、接着剤によって互いにホット・スタンプされた第1および第2の基板を備える。接着剤は、第1の基板を通して検出可能な光学効果を実現する複数の粒子がその中または上に分散されているエネルギー活性化結合剤を含む。
【選択図】図2
Description
a)少なくとも第1の光学効果を有する第1の基板を用意するステップと、
b)光学効果粒子をその中または上に有するキャリア・ビヒクルを第1の基板に塗付するステップと、ここでこの粒子は、第1の基板を通して検出可能な第2の光学効果を実現するものであり、
c)ホット・スタンプにおいてキャリア・ビヒクルがただ接着剤としてだけ使用されるように、塗布された第1の基板を第2の基板または物品にホット・スタンプするステップと、を含む。
を実現することができる。アルミニウムのパターン形成は一プロセス・ステップで、真空中で、インラインで行われるので、オイル・アブレーションは、最上のdemet方法である。光学的可変接着剤は、1つの接着剤層104が色シフト顔料105を含みもう1つの接着剤層119が隠し材料118を含む2つの個別接着剤層のうちの少なくとも1つを備える。これはセキュリティ・スレッドを形成する。この場合、PET層の厚さは各々約5〜10ミクロンであるので、全体的な厚さは20ミクロン以下である。銀行券のスタックで、スタックの一端が他端よりも厚くないために、この厚さ制限は、セキュリティ・スレッドにとって必要である。
のある10ミクロン角顔料と、中心に記号$のある30ミクロン角顔料である。プレス速度は、各々について20フィート/分であった。
光学的可変顔料(OVP)を市販のホット・スタンプ接着剤に混合して、実験が行われた。ホット・スタンプ接着剤の厚さは、3μmから10μmであり、好ましくは3〜7μmの範囲であった。
記号および$記号の付いた隠しフレークは、第2の接着剤層中の青から赤の色シフト・フレークの上の接着剤材料の中に配置されている。ここで、ポーカ・チップには、色シフト・フレークの背景にミロのビーナスのホログラフ・イメージがある。隠しフレークは、100倍の拡大で見ることができるが、拡大無しでは見えない。この実施形態は、特殊効果フレークを含む接着剤を使用して、色シフト、ホログラフ効果および隠し記号を組み合わせる。
102、216 不透明Alコーティング(パターン形成Al層)
102a demetAl層
102b 反射層
104 光学的可変接着剤
105 光学的可変フレーク
106、212 樹脂層
108 剥離層
66、110、112、212、222 基板
114 高屈折率層
118、245 隠しフレーク
119 接着剤
130 第1の塗膜(光学的可変接着剤)
131 第2の塗膜(光学的可変接着剤)
214 Alで覆われない領域
220a 反射層
220b 誘電体層
220c 吸収層
223 光学的可変色シフト箔
230 ホット・スタンプ接着剤
235 色シフト・フレーク
Claims (21)
- 第1の基板と、接着剤だけで前記第1の基板に付着された第2の基板とを備えた光学効果を実現する構造であって、前記接着剤が、前記第1の基板を通して検出可能な前記光学効果を実現する複数の粒子がその中または上に分散されているエネルギー活性化結合剤を含む構造。
- 前記第1の基板が、浮彫構造を有し、さらに、前記複数の粒子によって実現される前記光学効果が、回折構造を通して外部から目に見えて検出可能である、請求項1に記載の構造。
- 前記浮彫構造が、ホログラム、デメタライズド・ホログラム、キネグラム、ゼロ次回折構造、および回折格子構造のうちの1つである回折構造である、請求項2に記載の構造。
- 前記第1の基板が、前記回折構造と前記接着剤の間に配置された高屈折率層を有する、請求項2に記載の構造。
- 前記第1および第2の基板のうちの1つが、薄膜干渉スタック、反射塗膜、および高屈折率塗膜のうちの少なくとも1つおよびその上のパターン形成された剥離層を有する、請求項1に記載の構造。
- 前記エネルギー活性化結合剤が、ホット・スタンプ、紫外光、熱、および電子ビームのうちの1つで活性化される、請求項1に記載の光学構造。
- 前記エネルギー活性化結合剤が、ポリメタクリレート、ポリアクリレート、ポリアミド、ニトロセルロース、アルキド樹脂、ポリビニル・アルコール、ポリビニル・アセテート、およびポリウレタンのグループから選択される、請求項1に記載の構造。
- 前記複数の粒子で実現される前記効果が、人の目、顕微鏡、磁気センサ、UV光、およびIR光のうちの1つを使用して検出可能である、請求項1に記載の構造。
- 前記複数の粒子が、蛍光材料粒子、磁気材料粒子、染料粒子、アップ・コンバージョン顔料、ナノ粒子、および透明導電性粒子のうちの少なくとも1つを含み、フレークの長さは少なくとも2ミクロンである、請求項1に記載の構造。
- 前記複数の粒子は、少なくとも2ミクロンの長さを有するフレークであり、さらに、前記フレークは、光学的可変フレーク、薄膜光干渉フレーク、回折フレーク、反射フレーク、光吸収フレーク、隠しフレーク、記号または表示の付いたフレーク、形が一様なフレーク、磁気フレーク、金属・誘電体フレーク、完全誘電体フレーク、マイカ・ベースのフレーク、および液晶ベースのフレークのうちの少なくとも1つである、請求項1に記載の構造。
- 前記第1および第2の基板のうちの1つが、光透過基板、本質的に透明な基板、PET基板、高屈折率塗膜、保護塗膜、剥離塗膜、および紙片のうちの1つである、請求項1に記載の光学構造。
- 前記第1の基板が、前記接着剤によって前記第2の基板に結合されない少なくとも1つの領域を有する、請求項1に記載の構造。
- 前記接着剤が、第1および第2の接着剤部分層を含む、請求項1に記載の構造。
- 前記接着剤が、1つのサンプルから別のサンプルへのΔEの色変化を有し、ΔEが約5.0以下である、請求項1に記載の構造。
- 前記構造が、セキュリティ・スレッドを形成する、請求項1に記載の構造。
- 請求項1に記載の構造を形成する方法であって、
a.エネルギー活性化結合剤をその上に有する第1の基板を用意するステップと、ここで前記エネルギー活性化結合剤はその中または上に分散された、前記第1の基板を通して検出可能な効果を実現する複数の粒子を有しており、
b.前記第1の基板を第2の基板に接着剤をその間に加えることなしに隣接して配置し、そのため、前記エネルギー活性化結合剤が前記第1と第2の基板の間に配置されるステップと、
c.UV光、電子ビーム放射、熱、およびホット・スタンプのうちの1つを応用して、前記エネルギー活性化結合剤を硬化させるステップと、を含む方法。 - ステップ(b)で、前記第2の基板の少なくとも1つの領域が、前記エネルギー活性化結合剤で覆われず、そのため、ステップ(c)で前記領域が前記第1の基板に結合されない、請求項16に記載の方法。
- 前記第1の基板は、ステップ(a)で、第1の粒子がその上または中に分散されている第1のエネルギー活性化結合剤で覆われ、次に、第2の粒子がその上または中に分散されている第2のエネルギー活性化結合剤で覆われ、前記第1の粒子が前記第2の粒子と異なる、請求項16に記載の方法。
- ステップ(a)で、前記エネルギー活性化結合剤が、最初に、前記第1の基板に塗られ、次に、前記粒子が前記エネルギー活性化結合剤の表面に加えられる、請求項16に記載の方法。
- ステップ(a)で、前記加えられた粒子が、より多くの量の前記エネルギー活性化結合剤で覆われる、請求項19に記載の方法。
- 光学効果を実現する物品を形成する方法であって、
a.少なくとも第1の光学効果を有する第1の基板を用意するステップと、
b.光学効果粒子をその中または上に有するキャリア・ビヒクルを前記第1の基板に塗付するステップと、ここで前記粒子は、前記第1の基板を通して検出可能な第2の光学効果を実現するものであり、
c.ホット・スタンプにおいて前記キャリア・ビヒクルがただ接着剤としてだけ使用されるように、前記塗布された第1の基板を第2の基板または物品にホット・スタンプするステップと、を含む方法。
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JP2009126977A (ja) * | 2007-11-26 | 2009-06-11 | Jds Uniphase Corp | 内密セキュリティ用途向け顔料フレークの周囲のフレームまたは境界の提供 |
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JP2012121171A (ja) * | 2010-12-06 | 2012-06-28 | Dainippon Printing Co Ltd | 微粒子含有シートの製造方法 |
JP2015529578A (ja) * | 2012-07-12 | 2015-10-08 | エントラスト データカード コーポレイション | アブレーションされた箔要素を有する安全な識別ドキュメント |
JP2015039832A (ja) * | 2013-08-22 | 2015-03-02 | 独立行政法人 国立印刷局 | 偽造防止形成体 |
JP2018063438A (ja) * | 2013-09-13 | 2018-04-19 | コーニング インコーポレイテッド | 多層光学フィルムを有する低着色耐擦傷性物品 |
JP2015044409A (ja) * | 2014-09-29 | 2015-03-12 | 大日本印刷株式会社 | 微粒子含有シートの製造方法 |
JP2015166195A (ja) * | 2015-07-02 | 2015-09-24 | 大日本印刷株式会社 | 微粒子含有シートの製造方法 |
JP2022502688A (ja) * | 2018-08-13 | 2022-01-11 | クレイン アンド カンパニー、 インコーポレイテッド | レンズレスマイクロ光学フィルム |
JP7521759B2 (ja) | 2018-08-13 | 2024-07-24 | クレイン アンド カンパニー、 インコーポレイテッド | レンズレスマイクロ光学フィルム |
Also Published As
Publication number | Publication date |
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BRPI0706331B1 (pt) | 2023-01-10 |
BRPI0706331A (pt) | 2008-10-28 |
CA2580321A1 (en) | 2007-09-06 |
AU2007200932A1 (en) | 2007-09-20 |
KR101388615B1 (ko) | 2014-04-29 |
CN101058285B (zh) | 2010-12-01 |
AU2007200932B2 (en) | 2013-09-26 |
US20070206249A1 (en) | 2007-09-06 |
TWI474934B (zh) | 2015-03-01 |
EP1832439B1 (en) | 2014-04-23 |
US8164810B2 (en) | 2012-04-24 |
TW200744869A (en) | 2007-12-16 |
JP5686495B2 (ja) | 2015-03-18 |
KR20070091565A (ko) | 2007-09-11 |
CN101058285A (zh) | 2007-10-24 |
EP1832439A1 (en) | 2007-09-12 |
CA2580321C (en) | 2014-11-04 |
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