JP2014509958A - 着色された磁化可能なセキュリティ要素 - Google Patents
着色された磁化可能なセキュリティ要素 Download PDFInfo
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Abstract
Description
存在するフレーク状の効果顔料が、押出プロセス中の磁場の印加によって、磁場の力線に沿って配向することも可能である。三次元の外観を有する顔料のパターンは、ここで同様に形成することができ、続いてポリマー材料の硬化によって固化される。こうして得られたポリマープレートまたはフィルムは、上述した通り、NIR領域において低吸収を呈するにすぎない、着色された、可視の、磁気的に誘導された三次元パターンを有する。
スクリーン印刷用の市販の印刷ビヒクル(Schmid−RhynerからのWessco 36.30.30)を、印刷用インクの重量を基準として、15重量%の金色の磁性顔料(Merck KGaA、酸化アルミニウム基材上のマグヘマイト)と勢いよく混合し、市販のPETフィルム(780〜1100nmのNIR領域中で吸収なし)上に、61−64スクリーンを使用するスクリーン印刷法によって、固化後に乾燥層厚さ15μmのコーティングが達成されるように、コーティングした。コーティングは、視野角とは無関係の、日光下で光沢のある、強力な金色を有する。PETフィルムの底面への磁石の適用によって、コーティングの湿潤状態で磁気的に誘導される三次元パターンが生成されることを可能にする。UV/VIS透過および反射スペクトルを記録し、NIR領域での吸収を、そこから計算する。全NIR領域にわたって、10%未満の吸収が生じる。
バーコーティング法用の市販の印刷ビヒクル(ProllからのMZ 093ラッカー)を、バーコーター(250μmフィルムアプリケーター)を用いて、顔料含有量10重量%(例1による顔料)および乾燥層厚さ36μmで市販のPETフィルム(例1を参照)に塗付する。光学的および磁気的特性は、例1の光学的および磁気的特性にほぼ匹敵するが、NIR領域での吸収は、最大約20%の値まで変化し、それは総体的に、全NIR領域にわたって、おおよそ一定のままである。
例2を繰り返すが、乾燥層厚さ81μmを、500μmフィルムアプリケーターを使用して達成する点が異なる。光学的および磁気的特性は、この場合も例1および2で達成された結果にほぼ相当するが、NIR領域での吸収は、最大約35%の値まで変化し、それは総体的に、全NIR領域にわたって、おおよそ一定のままである。
Claims (20)
- 基材上の固体コーティング、またはポリマー層からなり、コーティングまたはポリマー層が、いずれの場合にも、非金属で磁化可能でない支持体および少なくとも1種の磁化可能な酸化鉄含有層を有するフレーク状の効果顔料を含む、着色された磁化可能なセキュリティ要素であって、NIR領域(780〜1100nm)における最大吸収率が40%である、セキュリティ要素。
- コーティングまたはポリマー層が、いずれの場合にも0.1〜100μmの範囲の層厚さを有することを特徴とする、請求項1に記載のセキュリティ要素。
- コーティングまたはポリマー層の層厚さが、2〜35μmの範囲にあることを特徴とする、請求項1または2に記載のセキュリティ要素。
- NIR領域における最大吸収率が20%であることを特徴とする、請求項1から3の何れかに記載のセキュリティ要素。
- フレーク状の効果顔料が、コーティングまたはポリマー層の重量を基準として、1〜40重量%の濃度でコーティングまたはポリマー層中に存在することを特徴とする、請求項1から4の何れかに記載のセキュリティ要素。
- フレーク状の効果顔料の濃度が、5〜25重量%であることを特徴とする、請求項5に記載のセキュリティ要素。
- フレーク状の効果顔料が金属層を有さないことを特徴とする、請求項1から6の何れかに記載のセキュリティ要素。
- フレーク状の効果顔料の磁化可能な酸化鉄含有層が、γ−Fe2O3、γ−FeOOH、Fe3O4またはこれらの2つ以上の混合物からなる、あるいはいずれの場合にも、層の重量を基準として、少なくとも80重量%の量でこれらを含むことを特徴とする、請求項1から7の何れかに記載のセキュリティ要素。
- 垂直に見たときにフレーク状の効果顔料によって生成される少なくとも1つの有彩色を有することを特徴とする、請求項1から8の何れかに記載のセキュリティ要素。
- 垂直以外の視野角から見たときに、フレーク状の効果顔料によって生成される垂直に見たときと異なる色を有することを特徴とする、請求項1から9の何れかに記載のセキュリティ要素。
- フレーク状の効果顔料によって形成される三次元パターンを有することを特徴とする、請求項1から10の何れかに記載のセキュリティ要素。
- 非金属で磁化可能でない支持体および少なくとも1種の磁化可能な酸化鉄含有層を有するフレーク状の効果顔料が、少なくとも1種の結合剤または少なくとも1種のポリマー成分と混合され、コーティングとして基材に付けられ、固化されるかまたは押出によってポリマープレートまたはポリマーフィルムに変換されることを特徴とする、請求項1から11の何れかに記載の着色された磁化可能なセキュリティ要素の製造方法。
- 基材にコーティングを付けることが、コーティング法または印刷法によって実行されることを特徴とする、請求項12に記載の方法。
- 基材上のコーティング中のフレーク状の効果顔料が、磁場の作用下でまだ固化していない状態のコーティング中で、基材面に対して傾斜したまたは垂直な配置に配向し、コーティングが、顔料の配向を維持しながら固化することを特徴とする、請求項12または13に記載の方法。
- 軟化したポリマー成分中のフレーク状の効果顔料が、磁場の作用によって配向し、ポリマープレートまたはポリマーフィルムの形成を伴うポリマー成分の固化によってこの配向に保たれることを特徴とする、請求項12に記載の方法。
- セキュリティ要素によって保護される製品の表面のうちの1つの上に位置するセキュリティ要素が、磁気センサーを通過し、磁気センサーが、フレーク状の効果顔料によって生成されるセキュリティ要素における磁気信号の強さおよび/または位置を登録し、その顔料によって生成される二次元または三次元パターンの形状および/または場所を任意選択で追加的に登録し、これらを第1の基準と比較し、セキュリティ要素と基準の特徴が対応した場合、前記製品が、第1のステップにおいて暫定的に有効であると見なされ、第2のステップにおいて、セキュリティ要素が、赤外線センサーを通過し、780〜1100nm(NIR)の波長範囲におけるセキュリティ要素の吸収が計測されて第2の基準と比較され、前記波長範囲内における最大吸収率が第2の基準に対応し、且つ最大でも40%の場合に、セキュリティ要素が有効であると見なされることを特徴とする、請求項1から11の何れかに記載のセキュリティ要素の検証のための方法。
- 検証の第1および第2のステップが、それぞれセキュリティ要素の同じ箇所で実行されることを特徴とする、請求項16に記載の方法。
- さらに前記製品の表面上のセキュリティ要素の場所が確認されることを特徴とする、請求項16または17に記載の方法。
- 請求項1から11の何れかに記載のセキュリティ要素を含有するセキュリティ製品。
- 製品の保護および/または検証のための、請求項1から11の何れかに記載のセキュリティ要素の使用。
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CN104867403B (zh) * | 2015-06-24 | 2019-06-28 | 山东泰宝防伪技术产品有限公司 | 磁诱导显影防伪标识的制备工艺及制得的防伪标识 |
DE102016007066A1 (de) | 2016-06-08 | 2017-12-14 | Giesecke+Devrient Currency Technology Gmbh | Verfahren zur Absicherung von Wertdokumenten mit gedächtnisbehaftetem Merkmalssystem |
US11427026B1 (en) * | 2021-03-23 | 2022-08-30 | Viavi Solutions Inc. | Orienting magnetic flakes within a binder layer |
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EP2655520A1 (de) | 2013-10-30 |
CN103261333A (zh) | 2013-08-21 |
JP6139411B2 (ja) | 2017-05-31 |
US20130270344A1 (en) | 2013-10-17 |
WO2012084143A1 (de) | 2012-06-28 |
EP2655520B1 (de) | 2016-02-24 |
KR20130132930A (ko) | 2013-12-05 |
AU2011348549A1 (en) | 2013-08-15 |
CN103261333B (zh) | 2015-01-14 |
BR112013015427A2 (pt) | 2016-09-20 |
MX2013006604A (es) | 2013-07-29 |
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