JP7234471B2 - 効果層を生成するための方法 - Google Patents
効果層を生成するための方法 Download PDFInfo
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- JP7234471B2 JP7234471B2 JP2018562240A JP2018562240A JP7234471B2 JP 7234471 B2 JP7234471 B2 JP 7234471B2 JP 2018562240 A JP2018562240 A JP 2018562240A JP 2018562240 A JP2018562240 A JP 2018562240A JP 7234471 B2 JP7234471 B2 JP 7234471B2
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Description
[001]本発明は、磁気配向された小板状磁性顔料粒子若しくは磁化可能顔料粒子を含む光学効果層(OEL)を生成するための方法の分野に関する。特に、本発明は、小板状磁性顔料粒子若しくは磁化可能顔料粒子を含むコーティング層に1つ又は複数の印を磁気転写してOELを生成するための方法、及びセキュリティ文書又はセキュリティ物品の偽造防止手段として、且つ装飾目的としての前記OELの使用を提供する。
[002]当技術分野においては、例えばセキュリティ文書の分野で、配向磁性顔料粒子若しくは磁化可能顔料粒子、特に光学可変磁性顔料粒子若しくは磁化可能顔料粒子を含むインク、組成物、コーティング、又は層を用いてセキュリティ要素を生成することが公知である。配向磁性顔料粒子若しくは磁化可能顔料粒子を含むコーティング又は層は、例えば、米国特許第2,570,856号、米国特許第3,676,273号、米国特許第3,791,864号、米国特許第5,630,877号、及び米国特許第5,364,689号に開示されている。配向磁性変色顔料粒子を含むことによって光学効果を特に示し、セキュリティ文書の保護に有用なコーティング又は層が、国際公開第2002/090002A2号及び国際公開第2005/002866A1号に開示されている。
[012]したがって、本発明の目的は、上記の先行技術の欠点を克服することである。これは、1つ又は複数の印を示す光学効果層(OEL)を基板(x10)に生成するための方法であって、
a)基板(x10)表面に、i)小板状磁性顔料粒子又は磁化可能顔料粒子とii)バインダ材料とを含む、第1の状態にあるコーティング組成物を塗布して、前記基板(x10)にコーティング層(x20)を形成するステップと、
b)コーティング層(x20)を有する基板(x10)と1つ又は複数の凹印又は1つ又は複数の凸印とを備えたアセンブリ(x00)を形成するステップであって、コーティング層(x20)を有する基板(x10)が1つ又は複数の凹印又は1つ又は複数の凸印の上に配置され、1つ又は複数の凹印が、1つ又は複数の凹印の形の1つ又は複数の空隙(x52)を備える軟磁性板(x51)から成り、軟磁性板(x51)が、高透磁率の1つ又は複数の金属、合金、又は化合物から作られるか、非磁性材料に分散された約25重量%~約95重量%の軟磁性粒子を含む複合材料から作られ、重量パーセントが複合材料の総重量に基づき、1つ又は複数の凸印が、非磁性ホルダ(x40)に配置され又は取り付けられた1つ又は複数の印(x52)を備える構成(x30)から成り、前記印が、高透磁率の1つ又は複数の金属、合金、又は化合物から作られるか、非磁性材料に分散された約25重量%~約95重量%の軟磁性粒子を含む複合材料から作られ、重量パーセントが複合材料の総重量に基づくステップと、
c)コーティング層(x20)を有する基板(120)とステップb)により得られた1つ又は複数の凹印又は1つ又は複数の凸印とを備えたアセンブリ(x00)を、静磁界発生装置(x60)の不均一磁界に通して移動させて、小板状磁性顔料粒子又は磁化可能顔料粒子の少なくとも一部を二軸配向させるステップと、
d)コーティング組成物を第2の状態に固化させて、小板状磁性顔料粒子又は磁化可能顔料粒子を採用された位置及び配向に固定するステップとを含む方法を提供することによって実現される。
(定義)
[020]以下の定義を用いることによって、本明細書及び特許請求の範囲に記載の用語の意味を解釈するものとする。
a)基板表面に、i)本明細書に記載の小板状磁性顔料粒子又は磁化可能顔料粒子とii)本明細書に記載のバインダ材料とを含む、第1の状態にあるコーティング組成物を塗布して、前記基板にコーティング層を形成するステップと、
b)コーティング層を有する基板と1つ又は複数の凹印又は1つ又は複数の凸印とを備えたアセンブリを形成するステップであって、コーティング層を有する基板が1つ又は複数の凹印又は1つ又は複数の凸印の上に配置され、1つ又は複数の凹印が、1つ又は複数の印の形の1つ又は複数の空隙を備える軟磁性板から成り、軟磁性板が、高透磁率の1つ又は複数の金属、合金、又は化合物から作られるか、非磁性材料に分散された約25重量%~約95重量%の軟磁性粒子を含む複合材料から作られ、重量パーセントが複合材料の総重量に基づき、1つ又は複数の凸印が、非磁性ホルダに配置され又は取り付けられた1つ又は複数の印を備える構成から成り、前記印が、高透磁率の1つ又は複数の金属、合金、又は化合物から作られるか、非磁性材料に分散された約25重量%~約95重量%の軟磁性粒子を含む複合材料から作られ、重量パーセントが複合材料の総重量に基づくステップと、
c)コーティング層を有する基板とステップb)により得られた1つ又は複数の凹印又は1つ又は複数の凸印とを備えたアセンブリを、静磁界発生装置の不均一磁界に通して移動させて、小板状磁性顔料粒子又は磁化可能顔料粒子の少なくとも一部を二軸配向させるステップと、
d)コーティング組成物を第2の状態に固化させて、小板状磁性顔料粒子又は磁化可能顔料粒子を採用された位置及び配向に固定するステップとを含む。
本明細書に記載の1つ又は複数の印の形の1つ又は複数の空隙は、本明細書に記載の高透磁率の1つ又は複数の金属、合金、又は化合物から作られる(「軟磁性金属板」と称する)か、或いは本明細書に記載の非磁性材料に分散された軟磁性粒子を含む複合材料から作られる(以下「軟磁性複合材料板」と称する)。
光源:OELの各側から45°に位置決めされた2つの白色LEDアレイ光源(THORLAB LIU004)
カメラ:USBインターフェースを有し、解像度2590画素×1942画素のBaslerのカラーカメラ(acA2500-14uc)
対物レンズ:テレセントリックレンズ
フリーソフトウェア(Fiji)を用いてカラー画像を白黒画像に変換した。
[0129]a)コーティング層(420)を有する基板(410)と、b)POMから作られた非磁性ホルダ(440)及び「50」の形の空隙(451)を備えるニッケル箔(450)(すなわち軟磁性金属板)の形態の凹印を備える構成(430)とを備えたアセンブリ(400)を、線形永久磁石ハルバッハ配列(460)に沿って移動させることにより、印を磁気転写した。ニッケル箔(450)は接着剤により非磁性ホルダ(440)に取り付けた。
[0135]a)コーティング層(520)を有する基板(510)と、b)POMから作られた非磁性ホルダ(540)及び「50」の形の空隙(551)を備えるニッケル箔(550)(すなわち軟磁性金属板)の形態の凹印を備える構成(530)とを備えたアセンブリ(500)を、欧州特許第2155498号の図5に記載されたものと類似の磁界発生装置(560)の上に配置することにより、印を磁気転写した。ニッケル箔(550)は接着剤により非磁性ホルダ(540)に取り付けた。
[0140]a)コーティング層(620)を有する基板(610)と、b)「100」の形の空隙(651)を備えるニッケル箔(650)(すなわち軟磁性金属板)の形態の凹印とを備えたアセンブリ(600)を、線形永久磁石ハルバッハ配列(660)に沿って移動させることにより、印を磁気転写した。
[0146]a)コーティング層(720)を有する基板(710)と、b)POMから作られた非磁性ホルダ(740)及びニッケルから作られ、「100」の形を有する凸印(752)を備える構成(730)とを備えたアセンブリ(700)を、線形永久磁石ハルバッハ配列(760)に沿って移動させることにより、印を磁気転写した。凸印(752)は接着剤により非磁性ホルダ(740)に取り付けた。
[0152]a)コーティング層(820)を有する基板(810)と、b)円形の空隙(851)を備える軟磁性複合材料板(850)の形態の凹印を備える構成(830)とを備えたアセンブリ(800)を、線形永久磁石ハルバッハ配列(860)に沿って移動させることにより、印を磁気転写した。軟磁性複合材料板(850)は接着剤により非磁性ホルダ(840)に取り付けた。
[0162]a)コーティング層(920)を有する基板(910)と、b)POMから作られた非磁性ホルダ(940)及び「ABC」の文字の形の空隙(951)を備える軟磁性複合材料板(950)の形態の凹印を備える構成(930)とを備えたアセンブリ(900)を、磁界発生装置(960)内へ移動させることにより、「ABC」の文字の形の印を磁気転写した。軟磁性複合材料板(950)は接着剤により非磁性ホルダ(940)に取り付けた。
[0173]a)コーティング層(1020)を有する基板(1010)と、b)POMから作られた非磁性ホルダ及び「ABC」の文字の形の空隙(1051)を備える軟磁性複合材料板(1050)の形態の凹印を備える構成(1030)とを備えたアセンブリ(1000)を、磁界発生装置(1060)内へ移動させることにより、「ABC」の文字の形の印を磁気転写した。軟磁性複合材料板(1050)は接着剤により非磁性ホルダに取り付けた。
[0184]a)コーティング層(1120)を有する基板(1110)と、b)POMから作られた非磁性ホルダ(図示せず)及び「ABC」の文字の形の空隙(1151)を備える軟磁性複合材料板(1150)の形態の凹印を備える構成(1130)とを備えたアセンブリ(1100)を、磁界発生装置(1160)内へ移動させることにより、「ABC」の文字の形の印を磁気転写した。軟磁性複合材料板(1150)は接着剤により非磁性ホルダ(1140)に取り付けた。
[0195]a)コーティング層(1220)を有する基板(1210)と、b)POMから作られた非磁性ホルダ(図示せず)及び「ABC」の文字の形の空隙(1251)を備える軟磁性複合材料板(1250)の形態の凹印を備える構成(1230)とを備えたアセンブリ(1200)を、磁界発生装置(1260)内へ移動させることにより、「ABC」の文字の形の印を磁気転写した。軟磁性複合材料板(1250)は接着剤により非磁性ホルダに取り付けた。
Claims (10)
- 1つ又は複数の印を示す光学効果層(OEL)を基板(x10)に生成するための方法であって、
a)基板(x10)表面に、i)小板状磁性顔料粒子又は磁化可能顔料粒子とii)バインダ材料とを含む、第1の状態にあるコーティング組成物を塗布して、前記基板(x10)にコーティング層(x20)を形成するステップと、
b)前記コーティング層(x20)を有する前記基板(x10)と1つ又は複数の凹印又は1つ又は複数の凸印とを備えたアセンブリ(x00)を形成するステップであって、前記コーティング層(x20)を有する前記基板(x10)が前記1つ又は複数の凹印又は1つ又は複数の凸印の上に配置され、
前記1つ又は複数の凹印が、前記1つ又は複数の印の形の1つ又は複数の空隙(x51)を備える軟磁性板(x50)から成り、前記軟磁性板(x50)が、非磁性材料に分散された25重量%~95重量%の軟磁性粒子を含む複合材料から作られ、重量パーセントが前記複合材料の総重量に基づき、
前記1つ又は複数の凸印が、非磁性ホルダ(x40)に配置され又は取り付けられた1つ又は複数の印(x52)を備える構成(x30)から成り、前記印が、非磁性材料に分散された25重量%~95重量%の軟磁性粒子を含む複合材料から作られ、重量パーセントが前記複合材料の総重量に基づくステップと、
c)前記コーティング層(x20)を有する前記基板(x10)とステップb)により得られた前記1つ又は複数の凹印又は1つ又は複数の凸印とを備えた前記アセンブリ(x00)を、静磁界発生装置(x60)の不均一磁界に通して移動させて、前記小板状磁性顔料粒子又は磁化可能顔料粒子の少なくとも一部を二軸配向させるステップと、
d)前記コーティング組成物を第2の状態に固化させて、前記小板状磁性顔料粒子又は磁化可能顔料粒子を採用された位置及び配向に固定するステップとを含み、
前記コーティング組成物を固化する前記ステップd)が、前記ステップc)と一部同時に実行される、方法。 - 前記1つ又は複数の凹印が構成(x30)から成り、前記構成(x30)が、非磁性ホルダ(x40)と前記1つ又は複数の印の形の1つ又は複数の空隙(x51)を備える前記軟磁性板(x50)とを備える、請求項1に記載の方法。
- 前記コーティング層(x20)が前記アセンブリ(x00)の最上層である、請求項1又は2に記載の方法。
- 前記複合材料の前記非磁性材料が、
ポリアミド、コポリアミド、ポリフタルイミド、ポリオレフィン、ポリエステル、ポリテトラフルオロエチレン、ポリアクリレート、ポリメタクリレート、ポリイミド、ポリエーテルイミド、ポリエーテルエーテルケトン、ポリアリールエーテルケトン、ポリフェニレンスルファイド、液晶ポリマー、ポリカーボネート、及びこれらの混合物から成る群から選択される熱可塑性材料、若しくは
エポキシ樹脂、フェノール樹脂、ポリイミド樹脂、シリコン樹脂、及びこれらの混合物から成る群から選択される熱硬化性材料、
を含む、又はこれらから成るポリマー母材である、請求項1~3のいずれか一項に記載の方法。 - 前記軟磁性粒子が、カルボニル鉄、カルボニルニッケル、コバルト、及びこれらの組合せから成る群から選択される、請求項1~4のいずれか一項に記載の方法。
- 前記軟磁性粒子が0.5μm~100μmのd50を有する、請求項1~5のいずれか一項に記載の方法。
- 前記磁界発生装置が線形永久磁石ハルバッハ配列である、請求項1~6のいずれか一項に記載の方法。
- 前記小板状磁性顔料粒子又は磁化可能顔料粒子が、小板状磁性薄膜干渉顔料粒子、小板状磁性コレステリック液晶顔料粒子、磁性材料を含む小板状干渉被覆顔料粒子、及びこれらの2つ以上の混合物から成る群から選択される小板状光学可変磁性顔料粒子又は磁化可能顔料粒子である、請求項1~7のいずれか一項に記載の方法。
- 前記基板が、紙若しくはその他の繊維材料、紙含有材料、ガラス、金属、セラミック、プラスチック及びポリマー、金属化プラスチック若しくはポリマー、複合材料、及びこれらの混合物又は組合せから成る群から選択される、請求項1~8のいずれか一項に記載の方法。
- a)セキュリティ文書又は装飾要素若しくは物体を用意するステップと、
b)請求項1~9のいずれか一項に記載の方法による光学効果層を、前記セキュリティ文書又は装飾要素若しくは物体に含まれるように用意するステップとを含む、セキュリティ文書又は装飾要素若しくは物体を製造する方法。
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CA3025427A1 (en) | 2018-02-22 |
KR102413527B1 (ko) | 2022-06-27 |
RS62088B1 (sr) | 2021-08-31 |
CN109311051A (zh) | 2019-02-05 |
KR20190041970A (ko) | 2019-04-23 |
CA3025427C (en) | 2024-03-19 |
US20220143649A1 (en) | 2022-05-12 |
RU2018145609A3 (ja) | 2020-10-08 |
DK3500374T3 (da) | 2021-07-05 |
JP2019532831A (ja) | 2019-11-14 |
PL3500374T3 (pl) | 2021-09-27 |
AU2017314105B2 (en) | 2022-07-28 |
PT3500374T (pt) | 2021-07-01 |
RU2738179C2 (ru) | 2020-12-09 |
US11707764B2 (en) | 2023-07-25 |
EP3500374B1 (en) | 2021-04-07 |
AU2017314105A1 (en) | 2018-12-13 |
RU2018145609A (ru) | 2020-09-18 |
US11292027B2 (en) | 2022-04-05 |
CN109311051B (zh) | 2021-09-21 |
ES2877163T3 (es) | 2021-11-16 |
WO2018033512A1 (en) | 2018-02-22 |
US20190217335A1 (en) | 2019-07-18 |
JP7463634B2 (ja) | 2024-04-09 |
EP3500374A1 (en) | 2019-06-26 |
HUE055599T2 (hu) | 2023-11-28 |
JP2023029844A (ja) | 2023-03-07 |
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