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EP3233516B1 - Élément de sécurité à effet de changement de couleur et caractéristiques de fluorescence - Google Patents

Élément de sécurité à effet de changement de couleur et caractéristiques de fluorescence Download PDF

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Publication number
EP3233516B1
EP3233516B1 EP15812951.0A EP15812951A EP3233516B1 EP 3233516 B1 EP3233516 B1 EP 3233516B1 EP 15812951 A EP15812951 A EP 15812951A EP 3233516 B1 EP3233516 B1 EP 3233516B1
Authority
EP
European Patent Office
Prior art keywords
security element
layer
element according
shift effect
color shift
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP15812951.0A
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German (de)
English (en)
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EP3233516A1 (fr
Inventor
Marco Mayrhofer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hueck Folien GmbH
Original Assignee
Hueck Folien GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/378—Special inks
    • B42D25/387—Special inks absorbing or reflecting ultraviolet light
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29—Securities; Bank notes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/328—Diffraction gratings; Holograms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/346—Perforations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/351—Translucent or partly translucent parts, e.g. windows
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/364—Liquid crystals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/369—Magnetised or magnetisable materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/373—Metallic materials

Definitions

  • the invention relates to a security element which has a color-shift effect and which additionally has cutouts and fluorescent features which are recognizable in transmitted light.
  • Color shift effects can be achieved by various measures, for example by thin-layer interference, such as by structures which have an electromagnetic wave-reflecting layer, a spacer layer and a layer formed from metallic clusters.
  • Such security elements are for example in US 2005/042449 A or in EP 1 558 449 A described.
  • Another possibility of providing a security element that has a color shift effect is to use a coating of liquid crystals, either in the form of a pigmented layer or a polymerized film.
  • WO 00/50249 A discloses a security element which has an optically variable material, which can be, for example, a liquid-crystalline material, and at least one additional machine-readable feature substance in the same layer.
  • the light-absorbing, preferably black background is clearly visible as a dark area on the back of a security element, such as a thread or strip, which is at least partially embedded in a document of value, such as a banknote or the like.
  • This light-absorbing background must therefore be covered in order not to make the security element recognizable from the outset. This covering can be done, for example, by a metallic layer.
  • a method for producing a substrate comprises the following steps: applying a masking lacquer to at least part of a metal layer on a first side of a transparent polymer film, removing metal from the regions not covered by the masking layer to form metal-free sections and applying another Layer for covering the covering lacquer and the metal-free sections, the further layer being a layer of liquid crystal polymer material, the covering lacquer being colored dark and masking the underlying metal areas and in the areas covered by the liquid crystal polymer material when viewed with reflection from the first side to one Color change effect leads and the contrast between the metallized and the metal-free areas can be clearly distinguished.
  • security elements that have a color shift effect can be produced by layers with optically variable pigments.
  • Such pigments are for example in US 2003/0207113 or US 5,171,363 known.
  • These security elements can also have further security features, in particular also fluorescent features, which, however, are present on the side facing away from the side with the optically variable effect.
  • Fluorescent colors are not used on the side on which the optically variable effect is visible, since their opacity significantly affects the visibility of the optically variable effect.
  • the object of the invention was to provide a security element which has a material which has an optically variable effect, preferably a color shift effect, and cutouts which can be recognized in transmitted light, the security element being designed in such a way that it both optimally recognizes the optically variable effect allowed, and additionally as a further security feature one or more coatings with fluorescent colors on the side on which the optically variable effect can be recognized, which correspond to the optically security element which has an optically variable effect.
  • the partial layer with recesses which can be recognized in transmitted light can be formed from an opaque coating which has light-absorbing properties on the side facing the coating made of the material, which has an optically variable effect, and on the side made of the material which has an optically variable effect, the side facing away has a metallic color, the partial opaque coating consisting of a light-absorbing metallic layer and a reflective metallic layer.
  • the material which has a color shift effect can be a printing ink which contains pigments of liquid-crystalline material.
  • pigments for example, there are Pigments from cholesteric or a mixture of nematic and cholesteric liquid crystals.
  • Optically variable interference pigments can also be used. Such pigments are for example in US 2003/0207113 described.
  • iridescent pigments for example Iriodine® pigments, can be used. Iriodine® are based on naturally occurring mineral mica platelets, which are coated with semi-transparent metal oxides.
  • the material which has a color shift effect can consist of a liquid crystal polymer which is applied as a solution of the cholesteric monomers or the mixture of cholesteric and nematic monomers and then crosslinked.
  • the crosslinking can take place thermally or by treatment with UV radiation or electron radiation.
  • the cutouts when viewed in transmitted light, the cutouts can be seen as a clear contrast to the regions which have a light-absorbing and a reflecting metallic layer. Due to the reflective metallic layer, the security element, if it is embedded in a document of value, is not or hardly recognizable even in incident light from the back through the paper surface. However, the cutouts can be clearly seen from the back in transmitted light. The optically variable effect and the cut-outs in the reflected light are clearly visible from the front.
  • Unstoichiometric aluminum oxide and stoichiometric or unstoichiometric copper oxide are preferably used as the light-absorbing metallic layer.
  • the light-absorbing metallic layer is preferably dark to black in color. The stronger the absorption of the background in the visible spectral range (350 - 800 nm), the stronger the visible optically variable effect.
  • Metals such as Al, Sn, Cu, Zn, Pt, Au, Ag, Cr, Ti, Mo, Fe, Pd, Ni, Co or a Cu / Al alloy are suitable as the reflective metallic layer.
  • the light-absorbing metallic layer can consist of unstoichiometric aluminum oxide, preferably with an oxygen content of approximately 19-58 at%, and the reflective metallic layer can consist of aluminum.
  • the cutouts in the light-absorbing metallic layer and the reflective metallic layer are completely congruent and can be in the form of characters, letters, numbers, images, symbols, lines, guilloches and the like. Combinations of these shapes are also possible.
  • the cutouts can also be in negative form, that is to say that the area around a character, a letter and the like forms the cutout, for example.
  • the layer structure having an optically variable effect can each consist of at least one layer reflecting electromagnetic waves, a polymeric spacer layer and a layer formed by metallic clusters.
  • An electromagnetic wave reflecting layer is applied to a carrier substrate.
  • This layer can preferably be made of metals such as aluminum, gold, chromium, silver, copper, tin, platinum, nickel or tantalum, semiconductors such as silicon and their alloys such as nickel / chromium, copper / aluminum and the like or one Printing ink with metal pigments exist.
  • the electromagnetic wave-reflecting layer is covered over the entire surface or partially by known processes, such as spraying, vapor deposition, sputtering, or, for example, as a printing ink by known printing processes (gravure, flexographic, screen, digital printing), by painting, roller application processes, slot nozzle (slot) Eye), Dip (roll dip coating) or curtain coating (curtain coating) and the like applied.
  • the subsequent polymeric spacer layer or the polymeric spacer layers can likewise be applied over the entire surface or preferably partially.
  • the polymeric layers consist, for example, of conventional or radiation-curing, in particular UV-curing, color or coating systems based on nitrocellulose, epoxy, polyester, rosin, acrylate, alkyd, melamine, PVA, PVC, isocyanate. , Urethane or PS copolymer systems.
  • a full-surface or partial layer, formed from metallic clusters, is then applied to the polymer layer.
  • the metallic clusters can consist, for example, of aluminum, gold, palladium, platinum, chromium, silver, copper, nickel, tantalum, tin and the like or their alloys, such as Au / Pd, Cu / Ni or Cr / Ni.
  • the fluorescent colors are highly transparent in visible light and thus do not impair the appearance of the optically variable element. When viewed under UV light, the fluorescent colors are clearly recognizable (above the optically active effect).
  • the fluorescent colors are matched to the optically active effect. For example, with a color shift effect from gold-colored to green fluorescent colors in yellow and green, the fluorescent colors in red and blue can be present on the security element, analogously with a color shift effect from red to blue. However, it is also possible to choose contrasting or more than two different fluorescent colors for the color shift effect. If necessary, the fluorescent colors can also be arranged in the form of a so-called rainbow layout.
  • the fluorescent colors can be present in a bar-shaped manner in an alternating sequence on the security element, the extent of the individual different fluorescent colors being able to correspond to the cutouts recognizable in transmitted light.
  • the fluorescent coating is such that it appears completely transparent in visible light.
  • transparent fluorescent dyes are used in a suitable solvent, for example diacetone alcohol, i-propyl alcohol, ethanol, ethoxypropanol, monoethylene glycol, methoxypropanol, methoxydipropanol, n-propanol, methoxybutanol, n-butanol, ethoxypropanol, butylglycol, hexane, cyclopentanone, acetone, Ethyl acetate, butyl acetate, cyclohexanone, i-propyl acetate, methyl ethyl ketone, methoxypropyl acetate, n-propyl acetate, special gasoline, toluene, water, xylene, methyl isobutyl ketone at elevated temperature, preferably dissolved to the boiling point of the solvent.
  • a suitable solvent for example diacetone alcohol, i-propyl alcohol, ethanol, ethoxyprop
  • Suitable transparent standard lacquer compositions are, for example, lacquers based on nitrocellulose, PE acrylate, PET acrylate, urethane acrylate, PVC, PMMA ethylene acrylate copolymers, styrene acrylates or epoxy acrylate, PET, PC.
  • Organic fluorescent dyes are particularly suitable as transparent fluorescent dyes.
  • Organic fluorescent dyes for example based on chelates, oxinates, derivatives of therphthalic acid, anthranilic acid, whether benzimidazole, benzthiazole, benzoxazinone, quinazolinone, or of thioxanthene, salicylic acid, organic complexes of rare earth metals, in particular pigments from the Lumilux® series, are particularly suitable (Honeywell), for example Lumilux® CD 335, Lumilux® CD 740, Lumilux® CD 340, Lumilux® Red CD 335, Lumilux® Red CD 332 (red fluorescence), optical brighteners such as Tinopal® OB, Lumilux® Blue CD 302, Lumilux® Blue CD 311, Lumilux® Blue 710, Lumilux® Blue CD 310 (blue fluorescence), Lumilux® CD 702, Lumilux® Green CD 302, Lumilux® Green CD 708, Lumilux® Green CD 308,
  • Carrier substrates include, for example, carrier films, preferably transparent, flexible plastic films, for example made of PI, PP, MOPP, PE, PPS, PEEK, PEK, PEI, PSU, PAEK, LCP, PEN, PBT, PET, PA, PC, COC, POM, ABS, PVC, PTFE, ETFE (ethylene tetrafluoroethylene), PFA (tetrafluoroethylene-perfluoropropyl vinyl ether fluorocopolymer), MFA (tetrafluoromethylene-perfluoropropyl vinyl ether fluoropolymer), PTFE (polytetrafluoroethylene), PVF (polyvinyl fluoride), PVDF (polyvinylidene fluoride) hexylene, and EFEP (fluorophenylene) Fluoropolymer) in question.
  • the carrier films preferably have a thickness of 5 to 700 ⁇ m, preferably 5 to 200 ⁇ m, particularly preferably
  • the security element according to the invention can also have further security features which can be present in further layers.
  • These security features for example, can have certain chemical, physical and also optical or optical active properties.
  • paramagnetic, diamagnetic and also ferromagnetic substances such as Iron, nickel and cobalt or their compounds or salts (for example oxides or sulfides) can be used.
  • Magnetic pigment paints with pigments based on Fe oxides, iron, nickel cobalt and their alloys, barium or cobalt ferrites, hard and soft magnetic iron and steel types in aqueous or solvent-containing dispersions are particularly suitable.
  • suitable solvents are i-propanol, ethyl acetate, methyl ethyl ketone, methoxypropanol and mixtures thereof.
  • the pigments are preferably incorporated in acrylate polymer dispersions with a molecular weight of 150,000 to 300,000, in nitrocellulose, acrylate-urethane dispersions, acrylate-styrene or PVC-containing dispersions or in solvent-containing dispersions of this type.
  • the magnetic layer can also have a coding. Both magnetic materials of the same coercivity and / or remanence, as well as different coercivity and / or remanence can be used to form the coding.
  • the reflective metallic layer itself can have magnetic properties. This is achieved, for example, by using a magnetic material such as Fe, Ni, Co.
  • the optical properties of the layer can be influenced by visible dyes or pigments, heat-sensitive colors or pigments. These can be used individually or in all possible combinations.
  • Optically active features are understood here to mean diffraction structures, diffraction gratings, kinegrams, holograms, DID® (microstructures of the 0th order in connection with thin layers).
  • optically active features can be achieved, for example, using known UV embossing processes, as described, for example, in EP 1 310 381 A are described or produced by hot stamping processes
  • This adhesive coating can either be in the form of a heat seal, cold seal or self-adhesive coating.
  • the adhesive can also be pigmented, all known pigments or dyes, for example TiO 2 , ZnS, kaolin, ATO, FTO, aluminum, chromium and silicon oxides or, for example, organic pigments such as pthalocyanine blue, i-indolid yellow, dioxazine violet and the like being used as pigments can.
  • luminescent dyes or pigments that fluoresce or phosphoresce in the visible, UV or IR range, heat-sensitive colors or pigments can be added. These can be used in all possible combinations.
  • luminescent pigments can also be used alone or in combination with other dyes and / or pigments.
  • the security element can also be protected by one or more protective lacquer layer (s), which can be pigmented or unpigmented, or further refined, for example, by lamination or the like.
  • protective lacquer layer can be pigmented or unpigmented, or further refined, for example, by lamination or the like.
  • the security element according to the invention is suitable for at least partial embedding in or application on identity cards, cards, banknotes or labels, seals and the like, but also as packaging material, for example in the pharmaceutical, electronics and / or food industry, for example in the form of blister films, folding boxes , Covers, foil packaging and the like.
  • the substrates or film materials are preferably cut into strips, threads or patches, the width of the strips or threads preferably being 0.5-20 mm and the patches preferably having average widths or lengths of 0.3- 20 mm.
  • the film material is preferably cut into strips, tapes, threads or patches, the width of the threads, strips or tapes preferably being 0.5-50 mm and the patches preferably having average widths and lengths of 2 - have 30 mm.

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  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Credit Cards Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Paints Or Removers (AREA)

Claims (14)

  1. Elément de sécurité comprenant un substrat support (1), qui présente un revêtement constitué d'un matériau (3) créant un effet goniochromatique, une couche partielle (6) comportant des évidements visibles en lumière transmise et une caractéristique fluorescente (2), élément dans lequel, quand on regarde à partir du côté du substrat support sur lequel est disposé le revêtement constitué d'un matériau créant un effet goniochromatique, la couche partielle (6) comportant des évidements visibles en lumière transmise est située en-dessous du revêtement en un matériau créant un effet goniochromatique, et la caractéristique fluorescente (2) est constituée d'une couche partielle comportant des couleurs transparentes en lumière visible et fluorescentes en lumière UV, et est située par-dessus le revêtement en un matériau (3) créant un effet goniochromatique.
  2. Elément de sécurité selon la revendication 1, caractérisé en ce que la couche partielle (6) comportant des évidements visibles en lumière transmise est constituée d'un revêtement opaque, qui présente des propriétés d'absorption de la lumière sur la face dirigée vers le revêtement en le matériau (3) qui présente un effet goniochromatique, et, sur la face opposée au revêtement en un matériau créant un effet goniochromatique présente une coloration métallique, le revêtement opaque partiel (6) étant constitué d'une couche métallique absorbant la lumière et d'une couche métallique réfléchissante.
  3. Elément de sécurité selon la revendication 2, caractérisé en ce que le matériau (3) créant un effet goniochromatique est une couche polymère cristalline liquide, formée de cristaux liquides cholestériques ou d'un mélange de cristaux liquides cholestériques et nématiques.
  4. Elément de sécurité selon la revendication 2, caractérisé en ce que le matériau (3) présentant un effet goniochromatique est une encre d'imprimerie ayant des pigments optiquement variables, choisis parmi les pigments cristaux liquides cholestériques ou un mélange de pigments cristaux liquides nématiques et cholestériques, des pigments d'interférence variables ou des pigments iridescents.
  5. Elément de sécurité selon l'une des revendications 2 à 4, caractérisé en ce que la couche métallique non absorbante est constituée d'oxyde d'aluminium non stœchiométrique ou d'oxyde de cuivre stœchiométrique ou non stœchiométrique.
  6. Elément de sécurité selon l'une des revendications 2 à 5, caractérisé en ce que la couche métallique réfléchissante est constituée d'Al, de Sn, de Cu, de Zn, de Pt, d'Au, d'Ag, de Cr, de Ti, de Mo, de Fe, de Pd, de Ni, de Co ou d'un alliage Cu/Al.
  7. Elément de sécurité selon l'une des revendications 2 à 6, caractérisé en ce que les évidements visibles en lumière transmise se présentent sous forme de signes, de lettres, de chiffres, d'images, de symboles, de lignes, de guillochis, d'une trame ponctuelle ou linéaire ou d'une trame en demi-ton.
  8. Elément de sécurité selon la revendication 1, caractérisé en ce que le matériau (3) créant un effet goniochromatique est constitué d'au moins une couche choisie parmi une couche réfléchissant les ondes électromagnétiques, une couche d'écartement polymère et une couche formée de clusters métalliques.
  9. Elément de sécurité selon l'une des revendications 1 à 6, caractérisé en ce que les couleurs fluorescentes sont constituées de colorants fluorescents organiques.
  10. Elément de sécurité selon l'une des revendications 1 à 9, caractérisé en ce que l'élément de sécurité présente une ou plusieurs couches supplémentaires, partielles ou en pleine surface, présentant des propriétés optiques, optiquement actives, conductrices de l'électricité ou magnétiques.
  11. Elément de sécurité selon la revendication 10, caractérisé en ce que la couche magnétique est une couche magnétique codée.
  12. Elément de sécurité selon la revendication 10 ou 11, caractérisé en ce que la couche magnétique est constituée de matériaux magnétiques présentant des coercivités et/ou des rémanences identiques ou différentes.
  13. Elément de sécurité selon l'une des revendications 1 à 12, caractérisé en ce que l'élément de sécurité est, sur une face ou sur les deux faces, pourvu d'une ou plusieurs couches de vernis de sécurité pigmentées ou non pigmentées.
  14. Elément de sécurité selon l'une des revendications 1 à 13, caractérisé en ce que l'élément de sécurité est, sur une face ou sur les deux faces, pourvu d'un revêtement thermoscellable, scellable à froid ou autoadhésif (5), pigmenté ou non pigmenté.
EP15812951.0A 2014-12-15 2015-11-26 Élément de sécurité à effet de changement de couleur et caractéristiques de fluorescence Active EP3233516B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA903/2014A AT516688A1 (de) 2014-12-15 2014-12-15 Sicherheitselement mit Farbkippeffekt und fluoreszierenden Merkmalen, Verfahren zu dessen Herstellung und dessen Verwendung
PCT/EP2015/002377 WO2016096086A1 (fr) 2014-12-15 2015-11-26 Élément de sécurité à effet de changement de couleur et caractéristiques de fluorescence, procédé de fabrication et utilisation de celui-ci

Publications (2)

Publication Number Publication Date
EP3233516A1 EP3233516A1 (fr) 2017-10-25
EP3233516B1 true EP3233516B1 (fr) 2020-06-03

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EP15812951.0A Active EP3233516B1 (fr) 2014-12-15 2015-11-26 Élément de sécurité à effet de changement de couleur et caractéristiques de fluorescence

Country Status (4)

Country Link
US (1) US10214045B2 (fr)
EP (1) EP3233516B1 (fr)
AT (1) AT516688A1 (fr)
WO (1) WO2016096086A1 (fr)

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DE102018000343A1 (de) 2018-01-17 2019-07-18 Giesecke+Devrient Currency Technology Gmbh Sicherheitselement mit Lumineszenz-Motivbereich
DE102018008147A1 (de) * 2018-10-15 2020-04-16 Giesecke+Devrient Currency Technology Gmbh Sicherheitselement und mit dem Sicherheitselement ausgestatteter Datenträger
EP4017938A1 (fr) 2019-08-19 2022-06-29 Basf Se Procédé de production de films de cristaux liquides exempts de texture d'empreinte digitale
EP3800061A1 (fr) 2019-10-03 2021-04-07 Hueck Folien Gesellschaft m.b.H. Élément de sécurité doté d'une couche à effet optique
EP3800062A1 (fr) * 2019-10-03 2021-04-07 Hueck Folien Gesellschaft m.b.H. Élément de sécurité doté d'une couche à effet optique conçue sous la forme d'élément à couche mince
EP3800060A1 (fr) 2019-10-03 2021-04-07 Hueck Folien Gesellschaft m.b.H. Élément de sécurité pourvu d'au moins une première zone à inversement de couleurs
EP3800063A1 (fr) * 2019-10-03 2021-04-07 Hueck Folien Gesellschaft m.b.H. Élément de sécurité pour titres de valeurs ou papiers de sécurité
DE102022123531A1 (de) 2022-09-14 2024-03-14 Bundesdruckerei Gmbh Dokument mit einer Guilloche

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WO2001003945A1 (fr) 1999-07-08 2001-01-18 Flex Products, Inc. Surfaces de diffraction avec arriere-plans a changement de couleur
WO2003061980A1 (fr) 2002-01-25 2003-07-31 De La Rue International Limited Ameliorations de procedes de fabrication de substrats
EP1558449B1 (fr) 2002-08-06 2016-01-06 Hueck Folien Ges.m.b.H Procede de production de caracteristiques d'identification infalsifiables
US20050042449A1 (en) 2003-07-14 2005-02-24 Jds Uniphase Corporation, Vacuum roll coated security thin film interference products with overt and/or covert patterned layers
WO2007138255A1 (fr) 2006-05-26 2007-12-06 De La Rue International Limited Améliorations concernant la fabrication de dispositifs de sécurité
WO2008017362A2 (fr) 2006-08-09 2008-02-14 Ovd Kinegram Ag Procédé de fabrication d'un corps multicouche et corps multicouche
WO2008043981A1 (fr) 2006-10-10 2008-04-17 De La Rue International Limited Améliorations apportées à des dispositifs de sécurité
EP2006116A1 (fr) 2007-06-21 2008-12-24 Hueck Folien Ges.m.b.H. Elément de sécurité à couleur variable selon l'orientation et signes de sécurité ne pouvant pas être reconnus visuellement
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WO2011032671A1 (fr) 2009-09-21 2011-03-24 Giesecke & Devrient Gmbh Élément de sécurité allongé présentant des zones magnétiques lisibles par ordinateur

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EP3233516A1 (fr) 2017-10-25
AT516688A1 (de) 2016-07-15
US10214045B2 (en) 2019-02-26
WO2016096086A1 (fr) 2016-06-23

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