EP2406074B1 - Security foil or security label comprising a manipulation detection system - Google Patents

Security foil or security label comprising a manipulation detection system Download PDF

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Publication number
EP2406074B1
EP2406074B1 EP10711997.6A EP10711997A EP2406074B1 EP 2406074 B1 EP2406074 B1 EP 2406074B1 EP 10711997 A EP10711997 A EP 10711997A EP 2406074 B1 EP2406074 B1 EP 2406074B1
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EP
European Patent Office
Prior art keywords
layer
layers
security
adhesion
optically active
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EP10711997.6A
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German (de)
French (fr)
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EP2406074A1 (en
Inventor
Marco Mayrhofer
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Hueck Folien GmbH
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Hueck Folien GmbH
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Priority to SI201030498T priority Critical patent/SI2406074T1/en
Priority to PL10711997T priority patent/PL2406074T3/en
Publication of EP2406074A1 publication Critical patent/EP2406074A1/en
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    • 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
    • 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
    • B42D15/00—Printed matter of special format or style not otherwise provided for
    • B42D15/0073—Printed matter of special format or style not otherwise provided for characterised by shape or material of the sheets
    • 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
    • B42D25/40—Manufacture
    • B42D25/45—Associating two or more layers
    • B42D25/465—Associating two or more layers using chemicals or adhesives
    • B42D25/47—Associating two or more layers using chemicals or adhesives using adhesives
    • B42D2033/10—
    • B42D2033/24—
    • 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

Definitions

  • the invention relates to a security film which can be applied to a document of value or a data carrier and allows a proof of tampering.
  • Security labels or security films are known and generally have a tamper-evident layer, that is a layer with different areas of adhesion, as well as an adhesive coating and additionally one or more security features.
  • Particularly suitable security features are, for example, luminescent security features that are generally inexpensive to produce but offer relatively good protection against counterfeiting.
  • the object of the invention was to provide a security film which can be applied to an object to be secured, for example a value document, a data carrier, a packaging or the like.
  • Carrier foils a) are preferably flexible plastic foils, for example of PI, PP, MOPP, PE, PPS, PEEK, PEK, PEI, PSU, PAEK, LCP, PEN, PBT, PET, PA, PC, COC, POM, ABS , PVC, fluoropolymers such as Teflon and the like in question.
  • the carrier films preferably have a thickness of 5 to 700 ⁇ m, preferably 5 to 200 ⁇ m, particularly preferably 5 to 100 ⁇ m.
  • Optically active structures are understood here to be, in particular, diffraction-optically active structures, such as holograms, surface reliefs, diffraction structures, diffraction gratings, kinegrams and the like.
  • a radiation-curable lacquer layer b) is applied to the first carrier substrate.
  • the radiation-curable lacquer may contain, for example, a radiation-curable lacquer system based on a polyester, an epoxy or polyurethane system which contains two or more different photoinitiators familiar to the person skilled in the art, which can initiate curing of the lacquer system to varying degrees at different wavelengths.
  • a photoinitiator can be activated at a wavelength of 200 to 400 nm, the second photoinitiator then activatable at a wavelength of 370 to 600 nm.
  • Sufficient difference should be maintained between the activation wavelengths of the two photoinitiators to prevent over-excitation of the second photoinitiator while the first photoinitiator is activated.
  • the region in which the second photoinitiator is excited should be in the transmission wavelength range of the carrier substrate used.
  • electron radiation can be used for the main curing (activation of the second photoinitiator) also electron radiation can be used.
  • a water-thinnable varnish can also be used. Preference is given to polyester-based paint systems.
  • the impression of the surface structure that is, the diffraction, diffraction or relief structure, for example, at controlled temperature by means of a die or using a stamping die in the radiation-curable lacquer layer, which was pre-cured by activation of the first photoinitiator to the gel point and at the time of molding in this stage is located.
  • a water-dilutable radiation-curable lacquer is used, it is optionally possible to precede predrying, for example by means of IR radiators.
  • the layer thickness of the applied radiation-curable lacquer can vary depending on the requirements of the end product and thickness of the substrate and is generally between 0.5 and 50 .mu.m, preferably between 2 and 10 .mu.m, more preferably between 2 and 5 .mu.m.
  • a full-area or preferably partial metallic layer c) is applied to the optically active structure produced in this way.
  • a solvent-soluble paint application is applied, treated in a second step, this layer by means of an in-line plasma, corona or flame process and applied in a third step, a layer of metals, metal compounds, alloys, whereupon a fourth step of the paint application by means of a solvent, optionally combined with a mechanical action is removed.
  • the color or lacquer used is soluble in a solvent, preferably water, but it is also possible to use a dye soluble in any solvent, for example in alcohol, esters and the like.
  • the color or the colored lacquer can be customary compositions based on natural or artificial macromolecules.
  • the soluble color may be pigmented or unpigmented.
  • pigments all known pigments can be used. Particularly suitable are TiO 2 , ZnS, kaolin and the like.
  • the printed carrier substrate is optionally treated to improve the adhesion of the subsequently applied layer by means of an in-line plasma (low pressure or adjplasma-), corona or flame process.
  • an in-line plasma low pressure or adjplasma-
  • corona- corona or flame process.
  • high-energy plasma such as Aroder Ar / O 2 plasma is cleaned the surface of Tonungsresten the inks.
  • the surface is activated.
  • terminal polar groups are generated on the surface. This improves the adhesion of metals and the like to the surface.
  • a thin metal or metal oxide layer can be applied as adhesion promoter, for example by sputtering or vapor deposition.
  • adhesion promoter particularly suitable are Cr, Al, Ag, Ti, Cu, TiO 2 , Si oxides or chromium oxides.
  • This adhesion promoter layer generally has a thickness of 0.1 nm-5 nm, preferably 0.2 nm-2 nm, particularly preferably 0.2 to 1 nm.
  • a partial metallic layer c like the second metallic layer h), may be applied in the form of letters, numbers, symbols, lines, guilloches, logos and the like. Furthermore, these letters, numbers, symbols, lines, guilloches, logos and the like may be defined by recesses in the metallic layer.
  • metallic layers for example, layers of Al, Cu, Au, Ag, Pd, Pt, Ni, Zn, Sn and the like in question.
  • alloys or metallic oxides such as Cu oxides, TiO 2 , SiO x.
  • the structure is then optionally provided with a protective lacquer layer and connected using a Kaschierklebe harsh with another carrier substrate f), which also has a radiation-curable lacquer layer g).
  • this second carrier substrate f) and the second radiation-curable lacquer layer g it is preferable to use e.g. an acrylate-coated plastic film or a film provided with a primer used, so that the adhesion of the radiation-curable paint to the film is significantly better than for metallization.
  • the materials mentioned for the carrier substrate a) can be used for the carrier substrate f).
  • This second radiation-curable lacquer layer may have a further optically active structure.
  • the radiation-curable lacquer layer may be provided with a further coating, for example a partial opaque coating, which has recesses in the form of characters, letters, patterns, symbols, lines, guilloches and the like.
  • a further partial metallic layer h) is applied to this layer, but the above-described steps of the pretreatment and the application of an adhesion promoter are not carried out during the production of the layer, provided that the lowest adhesion in the structure between the layers g) and h) should be present.
  • a weaker adhesion of the metallic layer is achieved on the underlying layer, it forms here a weakening in the composite, a so-called predetermined breaking point.
  • the function of the security element is based on two metallizations, which are superimposed so that only the upper metallization (with the first optically active structure) is visible and only after manipulation the second metallization (possibly with a further optically active structure) appears.
  • partial metallic layers c) and h) are congruent, but they can also be arranged partially overlapping each other or complement each other, so that before the manipulation the impression of a continuous metallization arises.
  • the layers can be arranged congruently to the optically active structure (s) but also partially overlapping.
  • the structure can be provided with a protective lacquer layer and / or an adhesive coating for application to a substrate.
  • the adhesive coating may be a self-adhesive coating, a cold or heat seal coating.
  • Both metallized areas are identical and superimposed in register. Furthermore, there is a hidden character between the first and second metallization, which becomes visible only after a manipulation. On the substrate, the lower metallization with the hologram "FALSE" remains. The first hologram is subtracted.
  • Fig. 2 is under the first partial metallic layer c) (including embossing) yet another partial layer (eg in the form of letters or the letters defining as recesses) hidden, which becomes visible only when a manipulation takes place. After stripping, metallized letters "FALSE" remain on the substrate. The main hologram is subtracted.
  • optically active structures are introduced in the layers b) and g), then these can be introduced in register with each other or at least partially overlapping.
  • the optically active structure may optionally contain additional information, so that a proof of authenticity is also possible after the manipulation.
  • product codes for example, product codes, lot numbers and the like may be incorporated.
  • the security film according to the invention can have further security features, such as electrically conductive layers, layers with magnetic or optical features (for example luminescent features, thermochromic features, pearlescent layers and the like).
  • the security film according to the invention can be used as a security element on data carriers or packaging, as a security label for securing objects or packaging or as a vignette.

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  • General Chemical & Material Sciences (AREA)
  • Toxicology (AREA)
  • Finance (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Accounting & Taxation (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Laminated Bodies (AREA)
  • Credit Cards Or The Like (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Adhesive Tapes (AREA)

Description

Die Erfindung betrifft eine Sicherheitsfolie, die auf ein Wertdokument oder einen Datenträger aufgebracht werden kann und einen Manipulationsnachweis erlaubt.The invention relates to a security film which can be applied to a document of value or a data carrier and allows a proof of tampering.

Sicherheitsetiketten oder Sicherheitsfolien sind bekannt und weisen im Allgemeinen eine Manipulationsnachweisschicht, das heißt eine Schicht mit unterschiedlichen Haftungsbereichen auf, sowie eine Klebebeschichtung und zusätzlich ein oder mehrere Sicherheitsmerkmale. Besonders geeignete Sicherheitsmerkmale sind beispielsweise lumineszierende Sicherheitsmerkmale, die im Allgemeinen kostengünstig herstellbar sind, aber einen relativ guten Schutz gegen Nachahmung bieten.Security labels or security films are known and generally have a tamper-evident layer, that is a layer with different areas of adhesion, as well as an adhesive coating and additionally one or more security features. Particularly suitable security features are, for example, luminescent security features that are generally inexpensive to produce but offer relatively good protection against counterfeiting.

Aufgabe der Erfindung war es, eine Sicherheitsfolie bereitzustellen, die auf ein zu sicherndes Objekt, beispielsweise ein Wertdokument, einen Datenträger, eine Verpackung oder dergleichen aufgebracht werden kann.The object of the invention was to provide a security film which can be applied to an object to be secured, for example a value document, a data carrier, a packaging or the like.

Gegenstand der Erfindung ist daher eine Sicherheitsfolie, bestehend aus zwei oder mehreren Trägersubstraten, die mindestens eine optisch aktive Struktur, und mindestens 2 metallische Schichten aufweisen, dadurch gekennzeichnet, dass die Sicherheitsfolie wie folgt aufgebaut ist:

  • a) ein erstes Trägersubstrat
  • b) eine erste strahlungshärtbare Lackschicht auf Basis eines Polyester-, eines Epoxy- oder Polyurethansystems, das zwei oder mehr verschiedene Photoinitiatoren enthält, oder ein wasserverdünnbarer Lack auf Polyesterbasis, in die eine optisch aktive Struktur in Form eines Hologramms, eines Oberflächenreliefs, einer Beugungsstruktur, eines Beugungsgitters oder eines Kinegramms eingebracht ist,
  • c) eine erste metallische Schicht
  • d) eine Schutzlackschicht
  • e) eine Klebeschicht
  • f) ein zweites Trägersubstrat
  • g) eine zweite strahlungshärtbare Lackschicht
  • h) eine zweite metallische Schicht
  • i) ggf. eine Schutzlackschicht
  • k) ggf. eine Klebebeschichtung,
wobei die Haftung zwischen den Schichten g) und h) oder f) und g) deutlich geringer ist als die Haftung zwischen den übrigen Schichten wobei für den Fall, dass die Haftung zwischen Schicht f) und g) deutlich geringer ist als die Haftung zwischen den übrigen Schichten, als zweites Trägersubstrat f) eine Kunststofffolie aus PI, PP, MOPP, PE, PPS, PEEK, PEK, PEI, PSU, PAEK, LCP, PEN, PBT, PET, PA, PC, COC, POM, ABS, PVC, Fluorpolymeren, wie Teflon, verwendet wird,
und wobei für den Fall, dass die Haftung zwischen den Schichten g) und h) deutlich geringer ist als die Haftung zwischen den übrigen Schichten, als zweites Trägersubstrat f) eine mit einem Haftvermittler versehene Folie (Kunststofffolie) oder eine acrylatbeschichtete Kunststofffolie verwendet wird.The invention therefore relates to a security film consisting of two or more carrier substrates, which have at least one optically active structure, and at least 2 metallic layers, characterized in that the security film is constructed as follows:
  • a) a first carrier substrate
  • b) a first radiation-curable lacquer layer based on a polyester, an epoxy or polyurethane system containing two or more different photoinitiators, or a water-thinnable polyester-based lacquer into which an optically active structure in the form of a hologram, a surface relief, a diffraction structure, a diffraction grating or a kinegram is introduced,
  • c) a first metallic layer
  • d) a protective lacquer layer
  • e) an adhesive layer
  • f) a second carrier substrate
  • g) a second radiation-curable lacquer layer
  • h) a second metallic layer
  • i) if necessary, a protective lacquer layer
  • k) optionally an adhesive coating,
wherein the adhesion between the layers g) and h) or f) and g) is significantly lower than the adhesion between the remaining layers, in which case the adhesion between layer f) and g) is significantly less than the adhesion between the layers remaining layers, as a second carrier substrate f) a plastic film of PI, PP, MOPP, PE, PPS, PEEK, PEK, PEI, PSU, PAEK, LCP, PEN, PBT, PET, PA, PC, COC, POM, ABS, PVC , Fluoropolymers, such as Teflon, is used,
and wherein, in the event that the adhesion between the layers g) and h) is significantly lower than the adhesion between the remaining layers, as a second carrier substrate f) is used a film provided with a primer (plastic film) or an acrylate-coated plastic film.

Als Trägersubstrate a) kommen beispielsweise Trägerfolien vorzugsweise flexible Kunststofffolien, beispielsweise aus PI, PP, MOPP, PE, PPS, PEEK, PEK, PEI, PSU, PAEK, LCP, PEN, PBT, PET, PA, PC, COC, POM, ABS, PVC, Fluorpolymere, wie Teflon und dergleichen in Frage. Die Trägerfolien weisen vorzugsweise eine Dicke von 5 - 700 µm, bevorzugt 5 - 200 µm, besonders bevorzugt 5 - 100 µm auf.Carrier foils a) are preferably flexible plastic foils, for example of PI, PP, MOPP, PE, PPS, PEEK, PEK, PEI, PSU, PAEK, LCP, PEN, PBT, PET, PA, PC, COC, POM, ABS , PVC, fluoropolymers such as Teflon and the like in question. The carrier films preferably have a thickness of 5 to 700 μm, preferably 5 to 200 μm, particularly preferably 5 to 100 μm.

Unter optisch aktiver Struktur werden hier insbesondere beugungsoptisch aktive Strukturen, wie Hologramme, Oberflächenreliefs, Beugungsstrukturen, Beugungsgitter, Kinegramme und dergleichen verstanden.Optically active structures are understood here to be, in particular, diffraction-optically active structures, such as holograms, surface reliefs, diffraction structures, diffraction gratings, kinegrams and the like.

Auf das erste Trägersubstrat wird eine strahlungshärtbare Lackschicht b) aufgebracht.A radiation-curable lacquer layer b) is applied to the first carrier substrate.

Der strahlungshärtbare Lack kann beispielsweise ein strahlungshärtbares Lacksystem auf Basis eines Polyester-, eines Epoxy- oder Polyurethansystems das zwei oder mehr verschiedene, dem Fachmann geläufige Photoinitiatoren enthält, die bei unterschiedlichen Wellenlängen eine Härtung des Lacksystems in unterschiedlichem Ausmaß initiieren können. So kann beispielsweise ein Photoinitiator bei einer Wellenlänge von 200 bis 400 nm aktivierbar sein, der zweite Photoinitiator dann bei einer Wellenlänge von 370 bis 600 nm aktivierbar. Zwischen den Aktivierungswellenlängen der beiden Photoinitiatoren sollte genügend Differenz eingehalten werden, damit nicht eine zu starke Anregung des zweiten Photoinitiators erfolgt, während der erste Photoinitiator aktiviert wird. Der Bereich, in dem der zweite Photoinitiator angeregt wird, sollte im Transmissionswellenlängenbereich des verwendeten Trägersubstrats liegen. Für die Haupthärtung (Aktivierung des zweiten Photoinitiators) kann auch Elektronenstrahlung verwendet werden.The radiation-curable lacquer may contain, for example, a radiation-curable lacquer system based on a polyester, an epoxy or polyurethane system which contains two or more different photoinitiators familiar to the person skilled in the art, which can initiate curing of the lacquer system to varying degrees at different wavelengths. Thus, for example, a photoinitiator can be activated at a wavelength of 200 to 400 nm, the second photoinitiator then activatable at a wavelength of 370 to 600 nm. Sufficient difference should be maintained between the activation wavelengths of the two photoinitiators to prevent over-excitation of the second photoinitiator while the first photoinitiator is activated. The region in which the second photoinitiator is excited should be in the transmission wavelength range of the carrier substrate used. For the main curing (activation of the second photoinitiator) also electron radiation can be used.

Als strahlungshärtbarer Lack kann auch ein wasserverdünnbarer Lack verwendet werden. Bevorzugt werden Lacksysteme auf Polyesterbasis.As a radiation-curable varnish, a water-thinnable varnish can also be used. Preference is given to polyester-based paint systems.

Die Abformung der Oberflächenstruktur, also der Diffraktions-, Beugungs- oder Reliefstruktur erfolgt beispielsweise bei kontrollierter Temperatur mittels einer Matrize oder unter Verwendung einer Prägeform in die strahlungshärtbare Lackschicht, die durch Aktivierung des ersten Photoinitiators bis zum Gelpunkt vorgehärtet wurde und zum Zeitpunkt der Abformung sich in diesem Stadium befindet.The impression of the surface structure, that is, the diffraction, diffraction or relief structure, for example, at controlled temperature by means of a die or using a stamping die in the radiation-curable lacquer layer, which was pre-cured by activation of the first photoinitiator to the gel point and at the time of molding in this stage is located.

Wird ein wasserverdünnbarer strahlungshärtbarer Lack verwendet kann gegebenenfalls eine Vortrocknung vorgeschaltet werden, beispielsweise durch IR-Strahler.If a water-dilutable radiation-curable lacquer is used, it is optionally possible to precede predrying, for example by means of IR radiators.

Die Schichtdicke des aufgebrachten strahlungshärtbaren Lacks kann je nach Anforderung an das Endprodukt und Dicke des Substrats variieren und beträgt im allgemeinen zwischen 0,5 und 50 µm, vorzugsweise zwischen 2 und 10 µm, besonders bevorzugt zwischen 2 und 5 µm.The layer thickness of the applied radiation-curable lacquer can vary depending on the requirements of the end product and thickness of the substrate and is generally between 0.5 and 50 .mu.m, preferably between 2 and 10 .mu.m, more preferably between 2 and 5 .mu.m.

Anschließend wird auf die so hergestellte optisch aktive Struktur eine vollflächige oder vorzugsweise partielle metallische Schicht c) aufgebracht.Subsequently, a full-area or preferably partial metallic layer c) is applied to the optically active structure produced in this way.

Dazu wird vorzugsweise in einem ersten Schritt ein in einem Lösungsmittel löslicher Farbauftrag aufgebracht, in einem zweiten Schritt diese Schicht mittels eines Inline- Plasma-, Corona- oder Flammprozesses behandelt und in einem dritten Schritt eine Schicht aus Metallen, Metallverbindungen, Legierungen aufgebracht, worauf in einem vierten Schritt der Farbauftrag mittels eines Lösungsmittels, gegebenenfalls kombiniert mit einer mechanischen Einwirkung entfernt wird.For this purpose, preferably in a first step, a solvent-soluble paint application is applied, treated in a second step, this layer by means of an in-line plasma, corona or flame process and applied in a third step, a layer of metals, metal compounds, alloys, whereupon a fourth step of the paint application by means of a solvent, optionally combined with a mechanical action is removed.

Die verwendete Farbe bzw. der verwendete Farblack ist in einem Lösungsmittel, vorzugsweise in Wasser löslich, es kann jedoch auch eine in jedem beliebigen Lösungsmittel, beispielsweise in Alkohol, Estern und dergleichen lösliche Farbe verwendet werden. Die Farbe bzw. der Farblack können übliche Zusammensetzungen auf Basis von natürlichen oder künstlichen Makromolekülen sein. Die lösliche Farbe kann pigmentiert oder nicht pigmentiert sein. Als Pigmente können alle bekannten Pigmente verwendet werden. Besonders geeignet sind TiO2, ZnS, Kaolin und dergleichen.The color or lacquer used is soluble in a solvent, preferably water, but it is also possible to use a dye soluble in any solvent, for example in alcohol, esters and the like. The color or the colored lacquer can be customary compositions based on natural or artificial macromolecules. The soluble color may be pigmented or unpigmented. As pigments, all known pigments can be used. Particularly suitable are TiO 2 , ZnS, kaolin and the like.

Anschließend wird das bedruckte Trägersubstrat gegebenenfalls zur Verbesserung der Haftung der nachfolgend aufgebrachten Schicht mittels eines Inline- Plasma- (Niederdruck- oder Atmosphärenplasma-), Corona- oder Flammprozesses behandelt. Durch energiereiches Plasma, beispielsweise Aroder Ar/O2-Plasma wird die Oberfläche von Tonungsresten der Druckfarben gereinigt. Gleichzeitig wird die Oberfläche aktiviert. Dabei werden endständige polare Gruppen an der Oberfläche erzeugt. Dadurch wird die Haftung von Metallen und dergleichen an der Oberfläche verbessert.Subsequently, the printed carrier substrate is optionally treated to improve the adhesion of the subsequently applied layer by means of an in-line plasma (low pressure or Atmosphärenplasma-), corona or flame process. By high-energy plasma, such as Aroder Ar / O 2 plasma is cleaned the surface of Tonungsresten the inks. At the same time, the surface is activated. In this case, terminal polar groups are generated on the surface. This improves the adhesion of metals and the like to the surface.

Gegebenenfalls kann gleichzeitig mit der Anwendung der Plasma- bzw. Corona- oder Flammbehandlung eine dünne Metall- oder Metalloxidschicht als Haftvermittler, beispielsweise durch Sputtern oder Aufdampfen aufgebracht werden. Besonders geeignet sind dabei Cr, Al, Ag, Ti, Cu, TiO2, Si-Oxide oder Chromoxide. Diese Haftvermittlerschicht weist im allgemeinen eine Dicke von 0,1 nm - 5nm, vorzugsweise 0,2 nm - 2 nm, besonders bevorzugt 0,2 bis 1 nm auf.Optionally, simultaneously with the application of the plasma or corona or flame treatment, a thin metal or metal oxide layer can be applied as adhesion promoter, for example by sputtering or vapor deposition. Particularly suitable are Cr, Al, Ag, Ti, Cu, TiO 2 , Si oxides or chromium oxides. This adhesion promoter layer generally has a thickness of 0.1 nm-5 nm, preferably 0.2 nm-2 nm, particularly preferably 0.2 to 1 nm.

Dadurch wird die benötigte ausgezeichnete Haftung zwischen den beiden Schichten b) und c) erreicht.This achieves the required excellent adhesion between the two layers b) and c).

Eine partielle metallische Schicht c) kann ebenso wie die zweite metallische Schicht h) in Form von Buchstaben, Zahlen, Symbolen, Linien, Guillochen, Logos und dergleichen aufgebracht sein. Weiters können diese Buchstaben, Zahlen, Symbolen, Linien, Guillochen, Logos und dergleichen durch Aussparungen in der metallischen Schicht definiert sein.A partial metallic layer c), like the second metallic layer h), may be applied in the form of letters, numbers, symbols, lines, guilloches, logos and the like. Furthermore, these letters, numbers, symbols, lines, guilloches, logos and the like may be defined by recesses in the metallic layer.

Als metallische Schichten kommen beispielsweise Schichten aus Al, Cu, Au, Ag, Pd, Pt, Ni, Zn, Sn und dergleichen in Frage. Ferner kommen als metallische Schichten Legierungen oder metallische Oxide wie Cu-oxide, TiO2, SiOx in Frage.As metallic layers, for example, layers of Al, Cu, Au, Ag, Pd, Pt, Ni, Zn, Sn and the like in question. Also suitable as metallic layers are alloys or metallic oxides such as Cu oxides, TiO 2 , SiO x.

Der Aufbau wird anschließend ggf. mit einer Schutzlackschicht versehen und unter Verwendung einer Kaschierklebeschicht mit einem weiteren Trägersubstrat f) verbunden, das ebenfalls eine strahlungshärtbare Lackschicht g) aufweist.The structure is then optionally provided with a protective lacquer layer and connected using a Kaschierklebeschicht with another carrier substrate f), which also has a radiation-curable lacquer layer g).

Zur Erzielung einer starken Haftung zwischen diesem zweiten Trägersubstrat f) und der zweiten strahlungshärtbaren Lackschicht g) wird vorzugsweise z.B. eine acrylatbeschichtete Kunststofffolie oder eine mit einem Haftvermittler versehene Folie verwendet, sodass die Haftung des strahlungshärtbaren Lacks zur Folie deutlich besser als zur Metallisierung ist.To achieve a strong adhesion between this second carrier substrate f) and the second radiation-curable lacquer layer g), it is preferable to use e.g. an acrylate-coated plastic film or a film provided with a primer used, so that the adhesion of the radiation-curable paint to the film is significantly better than for metallization.

Soll die geringste Haftung im Aufbau zwischen den Schichten f) und g) eingestellt werden so kommen die für das Trägersubstrat a) angeführten Materialien für das Trägersubstrat f) in Frage.If the lowest adhesion in the structure between the layers f) and g) is to be set, then the materials mentioned for the carrier substrate a) can be used for the carrier substrate f).

Diese zweite strahlungshärtbare Lackschicht kann eine weitere optisch aktive Struktur aufweisen.
Gegebenenfalls kann die strahlungshärtbare Lackschicht mit einer weiteren Beschichtung versehen sein, beispielsweise einer partiellen opaken Beschichtung, die Aussparungen in Form von Zeichen, Buchstaben, Mustern, Symbolen, Linien, Guillochen und dergleichen aufweist.This second radiation-curable lacquer layer may have a further optically active structure.
Optionally, the radiation-curable lacquer layer may be provided with a further coating, for example a partial opaque coating, which has recesses in the form of characters, letters, patterns, symbols, lines, guilloches and the like.

Anschließend ist auf diese Schicht eine weitere partielle metallische Schicht h) aufgebracht, wobei jedoch bei der Herstellung der Schicht die oben beschriebenen Schritte der Vorbehandlung und der Aufbringung eines Haftvermittlers nicht durchgeführt werden, sofern die geringste Haftung im Aufbau zwischen den Schichten g) und h) vorliegen soll.
Dadurch wird eine schwächere Haftung der metallischen Schicht auf der darunter liegenden Schicht erreicht, es bildet sich hier eine Schwächung im Verbund, eine so genannte Sollbruchstelle.Subsequently, a further partial metallic layer h) is applied to this layer, but the above-described steps of the pretreatment and the application of an adhesion promoter are not carried out during the production of the layer, provided that the lowest adhesion in the structure between the layers g) and h) should be present.
As a result, a weaker adhesion of the metallic layer is achieved on the underlying layer, it forms here a weakening in the composite, a so-called predetermined breaking point.

Die Funktion des Sicherheitselements beruht auf zwei Metallisierungen, die so überlagert werden, dass nur die obere Metallisierung (mit der ersten optisch aktiven Struktur) sichtbar ist und erst nach Manipulation die zweite Metallisierung (eventuell mit einer weiteren optisch aktiven Struktur) in Erscheinung tritt.The function of the security element is based on two metallizations, which are superimposed so that only the upper metallization (with the first optically active structure) is visible and only after manipulation the second metallization (possibly with a further optically active structure) appears.

Vorzugsweise sind partielle metallische Schichten c) und h) deckungsgleich, sie können aber auch einander teilweise überlappend angeordnet sein oder einander ergänzen, sodass vor der Manipulation der Eindruck einer durchgehenden Metallisierung entsteht. Die Schichten können zu der/den optisch aktive(n) Struktur(en) deckungsgleich, aber auch teilweise überlappend angeordnet sein.Preferably, partial metallic layers c) and h) are congruent, but they can also be arranged partially overlapping each other or complement each other, so that before the manipulation the impression of a continuous metallization arises. The layers can be arranged congruently to the optically active structure (s) but also partially overlapping.

Anschließend kann der Aufbau mit einer Schutzlackschicht und/oder einer Klebebeschichtung zum Aufbringen auf ein Substrat versehen werden.Subsequently, the structure can be provided with a protective lacquer layer and / or an adhesive coating for application to a substrate.

Die Klebebeschichtung kann eine Selbstklebebeschichtung, eine Kalt- oder Heißsiegelbeschichtung sein.The adhesive coating may be a self-adhesive coating, a cold or heat seal coating.

In einer Ausführungsform (Fig. 1) sind beide metallisierten Bereiche identisch und registergenau überlagert. Weiters liegt zwischen erster und zweiter Metallisierung eine versteckte Prägung, die erst nach einer Manipulation sichtbar wird. Auf dem Substrat bleibt die untere Metallisierung mit dem Hologramm "FALSCH" zurück. Das erste Hologramm wird abgezogen.In one embodiment ( Fig. 1 ) Both metallized areas are identical and superimposed in register. Furthermore, there is a hidden character between the first and second metallization, which becomes visible only after a manipulation. On the substrate, the lower metallization with the hologram "FALSE" remains. The first hologram is subtracted.

In einer weiteren Ausführungsform (Fig. 2) ist unter der ersten partiellen metallischen Schicht c) (inkl. Prägung) noch eine weitere partielle Schicht (z.B. in Form von Buchstaben oder die Buchstaben als Aussparungen definierend) versteckt, die erst sichtbar wird wenn eine Manipulation erfolgt. Nach dem Abziehen bleiben am Substrat metallisierte Buchstaben "FALSCH" zurück. Das Haupthologramm wird abgezogen.In a further embodiment ( Fig. 2 ) is under the first partial metallic layer c) (including embossing) yet another partial layer (eg in the form of letters or the letters defining as recesses) hidden, which becomes visible only when a manipulation takes place. After stripping, metallized letters "FALSE" remain on the substrate. The main hologram is subtracted.

Sind in den Schichten b) und g) jeweils optisch aktive Strukturen eingebracht, so können diese registergenau zueinander oder zumindest teilweise überlappend eingebracht sein.If in each case optically active structures are introduced in the layers b) and g), then these can be introduced in register with each other or at least partially overlapping.

Die optisch aktive Struktur kann ggf. eine zusätzlich Information enthalten, sodass auch nach der Manipulation ein Authentizitätsnachweis möglich ist.The optically active structure may optionally contain additional information, so that a proof of authenticity is also possible after the manipulation.

Als zusätzliche Informationen können beispielsweise Produkt-Codes, Chargennummern und dergleichen eingebracht sein.As additional information, for example, product codes, lot numbers and the like may be incorporated.

Ferner kann die erfindungsgemäße Sicherheitsfolie weitere Sicherheitsmerkmale, wie elektrisch leitfähige Schichten, Schichten mit magnetischen oder optischen Merkmalen (beispielsweise lumineszierende Merkmale, thermochrome Merkmale, Perlglanzschichten und dergleichen) aufweisen.Furthermore, the security film according to the invention can have further security features, such as electrically conductive layers, layers with magnetic or optical features (for example luminescent features, thermochromic features, pearlescent layers and the like).

In den Figuren bedeuten

  • A den zu sichernden Datenträger oder die Verpackung
  • B und die C die alternativen Bereiche starker Haftung
  • D die Sollbruchstelle
  • 1 ein erstes Trägersubstrat
  • 2 eine erste strahlungshärtbare Lackschicht, in die eine optisch aktive Struktur eingebracht ist,
  • 3 eine erste (partielle) metallische Schicht
  • 4 eine Schutzlackschicht
  • 5 eine Klebeschicht
  • 6 ein zweites Trägersubstrat
  • 7 eine zweite strahlungshärtbare Lackschicht
  • 8 eine zweite (partielle) metallische Schicht
  • 9 eine Schutzlackschicht
  • 10 eine Klebebeschichtung
  • 11 eine partielle opake Schicht.
In the figures mean
  • A the data medium to be backed up or the packaging
  • B and the C the alternative areas of strong adhesion
  • D the breaking point
  • 1 a first carrier substrate
  • FIG. 2 shows a first radiation-curable lacquer layer into which an optically active structure has been introduced, FIG.
  • 3 a first (partial) metallic layer
  • 4 a protective lacquer layer
  • 5 an adhesive layer
  • 6 a second carrier substrate
  • 7 a second radiation-curable lacquer layer
  • 8 a second (partial) metallic layer
  • 9 a protective lacquer layer
  • 10 an adhesive coating
  • 11 a partial opaque layer.

Die erfindungsgemäße Sicherheitsfolie kann als Sicherheitselement auf Datenträgern oder Verpackungen, als Sicherheitsetikett zur Sicherung von Gegenständen oder Verpackungen oder als Vignette verwendet werden.The security film according to the invention can be used as a security element on data carriers or packaging, as a security label for securing objects or packaging or as a vignette.

Claims (9)

  1. Security foil comprising two or more carrier substrates which have at least one optically active structure and at least two metallic layers, characterized in that the security foil is built up as follows:
    a) a first carrier substrate
    b) a first radiation-curable paint layer based on a polyester, an epoxy or polyurethane system which contains two or more different photo-initiators, or a water-dilutable paint based on polyesters, into which an optically active structure in the form of a hologram, a surface relief, a diffractive structure, a diffraction grating or a kinegram is introduced
    c) a first metallic layer
    d) a protective paint layer
    e) an adhesive layer
    f) a second carrier substrate
    g) a second radiation-curable paint layer
    h) a second metallic layer
    i) if appropriate, a protective paint layer
    k) if appropriate, an adhesive coating,
    wherein the adhesion between the layers g) and h) or f) and g) is significantly lower than the adhesion between the remaining layers, wherein, for the case in which adhesion between layer f) and g) is substantially lower than the adhesion between the remaining layers, the second carrier substrate f) used is a plastic film made of PI, PP, MOPP, PE, PPS, PEEK, PEK, PEI, PSU, PAEK, LCP, PEN, PBT, PET, PA, PC, COC, POM, ABS, PVC, fluoropolymers such as Teflon, and wherein, for the case in which adhesion between the layers g) and h) is substantially lower than the adhesion between the remaining layers, the second carrier substrate f) used is a foil provided with an adhesion promoter (plastic film) or an acrylate-coated plastic film.
  2. Security foil according to Claim 1, characterized in that the layer g) has an optically active structure.
  3. Security foil according to Claims 1 to 2, characterized in that the optically active structure is a hologram, a surface relief, a diffractive structure, a diffraction grating or a kinegram.
  4. Security foil according to one of Claims 1 to 3, characterized in that a further partial opaque layer is present between layer g) and h).
  5. Security foil according to one of Claims 1 to 4, characterized in that the layers c) and h) are full-area or partial layers.
  6. Security foil according to Claim 5, characterized in that the partial layers c) and h) are arranged to cover one another in accurate register or at least partially overlapping in relation to one another and/or in relation to the optically active structure(s).
  7. Security foil according to one of Claims 1 to 6, characterized in that the optically active structures introduced into the layers b) and g) are introduced in accurate register with one another or at least partly overlapping.
  8. Security foil according to one of Claims 1 to 7, characterized in that the security foil has further full-area or partial layers with electrically conductive, magnetic or optical features.
  9. Use of the security foil according to one of Claims 1 to 8 as a security element on data storage media or packages, as a security label for securing objects or packages or as a vignette.
EP10711997.6A 2009-03-09 2010-03-05 Security foil or security label comprising a manipulation detection system Active EP2406074B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI201030498T SI2406074T1 (en) 2009-03-09 2010-03-05 Security foil or security label comprising a manipulation detection system
PL10711997T PL2406074T3 (en) 2009-03-09 2010-03-05 Security foil or security label comprising a manipulation detection system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0037309A AT507975B1 (en) 2009-03-09 2009-03-09 SAFETY FOIL OR SAFETY LABEL WITH MANIPULATION CERTIFICATE
PCT/EP2010/001373 WO2010102755A1 (en) 2009-03-09 2010-03-05 Security foil or security label comprising a manipulation detection system

Publications (2)

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EP2406074A1 EP2406074A1 (en) 2012-01-18
EP2406074B1 true EP2406074B1 (en) 2013-11-06

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US (1) US8857856B2 (en)
EP (1) EP2406074B1 (en)
JP (1) JP5684155B2 (en)
CN (1) CN102271910B (en)
AT (1) AT507975B1 (en)
ES (1) ES2441342T3 (en)
MX (1) MX2011009492A (en)
MY (1) MY166968A (en)
PL (1) PL2406074T3 (en)
RU (1) RU2537600C2 (en)
SI (1) SI2406074T1 (en)
UA (1) UA102012C2 (en)
WO (1) WO2010102755A1 (en)

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MX2011009492A (en) 2011-10-11
PL2406074T3 (en) 2014-04-30
AT507975B1 (en) 2011-12-15
MY166968A (en) 2018-07-26
JP5684155B2 (en) 2015-03-11
SI2406074T1 (en) 2014-02-28
RU2537600C2 (en) 2015-01-10
AT507975A1 (en) 2010-09-15
RU2011135083A (en) 2013-04-20
ES2441342T3 (en) 2014-02-04
WO2010102755A1 (en) 2010-09-16
US8857856B2 (en) 2014-10-14
CN102271910B (en) 2015-02-18
JP2012519610A (en) 2012-08-30
US20110291399A1 (en) 2011-12-01
UA102012C2 (en) 2013-05-27
CN102271910A (en) 2011-12-07
EP2406074A1 (en) 2012-01-18

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