EP2251207B1 - Method for the manufacture of a safety marker - Google Patents

Method for the manufacture of a safety marker Download PDF

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Publication number
EP2251207B1
EP2251207B1 EP09006340.5A EP09006340A EP2251207B1 EP 2251207 B1 EP2251207 B1 EP 2251207B1 EP 09006340 A EP09006340 A EP 09006340A EP 2251207 B1 EP2251207 B1 EP 2251207B1
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EP
European Patent Office
Prior art keywords
layers
layer
partial
alloys
metals
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Application number
EP09006340.5A
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German (de)
French (fr)
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EP2251207A1 (en
Inventor
Gottfried Brandstetter
Jürgen Keplinger
Marco Mayrhofer
Matthias Müller
Martin Bergsmann
Klaus Schmidegg
Stephan Trassl
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Hueck Folien GmbH
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Hueck Folien GmbH
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Priority to EP09006340.5A priority Critical patent/EP2251207B1/en
Priority to PCT/EP2010/000818 priority patent/WO2010130301A1/en
Publication of EP2251207A1 publication Critical patent/EP2251207A1/en
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Publication of EP2251207B1 publication Critical patent/EP2251207B1/en
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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
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
    • D21H21/42—Ribbons or strips
    • 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
    • B42D25/355—Security threads
    • 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
    • B42D25/405—Marking
    • B42D25/43—Marking by removal of material
    • B42D2033/10—
    • B42D2035/24—

Definitions

  • the invention relates to a method for producing a security feature according to the preamble of claim 1.
  • Security elements with visually visible features are, for example, off EP 0330733 A1 known.
  • Security elements in particular security threads consisting of a translucent plastic film, an opaque coating extending over the entire security element and having recesses in the form of the coding to be introduced, in particular in the form of characters and patterns, are described. At least in the areas defined by the cutouts, congruent coloring and / or luminescent substances can be present, through which the coding differs from the opaque coating under the corresponding influence of light in a color-contrasting form. From the EP1291463 A1 it has become known to realize a partial metallization of a metal layer by washing out a washing color applied under the metal layer.
  • a further metal layer which serves as an adhesion promoter and which appears transparent in transmitted light can be provided.
  • a further metal layer which serves as an adhesion promoter and which appears transparent in transmitted light. From the DE102007055112 it has become known to combine a partial metal layer and a partial color effect layer with one another. From the WO2004087437A1 it has become known to print two layers side by side.
  • the object of the invention was to provide a method for producing a security feature which has different partial optical features on the front and back, which are interrupted by cutouts, these cutouts producing a clear, sharply delimited image in transmitted light, and to create such a security feature .
  • the subject matter of the invention is therefore a method for producing a security feature according to claim 1 and a security feature according to claim 2.
  • Carrier films for example, preferably flexible plastic films, for example made of PI1 PP, OPP, PE, PPS, PEEK, PEK, PEI, PSU, PAEK, LCP, PEN, PBT, PET, PA, PC, COC, POM, ABS, PVC, are used as the carrier substrate Fluoropolymers such as Teflon and the like.
  • the carrier foils preferably have a thickness of 4-700 ⁇ m, preferably 4-200 ⁇ m, particularly preferably 4-125 ⁇ m.
  • the carrier substrate can already have a layer with a structured lacquer layer.
  • the lacquer layer can be a radiation-curable lacquer layer or a thermoplastic lacquer layer mixed with stabilizers, into which a structure, for example a surface relief, a diffraction structure, a diffraction grating or a hologram is embossed by means of known methods.
  • the structure is then stabilized, for example by electromagnetic radiation, or by curing the thermoplastic lacquer layer, which is influenced by the stabilizers.
  • At least 2 partial layers are applied to this carrier substrate.
  • metals, metal compounds or alloys come into consideration.
  • metals for example, Al, Cu, Fe, Ag, Au, Cr, Ni, Zn, Cd, Bi, Sn and the like come into question.
  • metal compounds are oxides or sulfides or chromates of metals, in particular TiO2, Cr oxides, ZnS, ITO, Bi oxide, ATO, FTO, ZnO, Al2O3, non-stoichiometric aluminum oxide, Zn chromate, Fe oxides, Cu oxides, unstoichiometric Cu oxide, Ag oxides and the like or silicon oxides are suitable.
  • Suitable alloys are, for example, Cu-Al alloys, Cu-Zn alloys, iron alloys, steel, for example Cr-Ni steel and the like.
  • the vapor-deposited metal compounds can also be used Be doped with rare earth metals. As a result, in addition to the desired color, a luminescence effect is also obtained. Furthermore, for example, copper color pigments such as azurite or malachite can be vapor-deposited.
  • the layer thickness of the vapor-deposited layer depends essentially on the desired color. For example, a Bi-oxide layer with a thickness of at least 160-230 nm, as well as a T ⁇ O2 layer appear blue transparent, a ZnS layer green, a Cd layer yellow, an Al layer in connection with F ⁇ 2 ⁇ 3 orange to purple-red, the hue being through the Energy input is controlled. If Cu is vapor-deposited with an excess of oxygen, the coating appears blue. Vaporized ZnO appears reddish transparent. The resulting color is the result of the interplay of layer thickness and absorption behavior.
  • a solvent-soluble material application is applied to one side of the carrier substrate in a first step, this layer is optionally treated using an inline plasma, corona or flame process in a second step, and the layers one after the other in a third step applied, whereupon in a fourth step the material application with the layers located in the area of the material application is removed simultaneously by means of a solvent, optionally combined with a mechanical action.
  • the material application can be applied by any desired method, for example by gravure printing, flexographic printing, screen printing, digital printing and the like.
  • the material used for this purpose or the lacquer used or the paint used is soluble in a solvent, preferably in water, but a paint which is soluble in any solvent, for example in alcohol, esters and the like, can also be used.
  • the material or the lacquer or the paint can be customary compositions based on natural or artificial macromolecules.
  • the soluble material can be pigmented or non-pigmented. All known pigments can be used as pigments. TiO2, ZnS1 kaolin and the like are particularly suitable.
  • the treatment then takes place using an inline plasma (low-pressure or atmospheric plasma), corona or flame process.
  • High-energy plasma for example Ar or Ar / 02 plasma, cleans the surface of any residual toning that may be present.
  • the necessary sharp delimitation of the contours of the recesses is also achieved for partial application.
  • 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 an adhesion promoter, for example by sputtering or vapor deposition.
  • Cr1 Al1 Ag, Ti1 Cu, Ti02, Si oxides or chromium oxides are particularly suitable.
  • 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. This further improves the adhesion of the subsequent coating to the carrier substrate.
  • the coating can take place in the usual way, by deposition in a PVD or CVD process, by sputtering or the like.
  • the coating is applied under vacuum (up to 10 -12 mbar, preferably 10 -2 to 10 -6 mbar) at a temperature dependent on the vapor pressure and the thickness of the coating to be applied on the carrier substrate, for example by thermal evaporation, electric arc or Electron beam evaporation deposited.
  • vacuum up to 10 -12 mbar, preferably 10 -2 to 10 -6 mbar
  • the coating is applied by AC or DC sputtering, the corresponding method being selected depending on the thickness of the layer to be applied and the material used.
  • separating layers for example insulators, polymer layers and the like, can optionally be applied inline or in a separate process step between the individual layers.
  • the substances to be applied are introduced into a vacuum coating system in the form of gaseous (e.g. organometallic) precursors by means of an inert carrier gas (e.g. N 2 , argon), broken up by the input of energy and made to react. Some of the reaction products condense on the substrate and form the desired layer there, the remaining reaction products are removed using a vacuum system.
  • Gaseous precursors can be, for example, CO, CO 2 , oxygen, silanes, methane, ammonia, ferrocene, trimethylaluminum, or the like.
  • the energy can be introduced, for example, by means of an ion or electron beam, a plasma or via an elevated temperature. In this way, several reactive layers can be applied simultaneously or one after the other, creating a color effect on the carrier substrate.
  • the material application is then removed using a suitable solvent that is matched to the composition of the material application.
  • the material application is preferably water-soluble. If necessary, the detachment can be supported by mechanical action.
  • a thin pigmented color layer or a pure pigment layer can be applied in register, the thickness of this layer being about 0.01-5 ⁇ m.
  • the method described can also be carried out several times in succession, if necessary with different layer combinations. If necessary, a protective layer can be applied between the different layer combinations.
  • the security feature can optionally have further layers, for example the diffractive structures already mentioned, but also preferably partial liquid-crystalline layers, layers with optical features, for example colored layers, luminescent layers and / or layers with electrically conductive and / or magnetic features.
  • the security feature according to the invention can optionally have further auxiliary layers, such as laminating adhesive layers, hot / cold seal or self-adhesive layers, release layers and the like.
  • the security features according to the invention are, if necessary, after appropriate packaging (for example in threads, tapes, strips, patches or other formats) as security features for at least partial embedding in or for application on data carriers, in particular documents of value such as ID cards, cards, banknotes or labels, seals and the like , but also in packaging materials for sensitive goods such as pharmaceuticals, cosmetics, data carriers, electronic components and the like.
  • the security features according to the invention can be used particularly advantageously for at least partially closing openings in data carriers and documents of value.
  • the security element is visible both from the front and in the opening from the rear, and the different color impressions on the front and rear are clearly recognizable and distinguishable.
  • the color impression on both sides is particularly advantageous when it is glued to a transparent or translucent carrier.
  • Example 3 Strips for bank notes with a recess

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Laminated Bodies (AREA)

Description

Die Erfindung betrifft ein Verfahren zur Herstellung eines Sicherheitsmerkmals gemäß dem Oberbegriff von Anspruch 1.The invention relates to a method for producing a security feature according to the preamble of claim 1.

Sicherheitselemente mit sogenannten Durchsichtsregistern, also im Durchlicht erkennbaren Aussparungen sind bekannt.Security elements with so-called see-through registers, that is to say cutouts that can be seen in transmitted light, are known.

Sicherheitselemente mit visuell sichtbaren Merkmalen sind beispielsweise aus EP 0330733 A1 bekannt. Es sind Sicherheitselemente, insbesondere Sicherheitsfäden bestehend aus einer lichtdurchlässigen Kunststofffolie, einer sich über das gesamte Sicherheitselement erstreckenden opaken Beschichtung, die Aussparungen in Form der einzubringenden Kodierung, insbesondere in Form von Zeichen und Mustern aufweist, beschrieben. Zumindest in den durch die Aussparungen definierten Bereichen können deckungsgleich farbgebende und/oder lumineszierende Substanzen vorhanden sein, durch die sich die Codierung von der opaken Beschichtung unter entsprechendem Lichteinfluss in farblich kontrastierender Form unterscheidet. Aus der EP1291463 A1 ist es bekannt geworden, eine partielle Metallisierung einer Metallschicht durch Auswaschen einer unter der Metallschicht aufgetragenen Waschfarbe zu realisieren. Zudem kann eine weitere als Haftvermittler dienende im Durchlicht transparent erscheinende Metallschicht vorgesehen sein. Aus der DE102007055112 ist es bekannt geworden, eine partielle Metallschicht sowie eine partielle Farbeffektschicht miteinander zu kombinieren. Aus der WO2004087437A1 ist es bekannt geworden, zwei Schichten nebeneinander aufzudrucken.Security elements with visually visible features are, for example, off EP 0330733 A1 known. Security elements, in particular security threads consisting of a translucent plastic film, an opaque coating extending over the entire security element and having recesses in the form of the coding to be introduced, in particular in the form of characters and patterns, are described. At least in the areas defined by the cutouts, congruent coloring and / or luminescent substances can be present, through which the coding differs from the opaque coating under the corresponding influence of light in a color-contrasting form. From the EP1291463 A1 it has become known to realize a partial metallization of a metal layer by washing out a washing color applied under the metal layer. In addition, a further metal layer which serves as an adhesion promoter and which appears transparent in transmitted light can be provided. From the DE102007055112 it has become known to combine a partial metal layer and a partial color effect layer with one another. From the WO2004087437A1 it has become known to print two layers side by side.

Aufgabe der Erfindung war es, ein Verfahren zur Herstellung eines Sicherheitsmerkmals, das auf Vorder- und Rückseite unterschiedliche partielle optische Merkmale aufweist, die durch Aussparungen unterbrochen sind, wobei diese Aussparungen im Durchlicht ein eindeutiges scharf begrenztes Bild ergeben, bereitzustellen sowie ein derartiges Sicherheitsmerkmal zu schaffen.The object of the invention was to provide a method for producing a security feature which has different partial optical features on the front and back, which are interrupted by cutouts, these cutouts producing a clear, sharply delimited image in transmitted light, and to create such a security feature .

Gegenstand der Erfindung ist daher ein Verfahren zur Herstellung eines Sicherheitsmerkmals gemäß Anspruch 1 sowie ein Sicherheitsmerkmal gemäß Anspruch 2.The subject matter of the invention is therefore a method for producing a security feature according to claim 1 and a security feature according to claim 2.

Als Trägersubstrat kommen beispielsweise Trägerfolien, vorzugsweise flexible Kunststofffolien, beispielsweise aus PI1 PP, OPP, 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 4 - 700 µm, bevorzugt 4 - 200 µm, besonders bevorzugt 4 - 125 µm auf.Carrier films, for example, preferably flexible plastic films, for example made of PI1 PP, OPP, PE, PPS, PEEK, PEK, PEI, PSU, PAEK, LCP, PEN, PBT, PET, PA, PC, COC, POM, ABS, PVC, are used as the carrier substrate Fluoropolymers such as Teflon and the like. The carrier foils preferably have a thickness of 4-700 μm, preferably 4-200 μm, particularly preferably 4-125 μm.

Das Trägersubstrat kann bereits eine Schicht mit einer strukturierten Lackschicht aufweisen. Die Lackschicht kann eine strahlungshärtbare Lackschicht oder eine thermoplastische, mit Stabilisatoren versetzte Lackschicht sein, in die mittels bekannter Verfahren eine Struktur, beispielsweise ein Oberflächenrelief, eine Beugungsstruktur, ein Beugungsgitter oder ein Hologramm eingeprägt wird. Die Struktur wird anschließend stabilisiert, beispielsweise durch elektromagnetische Strahlung, oder durch Aushärtung der thermoplastischen Lackschicht, die durch die Stabilisatoren beeinflusst wird.The carrier substrate can already have a layer with a structured lacquer layer. The lacquer layer can be a radiation-curable lacquer layer or a thermoplastic lacquer layer mixed with stabilizers, into which a structure, for example a surface relief, a diffraction structure, a diffraction grating or a hologram is embossed by means of known methods. The structure is then stabilized, for example by electromagnetic radiation, or by curing the thermoplastic lacquer layer, which is influenced by the stabilizers.

Auf dieses Trägersubstrat werden mindestens 2 partielle Schichten aufgebracht.At least 2 partial layers are applied to this carrier substrate.

Erfindungsgemäß kommen Metalle, Metallverbindungen oder Legierungen in Frage.According to the invention, metals, metal compounds or alloys come into consideration.

Als Metalle kommen beispielsweise Al, Cu, Fe, Ag, Au, Cr, Ni, Zn, Cd, Bi, Sn und dergleichen in Frage. Als Metallverbindungen sind beispielsweise Oxide oder Sulfide oder Chromate von Metallen, insbesondere Tiθ2, Cr-Oxide, ZnS, ITO, Bi-Oxid, ATO, FTO, ZnO, Al2O3, unstöchiometrisches Aluminiumoxid, Zn-Chromat, Fe-Oxide, Cu-Oxide, unstöchiometrisches Cu-Oxid, Ag-Oxide und dergleichen oder Siliciumoxide geeignet. Geeignete Legierungen sind beispielsweise Cu-Al Legierungen, Cu-Zn Legierungen, Eisenlegierungen, Stahl, beispielsweise Cr-Ni-Stahl und dergleichen.As metals, for example, Al, Cu, Fe, Ag, Au, Cr, Ni, Zn, Cd, Bi, Sn and the like come into question. Examples of metal compounds are oxides or sulfides or chromates of metals, in particular TiO2, Cr oxides, ZnS, ITO, Bi oxide, ATO, FTO, ZnO, Al2O3, non-stoichiometric aluminum oxide, Zn chromate, Fe oxides, Cu oxides, unstoichiometric Cu oxide, Ag oxides and the like or silicon oxides are suitable. Suitable alloys are, for example, Cu-Al alloys, Cu-Zn alloys, iron alloys, steel, for example Cr-Ni steel and the like.

Gegebenenfalls können die aufgedampften Metallverbindungen auch mit Seltenerdmetallen dotiert sein. Dadurch erhält man neben der gewünschten Farbe zusätzlich einen Lumineszenzeffekt. Ferner können beispielsweise Kupfer-Farbpigmente, wie Azurit oder Malachit aufgedampft werden.If necessary, the vapor-deposited metal compounds can also be used Be doped with rare earth metals. As a result, in addition to the desired color, a luminescence effect is also obtained. Furthermore, for example, copper color pigments such as azurite or malachite can be vapor-deposited.

Die Schichtdicke der aufgedampften Schicht richtet sich im Wesentlichen nach der gewünschten Farbe. So erscheint beispielsweise eine etwa mindestens 160 - 230 nm dicke Bi-Oxidschicht, ebenso wie eine TÏO2 Schicht blau transparent, eine ZnS-Schicht grün, eine CdSchicht gelb, eine AI-Schicht in Verbindung mit Fβ2θ3 orange bis purpurrot, wobei der Farbton durch den Energieeintrag gesteuert wird. Wird Cu unter Sauerstoffüberschuss aufgedampft erscheint die Beschichtung blau. Aufgedampftes ZnO erscheint rötlich transparent. Die resultierende Farbe entsteht dabei aus dem Zusammenspiel von Schichtdicke und Absorptionsverhalten.The layer thickness of the vapor-deposited layer depends essentially on the desired color. For example, a Bi-oxide layer with a thickness of at least 160-230 nm, as well as a TÏO2 layer appear blue transparent, a ZnS layer green, a Cd layer yellow, an Al layer in connection with Fβ2θ3 orange to purple-red, the hue being through the Energy input is controlled. If Cu is vapor-deposited with an excess of oxygen, the coating appears blue. Vaporized ZnO appears reddish transparent. The resulting color is the result of the interplay of layer thickness and absorption behavior.

Zur Aufbringung der partiellen Schichten wird dabei in einem ersten Schritt auf einer Seite des Trägersubstrats ein in einem Lösungsmittel löslicher Materialauftrag aufgebracht, in einem zweiten Schritt diese Schicht gegebenenfalls mittels eines Inline-Plasma-, Coronaoder Flammprozesses behandelt wird und in einem dritten Schritt die Schichten nacheinander aufgebracht, worauf in einem vierten Schritt der Materialauftrag mit den im Bereich des Materialauftrags befindlichen Schichten gleichzeitig mittels eines Lösungsmittels, gegebenenfalls kombiniert mit einer mechanischen Einwirkung entfernt.To apply the partial layers, a solvent-soluble material application is applied to one side of the carrier substrate in a first step, this layer is optionally treated using an inline plasma, corona or flame process in a second step, and the layers one after the other in a third step applied, whereupon in a fourth step the material application with the layers located in the area of the material application is removed simultaneously by means of a solvent, optionally combined with a mechanical action.

Die Aufbringung des Materialauftrags kann durch ein beliebiges Verfahren, beispielsweise durch Tiefdruck, Flexodruck, Siebdruck, Digitaldruck und dergleichen erfolgen. Das hierzu verwendete Material bzw. der verwendete Lack bzw. die verwendete Farbe 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. Das Material bzw. der Lack bzw. die Farbe können übliche Zusammensetzungen auf Basis von natürlichen oder künstlichen Makromolekülen sein. Das lösliche Material kann pigmentiert oder nicht pigmentiert sein. Als Pigmente können alle bekannten Pigmente verwendet werden. Besonders geeignet sind Ti02, ZnS1 Kaolin und dergleichen.The material application can be applied by any desired method, for example by gravure printing, flexographic printing, screen printing, digital printing and the like. The material used for this purpose or the lacquer used or the paint used is soluble in a solvent, preferably in water, but a paint which is soluble in any solvent, for example in alcohol, esters and the like, can also be used. The material or the lacquer or the paint can be customary compositions based on natural or artificial macromolecules. The soluble material can be pigmented or non-pigmented. All known pigments can be used as pigments. TiO2, ZnS1 kaolin and the like are particularly suitable.

Anschließend erfolgt die Behandlung mittels eines Inline-Plasma (Niederdruck- oder Atmosphärenplasma-), Corona- oder Flammprozesses. Durch energiereiches Plasma, beispielsweise Ar oder Ar/02-Plasma wird die Oberfläche von eventuell vorhandenen Tonungsresten gereinigt. Dabei wird auch für eine partielle Aufbringung die notwendige scharfe Abgrenzung der Konturen der Aussparungen, erreicht. 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.The treatment then takes place using an inline plasma (low-pressure or atmospheric plasma), corona or flame process. High-energy plasma, for example Ar or Ar / 02 plasma, cleans the surface of any residual toning that may be present. The necessary sharp delimitation of the contours of the recesses is also achieved for partial application. At the same time the surface is activated. 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 Plasmabzw. Coronaoder Flammbehandlung eine dünne Metall oder Metalloxidschicht als Haftvermittler, beispielsweise durch Sputtern oder Aufdampfen aufgebracht werden. Besonders geeignet sind dabei Cr1 Al1 Ag, Ti1 Cu, Ti02, Si-Oxide oder Chromoxide. Diese Haftvermittlerschicht weist im allgemeinen eine Dicke von 0,1 nm - 5nm, vorzugsweise 0,2 nm - 2nm, besonders bevorzugt 0,2 bis 1 nm auf. Dadurch wird die Haftung der nachfolgenden Beschichtung auf dem Trägersubstrat weiter verbessert.If necessary, at the same time as the application of the Plasmabzw. Corona or flame treatment, a thin metal or metal oxide layer can be applied as an adhesion promoter, for example by sputtering or vapor deposition. Cr1 Al1 Ag, Ti1 Cu, Ti02, Si oxides or chromium oxides are particularly suitable. 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. This further improves the adhesion of the subsequent coating to the carrier substrate.

Die Beschichtung kann dabei auf übliche Weise, durch Abscheiden in einem PVD- oder CVD-Verfahren, durch Sputtern oder dergleichen erfolgen.The coating can take place in the usual way, by deposition in a PVD or CVD process, by sputtering or the like.

In einem PVD- Verfahren wird die Beschichtung unter Vakuum (bis 10-12 mbar, vorzugsweise 10-2 bis 10-6 mbar) bei einer vom Dampfdruck und der Dicke der aufzubringenden Beschichtung abhängigen Temperatur auf dem Trägersubstrat beispielsweise durch thermisches Verdampfen, Lichtbogen- oder Elektronenstrahlverdampfen abgeschieden. Eine weitere Möglichkeit ist das Aufbringen der Beschichtung durch AC- oder DC-Sputtern, wobei je nach Dicke der aufzubringenden Schicht und eingesetztem Material das entsprechende Verfahren gewählt wird.In a PVD process, the coating is applied under vacuum (up to 10 -12 mbar, preferably 10 -2 to 10 -6 mbar) at a temperature dependent on the vapor pressure and the thickness of the coating to be applied on the carrier substrate, for example by thermal evaporation, electric arc or Electron beam evaporation deposited. Another possibility is to apply the coating by AC or DC sputtering, the corresponding method being selected depending on the thickness of the layer to be applied and the material used.

Sollen mehrere Schichten aufgebracht werden, können gegebenenfalls zwischen den einzelnen Schichten Trennschichten, beispielsweise Isolatoren, Polymerschichten und dergleichen inline oder in einem getrennten Verfahrensschritt aufgebracht werden.If several layers are to be applied, separating layers, for example insulators, polymer layers and the like, can optionally be applied inline or in a separate process step between the individual layers.

In einem CVD-Verfahren werden die aufzubringenden Stoffe in Form von gasförmigen (z.B. organometallischen) Vorläuferverbindungen (sogenannten Precursoren) mittels eines inerten Trägergases (z.B. N2, Argon) in ein Vakuumbeschichtungssystem eingebracht, durch Eintrag von Energie aufgebrochen und zur Reaktion gebracht. Ein Teil der Reaktionsprodukte kondensiert auf dem Substrat und bildet dort die gewünschte Schicht, die übrigen Reaktionsprodukte werden über ein Vakuumsystem entfernt. Gasförmige Precursoren können z.B. CO, CO2, Sauerstoff, Silane, Methan, Ammoniak, Ferrocen, Trimethylaluminium, oder dergleichen sein. Die Einbringung der Energie kann z.B. mittels eines Ionen- oder Elektronenstrahls, eines Plasmas oder über erhöhte Temperatur erfolgen. Auf diese Weise können mehrere reaktive Schichten gleichzeitig oder nacheinander aufgebracht werden, auf dem Trägersubstrat entsteht ein Farbeffekt.In a CVD process, the substances to be applied are introduced into a vacuum coating system in the form of gaseous (e.g. organometallic) precursors by means of an inert carrier gas (e.g. N 2 , argon), broken up by the input of energy and made to react. Some of the reaction products condense on the substrate and form the desired layer there, the remaining reaction products are removed using a vacuum system. Gaseous precursors can be, for example, CO, CO 2 , oxygen, silanes, methane, ammonia, ferrocene, trimethylaluminum, or the like. The energy can be introduced, for example, by means of an ion or electron beam, a plasma or via an elevated temperature. In this way, several reactive layers can be applied simultaneously or one after the other, creating a color effect on the carrier substrate.

Anschließend wird der Materialauftrag durch ein geeignetes Lösungsmittel, das auf die Zusammensetzung des Materialauftrags abgestimmt ist, entfernt. Bevorzugt ist der Materialauftrag wasserlöslich. Gegebenenfalls kann die Ablösung durch mechanische Einwirkung unterstützt werden.The material application is then removed using a suitable solvent that is matched to the composition of the material application. The material application is preferably water-soluble. If necessary, the detachment can be supported by mechanical action.

Um das Anlösen der abgedeckten Schicht weiter zu verbessern, kann auch passergenau eine dünne pigmentierte Farbschicht oder eine reine Pigmentschicht aufgebracht werden, wobei die Dicke dieser Schicht etwa 0,01 - 5 µm beträgt.In order to further improve the dissolving of the covered layer, a thin pigmented color layer or a pure pigment layer can be applied in register, the thickness of this layer being about 0.01-5 µm.

Durch das Ablösen des Materialauftrags mit den über dem Materialauftrag befindlichen Bereichen der Beschichtungen wird die gewünschte partielle Beschichtung mit zu 100% deckungsgleichen Konturen erhalten. Eine derartige Präzision ist bei bekannten zweistufigen Verfahren nicht erreichbar.By detaching the material application with the areas of the coatings located above the material application, the desired partial coating with 100% congruent contours is obtained. Such a precision cannot be achieved with known two-stage processes.

Das beschriebene Verfahren kann auch mehrmals hintereinander ggf. mit unterschiedlichen Schichtkombinationen durchgeführt werden. Gegebenenfalls kann zwischen den unterschiedlichen Schichtkombinationen eine Schutzschicht aufgebracht werden.The method described can also be carried out several times in succession, if necessary with different layer combinations. If necessary, a protective layer can be applied between the different layer combinations.

Das Sicherheitsmerkmal kann gegebenenfalls weitere Schichten aufweisen, beispielsweise die bereits erwähnten diffraktiven Strukturen, aber auch vorzugsweise partielle flüssigkristalline Schichten, Schichten mit optischen Merkmalen, beispielsweise farbige Schichten, lumineszierende Schichten und/oder Schichten mit elektrisch leitfähigen und/oder magnetischen Merkmalen.The security feature can optionally have further layers, for example the diffractive structures already mentioned, but also preferably partial liquid-crystalline layers, layers with optical features, for example colored layers, luminescent layers and / or layers with electrically conductive and / or magnetic features.

Das erfindungsgemäße Sicherheitsmerkmal kann je nach beabsichtigter Verwendung ggf. weitere Hilfsschichten, wie Kaschierklebeschichten, Heiß-Kaltsiegel- oder Selbstklebeschichten, Releaseschichten und dergleichen aufweisen.Depending on the intended use, the security feature according to the invention can optionally have further auxiliary layers, such as laminating adhesive layers, hot / cold seal or self-adhesive layers, release layers and the like.

In den Figuren 1 bis 3 sind erfindungsgemäße Sicherheitsmerkmale dargestellt. Darin bedeuten 1 das Trägersubstrat, 2 den löslichen Materialauftrag, 3, 4, 5, 6, die Schichten mit unterschiedlichen Farbeindrücken.

  • In Fig. 1 ist ein beispielhafter Aufbau vor der Demetallsierung dargestellt.
  • In Fig. 2 ist der in Fig. 1 dargestellte Aufbau nach der Demetallisierung dargestellt.
  • Fig. 3 stellt einen Aufbau mit zwei unterschiedlichen Schichtkombinationen dar.
In the Figures 1 to 3 security features according to the invention are shown. 1 denotes the carrier substrate, 2 the soluble material application, 3, 4, 5, 6, the layers with different color impressions.
  • In Fig. 1 an exemplary structure before demetallization is shown.
  • In Fig. 2 is the in Fig. 1 The structure shown after demetallization.
  • Fig. 3 represents a structure with two different layer combinations.

Die erfindungsgemäßen Sicherheitsmerkmale werden gegebenenfalls nach entsprechender Konfektionierung (beispielsweise zu Fäden, Bändern, Streifen, Patches oder anderen Formaten) daher als Sicherheitsmerkmale zur zumindest teilweisen Einbettung in oder zur Applikation auf Datenträgern, insbesondere Wertdokumenten wie Ausweisen, Karten, Banknoten oder Etiketten, Siegeln und dergleichen, aber auch in Verpackungsmaterialien für sensible Güter, wie Pharmazeutika, Kosmetika, Datenträger, elektronische Bauteile und dergleichen verwendet.The security features according to the invention are, if necessary, after appropriate packaging (for example in threads, tapes, strips, patches or other formats) as security features for at least partial embedding in or for application on data carriers, in particular documents of value such as ID cards, cards, banknotes or labels, seals and the like , but also in packaging materials for sensitive goods such as pharmaceuticals, cosmetics, data carriers, electronic components and the like.

Besonders vorteilhaft können die erfindungsgemäßen Sicherheitsmerkmale zum zumindest teilweisen Verschließen von Durchbrechungen in Datenträgern und Wertdokumenten verwendet werden. In diesem Fall ist das Sicherheitselement sowohl von vorne als auch in der Durchbrechung von der Rückseite sichtbar und die unterschiedlichen Farbeindrücke auf Vorder- und Rückseite sind deutlich erkennbar und unterscheidbar.The security features according to the invention can be used particularly advantageously for at least partially closing openings in data carriers and documents of value. In this case, the security element is visible both from the front and in the opening from the rear, and the different color impressions on the front and rear are clearly recognizable and distinguishable.

In der Ausführung eines Etiketts kommt der beidseitige Farbeindruck besonders vorteilhaft zur Geltung, wenn dieses auf einem transparenten oder transluzenten Träger aufgeklebt wird.In the execution of a label, the color impression on both sides is particularly advantageous when it is glued to a transparent or translucent carrier.

BeispieleExamples Beispiel 1: EtikettExample 1: label

  • PET 36 µmPET 36 µm
  • Al partiellAl partially
  • Cu partiellCu partially
  • KaschierlackLamination varnish
  • PET 23 µmPET 23 µm
  • Selbstklebebeschichtung partiellPartial self-adhesive coating
  • Silikonisierung partiellPartial siliconization
  • TrennpapierRelease paper
Beispiel 2: Folie für AusweisExample 2: Foil for ID

  • PET 15 µmPET 15 µm
  • ReleaseschichtRelease layer
  • HologrammprägungHologram embossing
  • Cu-Oxid - rot partiellCu oxide - red partially
  • Cu partiellCu partially
  • HeißsiegellackHeat seal lacquer
Beispiel 3: Streifen für Banknote mit AussparungExample 3: Strips for bank notes with a recess

  • PET Folie 4,5 µmPET film 4.5 µm
  • Hologramm partiellPartial hologram
  • Al-Oxid schwarz partiellAl oxide black partially
  • Al silber partiellAl silver partially
  • HeißsiegellackHeat seal lacquer

Claims (1)

  1. A method for producing a safety marker having a carrier substrate (1), on which at least two partial layers (3, 4, 5, 6) are applied, characterized in that said layers (3, 4, 5, 6) each have different colors or color impressions and each have at least partially transparent recesses and consist of metals, metal compounds or alloys, wherein the layers (3, 4, 5, 6) are applied absolutely congruently with one another without tolerances, wherein in a first step, a material coating (2) that is soluble in a solvent is applied on one side of the carrier substrate (1),
    in a second step, this layer is treated by means of an inline plasma, corona, or flame process, wherein simultaneously with the plasma, corona, or flame treatment, a thin metal or metal oxide layer is applied as an adhesion promoter, and
    in a third step, the layers (3, 4, 5, 6) having at least two different colors or color impressions and consisting of metals, metal compounds or alloys are successively applied to the material coating (2),
    after which, in a fourth step, for producing the at least partial recesses in the respective layer (3, 4, 5, 6), the material coating (2) with the layers (3, 4, 5, 6) that located in the region of the material coating (2) and have at least two different colors or color impressions and consist of metals, metal compounds or alloys, are simultaneously removed by means of a solvent.
EP09006340.5A 2009-05-11 2009-05-11 Method for the manufacture of a safety marker Active EP2251207B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP09006340.5A EP2251207B1 (en) 2009-05-11 2009-05-11 Method for the manufacture of a safety marker
PCT/EP2010/000818 WO2010130301A1 (en) 2009-05-11 2010-02-10 Safety feature and method for the production thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09006340.5A EP2251207B1 (en) 2009-05-11 2009-05-11 Method for the manufacture of a safety marker

Publications (2)

Publication Number Publication Date
EP2251207A1 EP2251207A1 (en) 2010-11-17
EP2251207B1 true EP2251207B1 (en) 2021-12-01

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Country Link
EP (1) EP2251207B1 (en)
WO (1) WO2010130301A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201301788D0 (en) 2013-02-01 2013-03-20 Rue De Int Ltd Security devices and methods of manufacture thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0490825A1 (en) * 1990-12-12 1992-06-17 - Sihl - Zürcher Papierfabrik An Der Sihl Security paper for banknotes or the same, and method for their manufacture
WO2004087437A1 (en) * 2003-04-04 2004-10-14 Landqart Safety marking

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3610379A1 (en) * 1986-03-27 1987-10-01 Helmuth Schmoock Foil having at least one surface covered by a metal layer, and method and apparatus for its production
ATE100880T1 (en) 1988-03-04 1994-02-15 Gao Ges Automation Org SECURITY ELEMENT IN THE FORM OF A THREAD OR TAPE FOR EMBEDDING IN SECURITY DOCUMENTS AND METHOD OF MAKING THE SAME.
DE4041025C2 (en) * 1990-12-20 2003-04-17 Gao Ges Automation Org Magnetic, metallic security thread with negative writing
DE10143523B4 (en) * 2001-09-05 2008-08-21 Hueck Folien Gesellschaft M.B.H. Process for the preparation of a selectively metallised film
DE102007055112A1 (en) * 2007-01-05 2008-07-10 Giesecke & Devrient Gmbh Producing safety foil for valuable document e.g. check, comprises printing a side of substrate with a printing ink in the form of characters to be produced, applying a coating on the printed side and removing the printing ink

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0490825A1 (en) * 1990-12-12 1992-06-17 - Sihl - Zürcher Papierfabrik An Der Sihl Security paper for banknotes or the same, and method for their manufacture
WO2004087437A1 (en) * 2003-04-04 2004-10-14 Landqart Safety marking

Also Published As

Publication number Publication date
EP2251207A1 (en) 2010-11-17
WO2010130301A1 (en) 2010-11-18

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