EP2420391A2 - Security element with an optically variable layer - Google Patents
Security element with an optically variable layer Download PDFInfo
- Publication number
- EP2420391A2 EP2420391A2 EP11005638A EP11005638A EP2420391A2 EP 2420391 A2 EP2420391 A2 EP 2420391A2 EP 11005638 A EP11005638 A EP 11005638A EP 11005638 A EP11005638 A EP 11005638A EP 2420391 A2 EP2420391 A2 EP 2420391A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- security element
- element according
- optically variable
- security
- 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.)
- Withdrawn
Links
Images
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
- B42D25/373—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
- 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
-
- B42D2033/10—
-
- B42D2033/20—
-
- B42D2033/26—
-
- B42D2035/24—
Definitions
- the invention relates to a security element with an optically variable layer which imparts different color impressions at defined viewing angles.
- Security elements with optically variable layers which impart different color impressions at certain viewing angles or processes for their production, are for example made EP 1 716 007 B or EP 1 558 449 A known.
- WO 2006/040069 A is a security element for securing valuables with an optically variable layer known, which also gives different color impressions from different viewing angles.
- a semitransparent ink layer is arranged in a limited coverage area over the optically variable layer, the color impression of which is adapted to the color impression of the optically variable layer under predetermined viewing conditions.
- this security element Disadvantage of this security element is that the overprinting of a part of the optically variable layer with a color layer, the optionally in the optically variable layer structure in one or more layers integrated recesses in this area are extinguished so to speak and are no longer recognizable.
- Object of the present invention was therefore to provide a corresponding security element with high security against counterfeiting, which avoids the disadvantages of the prior art.
- the invention therefore provides a security element with an optically variable layer which has different color impressions at different viewing angles, characterized in that a colored metallic layer is arranged in a defined area above or next to the optically variable layer, the color impression of this layer being applied to the Color impression of the optically variable layer is adjusted under a defined viewing angle.
- the colored metallic layer consists on the one hand of a layer of a metal compound with a defined thickness and defined optical properties (spectral absorption, refractive index, transparency) and on the other hand of an at least partially reflective metallic layer.
- Suitable metal compounds are transparent or partially transparent materials which have a defined or selective spectral absorption and, ideally, a refractive index> 1.6, in particular, these may be oxides, sulfates or fluorides of metals or semiconductors. Examples are oxides of Ti, Zn, Cu, Zr, Al, Cr, Mg, Hf, Si, Y or Ta, complex oxides such as indium tin oxide (ITO), antimony tin oxide (ATO), fluorine tin Oxide (FTO) or Zn-chromate, as well as ZnS, BaF 2 , MgF 2 , CaF 2 .
- ITO indium tin oxide
- ATO antimony tin oxide
- FTO fluorine tin Oxide
- Zn-chromate ZnS, BaF 2 , MgF 2 , CaF 2 .
- metals such as e.g. Al, Sn, Cu, Zn, Pt, Au, Ag, Cr, Ti, Mo, Fe or their alloys, e.g. Cu-Al, Cu-Sn, Cu-Zn, iron alloys, steel, stainless steel or the like.
- the layers are preferably applied to a carrier substrate or a carrier substrate already coated with other layers by means of a PVD or CVD method.
- the coating is applied under vacuum (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, deposited by thermal evaporation, arc or electron beam evaporation.
- Another possibility is the application of the coating by AC or DC sputtering, wherein the appropriate method is selected depending on the thickness of the layer to be applied and the material used.
- gaseous precursor compounds eg organometallic precursor compounds
- precursors gaseous precursor compounds
- an inert carrier gas eg N 2 , argon
- gaseous precursors can be, for example, CO, CO 2 , oxygen, silanes, methane, ammonia, ferrocene, trimethylaluminum, or the like.
- the introduction of the energy can e.g. by means of an ion or electron beam, a plasma or elevated temperature.
- the light first passes through the metal compound layer, is reflected by the at least partially reflecting metallic layer, and passes through the metal compound layer a second time.
- the color impression is now produced by a defined spectral absorption and interference in the layer of a metal compound in conjunction with the spectral reflection behavior of the underlying at least partially reflective metallic layer.
- the optical properties of the layer of a metal compound are dependent on the selected material, which initially determines the refractive index of the layer.
- a TiO x layer has about a refractive index of 2.2
- a CuO x layer has a refractive index of about 2.0
- MgF 2 has a refractive index of 1.38.
- the absorption is also an intrinsic property of the material and is usually spectrally characteristic, ie the material absorbs more in certain wavelength ranges than in other areas. This is the case, for example, when an absorption edge occurs in the visible range, or when the absorption coefficient increases uniformly with increasing wavelength.
- the absorption coefficient can also be influenced by the stoichiometry of the compound, which in the case of oxides is controlled, for example, by the oxygen partial pressure in the vapor deposition process. If Ti is evaporated in vacuo without the addition of oxygen, a largely opaque layer is formed at thicknesses of 30-50 nm, but upon addition of oxygen during the sputtering process, the transparency steadily increases until a stoichiometric oxide compound (TiO 2 ) is present on the carrier substrate , which has only a small residual absorption at the same layer thickness.
- TiO 2 stoichiometric oxide compound
- the optical thickness ie the product of refractive index (n) and the geometric layer thickness (d) n ⁇ d, in the range of the wavelength of the incident light is (about in the range of 50-2000 nm), it comes to Interference effects due to the partial reflection of the light at the upper and lower boundary of the layer. This results in a wavelength-selective amplification or attenuation of the incident light and thus a color effect that changes with the thickness of the layer. If a specific material, eg TiO x or CuO x with constant stoichiometry and optical properties is used, the color alone can be adjusted via the layer thickness.
- an 80 stops steaming nm thick CuO x layer selectively the green and blue portions and amplifies the yellow portions of the spectrum, while a 160 nm thick CuO x layer of the same composition attenuates the red and blue components and enhances the green components.
- the thickness of the layer of metal compounds is 10 - 700 nm, preferably 20 - 200 nm.
- the color impression of the overall system can also be influenced.
- aluminum has a uniformly high reflection and thus a neutral reflection behavior in the entire visible range.
- Copper on the other hand appears reddish, ie the red parts of the light are reflected more strongly than the blue parts.
- Gold appears yellowish, ie the yellows are reflected more strongly than other wavelengths.
- a 80 nm thick CuO x layer acts when using a 35 nm thick aluminum mirror yellow-reddish, when using a 35 nm thick gold mirror thick bright yellow, and when using a 70 nm Cu-mirror orange-red.
- a 35 nm thick TiOx layer in conjunction with a 200 nm thick Cu mirror appears bright red.
- the thickness of the at least partially reflective metallic layer is between 5 and 500 nm, preferably between 10 and 100 nm.
- Characteristic of such a colored metallic layer is the metallic luster, which arises due to the at least partially reflective metallic layer. This color impression differs significantly from other color effects produced, for example by overprinting and the color impression of an optically variable layer, which also uses a metal mirror, very close.
- the production of partially applied layers is possible, which are characterized in that the color layer, ie the layer of a metal compound, and the mirror layer, ie the at least partially reflective metallic layer, are applied without tolerance to each other and none in the uncoated areas Layer is present. If a counterfeiter attempts to produce this effect by overprinting a metallically lustrous layer with a translucent color, it is only possible to apply the ink as precisely as possible because of the manufacturing tolerances, but nevertheless a color or metal space is always recognizable. The security against forgery of the security feature according to the invention is significantly increased.
- the preparation is preferably carried out by means of a process in which first a soluble, possibly pigmented printing ink is applied, then the layer of a metal compound and the at least partially reflective metallic layer is evaporated and then the ink with the overlying layer sequence under the action of a solvent and, if necessary Removed with mechanical support.
- This method is for example in the EP-A 1 291 463 described, the disclosure of which is included here.
- the colored metallic or the optically variable layer has recesses, for example in the form of characters, symbols, lines, patterns or the like, additional security effects which can be recognized by transmitted or incident light can be achieved.
- the security element has a diffraction structure or if a further layer which has a diffraction structure is provided in the structure, the security can be further increased.
- the optically variable layer may be formed by a thin film structure comprising a reflective layer, a dielectric spacer layer and an absorber layer.
- the optically variable layer may be composed of an electromagnetic wave reflecting layer or a high refractive index (HRI) layer, and a polymeric spacer layer disposed thereon and a layer formed of metallic clusters.
- HRI high refractive index
- Such layer systems and methods for their preparation are for example EP 1 716 007 B or EP 1 558 449 A known, whose contents are included here.
- Each of the layers of this layer structure may have additional properties. Suitable measures for the integration of additional properties are in EP 1 716 007 B whose content is also included here.
- the optically variable layer may be defined by a printed ink layer having color-shifting pigments, such as those of U.S. Pat US 5,171,363 known, or liquid crystals are formed.
- the layer structure takes place on a carrier substrate.
- carrier films are preferably 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 fluorocopolymer), PTFE (polytetrafluoroethylene), PVF (polyvinyl fluoride), PVDF (polyvinylidene fluoride), and EFEP (ethylene tetrafluoroethylene). Hexafluoropropylene fluoropolymer).
- the carrier films preferably have a thickness of 5 to 700 .mu.m, preferably 5 to 200 .mu.
- metal foils for example Al, Cu, Sn, Ni, Fe or stainless steel foils having a thickness of 5-200 ⁇ m, preferably 10 to 80 ⁇ m, particularly preferably 20-50 ⁇ m, may also serve as the carrier substrate.
- the films can also be surface-treated, coated or laminated, for example with plastics, or painted.
- thermally activated paper or composites with paper such as composites with plastics having a basis weight of 20 - 500 g / m 2 , preferably 40 - 200 g / m 2 . be used.
- the reflection layer is preferably formed by an opaque or by a semitransparent metal layer.
- the reflective layer may also have recesses in the form of patterns, characters or codes that form transparent or semi-transparent regions in the thin-film element.
- the dielectric spacer layer is preferably formed by a print layer or by an ultrathin film, in particular a stretched polyester film.
- the absorber layer and / or the spacer layer may also have recesses in the form of patterns, characters, symbols, lines or codes. There is no color shift effect in the recessed areas of the absorber layer or the spacer layer.
- the security element of the invention may additionally comprise a thermoplastic or UV-curable lacquer layer having structures such as diffraction patterns, diffraction gratings, surface reliefs, holograms, kinegrams and the like.
- Such layers with diffraction structures and their production are for example made EP-A 1 352 732 or EP-A 1 310 381 known, the disclosure of which is incorporated herein.
- the security element according to the invention may additionally contain further security features known to the person skilled in the art. Examples are fluorescent, phosphorescent, magnetic, electrically conductive, thermochromic, photochromic features or other optical security features such as e.g. Microlens systems.
- FIGS. 1 to 6 embodiments of the security element according to the invention are shown.
- Fig. 1 shows a schematic representation of a banknote 1 with an at least partially embedded security element 2 and an applied security element 3 respectively according to an embodiment of the present invention.
- Fig. 2a shows the structure of a security element according to the invention 2 (here in the form of a security thread) in supervision, ie when viewed at approximately 90 ° to the surface of the security element.
- the color impression in areas 5 and 6 is different. Both in the region 5 and in the region 6, the recesses 9 and 9a are clearly visible.
- the optically variable layer 7 is visible, in the region 9, the security element is at least partially transparent.
- Fig. 2b shows the same security element under a shallow viewing angle, in which now the color of the security element in area 5 (the so-called tilt color) corresponds to the color of the colored metallic layer in area 6.
- the lettering, which is formed by the recesses 9a, is now no longer visible, since there is no more color contrast.
- Fig. 3 to 6 show cross sections through the security element 2 along the line AA, which has been dispensed proportional representation for reasons of clarity.
- the security thread 2 has a carrier substrate 10, on which initially an optically variable layer 7 is applied.
- the optically variable layer in this embodiment consists of an electromagnetic wave reflecting layer 11 with recesses 9, a polymeric spacer layer 12 and a layer formed of metallic clusters 13.
- a layer of metal compounds 8 is applied to the optically variable layer 7, which in turn has recesses 9a.
- the colored metallic layer 8 in turn consists of the layer of a metal compound 8a and an at least partially reflective metallic layer 8b.
- the optically variable layer 7 When using a transparent substrate 10, the security element appears in the areas 9 at least partially transparent, only one weak absorption by the layer formed by metallic clusters 13 can be seen.
- Fig. 4 shows a further embodiment of the invention with an additional lacquer layer 14, the embossed structures 15 has.
- the application of the layers to the carrier substrate 10 takes place here in the reverse order.
- the lacquer layer 14 is applied to the carrier substrate and provided with an embossing.
- the colored metallic layer 8 is applied so that it appears colored from the side of the carrier substrate 10, ie first the layer of metal compounds 8a and then the at least partially reflective metallic layer 8b is applied.
- the layer is formed of metallic clusters 13, the polymeric spacer layer 12 and the reflective layer 11 applied, which in turn has recesses 9.
- the visual impression corresponds to the layer structure of the security element of Fig. 3 and additionally comprises an optically active security feature in the form of a diffraction structure 15.
- Fig. 5 shows an embodiment of the invention, in which the colored metallic layer 8 is arranged adjacent to the optically variable layer 7.
- the effect which results with a change in the viewing angle is slightly different than in the preceding figures, since in the region of the recesses 9a, the optically variable layer 7 is not visible. Rather, the security element is transparent at this point if a transparent carrier substrate 10 is used. The consideration is in this case from the side facing away from the carrier substrate.
- Fig. 6 shows an embodiment of the invention, in which the colored metallic layer 8 is arranged in register to recesses in the layer of metallic clusters 13 of the optically variable element 7. Again, there are two areas 5 and 6, which convey a visually variable and a constant color impression.
- the consideration of the security element takes place in this embodiment by the carrier substrate 10.
- This Layer sequence has the advantage that the electromagnetic wave reflecting layer 11 can replace the at least partially reflecting metallic layer 8b in the colored metallic layer 8.
- the polymeric spacer layer 12 does not disturb the color impression of the colored metallic layer 8, since it is usually transparent. By combining the absorption properties of the spacer layer 12 and the colored metallic layer 8, however, attractive new color effects may well result.
- an optically variable, a colored metallic or a combination of these two layers can be applied to the second surface of the carrier substrate again.
- the same or a different effect can be achieved.
- the security element can also be protected by a protective lacquer layer or further refined, for example, by laminating or the like.
- the security element with a sealable adhesive such as a hot or cold seal adhesive, or a self-adhesive coating can be applied to the corresponding substrate, or at least partially embedded in paper for security papers by conventional methods, for example, in the paper.
- the security elements according to the invention can, after packaging, be used as security features in data carriers, in particular value documents such as identification cards, banknotes or labels, seals on or as packaging material, for example in the pharmaceutical, electronics and / or food industry, for example in the form of blister foils, folding boxes, covers , Foil wrappers are used.
- value documents such as identification cards, banknotes or labels
- seals on or as packaging material for example in the pharmaceutical, electronics and / or food industry, for example in the form of blister foils, folding boxes, covers , Foil wrappers are used.
Abstract
Description
Die Erfindung betrifft ein Sicherheitselement mit einer optisch variablen Schicht, die unter definierten Betrachtungswinkeln unterschiedliche Farbeindrücke vermittelt.The invention relates to a security element with an optically variable layer which imparts different color impressions at defined viewing angles.
Sicherheitselemente mit optisch variablen Schichten, die unter bestimmten Betrachtungswinkeln unterschiedliche Farbeindrücke vermitteln bzw. Verfahren zu deren Herstellung sind beispielsweise aus
Aus
Nachteil dieses Sicherheitselements ist, dass durch das Überdrucken eines Teils der optisch variablen Schicht mit einer Farbschicht, die gegebenenfalls im optisch variablen Schichtaufbau in einer oder mehreren Schichten integrierten Aussparungen in diesem Bereich sozusagen ausgelöscht werden und nicht mehr erkennbar sind.Disadvantage of this security element is that the overprinting of a part of the optically variable layer with a color layer, the optionally in the optically variable layer structure in one or more layers integrated recesses in this area are extinguished so to speak and are no longer recognizable.
Außerdem ist die Farbanpassung einer Druckschicht an den metallisch glänzenden Farbeindruck der optisch variablen Schicht äußerst problematisch, sodass hier nur unbefriedigende Ergebnisse erreicht werden.In addition, the color matching of a printing layer to the shiny metallic color impression of the optically variable layer is extremely problematic, so that only unsatisfactory results are achieved here.
Aufgabe der vorliegenden Erfindung war es daher, ein entsprechendes Sicherheitselement mit hoher Fälschungssicherheit bereitzustellen, das die Nachteile des Standes der Technik vermeidet.Object of the present invention was therefore to provide a corresponding security element with high security against counterfeiting, which avoids the disadvantages of the prior art.
Gegenstand der Erfindung ist daher ein Sicherheitselement mit einer optisch variablen Schicht, die unter unterschiedlichen Betrachtungswinkeln unterschiedliche Farbeindrücke aufweist, dadurch gekennzeichnet, dass in einem definierten Bereich über oder neben der optisch variablen Schicht eine farbige metallische Schicht angeordnet ist, wobei der Farbeindruck dieser Schicht an den Farbeindruck der optisch variablen Schicht unter einem definierten Betrachtungswinkel angepasst ist.The invention therefore provides a security element with an optically variable layer which has different color impressions at different viewing angles, characterized in that a colored metallic layer is arranged in a defined area above or next to the optically variable layer, the color impression of this layer being applied to the Color impression of the optically variable layer is adjusted under a defined viewing angle.
Die farbige metallische Schicht besteht zum einen aus einer Schicht aus einer Metallverbindung mit definierter Dicke und definierten optischen Eigenschaften (spektrale Absorption, Brechungsindex, Transparenz) und zum anderen aus einer zumindest teilweise reflektierenden metallischen Schicht.The colored metallic layer consists on the one hand of a layer of a metal compound with a defined thickness and defined optical properties (spectral absorption, refractive index, transparency) and on the other hand of an at least partially reflective metallic layer.
Als Metallverbindung kommen transparente oder teiltransparente Materialien in Frage, die eine definierte bzw. selektive spektrale Absorption und im Idealfall einen Brechungsindex > 1,6 aufweisen, insbesondere können dies Oxide, Sulfate oder Fluoride von Metallen oder Halbleitern sein. Beispiele sind Oxide von Ti, Zn, Cu, Zr, Al, Cr, Mg, Hf, Si, Y oder Ta, komplexe Oxide wie Indium-Zinn-Oxid (ITO), Antimon-Zinn-Oxid (ATO), Fluor-Zinn-Oxid (FTO) oder Zn-Chromat, sowie ZnS, BaF2, MgF2, CaF2.Suitable metal compounds are transparent or partially transparent materials which have a defined or selective spectral absorption and, ideally, a refractive index> 1.6, in particular, these may be oxides, sulfates or fluorides of metals or semiconductors. Examples are oxides of Ti, Zn, Cu, Zr, Al, Cr, Mg, Hf, Si, Y or Ta, complex oxides such as indium tin oxide (ITO), antimony tin oxide (ATO), fluorine tin Oxide (FTO) or Zn-chromate, as well as ZnS, BaF 2 , MgF 2 , CaF 2 .
Als zumindest teilweise reflektierende metallische Schicht werden in erster Linie Metalle verwendet, wie z.B. Al, Sn, Cu, Zn, Pt, Au, Ag, Cr, Ti, Mo, Fe oder deren Legierungen, wie z.B. Cu-Al, Cu-Sn, Cu-Zn, Eisenlegierungen, Stahl, Edelstahl oder dergleichen.As at least partially reflective metallic layer, metals such as e.g. Al, Sn, Cu, Zn, Pt, Au, Ag, Cr, Ti, Mo, Fe or their alloys, e.g. Cu-Al, Cu-Sn, Cu-Zn, iron alloys, steel, stainless steel or the like.
Die Schichten werden bevorzugt mittels eines PVD- oder CVD-Verfahrens auf ein Trägersubstrat oder ein bereits mit anderen Schichten beschichtetes Trägersubstrat aufgebracht.The layers are preferably applied to a carrier substrate or a carrier substrate already coated with other layers by means of a PVD or CVD method.
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.In a PVD process, the coating is applied under vacuum (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, deposited by thermal evaporation, arc or electron beam evaporation.
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.Another possibility is the application of the coating by AC or DC sputtering, wherein the appropriate method is selected depending on the thickness of the layer to be applied and the material used.
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.In a CVD process, the substances to be applied in the form of gaseous (eg organometallic) precursor compounds (so-called precursors) by means of an inert carrier gas (eg N 2 , argon) introduced into a vacuum coating system, broken up by the entry of energy and reacted. Part of the reaction products condenses on the substrate where it forms the desired layer, the remaining reaction products are removed via a vacuum system. Gaseous precursors can be, for example, CO, CO 2 , oxygen, silanes, methane, ammonia, ferrocene, trimethylaluminum, or the like.
Die Einbringung der Energie kann z.B. mittels eines lonen- oder Elektronenstrahls, eines Plasmas oder über erhöhte Temperatur erfolgen.The introduction of the energy can e.g. by means of an ion or electron beam, a plasma or elevated temperature.
Betrachtet man eine solche Schichtfolge von der Seite der Metallverbindung, so passiert das Licht zunächst die Schicht aus einer Metallverbindung, wird von der zumindest teilweise reflektierenden metallischen Schicht reflektiert und passiert ein zweites Mal die Schicht aus einer Metallverbindung. Der Farbeindruck entsteht nun durch eine definierte spektrale Absorption und Interferenz in der Schicht aus einer Metallverbindung in Verbindung mit dem spektralen Reflexionsverhalten der darunter liegenden zumindest teilweise reflektierenden metallischen Schicht.Looking at such a layer sequence from the metal compound side, the light first passes through the metal compound layer, is reflected by the at least partially reflecting metallic layer, and passes through the metal compound layer a second time. The color impression is now produced by a defined spectral absorption and interference in the layer of a metal compound in conjunction with the spectral reflection behavior of the underlying at least partially reflective metallic layer.
Der Farbeindruck wird somit durch folgende Parameter bestimmt:
- Optische Eigenschaften der Schicht aus einer Metallverbindung
- Dicke der Schicht aus einer Metallverbindung
- Spektrales Reflexionsverhalten der zumindest teilweise reflektierenden metallischen Schicht
- Optical properties of the layer of a metal compound
- Thickness of the layer of a metal compound
- Spectral reflection behavior of the at least partially reflective metallic layer
Die optischen Eigenschaften der Schicht aus einer Metallverbindung sind abhängig vom gewählten Material, das zunächst den Brechungsindex der Schicht bestimmt. So weist z.B. eine TiOx-Schicht etwa einen Brechungsindex von 2,2, eine CuOx-Schicht einen Brechungsindex von etwa 2,0 und MgF2 einen Brechungsindex von 1,38 auf. Auch die Absorption ist eine intrinsische Eigenschaft des Materials und ist in der Regel spektral charakteristisch, d.h. das Material absorbiert in bestimmten Wellenlängenbereichen mehr als in anderen Bereichen. Dies ist z.B. der Fall, wenn eine Absorptionskante im sichtbaren Bereich auftritt, oder wenn der Absorptionskoeffizient mit zunehmender Wellenlänge gleichmäßig ansteigt. Der Absorptionskoeffizient kann auch durch die Stöchiometrie der Verbindung beeinflusst werden, die bei Oxiden beispielsweise über den Sauerstoffpartialdruck beim Aufdampfprozess gesteuert wird. Wird Ti im Vakuum ohne Zugabe von Sauerstoff aufgedampft, so entsteht bei Dicken von 30-50 nm eine weitgehend opake Schicht, bei Zugabe von Sauerstoff während des Bedampfungsvorganges steigt die Transparenz jedoch stetig an, bis eine stöchiometrische Oxidverbindung (Ti02) auf dem Trägersubstrat vorliegt, die bei der gleichen Schichtdicke nur mehr eine geringe Restabsorption aufweist.The optical properties of the layer of a metal compound are dependent on the selected material, which initially determines the refractive index of the layer. For example, a TiO x layer has about a refractive index of 2.2, a CuO x layer has a refractive index of about 2.0, and MgF 2 has a refractive index of 1.38. The absorption is also an intrinsic property of the material and is usually spectrally characteristic, ie the material absorbs more in certain wavelength ranges than in other areas. This is the case, for example, when an absorption edge occurs in the visible range, or when the absorption coefficient increases uniformly with increasing wavelength. The absorption coefficient can also be influenced by the stoichiometry of the compound, which in the case of oxides is controlled, for example, by the oxygen partial pressure in the vapor deposition process. If Ti is evaporated in vacuo without the addition of oxygen, a largely opaque layer is formed at thicknesses of 30-50 nm, but upon addition of oxygen during the sputtering process, the transparency steadily increases until a stoichiometric oxide compound (TiO 2 ) is present on the carrier substrate , which has only a small residual absorption at the same layer thickness.
In einer teiltransparenten Schicht, deren optische Dicke, also das Produkt aus Brechungsindex (n) und der geometrischen Schichtdicke (d) n·d, im Bereich der Wellenlänge des einfallenden Lichts liegt (etwa im Bereich von 50-2000 nm), kommt es zu Interferenzeffekten aufgrund der teilweisen Reflexion des Lichts an der oberen und unteren Grenzfläche der Schicht. Es kommt dadurch zu einer wellenlängenselektiven Verstärkung oder Abschwächung des einfallenden Lichts und somit zu einem Farbeffekt, der sich mit der Dicke der Schicht ändert. Wird ein bestimmtes Material, also z.B. TiOx oder CuOx mit konstanter Stöchiometrie und optischen Eigenschaften verwendet, kann alleine über die Schichtdicke die Farbe eingestellt werden. So dämpft beispielsweise eine 80 nm dicke CuOx-Schicht selektiv die grünen und blauen Anteile und verstärkt die gelben Anteile des Spektrums, während eine 160 nm dicke CuOx-Schicht gleicher Zusammensetzung die roten und blauen Anteile dämpft und die grünen Anteile verstärkt.In a partially transparent layer, the optical thickness, ie the product of refractive index (n) and the geometric layer thickness (d) n · d, in the range of the wavelength of the incident light is (about in the range of 50-2000 nm), it comes to Interference effects due to the partial reflection of the light at the upper and lower boundary of the layer. This results in a wavelength-selective amplification or attenuation of the incident light and thus a color effect that changes with the thickness of the layer. If a specific material, eg TiO x or CuO x with constant stoichiometry and optical properties is used, the color alone can be adjusted via the layer thickness. For example, an 80 stops steaming nm thick CuO x layer selectively the green and blue portions and amplifies the yellow portions of the spectrum, while a 160 nm thick CuO x layer of the same composition attenuates the red and blue components and enhances the green components.
Die Dicke der Schicht aus Metallverbindungen beträgt 10 - 700 nm, bevorzugt 20 - 200 nm.The thickness of the layer of metal compounds is 10 - 700 nm, preferably 20 - 200 nm.
Durch die entsprechende Auswahl des Materials, aus dem die zumindest teilweise reflektierende metallische Schicht besteht, kann der Farbeindruck des Gesamtsystems ebenfalls beeinflusst werden. So weist beispielsweise Aluminium im gesamten sichtbaren Bereich eine gleichmäßig hohe Reflexion und somit ein neutrales Reflexionsverhalten auf. Kupfer dagegen erscheint rötlich, d.h. die Rotanteile des Lichts werden stärker reflektiert als die Blauanteile. Gold erscheint gelblich, d.h. die Gelbanteile werden stärker reflektiert als andere Wellenlängen. Eine 80 nm dicke CuOx-Schicht (siehe oben) wirkt bei Verwendung eines 35 nm dicken Aluminiumspiegels gelb-rötlich, bei Verwendung eines 35 nm dicken Goldspiegels kräftig gelb und bei Verwendung eines 70 nm dicken Cu-Spiegels orange-rot. Eine 35 nm dicke TiOx-Schicht in Verbindung mit einem 200 nm dicken Cu-Spiegel erscheint kräftig rot.By appropriate selection of the material of which the at least partially reflective metallic layer is made, the color impression of the overall system can also be influenced. For example, aluminum has a uniformly high reflection and thus a neutral reflection behavior in the entire visible range. Copper on the other hand appears reddish, ie the red parts of the light are reflected more strongly than the blue parts. Gold appears yellowish, ie the yellows are reflected more strongly than other wavelengths. A 80 nm thick CuO x layer (see above) acts when using a 35 nm thick aluminum mirror yellow-reddish, when using a 35 nm thick gold mirror thick bright yellow, and when using a 70 nm Cu-mirror orange-red. A 35 nm thick TiOx layer in conjunction with a 200 nm thick Cu mirror appears bright red.
Die Dicke der zumindest teilweise reflektierenden metallischen Schicht liegt zwischen 5 und 500 nm, bevorzugt zwischen 10 und 100 nm.The thickness of the at least partially reflective metallic layer is between 5 and 500 nm, preferably between 10 and 100 nm.
Charakteristisch für eine solche farbige metallische Schicht ist dabei der metallische Glanz, der aufgrund der zumindest teilweise reflektierenden metallischen Schicht entsteht. Dieser Farbeindruck unterscheidet sich deutlich von anders hergestellten Farbeffekten, z.B. durch Überdrucken und kommt dem Farbeindruck einer optisch variablen Schicht, die ebenfalls einen Metallspiegel verwendet, sehr nahe.Characteristic of such a colored metallic layer is the metallic luster, which arises due to the at least partially reflective metallic layer. This color impression differs significantly from other color effects produced, for example by overprinting and the color impression of an optically variable layer, which also uses a metal mirror, very close.
Weiters ist die Herstellung von partiell aufgebrachten Schichten möglich, die dadurch gekennzeichnet sind, dass die Farbschicht, also die Schicht aus einer Metallverbindung, und die Spiegelschicht, also die zumindest teilweise reflektierende metallische Schicht, ohne Toleranz zueinander aufgebracht sind und in den nicht beschichteten Bereichen keine Schicht vorhanden ist. Versucht ein Fälscher, diesen Effekt durch Überdrucken einer metallisch glänzenden Schicht mit einer lasierenden Farbe zu erzeugen, ist aufgrund der Fertigungstoleranzen eine Aufbringung nur so genau möglich, dass dennoch immer ein Farb- oder Metallsaum erkennbar ist. Die Fälschungssicherheit des erfindungsgemäßen Sicherheitsmerkmals ist dabei deutlich erhöht.Furthermore, the production of partially applied layers is possible, which are characterized in that the color layer, ie the layer of a metal compound, and the mirror layer, ie the at least partially reflective metallic layer, are applied without tolerance to each other and none in the uncoated areas Layer is present. If a counterfeiter attempts to produce this effect by overprinting a metallically lustrous layer with a translucent color, it is only possible to apply the ink as precisely as possible because of the manufacturing tolerances, but nevertheless a color or metal space is always recognizable. The security against forgery of the security feature according to the invention is significantly increased.
Die Herstellung erfolgt bevorzugt mittels eines Verfahrens, bei dem zunächst eine lösliche, ggf. pigmentierte Druckfarbe aufgebracht wird, danach die Schicht aus einer Metallverbindung und die zumindest teilweise reflektierende metallische Schicht aufgedampft wird und anschließend die Druckfarbe mit der darüberliegenden Schichtfolge unter Einwirkung eines Lösemittels und ggf. mit mechanischer Unterstützung wieder entfernt wird. Dieses Verfahren ist beispielsweise in der
Durch die Anpassung des Farbeindrucks der farbigen metallischen Schicht an die Farbe der optisch variablen Schicht unter einem definierten Betrachtungswinkel ergibt sich unter diesem Betrachtungswinkel ein einheitlicher Farbeindruck.
Bei Betrachtung unter einem veränderten Betrachtungswinkel ändert sich der Farbeindruck in jenen Bereichen, in denen die farbige metallische Schicht aufgebracht und sichtbar ist, nicht, wogegen in den Bereichen, in denen die optisch variable Schicht sichtbar ist, eine deutliche Farbänderung (Farbkippeffekt) erkennbar ist.
Bei geeignetem Design des Sicherheitselements können so vielfältige und verblüffende optische Effekte erzielt werden, die auch für einen Laien rasch und einfach verifiziert werden können.By adapting the color impression of the colored metallic layer to the color of the optically variable layer at a defined viewing angle, a uniform color impression results under this viewing angle.
When viewed under a different viewing angle, the color impression does not change in those areas in which the colored metallic layer is applied and visible, whereas in the areas in which the optically variable layer is visible, a distinct color change (color shift effect) can be recognized.
With a suitable design of the security element, it is possible to achieve such diverse and astounding visual effects that can also be quickly and easily verified by a layman.
Dadurch wird gegenüber einem Sicherheitselement mit lediglich einer Schicht, also entweder einer farbigen oder einer farbkippenden Schicht, ein deutlich erhöhter Fälschungsschutz erreicht.As a result, compared to a security element with only one layer, ie either a colored or a color-shifting layer, a significantly increased protection against counterfeiting is achieved.
Weist die farbige metallische oder die optisch variable Schicht Aussparungen, beispielsweise in Form von Zeichen, Symbolen, Linien, Mustern oder dergleichen auf, sind zusätzliche, in Durch- oder Auflicht erkennbare Sicherheitseffekte erzielbar.If the colored metallic or the optically variable layer has recesses, for example in the form of characters, symbols, lines, patterns or the like, additional security effects which can be recognized by transmitted or incident light can be achieved.
Weist das Sicherheitselement eine Beugungsstruktur auf oder ist im Aufbau eine weitere Schicht, die eine Beugungsstruktur aufweist, vorgesehen, kann die Sicherheit weiter gesteigert werden.If the security element has a diffraction structure or if a further layer which has a diffraction structure is provided in the structure, the security can be further increased.
Die optisch variable Schicht kann durch einen Dünnschichtaufbau gebildet sein, der eine Reflexionsschicht, eine dielektrische Abstandsschicht und eine Absorberschicht umfasst.The optically variable layer may be formed by a thin film structure comprising a reflective layer, a dielectric spacer layer and an absorber layer.
In einer bevorzugten Ausführungsform kann die optisch variable Schicht aus einer elektromagnetische Wellen reflektierenden Schicht oder einer Schicht mit hohem Brechungsindex (HRI-Schicht), und einer darauf situierten polymeren Abstandsschicht und einer Schicht gebildet aus metallischen Clustern aufgebaut sein. Derartige Schichtsysteme und Verfahren zu deren Herstellung sind beispielsweise aus
Jede der Schichten dieses Schichtaufbaus kann zusätzliche Eigenschaften aufweisen. Geeignete Maßnahmen zur Integration von zusätzlichen Eigenschaften sind in
In weiteren Ausführungsformen kann die optisch variable Schicht durch eine gedruckte Farbschicht mit Farbkipppigmenten, wie z.B. aus der
Der Schichtaufbau erfolgt auf einem Trägersubstrat.The layer structure takes place on a carrier substrate.
Als Trägersubstrate kommen beispielsweise Trägerfolien vorzugsweise flexible Kunststofffolien, beispielsweise aus Pl, PP, MOPP, PE, PPS, PEEK, PEK, PEI, PSU, PAEK, LCP, PEN, PBT, PET, PA, PC, COC, POM, ABS, PVC, PTFE, ETFE (Ethylentetrafluorethylen), PFA (Tetrafluorethylen-Perfluorpropylvinylether-Fluorcopolymer), MFA (Tetrafluor-methylen-Perfluorpropylvinylether-Fluorcopolymer), PTFE (Polytetra-fluorethylen), PVF (Polyvinylfluorid), PVDF (Polyvinylidenfluorid), und EFEP (EthylenTetrafluorethylen-Hexafluorpropylen-Fluorterpolymer) in Frage.
Die Trägerfolien weisen vorzugsweise eine Dicke von 5 - 700 µm, bevorzugt 5 - 200 µm, besonders bevorzugt 5 - 50 µm auf.As carrier substrates, for example, carrier films are preferably 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 fluorocopolymer), PTFE (polytetrafluoroethylene), PVF (polyvinyl fluoride), PVDF (polyvinylidene fluoride), and EFEP (ethylene tetrafluoroethylene). Hexafluoropropylene fluoropolymer).
The carrier films preferably have a thickness of 5 to 700 .mu.m, preferably 5 to 200 .mu.m, particularly preferably 5 to 50 .mu.m.
Ferner können als Trägersubstrat auch Metallfolien, beispielsweise Al-, Cu-, Sn-, Ni-, Fe- oder Edelstahlfolien mit einer Dicke von 5 - 200 µm, vorzugsweise 10 bis 80 µm, besonders bevorzugt 20 - 50 µm dienen. Die Folien können auch oberflächenbehandelt, beschichtet oder kaschiert, beispielsweise mit Kunststoffen, oder lackiert sein.Furthermore, metal foils, for example Al, Cu, Sn, Ni, Fe or stainless steel foils having a thickness of 5-200 μm, preferably 10 to 80 μm, particularly preferably 20-50 μm, may also serve as the carrier substrate. The films can also be surface-treated, coated or laminated, for example with plastics, or painted.
Ferner können als Trägersubstrate auch zellstofffreies oder zellstoffhaltiges Papier, thermoaktivierbares Papier oder Verbunde mit Papier, beispielsweise Verbunde mit Kunststoffen mit einem Flächengewicht von 20 - 500 g/m2, vorzugsweise 40 - 200 g/m2. verwendet werden.Further, as carrier substrates and pulp-free or cellulose-containing paper, thermally activated paper or composites with paper, such as composites with plastics having a basis weight of 20 - 500 g / m 2 , preferably 40 - 200 g / m 2 . be used.
Wird die optisch variable Schicht durch ein Dünnschichtelement gebildet, wird die Reflexionsschicht vorzugsweise durch eine opake oder durch eine semitransparente Metallschicht gebildet.If the optically variable layer is formed by a thin-film element, the reflection layer is preferably formed by an opaque or by a semitransparent metal layer.
Die Reflexionsschicht kann auch Aussparungen in Form von Mustern, Zeichen oder Codierungen aufweisen, die transparente oder semitransparente Bereiche in dem Dünnschichtelement bilden.The reflective layer may also have recesses in the form of patterns, characters or codes that form transparent or semi-transparent regions in the thin-film element.
Die dielektrische Abstandsschicht ist vorzugsweise durch eine Druckschicht oder durch eine ultradünne Folie, insbesondere eine gereckte Polyesterfolie, gebildet.The dielectric spacer layer is preferably formed by a print layer or by an ultrathin film, in particular a stretched polyester film.
Alternativ oder zusätzlich zu Aussparungen in der Reflexionsschicht können auch die Absorberschicht und/ oder die Abstandsschicht Aussparungen in Form von Mustern, Zeichen, Symbolen, Linien oder Codierungen aufweisen. In den ausgesparten Bereichen der Absorberschicht oder der Abstandsschicht tritt kein Farbkippeffekt auf.As an alternative or in addition to recesses in the reflection layer, the absorber layer and / or the spacer layer may also have recesses in the form of patterns, characters, symbols, lines or codes. There is no color shift effect in the recessed areas of the absorber layer or the spacer layer.
Gegebenfalls kann das erfindungsgemäße Sicherheitselement auch zusätzlich eine thermoplastische oder UV-härtbare Lackschicht umfassen, die Strukturen, wie beispielsweise Beugungsstrukturen, Beugungsgitter, Oberflächenreliefs, Hologramme, Kinegramme und dergleichen aufweist.Optionally, the security element of the invention may additionally comprise a thermoplastic or UV-curable lacquer layer having structures such as diffraction patterns, diffraction gratings, surface reliefs, holograms, kinegrams and the like.
Derartige Schichten mit Beugungsstrukturen und deren Herstellung sind beispielsweise aus
Das erfindungsgemäße Sicherheitselement kann darüber hinaus noch weitere, dem Fachmann bekannte Sicherheitsmerkmale enthalten. Beispiele sind fluoreszierende, phosphoreszierende, magnetische, elektrisch leitfähige, thermochrome, photochrome Merkmale oder weitere optische Sicherheitsmerkmale wie z.B. Mikrolinsensysteme.The security element according to the invention may additionally contain further security features known to the person skilled in the art. Examples are fluorescent, phosphorescent, magnetic, electrically conductive, thermochromic, photochromic features or other optical security features such as e.g. Microlens systems.
In den
In den Figuren bedeuten
- 1 eine Banknote
- 2 ein zumindest teilweise eingebettetes Sicherheitselement in Form eines Fadens oder Streifens gemäß vorliegender Erfindung
- 3 ein appliziertes Sicherheitselement
- 4 einen Fensterbereich, in
dem das Sicherheitselement 2 an der Oberfläche derBanknote 1 hervortritt - 5 den Bereich des Sicherheitsfadens, der einen blickwinkelabhängigen Farbkippeffekt zeigt
- 6 den Bereich des Sicherheitsfadens, der eine vom Betrachtungswinkel unabhängige Farbe zeigt
- 7 die optisch variable Schicht
- 8 die farbige metallische Schicht, bestehend aus einer Schicht aus Metallverbindungen 8a und einer zumindest teilweise reflektierenden metallischen Schicht 8b
- 9 Aussparungen in der reflektierenden Schicht der optisch variablen Schicht
- 9a Aussparungen in der farbigen metallischen Schicht
- 10 ein Trägersubstrat
- 11 eine elektromagnetische Wellen reflektierende Schicht
- 12 eine polymere Abstandsschicht
- 13 eine Schicht gebildet aus metallischen Clustern
- 14 eine Lackschicht
- 15 Prägungen an der Oberfläche der Lackschicht 14
- 1 a banknote
- 2 an at least partially embedded security element in the form of a thread or strip according to the present invention
- 3 an applied security element
- 4 shows a window area in which the
security element 2 emerges on the surface of thebanknote 1 - Figure 5 shows the area of the security thread showing a viewing-angle-dependent color-shift effect
- 6 shows the area of the security thread showing a color independent of the viewing angle
- 7 the optically variable layer
- 8 shows the colored metallic layer consisting of a layer of
metal compounds 8a and an at least partially reflectivemetallic layer 8b - 9 recesses in the reflective layer of the optically variable layer
- 9a recesses in the colored metallic layer
- 10 a carrier substrate
- 11, an electromagnetic wave reflecting layer
- 12 a polymeric spacer layer
- 13 a layer formed of metallic clusters
- 14 a paint layer
- 15 embossments on the surface of the
lacquer layer 14
Der Sicherheitsfaden 2 weist ein Trägersubstrat 10 auf, auf dem zunächst eine optisch variable Schicht 7 aufgebracht ist.The
Die optisch variable Schicht besteht in diesem Ausführungsbeispiel aus einer elektromagnetische Wellen reflektierenden Schicht 11 mit Aussparungen 9, einer polymeren Abstandsschicht 12 und einer Schicht gebildet aus metallischen Clustern 13. In definierten Bereichen 6 ist auf die optisch variable Schicht 7 eine Schicht aus Metallverbindungen 8 aufgebracht, die wiederum Aussparungen 9a aufweist. Die farbige metallische Schicht 8 besteht wiederum aus der Schicht aus einer Metallverbindung 8a und einer zumindest teilweise reflektierenden metallischen Schicht 8b. Durch die Aussparungen 9a sieht nun der Betrachter (symbolisiert durch das Auge) die optisch variable Schicht 7. Bei Verwendung eines transparenten Substrats 10 erscheint das Sicherheitselement in den Bereichen 9 zumindest teiltransparent, nur eine schwache Absorption durch die Schicht gebildet aus metallischen Clustern 13 ist erkennbar.The optically variable layer in this embodiment consists of an electromagnetic
Gegebenenfalls kann auf der zweiten Oberfläche des Trägersubstrats nochmals eine optisch variable, eine farbige metallische oder eine Kombination dieser beiden Schichten aufgebracht sein. Damit kann z.B. in einem Wertdokument mit Fenster auf der Vorder- und Rückseite des Wertdokuments der selbe oder ein unterschiedlicher Effekt erzielt werden.Optionally, an optically variable, a colored metallic or a combination of these two layers can be applied to the second surface of the carrier substrate again. Thus, e.g. in a value document with window on the front and back of the value document the same or a different effect can be achieved.
Gegebenenfalls kann das Sicherheitselement auch noch durch eine Schutzlackschicht geschützt werden oder beispielsweise durch Kaschieren oder dergleichen weiterveredelt werden.Optionally, the security element can also be protected by a protective lacquer layer or further refined, for example, by laminating or the like.
Gegebenenfalls kann das Sicherheitselement mit einem siegelfähigen Kleber, beispielsweise einem Heiß- oder Kaltsiegelkleber, oder einer Selbstklebebeschichtung auf das entsprechende Trägermaterial appliziert werden, oder beispielsweise bei der Papierherstellung für Sicherheitspapiere durch übliche Verfahren zumindest teilweise in das Papier eingebettet werden.Optionally, the security element with a sealable adhesive, such as a hot or cold seal adhesive, or a self-adhesive coating can be applied to the corresponding substrate, or at least partially embedded in paper for security papers by conventional methods, for example, in the paper.
Die erfindungsgemäßen Sicherheitselemente können ggf. nach Konfektionierung als Sicherheitsmerkmale in Datenträgern, insbesondere Wertdokumenten wie Ausweisen, Karten, Banknoten oder Etiketten, Siegeln auf oder als Verpackungsmaterial beispielsweise in der pharmazeutischen, Elektronik- und/oder Lebensmittelindustrie, beispielsweise in Form von Blisterfolien, Faltschachteln, Abdeckungen, Folienverpackungen verwendet werden.If necessary, the security elements according to the invention can, after packaging, be used as security features in data carriers, in particular value documents such as identification cards, banknotes or labels, seals on or as packaging material, for example in the pharmaceutical, electronics and / or food industry, for example in the form of blister foils, folding boxes, covers , Foil wrappers are used.
Claims (17)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA1214/2010A AT510220B1 (en) | 2010-07-19 | 2010-07-19 | SECURITY ELEMENT WITH AN OPTICAL VARIABLE LAYER |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2420391A2 true EP2420391A2 (en) | 2012-02-22 |
EP2420391A3 EP2420391A3 (en) | 2015-09-02 |
Family
ID=45420529
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11005638.9A Withdrawn EP2420391A3 (en) | 2010-07-19 | 2011-07-09 | Security element with an optically variable layer |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2420391A3 (en) |
AT (1) | AT510220B1 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2960068A1 (en) | 2014-06-23 | 2015-12-30 | Hueck Folien Ges.m.b.H | Security element with modified colour shift effect |
WO2016192828A1 (en) | 2015-05-29 | 2016-12-08 | Hueck Folien Ges.M.B.H. | Security element having a color-shifting effect |
WO2017194189A1 (en) * | 2016-05-12 | 2017-11-16 | Giesecke+Devrient Currency Technology Gmbh | Security element and data carrier |
CN110978577A (en) * | 2019-12-27 | 2020-04-10 | 上海伪静防伪科技有限公司 | Production method and production equipment of anti-counterfeiting fiber |
EP3777605A4 (en) * | 2018-04-10 | 2021-05-19 | Lg Chem, Ltd. | Decorative member |
EP3808209A4 (en) * | 2018-06-15 | 2021-07-28 | Lg Chem, Ltd. | Decoration member |
EP3954544A1 (en) * | 2020-08-14 | 2022-02-16 | Hueck Folien Gesellschaft m.b.H. | Flat security element with optical security features |
US11932001B2 (en) | 2018-06-15 | 2024-03-19 | Lg Chem, Ltd. | Decoration member |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5171363A (en) | 1979-12-28 | 1992-12-15 | Flex Products, Inc. | Optically variable printing ink |
EP1291463A1 (en) | 2001-09-05 | 2003-03-12 | Hueck Folien Gesellschaft m.b.H. | Process for producing a selectively metallized foil, and their products |
EP1310381A2 (en) | 2001-11-09 | 2003-05-14 | Hueck Folien GmbH | Weblike materials with surface structure, method of manufacture and use thereof |
EP1352732A2 (en) | 2002-04-11 | 2003-10-15 | Hueck Folien Gesellschaft m.b.H. | Substrate with preferably transferable layers and/or surface structures, process for its preparation and the use thereof |
EP1558449A1 (en) | 2002-08-06 | 2005-08-03 | Hueck Folien Ges.m.b.H | Method for producing tamper-proof identification elements |
WO2006040069A1 (en) | 2004-10-07 | 2006-04-20 | Giesecke & Devrient Gmbh | Safety element provided with an optically-variable layer and method for the production thereof |
EP1716007B1 (en) | 2004-02-16 | 2008-07-09 | Hueck Folien Ges.m.b.H | Tamper-proof, color-shift security feature |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007061828A1 (en) * | 2007-12-20 | 2009-06-25 | Giesecke & Devrient Gmbh | Security element and method for its production |
DE102008031325A1 (en) * | 2008-07-02 | 2010-01-07 | Giesecke & Devrient Gmbh | Security element and method for its production |
-
2010
- 2010-07-19 AT ATA1214/2010A patent/AT510220B1/en not_active IP Right Cessation
-
2011
- 2011-07-09 EP EP11005638.9A patent/EP2420391A3/en not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5171363A (en) | 1979-12-28 | 1992-12-15 | Flex Products, Inc. | Optically variable printing ink |
EP1291463A1 (en) | 2001-09-05 | 2003-03-12 | Hueck Folien Gesellschaft m.b.H. | Process for producing a selectively metallized foil, and their products |
EP1310381A2 (en) | 2001-11-09 | 2003-05-14 | Hueck Folien GmbH | Weblike materials with surface structure, method of manufacture and use thereof |
EP1352732A2 (en) | 2002-04-11 | 2003-10-15 | Hueck Folien Gesellschaft m.b.H. | Substrate with preferably transferable layers and/or surface structures, process for its preparation and the use thereof |
EP1558449A1 (en) | 2002-08-06 | 2005-08-03 | Hueck Folien Ges.m.b.H | Method for producing tamper-proof identification elements |
EP1716007B1 (en) | 2004-02-16 | 2008-07-09 | Hueck Folien Ges.m.b.H | Tamper-proof, color-shift security feature |
WO2006040069A1 (en) | 2004-10-07 | 2006-04-20 | Giesecke & Devrient Gmbh | Safety element provided with an optically-variable layer and method for the production thereof |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2960068A1 (en) | 2014-06-23 | 2015-12-30 | Hueck Folien Ges.m.b.H | Security element with modified colour shift effect |
WO2016192828A1 (en) | 2015-05-29 | 2016-12-08 | Hueck Folien Ges.M.B.H. | Security element having a color-shifting effect |
WO2017194189A1 (en) * | 2016-05-12 | 2017-11-16 | Giesecke+Devrient Currency Technology Gmbh | Security element and data carrier |
US11812837B2 (en) | 2018-04-10 | 2023-11-14 | Lg Chem, Ltd. | Decorative member for cosmetics container, and method for producing same |
EP3777605A4 (en) * | 2018-04-10 | 2021-05-19 | Lg Chem, Ltd. | Decorative member |
EP3777604A4 (en) * | 2018-04-10 | 2021-05-26 | Lg Chem, Ltd. | Decorative member |
EP3808206A4 (en) * | 2018-06-15 | 2021-07-28 | Lg Chem, Ltd. | Decoration member |
EP3808208A4 (en) * | 2018-06-15 | 2021-07-28 | Lg Chem, Ltd. | Decoration member |
EP3808209A4 (en) * | 2018-06-15 | 2021-07-28 | Lg Chem, Ltd. | Decoration member |
EP3808210A4 (en) * | 2018-06-15 | 2021-07-28 | Lg Chem, Ltd. | Decoration member |
US11589663B2 (en) | 2018-06-15 | 2023-02-28 | Lg Chem, Ltd. | Decoration member |
US11889910B2 (en) | 2018-06-15 | 2024-02-06 | Lg Chem, Ltd. | Decoration member |
US11906760B2 (en) | 2018-06-15 | 2024-02-20 | Lg Chem, Ltd. | Decoration member |
US11932001B2 (en) | 2018-06-15 | 2024-03-19 | Lg Chem, Ltd. | Decoration member |
US11940636B2 (en) | 2018-06-15 | 2024-03-26 | Lg Chem, Ltd. | Decoration member |
CN110978577B (en) * | 2019-12-27 | 2023-06-30 | 上海伪静防伪科技有限公司 | Production method and production equipment of anti-counterfeiting fiber |
CN110978577A (en) * | 2019-12-27 | 2020-04-10 | 上海伪静防伪科技有限公司 | Production method and production equipment of anti-counterfeiting fiber |
EP3954544A1 (en) * | 2020-08-14 | 2022-02-16 | Hueck Folien Gesellschaft m.b.H. | Flat security element with optical security features |
WO2022034193A1 (en) | 2020-08-14 | 2022-02-17 | Hueck Folien Gesellschaft M.B.H. | Flat security element with optical security features |
Also Published As
Publication number | Publication date |
---|---|
AT510220A1 (en) | 2012-02-15 |
AT510220B1 (en) | 2013-07-15 |
EP2420391A3 (en) | 2015-09-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AT510220B1 (en) | SECURITY ELEMENT WITH AN OPTICAL VARIABLE LAYER | |
EP1478520B1 (en) | Security document and security element for a security document | |
EP1476315B1 (en) | Security element and security document with one such security element | |
EP2578414B1 (en) | Security element with colour-switching effect, use of same and method for producing same | |
EP3374197B1 (en) | Security element, method for producing same, and data carrier equipped with the security element | |
EP2219168B1 (en) | Transmission security element | |
EP3233516B1 (en) | Security element with colour shift effect and fluorescent features | |
WO2006002756A2 (en) | Security element with a color shift tilt effect | |
EP1217091B1 (en) | Packages and packaging aids | |
EP3643511B1 (en) | Security element and data carrier provided with the security element | |
DE19744953A1 (en) | Security element with an auxiliary inorganic layer | |
DE102012020550A1 (en) | Optically variable surface pattern | |
EP2501553A1 (en) | Security element having a microstructure | |
EP2851194B1 (en) | Safety element, in particular safety label | |
EP3230081A1 (en) | Security element, method for producing the same and data carrier provided with the security element | |
EP1620602A1 (en) | Planar security element and method for the production thereof | |
EP3774375B1 (en) | Security element, method for producing same, and data carrier equipped with the security element | |
EP3873749A1 (en) | Security element and data carrier provided with the security element | |
EP3302996B1 (en) | Security element having a color-shifting effect | |
EP2251207B1 (en) | Method for the manufacture of a safety marker | |
EP3219508B1 (en) | Security element and data carrier | |
WO2022128152A1 (en) | Data carrier having a composite substrate having a security element arranged in a see-through region | |
EP2311646B1 (en) | Security document | |
WO2021063702A1 (en) | Security element with an optical effect layer formed as a thin layer |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20120817 |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: B42D 15/00 20060101ALN20150730BHEP Ipc: B44F 1/12 00000000AFI20150730BHEP |
|
17Q | First examination report despatched |
Effective date: 20160518 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: B42D 25/29 20140101AFI20161220BHEP Ipc: B42D 15/00 20060101ALN20161220BHEP |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
INTG | Intention to grant announced |
Effective date: 20170306 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20170718 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: B42D 25/29 20140101AFI20161220BHEP Ipc: B42D 15/00 20060101ALN20161220BHEP |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: B42D 15/00 20060101ALN20161220BHEP Ipc: B42D 25/29 20140101AFI20161220BHEP |