EP3288772B1 - Security element having two security features that adjoin each other - Google Patents

Security element having two security features that adjoin each other Download PDF

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Publication number
EP3288772B1
EP3288772B1 EP16715460.8A EP16715460A EP3288772B1 EP 3288772 B1 EP3288772 B1 EP 3288772B1 EP 16715460 A EP16715460 A EP 16715460A EP 3288772 B1 EP3288772 B1 EP 3288772B1
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EP
European Patent Office
Prior art keywords
coating
layer
optically variable
security element
multilayer system
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EP16715460.8A
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German (de)
French (fr)
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EP3288772A1 (en
Inventor
Giselher Dorff
Björn Teufel
Anja PFAFF
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Giesecke and Devrient Currency Technology GmbH
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Giesecke and Devrient Currency Technology GmbH
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Publication of EP3288772A1 publication Critical patent/EP3288772A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/351—Translucent or partly translucent parts, e.g. windows

Definitions

  • the invention relates to a security element for security papers, documents of value or the like, which has a transparent or translucent substrate made of a plastic film, an optically variable coating being applied to the substrate.
  • a security element with a substrate to which an optically variable coating in the form of a multilayer structure capable of interference is applied is, for example, from FIG WO 2005/108110 A1 or the WO 2005/038136 A1 known.
  • the multilayer structure capable of interference here consists of a reflective layer, a dielectric layer, and a partially transparent layer, the dielectric layer being arranged between the reflective layer and the partially transparent layer.
  • Such a security element is also referred to as a thin-film layer interference layer structure or as a color shift element due to its mode of operation.
  • an optically variable coating in the context of this invention is a coating whose visual appearance changes when the element is tilted. For example, when the optically variable coating is tilted, its color changes from purple to green, a bar appears to move from one side of the element to another, if different characters are displayed when tilted, or a so-called pumping effect results in the form of an enlarging or decreasing effect Outline of an image motif.
  • a metallic coating in the context of this invention consists of a metal or a material which has a reflective and metallic glossy surface, for example a lacquer layer in which metallic pigments are embedded.
  • the invention is based on the object of developing a generic security element in such a way that protection against counterfeiting is further increased.
  • a further coating is applied to the substrate, the optically variable coating and the further coating being arranged in such a way that they adjoin one another or at least partially overlap.
  • the further coating here has a colored layer or a multilayer structure, the colored layer and the multilayer structure being designed in such a way that they show a metallic, preferably golden or bronze-colored hue in incident light and a colored, preferably blue or green hue in transmitted light. There is transmitted light when an object is illuminated from one side and viewed from the other side. Incident light occurs when the lighting and viewing take place from the same side of an object.
  • a color layer with a metallic hue is a color layer which has a metallic reflective surface with a metal-colored shade which is preferably golden or gold-colored, silver or silver-colored or bronze-colored.
  • a colored layer with a colored hue is a colored layer which has a monochrome or multicolored surface, preferably a monochrome blue, a monochrome green or a monochrome red.
  • the further coating is formed by a further multilayer structure, which has at least two semitransparent mirror layers and at least one dielectric layer arranged between the at least two mirror layers, as it is, for example, from FIG DE 10 2009 058 243 A1 , which discloses a security element according to the preamble of claim 1, is known.
  • the further coating shows a resonance with a half width of 70 nm to 150 nm.
  • the resonance of the further coating is preferably the only resonance in the visible range.
  • the at least two semitransparent mirror layers of the reflective layer are formed from aluminum or an aluminum alloy, the dielectric spacer layer having a thickness h and a refractive index v fulfilling the relation 120 nm ⁇ h ⁇ v ⁇ 190 nm.
  • the further coating is applied to the optically variable coating.
  • the optically variable coating is first applied to the substrate and then subsequently the further coating is applied, the optically variable coating is thus arranged between the substrate and the further coating.
  • the optically variable coating can also be applied to the further coating.
  • the further coating is first applied to the substrate and then the optically variable coating is applied to it; the further coating is thus arranged between the substrate and the metallic or optically variable coating.
  • the optically variable coating is designed in the form of a pattern and represents visually perceptible information.
  • This can, for example, form a graphic image, an image, a number, a letter, a text or other characters.
  • the information particularly preferably consists of positive or negative motifs.
  • a motif element itself is applied to the substrate, whereas in the case of a negative motif, the area surrounding the motif element is applied to the substrate becomes.
  • a positive motif is, for example, a letter printed in dark color on the light substrate.
  • a negative motif is, for example, an area applied to the substrate in dark color, which has an unprinted area in the form of a letter within the area.
  • At least one of the dielectric layers of the multilayer structure capable of interference is made of silicon dioxide (SiO 2 ).
  • a dielectric layer can consist of a transparent printing layer which has a constant thickness.
  • the partially permeable layer of the multilayer structure capable of interference is preferably composed of at least chromium and / or nickel.
  • the transparent substrate, to which the security element according to the invention can be applied particularly preferably consists of at least one plastic film.
  • Transparency in the context of this invention means that the substrate allows 90% of the light incident on one side of the substrate to pass through to the other side, i.e. the substrate allows the incident light to pass through almost without being weakened, just like in a window.
  • a substrate that allows less than 10% of the incident light to pass through, i.e. in which the proportion of the light passing through, based on the incident light, is low, close to or equal to zero is referred to as opaque or not translucent.
  • a lacquer layer which preferably consists of an embossing lacquer, can particularly preferably be arranged between the security element and the carrier.
  • an embossing lacquer can be, for example, a UV lacquer, ie a lacquer that cures under the action of ultraviolet light, or a thermoplastic embossing lacquer. Diffractive ones are preferred in this embossing lacquer Embossed structures, holograms or micromirrors.
  • the thickness of this lacquer layer is 1 ⁇ m to 12 ⁇ m, preferably 2 ⁇ m to 7 ⁇ m.
  • Documents of value in which a security element according to the invention can be used are, in particular, banknotes, stocks, bonds, certificates, vouchers, checks, high-quality entry tickets, but also other forgery-prone papers, such as passports and other identification documents, as well as cards such as credit or debit cards, and also product security elements such as labels, seals, packaging and the like.
  • these documents of value have at least one opening over which the security element according to the invention is arranged.
  • the security element according to the invention is arranged on the surface of the value document in such a way that it at least partially overlaps the opening or opening of a value document.
  • the security element according to the invention completely overlaps the opening or opening of the value document, so that it closes the opening or opening of the value document.
  • Fig. 1 shows in Fig. 1a a value document 1, for example a bank note, with a security element according to the invention in a plan view from the front.
  • the security element according to the invention consists of a transparent carrier 2, for example a plastic film, which is arranged over an opening 3 or opening in the substrate of the document of value 1 and completely covers this opening 3 and projects beyond it on all sides.
  • a metallic coating 4 is applied to the carrier 2, which forms the lettering “PL” and is embodied in a silver-colored coating made of aluminum.
  • Figure 1b shows the value document 1 from Fig. 1a in side view along the section line AA.
  • the front of the document of value is denoted by the reference number 7 and the corresponding rear side by the reference number 6.
  • a further coating 5 is applied to the carrier 2, which in this exemplary embodiment completely covers the carrier 2 within the opening 3 and thus also the coating 4.
  • the further coating 5 consists of a colored layer which contains platelet-shaped metallic particles and shows a gold-colored hue in incident light and a blue hue in transmitted light.
  • a viewer 10 looks at the front side 7 of the value document 1, he recognizes in incident light, i.e. in the case of an illumination 8 from the front side 7, the silver-colored lettering PL of the metallic coating 4, which is arranged within a gold-colored rectangle of the coating 5, through the transparent carrier 2.
  • incident light i.e. in the case of an illumination 8 from the front side 7
  • the silver-colored lettering PL of the metallic coating 4 which is arranged within a gold-colored rectangle of the coating 5
  • the transparent carrier 2 When viewed in transmitted light, i.e. in the case of illumination 9 from the rear side 6, the viewer 10 recognizes the silver-colored lettering PL, which is arranged within a blue rectangle, through the transparent carrier 2.
  • a viewer 11 looks at the rear side 6 of the document of value 1, he recognizes a gold-colored rectangle which is formed by the coating 5 in incident light, ie with illumination 9 from the rear side 6 through the transparent carrier 2.
  • the viewer 11 recognizes a blue rectangle that is formed by the coating 5, and within the blue rectangle a dark, mirror-inverted lettering "PL", which is created by the metallic coating 4 is formed, which is covered by the coating 5.
  • Fig. 2 shows in Fig. 2a the security element off Figure 1b .
  • the coating 5 can also be designed in such a way that it does not completely cover the coating 4, but only overlaps it, so that the surface of the coating 4 is partially left free and partially covered and partially directly visible to a viewer 11.
  • the coating 5 also does not overlap the coating 4 at all, but rather merely be arranged adjacent to the coating 4, so that the surface of the coating 4 is left completely free and is directly visible to an observer 11.
  • the exemplary embodiments can also be from Figures 2a to 2c can be combined with one another as desired, for example part of the coating 4 being completely covered by the coating 5 (corresponding to Fig. 2a ), another part of the coating 4 is only partially overlapped by the coating 5 (corresponding to Figure 2b ) and another part of the coating 4 is arranged adjacent to the coating 5 (corresponding to Figure 2c ).

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  • Credit Cards Or The Like (AREA)
  • Laminated Bodies (AREA)

Description

Die Erfindung betrifft ein Sicherheitselement für Sicherheitspapiere, Wertdokumente oder dergleichen, das ein transparentes oder transluzentes Substrat aus einer Kunststofffolie aufweist, wobei auf das Substrat eine optisch variable Beschichtung aufgebracht ist.The invention relates to a security element for security papers, documents of value or the like, which has a transparent or translucent substrate made of a plastic film, an optically variable coating being applied to the substrate.

Ein Sicherheitselement mit einem Substrat, auf das eine optisch variable Beschichtung in Form eines interferenzfähigen, mehrschichtigen Aufbaus aufgebracht ist, ist beispielsweise aus der WO 2005/108110 A1 oder der WO 2005/038136 A1 bekannt. Hierbei besteht der interferenzfähige, mehrschichtige Aufbau aus einer Reflexionsschicht, einer dielektrischen Schicht und einer teildurchlässigen Schicht, wobei die dielektrische Schicht zwischen der Reflexionsschicht und der teildurchlässigen Schicht angeordnet ist. Ein derartiges Sicherheitselement wird aufgrund seiner Wirkungsweise auch als Dünnfilmschicht-Interferenzschicht-Aufbau oder als Color-Shift-Element bezeichnet.A security element with a substrate to which an optically variable coating in the form of a multilayer structure capable of interference is applied is, for example, from FIG WO 2005/108110 A1 or the WO 2005/038136 A1 known. The multilayer structure capable of interference here consists of a reflective layer, a dielectric layer, and a partially transparent layer, the dielectric layer being arranged between the reflective layer and the partially transparent layer. Such a security element is also referred to as a thin-film layer interference layer structure or as a color shift element due to its mode of operation.

Allgemein ist eine optisch variable Beschichtung im Sinne dieser Erfindung eine Beschichtung, deren visuelles Erscheinungsbild sich bei Verkippen des Elements ändert. Beispielsweise ändert sich bei Verkippen der optisch variablen Beschichtung deren Farbe von Lila nach Grün, bewegt sich scheinbar ein Balken von einer Seite des Elements zu einer anderen Seite, werden beim Verkippen unterschiedliche Zeichen dargestellt oder ergibt sich ein sogenannter Pumpeffekt in Form einer sich vergrößernden oder verkleinernden Umrisslinie eines Bildmotivs.In general, an optically variable coating in the context of this invention is a coating whose visual appearance changes when the element is tilted. For example, when the optically variable coating is tilted, its color changes from purple to green, a bar appears to move from one side of the element to another, if different characters are displayed when tilted, or a so-called pumping effect results in the form of an enlarging or decreasing effect Outline of an image motif.

Eine metallische Beschichtung im Sinne dieser Erfindung besteht aus einem Metall oder einem Material, das eine reflektierende und metallisch glänzende Oberfläche aufweist, beispielsweise eine Lackschicht, in die metallische Pigmente eingebettet sind.A metallic coating in the context of this invention consists of a metal or a material which has a reflective and metallic glossy surface, for example a lacquer layer in which metallic pigments are embedded.

Der Erfindung liegt die Aufgabe zugrunde, ein gattungsgemäßes Sicherheitselement derart weiterzubilden, dass der Schutz gegenüber Fälschungen weiter erhöht wird.The invention is based on the object of developing a generic security element in such a way that protection against counterfeiting is further increased.

Diese Aufgabe wird durch die Merkmale des unabhängigen Anspruchs gelöst. Weiterbildungen der Erfindung sind Gegenstand der abhängigen Ansprüche.This object is achieved by the features of the independent claim. Developments of the invention are the subject of the dependent claims.

Erfindungsgemäß ist auf dem Substrat eine weitere Beschichtung aufgebracht, wobei die optisch variable Beschichtung und die weitere Beschichtung derart angeordnet sind, dass sie aneinander angrenzen oder sich mindestens teilweise überlappen. Die weitere Beschichtung weist hierbei eine Farbschicht oder einen mehrschichtigen Aufbau auf, wobei die Farbschicht und der mehrschichtige Aufbau derart ausgestaltet sind, dass sie in Auflicht einen metallischen, bevorzugt goldenen oder bronzefarbenen Farbton und in Durchlicht einen bunten, bevorzugt blauen oder grünen Farbton zeigen. Durchlicht liegt hierbei vor, wenn die Beleuchtung eines Gegenstands von der einen Seite und die Betrachtung von der anderen Seite erfolgt. Auflicht liegt vor, wenn die Beleuchtung und Betrachtung von der-selben Seite eines Gegenstands aus erfolgen.According to the invention, a further coating is applied to the substrate, the optically variable coating and the further coating being arranged in such a way that they adjoin one another or at least partially overlap. The further coating here has a colored layer or a multilayer structure, the colored layer and the multilayer structure being designed in such a way that they show a metallic, preferably golden or bronze-colored hue in incident light and a colored, preferably blue or green hue in transmitted light. There is transmitted light when an object is illuminated from one side and viewed from the other side. Incident light occurs when the lighting and viewing take place from the same side of an object.

Als Farbschicht mit einem metallischen Farbton wird im Sinne dieser Erfindung eine Farbschicht bezeichnet, die eine metallisch spiegelnde Oberfläche mit einem metallfarbenen Farbton aufweist, der bevorzugt golden bzw. goldfarben, silbern bzw. silberfarben oder bronzefarben ist.For the purposes of this invention, a color layer with a metallic hue is a color layer which has a metallic reflective surface with a metal-colored shade which is preferably golden or gold-colored, silver or silver-colored or bronze-colored.

Als Farbschicht mit einem bunten Farbton wird im Sinne dieser Erfindung eine Farbschicht bezeichnet, die eine ein- oder mehrfarbige Oberfläche aufweist, bevorzugt eine einfarbig blaue, eine einfarbig grüne oder eine einfarbig rote.In the context of this invention, a colored layer with a colored hue is a colored layer which has a monochrome or multicolored surface, preferably a monochrome blue, a monochrome green or a monochrome red.

Erfindungsgemäß wird die weitere Beschichtung durch einen weiteren mehrschichtigen Aufbau gebildet, der mindestens zwei semitransparenten Spiegelschichten und mindestens eine zwischen den mindestens zwei Spiegelschichten angeordnete dielektrische Schicht aufweist, wie er beispielsweise aus der DE 10 2009 058 243 A1 , die ein Sicherheitselement nach dem Oberbegriff des Anspruchs 1 offenbart, bekannt ist. Die weitere Beschichtung zeigt hierbei bei Messung der Transmission von unpolarisiertem Licht im blauen Wellenlängenbereich von 420 nm bis 490 nm eine Resonanz mit einer Halbwertsbreite von 70 nm bis 150 nm. Bevorzugt ist die Resonanz der weiteren Beschichtung die einzige Resonanz im sichtbaren Bereich. Die mindestens zwei semitransparenten Spiegelschichten der Reflexionsschicht sind gebildet aus Aluminium oder einer Aluminium-Legierung, wobei die dielektrische Abstandsschicht mit einer Dicke h und einem Brechungsindex v die Relation 120 nm < h·v < 190 nm erfüllt.According to the invention, the further coating is formed by a further multilayer structure, which has at least two semitransparent mirror layers and at least one dielectric layer arranged between the at least two mirror layers, as it is, for example, from FIG DE 10 2009 058 243 A1 , which discloses a security element according to the preamble of claim 1, is known. When measuring the transmission of unpolarized light in the blue wavelength range from 420 nm to 490 nm, the further coating shows a resonance with a half width of 70 nm to 150 nm. The resonance of the further coating is preferably the only resonance in the visible range. The at least two semitransparent mirror layers of the reflective layer are formed from aluminum or an aluminum alloy, the dielectric spacer layer having a thickness h and a refractive index v fulfilling the relation 120 nm <h · v <190 nm.

Weitere Ausführungsformen und konkrete Dickenangaben zu den verwendeten Schichten des weiteren mehrschichtigen Aufbaus sind aus der DE 10 2009 058 243 A1 bekannt, auf die diesbezüglich verwiesen wird.Further embodiments and specific thicknesses of the layers used in the further multilayer structure are from FIG DE 10 2009 058 243 A1 known to which reference is made in this regard.

Gemäß einer bevorzugten Ausführungsform ist die weitere Beschichtung auf die optisch variable Beschichtung aufgebracht. Hierbei wird zunächst die optisch variable Beschichtung auf das Substrat aufgebracht und darauf anschließend die weitere Beschichtung aufgebracht, die optisch variable Beschichtung ist also zwischen dem Substrat und der weiteren Beschichtung angeordnet. Alternativ dazu kann jedoch auch die optisch variable Beschichtung auf die weitere Beschichtung aufgebracht sein. Hierbei wird zunächst die weitere Beschichtung auf das Substrat aufgebracht und darauf anschließend die optisch variable Beschichtung aufgebracht, die weitere Beschichtung ist also zwischen dem Substrat und der metallischen oder optisch variablen Beschichtung angeordnet.According to a preferred embodiment, the further coating is applied to the optically variable coating. In this case, the optically variable coating is first applied to the substrate and then subsequently the further coating is applied, the optically variable coating is thus arranged between the substrate and the further coating. As an alternative to this, however, the optically variable coating can also be applied to the further coating. In this case, the further coating is first applied to the substrate and then the optically variable coating is applied to it; the further coating is thus arranged between the substrate and the metallic or optically variable coating.

Erfindungsgemäß besteht die optisch variable Beschichtung aus

  • einem interferenzfähigen, mehrschichtigen Aufbau, wobei der interferenzfähige, mehrschichtige Aufbau mindestens die folgenden Schichten aufweist: eine Reflexionsschicht, eine dielektrische Schicht und eine teildurchlässige Schicht, wobei die dielektrische Schicht zwischen der Reflexionsschicht und der teildurchlässigen Schicht angeordnet ist, oder
  • einem mehrschichtigen Aufbau, wobei der mehrschichtige Aufbau mindestens die folgenden Schichten aufweist: eine dielektrische Schicht und eine teildurchlässige Schicht, wobei die dielektrische Schicht zwischen der weiteren Beschichtung und der teildurchlässigen Schicht angeordnet ist.
According to the invention, the optically variable coating consists of
  • an interference-capable, multilayer structure, wherein the interference-capable, multilayer structure has at least the following layers: a reflective layer, a dielectric layer and a partially transparent layer, wherein the dielectric layer is arranged between the reflective layer and the partially transparent layer, or
  • a multilayer structure, the multilayer structure having at least the following layers: a dielectric layer and a partially transparent layer, the dielectric layer being arranged between the further coating and the partially transparent layer.

Gemäß einer bevorzugten Ausführungsform ist die optisch variable Beschichtung musterförmig gestaltet und stellt eine visuell wahrnehmbare Information dar. Diese kann beispielsweise eine graphische Abbildung, ein Bild, eine Zahl, einen Buchstaben, einen Text oder sonstige Zeichen bilden. Besonders bevorzugt besteht die Information dabei aus positiven oder negativen Motiven. Bei einem positiven Motiv wird hierbei ein Motivelement selbst auf das Substrat aufgebracht, wohingegen bei einem negativen Motiv der das Motivelement umgebende Bereich auf das Substrat aufgebracht wird. Ein positives Motiv ist beispielsweise ein in dunkler Farbe auf das helle Substrat aufgedruckter Buchstabe. Ein negatives Motiv ist beispielsweise eine in dunkler Farbe auf das Substrat aufgebrachte Fläche, die innerhalb der Fläche einen unbedruckten Bereich in Form eines Buchstabens aufweist.According to a preferred embodiment, the optically variable coating is designed in the form of a pattern and represents visually perceptible information. This can, for example, form a graphic image, an image, a number, a letter, a text or other characters. The information particularly preferably consists of positive or negative motifs. In the case of a positive motif, a motif element itself is applied to the substrate, whereas in the case of a negative motif, the area surrounding the motif element is applied to the substrate becomes. A positive motif is, for example, a letter printed in dark color on the light substrate. A negative motif is, for example, an area applied to the substrate in dark color, which has an unprinted area in the form of a letter within the area.

Gemäß einer weiteren bevorzugten Ausführungsform ist vorgesehen, dass wenigstens eine der dielektrischen Schichten des interferenzfähigen, mehrschichtigen Aufbaus aus Silizium-Dioxid (SiO2) besteht. Alternativ kann eine dielektrische Schicht aus einer transparenten Druckschicht bestehen, die eine konstante Dicke aufweist. Die teildurchlässige Schicht des interferenzfähigen, mehrschichtigen Aufbaus besteht bevorzugt mindestens aus Chrom und/oder Nickel.According to a further preferred embodiment, it is provided that at least one of the dielectric layers of the multilayer structure capable of interference is made of silicon dioxide (SiO 2 ). Alternatively, a dielectric layer can consist of a transparent printing layer which has a constant thickness. The partially permeable layer of the multilayer structure capable of interference is preferably composed of at least chromium and / or nickel.

Das transparente Substrat, auf das das erfindungsgemäße Sicherheitselement aufgebracht sein kann, besteht besonders bevorzugt aus mindestens einer Kunststofffolie. Transparenz im Sinne dieser Erfindung bedeutet, dass das Substrat 90 % des auf eine Seite des Substrats auftreffenden Lichts bis zu der anderen Seite hindurchtreten lässt, d.h. das Substrat lässt das auftreffende Licht wie bei einem Fenster nahezu ungeschwächt hindurchtreten. Ein Substrat hingegen, das weniger als 10 % des auftreffenden Lichtes hindurchtreten lässt, d.h. bei dem der Anteil des hindurchtretenden Lichtes, bezogen auf das auftreffende Licht, gering oder nahe oder gleich Null ist, wird als opak oder als nicht lichtdurchlässig bezeichnet.The transparent substrate, to which the security element according to the invention can be applied, particularly preferably consists of at least one plastic film. Transparency in the context of this invention means that the substrate allows 90% of the light incident on one side of the substrate to pass through to the other side, i.e. the substrate allows the incident light to pass through almost without being weakened, just like in a window. On the other hand, a substrate that allows less than 10% of the incident light to pass through, i.e. in which the proportion of the light passing through, based on the incident light, is low, close to or equal to zero, is referred to as opaque or not translucent.

Besonders bevorzugt kann zwischen dem Sicherheitselement und dem Träger eine Lackschicht angeordnet sein, die bevorzugt aus einem Prägelack besteht. Ein derartiger Prägelack kann beispielsweise ein UV-Lack sein, d.h. ein Lack, der unter Einwirkung von ultraviolettem Licht aushärtet, oder ein thermoplastischer Prägelack. In diesen Prägelack werden bevorzugt diffraktive Strukturen, Hologramme oder Mikrospiegel geprägt. Die Dicke dieser Lackschicht beträgt 1 µm bis 12 µm, bevorzugt 2 µm bis 7 µm.A lacquer layer, which preferably consists of an embossing lacquer, can particularly preferably be arranged between the security element and the carrier. Such an embossing lacquer can be, for example, a UV lacquer, ie a lacquer that cures under the action of ultraviolet light, or a thermoplastic embossing lacquer. Diffractive ones are preferred in this embossing lacquer Embossed structures, holograms or micromirrors. The thickness of this lacquer layer is 1 μm to 12 μm, preferably 2 μm to 7 μm.

Wertdokumente, in denen ein erfindungsgemäßes Sicherheitselement verwendet werden kann, sind insbesondere Banknoten, Aktien, Anleihen, Urkunden, Gutscheine, Schecks, hochwertige Eintrittskarten, aber auch andere fälschungsgefährdete Papiere, wie Pässe und sonstige Ausweisdokumente, sowie Karten, wie beispielsweise Kredit- oder Debitkarten, und auch Produktsicherungselemente, wie Etiketten, Siegel, Verpackungen und dergleichen.Documents of value in which a security element according to the invention can be used are, in particular, banknotes, stocks, bonds, certificates, vouchers, checks, high-quality entry tickets, but also other forgery-prone papers, such as passports and other identification documents, as well as cards such as credit or debit cards, and also product security elements such as labels, seals, packaging and the like.

Besonders bevorzugt weisen diese Wertdokumente mindestens eine Öffnung auf, über der das erfindungsgemäße Sicherheitselement angeordnet wird. Das erfindungsgemäße Sicherheitselement ist hierbei derart auf der Oberfläche des Wertdokuments angeordnet, dass es die Öffnung bzw. Durchbrechung eines Wertdokuments mindestens teilweise überlappt. Besonders bevorzugt überlappt das erfindungsgemäße Sicherheitselement die Öffnung bzw. Durchbrechung des Wertdokuments vollständig, so dass es die Öffnung bzw. Durchbrechung des Wertdokuments verschließt.Particularly preferably, these documents of value have at least one opening over which the security element according to the invention is arranged. The security element according to the invention is arranged on the surface of the value document in such a way that it at least partially overlaps the opening or opening of a value document. Particularly preferably, the security element according to the invention completely overlaps the opening or opening of the value document, so that it closes the opening or opening of the value document.

Es versteht sich, dass die vorstehend genannten und die nachfolgend noch zu erläuternden Merkmale nicht nur in den angegebenen Kombinationen, sondern auch in anderen Kombinationen einsetzbar sind, ohne den Rahmen der vorliegenden Erfindung zu verlassen, soweit dies von dem Schutzumfang der Ansprüche erfasst ist.It goes without saying that the features mentioned above and those yet to be explained below can be used not only in the specified combinations but also in other combinations without departing from the scope of the present invention, insofar as this is covered by the scope of protection of the claims.

Anhand der nachfolgenden Ausführungsbeispiele und der ergänzenden Figuren werden die Vorteile der Erfindung erläutert. Die Ausführungsbeispiele stellen bevorzugte Ausführungsformen dar, auf die jedoch die Erfindung in keinerlei Weise beschränkt sein soll. Des Weiteren sind die Darstellungen in den Figuren des besseren Verständnisses wegen stark schematisiert und spiegeln nicht die realen Gegebenheiten wieder. Insbesondere entsprechen die in den Figuren gezeigten Proportionen nicht den in der Realität vorliegenden Verhältnissen und dienen ausschließlich zur Verbesserung der Anschaulichkeit. Des Weiteren sind die in den folgenden Ausführungsbeispielen beschriebenen Ausführungsformen der besseren Verständlichkeit wegen auf die wesentlichen Kerninformationen reduziert. Bei der praktischen Umsetzung können wesentlich komplexere Muster oder Bilder zur Anwendung kommen.The advantages of the invention are explained on the basis of the following exemplary embodiments and the supplementary figures. The exemplary embodiments represent preferred embodiments which, however, relate to the invention should not be restricted in any way. Furthermore, the representations in the figures are highly schematic for better understanding and do not reflect the real conditions. In particular, the proportions shown in the figures do not correspond to the conditions present in reality and serve exclusively to improve the clarity. Furthermore, the embodiments described in the following exemplary embodiments are reduced to the essential core information for better understanding. In the practical implementation, much more complex patterns or images can be used.

Im Einzelnen zeigen schematisch:

Fig. 1
ein Wertdokument mit einem erfindungsgemäße Sicherheitselement und hierbei in Fig. 1a in Draufsicht von der Vorderseite und in Fig. 1b in Seitenansicht entlang der Schnittlinie A-A,
Fig. 2
ein erfindungsgemäßes Sicherheitselement aus Fig. 1b in drei verschiedenen Ausführungsformen gemäß Fig. 2a bis Fig. 2c.
In detail show schematically:
Fig. 1
a value document with a security element according to the invention and here in Fig. 1a in plan view from the front and in Figure 1b in side view along section line AA,
Fig. 2
a security element according to the invention Figure 1b in three different embodiments according to Figures 2a to 2c .

Fig. 1 zeigt in Fig. 1a ein Wertdokument 1, beispielsweise eine Banknote, mit einem erfindungsgemäßen Sicherheitselement in Draufsicht von der Vorderseite. Das erfindungsgemäße Sicherheitselement besteht aus einem transparenten Träger 2, beispielsweise einer Kunststofffolie, die über einer Öffnung 3 oder Durchbrechung des Substrats des Wertdokuments 1 angeordnet ist und diese Öffnung 3 vollständig überdeckt und allseitig überragt. Auf dem Träger 2 ist eine metallische Beschichtung 4 aufgebracht, die den Schriftzug "PL" bildet und in einer silberfarbenen Beschichtung aus Aluminium ausgeführt ist. Fig. 1 shows in Fig. 1a a value document 1, for example a bank note, with a security element according to the invention in a plan view from the front. The security element according to the invention consists of a transparent carrier 2, for example a plastic film, which is arranged over an opening 3 or opening in the substrate of the document of value 1 and completely covers this opening 3 and projects beyond it on all sides. A metallic coating 4 is applied to the carrier 2, which forms the lettering “PL” and is embodied in a silver-colored coating made of aluminum.

Fig. 1b zeigt das Wertdokument 1 aus Fig. 1a in Seitenansicht entlang der Schnittlinie A-A. Die Vorderseite des Wertdokuments ist mit der Bezugsziffer 7 und die entsprechende Rückseite mit der Bezugsziffer 6 bezeichnet. Auf dem Träger 2 ist eine weitere Beschichtung 5 aufgebracht, die in diesem Ausführungsbeispiel den Träger 2 innerhalb der Öffnung 3 und damit auch die Beschichtung 4 vollständig überdeckt. Die weitere Beschichtung 5 besteht in diesem Ausführungsbeispiel aus einer Farbschicht, die plättchenförmige metallische Partikel enthält, und in Auflicht einen goldfarbenen Farbton und in Durchlicht einen blauen Farbton zeigt. Figure 1b shows the value document 1 from Fig. 1a in side view along the section line AA. The front of the document of value is denoted by the reference number 7 and the corresponding rear side by the reference number 6. A further coating 5 is applied to the carrier 2, which in this exemplary embodiment completely covers the carrier 2 within the opening 3 and thus also the coating 4. In this exemplary embodiment, the further coating 5 consists of a colored layer which contains platelet-shaped metallic particles and shows a gold-colored hue in incident light and a blue hue in transmitted light.

Blickt ein Betrachter 10 auf die Vorderseite 7 des Wertdokuments 1, erkennt er in Auflicht, d.h. bei einer Beleuchtung 8 von der Vorderseite 7, durch den transparenten Träger 2 hindurch den silberfarbenen Schriftzug PL der metallischen Beschichtung 4, der innerhalb einem goldfarbenen Rechteck der Beschichtung 5 angeordnet ist. Bei Betrachtung in Durchlicht, d.h. bei einer Beleuchtung 9 von der Rückseite 6, erkennt der Betrachter 10 durch den transparenten Träger 2 hindurch den silberfarbenen Schriftzug PL, der innerhalb einem blauen Rechteck angeordnet ist.If a viewer 10 looks at the front side 7 of the value document 1, he recognizes in incident light, i.e. in the case of an illumination 8 from the front side 7, the silver-colored lettering PL of the metallic coating 4, which is arranged within a gold-colored rectangle of the coating 5, through the transparent carrier 2. When viewed in transmitted light, i.e. in the case of illumination 9 from the rear side 6, the viewer 10 recognizes the silver-colored lettering PL, which is arranged within a blue rectangle, through the transparent carrier 2.

Blickt ein Betrachter 11 auf die Rückseite 6 des Wertdokuments 1, erkennt er in Auflicht, d.h. bei einer Beleuchtung 9 von der Rückseite 6 durch den transparenten Träger 2 hindurch, ein goldfarbenes Rechteck, das durch die Beschichtung 5 gebildet wird. Bei Betrachtung in Durchlicht, d.h. bei einer Beleuchtung 8 von der Vorderseite 7, erkennt der Betrachter 11 ein blaues Rechteck, das durch die Beschichtung 5 gebildet wird, und innerhalb des blauen Rechtecks einen dunklen, spiegelverkehrten Schriftzug "PL", der durch die metallische Beschichtung 4 gebildet wird, die durch die Beschichtung 5 überdeckt ist.If a viewer 11 looks at the rear side 6 of the document of value 1, he recognizes a gold-colored rectangle which is formed by the coating 5 in incident light, ie with illumination 9 from the rear side 6 through the transparent carrier 2. When viewing in transmitted light, ie with illumination 8 from the front side 7, the viewer 11 recognizes a blue rectangle that is formed by the coating 5, and within the blue rectangle a dark, mirror-inverted lettering "PL", which is created by the metallic coating 4 is formed, which is covered by the coating 5.

Fig. 2 zeigt in Fig. 2a das Sicherheitselement aus Fig. 1b. Fig. 2 shows in Fig. 2a the security element off Figure 1b .

Alternativ kann gemäß Fig. 2b die Beschichtung 5 auch so ausgeführt sein, dass sie die Beschichtung 4 nicht vollständig bedeckt, sondern nur überlappt, so dass die Oberfläche der Beschichtung 4 teilweise freigelassen und für einen Betrachter 11 teilweise überdeckt und teilweise direkt sichtbar wird.Alternatively, according to Figure 2b the coating 5 can also be designed in such a way that it does not completely cover the coating 4, but only overlaps it, so that the surface of the coating 4 is partially left free and partially covered and partially directly visible to a viewer 11.

Alternativ kann gemäß Fig. 2c die Beschichtung 5 die Beschichtung 4 auch gar nicht überlappen, sondern lediglich angrenzend an die Beschichtung 4 angeordnet sein, so dass die Oberfläche der Beschichtung 4 vollständig freigelassen und für einen Betrachter 11 direkt sichtbar wird.Alternatively, according to Figure 2c the coating 5 also does not overlap the coating 4 at all, but rather merely be arranged adjacent to the coating 4, so that the surface of the coating 4 is left completely free and is directly visible to an observer 11.

Selbstverständlich können auch die Ausführungsbeispiele aus Fig. 2a bis Fig. 2c beliebig miteinander kombiniert werden, wobei beispielsweise ein Teil der Beschichtung 4 vollständig von der Beschichtung 5 überdeckt wird (entsprechend Fig. 2a), ein anderer Teil der Beschichtung 4 von der Beschichtung 5 nur teilweise überlappt wird (entsprechend Fig. 2b) und ein anderer Teil der Beschichtung 4 angrenzend an die Beschichtung 5 angeordnet ist (entsprechend Fig. 2c).Of course, the exemplary embodiments can also be from Figures 2a to 2c can be combined with one another as desired, for example part of the coating 4 being completely covered by the coating 5 (corresponding to Fig. 2a ), another part of the coating 4 is only partially overlapped by the coating 5 (corresponding to Figure 2b ) and another part of the coating 4 is arranged adjacent to the coating 5 (corresponding to Figure 2c ).

Claims (6)

  1. Security element for security papers (1), valuable documents or the like, comprising a transparent substrate (2) made of a plastics film, wherein an optically variable coating (4) is applied onto the substrate (2), characterized in that a further coating (5) is applied on the substrate, wherein the optically variable coating (4) and the further coating (5) are arranged such that they adjoin one another or at least partially overlap, wherein the further coating (5) comprises a colour layer or a multilayer system, wherein the colour layer or the multilayer system shows a metallic hue in incident light and shows a coloured hue in transmitted light, wherein
    • the optically variable coating (4) consists of a multilayer system capable of interference, wherein the multilayer system capable of interference comprises at least the following layers: a reflection layer, a dielectric layer and a partially transmissive layer, wherein the dielectric layer is arranged between the reflection layer and the partially transmissive layer, or
    • the optically variable coating (4) consists of a multilayer system, wherein the multilayer system comprises at least the following layers: a dielectric layer and a partially transmissive layer, wherein the dielectric layer is arranged between the further coating (5) and the partially transmissive layer,
    wherein the further coating (5) consists of a multilayer system that comprises at least two semi-transparent mirror layers and at least one dielectric layer arranged between the at least two mirror layers, wherein, upon measurement of the transmission of unpolarized light in the blue wavelength range from 420 nm to 490 nm, the further coating (5) exhibits a resonance with full width at half maximum of 70 nm to 150 nm, characterized in that the at least two semi-transparent mirror layers are formed from aluminium or an aluminium alloy and the dielectric spacer layer having a thickness h and a refractive index v satisfies the relation 120 nm < h v < 190 nm.
  2. Security element according to Claim 1, characterized in that the resonance is the only resonance in the visible range.
  3. Security element according to at least one of the preceding claims, characterized in that the further coating (5) is applied on the optically variable coating (4) or the metallic or optically variable coating (4) is applied on the coating (5).
  4. Security element according to at least one of the preceding claims, characterized in that the optically variable coating (4) is designed in the shape of a pattern and represents a visually perceivable piece of information, such as a graphic depiction, an image, a number, a letter, a text or other characters.
  5. Security element according to at least one of the preceding claims, characterized in that at least one of the dielectric layers consists of a transparent print layer or of silicon dioxide.
  6. Security element according to at least one of the preceding claims, characterized in that the partially transmissive layer at least consists of chromium and/or nickel.
EP16715460.8A 2015-04-28 2016-04-11 Security element having two security features that adjoin each other Active EP3288772B1 (en)

Applications Claiming Priority (2)

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DE102015005453.8A DE102015005453A1 (en) 2015-04-28 2015-04-28 Security element with two adjacent security features
PCT/EP2016/000596 WO2016173695A1 (en) 2015-04-28 2016-04-11 Security element having two security features that adjoin each other

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EP3288772A1 EP3288772A1 (en) 2018-03-07
EP3288772B1 true EP3288772B1 (en) 2020-08-26

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CN (1) CN107531080B (en)
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AU2019369033A1 (en) * 2018-10-25 2021-05-06 Basf Se Compositions, comprising silver nanoplatelets
AU2020210698A1 (en) 2019-01-21 2021-07-15 Basf Se Security element
CN113272087B (en) * 2019-01-29 2024-04-19 巴斯夫欧洲公司 Security element
US20220220284A1 (en) 2019-05-06 2022-07-14 Basf Se Compositions, comprising silver nanoplatelets
EP4139070A1 (en) 2020-04-23 2023-03-01 Basf Se Compositions, comprising platelet-shaped transition metal particles
AU2022216794A1 (en) 2021-02-03 2023-09-21 Basf Se Compositions, comprising silver nanoplatelets
CN117321151A (en) 2021-05-12 2023-12-29 巴斯夫欧洲公司 Composition comprising flaky transition metal particles
WO2023072740A1 (en) 2021-10-26 2023-05-04 Basf Se A method for producing interference elements

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DE10349000A1 (en) 2003-10-17 2005-05-19 Giesecke & Devrient Gmbh Security element with color shift effect
DE102004022080A1 (en) 2004-05-05 2005-11-24 Giesecke & Devrient Gmbh Value document with visually recognizable markings
EP1791702B9 (en) * 2005-01-14 2011-09-14 Cabot Corporation Security features, their use, and processes for making them
DE102007030219A1 (en) * 2007-02-13 2008-08-14 Giesecke & Devrient Gmbh Security element for a value document
GB0714141D0 (en) * 2007-07-19 2007-08-29 Rue De Int Ltd security device
RU2562031C2 (en) 2009-11-27 2015-09-10 Басф Се Compositions for coating security elements and holograms
DE102009058243A1 (en) * 2009-12-14 2011-06-16 Giesecke & Devrient Gmbh Thin-film element with multilayer structure

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WO2016173695A1 (en) 2016-11-03
CN107531080B (en) 2019-11-19
EP3288772A1 (en) 2018-03-07
DE102015005453A1 (en) 2016-11-03
CN107531080A (en) 2018-01-02

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