EP3290225B1 - Security element with a plurality of security features - Google Patents
Security element with a plurality of security features Download PDFInfo
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- EP3290225B1 EP3290225B1 EP17001359.3A EP17001359A EP3290225B1 EP 3290225 B1 EP3290225 B1 EP 3290225B1 EP 17001359 A EP17001359 A EP 17001359A EP 3290225 B1 EP3290225 B1 EP 3290225B1
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- Prior art keywords
- layer
- optically variable
- metallic
- security element
- substrate
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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
- B42D25/40—Manufacture
- B42D25/45—Associating two or more layers
- B42D25/465—Associating two or more layers using chemicals or adhesives
- B42D25/47—Associating two or more layers using chemicals or adhesives using adhesives
Definitions
- the invention relates to methods for producing a security element for security papers, documents of value or the like, which has a transparent or translucent substrate made of a plastic film, a metallic or optically variable coating being applied to the substrate.
- a security element with a substrate, to which an optically variable coating in the form of an interference-capable, multilayer structure is applied is for example from US Pat WO 2005/108110 A1 or the WO 2005/038136 A1 known.
- the multi-layer structure capable of interference consists of a reflection layer, a dielectric layer and a partially transparent layer, the dielectric layer being arranged between the reflective layer and the partially transparent layer. Because of its mode of operation, such a security element is also referred to as a thin film layer interference layer structure or as a color shift element.
- an optically variable coating in the sense of this invention is a coating whose visual appearance changes when the Elements changes. 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, different characters are displayed when tilted, or there is a so-called pumping effect in the form of an enlarging or reducing Outline of a picture motif.
- An optically variable coating is also a coating into which a diffractive structure known from the prior art or a hologram is embossed.
- a metallic coating in the sense of this invention consists of a metal or a material that has a reflective and shiny metallic surface, for example a lacquer layer in which metallic pigments are embedded.
- the invention has for its object to develop a generic security element such that the protection against counterfeiting is further increased.
- a security element for security papers, documents of value or the like is produced with the method steps according to claim 1.
- Translucency in the sense of this invention means that an object, such as the substrate or the plastic film, allows incident light to pass through in a certain proportion. If light strikes one side of the object, a certain proportion of the light is let through to the other side of the object and exits there. The greater the percentage of light passing through based on the incident light, the more translucent the object. If the percentage is at least 90%, i.e. if the object allows the incident light to pass through almost unattenuated like a window, the object is said to be transparent.
- An object, however, that allows less than 10% and preferably about 0% of the incident light to pass through, i.e. in which the proportion of the light passing through is small or close to or equal to zero in relation to the incident light, is referred to as opaque or not translucent.
- a register or register in the sense of this invention, the positional accuracy of printed images or other elements relative to one another on the front and / or back of a substrate or on different substrates designated. For example, even small deviations of less than 0.1 mm between the respective printed images considerably disrupt the visual impression when looking through in the case of parts of printed images which complement one another to form an overall printed image.
- DIN 16500-2: 1987-01 defines the accuracy in printing technology with which the intended reproduction quality of the details to be reproduced is achieved or maintained.
- diffractive structures and / or micromirrors are introduced into the first substrate before method step [1.2] and in step [1.2] the first optically variable coating is arranged on the diffractive structures and / or micromirrors.
- diffractive structures and / or micromirrors can be introduced into the second substrate before method step [1.4] and in step [1.4] the second metallic or optically variable coating is arranged on the diffractive structures and / or micromirrors.
- the first optically variable coating is formed by a color layer which contains platelet-shaped metallic particles whose longest edge length is 15 nm to 1000 nm and whose thickness is 2 nm to 100 nm, so that the color layer is reflected in incident light metallic, preferably golden hue and in transmitted light shows a colorful, preferably blue hue.
- the platelet-shaped metallic particles preferably have a longest edge length of 15 nm to 600 nm and particularly preferably 20 nm to 500 nm and a thickness of 2 nm to 40 nm and particularly preferably 4 nm to 30 nm.
- a color layer is, for example, from the WO 2011/064162 A2 known and is also called gold-blue color. Transmitted light is present when an object is illuminated from one side and viewed from the other side. incident is when the lighting and viewing are from the same side of an object.
- a color layer with a metallic color tone is a color layer that has a metallic reflecting surface with a metallic color tone that is preferably golden or gold-colored, silver-colored or silver-colored or bronze-colored.
- a color layer with a colored hue is a color layer which has a single or multi-colored surface, preferably a single-color blue, a single-color green or a single-color red.
- the metallic coating consists of a metal, preferably of aluminum.
- a gold-blue effect can be obtained with other colors of a top view / see-through effect with a hologram or with micromirrors.
- a top view shows gold and see through blue and a top view shows purple and see through green.
- a film composite that contains two different metallic overlay colors and two different see-through colors thus results particularly advantageously.
- a printing acceptance layer which would have to be laminated or printed on the first film anyway, is also present due to the lamination. An additional effort or additional expense is therefore only due to the embossing of the UV varnish and the metallization.
- a film composite can be produced which contains areas with a gold-blue effect obtained in the PVD process in addition to color shift or aluminum areas.
- the color palette mentioned above is by no means limited to gold / blue.
- Other colors or see-through colors are e.g. B. pink / turquoise; Silver / Purple; Blue yellow; Purple / green.
- the invention is not only limited to the gold-blue effect mentioned above, but other color pairs can also be used, since the different color impressions result only from the layer thickness of the dielectric layer.
- the metallic or optically variable coating is designed in a pattern and represents visually perceptible information.
- This can form, for example, a graphic illustration, an image, a number, a letter, a text or other characters.
- the information particularly preferably consists of positive or negative motifs.
- a positive motif a motif element itself is applied to the substrate, whereas with a negative motif the area surrounding the motif element is applied to the substrate.
- a positive motif is, for example, a letter printed in dark color on the light substrate.
- a negative motif is, for example, a surface that is applied to the substrate in dark color and has an unprinted area in the form of a letter within the surface.
- At least one of the dielectric layers of the interference-capable, multilayer structure consists of silicon dioxide (SiO 2 ).
- a dielectric layer can consist of a transparent printing layer that has a constant thickness.
- the partially permeable layer of the multi-layer structure capable of interference preferably consists of at least chromium and / or nickel.
- a film which contains areas with a gold-blue effect obtained in the PVD process in addition to color shift or aluminum areas cannot be produced on a film by a mere metallization known from the prior art, since there are too few control marks, liability problems occur and multiple wash color printing is required.
- the translucent, preferably transparent substrate, on which the security element according to the invention can be applied particularly preferably consists of at least one plastic film.
- 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, for example, be a UV lacquer, i.e. a varnish that hardens under the influence of ultraviolet light, or a thermoplastic embossing varnish. Diffractive structures, holograms or micromirrors are preferably embossed in this embossing lacquer.
- the thickness of this lacquer layer is 1 ⁇ m to 12 ⁇ m, preferably 2 ⁇ m to 7 ⁇ m.
- Valuable documents in which a security element according to the invention can be used are, in particular, banknotes, shares, bonds, certificates, vouchers, checks, high-quality admission tickets, but also other papers which are at risk of forgery, such as passports and other identification documents, as well as cards, such as credit or debit cards, and also product securing elements such as labels, seals, packaging and the like.
- These documents of value particularly preferably have at least one opening, above which the security element according to the invention is arranged.
- the security element according to the invention is arranged on the surface of the document of value in such a way that it at least partially overlaps the opening or opening of a document of value.
- the security element according to the invention particularly preferably completely overlaps the opening or opening of the value document, so that it closes the opening or opening of the value document.
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Description
Die Erfindung betrifft Verfahren zur Herstellung eines Sicherheitselements für Sicherheitspapiere, Wertdokumente oder dergleichen, das ein transparentes oder transluzentes Substrat aus einer Kunststofffolie aufweist, wobei auf das Substrat eine metallische oder optisch variable Beschichtung aufgebracht ist.The invention relates to methods for producing a security element for security papers, documents of value or the like, which has a transparent or translucent substrate made of a plastic film, a metallic or 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
Das Dokument
Verfahren zur Herstellung eines Sicherheitselements für Sicherheitspapiere, Wertdokumente oder dergleichen, mit den folgende Schritten:
- 1.1 Bereitstellen eines ersten Substrats aus einer transluzenten Kunststofffolie,
- 1.2 Aufbringen einer ersten Beschichtung auf das erste Substrat,
- 1.3 Bereitstellen eines zweiten Substrats aus einer Kunststofffolie,
- 1.4 Aufbringen einer zweiten optisch variablen Beschichtung auf das zweite Substrat, wobei sich die zweite optisch variable Beschichtung von der ersten Beschichtung unterscheidet,
- 1.5 Registergenaues Kaschieren des ersten Substrats auf das zweite Substrat, so dass sich eine mehrschichtige Aufbau ergibt,
- 1.6 Abziehen des zweiten Substrats von dem mehrschichtigen Aufbau.
Method for producing a security element for security papers, security documents or the like, with the following steps:
- 1.1 providing a first substrate from a translucent plastic film,
- 1.2 applying a first coating to the first substrate,
- 1.3 providing a second substrate from a plastic film,
- 1.4 applying a second optically variable coating to the second substrate, the second optically variable coating being different from the first coating,
- 1.5 Laminating the first substrate onto the second substrate with register accuracy, so that a multilayer structure results,
- 1.6 Peeling the second substrate from the multilayer structure.
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. Eine optisch variable Beschichtung ist des Weiteren eine Beschichtung, in die eine aus dem Stand der Technik bekannte diffraktive Struktur oder ein Hologramm eingeprägt ist.In general, an optically variable coating in the sense of this invention is a coating whose visual appearance changes when the Elements changes. 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, different characters are displayed when tilted, or there is a so-called pumping effect in the form of an enlarging or reducing Outline of a picture motif. An optically variable coating is also a coating into which a diffractive structure known from the prior art or a hologram is embossed.
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 sense of this invention consists of a metal or a material that has a reflective and shiny metallic 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 has for its object to develop a generic security element such that the 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 solved by the features of the independent claim. Further developments of the invention are the subject of the dependent claims.
Erfindungsgemäß wird ein Sicherheitselement für Sicherheitspapiere, Wertdokumente oder dergleichen, mit den Verfahrensschritten nach Anspruch 1 hergestellt.According to the invention, a security element for security papers, documents of value or the like is produced with the method steps according to claim 1.
Transluzenz im Sinne dieser Erfindung bedeutet, dass ein Objekt, wie das Substrat oder die Kunststofffolie, auftreffendes Licht in einem bestimmten Anteil hindurchtreten lässt. Trifft Licht auf eine Seite des Objekts auf, wird ein bestimmter Anteil des Lichtes bis zu der anderen Seite des Objekts hindurch gelassen und tritt dort wieder aus. Je größer der prozentuale Anteil des hindurchtretenden Lichtes bezogen auf das auftreffende Licht ist, desto transluzenter ist das Objekt. Liegt der prozentuale Anteil bei mindestens 90 %, d.h. lässt das Objekt das auftreffende Licht wie bei einem Fenster nahezu ungeschwächt hindurchtreten, wird das Objekt als transparent bezeichnet. Ein Objekt hingegen, das weniger als 10 % und bevorzugt etwa 0 % 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.Translucency in the sense of this invention means that an object, such as the substrate or the plastic film, allows incident light to pass through in a certain proportion. If light strikes one side of the object, a certain proportion of the light is let through to the other side of the object and exits there. The greater the percentage of light passing through based on the incident light, the more translucent the object. If the percentage is at least 90%, i.e. if the object allows the incident light to pass through almost unattenuated like a window, the object is said to be transparent. An object, however, that allows less than 10% and preferably about 0% of the incident light to pass through, i.e. in which the proportion of the light passing through is small or close to or equal to zero in relation to the incident light, is referred to as opaque or not translucent.
Als Passer oder Register im Sinne dieser Erfindung wird die Lagegenauigkeit von Druckbildern oder anderer Elemente zueinander auf Vorder- und/oder Rückseite eines Substrats oder auf unterschiedlichen Substraten bezeichnet. Beispielsweise stören bei Teilen von Druckbildern, die sich in Durchsicht zu einem Gesamtdruckbild ergänzen, bereits geringe Abweichungen von weniger als 0,1 mm zwischen den jeweiligen Druckbildern den visuellen Eindruck in Durchsicht erheblich. Die DIN 16500-2: 1987-01 definiert als Passer die Genauigkeit in der Drucktechnik, mit der die vorgesehene Wiedergabegüte der zu reproduzierenden Details erreicht bzw. eingehalten wird.As a register or register in the sense of this invention, the positional accuracy of printed images or other elements relative to one another on the front and / or back of a substrate or on different substrates designated. For example, even small deviations of less than 0.1 mm between the respective printed images considerably disrupt the visual impression when looking through in the case of parts of printed images which complement one another to form an overall printed image. As a register, DIN 16500-2: 1987-01 defines the accuracy in printing technology with which the intended reproduction quality of the details to be reproduced is achieved or maintained.
Gemäß einer bevorzugten Ausführungsform werden vor Verfahrensschritt [1.2] diffraktive Strukturen und/oder Mikrospiegel in das erste Substrat eingebracht und wird in Schritt [1.2] die erste optisch variable Beschichtung auf den diffraktiven Strukturen und/oder Mikrospiegeln angeordnet. Alternativ dazu können vor Verfahrensschritt [1.4] diffraktive Strukturen und/oder Mikrospiegel in das zweite Substrat eingebracht werden und wird in Schritt [1.4] die zweite metallische oder optisch variable Beschichtung auf den diffraktiven Strukturen und/oder Mikrospiegeln angeordnet.According to a preferred embodiment, diffractive structures and / or micromirrors are introduced into the first substrate before method step [1.2] and in step [1.2] the first optically variable coating is arranged on the diffractive structures and / or micromirrors. Alternatively, diffractive structures and / or micromirrors can be introduced into the second substrate before method step [1.4] and in step [1.4] the second metallic or optically variable coating is arranged on the diffractive structures and / or micromirrors.
Erfindungsgemäß wird, in einer von zwei Gestaltungen, die erste optisch variable Beschichtung durch eine Farbschicht gebildet, die plättchenförmige metallische Partikel enthält, deren längste Kantenlänge 15 nm bis 1000 nm und deren Dicke 2 nm bis 100 nm beträgt, so dass die Farbschicht in Auflicht einen metallischen, bevorzugt goldenen Farbton und in Durchlicht einen bunten, bevorzugt blauen Farbton zeigt. Bevorzugt weisen die plättchenförmigen metallischen Partikel eine längste Kantenlänge von 15 nm bis 600 nm und besonders bevorzugt 20 nm bis 500 nm auf und eine Dicke von 2 nm bis 40 nm und besonders bevorzugt 4 nm bis 30 nm auf. Eine derartige Farbschicht ist beispielsweise aus der
Als Farbschicht mit einem metallischen Farbton wird im Sinne dieser Erfindung ein 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 color tone is a color layer that has a metallic reflecting surface with a metallic color tone that is preferably golden or gold-colored, silver-colored or silver-colored or bronze-colored.
Als Farbschicht mit einem bunten Farbton wird im Sinne dieser Erfindung ein Farbschicht bezeichnet, die eine ein- oder mehrfarbige Oberfläche aufweist, bevorzugt eine einfarbig blaue, eine einfarbig grüne oder eine einfarbig rote.For the purposes of this invention, a color layer with a colored hue is a color layer which has a single or multi-colored surface, preferably a single-color blue, a single-color green or a single-color red.
Alternativ dazu kann die erste optisch variable Beschichtung auch durch einen mehrschichtigen Aufbau gebildet werden, der mindestens zwei semitransparenten Spiegelschichten und mindestens eine zwischen den mindestens zwei Spiegelschichten angeordnete dielektrische Schicht aufweist, wie er beispielsweise aus der
- Aluminium oder einer Aluminiumlegierung, wobei die dielektrische Abstandsschicht mit einer Dicke h und einem Brechungsindex v die Relation 120 nm < h ·v < 190 nm erfüllt oder
- Silber oder einer Silberlegierung, wobei die dielektrische Abstandsschicht mit einer Dicke h und einem Brechungsindex v die Relation 120 nm < h ·v < 170 nm oder 340 nm < h ·v < 400 nm erfüllt.
- Aluminum or an aluminum alloy, wherein the dielectric spacer layer with a thickness h and a refractive index v meets the relation 120 nm <h · v <190 nm or
- Silver or a silver alloy, wherein the dielectric spacer layer with a thickness h and a refractive index v fulfills the relation 120 nm <h · v <170 nm or 340 nm <h · v <400 nm.
Weitere Ausführungsformen und konkrete Dickenangaben zu den verwendeten Schichten des mehrschichtigen Aufbaus sind aus der
Gemäß einer weiteren bevorzugten Ausführungsform besteht die metallische Beschichtung aus einem Metall, bevorzugt aus Aluminium.According to a further preferred embodiment, the metallic coating consists of a metal, preferably of aluminum.
Besonders vorteilhaft wird somit durch die Erfindung
- 1) eine erste Folie mit einem Gold-Blau-Effekt und mit einem Hologramm oder einem Motiv mit Mikrospiegeln erstellt,
- 2a) eine zweite Trägerfolie mit Colorshift oder/und einer Metallisierung aus Aluminium, jeweils auf diffraktiven Strukturen oder/und Mikrospiegeln mit Motiv, erstellt oder alternativ
- 2b) eine zweite Trägerfolie mit einem Aufsichts-/Durchsichtseffekt und mit einem Hologramm oder einem Motiv mit Mikrospiegeln (z.B. Aufsicht Lila und Durchsicht Grün) erstellt,
- 3) anschließend die erste Folie und die zweite Folie registergenau aufeinander kaschiert und schließlich
- 4) die zweite Trägerfolie von dem derart erzeugten mehrschichtigen Aufbau abgezogen, d.h. der Kaschieraufbau wird trenngewickelt.
- 1) created a first film with a gold-blue effect and with a hologram or a motif with micromirrors,
- 2a) a second carrier film with Colorshift or / and a metallization made of aluminum, in each case on diffractive structures and / or micromirrors with motif, created or alternatively
- 2b) creates a second carrier film with a supervisory / see-through effect and with a hologram or a motif with micromirrors (eg top view purple and see-through green),
- 3) then laminated the first film and the second film onto one another in register and finally
- 4) the second carrier film is removed from the multilayer structure produced in this way, ie the lamination structure is wound separately.
Durch das Kaschieren der ersten Folie mit der zweiten Folie aus 2a) kann ein Gold-Blaueffekt neben einem Colorshift oder/und einer Aluminiummetallisierung jeweils auf diffraktive Strukturen oder/und Mikrospiegeln mit Motiv erhalten werden.By laminating the first film with the second film from FIG. 2a), a gold-blue effect can be obtained in addition to a color shift and / or an aluminum metallization on diffractive structures and / or micromirrors with a motif.
Alternativ kann durch das Kaschieren der ersten Folie mit der zweiten Folie aus 2b) ein Gold-Blaueffekt mit anderen Farben eines Aufsichts-/Durchsichtseffekts mit einem Hologramm oder mit Mikrospiegeln erhalten werden. Beispielsweise zeigt ein Bereich in Aufsicht Gold und in Durchsicht Blau und ein Bereich in Aufsicht Lila und Durchsicht Grün.Alternatively, by laminating the first film with the second film from 2b), a gold-blue effect can be obtained with other colors of a top view / see-through effect with a hologram or with micromirrors. For example, a top view shows gold and see through blue and a top view shows purple and see through green.
Besonders vorteilhaft ergibt sich somit ein Folienverbund, der zwei unterschiedliche metallische Aufsichtsfarben und zwei unterschiedliche Durchsichtsfarben enthält.A film composite that contains two different metallic overlay colors and two different see-through colors thus results particularly advantageously.
Des Weiteren ergibt sich besonders vorteilhaft, dass eine Druckannahmeschicht, die bei der ersten Folie ohnehin aufkaschiert oder gedruckt werden müsste, durch die Kaschierung gleich mit vorhanden ist. Ein Mehraufwand bzw. Mehrkostenaufwand ergibt sich somit lediglich durch die Prägung des UV-Lacks und die Metallisierung.Furthermore, it is particularly advantageous that a printing acceptance layer, which would have to be laminated or printed on the first film anyway, is also present due to the lamination. An additional effort or additional expense is therefore only due to the embossing of the UV varnish and the metallization.
Des Weiteren ergibt sich besonders vorteilhaft, dass ein Folienverbund erzeugt werden kann, der Bereiche mit einem im PVD-Verfahren erhaltenen Gold-Blaueffekt neben Colorshift- bzw. Aluminiumbereichen enthält.Furthermore, it is particularly advantageous that a film composite can be produced which contains areas with a gold-blue effect obtained in the PVD process in addition to color shift or aluminum areas.
Die oben genannte Farbpalette beschränkt sich hierbei bei weitem nicht nur auf Gold/Blau. Andere Farben bzw. Durchsichtsfarben sind z. B. Rosa/Türkis; Silber/Lila; Blau/Gelb; Lila/Grün.The color palette mentioned above is by no means limited to gold / blue. Other colors or see-through colors are e.g. B. pink / turquoise; Silver / Purple; Blue yellow; Purple / green.
Die Erfindung ist des Weiteren nicht nur auf den oben genannten Gold-Blau-Effekt beschränkt, vielmehr können auch andere Farbpaare verwendet werden, da sich die unterschiedlichen Farbeindrücke lediglich durch die Schichtdicke der dielektrischen Schicht ergeben.Furthermore, the invention is not only limited to the gold-blue effect mentioned above, but other color pairs can also be used, since the different color impressions result only from the layer thickness of the dielectric layer.
Gemäß einer bevorzugten Ausführungsform ist die metallische oder 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 metallic or optically variable coating is designed in a pattern and represents visually perceptible information. This can form, for example, a graphic illustration, an image, a number, a letter, a text or other characters. The information particularly preferably consists of positive or negative motifs. With a positive motif, a motif element itself is applied to the substrate, whereas with a negative motif the area surrounding the motif element is applied to the substrate. A positive motif is, for example, a letter printed in dark color on the light substrate. A negative motif is, for example, a surface that is applied to the substrate in dark color and has an unprinted area in the form of a letter within the surface.
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 interference-capable, multilayer structure consists of silicon dioxide (SiO 2 ). Alternatively, a dielectric layer can consist of a transparent printing layer that has a constant thickness. The partially permeable layer of the multi-layer structure capable of interference preferably consists of at least chromium and / or nickel.
Eine Folie, die Bereiche mit einem im PVD-Verfahren erhaltenen Gold-Blaueffekt neben Colorshift- bzw. Aluminiumbereichen enthält, kann durch eine aus dem Stand der Technik bekannte bloße Metallisierung auf einer Folie nicht erzeugt werden, da hierbei zu wenig Steuerspuren vorhanden sind, Haftungsprobleme auftreten und mehrmaliger Waschfarbendruck erforderlich ist.A film which contains areas with a gold-blue effect obtained in the PVD process in addition to color shift or aluminum areas cannot be produced on a film by a mere metallization known from the prior art, since there are too few control marks, liability problems occur and multiple wash color printing is required.
Das transluzente, bevorzugt transparente Substrat, auf das das erfindungsgemäße Sicherheitselement aufgebracht sein kann, besteht besonders bevorzugt aus mindestens einer Kunststofffolie.The translucent, preferably transparent substrate, on which the security element according to the invention can be applied, particularly preferably consists of at least one plastic film.
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, for example, be a UV lacquer, i.e. a varnish that hardens under the influence of ultraviolet light, or a thermoplastic embossing varnish. Diffractive structures, holograms or micromirrors are preferably embossed in this embossing lacquer. 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.Valuable documents in which a security element according to the invention can be used are, in particular, banknotes, shares, bonds, certificates, vouchers, checks, high-quality admission tickets, but also other papers which are at risk of forgery, such as passports and other identification documents, as well as cards, such as credit or debit cards, and also product securing 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.These documents of value particularly preferably have at least one opening, above which the security element according to the invention is arranged. The security element according to the invention is arranged on the surface of the document of value in such a way that it at least partially overlaps the opening or opening of a document of value. The security element according to the invention particularly preferably 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 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 can be used not only in the specified combinations, but also in other combinations, without leaving the scope of the present invention, insofar as this is covered by the scope of protection of the claims.
Claims (12)
- Method for producing a security element for security papers, valuable documents or the like, having the following method steps[1.1] providing a first substrate made from a translucent plastics film,[1.2] applying a first optically variable coating onto the first substrate,[1.3] providing a second substrate made from a plastics film,[1.4] applying a second metallic or optically variable coating onto the second substrate, wherein the second, metallic or optically variable coating differs from the first optically variable coating,[1.5] laminating the first substrate onto the second substrate in accurate register to form a multilayer construction,[1.6] pulling the second substrate off the multilayer construction,wherein the first optically variable coating is formed from a colour layer containing metallic particles in the shape of small plates, the particles having a longest edge length of 15 nm to 1000 nm and a thickness of 2 nm to 100 nm, with the result that the colour layer shows a metallic, preferably golden hue in direct light and a coloured, preferably blue, hue in transmitted light, or
is formed from a multilayer construction comprising at least two semi-transparent reflective layers and at least one dielectric layer arranged between the at least two reflective layers, wherein the optically variable coating exhibits a resonance with a full width at half maximum of 70 nm to 150 nm in a measurement of the transmission of unpolarized light in the blue wavelength range of 420 nm to 490 nm. - Method according to Claim 1, characterized in that diffractive structures and/or micromirrors are introduced into the first substrate before method step [1.2], and, in step [1.2], the first metallic or optically variable coating is arranged on the diffractive structures and/or micromirrors.
- Method according to Claim 1 or 2, characterized in that diffractive structures and/or micromirrors are introduced into the second substrate before method step [1.4], and, in step [1.4], the second metallic or optically variable coating is arranged on the diffractive structures and/or micromirrors.
- Security element, produced according to one of the preceding claims, characterized in that the metallic particles in the shape of small plates have a longest edge length of preferably 15 nm to 600 nm and with particular preference from 20 nm to 500 nm and a thickness of preferably 2 nm to 40 nm and with particular preference from 4 nm to 30 nm.
- Security element, produced according to one of Claims 1 to 3, characterized in that the resonance is the only resonance in the visible range.
- Security element according to Claim 5, characterized in that the at least two semi-transparent reflective 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.
- Security element according to Claim 5, characterized in that the at least two semi-transparent reflective layers are formed from silver or a silver alloy and the dielectric spacer layer having a thickness h and a refractive index v satisfies the relation 120 nm < hv < 170 nm or 340 nm < hv < 400 nm.
- Security element according to one of Claims 4 to 7, characterized in that the metallic or optically variable coating consists of an interference-capable multilayer construction, wherein the interference-capable multilayer construction 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.
- Security element according to one of Claims 4 to 7, characterized in that the metallic or optically variable coating consists of a metal, preferably of aluminium.
- Security element according to one of Claims 4 to 9, characterized in that the metallic or optically variable coating is designed in the form of a pattern and represents a visually perceivable piece of information, for example a graphic depiction, an image, a number, a letter, a text or other characters.
- Security element according to one of Claims 4 to 10, characterized in that at least one of the dielectric layers consists of a transparent printed layer or of a silicon dioxide layer.
- Security element according to one of Claims 4 to 11, characterized in that the partially transmissive layer consists at least of chromium and/or nickel.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016010616.6A DE102016010616A1 (en) | 2016-09-01 | 2016-09-01 | Security element with several security features |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3290225A1 EP3290225A1 (en) | 2018-03-07 |
| EP3290225B1 true EP3290225B1 (en) | 2020-01-29 |
Family
ID=59579372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17001359.3A Active EP3290225B1 (en) | 2016-09-01 | 2017-08-08 | Security element with a plurality of security features |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP3290225B1 (en) |
| DE (1) | DE102016010616A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019003947A1 (en) * | 2019-06-06 | 2020-12-10 | Giesecke+Devrient Currency Technology Gmbh | Method for producing an optically variable security element |
| DE102020007728A1 (en) | 2020-12-17 | 2022-06-23 | Giesecke+Devrient Currency Technology Gmbh | Data carrier with composite substrate with a security element arranged in a see-through area |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| AU2010323218B2 (en) | 2009-11-27 | 2014-07-31 | Basf Se | Coating compositions for security elements and holograms |
| DE102009058243A1 (en) | 2009-12-14 | 2011-06-16 | Giesecke & Devrient Gmbh | Thin-film element with multilayer structure |
| SI2578414T1 (en) * | 2011-10-04 | 2014-08-29 | Hueck Folien Gesellschaft M.B.H. | Security element with colour-switching effect, use of same and method for producing same |
| RU2621558C9 (en) * | 2012-08-17 | 2017-12-05 | Визуал Физикс, Ллс | Process of transfering microstructures on final substrate |
-
2016
- 2016-09-01 DE DE102016010616.6A patent/DE102016010616A1/en not_active Withdrawn
-
2017
- 2017-08-08 EP EP17001359.3A patent/EP3290225B1/en active Active
Non-Patent Citations (1)
| Title |
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| None * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3290225A1 (en) | 2018-03-07 |
| DE102016010616A1 (en) | 2018-03-01 |
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