Security element
A security element with a structured depth of 500 nm to 4 μm and specific optical layers addresses unwanted coupling issues, enhancing forgery prevention by maintaining color shift visibility and security.
Patent Information
- Application Number
- JP2025501551
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2022-07-15
- Filing Date
- 2023-07-12
- Publication Date
- 2025-07-25
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Security elements with color shift optical effects face unwanted coupling between structure and optical effect layer, leading to attenuation and decreased perceptibility, compromising forgery prevention ability.
The security element incorporates a structure with a depth greater than 500 nm, specifically between 500 nm and 4 μm, and includes a light diffraction structure, an embossed structure in an embossed lacquer layer, with an optical effect layer comprising absorption and spacer layers, and optionally reflective layers, using specific metal and dielectric materials.
Enhances forgery prevention by maintaining the color shift effect's perceptibility and integrity, ensuring robust security against counterfeiting.
Smart Images

Figure 2025523844000001_ABST
Abstract
Description
Technical Field
[0001] The present invention specifically relates to a security element for securities paper such as banknotes, identity documents, credit cards, security paper, or security articles, the security element having at least one region with a structure, and at least one color shift optical effect layer that causes a color shift effect being provided within at least one first region when viewed from a first side of the security element, and the structure being covered in whole or in part by at least one color shift optical effect layer.
Background Art
[0002] Security elements of the above-described type are typically used to enhance the forgery prevention ability of securities paper such as banknotes, identity documents, credit cards, cash cards, tickets, etc., or security paper.
[0003] In the security element of the type described at the beginning, there is a risk of an unwanted coupling effect occurring between the structure and the color shift optical effect layer. Specifically, the effect brought about by the structure may overlap with the color shift effect (Farbkippeffekt) of the optical effect layer and may integrate with such a color shift effect, which may lead to unwanted unexpected obstacles such as attenuation of the color of the optical effect layer and a decrease in the perceptibility of the color shift effect to the observer. Such obstacles are particularly inconvenient in view of the forgery prevention ability of the security element.
Summary of the Invention
Problems to be Solved by the Invention
[0004] Accordingly, an object of the present invention is to provide a security element that overcomes the above-mentioned drawbacks and has enhanced forgery prevention ability.
Means for Solving the Problems
[0005] According to the present invention, the above problem is solved by a security element in the form described at the beginning, wherein the depth of the structure is greater than 500 nm, specifically between 500 nm and 4 μm. The depth of the structure, in this context, means the vertical distance between the level of the deepest point of the structure and the level of the highest point. [Advantages of the Invention]
[0006] According to an advantageous modification of the invention, the structure is a light diffraction structure.
[0007] It has been found to be particularly advantageous if the structure is an embossed structure, specifically an embossed structure in an embossed lacquer layer.
[0008] According to a further advantageous configuration of the invention, the optical effect layer is formed as a thin layer element and has at least one absorption layer and at least one spacer layer.
[0009] It has been found to be particularly advantageous if at least one absorption layer contains at least one metal material selected from the group of nickel, titanium, vanadium, chromium, cobalt, palladium, iron, tungsten, molybdenum, niobium, aluminum, silver, copper, and / or alloys of the materials, or is manufactured from at least one of the materials.
[0010] At least one spacer layer (7) is specifically aluminum oxide (Al2O3), a metal fluoride such as magnesium fluoride (MgF2), aluminum fluoride (AlF3), cerium fluoride (CeF3), sodium aluminum fluoride (e.g., Na3AlF6 or Na5Al3F 14 ), silicon oxide (SIO x) A low refractive index dielectric material having a refractive index of 1.65 or less, selected from the group consisting of silicon dioxide (SiO2), neodymium fluoride (NdF3), lanthanum fluoride (LaF3), samarium fluoride (SmF3), barium fluoride (BaF2), calcium fluoride (CaF2), lithium fluoride (LiF), a low refractive index organic monomer and / or a low refractive index organic polymer, or specifically zinc sulfide (ZnS), zinc oxide (ZnO), titanium dioxide (TiO2), carbon (C), indium oxide (In2O3), indium tin oxide (ITO), tantalum pentoxide (Ta2O5), cerium oxide (CeO2), yttrium oxide (Y2O3), europium oxide (Eu2O3), iron oxide, such as iron(II,III) oxide (Fe3O4) and iron(III) oxide (Fe2O3), hafnium nitride (HfN), hafnium carbide (HfC), hafnium oxide (HfO2), lanthanum oxide (La2O3), magnesium oxide (MgO), neodymium oxide (Nd2O3), praseodymium oxide (Pr6O 11 ) It has been further found that it is particularly advantageous to include at least one high refractive index dielectric material having a refractive index greater than 1.65, selected from the group consisting of samarium oxide (Sm2O3), antimony trioxide (Sb2O3), silicon carbide (SiC), silicon nitride (Si3N4), silicon monoxide (SiO), selenium trioxide (Se2O3), tin oxide (SnO2), tungsten trioxide (WO3), a high refractive index organic monomer and / or a high refractive index organic polymer, or to be manufactured from at least one of the materials.
[0011] In an advantageous embodiment, the optical effect layer formed as a thin layer element further comprises at least one reflective layer and / or a second absorption layer, and at least one spacer layer is arranged between at least one first absorption layer and at least one reflective layer and / or at least one second absorption layer.
[0012] At least one reflective layer is specifically selected from the group of at least one metallic material selected from silver, copper, aluminum, gold, platinum, niobium, tin, or nickel, titanium, vanadium, chromium, cobalt, and palladium, or an alloy of materials, specifically a cobalt-nickel alloy, or specifically zinc sulfide (ZnS), zinc oxide (ZnO), titanium dioxide (TiO2), carbon (C), indium oxide (In2O3), indium tin oxide (ITO), tantalum pentoxide (Ta2O5), cerium oxide (CeO2), yttrium oxide (Y2O3), europium oxide (Eu2O3), iron oxide, such as iron(II,III) oxide (Fe3O4) and iron(III) oxide (Fe2O3), hafnium nitride (HfN), hafnium carbide (HfC), hafnium oxide (HfO2), lanthanum oxide (La2O3), magnesium oxide (MgO), neodymium oxide (Nd2O3), praseodymium oxide (Pr6O 11 )), samarium oxide (Sm2O3), antimony trioxide (Sb2O3), silicon carbide (SiC), silicon nitride (Si3N4), silicon monoxide (SiO), selenium trioxide (Se2O3), tin oxide (SnO2), tungsten trioxide (WO3), at least one high refractive index dielectric material having a refractive index greater than 1.65, selected from the group of high refractive index organic monomers and / or high refractive index organic polymers, or being manufactured from at least one of the materials is advantageous.
[0013] Furthermore, the security element includes a support layer made of plastic, specifically the plastic is formed from a light-transmissive and / or thermoplastic plastic, and the support layer is preferably made of polyimide (PI), polypropylene (PP), uniaxially stretched polypropylene (MOPP), biaxially stretched polypropylene (BOPP), polyethylene (PE), polyphenylene sulfide (PPS), polyether ether ketone (PEEK), polyether ketone (PEK), polyethylene imide (PEI), polysulfone (PSU), polyaryl ether ketone (PAEK), polyethylene naphthalate (PEN), liquid crystal polymer (LCP), polyester, polybutylene terephthalate (PBT), polyethylene terephthalate (PET), polyamide (PA), polycarbonate (PC), cycloolefin copolymer (COC), polyoxymethylene (POM), acrylonitrile-butadiene-styrene (ABS), polyvinyl chloride (PVC), ethylene tetrafluoroethylene (ETFE), polytetrafluoroethylene (PTFE), polyvinyl fluoride (PVF), polyvinylidene fluoride (PVDF), ethylene-tetrafluoroethylene-hexafluoropropylene-fluoroterpene polymer (EFEP), cellulose or lignin-based plastic, polyhydroxyalkanoate (PHA), thermoplastic starch (TPS), polylactic acid (PLA), polycaprolactone (PCL), polybutylene succinate (PBS), and polybutylene adipate-terephthalate (PBAT), and / or at least one recycled plastic, and / or biodegradable and / or ocean-degradable plastic, and / or at least one material selected from the group of material mixtures and / or copolymers, or may be manufactured from at least one of the materials.
[0014] Furthermore, the security element comprises a further color shift layer, specifically a layer having a color shift pigment or liquid crystal, and / or a layer having a machine-readable feature, and the machine-readable feature is specifically a magnetic code, a conductive layer, an electromagnetic wave absorbing material and / or an electromagnetic wave re-radiating material. Specifically, it may be advantageous for the security element to have an additional layer, and the additional layer specifically includes a protective lacquer, a heat-sealing lacquer, glue, a primer, and / or a foil.
[0015] For a better understanding of the present invention, the present invention will be described in detail based on the following drawings.
[0016] The drawings are each highly simplified schematic views.
Brief Description of the Drawings
[0017]
Figure 1
Embodiments for Carrying Out the Invention
[0018] As shown in Fig. 1, the security element 1 according to the present invention, such as for preventing forgery of securities paper, security paper, or security articles such as banknotes, identity certificates, credit cards, tickets, etc., has a region 2 in which a structure 3 is arranged. The region 2 can extend over a part of the security element 1, but can also extend over the entire security element 1. A structure 3 is formed within the region 2. It is advantageous if the structure 3 is an optical diffraction structure or a diffraction structure. The structure 3 can generate, for example, a hologram, and the depth T of the structure is greater than 500 nm, specifically between 500 nm and 4 μm. The depth T of the structure 3 means, in this context, the vertical distance between the level of the deepest point of the structure 3 and the level of the highest point. The width B of the structure 3 here corresponds to the minimum width of the depth of the structure 3. It is more advantageous if the aspect ratio of the structure 3 is from 0.05 to 8. The aspect ratio means, for a structure having a right-angled inclination angle, such as a columnar structure, the ratio of the depth T to the width B of the structure 3. For a structure having an inclination angle deviating from 90°, such as a serrated structure, the aspect ratio is the ratio of the depth T of the structure to the distance between the vertices.
[0019] An optical effect layer 4 is wholly or partly adhered onto the structure 3. For example, there may be a region 5 where the effect layer 4 is omitted. The optical effect layer 4 may be arranged directly on the structure 3. However, an additional adhesive layer may also be arranged between the structure 3 and the optical effect layer 4. The material of the adhesive layer may be selected from, for example, nickel, titanium, manganese, vanadium, chromium, cobalt, palladium, iron, tungsten, molybdenum, niobium, aluminum, silver, copper, and / or alloys of the materials, specifically from the group of at least one nickel-chromium alloy, and contains at least one of the materials or is manufactured from at least one of the materials. It is particularly advantageous if the material of the adhesive layer is chromium or a nickel-chromium alloy, such as Inconel.
[0020] It is advantageous that the optical effect layer 4 is formed as a thin layer element. The optical effect layer 4 formed as a thin layer element has at least one absorption layer 6 and at least one spacer layer 7.
[0021] The absorption layer 6 specifically contains a metal material selected from the group of nickel, titanium, vanadium, chromium, cobalt, palladium, iron, tungsten, molybdenum, niobium, aluminum, silver, copper, and / or alloys of the materials, or may be manufactured from at least one of the materials.
[0022] At least one spacer layer 7 may be formed, for example, from a dielectric material. Further, at least one spacer layer 7 specifically includes aluminum oxide (Al2O3), metal fluorides such as magnesium fluoride (MgF2), aluminum fluoride (AlF3), cerium fluoride (CeF3), sodium aluminum fluoride (e.g., Na3AlF6 or Na5Al3F 14 )), silicon oxide (SIO x ), silicon dioxide (SiO2), neodymium fluoride (NdF3), lanthanum fluoride (LaF3), samarium fluoride (SmF3), barium fluoride (BaF2), calcium fluoride (CaF2), lithium fluoride (LiF), low refractive index organic monomers and / or low refractive index organic polymers, a low refractive index dielectric material having a refractive index of 1.65 or less, or specifically zinc sulfide (ZnS), zinc oxide (ZnO), titanium dioxide (TiO2), carbon (C), indium oxide (In2O3), indium tin oxide (ITO), tantalum pentoxide (Ta2O5), cerium oxide (CeO2), yttrium oxide (Y2O3), europium oxide (Eu2O3), iron oxide such as iron oxide (II, III) (Fe3O4) and iron oxide (III) (Fe2O3), hafnium nitride (HfN), hafnium carbide (HfC), hafnium oxide (HfO2), lanthanum oxide (La2O3), magnesium oxide (MgO), neodymium oxide (Nd2O3), praseodymium oxide (Pr6O 11) It may contain at least one high refractive index dielectric material selected from the group of samarium oxide (Sm2O3), antimony trioxide (Sb2O3), silicon carbide (SiC), silicon nitride (Si3N4), silicon monoxide (SiO), selenium trioxide (Se2O3), tin oxide (SnO2), tungsten trioxide (WO3), high refractive index organic monomers and / or high refractive index organic polymers, and having a refractive index greater than 1.65, or may be manufactured from at least one of the materials.
[0023] The optical effect layer 4 formed as a thin layer element may be directly on the structure 3 or may be deposited on the above-mentioned adhesive layer disposed, for example, on the structure 3.
[0024] The total thickness of the individual layers or layers forming the thin layer element is highly exaggerated and not proportional to the original size.
[0025] The color shift optical effect layer 4 may further comprise at least one reflective layer 8. At least one spacer layer 7 is disposed between the absorption layer 6 and the reflective layer 8. The reflective layer 8 is deposited on the structure 3, specifically may be printed and / or vapor deposited on the structure. Similarly, such an order in the optical effect layer may be reversed so that the absorption layer is disposed on the adhesive layer 5, and further a spacer layer and a reflective layer are disposed. Therefore, the arrangement relationship corresponds to the order of the structure 3 - absorption layer 6 - spacer layer 7 - reflective layer 8.
[0026] Specifically, the reflective layer 8 is selected from at least one metallic material selected from the group consisting of silver, copper, aluminum, gold, platinum, niobium, tin, nickel, titanium, vanadium, chromium, cobalt, and palladium, or an alloy of materials, specifically a cobalt-nickel alloy, or specifically, zinc sulfide (ZnS), zinc oxide (ZnO), titanium dioxide (TiO2), carbon (C), indium oxide (In2O3), indium tin oxide (ITO), tantalum pentoxide (Ta2O5), cerium oxide (CeO2), yttrium oxide (Y2O3), europium oxide (Eu2O3), iron oxide, such as iron oxide (II, III) (Fe3O4) and iron oxide (III) (Fe2O3), hafnium nitride (HfN), hafnium carbide (HfC), hafnium oxide (HfO2), lanthanum oxide (La2O3), magnesium oxide (MgO), neodymium oxide (Nd2O3), praseodymium oxide (Pr6O 11 )), samarium oxide (Sm2O3), antimony trioxide (Sb2O3), silicon carbide (SiC), silicon nitride (Si3N4), silicon monoxide (SiO), selenium trioxide (Se2O3), tin oxide (SnO2), tungsten trioxide (WO3), and at least one high refractive index dielectric material having a refractive index greater than 1.65, selected from the group consisting of high refractive index organic monomers and / or high refractive index organic polymers, or may be manufactured from at least one of the materials. This applies to all reflective layers 8 described in the examples.
[0027] However, instead of the reflective layer 8 described above, an additional absorption layer may be provided.
[0028] The security element 1 can further include a support layer 9. The support layer 9 may be formed from plastic. Further, a plurality of layers can also form the support layer 9. The plastic may be formed from a light-transmissive and / or thermoplastic plastic. As materials for the support layer 9, polyimide (PI), polypropylene (PP), uniaxially stretched polypropylene (MOPP), biaxially stretched polypropylene (BOPP), polyethylene (PE), polyphenylene sulfide (PPS), polyether ether ketone (PEEK), polyether ketone (PEK), polyethylene imide (PEI), polysulfone (PSU), polyaryl ether ketone (PAEK), polyethylene naphthalate (PEN), liquid crystal polymer (LCP), polyester, polybutylene terephthalate (PBT), polyethylene terephthalate (PET), polyamide (PA), polycarbonate (PC), cycloolefin copolymer (COC), polyoxymethylene (POM), acrylonitrile butadiene styrene (ABS), polyvinyl chloride (PVC), ethylene tetrafluoroethylene (ETFE), polytetrafluoroethylene (PTFE), polyvinyl fluoride (PVF), polyvinylidene fluoride (PVDF), ethylene-tetrafluoroethylene-hexafluoropropylene-fluoroterpene polymer (EFEP), plastics based on cellulose or lignin, polyhydroxyalkanoate (PHA), thermoplastic starch (TPS), polylactic acid (PLA), polycaprolactone (PCL), polybutylene succinate (PBS), and polybutylene adipate-terephthalate (PBAT), and / or at least one recycled plastic, and / or biodegradable and / or ocean-degradable plastics, and / or at least one of a material consisting of a mixture and / or copolymer of these materials, or may be manufactured from at least one of these materials. The thickness of the support layer may be from 5 μm to 1000 μm, and a particularly preferred thickness may be from 10 μm to 50 μm.
[0029] The optical effect layer 4 or the structure 3 of its layers can be arranged or applied onto, for example, by a printing process and / or an evaporation process, or by a plurality of printing processes and / or evaporation processes.
[0030] The structure 3 can be embossed directly into the support layer 9, for example, by heating the support layer 9 and embossing the structure with an embossing tool, such as an embossing roller.
[0031] A further alternative possibility is to provide a further specific layer 10 for receiving the structure 3. The further layer 10 can be applied directly onto the support layer 9. The further layer 10 can be applied directly onto the support layer 9. For example, the further layer 10 can be formed by an embossed lacquer. The embossed lacquer is deformed corresponding to the arrangement of the structure 3. This can be done by an embossing method using a forming device or a forming element. The thickness of such a further layer in which the structure 3 is formed, specifically an embossed lacquer layer, can be, for example, from 0.5 μm to 300 μm, specifically from 0.8 μm to 50 μm, and preferably from 1 μm to 10 μm.
[0032] Furthermore, at least one intermediate layer can be provided between the layer 10 and the support layer 9. The intermediate layer can be formed, for example, by an adhesive, a primer, glue, or the like.
[0033] As the topmost or outermost layer on the optical effect layer 4, a protective layer (not shown here, for example) can be provided. The protective layer can protect the entire layer structure and / or layer structure from mechanical damage, such as scratches, grooving, or the like. The protective layer can also be arranged on the side of the support layer 9 opposite to the optical effect layer. Arranging it on both sides is also conceivable. It is advantageous because the security element 1 can also be configured flat by the protective layer.
[0034] Needless to say, the layer structure and the arrangement relationship of further layers depend on the form of attaching the security element onto the security article. This is because here, the side where the security element should be seen after attachment is extremely important. Therefore, the visual side as shown in the figure can be viewed from above, but it is also possible to view the security element from the lower visual side, for example, through the support.
[0035] Just to mention for the sake of caution here, the expression "a layer is attached to something" should be understood such that the layer may be directly attached, or there may still be one or more intermediate layers between the attached layer and the thing to which the layer is attached. Just to mention for the sake of caution here, one or more intermediate layers may be arranged between the layers described in this specification. Therefore, it is not necessarily required that the described layers are in contact with each other. Furthermore, the concept of "layer" in this specification should be understood such that one layer may be composed of a plurality of sub-layers.
Explanation of Reference Numerals
[0036] 1 Security element 2 Region 3 Structure 4 Effect layer 5 Layer 6 Absorbing layer 7 Spacer layer 8 Reflective layer 9 Support layer 10 Adhesive layer
Claims
1. A security element (1) for banknotes, identity documents, security papers such as credit cards, security paper, or security articles, comprising: The security element (1) has at least one region (2) with a structure (3), At least one color shift optical effect layer (4) that causes a color shift effect is provided in at least one of the first regions (2) as seen from the first side of the security element, and the structure (3) is in a form that is entirely or partially covered by at least one of the optical effect layers (4), The security element is characterized in that the depth (T) of the structure (3) is greater than 500 nm, specifically between 500 nm and 4 μm.
2. The security element according to claim 1, characterized in that the structure (3) is a light diffraction structure.
3. The security element according to claim 1 or claim 2, characterized in that the structure (3) is an embossed structure, specifically an embossed structure in an embossed lacquer layer.
4. The security element according to any one of claims 1 to 3, characterized in that the optical effect layer (4) is formed as a thin layer element and has at least one absorption layer (6) and at least one spacer layer (7).
5. At least one of the absorption layers (6) specifically contains at least one metal material selected from the group consisting of nickel, titanium, vanadium, chromium, cobalt, palladium, iron, tungsten, molybdenum, niobium, aluminum, silver, copper, and / or alloys of these substances, or is made from at least one of these substances. The security element according to claim 4.
6. At least one of the spacer layers (7) is specifically aluminum oxide (Al 2 O 3 ), metal fluoride, such as magnesium fluoride (MgF 2 ), aluminum fluoride (AlF 3 ), cerium fluoride (CeF 3 ), sodium aluminum fluoride (e.g., Na 3 AlF 6 or Na 5 Al 3 F 14 ), silicon oxide (SiO x ), silicon dioxide (SiO 2 ), neodymium fluoride (NdF 3 ), lanthanum fluoride (LaF 3 ), samarium fluoride (SmF 3 ), barium fluoride (BaF 2 ), calcium fluoride (CaF 2 ), lithium fluoride (LiF), a low refractive index organic monomer, and / or a low refractive index organic polymer selected from the group of low refractive index dielectric materials having a refractive index of 1.65 or less, or specifically zinc sulfide (ZnS), zinc oxide (ZnO), titanium dioxide (TiO 2 ), carbon (C), indium oxide (In 2 O 3 ), indium tin oxide (ITO), tantalum pentoxide (Ta 2 O 5 ), cerium oxide (CeO 2 ), yttrium oxide (Y 2 O 3 ), europium oxide (Eu 2 O 3 ), iron oxide, such as iron (II, III) oxide (Fe 3 O 4 ) and iron (III) oxide (Fe 2 O 3 ), hafnium nitride (HfN), hafnium carbide (HfC), hafnium oxide (HfO 2 ), lanthanum oxide (La 2 O 3 ), magnesium oxide (MgO), neodymium oxide (Nd 2 O 3 ), praseodymium oxide (Pr 6 O 11 ), samarium oxide (Sm 2 O 3 ), antimony trioxide (Sb 2 O 3 ), silicon carbide (SiC), silicon nitride (Si 3 N 4 ), silicon monoxide (SiO), selenium trioxide (Se 2 O 3 ), tin oxide (SnO 2 ), tungsten trioxide (WO 3 ), a high refractive index organic monomer, and / or at least one high refractive index dielectric material selected from the group of high refractive index organic polymers, having a refractive index greater than 1.65, or being manufactured from at least one of these substances, characterized in that it is the security element according to claim 4 or claim 5.
7. The optical effect layer (4) formed as a thin layer element further includes at least one reflection layer (8) and / or a second absorption layer, and at least one of the spacer layers (7) is disposed between at least one of the first absorption layers (6) and at least one of the reflection layers (8) and / or at least one of the second absorption layers. The security element according to any one of claims 4 to 6.
8. At least one of the said reflective layers (8) is specifically selected from the group of at least one metal material selected from silver, copper, aluminum, gold, platinum, niobium, tin or nickel, titanium, vanadium, chromium, cobalt and palladium, or an alloy of these substances, specifically a cobalt-nickel alloy, or specifically zinc sulfide (ZnS), zinc oxide (ZnO), titanium dioxide (TiO 2 ), carbon (C), indium oxide (In 2 O 3 ), indium tin oxide (ITO), tantalum pentoxide (Ta 2 O 5 ), cerium oxide (CeO 2 ), yttrium oxide (Y 2 O 3 ), europium oxide (Eu 2 O 3 ), iron oxide, for example iron oxide (II, III) (Fe 3 O 4 ), and iron oxide (III) (Fe 2 O 3 ), hafnium nitride (HfN), hafnium carbide (HfC), hafnium oxide (HfO 2 ), lanthanum oxide (La 2 O 3 ), magnesium oxide (MgO), neodymium oxide (Nd 2 O 3 ), praseodymium oxide (Pr 6 O 11 ), samarium oxide (Sm 2 O 3 ), antimony trioxide (Sb 2 O 3 ), silicon carbide (SiC), silicon nitride (Si 3 N 4 ), silicon monoxide (SiO), selenium trioxide (Se 2 O 3 ), tin oxide (SnO 2 ), tungsten trioxide (WO 3 ), at least one high refractive index dielectric material having a refractive index greater than 1.65, selected from the group of high refractive index organic monomers and / or high refractive index organic polymers, or being manufactured from at least one of these substances, the security element according to claim 7, characterized in that it comprises or is made of at least one of these substances.
9. The security element includes a support layer (9) made of plastic, specifically, the plastic is formed from a light-transmissive and / or thermoplastic plastic, and the support layer preferably comprises polyimide (PI), polypropylene (PP), uniaxially stretched polypropylene (MOPP), biaxially stretched polypropylene (BOPP), polyethylene (PE), polyphenylene sulfide (PPS), polyether ether ketone (PEEK), polyether ketone (PEK), polyethylene imide (PEI), polysulfone (PSU), polyaryl ether ketone (PAEK), polyethylene naphthalate (PEN), liquid crystal polymer (LCP), polyester, polybutylene terephthalate (PBT), polyethylene terephthalate (PET), polyamide (PA), polycarbonate (PC), cycloolefin copolymer (COC), polyoxymethylene (POM), acrylonitrile-butadiene-styrene (ABS), polyvinyl chloride (PVC), ethylene tetrafluoroethylene (ETFE), polytetrafluoroethylene (PTFE), polyvinyl fluoride (PVF), polyvinylidene fluoride (PVDF), ethylene-tetrafluoroethylene-hexafluoropropylene-fluoroterpene polymer (EFEP), plastic based on cellulose or lignin, polyhydroxyalkanoate (PHA), thermoplastic starch (TPS), polylactic acid (PLA), polycaprolactone (PCL), polybutylene succinate (PBS), and polybutylene adipate-terephthalate (PBAT), and / or at least one recycled plastic, and / or biodegradable and / or marine degradable plastic, and / or at least one material selected from the group consisting of mixtures and / or copolymers of these substances, or is manufactured from at least one of these substances, and is characterized in that it is the security element according to any one of claims 1 to 8.
Citation Information
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