EP4054853A1 - Sicherheitsdokument mit oberflächenbeschichtung auf basis von nanomaterialien - Google Patents
Sicherheitsdokument mit oberflächenbeschichtung auf basis von nanomaterialienInfo
- Publication number
- EP4054853A1 EP4054853A1 EP20801194.0A EP20801194A EP4054853A1 EP 4054853 A1 EP4054853 A1 EP 4054853A1 EP 20801194 A EP20801194 A EP 20801194A EP 4054853 A1 EP4054853 A1 EP 4054853A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- surface coating
- security document
- coating
- substrate layer
- image
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052709 silver Inorganic materials 0.000 claims description 5
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- GKMPTXZNGKKTDU-UHFFFAOYSA-L cadmium(2+);tellurite Chemical compound [Cd+2].[O-][Te]([O-])=O GKMPTXZNGKKTDU-UHFFFAOYSA-L 0.000 description 1
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- 239000003292 glue Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/309—Photographs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
Definitions
- the present invention relates to a security document with a surface coating based on nanomaterials or a Nanotec coating on a security document, in particular a card, and a method for producing such a security document.
- a layer of varnish is applied as scratch protection to security documents, such as identity cards and cards in passports or driving licenses.
- the invention is based on the idea of providing card-shaped identity documents with a surface coating based on nanotechnology in order to make manipulation of the documents more difficult and, if possible, to prevent it.
- a surface functional layer are applied to the document nanotechnology basis.
- a non-stick coating prevents over-glued or over-laminated false photos from sticking.
- a diffusion coating prevents glue from penetrating the card surface and thus prevents a good connection and the false image comes off.
- a scratch protection coating similar to the current paintwork, only significantly thinner, prevents scratching or abrasion of the surface. A beading effect can be used by the police to check the authenticity of the document. The water does not roll off on pasted-over pictures.
- a nanomaterial is a material whose individual units are between 1 and 1000 nanometers in size. Usually substances in the range from 1 nm to 100 nm are regarded as nanomaterials.
- Nanomaterials for surface coatings of security documents can be used to specifically change or influence certain material properties of the surface of the documents.
- a wide variety of materials are applied to the particle surface of a core in complete or incomplete, one or more layers as a particle shell.
- it is mainly the outer particle shell that determines the properties and less the core.
- the comparatively large ratio of surface area to volume based on the total surface area of the system, leads to changed surface properties compared to larger particles.
- the surface coatings of security documents described here can contain synthetic nanoparticles.
- Synthetic nanoparticles are artificially produced particles that are specifically equipped with new properties and / or functionalities, such as. B. electrical conductivity, chemical reactivity.
- Synthetic nanoparticles can be subdivided according to their chemical and physical properties. Common groups are: carbon-containing nanoparticles; Metal oxides (Silicon dioxide (S1O2), titanium dioxide (T1O2), aluminum oxide (AI2O3), iron oxide (Fe2O3) or (Fe 3 0 4 ), zinc oxide (ZnO); semiconductors (cadmium tellurite (CdTe), silicon); metals (gold (Au ), Silver (Ag), iron (Fe).
- Carbon-containing nanoparticles can be in the form of fullurenes, nanotubes and soot particles.
- the surface coatings for security documents can be produced in various ways. Nanomaterials in the various coating systems have a different mass fraction depending on their function. If nanomaterials are added to a paint as an additive to improve wear resistance, for example, their proportion by mass is around 3-7 percent.
- the nanotechnologically functionalized coatings described here can contain various additives, e.g. the following substances that can be specifically added as nanomaterials: titanium dioxide, silicon dioxide, carbon black, iron oxide, zinc oxide and silver.
- nanoparticles can be present in a distribution of different particle sizes over at least one order of magnitude.
- the particle size can range from a few tens of nanometers to a few thousand nanometers before further processing.
- Binders which can also be dispersed in water with the help of stabilizers, can form fine particles with a diameter of 50 to about 500 nanometers, which can fuse when the coating dries.
- the production of particles with a narrow particle size distribution can take place.
- nanomaterials By using nanomaterials, a better degree of coverage, a better interaction between coating and surface and a more durable coating of the surface of security documents can be achieved. Due to the small particle sizes of 100 nm and less of some nanomaterials, eg T1O2, these are particularly suitable for use in transparent coating systems, ie as a transparent surface layer of the security document, especially in the area of the photo. Security documents with surface coatings that contain nanomaterials show a significantly better profile of properties and processing than conventional coatings, e.g. increased penetration hardness, high elasticity, fast drying, no swelling when exposed to water and high water vapor permeability.
- Such security documents based on nanoparticle coatings can be efficiently produced with the help of suitable synthesis processes.
- a sol i.e. a viscous colloidal dispersion
- the layers that are created are between 0.5 and 3 ⁇ m thick, and in extreme cases can also be only a few nanometers thin and transparent.
- the coating can be baked into the surface of the document at high temperatures, which can increase the durability of the coating.
- Security documents based on nanoparticle coatings can also be produced with photocatalytic coatings.
- photocatalytic coatings with nanoscale T1O2 can be applied to the surface by chemical vapor deposition (CVD).
- CVD chemical vapor deposition
- This method is suitable for plastic surfaces, e.g. surfaces made of polycarbonate of the security cards of ID documents.
- the choice of the manufacturing process is based on the area of application and the requirements of the coating.
- the use of the sol-gel process can be more favorable for the production of surface coatings with nanoparticles of security documents due to lower temperatures during the manufacturing process, shorter process management and lower energy consumption.
- the invention relates to a security document comprising: a substrate layer with an image area in which an image of an owner of the Security document is applied, and a personalization area in which personal data of the owner of the security document are applied; and a surface coating on at least the image area of the substrate layer, wherein the surface coating is based on nanomaterials, and wherein the surface coating is resistant to application of one or more further layers to at least the image area of the substrate layer coated with the surface coating.
- Such a security document with a surface coating based on nanotechnology makes it difficult or prevents manipulation of the document.
- the application of new photos over the original photo of the document owner and the covering with a new layer of plastic, for example a new layer of lacquer or a new lamination is prevented or at least made more difficult due to the material properties of the surface coating, i.e. the properties of the nanomaterials.
- the surface coating is resistant to the application of another image to the image area of the substrate layer coated with the surface coating.
- the resistance of the surface coating to the application of one or more further layers is formed in such a way that the one or more further layers applied detach from the surface coating.
- the surface coating comprises one or more surface functional layers which give the security document one or more functions based on the nanomaterials.
- the surface coating comprises a non-stick coating, the non-stick coating preventing one or more further layers, in particular with a different image, from sticking or sticking over or printing onto the substrate layer coated with the surface coating.
- the surface coating comprises a diffusion coating, the diffusion coating preventing the penetration of adhesive into a surface of the substrate layer coated with the surface coating.
- the surface coating comprises a scratch protection coating which prevents scratching or abrasion of the surface coating.
- the surface coating based on nanomaterials has a higher scratch resistance than a conventional laminate coating or lacquer coating.
- the thickness of the surface coating ranges from the single-digit nanometer range to the single-digit micrometer range.
- the thickness of the surface coating is much thinner than the thickness of a conventional lacquer layer or lamination.
- a better degree of coverage a better interaction between coating and surface and a more durable coating of the surface of security documents can be achieved.
- Due to the small particle sizes from the single-digit nanometer range to the single-digit micrometer range these are particularly suitable for use in transparent Coating systems, ie as a transparent surface layer of the security document, especially in the area of the photo.
- Security documents with surface coatings of such a thickness show a significantly better profile of properties and processing than conventional coatings, for example an increase in the penetration hardness, high elasticity, quick drying, no swelling when exposed to water and high water vapor permeability.
- the coating can be baked into the surface of the document at high temperatures, which can increase the durability of the coating.
- such surface coatings have an anti-reflective behavior over a very wide spectral range.
- the surface coating is hydrophobic or superhydrophobic, and the surface coating is designed to cause the water to roll off with the formation of a specific drop shape when wetted with water.
- the specific drop shape forms a contact angle to the surface of the surface coating of greater than 90 degrees, in particular a contact angle in the range from 120 degrees to 170 degrees.
- the specific drop shape forms a contact surface with the surface of the surface coating which is smaller than 10 percent of the drop surface, in particular in the range from 2 to 3 percent or in the range from 0.5 percent to 1 percent of the drop surface.
- the surface coating comprises one or more of the following nano-materials: carbon-containing nanoparticles, semiconductors, metals, metal sulfides, polymers, metal and semimetal oxides, in particular titanium dioxide, silicon dioxide, iron oxide, zinc oxide, aluminum oxide, silver.
- the substrate layer is based on a thermoplastic, in particular polycarbonate.
- card-shaped identification documents made of thermoplastic material, in particular Polycarbonate, can be efficiently coated with the surface coating.
- Identity cards passport cards with picture information and personal information, driver's licenses, electronic residence permits (EATs), ID cards from companies, for example, and other card-shaped ID cards are particularly suitable for being treated with such a surface coating in order to ensure their security against forgery increase.
- EATs electronic residence permits
- the surface coating is materially connected to the substrate layer.
- the nanomaterials have nanoparticles with particle sizes between 2 and 60 nanometers, preferably between 5 and 50 nanometers.
- the coating can be baked into the surface of the document at high temperatures, thereby reducing the Coating resistance can be increased. Furthermore, such surface coatings have an anti-reflective behavior over a very wide spectral range.
- the surface coating is transparent in the optical wavelength range.
- the invention relates to a method for producing a security document comprising the following steps: applying an image of an owner of the security document to an image area of a substrate layer; Applying personal data of the owner of the security document to a personalization area of the substrate layer; and applying a surface coating to at least the image area of the substrate layer, wherein the surface coating is based on nanomaterials, and wherein the surface coating is resistant to application of one or more further layers to at least the image area of the substrate layer coated with the surface coating.
- a security document with a surface coating based on nanotechnology which was produced by such a method, makes it difficult or prevents manipulation of the document.
- the application of new photos over the original photo of the document owner and the covering with a new layer of plastic, for example a new layer of lacquer or a new lamination is prevented or at least made more difficult due to the material properties of the surface coating, i.e. the properties of the nanomaterials.
- the same embodiments that were described above in relation to the security document can also be produced with the said method. The same statements apply to their technical advantages.
- FIG. 1 shows a schematic diagram of a security document 100 with a
- FIG. 2 is a schematic diagram of a forgery attempt 200 in the
- FIG. 3 shows a schematic diagram 300 of two exemplary teardrop shapes 301, 303 as they can form and roll off the surface of a security document 100 according to the disclosure;
- FIG. 4 is a schematic diagram of a method 400 for making the
- FIG. 5 is a schematic diagram of a method 500 for making a
- FIG. 1 shows a schematic diagram of a security document 100 with a surface coating 106 in accordance with the disclosure.
- the security document 100 comprises a substrate layer or a substrate 101 and a surface coating 106.
- the substrate layer 101 comprises an image area 102 in which an image 103 or photo of an owner of the security document 100 is applied, and a personalization area 104 in which personal data 105 of the owner of the security document 100 are applied.
- the owner can be anyone.
- the image 103 can be a biometric photo depicting biometric properties of the holder.
- a personal relationship exists between the picture 103 and the owner's personal data 105, ie the personal data represent a description of the owner in words, e.g. his name, his ID, his address, his characteristic properties, etc., while the photo 103 represents a pictorial description of the owner.
- the personal relationship is an unambiguous mapping which unambiguously assigns an image 103 to the personal data 105.
- the image 103 can be applied to the substrate layer 101, for example, using a color personalization technology based on a digital printing process.
- the colors of the image 103 can also be used a special method can be introduced into the material of the substrate layer 101, so that image data and the card body form an indissoluble bond, whereby the security document 100 becomes tamper-proof.
- the image 103 and the personal data 105 of the cardholder can thus be incorporated directly into the card or the substrate layer 101. They are inextricably linked to it and thus offer the highest possible protection against counterfeiting.
- the substrate layer 101 can itself comprise several different layers, which can be brought together, for example, by lamination.
- the substrate layer 101 can also be a finished polycarbonate card on which the image 103 is printed.
- a contactless security chip and its antenna can be incorporated into the substrate layer, e.g. in one of the layers of the substrate layer.
- the chip can be operated inductively, i.e. it does not have its own power supply, but draws its energy from the electromagnetic field of a reader.
- the chip can contain the individual data 105 of the cardholder.
- a security thread can be integrated into the substrate layer 101 as a security feature. It can run horizontally or vertically, for example, and can be personalized with the document number and the name of the ID card holder.
- a hologram can be applied to the surface of the substrate layer 101 as a further security feature, which can for example holographically reproduce a state emblem, the image 103 of the document owner, e.g. in stylized form, as well as the name and the serial number.
- the surface coating 106 is applied or applied to at least the image area 102 of the substrate layer 101. However, it is advantageously applied over the entire substrate layer 101 in order to simplify production and to offer protection for the entire document 100.
- the surface coating 106 is based on nanomaterials or nanoparticles and is resistant to the application of one or more further layers on at least the one with the Surface coating 106 coated image area 102 of the substrate layer 101. That is to say, the surface coating 106 has such properties or a specific characteristic which prevents or at least makes it significantly more difficult to apply additional layers to the surface coating 106.
- the surface coating 106 can be applied directly to the substrate layer 101 provided with the photo 103 and the personal data 105 of the owner. Alternatively, one or more further layers can be present between the substrate layer 101 and the surface coating 106, for example a lacquer layer above the photo 103 or an adhesive layer for sticking the photo 103 onto the substrate layer 101.
- the photo 103 and the personal data 105 can be transferred to the Substrate layer 101 can be glued or printed on.
- the surface coating 106 can be applied to the substrate layer 101 by various methods, for example chemical, mechanical, thermal or thermomechanical methods.
- the substrate layer 101 can be mechanically and / or chemically pretreated before the coating.
- the characteristics of the interface layer depend on the coating process and the substrate pretreatment, e.g. grinding, microblasting, pickling, silanizing or silicating, etc.
- Adhesion promoters can be used for this, i.e. substances that create a close physical or chemical bond at the interface of immiscible substances.
- the surface coating 106 can, for example, by means of painting, spin coating, spray painting, thermal spraying, dip painting, hot dipping, enamelling, slot nozzle coating, dip coating, spray coating, roller coating, electroplating, chromating, galvanizing, phosphating, tinning, sol-gel, mechanical powder coating, thermal spraying , Build-up soldering, plasma-powder build-up welding, build-up welding, vortex sintering, etc. can be applied to the substrate layer 101.
- the surface coating 106 can be resistant to the application of another image to the image region 102 of the substrate layer 101 coated with the surface coating 106, as shown, for example, in FIG.
- the resistance of the surface coating 106 to the application of one or more further layers can be embodied in such a way that the one or more further layers applied detach from the surface coating 106.
- the surface coating 106 can be designed in such a way that, due to the structure based on nanoparticles, even adhesion promoters, as described above, cannot adhere to the surface coating 106.
- the surface coating 106 can comprise one or more surface functional layers, which give the security document 100 one or more functions based on the nanomaterials. These functions can be typical properties of nanomaterials, such as high scratch resistance, hardness and strength, solvent resistance, dirt repellency, solvent resistance, acid resistance, stability in solutions, biocompatibility,
- the surface coating 106 can comprise a non-stick coating, the non-stick coating preventing one or more further layers from sticking or sticking over or printing on to the substrate layer 101 coated with the surface coating 106, in particular with a different image, as shown for example in FIG.
- the surface coating 106 can comprise a diffusion coating, the diffusion coating preventing the penetration of adhesive into the surface of the substrate layer 101 coated with the surface coating 106.
- the surface coating 106 may include an anti-scratch coating that prevents scratching or abrasion of the surface coating 106.
- the above-mentioned coatings, ie non-stick coating, diffusion coating and scratch protection coating, can form independent coatings within the surface coating 106 and / or the surface coating 106 can include the functionalities of these layers, ie non-stick properties, diffusivity and scratch protection.
- the surface coating 106 based on nanomaterials has a higher scratch resistance than a conventional laminate coating or lacquer coating.
- a thickness of the surface coating 106 can range, for example, from the single-digit nanometer range to the single-digit micrometer range.
- the surface coating 106 can be made hydrophobic or superhydrophobic.
- the surface coating 106 can be designed, when wetted with water (or with another liquid), to cause the water or the other liquid to roll off with the formation of a specific drop shape, e.g. as shown in FIG. 3.
- the specific drop shape can form, for example, a contact angle to the surface of the surface coating 106 of greater than 90 degrees, for example a contact angle in the range from 120 degrees to 170 degrees.
- the specific drop shape can form a contact surface with the surface of the surface coating 106 which is smaller than 10 percent of the drop surface, in particular in the range from 2 to 3 percent or in the range from 0.5 percent to 1 percent of the drop surface, as for example in the illustration of Figure 3 is described.
- the surface coating 106 can include, for example, one or more of the following nano-materials: carbon-containing nanoparticles, semiconductors, metals, metal sulfides, polymers, metal and semimetal oxides, in particular titanium dioxide, silicon dioxide, iron oxide, zinc oxide, aluminum oxide, silver.
- the substrate layer 101 can be based on a thermoplastic, in particular polycarbonate.
- the surface coating 106 can be materially connected to the substrate layer 101. That is, the combination of surface coating 106 and substrate layer 101 can be held together by atomic or molecular forces. They thus form a non-detachable connection that can only be separated by destroying the connecting means.
- the surface coating 106 can be connected to the substrate layer 101 by means of soldering, gluing, welding, vulcanizing.
- the nanomaterials can have nanoparticles with particle sizes between 2 and 60 nm, preferably between 5 and 50 nanometers.
- the surface coating 106 can preferably be transparent in the optical wavelength range, so that the image 103 and the personal data 105 of the card holder are clearly visible.
- the surface coating 106 is applied only to part of the surface of the security document 100, in particular to the image area, while a different coating, for example a conventional lacquer or glaze, is applied to another part of the surface. It is then possible, based on the special beading effect of the surface coating 106, as described above (or described in relation to FIG. 3), to see whether it is the original image of the document holder or whether a new image was subsequently applied to the original surface coating 106.
- the drop shape on the original image is as described above, ie drop formation with a contact angle greater than 90 degrees, while a forms another drop shape, for example at a contact angle of less than 30 degrees (or also 20 degrees or 40 degrees).
- the competent authority can quickly check whether it is the original image of the document holder or whether a new image is subsequently added together with a new coating was applied. In the latter case, drops would form on the entire surface at a smaller contact angle, for example less than 30 degrees.
- the image of the owner of the security document comprises a security feature which is only recognizable when coated with the surface coating 106, but not in the case of a conventional coating.
- this security feature can contain certain materials that interact with the material of the surface coating 106 so that there is a visible effect. This can be, for example, a hologram or a coloring of the surface coating 106 in the area of the security feature or another effect.
- the surface coating 106 comprises a specific pattern which makes counterfeiting of the coating difficult.
- this specific patterning can be a function of the personal data of the document owner or as a function of the image information of the image of the owner.
- the surface coating 106 comprises a color coding, for example different colors or color transitions, for example a color pattern, which is applied depending on the personal data of the document owner and / or the image information of the document owner.
- the image of the document owner can include certain information, for example a light / dark distribution or certain biometric information that can be derived from the image.
- the color coding of the surface coating 106 can be applied depending on this information of the image of the document owner. This does not only apply to the color coding, other features of the surface coating 106 can also depend on this information of the image of the document owner, e.g. a structuring of the surface coating 106 or a pattern of the surface coating 106.
- FIG. 2 shows a schematic diagram of a forgery attempt 200 with the security document 100 according to the disclosure.
- the illustration shows the attempt to stick a new image 203 of another person, who does not correspond to the owner of the security document 100, onto the original image 103 of the rightful owner and possibly to provide it with a glaze layer or a laminate 206 to create the new image 203 to make it look real.
- the specific surface coating 106 of the security document 100 is based on nanomaterials or nanoparticles and is resistant 211, 212 to the application of one or more additional layers, such as the layer 202 with the new photo 203 and the glaze layer or laminate 206.
- the surface coating 106 has such properties or specific characteristics which prevent or at least make it significantly more difficult to apply additional layers 202, 206 to the surface coating 106.
- the resistance of the surface coating 106 to the application of one or more further layers 202, 206 is embodied in the illustration in FIG. 2 in such a way that the one or more further layers 202, 206 applied are detached from the surface coating 106. Due to the structure of the surface coating 106, which is based on nanoparticles, even adhesion promoters cannot adhere to the surface coating 106.
- the surface coating 106 can comprise one or more surface functional layers, which give the security document 100 one or more functions based on the nanomaterials. These functions can be typical properties of nanomaterials, such as high scratch resistance, hardness and strength, solvent resistance, dirt repellency, solvent resistance, acid resistance, stability in solutions, biocompatibility,
- the surface coating 106 can comprise a non-stick coating, which involves adhering or sticking over or printing one or more further layers 202, 206 with the new image 203 on the substrate layer 101 coated with the surface coating 106.
- the surface coating 106 can comprise a diffusion coating, which prevents the penetration of adhesive into the surface of the substrate layer 101 coated with the surface coating 106, so that the new image 203 does not stick to the surface coating 106.
- the surface coating 106 may comprise an anti-scratch coating that prevents scratching or abrasion of the surface coating 106 so that it cannot be roughened in order to stick or tack the new image 203 on.
- FIG. 3 shows a schematic diagram 300 of two exemplary teardrop shapes 301, 303 as they can form and roll off the surface of a security document 100 according to the disclosure.
- the surface coating 106 Because of the surface coating 106, there is a specific beading effect when the security document 100 is sprayed with water (or another liquid). This means that the sprayed-on water forms a specific drop shape 301, 303, which differs from the drop shape of other surfaces, e.g. a conventional glaze layer or a lamination layer.
- the resulting tear-out effect is different from that which can be seen on the surface coating 106 .
- the hydrophobicity of the surface coating 106 can be determined via the contact angle 302, 304, as shown in FIG. 3. The higher the contact angle 302, 304, the more hydrophobic the surface.
- hydrophilic those with a contact angle greater than 90 ° are called hydrophobic.
- contact angles of up to 160 ° (superhydrophobicity) or even 170 ° can be achieved. This means that only about 2 to 3% of the droplet surface is in contact with the surface 305, 306 of the surface coating 106, that is to say this has an extremely low wettability.
- the surface coating 106 can be hydrophobic, as shown on the right-hand side in FIG. 3, or superhydrophobic, as shown on the left-hand side in FIG. 3.
- the surface coating 106 can be designed, for example, to cause the water or the other liquid to roll off when wetted with water (or another liquid) with the formation of a specific drop shape 301, 303.
- a hydrophobic surface coating 106 for example, the tropical shape 303 shown on the right in FIG. 3 is formed
- a superhydrophobic surface coating 106 for example, the tropical shape 301 shown on the left in FIG. 3 is formed.
- the specific drop shape 301, 303 can, for example, form a contact angle 302, 304 to the surface of the surface coating 106 of greater than 90 degrees, in particular a contact angle 302 in the range from 120 degrees to 170 degrees, as in the case of the superhydrophobic surface coating 106 on the left-hand side of FIG 3 shown.
- the specific drop shape 301, 303 can, for example, form a contact surface 305, 306 with the surface of the surface coating 106, which is smaller than 10 percent of the drop surface, in particular in the range from 2 to 3 percent or in the range from 0.5 percent to 1 percent of the Droplet surface, as shown in the case of the superhydrophobic surface coating 106 on the left-hand side of FIG. 4 shows a schematic diagram of a method 400 for producing the security document 100 in accordance with the disclosure.
- the method 400 comprises the following steps: application 401 of an image 103 of an owner of the
- Security document 100 on an image area 102 of a substrate layer 101;
- FIG. 5 shows a schematic diagram of a method 500 for producing a security document 100 in accordance with the disclosure.
- the method 500 shows the manufacturing steps illustrated above for FIG. 4 as abstract method steps.
- the method comprises a first method step 501: applying 501 an image 103 of an owner of the security document 100 to an image area 102 of a substrate layer 101.
- the method 500 includes a second method step 502: applying 502 of personal data 105 of the owner of the security document 100 to a personalization area 104 of the substrate layer 101.
- the method 500 further comprises a third method step 503: applying 503 a surface coating 106 to at least the image area 102 of the substrate layer 101, the surface coating 106 being based on nanomaterials, and the surface coating 106 being resistant to an application of one or more further layers on at least the image area 102 of the substrate layer 101 coated with the surface coating 106, as already shown in more detail above with regard to FIGS. 1 to 3.
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Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019129964.0A DE102019129964A1 (de) | 2019-11-06 | 2019-11-06 | Sicherheitsdokument mit Oberflächenbeschichtung auf Basis von Nanomaterialien |
| PCT/EP2020/080647 WO2021089464A1 (de) | 2019-11-06 | 2020-11-02 | Sicherheitsdokument mit oberflächenbeschichtung auf basis von nanomaterialien |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4054853A1 true EP4054853A1 (de) | 2022-09-14 |
Family
ID=73131708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20801194.0A Pending EP4054853A1 (de) | 2019-11-06 | 2020-11-02 | Sicherheitsdokument mit oberflächenbeschichtung auf basis von nanomaterialien |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4054853A1 (de) |
| DE (1) | DE102019129964A1 (de) |
| WO (1) | WO2021089464A1 (de) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2730460A1 (de) * | 1976-07-14 | 1978-02-02 | Emi Ltd | Schutzmaterialien |
| FR2890332A1 (fr) * | 2005-09-07 | 2007-03-09 | Gemplus Sa | Support personnalise de type carte d'identification comportant des moyens anti-falsification |
| DE102007003955B4 (de) * | 2007-01-26 | 2020-12-31 | Bundesdruckerei Gmbh | Rohling, Verfahren zur Herstellung und Verwendung desselben sowie Verfahren zur Herstellung eines Wert- und Sicherheitsdokumentes |
| DE102008012430B4 (de) * | 2008-02-29 | 2010-05-06 | Bundesdruckerei Gmbh | Polymerschichtverbund für ein Sicherheits- und/oder Wertdokument und Verfahren zu dessen Herstellung sowie Sicherheits- und/oder Wertdokument (Veränderung der Oberflächenenergie) |
| US20140083473A1 (en) * | 2012-09-24 | 2014-03-27 | Spectra Systems Corporation | Use of photo catalytic material for self-cleaning banknotes |
| DE102013108666A1 (de) * | 2013-08-09 | 2015-03-05 | Leonhard Kurz Stiftung & Co. Kg | Verfahren zur Herstellung eines Mehrschichtkörpers sowie Mehrschichtkörper |
| FR3015356B1 (fr) * | 2013-12-20 | 2015-12-25 | Oberthur Fiduciaire Sas | Procede de traitement de surface d'un document de securite et document de securite associe |
| FR3030363B1 (fr) * | 2014-12-19 | 2022-05-13 | Arjowiggins Security | Procede de traitement d’un element de securite comportant une structure optique ayant une face non plane |
-
2019
- 2019-11-06 DE DE102019129964.0A patent/DE102019129964A1/de active Pending
-
2020
- 2020-11-02 EP EP20801194.0A patent/EP4054853A1/de active Pending
- 2020-11-02 WO PCT/EP2020/080647 patent/WO2021089464A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021089464A1 (de) | 2021-05-14 |
| DE102019129964A1 (de) | 2021-05-06 |
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