EP2953799A1 - Sicherheitsmerkmal für ein wert- oder sicherheitsprodukt sowie verfahren zum herstellen des sicherheitsmerkmals - Google Patents
Sicherheitsmerkmal für ein wert- oder sicherheitsprodukt sowie verfahren zum herstellen des sicherheitsmerkmalsInfo
- Publication number
- EP2953799A1 EP2953799A1 EP14704765.8A EP14704765A EP2953799A1 EP 2953799 A1 EP2953799 A1 EP 2953799A1 EP 14704765 A EP14704765 A EP 14704765A EP 2953799 A1 EP2953799 A1 EP 2953799A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- security
- light
- product
- strand
- security feature
- 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.)
- Granted
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
- B42D25/21—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose for multiple purposes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
- B42D25/23—Identity cards
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
- B42D25/24—Passports
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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
- B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
- B42D25/26—Entrance cards; Admission tickets
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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
- B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
- B42D25/285—Gift cards
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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
- B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
- B42D25/29—Securities; Bank notes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/328—Diffraction gratings; Holograms
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- B42D2035/20—
-
- 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
- B42D25/337—Guilloche patterns
Definitions
- Security feature for a value or security product and method of making the security feature
- the present invention relates to a security feature for a value or security product, for example a security or security document or security element, a value or security product having the security feature and a method for producing the security feature.
- a value or security document can be, for example, a means of payment, in particular a banknote, or another value document or else a personal document, in particular a passport.
- the documents can basically consist of paper, another fiber felt or cardboard or in principle also of an organic polymer, ceramic material, glass or of metal or contain this. Cards and card-shaped components of book-type documents may preferably be made of laminated polymer films. To test the authenticity and / or coding of information, these products have the security features according to the invention.
- security features used in the value or security products can only serve to prove the authenticity of the products, regardless of their nature or by their user.
- security features are, for example, guilloches, watermarks, embossing prints, tipping pictures, holograms, the special paper of banknotes and the like.
- Personalizing, for example personalizing, security features also contain, in coded form or also in plain text, information about the type of document, about its owner and / or about an object to which the document is assigned.
- Such information may include a face image / portrait (for example in the form of a photograph) of the owner, his or her personal data such as name, date of birth, place of birth, signature, a personal identifier such as a membership number, or biometric data of the holder, such as fingerprints. Iris and retina detection.
- Another security feature that individualizes the document can be, for example, a serial number of the document or the chassis number of a motor vehicle to which the document is assigned.
- DD 301 1 15 A7 a tamper-proof paper is described which contains at least one type of regularly and / or arbitrarily designed, regularly and / or placed distributed or arranged special planchettes. This restricts or prevents the misuse of the special paper.
- the substance-water mixture for producing the paper contains, in addition to the planchettes, UV-activatable mottling fibers.
- security papers contain security threads.
- a display which is formed from planar light guide structures. These light guide structures are provided with a diffraction grating or hologram having a surface relief, so that the light guided by the light guide structures is radiated from the diffraction grating or hologram.
- US 2004/0229022 A1 discloses a security device having reflective layers and further layers having characters, which layers are in a layer composite.
- DE 10 2008 033 716 B3 discloses a value or security document in which a light guiding structure for guiding light in a plane is substantially parallel to the top of the document. The light is decoupled from the light guide structures to local modifications and is thus visible on a surface. For example, light coupled in via the side edge of the document may exit at the surface via these modifications. The modifications are produced in the form of recesses in boundary layers, which delimit the light-guiding structures.
- CH 677 905 A5 describes a method for producing a multilayer ID card.
- the card is made up of several film layers which are printed using different printing technologies.
- the cover films, the base films and other films are printed both digitally and by means of conventional printing processes.
- the base film is made of plastic and can be formed in two layers with fiber optics embedded therein.
- the faces of the light guide lie on the edges of the card and allow the input or Decoupling of light by means of appropriate readers. Thus, a personal arrangement of the optical fibers can be read by machine.
- the security feature should be located in a secure counterfeiting and / or falsification and / or copy of the inner product layer.
- the present invention is also based on the essential further object of providing a cost-effective, simple and quickly realizable, in particular individualizing, security feature. Another object of the present invention is to provide a security paper that is impossible or extremely difficult to falsify.
- value or security product ' which may be in particular a security or valuable document or a security element designed in particular as a transfer element is used, including in particular a means of payment, such as a banknote, or any other value document, such as a security, such as a check, or a visa page in a passport, bill of lading, tax stamp, postage stamp, ticket, or the like. It may, however, also be a passport, identity card, driver's license or other ID card or access control card, vehicle registration document, vehicle registration document, visa, check,
- a product according to the invention can also be a security element, for example a sticker, label or the like, which has the security feature according to the invention and which can be permanently connected to a for-product of a security and / or security document in order to secure the security and value document to form (transfer element).
- the product may be, for example, a smart card.
- the security or security document may be in a banknote format or in ID 1, ID 2, ID 3 format or any other format, such as a booklet or leaflet, such as a passport-like item.
- a value or Security product can also be a laminate of several document layers, which are connected register-accurate under heat and under increased pressure. These products should meet the standardized requirements, for example ISO 10373, ISO / IEC 7810, ISO 14443.
- the product layers consist, for example, of a carrier material that is suitable for lamination.
- the value or security product is preferably formed from a fiber felt, for example from paper or cardboard.
- a fiber mass especially of cotton, wood, rags, flax, jute, straw or the like is used.
- the value or security product can also be produced from other fiber materials, for example from mineral fibers, such as spun glass or rock wool, animal fibers, such as wool, leather or silk, or from polymer fibers or from mixtures of these materials.
- it can also be formed from a non-fibrous material, in particular from polymer, glass, metal or ceramic.
- the polymer of the fibrous or non-fibrous material may be selected from a group comprising polycarbonate (PC), especially bisphenol A polycarbonate, polyethylene terephthalate (PET), their derivatives such as glycol modified PET (PETG), polyethylene naphthalate (PEN), polyvinyl chloride (PEN).
- PC polycarbonate
- PET polyethylene terephthalate
- PET polyethylene terephthalate
- PEN polyvinyl chloride
- PVC polyvinyl butyral
- PMMA polymethyl methacrylate
- PI polyimide
- PVA polyvinyl alcohol
- PS polystyrene
- PVP polyvinylphenol
- PP polypropylene
- PE polyethylene
- TPE thermoplastic elastomers
- TPU thermoplastic polyurethane
- ABS acrylonitrile-butadiene-styrene copolymer
- Preferred polymers are PC and PC / TPU / PC.
- the polymers may be either filled or unfilled. In the latter case they are preferably transparent or translucent. If the polymers are filled, they are opaque.
- the product can be made of several of the aforementioned materials.
- security feature a feature which preferably causes an optical impression which can be recognized by means of optical recognition methods.
- the visual impression is created by light emission in the form of an optically perceptible design.
- This design preferably includes an individualizing information.
- the security feature may be configured to be directly perceived by a user, or it may be a machine-readable feature. In the latter case, the security feature is detected by means of, for example, electromagnetic radiation, spatially resolved receiving device and perceived by a viewer men or evaluated by means of a further device provided for this purpose.
- the security feature can be manufactured as part of a value or security document or as a separate product (security element). The latter can be glued to the document, for example.
- the security feature will generally occupy only a portion of the area of the document.
- the objects are achieved by a security feature for a value or security product.
- This security feature is formed by at least one Lichtleit Modell that at least partially passes through a product layer.
- This can already be the value or security product itself or merely a part of the value or security product.
- the product layer has a front and a rear main surface.
- the at least one light guide structure has in each case a first end face for a light entrance and a second end face for a light exit. All end faces of the at least one light guide structure are located in the region of one of the main surfaces.
- the light guiding structure is formed by a material strand section.
- the objects are also achieved by the value or security product having at least one inventive security feature.
- the objects are also achieved by a method for producing the security feature.
- This process comprises the following process steps:
- the light guide structure By forming the light guide structure in the form of a material strand section, it is firstly very easy to form the light guide structure in the product layer, so that the production of the product layer with the light guide structures can be made extremely simple and cost-effective. In particular, no complicated production methods, such as laser ablation, for example as in DE 10 2008 033 716 B3, are required. Furthermore, it is also advantageous to arrange the end faces of the light guide structures in the region of one or both main surfaces of the product layer, because the value or security product thereby receives a design serving as a security feature, which can be easily perceived by a viewer. In addition, the arrangement of the end faces of the light guide structures on the surfaces of the product layer also allows a variety of design options that are not given in their arrangement on the side edge. Accordingly, with the arrangement of the light guides shown in CH 677 905 A5, there are only a few spatial possibilities of the arrangement for the light entry and exit. In addition, verification in this case is usefully made by machine; Verification with the naked eye is not readily feasible
- a first end face of the at least one light guide structure for example for light entry, in the region of a first main surface of the product layer and a second end face of this light guide structure, for example for the light exit, can be in the region of a second main surface of the product layer ( two-sided embodiment, see-through feature).
- both end faces of the at least one light guide structure can be located in the region of only one of the two main surfaces of the product layer (one-sided embodiment).
- the electromagnetic radiation used is preferably radiation in the visible spectral range, ie in a spectral range from about 400 nm to about 750 nm. It may alternatively be UV radiation or IR radiation. It is advantageous if the electromagnetic radiation used is not substantially absorbed in the light guide structures.
- an optically perceptible security feature is created whose imitation or counterfeiting is extremely complicated.
- This safety feature consists in the delocalized electromagnetic radiation in the light guide structures being delocalized into the light guide structures via an end face in the region of one of the main surfaces of the product layer to the opposite end face in the region of one of the main surfaces of the product layer, where it exits again.
- the incoming electromagnetic radiation is preferably radiation in the visible spectral range, ie in a spectral range from about 400 nm to about 750 nm. It may alternatively be UV radiation or IR radiation. It is advantageous if the electromagnetic radiation used is not substantially absorbed in the light guide structures.
- the at least one light guide structure is formed from a polymer material.
- the polymer may be one of the polymer materials which are also suitable for the formation of the value or security product itself and from which, for example, the product layer may also be formed.
- the strand of material can be supplied as a thread, yarn, fiber or fiber bundles or the like from a donor to the precursor.
- the material strand may be stored.
- the dispenser is, for example, a unrolling or the strand can be made, for example by spinning, extruding or another strand formation technique, immediately before introduction into the starting material.
- the dispenser is, for example, an extrusion nozzle or a spinneret.
- the Lichtleit Geneva may also be present as a glass fiber. This is preferably stored and fed from the supply to the precursor.
- the light guide structures present in the form of material strand sections are formed by a transparent material having a first refractive index and enclosed by a second material which has a first refractive index second refractive index, which is lower than the first refractive index.
- the second material may be transparent, translucent or opaque.
- the refractive indices are respectively defined with respect to the wavelength of the electromagnetic radiation used.
- the second material can be formed in any desired shape, as long as it encloses the material strand almost completely (over> 90% of the surface of the material strand section), better still completely.
- the second material may be formed, for example, in the manner of a jacket or an envelope, for example in the form of a tube.
- the second material may also represent an embedding material for the material strand section, for example by the product layer itself forming the second material surrounding the light guide structure, provided that the product layer is formed by a homogeneous medium.
- Air is particularly suitable as a second material because of its very low refractive index. In the case of a fiber felt for the product layer forming potting material, air eventually fills in spaces between the fibers and forms the second material.
- the second material surrounding the material strand section may preferably be formed from a polymer, in particular from one of the polymers which are also indicated for the formation of the valuable or security product.
- the at least one light-conducting structure is held in the product position by means of an adhesion layer.
- the adhesion layer is formed by a hot-melt adhesive.
- the hot-melt adhesive has a softening temperature of 50 to 200 ' ⁇ , preferably from 80 to 120 ° C, on. After converting the film from the primary material to the (solidified) product layer, the hot-melt adhesive unfolds its adhesive properties and anchors the optical fiber structure in the product layer as the product layer is heated along with the optical fiber structure, thereby softening the hot-melt adhesive.
- the adhesion layer can also be formed by a UV-curable adhesive.
- the adhesion layer preferably has a second refractive index at one of the wavelengths of the electromagnetic radiation used. ment, which is smaller than the first refractive index of the material strand section.
- the adhesion layer forms the second material surrounding the material strand section, which causes total reflection of the electromagnetic radiation in the material strand section.
- the at least one light guide structure contains at least one material absorbing in the visible spectral range, so that white radiation which has entered the light guide structure appears colored.
- An absorbing material of the light guiding structure can be provided in particular by one or more absorptive dyes which are introduced into the material of the light guiding structure.
- a single absorptive dye with a given absorption and reflectance spectrum or a mixture of several absorptive dyes can be used, each having an individual absorption and remission spectrum and in the mixture have a different absorption and remission spectrum of the individual absorptive dyes, which results subtractively from the spectra of the individual absorptive dyes.
- the absorptive dyes may be inorganic or organic compounds. Organic absorptive dyes may typically be azo compounds. Although the absorptive dyes absorb electromagnetic radiation conducted through the optical waveguide structure, they do not scatter or substantially scatter them, so that the radiation in the optical waveguide structures is preferably not substantially or not substantially attenuated.
- the at least one optical waveguide structure additionally or alternatively to the absorptive dyes contains at least one luminescent material in the visible spectral range, such that the optical waveguide structure luminesces when irradiated with excitation radiation (photoluminescence, both Stokes and anti-Stokes -Shift).
- excitation radiation photoluminescence, both Stokes and anti-Stokes -Shift.
- Luminescence mechanisms conceivable, such as electroluminescence, wherein the Lichtleit Jardin luminesces when generating an electrostatic field in the Lichtleit Cook.
- the excitation radiation for the luminescence is preferably UV radiation (UVA, UVB or UVC radiation), but may also be IR or visible radiation.
- a luminescent material of the optical waveguide structure can in particular be provided by one or more luminescent substances which are introduced into the material of the optical waveguide structure.
- Luminescent substance can, for example, luminesce broadband or narrow band in the visible spectral range. If the spectral distribution of the luminescence in this area is not uniform, the emitted light is also colored.
- the luminescent substance as well as the absorptive dye be organic or inorganic. Typical luminescent substances are specified, for example, in US Pat. No. 3,474,027 A, DE 198 60 093 A and DE 10 2007 035 592 A1, the disclosure of which is incorporated into the present application. These are host lattices which are doped with rare earths as luminophores, in particular substances doped with terbium, cerium and / or europium, for example oxysulphides and oxynitrides.
- the pigments formed herewith can additionally be coated with organic substances in order to increase the quantum yield of the luminescence.
- quantum dots can also be used, ie semiconductor particles whose size is in the nm range, for example based on CdS.
- organic luminescent substances are also usable, such as rhodamine 6G or fluorescein.
- the luminescent substances do not scatter the electromagnetic radiation transmitted through the optical waveguide structure or do not significantly, so that the radiation in the optical waveguide structures is preferably not appreciably or not substantially attenuated.
- the absorptive dyes and the luminescent substances can be used individually or combined in a light-guiding structure. If several optical waveguide structures are present, they may contain an absorptive dye and / or a luminescent substance or different absorptive dyes and / or luminescent substances. In the latter case, the distribution of the color (including the specific absorption in spectral ranges other than in the visible spectral range) and / or the spectral difference of the luminescence between the optical waveguides can represent another security feature that can also encode information.
- the light guide structures can be located in any position in the product layer.
- the light-guiding structures are preferably by short, for example from 100 ⁇ to 10 mm, more preferably from 200 ⁇ to 5 mm, even more preferably from 300 ⁇ to 2 mm, even more preferably from 400 ⁇ to 1000 ⁇ and most preferably from 500 ⁇ to 800 ⁇ , long material strand sections formed, which most preferably do not branch, but extend exclusively from a light entrance end face to a light exit end face.
- the material strand sections preferably have a round, very particularly preferably a circular, cross-section.
- the diameter of such material strand sections can For example, in the range of 10 ⁇ to 500 ⁇ , preferably from 30 ⁇ to 150 ⁇ and most preferably from 40 to 100 ⁇ lie.
- the cross section may also be oval, quadrangular, in particular square or rectangular, or polygonal. If it is rectangular, the material strand sections can be flat strips.
- the cross section of the material strand sections can be in particular in the range of 1600 to 10,000 ⁇ m 2 .
- the material strand sections may be arranged regularly or irregularly in the product layer.
- the material strand sections can traverse the product layer (see-through feature), for example in a straight track in a direction perpendicular to their main surfaces, so that in each case one end face of the material strand sections lies in the region of one of the two main surfaces. However, the material strand sections may also pass through the product layer in a curved track connecting the two major surfaces of the product layer.
- the end faces are therefore arranged, when viewing the product layer, either exactly perpendicular to the main surfaces one above the other or offset from one another.
- at least two light-guiding structures are arranged one behind the other in a production direction of the material of the product layer in the product layer.
- the material of the product layer may be a fiber felt material, in particular a paper.
- the paper is typically produced in a rotary screen paper machine as a continuous paper web. In the production, the manufacturing process results in a production direction in which the paper web is produced.
- the material strand sections of these light guide structures preferably extend in each case from one main surface to another and pass through the product layer for this purpose.
- the material strand sections can only partially pass through the product layer, so that all end faces are located only in the region of one of the main surfaces. If a plurality of such arranged Lichtleit Modellen are arranged in these variants, this results in lines on the product layer lying end faces of the material strand sections.
- the end faces of the material strand sections may be arranged in a predetermined dot pattern on one or both main surfaces of the product layer.
- the dot pattern can be formed in a somewhat shaped distribution of the end faces on one or both main surfaces of the product layer, which, for example, form a self-contained representation. ment, in particular an image, picture element, character, especially an alphanumeric character, a symbol, coat of arms, a line or another simple geometric shape, such as a formula, or the like.
- the dot pattern may contain information, for example the denomination of the banknote provided therewith, and thus in particular also individualizing information.
- the dot pattern is preferably formed exclusively by the exit surfaces of the material strand sections.
- the product layer is formed at least substantially from a fiber felt.
- the fiber felt fabric may be formed from paper or paperboard or from another fiber mass.
- vegetable fibers especially fibers of cotton, wood, rags, flax, jute, straw or the like are used.
- mineral fibers such as spun glass or rock wool, animal fibers, such as wool, leather or silk, or polymer fibers in question.
- a precursor is first formed from a starting material, for example a film of fibrous materials which are skimmed off from a paper fiber slurry by means of a round or wire sieve, or a soft polymer film in an extruder, where the film forms.
- the product layer is then formed from the film by conversion, for example by dewatering the fiber film, so that the fiber felt thickens, or the polymer film solidifies.
- the material strand is introduced into the precursor, for example, the fibrous film located on the sieve or a still soft polymer film, for example by pressing the material strand into the precursor.
- a material strand is used, which has a multiple of the length of the material strand sections contained in the finished product layer.
- This material strand can be produced, for example, immediately before introduction into the precursor by means of an extrusion die, so that the material of the strand is still bendable and soft.
- mechanical means can be used which selectively push the material strand locally, ie at defined locations along the strand of material, into the material of the precursor and optionally through it ,
- a profiling or embossing agent while
- a comb can be used, which pushes the material strand into and out of the material by means of its teeth, wherein the intervening sections of the material strand run at least partially within the precursor.
- a contouring roller by means of whose nose strips the material strand is selectively penetrated into and / or pushed through the preliminary product.
- a wavy strand is obtained, which occurs on the voltage applied to the contouring roller side of the film at regular intervals through the main surface to the outside and the rest, either full - Continues within the film or sections within the film and sections also exits at the opposite side to the contouring from the film.
- the contouring roller may also have a non-uniformly arranged toothing with not equiangularly arranged nose strips, so that the material strand is pressed in unevenly spaced locations in the film.
- a planar stamp with embossing elements which are evenly or non-uniformly spaced from each other, with whose profiling the material strand is pressed into the film.
- the profiling of this stamp can be designed in the form of a pattern, so that the end faces are arranged in the form of this pattern, in particular if several strands of material are introduced in a planar manner next to one another.
- the material strand When converting the precursor into the product layer, the material strand is fixed in position in the starting material. After conversion, the outer sections of the material strand are removed, for example by shearing, so that isolated material strand sections of the light guide structures form within the product layer. Their faces arise during removal of the outer sections of the material strand, for example as
- Cut or shear surfaces preferably flush with the corresponding major surface of the product layer.
- the projecting sections of the material strand can be sheared off, for example, with doctor blades which operate at a shallow angle ( ⁇ 45 °, preferably ⁇ 25 °, even more preferably ⁇ 20 °) against the surface of the product layer.
- a strand of material or even several strands of material guided in parallel, for example, parallel to the running direction of the paper material in the paper machine is fed into the film of the pulp adhering to the sieve .
- a polymer is dispensed from an extrusion nozzle, or an already produced material strand provided by a dispenser, for example a glass fiber.
- a dispenser for example a glass fiber.
- Other donors are also possible.
- the material strand is preferably enveloped by a hot-melt adhesive, which has a lower refractive index than the material of the material strand.
- the material strand is punctually inserted at regular intervals in the paper pulp and optionally pushed through it.
- the manufacturing parameters paper machine speed, feed rate of the material strand, positioning of the contouring roller over the surface of the screen
- portions of the material strand remain between depressed sections above the pulp and other portions below the pulp so that they sag after the paper has dried projecting on both sides outside, or the material strand is completely pressed into the paper pulp, so that only the rearwardly projecting portions protrude outward Shen.
- the material strand can also only partially be pressed into the paper pulp, in which case portions of the strand project above the pulp fiber pulp.
- the polymer material used for this purpose can be converted into the film form, for example by extrusion.
- the material strand is provided in this case as described above, for example by extruding from a nozzle immediately before introduction into the still soft polymer or by providing a stored material strand, for example a glass fiber.
- the material strand is introduced or inserted into the still soft polymer material and then deformed by pressing into the polymer material. Finally, protruding portions of the strand of material are removed.
- the material strand is wrapped in the production variants described above with an adhesive, in particular a hot-melt adhesive.
- the adhesive is UV cured, if it is a UV curable adhesive, or heated to soften it, after the introduction of the strand of material into the input material, deformation of the strand of material, and during or after converting the primary material to form the product layer if it is a hot-melt adhesive, so that the material strand firmly bonds with the surrounding material of the product layer.
- the material strand can also be initially stored to produce the product layer and, for example, kept in a roll.
- the material strand can be fed to the precursor, for example, from a dispenser and deformed therein.
- the material of the product layer is preferably opaque or alternatively transparent or translucent, wherein the material in the latter cases can partially absorb the electromagnetic radiation used. In these cases, the electromagnetic radiation emitted by the optical waveguides is visually easily recognizable because a contrast of the light exit surfaces of the optical waveguides to the surrounding material results.
- the product layer into which the light guiding structures are incorporated may be part of the valuable or security product or may itself form the value or security product. For example, it is a single product layer, which is collected with other product layers into a stack and then with these other layers, for example, in a
- Laminating method is combined to form the value or security document.
- the product layer provided with the light-guiding structures can additionally be coated with a protective lacquer, so that the security feature lies inside the finished product and thus can not be readily manipulated by a third party.
- outer layers and / or layers which cover the product layer provided with the light guide structures are to be made transparent or at least translucent so that the optical perception content generated by the light guide structures can be detected by a viewer or a machine.
- this can either be readily considered by a viewer under daylight conditions or under illumination with artificial light by the light falls, for example on the back of the product and enters there through the end faces in the material strand sections of the light guide structures.
- the viewer looks at the opposite side of the value or security product, where the other end faces of the light guide structures are located.
- the transmitted light is visible at these faces.
- the viewer can use this arrangement as a verification feature.
- optical waveguides only partially cross the product layer and their end faces lie in the region of only one major surface of the product layer, mechanical verification is advantageous, since in this case a spatially limited irradiation in the region of the light entry surfaces of the optical waveguides is required and at the same time the spatially limited radiation of passed electromagnetic radiation must be detected by the light exit surfaces.
- the value or security product can be scanned successively, wherein the light exit surfaces of the light guide structures are detected gradually.
- the security and / or security product can have, in addition to the security feature according to the invention, further security features, for example guilloches, micro-writing, holograms, kinegrams and the like.
- a value or security document can also have electronic components, for example an RFID circuit with an antenna. ne and RFID microchip, electronic display elements, LEDs, touch-sensitive sensors and the like.
- the electronic components may be hidden between two opaque layers of the document.
- FIG. 1 shows a banknote with the security feature of the invention in plan view in a schematic representation in a first embodiment; shows two variants of the banknote crossing light guide structure in cross section in a schematic representation; (A) with both located on one of the main surfaces of the bill end faces of the Lichtleit MUST; (B) with located on each one of the main surfaces of the bill end faces of the Lichtleit MUST; (C) is a schematic sectional view through a strand of material with a hot-melt adhesive coating;
- FIG. 1 shows a banknote with the security feature according to the invention in plan view in a schematic representation in a second embodiment
- FIG. 1 shows a method for introducing a material strand into a paper pulp skimmed on a round screen of a paper machine and shearing both sides of external sections of the material strand in a side view in a schematic representation in a second embodiment
- FIG. 1 shows an arrangement for verifying a banknote having a security feature according to the invention.
- FIG. 1 shows an arrangement for verifying a banknote having a security feature according to the invention.
- FIG. 1 shows an arrangement for verifying a banknote having a security feature according to the invention.
- the banknote 100 shown in FIG. 1 is made of a fiber felt fabric.
- the paper of this material is recovered in a conventional manner from a fiber-water slurry in a paper machine with a round screen as continuous material.
- the fiber material is preferably made of cotton.
- the banknote forms a product layer 105 which is formed by separating, for example cutting or punching out, a paper web 500 (FIGS. 4, 5).
- the banknote 100 has a front major surface 101 and a rear major surface 103 (FIGS. 2A, 2B). In the left margin 102 of the bill there is a watermark 130 which has been conventionally created in the papermaking process. Also shown on the front major surface are a few other security features, namely two printed symbols 110 in the form of the denomination of the bill ("50"), for example by means of a color containing an optically variable pigment and a hologram 120 in the form of a transfer element the banknote has other security features, such as guilloche, on (not shown).
- the security feature 200 is formed by a plurality of light guide structures 220 whose light exit surfaces 210 are located on the front main surface 101 of the banknote 100 or the product layer 105. These light guiding structures extend, for example, through the entire banknote body to the rear main surface 103. There, they end and form light entry surfaces 230 which are aligned with the rear main surface of the banknote
- the light exit surfaces When viewing the banknote in the backlight or at least at a light incident on the rear main surface of the banknote, so that there light can enter through the light entry surfaces in the Lichtleitpatenteden, the light exit surfaces light up on the front main surface of the banknote.
- the light exit surfaces are arranged in such a way that together they also reflect the denomination of the banknote ("50").
- the light guide structures 220 are formed by transparent material strand sections 250 that completely pass through the material of the banknote 100 and terminate its light entry surface 230 flush with the rear main surface 103 and its light exit surface 210 flush with the front main surface 101.
- FIG. 2B shows an example of a material strand section running inside the banknote body. Between the rear main surface and the front main surface, the material strand section runs on a tortuous path through the banknote body. As a result, the light entry and the light exit surfaces are not exceeded. each other.
- the material strand section is formed by a polymer, for example
- FIG. 2A shows a light guiding structure, whose two end faces are located on the same main surface of the banknote.
- the material strand section 250 is surrounded on the outside by a hot-melt adhesive material 260 (FIGS. 2A, 2B, 2C).
- This material has a refractive index which is less than that of the material of the material strand section. Therefore, light which has entered the light guide structure 220 is totally reflected upon propagation at the interface with the hot-melt adhesive. As a result, a low degree of attenuation for the propagation of light in the light guide structure is achieved.
- the hot-melt adhesive jacket serves to firmly anchor the material strand section in the material of the banknote 100 so that it can no longer be removed.
- the material of the banknote or the product layer 105 is heated to dryness after dewatering in the paper machine, so that the hot-melt adhesive softens and combines with the banknote material. Therefore, the adhesive forms both an adhesion layer and a total reflection permitting second layer having a refractive index lower than the refractive index of the material of the strand section.
- the material strand sections 250 contain absorbing and / or luminescent substances, resulting in corresponding physical properties for the light guide structures 220. If absorbers in the strand sections cause the material of the strand to have a color but do not unduly obstruct the passage of light, the light exit surfaces 210 may be perceived in color even when illuminated with white light. Several sections of material strand can be colored differently. This results in a variety of design options of light guiding structures of a security feature. If luminescent substances are contained in the material strand sections, the light exit surfaces luminesce colored or white if the luminescence lies in the visible spectral range.
- a second embodiment of the banknote 100 is shown in FIG.
- the banknote likewise has a security feature 200 according to the invention, the light exit surfaces 210 in this case being different in three mutually parallel vertical rows and within the rows are arranged spaced from each other.
- the pattern of the light exit surfaces may, for example, indicate the denomination or the place of production of the banknote in coded form.
- the light guiding structures 220 whose light exit surfaces can be seen on the front main surface 101 of the banknote, run within the banknote body respectively between the front main surface and the rear main surface. All of the light guiding structures of a row together form a course that extends from a lower edge 107 to an upper edge 106 of the banknote.
- each light exit surface on the front main surface of the banknote is associated with a corresponding light entry surface 230 on the rear main surface 103 of the banknote.
- FIG. 4 schematically shows the production method for a fiber felt material provided with light guide structures 220 in a first embodiment.
- the aqueous pulp is drawn in a conventional manner in the figure from the left in the manufacturing direction H by means of a round screen 300 of a paper machine (which rotates in the manufacturing direction) from a slurry of the fiber material, for example made of cotton fibers, wherein a film 310 on the Round sieve trains. This film is dried there by removing water and results in an endless paper web 500.
- a material strand 320 consisting of a polymer is produced by means of an extrusion die 330 and introduced into the paper fiber film.
- the polymer may be, for example, polyamide (PA) or polycarbonate (PC), which is injected into the paper pulp slurry in the molten state.
- the polymer thread produced may additionally comprise a sheath of a hot-melt adhesive.
- the extrusion nozzle has a nozzle opening for the material strand and an annular gap surrounding the nozzle opening concentrically for the hot-melt adhesive material, so that the coated Material strand is produced in an extrusion step (not shown). In the paper pulp, the polymer material gradually cools and becomes solid.
- contouring rollers 350, 360 with äquiangularen profile webs 370 which press the polymer thread locally into the paper pulp.
- a wave-shaped formation of the polymer thread is achieved, the first thread sections 291 are within the paper fiber film, and wherein the front thread loops 270 protrude in second thread sections 292 from the paper material.
- the paper material entrained by the round screen 300 travels along a doctor blade 380 which shears the thread loops 270 projecting on the front main surface 101 flush with the surface of the paper material.
- overhead end surfaces (light entry surface 230 and light exit surface 210) of the material strand sections 250 or light guide structures 220, which are now separated from one another, are formed.
- the material strand sections each extend between two end faces arranged on the same front main surface of the paper web 500. This corresponds to the embodiment according to FIG. 2A (one-sided variant). Not shown in Fig. 4, that it is not only possible, a single such
- FIG. 5 schematically shows the production method for a fiber felt material provided with light guide structures 220 in a second embodiment.
- the aqueous pulp is scooped in a conventional manner in a direction of manufacture H by means of a circular screen 300 of a paper machine (not shown) from a slurry of the fiber material, for example cotton fibers, forming a film 310 on the round screen which is there is dried by removing water and results in an endless paper web 500.
- a material strand consisting of PA or PC for example, is produced by means of an extrusion die 330 and inserted into the paper fiber film. leads.
- the polymer thread produced can in turn additionally comprise a sheath made of a hot-melt adhesive (not shown).
- the paper material entrained by the round screen 300 travels along both sides of the paper web 500 doctor blades 380, 390, which shear the projecting front and rear thread loops 270, 280 flush with the surfaces 101, 103 of the paper web.
- front end faces (light exit surfaces 210) and rear end faces (light entry surfaces 230) of the material strand sections 250 or light guide structures 220, which are now separated from one another, are formed.
- the material strand sections or light guide structures each extend between two end faces arranged on different main surfaces of the paper web. This corresponds to the embodiment according to FIG. 2B (two-sided variant).
- FIGS. 6A, 6B show an arrangement for machine verifying a banknote 100 which has light entry surfaces 230 and light exit surfaces 210 of the security element 200 arranged side by side (corresponding to FIG. 2A), the material strand being fed into the paper in the embodiment of FIG Fig. 3 has been introduced by 90 ° rotated direction, namely from right to left or vice versa.
- the assembly includes an excitation and readout module 400 that extends across the bill.
- the longitudinally extending excitation and read-out module is equipped by a light source 410 with a multiplicity of LEDs 430 arranged one after the other in the longitudinal extent and with a detection element 420.
- the detection element has photodiodes 440 arranged one behind the other in the longitudinal extension, which can detect a light incidence.
- the banknote is traversed under this module in the direction P indicated by the arrow, so that the respectively juxtaposed pairs of light entry surfaces 230 and light exit surfaces 210 of the light guide structures 220 are traversed.
- light from the LED 430 falls via the light entry surfaces 230 into the light guide structures 220 and passes over the light exit surfaces 210 to the photodiodes 440.
- this module detects the presence of the light guiding structures in the banknote, their position on the front main surface 101 of the banknote being able to be determined by detecting the position of the banknote relative to the module and recognizing an optical guiding structure be determined by the addressed photodiode.
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Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013201945.9A DE102013201945A1 (de) | 2013-02-06 | 2013-02-06 | Sicherheitsmerkmal für ein Wert- oder Sicherheitsprodukt sowie Verfahren zum Herstellen des Sicherheitsmerkmals |
| PCT/EP2014/052107 WO2014122112A1 (de) | 2013-02-06 | 2014-02-04 | Sicherheitsmerkmal für ein wert- oder sicherheitsprodukt sowie verfahren zum herstellen des sicherheitsmerkmals |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2953799A1 true EP2953799A1 (de) | 2015-12-16 |
| EP2953799B1 EP2953799B1 (de) | 2018-01-10 |
Family
ID=50114339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP14704765.8A Active EP2953799B1 (de) | 2013-02-06 | 2014-02-04 | Sicherheitsmerkmal für ein wert- oder sicherheitsprodukt sowie verfahren zum herstellen des sicherheitsmerkmals |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2953799B1 (de) |
| DE (1) | DE102013201945A1 (de) |
| WO (1) | WO2014122112A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014015282A1 (de) * | 2014-10-16 | 2016-04-21 | Giesecke & Devrient Gmbh | Datenträger mit Lichtleiter |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3474027A (en) | 1967-06-19 | 1969-10-21 | Phillips Petroleum Co | Plural stages of sulfur removal |
| CH581359A5 (de) * | 1974-10-01 | 1976-10-29 | Grey Lab Establishment | |
| SE447516B (sv) * | 1985-03-25 | 1986-11-17 | Esselte Verdetryck Ab | Forfarande for att avlesa ett verdedokument, jemte verdedokument samt anordning for dylik avlesning |
| FR2583794B1 (fr) * | 1985-06-24 | 1988-09-23 | Arjomari Prioux | Document de securite utilisant des fibres optiques, procede de fabrication et procede d'authentification. |
| DD301115A7 (de) | 1988-06-17 | 1992-10-08 | Ministerrat F Staatssicherheit | Fälschungssicheres Papier |
| CH677905A5 (de) | 1989-02-20 | 1991-07-15 | Orell Fuessli Graph Betr Ag | |
| DE4142408A1 (de) * | 1991-12-20 | 1993-06-24 | Gao Ges Automation Org | Ausweiskarte sowie verfahren und vorrichtung zur herstellung derselben |
| US5881196A (en) * | 1996-10-24 | 1999-03-09 | Phillips; Stephen | Waveguide security device |
| DE19860093B4 (de) | 1998-12-23 | 2008-10-09 | Giesecke & Devrient Gmbh | Echtheitsmerkmalskombination für Wertdokumente |
| US7090913B2 (en) | 2003-05-16 | 2006-08-15 | Eastman Kodak Company | Security device with specular reflective layer |
| DE102005039320A1 (de) * | 2005-08-19 | 2007-02-22 | Giesecke & Devrient Gmbh | Kartenförmiger Datenträger |
| JP4882397B2 (ja) | 2006-02-01 | 2012-02-22 | 凸版印刷株式会社 | 表示体、及び表示装置 |
| DE102007035592B4 (de) | 2007-07-30 | 2023-05-04 | Osram Gmbh | Temperaturstabiler Leuchtstoff, Verwendung eines Leuchtstoffs und Verfahren zur Herstellung eines Leuchtstoffs |
| DE102008033716C5 (de) | 2008-07-14 | 2014-04-17 | Bundesdruckerei Gmbh | Wert- oder Sicherheitsdokument mit einer Lichtleitstruktur und lokalen Lichtaustrittsstellen an einer Oberseite sowie Verfahren zu dessen Herstellung |
-
2013
- 2013-02-06 DE DE102013201945.9A patent/DE102013201945A1/de not_active Withdrawn
-
2014
- 2014-02-04 EP EP14704765.8A patent/EP2953799B1/de active Active
- 2014-02-04 WO PCT/EP2014/052107 patent/WO2014122112A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014122112A1 (de) | 2014-08-14 |
| EP2953799B1 (de) | 2018-01-10 |
| DE102013201945A1 (de) | 2014-08-07 |
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