EP2920001A1 - Sicherheitsmerkmal für ein wert- und/oder sicherheitsprodukt, das wert- und/oder sicherheitsprodukt und verfahren zum herstellen des sicherheitsmerkmals - Google Patents
Sicherheitsmerkmal für ein wert- und/oder sicherheitsprodukt, das wert- und/oder sicherheitsprodukt und verfahren zum herstellen des sicherheitsmerkmalsInfo
- Publication number
- EP2920001A1 EP2920001A1 EP13791789.4A EP13791789A EP2920001A1 EP 2920001 A1 EP2920001 A1 EP 2920001A1 EP 13791789 A EP13791789 A EP 13791789A EP 2920001 A1 EP2920001 A1 EP 2920001A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fibers
- particles
- security
- security feature
- substrate
- 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
- B42D25/355—Security threads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/40—Manufacture
- B42D25/45—Associating two or more layers
- B42D25/465—Associating two or more layers using chemicals or adhesives
- B42D25/47—Associating two or more layers using chemicals or adhesives using adhesives
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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
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- B42D2033/20—
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- B42D2033/30—
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- B42D2033/32—
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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
- B42D25/378—Special inks
- B42D25/387—Special inks absorbing or reflecting ultraviolet light
Definitions
- Security feature for a value and / or security product the security and / or security product and method for producing the security feature
- the present invention relates to a security feature for a value and / or security product, for example for a security and / or security document or security element, and to a method for producing such a security feature.
- a security and / or security document may, for example, be a personal document, in particular a personal ID card, or a means of payment, in particular a banknote.
- Such documents are typically produced in standardized formats, for example in the ID 1, ID 2 or ID 3 format according to ISO 7810.
- the documents can basically consist of or contain an organic polymer or a ceramic material, paper, cardboard or metal. Cards and card-shaped components of book-type documents may preferably be made of laminated polymer films. To verify authenticity, these products have security features.
- security features used in the value and / 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 user and / or about an object to which the document is unambiguously assigned. Such information may be a face image (a photograph) of the user, his personal information such as name, birthday, place of birth, signature or a personal identifier such as a membership number.
- 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.
- DE 102 04 870 A1 discloses the attachment of a security feature by introducing fibers into a value carrier, for example a banknote or a passport. These Fibers can be made detectable by irradiation with light of a certain wavelength. The introduction of such fibers is known when scooping the paper of a banknote. The fibers form a security feature with randomly distributed features.
- DE 10 2009 040 747 B3 also specifies applying fluorescent mottling fibers, which at least partially consist of an adhesive, to a film or a document. These fibers also have a first and a second luminescent substance (biluminescence). The adhesive ensures that the mottled fibers can be more easily integrated into plastic-based documents.
- an adhesive strength is produced by the adhesive, so that the fibers are not fixed to a document during a subsequent lamination, but already when scattered onto the surface of the film.
- the glue also creates a permanent bond between the mottled fibers and the document so they can not be removed from the document.
- DE 10 2010 063 015 A1 discloses a device suitable for this purpose with a grit holder whose inner surface is at least partially uneven and which has at least one slot-shaped scattering opening.
- an object underlying the present invention is to find a security feature that encodes at least one property of the value and / or security product and / or a property of a person assigned to the product or of an item associated with the product.
- the present invention has the essential further object of providing a cost-effective, simple and quickly realizable security feature. The security feature is thus intended to increase the security level compared to conventional security and / or security documents or security elements.
- value and / or security product which may be a value and / or security document or a security element in particular, is used in the description and in the claims of the present application, this includes, for example, a passport, identity card, Driver's license, an access control card or other ID card, a vehicle registration document, vehicle registration document, visa, check, means of payment, in particular a banknote, check, bank, credit or cash card, loyalty card, health card, chip card, company identity card, proof of eligibility, membership card , Gift or shopping voucher, bill of lading or other proof of entitlement, tax stamp, postage stamp, ticket, token, token, adhesive label (for example for product security) or any other document.
- a product according to the invention can also be a security element which has the security feature according to the invention and which can be permanently connected to the document, for example a sticker, label or the like in order to provide the document with the security feature.
- the product may be, for example, a smart card.
- the security and / or value document may be in ID 1, ID 2, ID 3, or any other normalized or non-normalized format, such as a booklet form, such as a passport-like item.
- a value and / or security product is generally a laminate of a plurality of document layers, which have been connected in register under the influence of 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 which is suitable for lamination.
- security feature is used in the description and claims of the present application, it is to be understood as a feature that produces an optical impression, which can be detected by means of optical recognition methods, including with the human eye, by an (on or multi-colored, in particular luminescent, or black / gray / white pattern of particles of spreading material, in particular of fibers, very particularly preferably of mottled fibers, arranged in a relative arrangement to one another.
- the optical impression can either be directly perceived and evaluated by a viewer or detected by means of a device receiving electromagnetic radiation with spatial resolution and, in the latter case, perceived by a viewer or evaluated by means of a further device provided for this purpose.
- They may be particles of any shape, such as platelet, rod, spherical or irregularly shaped particles (granules), furthermore fibers and other elongate bodies characterized by a large ratio of their length to their diameter, and the like ,
- the particles typically have a size (a diameter of the granules or fibers) of 10 to 500 ⁇ , preferably 30 to 150 ⁇ and most preferably 40 to 100 ⁇ .
- a filament with, for example, 25 dtex (ISO 1 144) can be used, which is cut into filament pieces (fibers).
- the particles of the material to be spread can be in several types, which differ from each other, for example, by a color perceptible to the human eye, its shape, diameter, thickness, fiber length and the like.
- the color is based on the color impression, which is caused by the hue and / or brightness of the color when illuminating the material to be scattered with electromagnetic radiation.
- a security feature for a value and / or security product which is formed by at least one substrate surface of at least one substrate and there preferably fixed particles of a material to be spread.
- at least one surface field is formed on the at least one surface of the at least one substrate, in each of which a predetermined number n of particles is arranged.
- the surface field has a predetermined field area size, shape, length, and orientation on the substrate surface.
- the particles may differ from one another by their color, size, such as their diameter and / or length and / or thickness, their shape or the like. Particles of one type then have the same color and / or size and / or shape or the like, and a type may already exist if there is coincidence between the particles in only one of these parameters, but not other parameters. For example, red particles may belong to a type, regardless of their shape and size.
- the grit can be formed by particles of two types or of three types or of four types or of even more types.
- the object underlying the present invention is also achieved by a value and / or security product having at least one security feature according to the invention. At least one of these security features is located on at least one exterior of the security and / or security product, ie, on the outside of a document or security element, or is located in at least one interior tier in the security and / or security product. Preferably, the security feature is visually or at least mechanically detectable by means of optical methods from the outside.
- the object underlying the present invention is also achieved by a method for producing a security feature for a value and / or security product.
- This production process comprises the following process steps:
- At least one substrate is provided, each with at least one substrate surface.
- particles of a spreading material of at least one type are provided.
- the particles of the material to be spread are applied to the at least one substrate surface and preferably fixed there, wherein the particles of the material to be spread are applied to the at least one substrate surface in a respectively predetermined number n in at least one surface field.
- the number of particles in one of the surface fields each forms a value of this surface field.
- the particles may be fibers, most preferably mica fibers.
- the following statements in the description of the invention refer to fibers for the term "particles of a spreading material", although this is not intended to be limiting, but in each case also includes generalized other types of spreading material.
- the security feature is therefore formed according to the invention by fibers of one or more types which are applied in an exactly predetermined number n in at least one surface field on the at least one substrate surface, fibers of one type can be arranged in a surface field or in multiple surface fields and fibers of several types likewise in each case one surface field or in each case several surface fields.
- the respective surface field is assigned a value which corresponds to the number n of fibers in this surface field (field value).
- This field value can be used for coding information, in particular for coding one or more specific properties of the product itself and / or a person and / or an object to which the product is assigned.
- the field value may always be the same.
- Value and / or security products with different attributes of such a property for example different issuing sites of identity documents, can then have a different number of fibers arranged in the respective surface field, wherein in the given example each of the issuing sites is assigned a specific field value.
- the field value may encode any property of the product, person and / or object, such as the issuer of the product, the issuing country, the type of product, the year of issue, or the like. In each case a specific attribute of such a property can be assigned a predetermined field value.
- the product in order to be able to check the authenticity of the attribute determined via this field value, the product may additionally contain the attribute of the property in plain text or with another method in coded form.
- the fibers according to the present invention are contained within the at least one surface field in the predetermined number.
- the application and fixation of the fibers in the surface field on the at least one substrate surface does not preclude the addition of fibers outside the surface field on the substrate surface whose type is identical to or different from that of the fibers arranged within the surface field.
- similar fibers fibers of the same type
- the fibers located outside the surface field may be stochastically distributed in a conventional manner (in terms of their position and orientation).
- the surface field for a viewer is not readily apparent if he does not know its location on the at least one substrate surface.
- the fibers within the surface field are not present in a predetermined arrangement with respect to one another, but are also arranged stochastically within the surface field with respect to their position and orientation, and especially if the fiber density is within and outside the range Surface field is at least about the same size.
- the at least one surface field is preferably a self-contained surface on one of the substrate surfaces.
- the at least one surface patch may be square or rectangular in shape, circular, or have a more complex shape, such as a star, crest, or the like.
- the surface field can occupy the entire substrate surface, ie be identical to it. However, it preferably occupies only a part of the entire substrate surface.
- the position and the orientation of the surface field on the substrate surface are arbitrary.
- the surface field can in the middle or at one of the edges and there in the middle or not in the middle or in one of the corners and in these cases be placed on at least one edge of the substrate surface.
- the surface field may, for example, be formed by one or more strips running between two opposite edges of the substrate surface, wherein a plurality of strips may run parallel to one another or not parallel to one another.
- a plurality of surface areas can be located on a substrate surface or in each case also on a plurality of substrate surfaces of the same value and / or security product, for example two, three, four, five or even more surface fields. Or it can each be a surface field on multiple substrate surfaces of the product. Each of these surface fields may have the same field value, or the surface fields may have different field values. For example, if there are multiple surface fields, each can be one of the others
- Surface fields different property of the product, the person and / or the object encode, for example, in a motor vehicle letter a first surface field for the year of manufacture of the motor vehicle to which this letter is assigned, a second surface field for the motor vehicle manufacturer and a third surface field for the motor vehicle model. If multiple surface fields are present, the field values of these fields can also be combined with each other, for example, the approval date can be divided into three subdata, for example in day, month and year, by the field value in each case one of three surface fields coded. There are also other possible combinations that code for other product, person and / or item properties and their attributes.
- fibers are arranged on the at least one substrate surface in the respective surface field, which belong to at least two different fiber types, for example two, three, four, five or even more fiber types, of which in each case a predetermined number of fiber types in which at least one surface field is located.
- a surface field may have two or more field values which correspond to the respective number of fibers n i.
- the fiber type itself contains additional information that can serve to code a property of the product, the person, and / or the object.
- the fibers in the at least one surface field can furthermore be arranged in a predetermined arrangement (position, position) and / or orientation / orientation.
- a predetermined arrangement position, position
- orientation / orientation For example, one, two, three, four, five or six fibers may be arranged in a surface patch in a respective pattern in which the eyes located on a conventional six-sided dice are located. Since different fiber arrangements are possible for each number of fibers in a surface field, each fiber arrangement in a surface field represents further information which may also encode a property of the product, the person and / or the object.
- the fibers may be randomly positioned in the surface field, but with a given orientation, or with a random orientation, but with a given positioning in the surface field, or both in the positioning in the surface field and in orientation not stochastically but arranged in a predetermined pattern.
- Fibrous particles of the material to be spread can be designed differently in terms of their shape and geometry and thus form different types.
- the following parameters can determine the type: the length, the diameter and / or the cross-sectional shape.
- a typical fiber length is in a range of 2 to 25 mm, preferably about 6 mm.
- the diameter is, for example, in a range of 20 to 150 ⁇ , preferably 50 to 60 ⁇ .
- the cross-sectional shape is preferably circular or oval, but may also be formed, for example, star-shaped or otherwise.
- the surface area provided with the fibers is preferably formed in a single plane on or in the value and / or security product. But it is also possible that the surface fields are divided into several levels on or in the product. For example, a first part of a surface field, for example a first half, may be located in a first product plane and a second part in a second plane spaced from the first plane.
- a first portion of the predetermined number of fibers may be in the first portion of the surface panel in the first plane, and a second portion of the fibers may be located in the second portion of the surface panel in the second level.
- all of the first type fibers in the first part of the surface area in the first product level and all the fibers of the second type in the second part may be in the second level.
- the division of the surface field can be recognized at least with the aid of optical magnification means and can also be used as a security feature.
- a plurality of surface fields can also be arranged in each case on one of several product levels on / in the value and / or security product.
- the above design options of arranged in one or more surface fields fibers can also be used only to verify the authenticity of the value and / or security product.
- a determination of the number and optionally the geometric arrangement of the fibers in a surface field and / or a determination of their respective Be performed directly to the naked eye or by means of a device suitable for this purpose.
- the color of the fibers can be generated by illumination with electromagnetic radiation in the visible spectral range and / or by their excitation to luminescence, so that they appear to the human eye (one or more) colored or white or gray or black.
- the color of the fibers is caused in this case by spectrally uneven absorption of the irradiated electromagnetic radiation in the visible spectral range, so that only individual color components are remitted.
- fibers of different types can therefore absorb and remit different color components of the visible spectral range.
- the fibers of one type are each uniformly colored in their own right, ie they reflect light with substantially the same electromagnetic spectrum at all their surface locations. However, they can also produce different color impressions on different surface areas.
- the fibers may be formed of multiple strands of differently colored materials.
- At least one dye and / or at least one pigment are added to the fiber material, and / or the fibers are coated with at least one dye and / or at least one pigment.
- dyes and pigments it is possible to use all commercially available materials which are compatible with the fiber material and which survive the processing conditions for the production of the fibers and their introduction into and / or application to the fibers. Such dyes and pigments are also common for the production of printing inks.
- the fibers can be transparent, translucent or opaque.
- electromagnetic radiation not in the visible spectral range, but for example ultraviolet (UV) radiation, in particular UV-A radiation (380 to 315 nm) and / or UV-B radiation (315 to 280 nm), very particularly preferably UV-A radiation, for example with 365 nm, and / or optionally also UV-C radiation (280 to 200 nm), for example up to 200 nm, in particular 254 nm.
- UV radiation in particular UV-A radiation (380 to 315 nm) and / or UV-B radiation (315 to 280 nm), very particularly preferably UV-A radiation, for example with 365 nm, and / or optionally also UV-C radiation (280 to 200 nm), for example up to 200 nm, in particular 254 nm.
- the luminescence may in particular be photoluminescence in the form of fluorescence or phosphorescence with both Stokes and anti-Stokes shift.
- the excitation radiation can also be in another spectral range, for example in the visible or infrared (IR) range.
- fibers of different types absorb the excitation radiation and luminesce spectrally differently in the visible spectral range, so that different types of fibers produce different color impressions.
- the fibers of one type luminesce uniformly, ie they emit light at all points with substantially the same electromagnetic spectrum.
- fibers which are formed from different parts so that different luminescence emanates from the different parts and therefore these different parts produce different color impressions.
- the fibers can consist of several strands with different be formed different luminescent substances (see, for example, DE 10 2009 040 747 A1, mono- or bi-luminescent fibers).
- the fibers of each type are formed only from one material each, which causes a uniform color impression.
- fibers of the first type are excitable with UV-A radiation, but not with UV-B radiation
- fibers of the second type are excitable with UV-B radiation, but not with UV-A radiation.
- the one area with the fibers of the first type is visible under UV-A excitation, the other area under excitation with UV-B radiation.
- both types of fibers are identifiable simultaneously, such that a color-gradient structure can be visualized from the fibers of the first type to the fibers of the second type.
- fibers of the first type are excitable with UV-A and UV-B radiation and fibers of the second type can be excited with UV-B radiation, but not with UV-A radiation.
- the color transition under UV-B excitation immediately visible, under UV-A excitation, however, only the fibers of the first type are visible.
- At least one luminescent substance is added to the fiber material, and / or the fibers are coated with at least one luminescent substance.
- luminescent substances it is possible to use all commercially available materials which are compatible with the fiber material and which survive the processing conditions for producing the fibers and their introduction into and / or application to the fibers, namely both organic and inorganic luminescent substances, for example rhodamine 6G, fluorescein and rare earth-doped (luminophore) materials which form a host lattice for the luminophores, in particular substances doped with terbium, gadolinium, dysprosium, holmium, erbium, thulium, cerium and / or europium, for example oxides, oxinates, sulphides, Oxysulfides, oxynitrides, phosphates or vanadates, can be used.
- the pigments preferably have a particle size of less than 10 ⁇ , preferably less than 8 ⁇ and most preferably less than 6 ⁇ .
- the pigments formed herewith can additionally be coated with organic substances in order to increase the quantum yield of the luminescence.
- the fibers may either luminesce exclusively and be colorless or nearly colorless to the human eye when illuminated in the visible spectral range, or appear colored to the human eye only when illuminated in the visible spectral range, but have no luminescence when illuminated by electromagnetic radiation outside the visible spectral range, or They can appear colored as well as additionally luminesce for the human eye when illuminated in the visible spectral range.
- the fibers may be at least partially formed by an adhesive, for example, the fibers at least partially Au on the outside of an adhesive.
- the adhesive should be at least partially exposed on the outside of the fibers, so that the fibers are fixed there when hitting the at least one substrate.
- the glue can form a fiber part.
- the fibers may be formed of a plurality of coaxial strands, at least one of which is formed by the adhesive.
- the adhesive may therefore be located next to strands of a different material on the outside of the fibers Au.
- the glue can completely surround a fiber core, something like a coat.
- the adhesive material may contain at least one of the substances responsible for the color of the fibers when illuminated in the visible spectral range and / or for the luminescence of the fiber.
- the fibers can be fixed in the at least one surface field, so that their predetermined number and possibly predetermined arrangement and / or orientation in the field is preserved during the production process for the value and / or security document.
- the adhesive is a hot melt adhesive, ie an adhesive which melts when heated.
- the adhesive may also be a reactive adhesive, for example an acrylate adhesive.
- the hotmelt adhesive has, for example, a softening temperature of 50 to 200 ° C., preferably of 80 to 120 ° C.
- the adhesive is preferably not tacky at room temperature.
- the fibers can be well isolated at room temperature.
- the hotmelt adhesive can be formed, for example, from polyamide or from a polyamide copolymer.
- the adhesive may be formed of polyamide 12, polyamide 6 or polyamide 6.6.
- the adhesive is formed of polyamide 6 or a copolymer of polyamide.
- This glue can encase a core of the fibers.
- This core may for example be formed from polyamide 6.6.
- polyamide polyethylene, polyethylene terephthalate, polyvinyl chloride, cellulose or their deodorants may also be used. such as viscose or cellophane.
- Polyamide is preferred.
- the at least one substrate surface in another preferred development of the present invention can also be provided with an adhesive, for example with a hot-melt adhesive or with a reactive adhesive.
- the fibers are applied to the surfaces of the substrate provided with the adhesive and fixed there, for example by heating.
- a metering device for the fibers.
- this metering device By means of this metering device several individual fibers are placed one after the other or simultaneously in the surface field. During or immediately after, the fibers are fixed on the substrate surface. To place individual fibers, these are first separated.
- a separating device can be used.
- fibrous fibers can be separated from the strand by means of the separating device and placed on the surface at the same time as the separation or immediately after separation.
- the separating device may have a cutting device for separating individual fibers from the strand.
- the fibers are sequentially separated from the strand.
- a preferred method of severing is to cut each strand section from the strand and place these sections as fibers on the surface.
- the strand may be wound up or may be produced immediately prior to the separation of the individual strand sections, for example in an extrusion or other strand formation process.
- a fiber may be sheared from the strand (s) after extruding a strand length corresponding to a fiber length from an extrusion die of an extrusion device (with one or more spinnerets) or from another strand forming device.
- the separated part forms a fiber, which is conveyed for example by means of a manipulator in the surface field and placed there, so that it can be fixed there.
- the spinneret of the extrusion device can also be arranged in the immediate vicinity of the surface field, so that the formed fiber strand already reaches the substrate surface during its formation. After contact with the surface or shortly before the fiber strand is then separated, so that the fiber reaches the surface.
- the fiber material is typically formed by a dielectric, its surface tension can be controlled by a separately generated electrostatic surface charge on the fibers.
- the manipulator or stranding device In order to place the fibers on the substrate surface, the manipulator or stranding device is moved relative to the substrate surface in order to be able to place the fibers at specific locations on the surface in a targeted manner.
- the fibers then adhere there, for example by means of the adhesive or by means of a surface charge of the fibers with respect to the substrate surface, suitably adjusted for this purpose.
- the substrate surface may be heated, so that the adhesive of the fibers at least partially melts on contact with the surface, so that an adhesion of the fiber to the surface forms.
- a filament suitable for producing the fibers may be provided, and a respective fiber may be separated from the filament, for example, cut off, so as to be applied to the surface of the substrate in the surface field.
- the fibers are fixed during or after application to the substrate surface.
- hot melt fixable fibers they are fixed by introducing heat and in the case of fixable by means of a reactive adhesive fibers by irradiation of electromagnetic radiation, such as UV radiation.
- fixable by means of a hot melt adhesive fibers these can be fixed for example by means of a hot press roll on the surface.
- the substrate surface may also be sticky.
- the substrate, on the at least one surface of which the fibers are applied and fixed there, can be gathered together with further substrates, for example further polymer films or other film-like materials, such as paper, as layers to form a stack, so that the surface provided with the fibers / n outside and / or arranged inside is / are.
- further substrates for example further polymer films or other film-like materials, such as paper
- the latter is advantageous because a forgery or falsification of the product Then it is only extremely difficult, because the fiber plane / s would / n have to be exposed for this purpose. If the stack is welded to a monolithic laminate by the application of heat and pressure, it is preferred that the fibers also fuse with the surrounding material, thereby further complicating delamination.
- the security feature is located on the outside of the laminate after lamination, it can be protected against tampering by subsequent coating with a protective varnish or protective film.
- this protective lacquer or protective film serves to protect the product against mechanical damage (scratches) during use.
- the lamination takes place at a higher temperature, for example at 220 ' ⁇ .
- the polymer films typically have a thickness of from 25 to 150 ⁇ m, preferably from 50 to 100 ⁇ m.
- the laminates produced can, for example, represent card-shaped objects or be singulated into card-shaped individual uses. In principle, the laminate can also be a construction for a multilayer banknote.
- At least one substrate surface covered with the fibers is located in the value and / or security product
- at least those parts of the product which are located between the at least one substrate surface and the fibers by the viewer are preferably transparent or at least translucent and more preferred colorless or optionally only slightly colored in order to be able to recognize the at least one surface area with the fibers.
- product material located beyond the at least one substrate surface on which the at least one surface field is arranged may also be opaque and optionally colored. Of course, this outlying product material may of course also be transparent or translucent and colorless.
- the valuable and / or security product may be formed from a polymer selected from a group comprising polycarbonate (PC), in particular bisphenol A polycarbonate, polyethylene terephthalate (PET), derivatives thereof, such as glycol modified PET (PETG), Polyethylene naphthalate (PEN), polyvinyl chloride (PVC), polyvinyl butyral (PVB), polymethylmethacrylate (PMMA), polyimide (PI), polyvinyl alcohol (PVA), polystyrene (PS), polyvinylphenol (PVP), polypropylene (PP), polyethylene (PE), thermoplastic elastomers (TPE), especially thermoplastic polyurethane (TPU), acrylonitrile-butadiene Styrene copolymer (ABS) and its derivatives, and / or paper.
- PC polycarbonate
- PET polyethylene terephthalate
- PEN glycol modified PET
- PEN Polyethylene naphthalate
- PVC polyvinyl chloride
- PVB poly
- the product can also be made from several of these materials. It preferably consists of PC or PC / TPU / PC.
- the polymers may be either unfilled or filled. In the latter case they are preferably transparent or translucent. If the polymers are filled, they are opaque.
- the above information relates both to films to be bonded together and to liquid formulations applied to a precursor, such as a resist.
- the product is preferably prepared from 3 to 12, preferably 4 to 10, films.
- a laminate formed in this way can finally be coated on one or both sides with a protective lacquer. Overlay layers formed in this way protect a security feature arranged underneath and / or give the document the required abrasion resistance.
- the security feature is preferably formed on at least one of the inner layers.
- the at least one substrate, on the at least one surface of which the at least one surface field is located, is thus formed in each case by a product layer or by the product itself.
- a precursor for the valuable and / or security product for example a blank which does not yet have all the product layers, but most of the security features of the document, can also be used as the substrate.
- the value and / or security product according to the invention can have, in addition to the security feature according to the invention, at least one further security feature which is either individualizing or not individualizing.
- Other security features include guilloches, watermarks, embossing prints, a security thread, microfilm, tipping pictures, holograms, optically variable pigments, luminescent colors, transmitted light register and the like.
- the document may also comprise electronic components, for example an RFID circuit with antenna and RFID microchip, electronic display elements, LEDs, touch-sensitive sensors and the like. The electronic components can for example be hidden between two opaque layers of the document.
- FIG. 1 shows an inventive value and / or security product in the form of an identity card (ID card) with the security feature according to the invention;
- ID card identity card
- FIG. 1 shows an inventive value and / or security product in the form of an identity card (ID card) with the security feature according to the invention;
- A schematic perspective view when illuminated with visible light;
- B schematic perspective view when illuminated with UV light;
- Fig. 4 shows different examples of surface fields of different shape
- Fig. 5 shows a device for applying and fixing fibers on a substrate, which is conveyed on a conveyor belt, in a schematic side view
- 6 shows a metering device for applying mottled fibers in a surface field to a substrate surface in a schematic perspective view
- Fig. 7 shows a section through a mottled fiber with core and mantle.
- the ID card 100 has a front side 101 and a rear side (not shown) (FIGS. 1A, 1B).
- the front side has multiple fields 102, 103, 104 of personal data (for example, the facial image, name, date of birth of the card holder, and a personal number) identifying the card holder.
- This data is internally generated on an inner surface 310 of a substrate 300 in the card (Fig. 2), i. For example, under a protective coating to prevent manipulation of this card and to avoid mechanical damage to the card.
- this card 100 has a security feature 200 according to the invention.
- This feature is formed by a surface panel 210 in which mica fibers 220 are made of polyamide.
- the mottled fibers have a diameter of 40 ⁇ m and a length of 5 mm.
- the mottled fibers are not visible when illuminated with electromagnetic radiation in the visible spectral range (VIS) (FIG. 1A). At most, by a slight intrinsic color and / or by light scattering, these fibers can also be under normal lighting be perceived.
- the field itself is not visible because its outlines are not marked. In Figs. 1A, 1B, the field is marked for illustrative purposes only.
- the mottled fibers can be made visible in the surface field (FIG. 1B).
- the mottled fibers contain one or more luminescent substances which can be excited by UV radiation and emit luminescence radiation in the visible spectral range. For example, if it is a europium-doped oxysulfide, the excited mottled fibers luminesce red.
- the mottled fibers are fixed for example by means of a hot melt adhesive on the card surface.
- the fibers consist in part of a sheath 221 which is formed from a hotmelt adhesive of polyamide 6 and which encloses a core 222 made of polyamide 6.6 (FIG. 7).
- the luminescent substances are contained for example in the enclosure.
- FIG. 2 shows a special embodiment of the security feature 200 according to the invention on a substrate 300.
- mottled fibers may also be excitable for luminescence by means of UV radiation, for example.
- the mottled fibers can be provided with a terbium-doped oxysulfide. The luminescent substance luminesces green upon irradiation with the UV light.
- the mottled fibers 230 of the same type ie with the same luminescent substance and of the same size, are scattered and fixed onto the substrate surface 310, these mottled fibers likewise being randomly distributed on the surface 310. Since the surface field on the substrate surface 310 is not marked, it is not recognizable by a viewer. Even when irradiated with UV light, with which the mica fibers 220 located within the surface field are made visible, their position and size are imperceptible because of the entire surface application of mottled fibers. Therefore, the security feature 200 is not detectable by a third party. This holds true as long as the size and location of the surface field are unknown. On the other hand, if the position of the surface field is known, the number n of mottled fibers present in the field finds, be determined and thus the authenticity of this security feature having ID card 100 are verified.
- the document may be an identification document, for example the ID card of FIG. 1.
- the field value resulting from the number n of mottled fibers in the surface field may in this case code, for example, for the issuing location of the ID card.
- this information may be located elsewhere on the ID card so that the information encoded with the field value may be compared with the information located elsewhere to verify the authenticity of the ID card.
- Fig. 3 examples of arrangements of mottled fibers 220, 220 'are shown in a surface panel 210 located on a surface 310 of a substrate 300:
- FIG. 3A shows eleven mottling fibers arranged in three rows of four, three or four mottled fibers. The mottled fibers are aligned parallel to each other and standing vertically.
- Fig. 3B also shows eleven mottled fibers arranged in three rows of four, three and four mottled fibers, respectively. The mottled fibers are alternately vertically or horizontally oriented in the upper and lower rows and exclusively horizontal in the middle row.
- Fig. 3C also shows eleven mottled fibers arranged in three rows of three, five and three mottled fibers, respectively. The mottled fibers are in turn aligned parallel to each other and standing vertically.
- the mordant fibers of the first type 220 may have a luminescent green luminescent substance and the mottle fibers of the second type 220 'may be red luminescent. contain the luminescent substance.
- 3D shows a regular arrangement of these mottled fibers, each with three fibers in three rows and alternating arrangement of the two types and alternating orientation in each case 45 ° to the vertical or horizontal inclined orientation.
- FIG. 3E shows a random arrangement with regard to the position and the orientation of the mottling fibers of the two types.
- 3F again shows a regular arrangement of the mottled fibers of the two types, each with three mottled fibers in three rows and alternating arrangement of the two types, but each with parallel alignment with each other.
- FIG. 4 shows further examples of arrangements of mottled fibers 220 in a surface field 210 on the surface 310 of a substrate 300:
- Fig. 4A shows a circular
- Fig. 4B is a rectangular
- Fig. 4C shows a star-shaped surface field.
- FIG. 4D shows a surface field 210 which is distributed on two surfaces 310, 310 'of a respective substrate 300, 300', which are spaced apart from one another, for example two upper sides of mutually adjacent polymer films.
- a first part 21 1 of the surface field 210 is located on the first substrate surface 310 and a second part 212 of the surface field 210 on the second substrate surface 310 '. Both parts together form the surface field 210.
- mottled fibers 220, 220 '(n 7) in a random distribution with respect to their position, but not with respect to their orientation, since all the mottled fibers are arranged parallel to one another.
- r ⁇ 4
- a substrate 300 for example a polymer film piece 300 of polycarbonate with a thickness of 80 ⁇ m, which for example has a format of 10 cm ⁇ 25 cm
- the mottled fibers have, for example, on the outside a sheath 221 made of a hotmelt adhesive.
- FIG. 1 To ensure that the mottled fibers to be applied initially adhere to the polymer film piece when they are applied, it is preheated.
- a heating device 600 for example an IR emitter, is provided, under which the polymer film piece is arranged for a short time.
- the polymer film piece is then moved with the conveyor belt under the metering device and stopped there, so that all mottled fibers can be applied in the surface field 210 on the polymer film surface.
- the polymer film is conveyed by means of the conveyor belt so that it passes through a fixing device 700.
- the fixing device is formed, for example, by a hot press roll with which the hotmelt adhesive of the mottled fibers is melted and the fibers are fixed on the polymer film surface.
- the metering device 500 is shown during the application of a mica fiber 220 into a surface field 210 on the polymer surface 310.
- the metering device is an extrusion head with several spinnerets, from which the material of the mottled fibers to be formed emerges in a molten state.
- the extrusion head comprises a plurality of spinnerets for the sheath material (polyamide 6) disposed about a central spinneret for the core material (polyamide 6.6) (not shown).
- a fiber material is formed, which has approximately the fiber structure shown in Fig. 7.
- the molten material is pressed down in a filament 225 and cooled, so that the fiber mass passes from the molten to the solid state.
- the formed fiber filament reaches the polymer film surface 310 during the formation process and deposits thereon with its filament end.
- the cladding 221 of the filament partially softens and thus slightly adheres to the surface at.
- the down-hanging and partially already adherent filament portion is cut off by means of a separator 510 located a short distance below the extrusion head so that the filament portion can be laid onto the polymer film surface as a newly formed fiber 220.
- the extrusion head 500 is also movable parallel to the surface in the x and y directions R h1 , R h2 . This allows different positions within the surface field to be approached.
- this mobility of the head also serves to move the head during the mica fiber formation process, ie, during deposition of the filament portion on the surface, so that a given orientation of the fibers in the surface field can be realized.
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Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102012220703.1A DE102012220703B4 (de) | 2012-11-13 | 2012-11-13 | Sicherheitsmerkmal für ein Wert- und/oder Sicherheitsprodukt, das Wert- und/oder Sicherheitsprodukt und Verfahren zum Herstellen des Sicherheitsmerkmals |
| PCT/EP2013/073568 WO2014076056A1 (de) | 2012-11-13 | 2013-11-12 | Sicherheitsmerkmal für ein wert- und/oder sicherheitsprodukt, das wert- und/oder sicherheitsprodukt und verfahren zum herstellen des sicherheitsmerkmals |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2920001A1 true EP2920001A1 (de) | 2015-09-23 |
| EP2920001B1 EP2920001B1 (de) | 2017-03-01 |
Family
ID=49584719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP13791789.4A Active EP2920001B1 (de) | 2012-11-13 | 2013-11-12 | Gesamtheit von mehreren exemplaren eines wert- und/oder sicherheitsproduktes und verfahren zum herstellen eines sicherheitsmerkmals |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2920001B1 (de) |
| DE (1) | DE102012220703B4 (de) |
| WO (1) | WO2014076056A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112406354A (zh) * | 2017-11-27 | 2021-02-26 | 吴宁飞 | 新型防伪材料在商品防伪及货币防伪、银行卡等上的应用 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10204870B4 (de) * | 2002-02-06 | 2018-11-15 | Infineon Technologies Ag | Verfahren zur Fälschungssicherung eines Wertträgers, Wertträger und Verfahren zur Überprüfung seiner Echtheit |
| DE10324630A1 (de) | 2003-05-28 | 2004-12-23 | Giesecke & Devrient Gmbh | Sicherheitspapier |
| DE102009040747B3 (de) * | 2009-09-08 | 2011-07-21 | Bundesdruckerei GmbH, 10969 | Bilumineszente Melierfasern, eine diese aufweisende Folie, Dokument mit diesen sowie Verfahren zu ihrer Herstellung und ein Verfahren zur Herstellung eines Dokuments mit diesen |
| DE102010051809A1 (de) * | 2009-12-17 | 2011-06-22 | Heidelberger Druckmaschinen AG, 69115 | Verfahren zum Erzeugen eines Sicherheitsmerkmals auf einem Druck- oder Verpackungsprodukt |
| DE102010063015B4 (de) * | 2010-12-14 | 2014-02-27 | Bundesdruckerei Gmbh | Vorrichtung und Verfahren zum Aufbringen von Melierfasern auf ein Substrat |
-
2012
- 2012-11-13 DE DE102012220703.1A patent/DE102012220703B4/de not_active Expired - Fee Related
-
2013
- 2013-11-12 WO PCT/EP2013/073568 patent/WO2014076056A1/de not_active Ceased
- 2013-11-12 EP EP13791789.4A patent/EP2920001B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| DE102012220703B4 (de) | 2017-11-02 |
| WO2014076056A1 (de) | 2014-05-22 |
| DE102012220703A1 (de) | 2014-05-15 |
| EP2920001B1 (de) | 2017-03-01 |
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