EP0374763A2 - Security elements in the form of threads or strips to be embedded in security documents, and method of producing and testing same - Google Patents

Security elements in the form of threads or strips to be embedded in security documents, and method of producing and testing same Download PDF

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Publication number
EP0374763A2
EP0374763A2 EP89123254A EP89123254A EP0374763A2 EP 0374763 A2 EP0374763 A2 EP 0374763A2 EP 89123254 A EP89123254 A EP 89123254A EP 89123254 A EP89123254 A EP 89123254A EP 0374763 A2 EP0374763 A2 EP 0374763A2
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EP
European Patent Office
Prior art keywords
security
security element
film
thread
carrier
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.)
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Application number
EP89123254A
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German (de)
French (fr)
Other versions
EP0374763B1 (en
EP0374763A3 (en
Inventor
Wittich Kaule
Wilhelm Ilgmann
Gerhard Schwenk
Gerhard Stenzel
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GAO Gesellschaft fuer Automation und Organisation mbH
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GAO Gesellschaft fuer Automation und Organisation mbH
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Publication of EP0374763A3 publication Critical patent/EP0374763A3/en
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
    • D21H21/44—Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods
    • D21H21/48—Elements suited for physical verification, e.g. by irradiation
    • 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
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/02—Testing electrical properties of the materials thereof
    • G07D7/026—Testing electrical properties of the materials thereof using capacitive sensors
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/20—Testing patterns thereon
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/916—Fraud or tamper detecting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24851—Intermediate layer is discontinuous or differential
    • Y10T428/24868—Translucent outer layer
    • Y10T428/24876—Intermediate layer contains particulate material [e.g., pigment, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24917—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including metal layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/256—Heavy metal or aluminum or compound thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31678—Of metal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31678—Of metal
    • Y10T428/31681—Next to polyester, polyamide or polyimide [e.g., alkyd, glue, or nylon, etc.]

Definitions

  • the invention relates to a security element in the form of a thread or tape for embedding in a security document, consisting of a carrier film and at least one marking substance applied thereon, e.g. B. in the form of a coating that is used for visual and / or mechanical authenticity detection and methods for manufacturing and testing the same.
  • Such a security thread is e.g. B. from DE-OS 27 54 267, wherein a carrier film made of polyester or cellulose is coated with different materials.
  • a carrier film made of polyester or cellulose is coated with different materials.
  • visually and / or machine-readable authenticity features serve z.
  • the layer materials susceptible to mechanical abrasion and atmospheric influences such as. B. the metal coating, usually the outside of the thread.
  • the metallic coating can be easily destroyed by mechanical loads during the production of the thread, and even in later use it is often the case that the metallic coating loses its originally high-gloss property and becomes matt over time. In serious cases, the metallic layer can also be completely interrupted, as a result of which the security thread loses not only its reflective property but also its mechanically verifiable electrical conductivity over the entire length of the thread.
  • the structure is mostly asymmetrical and this asymmetry leads to the curl of the thread and the formation of garlands.
  • the thread can therefore not be embedded in the fiber layer of a forming paper layer with the same flatness.
  • the areas of the paper web in which the security thread does not come to lie in the plane of the paper layer must then be separated out as unusable. This committee makes paper production more expensive.
  • the invention is based on the object of creating a security element which, while avoiding the above-mentioned. Disadvantages can be easily produced and embedded in a security document.
  • composition of the security thread according to the invention from two foils pretreated in the same way gives the thread a completely symmetrical structure.
  • the two carrier films are preferably obtained from the same film, in which a larger film web is first provided, the corresponding coatings are provided in a coating system, the film web is then cut into two longitudinal webs and these longitudinal webs are overlaid and connected to one another in the form according to the invention. This also avoids fluctuations that could arise from the production of the film webs in two different production processes.
  • the security thread which is pulled off a roll during paper production and is guided to the paper screen at a predetermined position in the pulp, maintains its position via this path, in which it is guided freely, without rotating about its longitudinal axis.
  • the reject which arises in the case of threads with an asymmetrical structure due to the flatness of the thread being flat in the paper plane can thereby be avoided.
  • each layer containing a marking substance is present twice.
  • the absence of a marking substance in one layer does not lead to a total loss of the authenticity feature, unless the unlikely event occurs that the substance is also missing at the same location in the opposite layer.
  • the amount of substance is only half as large, but this reduction in the amount can easily be compensated for by appropriate design of the detection apparatus.
  • the two carrier foils are generally connected to one another by means of an adhesive layer, suitable adhesives being selected depending on the circumstances.
  • an adhesive material is preferably used which is permeated with electrically conductive pigments. These electrically conductive pigments electrically connect the two metal layers to one another. If there is a break in the metal layer during the manufacture of the film or when the security thread is embedded in the paper, the adhesive layer serves as a bridging element to maintain the electrical connection over the entire length of the security element.
  • resistant coatings such as, for example, B. a layer of paint or a layer of paint
  • plastic surfaces can usually be printed better than z. B. metallic surfaces.
  • the internal coatings can be made thin, since they are now adequately protected against mechanical loads by the outer plastic films.
  • the metallic layer is first applied during the production of the carrier foils and the magnetic layer is only applied to this metallic layer.
  • the metallic reflective layer thus covers the magnetic layer, which has a black or brown intrinsic color, after the two foils have been superimposed.
  • This thread can then also be stored in the printed image area of the security document, since the thread cannot be recognized or can only be recognized as a faintly bright area due to its reflecting surface in incident light and thus does not disturb the visual impression of the printed image. Only when viewed in transmitted light can this thread be recognized as a dark stripe in the paper.
  • the security threads can also be embedded in the document by methods known per se so that they appear on the surface in places. This is a particular advantage of the invention. Due to the exposed position of the security thread on the document surface, it is exposed to special mechanical loads due to daily use. In the security thread according to the invention, however, plastic layers which are resistant to mechanical and chemical influences, such as, for. B. polyester films, the outer layers that protect the sensitive feature layers. In spite of its exposed position, the thread shows no signs of wear.
  • the double presence of a marking substance can advantageously be used for authenticity testing in the case of the metallic or electrically conductive coating.
  • the carrier films are the two outer, transparent plastic films 2, 3, preferably made of polyester. Each of these plastic films is provided on its inner side with a metal coating 4, 5. For this purpose, the films are coated with an aluminum, nickel or even chrome layer by means of suitable coating processes (vapor deposition, spraying, sputtering, etc.). The layer thickness is usually far below 1 ⁇ . After their coating, these two carrier foils are connected via an adhesive layer 6. Suitable adhesives are e.g. B. laminating glue, which are activated by heating over a certain temperature range, or polymerisation glue, which harden when heated and / or UV irradiated.
  • suitable adhesives are e.g. B. laminating glue, which are activated by heating over a certain temperature range, or polymerisation glue, which harden when heated and / or UV irradiated.
  • this thread Due to its metallic coating, this thread has highly reflective properties and is therefore only recognizable as a dark stripe in transmitted light, since when viewed in incident light, the light reflected by the thread is scattered through the paper layer above it. Thanks to the outer polyester films, the thread is resistant to a large number of chemical solvents and also fulfills the required conditions such as high flexibility and tear resistance due to the excellent mechanical properties of polyester.
  • FIG. 2 shows a thread in which - again between two polyester films 8, 9 - the layer materials used for authenticity detection are embedded.
  • Each of these foils was first covered with a metallic one Coating 10, 11 provided and a magnetic layer 12, 13 is applied to this metallic coating.
  • Suitable magnetic materials or coating materials are known from DE-PS 16 69 245.
  • both of the carrier foils are overlaid with their coated side facing inwards and connected to one another with the aid of an adhesive layer 14.
  • the adhesive layer has to be coordinated with a good connection of the magnetic layers inside.
  • the films can also be coated on both sides. In this case, at least one of the layer materials then comes to the outside. Materials that withstand the chemical and mechanical loads must therefore be selected for these outer layers 15. It can be z. B. is a full-surface paint coating that has a certain color or luminescent properties. However, a pattern or alphanumeric characters can also be partially printed on, which can be read directly or with the aid of appropriate magnification devices. Since the threads usually have a width of 0.5 mm to max. 1.5 mm are required for printing the thread with characters of this size, complex printing techniques and corresponding devices, whereby the thread gains additional security against counterfeiting.
  • the two carrier foils from which the security thread according to the invention is composed are preferably obtained from a single foil which is provided with the desired layers on one or both sides in advance.
  • the side of the film that carries the later internal coatings is additionally provided with an adhesive surface.
  • these can be filled by a roller laminating system known per se (FIG. 3).
  • the two foils After passing through two press rolls 23 and subsequent cooling, the two foils are firmly connected to one another and can be cut into individual strips of the desired width in a corresponding cutting system.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Credit Cards Or The Like (AREA)
  • Paper (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

A security element which can be embedded in a security document, in particular a commercial paper, in the form of a thread or strip is composed of two carrier foils, each of these carrier foils carrying each of the marking substances serving for detecting the authenticity. The two carrier foils are composed in such a way that the marking substances, which are to be protected from mechanical abrasion and other external influences, come to rest on the inside. The thread offers not only a special protection for the marking substances, but, due to its symmetrical construction, it can also be embedded in the paper substance easily and without showing a tendency to roll. <IMAGE>

Description

Die Erfindung betrifft ein Sicherheitselement in Form eines Fadens oder Bandes zur Einbettung in ein Sicher­heitsdokument, bestehend aus einer Trägerfolie und min­destens einer darauf aufgebrachten Markierungssubstanz, z. B. in Form einer Beschichtung, die der visuellen und/oder maschinellen Echtheitserkennung dient sowie Verfahren zur Herstellung und Prüfung desselben.The invention relates to a security element in the form of a thread or tape for embedding in a security document, consisting of a carrier film and at least one marking substance applied thereon, e.g. B. in the form of a coating that is used for visual and / or mechanical authenticity detection and methods for manufacturing and testing the same.

Es ist eine zur Absicherung von Sicherheitsdokumenten bekannte Maßnahme, in diese Dokumente Sicherheitselemente einzubetten, die entweder besondere maschinell nachweis­bare physikalische Eigenschaften aufweisen oder auch von ihrem visuellen Aussehen her so gestaltet sind, daß sie als Echtheitsmerkmal für das Sicherheitsdokument dienen können. Derartige Sicherheitselemente sind z. B. Fäden oder Bänder, die im Rahmen der Papierherstellung in die sich noch bildende Papierlage direkt eingebettet werden.It is a known measure for securing security documents to embed security elements in these documents which either have special mechanically detectable physical properties or are also designed in terms of their visual appearance in such a way that they can serve as an authenticity feature for the security document. Such security elements are such. B. threads or tapes that are embedded directly in the paper layer still forming in the context of paper production.

Ein derartiger Sicherheitsfaden ist z. B. aus der DE-OS 27 54 267 bekannt, wobei eine Trägerfolie aus Poly­ester oder Zellulose mit verschiedenen Materialien be­schichtet wird. Als visuell und/oder maschinell lesbare Echtheitsmerkmale dienen z. B. eine Aluminiumbedampfung, eine Magnetbeschichtung, eine Beschichtung mit Röntgen­strahl absorbierendem Material und/oder ein lumineszie­rendes Material.Such a security thread is e.g. B. from DE-OS 27 54 267, wherein a carrier film made of polyester or cellulose is coated with different materials. As visually and / or machine-readable authenticity features serve z. B. an aluminum vapor deposition, a magnetic coating, a coating with X-ray absorbing material and / or a luminescent material.

In dieser Schrift werden verschiedene Aufbauten derarti­ger Sicherheitsfäden aufgezeigt, die sich in der Schicht­anordnung und/oder den dabei verwendeten Materialien un­terscheiden. Alle dort gezeigten Beispiele haben aber zumindest einen, meist sogar mehrere der nachfolgend auf­gezeigten Nachteile.In this document, various structures of such security threads are shown, which differ in the layer arrangement and / or the materials used. However, all the examples shown there have at least one, usually even several of the disadvantages shown below.

So bilden z. B. die gegen mechanischen Abrieb und atmo­sphärische Einflüsse anfälligen Schichtmaterialien, wie z. B. die Metallbeschichtung, meist die Außenseite des Fadens. Durch mechanische Belastungen bei der Herstellung des Fadens kann die metallische Beschichtung aber leicht zerstört werden und auch im späteren Gebrauch ist es häu­fig der Fall, daß die metallische Beschichtung seine ur­sprünglich hochglänzende Eigenschaft verliert und mit der Zeit matt wird. In gravierenden Fällen kann es auch zu einer vollständigen Unterbrechung der metallischen Schicht kommen, wodurch der Sicherheitsfaden nicht nur seine reflektierende Eigenschaft, sondern auch seine ma­schinell nachprüfbare elektrische Leitfähigkeit über die gesamte Fadenlänge verliert.So z. B. the layer materials susceptible to mechanical abrasion and atmospheric influences, such as. B. the metal coating, usually the outside of the thread. However, the metallic coating can be easily destroyed by mechanical loads during the production of the thread, and even in later use it is often the case that the metallic coating loses its originally high-gloss property and becomes matt over time. In serious cases, the metallic layer can also be completely interrupted, as a result of which the security thread loses not only its reflective property but also its mechanically verifiable electrical conductivity over the entire length of the thread.

Des weiteren ist der Aufbau meist asymmetrisch und diese Asymmetrie führt zur Rollneigung des Fadens und zur Girlandenbildung. Der Faden läßt sich damit nicht pro­blemlos in stets gleicher Planlage in die Faserschicht einer sich formierenden Papierlage einbetten. Die Be­reiche der Papierbahn, in denen der Sicherheitsfaden nicht in der Ebene der Papierlage zu liegen kommt, müssen anschließend als unbrauchbar ausgesondert werden. Durch diesen Ausschuß kommt es zu einer Verteuerung der Pa­pierherstellung.Furthermore, the structure is mostly asymmetrical and this asymmetry leads to the curl of the thread and the formation of garlands. The thread can therefore not be embedded in the fiber layer of a forming paper layer with the same flatness. The areas of the paper web in which the security thread does not come to lie in the plane of the paper layer must then be separated out as unusable. This committee makes paper production more expensive.

Schließlich sind Fabrikationsfehler im Beschichtungs­vorgang nicht auszuschließen. So kann es z. B. zu starken Schichtdickenschwankungen und auch zu vollständigen Un­terbrechungen in der Beschichtung kommen. Derartige Un­terbrechungen in einer z. B. metallischen Schicht führen aber zur Unterbrechung der elektrischen Leitfähigkeit. Auch diese Sicherheitsdokumente müssen vorab als Ausschuß ausgesondert werden, da aufgrund dieser Unregelmäßigkei­ten die Echtheitsfeststellung nicht mehr eindeutig ist.Finally, manufacturing errors in the coating process cannot be ruled out. So it can e.g. B. come to strong fluctuations in layer thickness and also complete interruptions in the coating. Such interruptions in a z. B. metallic layer but lead to the interruption of electrical conductivity. These security documents must also be discarded in advance as a committee, since due to these irregularities the authenticity check is no longer clear.

Der Erfindung liegt nun die Aufgabe zugrunde, ein Si­cherheitselement zu schaffen, das unter Vermeidung der o.g. Nachteile in einfacher Weise herstellbar und in ein Sicherheitsdokument einbettbar ist.The invention is based on the object of creating a security element which, while avoiding the above-mentioned. Disadvantages can be easily produced and embedded in a security document.

Diese Aufgabe wird durch die im kennzeichnenden Teil des Hauptanspruchs gegebenen Merkmale gelöst. Ein Verfahren zur Herstellung derartiger Sicherheitselemente ist Ge­genstand eines nebengeordneten Anspruchs.This object is achieved by the features given in the characterizing part of the main claim. A method for producing such security elements is the subject of a subordinate claim.

Durch die erfindungsgemäße Zusammensetzung des Sicher­heitsfadens aus zwei in gleicher Weise vorbehandelten Folien erhält der Faden einen vollkommen symmetrischen Aufbau. Vorzugsweise werden die beiden Trägerfolien aus der gleichen Folie gewonnen, in dem zunächst eine größere Folienbahn bereitgestellt, in einer Beschichtungsanlage mit den entsprechenden Beschichtungen versehen wird, die Folienbahn dann in zwei Längsbahnen geschnitten wird und diese Längsbahnen in der erfindungsgemäßen Form überla­gert und miteinander verbunden werden. Damit werden auch Schwankungen vermieden, die aufgrund der Fertigung der Folienbahnen in zwei unterschiedlichen Produktionsab­läufen entstehen könnten.The composition of the security thread according to the invention from two foils pretreated in the same way gives the thread a completely symmetrical structure. The two carrier films are preferably obtained from the same film, in which a larger film web is first provided, the corresponding coatings are provided in a coating system, the film web is then cut into two longitudinal webs and these longitudinal webs are overlaid and connected to one another in the form according to the invention. This also avoids fluctuations that could arise from the production of the film webs in two different production processes.

Der Sicherheitsfaden, der bei der Papierherstellung von einer Rolle abgezogen und an vorbestimmter Stelle in der Pulpe zum Papiersieb geführt wird, hält seine Lage über diesen Weg, in dem er frei geführt wird, ein, ohne sich um seine Längsachse zu drehen. Der Ausschuß, der bei Fä­den mit asymmetrischen Aufbau aufgrund mangelnder Plan­lage des Fadens in der Papierebene entsteht, kann dadurch vermieden werden.The security thread, which is pulled off a roll during paper production and is guided to the paper screen at a predetermined position in the pulp, maintains its position via this path, in which it is guided freely, without rotating about its longitudinal axis. The reject which arises in the case of threads with an asymmetrical structure due to the flatness of the thread being flat in the paper plane can thereby be avoided.

Durch die Verlagerung der empfindlichen Schichten in die inneren Bereiche des Sicherheitsfadens können nun auch Materialien Verwendung finden, die beim Stand der Tech­nik wegen ihrer exponierten Lage und der mangelnden Umweltbeständigkeit praktisch nicht benutzt werden können.By shifting the sensitive layers into the inner areas of the security thread, materials can now also be used that are used in the prior art because of their exposed position and the lack of them Environmental resistance can practically not be used.

Zudem ist jede eine Markierungssubstanz enthaltende Schicht doppelt vorhanden. Das Fehlen einer Markierungs­substanz in einer Schicht führt - falls nicht der unwahr­scheinliche Fall auftritt, daß an der gleichen Stelle in der Gegenschicht auch die Substanz fehlt - nicht zum to­talen Ausfall des Echtsheitsmerkmals. In diesem Fall ist die Substanzmenge zwar nur halb so groß, diese Reduzie­rung der Menge kann aber durch entsprechende Auslegung der Nachweisapparatur problemlos kompensiert werden.In addition, each layer containing a marking substance is present twice. The absence of a marking substance in one layer does not lead to a total loss of the authenticity feature, unless the unlikely event occurs that the substance is also missing at the same location in the opposite layer. In this case, the amount of substance is only half as large, but this reduction in the amount can easily be compensated for by appropriate design of the detection apparatus.

Die beiden Trägerfolien werden in der Regel über eine Klebeschicht miteinander verbunden, wobei je nach den Gegebenheiten geeignete Kleber auszuwählen sind. Sind z. B. die beiden innen liegenden Schichten Metallschichten und soll der Echtheitsnachweis über die Prüfung der elek­trischen Leitfähigkeit erfolgen, so wird vorzugsweise ein Klebematerial verwendet, das mit elektrisch leitfähigen Pigmenten durchsetzt ist. Durch diese elektrisch leitfä­higen Pigmente werden die beiden Metallschichten mitein­ander elektrisch verbunden. Sollte es bei der Herstellung der Folie oder bei der Einbettung des Sicherheitsfadens in das Papier zu einem Bruch in der Metallschicht kommen, so dient die Klebeschicht als Überbrückungsglied zur Auf­rechterhaltung der elektrischen Verbindung über die ge­samte Länge des Sicherheitselements.The two carrier foils are generally connected to one another by means of an adhesive layer, suitable adhesives being selected depending on the circumstances. Are z. B. the two inner layers of metal layers and if the authenticity is to be verified by checking the electrical conductivity, an adhesive material is preferably used which is permeated with electrically conductive pigments. These electrically conductive pigments electrically connect the two metal layers to one another. If there is a break in the metal layer during the manufacture of the film or when the security thread is embedded in the paper, the adhesive layer serves as a bridging element to maintain the electrical connection over the entire length of the security element.

Während eine Magnetschicht als abriebgefährdete Schicht vorzugsweise nach innen verlagert wird, können wider­standsfähige Beschichtungen, wie z. B. eine Lackschicht oder eine Farbschicht, auch auf der Außenseite der Kunst­stoffschicht aufgebracht werden, zudem sich Kunststoff­oberflächen in der Regel besser bedrucken lassen als z. B. metallische Oberflächen.While a magnetic layer as an abrasion-sensitive layer is preferably shifted inwards, resistant coatings, such as, for example, B. a layer of paint or a layer of paint, can also be applied to the outside of the plastic layer, in addition, plastic surfaces can usually be printed better than z. B. metallic surfaces.

Die innenliegenden Beschichtungen können entsprechend dünn ausgeführt werden, da sie nun durch die äußeren Kunststoffolien gegen mechanische Belastungen ausrei­chend geschützt sind.The internal coatings can be made thin, since they are now adequately protected against mechanical loads by the outer plastic films.

In einer bevorzugten Ausführungsform wird bei der Her­stellung der Trägerfolien zunächst die metallische Schicht aufgebracht und erst auf diese metallische Schicht die Magnetschicht. Die metallisch reflektierende Schicht deckt damit nach der Übereinanderlage der beiden Folien die Magnetschicht, die eine schwarze oder braune Eigenfarbe aufweist, ab. Dieser Faden kann dann auch im Druckbildbereich des Sicherheitsdokumentes eingelagert werden, da der Faden wegen seiner reflektierenden Ober­fläche im Auflicht nicht bzw. nur als schwach hell er­scheinender Bereich erkennbar ist und damit den visuellen Eindruck des Druckbilds nicht stört. Erst bei Betrach­tung im Durchlicht ist dieser Faden als dunkler Streifen im Papier erkennbar. Diese Unterschiede in der Auf- und Durchlichtbetrachtung sind auch ein einfaches Mittel, um das Dokument von einer Kopie unterscheiden zu können.In a preferred embodiment, the metallic layer is first applied during the production of the carrier foils and the magnetic layer is only applied to this metallic layer. The metallic reflective layer thus covers the magnetic layer, which has a black or brown intrinsic color, after the two foils have been superimposed. This thread can then also be stored in the printed image area of the security document, since the thread cannot be recognized or can only be recognized as a faintly bright area due to its reflecting surface in incident light and thus does not disturb the visual impression of the printed image. Only when viewed in transmitted light can this thread be recognized as a dark stripe in the paper. These differences in reflected and transmitted light viewing are also a simple means of distinguishing the document from a copy.

Die Sicherheitsfäden können aber auch nach an sich be­kannten Verfahren so in das Dokument eingelagert werden, daß sie stellenweise an der Oberfläche erscheinen. Gerade hier zeigt sich ein besonderer Vorteil der Erfindung. Durch die stellenweise exponierte Lage des Sicherheits­fadens an der Dokumentenoberfläche ist er gerade hier durch den täglichen Gebrauch besonderen mechanischen Be­lastungen ausgesetzt. Beim erfindungsgemäßen Sicherheits­faden bilden aber nun gegen mechanische und chemische Einflüsse widerstandsfähige Kunststoffschichten, wie z. B. Polyesterfolien, die Außenschichten, die die emp­findlichen Merkmalsschichten schützen. Der Faden zeigt also trotz seiner exponierten Lage keine Abnutzungser­scheinungen.However, the security threads can also be embedded in the document by methods known per se so that they appear on the surface in places. This is a particular advantage of the invention. Due to the exposed position of the security thread on the document surface, it is exposed to special mechanical loads due to daily use. In the security thread according to the invention, however, plastic layers which are resistant to mechanical and chemical influences, such as, for. B. polyester films, the outer layers that protect the sensitive feature layers. In spite of its exposed position, the thread shows no signs of wear.

Das doppelte Vorhandensein einer Markierungssubstanz kann im Falle der metallischen bzw. elektrisch leitfähi­gen Beschichtung vorteilhaft zur Echtheitsprüfung ge­nutzt werden.The double presence of a marking substance can advantageously be used for authenticity testing in the case of the metallic or electrically conductive coating.

Bei den bekannten Sicherheitsfäden, die nur eine elek­trisch leitfähige Schicht enthalten, führen Risse in der Metallbeschichtung dazu, daß die Leitfähigkeit unter­brochen wird. Der berührungslose Nachweis der Leitfähig­keit mittels bekannter Verfahren (DE-PS 17 74 209) führte daher zu einem negativen Ergebnis. Bei der erfindungs­gemäßen Lösung sind nun zwei leitfähige Schichten vorhan­gen, die durch eine nicht leitfähige Schicht (Kunststoff­folie, Klebeschicht etc.), ein Dielektrikum bildend, ka­pazitiv gekoppelt. Treten nun in den Metallschichten Ris­se auf, so wirken die durch diese Risse unterbrochenen Metallschichten mit dem Dielektrikum dazwischen, wie hin­tereinander geschaltete Kondensatoren. Dadurch wird eine Wechselstromleitfähigkeit aufrecht erhalten, wenn man davon ausgehen kann, daß nicht an gleicher Stelle des Fadens beide Metallschichten völlig unterbrochen sind. Mißt man nun diese Wechselstromleitfähigkeit über an sich bekannte kapazitive Meßverfahren, so kann selbst bei einem oder mehreren Brüchen in ein oder beiden Metallbe­schichtungen auf das Vorhandensein zweier elektrisch leitfähiger Schichten geschlossen werden und dieses zur Echtheitserkennung dienende Merkmal eindeutig festge­stellt werden.In the known security threads, which only contain an electrically conductive layer, cracks in the metal coating lead to the conductivity being interrupted. The non-contact detection of conductivity by means of known methods (DE-PS 17 74 209) therefore led to a negative result. In the solution according to the invention, two conductive layers are now capacitively coupled, which are capacitively coupled by a non-conductive layer (plastic film, adhesive layer, etc.), forming a dielectric. If cracks now appear in the metal layers, the metal layers interrupted by these cracks with the dielectric in between act like capacitors connected in series. This maintains an alternating current conductivity if it can be assumed that both metal layers are not completely interrupted at the same point on the thread. If one measures this AC conductivity by means of capacitive measuring methods known per se, then even in the case of one or more breaks in one or both metal coatings, it can be concluded that two electrically conductive layers are present and this characteristic serving for authenticity detection can be clearly established.

Weitere Vorteile und vorteilhafte Weiterbildungen ergeben sich aus der Beschreibung bevorzugter Ausführungsformen der Erfindung anhand der Figuren.Further advantages and advantageous developments result from the description of preferred embodiments of the invention with reference to the figures.

Die Fig. zeigen:

  • Fig. 1 und 2 Querschnittsansichten zu verschiedenen Ausführungsformen erfindungsgemäßer Si­ cherheitselemente,
  • Fig. 3 eine schematische Darstellung zum Her­stellungsverfahren.
The figures show:
  • 1 and 2 cross-sectional views of various embodiments of Si according to the invention security elements,
  • Fig. 3 is a schematic representation of the manufacturing process.

Die Fig. 1 zeigt eine einfache Ausführungsform eines erfindungsgemäßen Sicherheitsfadens 1. Die Trägerfolien sind die beiden außenliegenden, transparenten Kunststoff­folien 2, 3 aus vorzugsweise Polyester. Jede dieser Kunststoffolien ist auf ihrer inneren Seite mit einer Metallbeschichtung 4, 5 versehen. Hierzu werden die Fo­lien mittels geeigneter Beschichtungsverfahren (Bedamp­fen, Sprühen, Sputtern etc.) mit einer Aluminium-, Nickel- oder auch Chromschicht beschichtet. Die Schicht­dicke liegt hier in der Regel weit unter 1 µ. Verbunden werden diese beiden Trägerfolien nach ihrer Beschichtung über eine Klebstoffschicht 6. Geeignete Kleber sind z. B. Laminierkleber, die durch Erwärmung über einen bestimmten Temperaturbereich aktiviert werden oder auch Polimerisa­tionskleber, die bei Erwärmung und/oder UV-Bestrahlung aushärten.1 shows a simple embodiment of a security thread 1 according to the invention. The carrier films are the two outer, transparent plastic films 2, 3, preferably made of polyester. Each of these plastic films is provided on its inner side with a metal coating 4, 5. For this purpose, the films are coated with an aluminum, nickel or even chrome layer by means of suitable coating processes (vapor deposition, spraying, sputtering, etc.). The layer thickness is usually far below 1 µ. After their coating, these two carrier foils are connected via an adhesive layer 6. Suitable adhesives are e.g. B. laminating glue, which are activated by heating over a certain temperature range, or polymerisation glue, which harden when heated and / or UV irradiated.

Dieser Faden hat durch seine metallische Beschichtung stark reflektierende Eigenschaften und ist damit nur im Durchlicht als dunkler Streifen erkennbar, da bei Be­trachtung im Auflicht das vom Faden reflektierte Licht durch die darüberliegende Papierschicht gestreut wird. Durch die äußeren Polyesterfolien ist der Faden gegen eine Vielzahl von chemischen Lösungsmitteln resistent und erfüllt auch aufgrund der hervorragenden mechanischen Eigenschaften von Polyester die geforderten Bedingungen, wie hohe Flexibilität und Reißfestigkeit.Due to its metallic coating, this thread has highly reflective properties and is therefore only recognizable as a dark stripe in transmitted light, since when viewed in incident light, the light reflected by the thread is scattered through the paper layer above it. Thanks to the outer polyester films, the thread is resistant to a large number of chemical solvents and also fulfills the required conditions such as high flexibility and tear resistance due to the excellent mechanical properties of polyester.

Die Fig. 2 zeigt einen Faden, in dem - wiederum zwischen zwei Polyesterfolien 8, 9 - die der Echtheitserkennung dienenden Schichtmaterialien eingelagert sind. Jede die­ser Folien wurde hier zunächst mit einer metallischen Beschichtung 10, 11 versehen und auf diese metallische Beschichtung ist eine Magnetschicht 12, 13 aufgebracht. Geeignete Magnetmaterialien bzw. Beschichtungsmaterialien sind aus der DE-PS 16 69 245 bekannt. Auch hier werden beide Trägerfolien mit ihrer beschichteten Seite nach innen gerichtet überlagert und mit Hilfe einer Klebe­schicht 14 miteinander verbunden. Die Klebeschicht ist auf eine gute Verbindung der hier innenliegenden Magnet­schichten abzustimmen.2 shows a thread in which - again between two polyester films 8, 9 - the layer materials used for authenticity detection are embedded. Each of these foils was first covered with a metallic one Coating 10, 11 provided and a magnetic layer 12, 13 is applied to this metallic coating. Suitable magnetic materials or coating materials are known from DE-PS 16 69 245. Here too, both of the carrier foils are overlaid with their coated side facing inwards and connected to one another with the aid of an adhesive layer 14. The adhesive layer has to be coordinated with a good connection of the magnetic layers inside.

In manchen Fällen, insbesondere, wenn mehrere Schichten im Sicherheitsfaden enthalten sein sollen, können die Folien auch beidseitig beschichtet werden. In diesem Fall kommt dann zumindest eines der Schichtmaterialien nach außen zu liegen. Für diese außenliegenden Schich­ten 15 sind daher Materialien zu wählen, die den chemi­schen und mechanischen Belastungen standhalten. Dabei kann es sich z. B. um eine ganzflächige Lackbeschich­tung handeln, die eine bestimmte Farbe oder auch lumi­neszierende Eigenschaften besitzt. Es können aber auch partiell ein Muster oder auch alphanumerische Schriftzei­chen aufgedruckt werden, die direkt oder unter Zuhilfe­nahme entsprechender Vergrößerungsgeräte lesbar sind. Da die Fäden in der Regel eine Breite von 0,5 mm bis max. 1,5 mm aufweisen, sind für die Bedruckung des Fadens mit Zeichen dieser Größenordnung aufwendige Drucktechniken und entsprechende Vorrichtungen notwendig, wodurch der Faden zusätzlich an Fälschungssicherheit gewinnt.In some cases, in particular if several layers are to be contained in the security thread, the films can also be coated on both sides. In this case, at least one of the layer materials then comes to the outside. Materials that withstand the chemical and mechanical loads must therefore be selected for these outer layers 15. It can be z. B. is a full-surface paint coating that has a certain color or luminescent properties. However, a pattern or alphanumeric characters can also be partially printed on, which can be read directly or with the aid of appropriate magnification devices. Since the threads usually have a width of 0.5 mm to max. 1.5 mm are required for printing the thread with characters of this size, complex printing techniques and corresponding devices, whereby the thread gains additional security against counterfeiting.

Die beiden Trägerfolien, aus denen sich der erfindungs­gemäße Sicherheitsfaden zusammensetzt, wird vorzugsweise aus einer einzigen Folie gewonnen, die vorab ein- oder beidseitig mit den gewünschten Schichten versehen wird. Die Folienseite, die die später innen liegenden Beschich­tungen trägt, wird zusätzlich mit einer Klebstoffläche versehen. Durch Falten der Folie oder Zerschneiden und entsprechende Überlagerung der beiden Bahnhälften wird die gewünschte doppellagige Folienbahn erstellt. Zur festen Verbindung der beiden Folien können diese durch eine an sich bekannte Rollenkaschieranlage gefüllt werden (Fig. 3). In dieser Anlage werden die Folien 2, 3 mit der z. B. metallischen Beschichtung 4, 5 einander zugewandt überlagert und über Heizrollen 22, Infrarot oder Hochfre­quenz, auf eine Temperatur gebracht, bei der der Kleber 6 aktiviert wird. Nach dem Durchgang durch zwei Preßwalzen 23 und anschließender Abkühlung sind die beiden Folien fest miteinander verbunden und können in einer entspre­chenden Schneideanlage in einzelne Streifen mit der ge­wünschten Breite geschnitten werden.The two carrier foils from which the security thread according to the invention is composed are preferably obtained from a single foil which is provided with the desired layers on one or both sides in advance. The side of the film that carries the later internal coatings is additionally provided with an adhesive surface. By folding the film or cutting and overlaying the two web halves accordingly created the desired double-layer film. For a firm connection of the two foils, these can be filled by a roller laminating system known per se (FIG. 3). In this system, the films 2, 3 with the z. B. metallic coating 4, 5 superimposed facing each other and brought to a temperature at which the adhesive 6 is activated via heating rollers 22, infrared or radio frequency. After passing through two press rolls 23 and subsequent cooling, the two foils are firmly connected to one another and can be cut into individual strips of the desired width in a corresponding cutting system.

Claims (14)

1. Sicherheitselement in Form eines Fadens oder Bandes zur Einbettung in ein Sicherheitsdokument, bestehend aus einer Trägerfolie und mindestens einer darauf aufgebrach­ten Markierungssubstanz z. B. in Form einer Beschichtung, die der visuellen und/oder maschinellen Echtheitserken­nung dient, dadurch gekennzeichnet, daß
- das Sicherheitselement (1) aus zwei Trägerfollen (2, 3, 8, 9) zusammengesetzt ist,
- jede der Echtheitserkennung dienenden Markierungssub­stanz (4, 5, 10, 11, 12, 13, 15) auf jeder dieser Trä­gerfolien und damit doppelt vorhanden ist,
- diese Trägerfolien so miteinander verbunden sind, daß der Gesamtaufbau - im Querschnitt betrachtet - symme­trisch ist und
- die Trägerfolien zumindest ein Paar (4 und 5, 10 und 11, 12 und 13) der jeweils doppelt vorhandenen Markie­rungssubstanzen einschließen.1. Security element in the form of a thread or tape for embedding in a security document, consisting of a carrier film and at least one marking substance applied to it. B. in the form of a coating that serves the visual and / or machine authenticity detection, characterized in that
- The security element (1) is composed of two carrier rolls (2, 3, 8, 9),
each marking substance (4, 5, 10, 11, 12, 13, 15) which serves to identify authenticity is present on each of these carrier foils and is therefore duplicated,
- These carrier films are connected to each other so that the overall structure - viewed in cross section - is symmetrical and
- The backing films include at least one pair (4 and 5, 10 and 11, 12 and 13) of the duplicating marking substances. 2. Sicherheitselement nach Anspruch 1, dadurch ge­kennzeichnet, daß das eingeschlossene Paar einer Markierungssubstanz (4, 5, 10, 11) eine metallische Beschichtung ist.2. Security element according to claim 1, characterized in that the enclosed pair of a marking substance (4, 5, 10, 11) is a metallic coating. 3. Sicherheitselement nach Anspruch 1, dadurch ge­kennzeichnet, daß das eingeschlossene Paar einer Markierungssubstanz (12, 13) eine magnetische Be­schichtung ist.3. Security element according to claim 1, characterized in that the enclosed pair of a marking substance (12, 13) is a magnetic coating. 4. Sicherheitselement nach Anspruch 2 und 3, dadurch gekennzeichnet, daß das metallische Be­schichtungspaar (10, 11) das magnetische Beschichtungs­paar (12, 13) nach außen beidseitig abdeckt.4. Security element according to claim 2 and 3, characterized in that the metallic coating pair (10, 11) covers the magnetic coating pair (12, 13) on the outside on both sides. 5. Sicherheitselement nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die beiden Trägerfolien (2, 3, 8, 9) über einer Klebstoffschicht (6, 14) miteinander verbunden sind.5. Security element according to one of claims 1 to 4, characterized in that the two carrier films (2, 3, 8, 9) are connected to one another via an adhesive layer (6, 14). 6. Sicherheitselement nach Anspruch 5, dadurch ge­kennzeichnet, daß die Klebstoffschicht (6) elektrisch leitfähige Pigmenten enthält.6. Security element according to claim 5, characterized in that the adhesive layer (6) contains electrically conductive pigments. 7. Sicherheitselement nach einem der Ansprüche 1 - 6, dadurch gekennzeichnet, daß die Träger­folien (2, 3, 8, 9) auf ihrer Außenseite mit einer um­weltresistenten Lack- oder Farbschicht (15) versehen oder bedruckt sind.7. Security element according to one of claims 1-6, characterized in that the carrier films (2, 3, 8, 9) are provided or printed on their outside with an environmentally resistant lacquer or paint layer (15). 8. Sicherheitselement nach Anspruch 7, dadurch ge­kennzeichnet, daß die Lack- oder Farb­schichten (15) zumindest teilweise lumineszierende Eigen­schaften besitzen.8. Security element according to claim 7, characterized in that the lacquer or color layers (15) have at least partially luminescent properties. 9. Verfahren zur Herstellung eines Sicherheitselementes in Form eines Fadens oder Bandes zur Einbettung in das Sicherheitsdokument, bestehend aus einer Trägerfolie und mindestens einer darauf aufgebrachten Markierungssub­stanz, die der visuellen und/oder maschinellen Echtheits­erkennung dient, dadurch gekennzeichnet,
daß
- eine Kunststoffolie bereitgestellt wird,
- diese Kunststoffolie mit der zur Echtheitserkennung dienenden Substanz versehen wird,
- eine zweite in gleicher Weise vorbehandelte Folie her­gestellt wird,
- zumindest eine der Folien auf einer mit Markierungs­substanz versehenen Seite mit einem Laminierklebstoff versehen wird,
- beide Folien, mit ihrer mit Markierungssubstanz ver­sehenen bzw. mit der Klebstoffschicht versehenen Seite zueinander zugewandt, überlagert und miteinander ver­klebt werden und
- aus dieser doppellagigen Folienbahn die Sicherheits­elemente in der erforderlichen Band- oder Fadenbreite geschnitten werden.9. A method for producing a security element in the form of a thread or tape for embedding in the security document, consisting of a carrier film and at least one marking substance applied thereon, which is used for visual and / or machine authenticity detection, characterized in that
that
a plastic film is provided,
this plastic film is provided with the substance used for authenticity detection,
a second film pretreated in the same way is produced,
at least one of the foils is provided with a laminating adhesive on a side provided with marking substance,
- Both foils, with their side provided with marking substance or with the adhesive layer facing each other, are superimposed and glued together and
- The security elements are cut in the required tape or thread width from this double-layer film. 10. Verfahren nach Anspruch 9, dadurch gekenn­zeichnet, daß die beiden Kunststoffolien aus einer Folienbahn gewonnen werden.10. The method according to claim 9, characterized in that the two plastic films are obtained from a film web. 11. Verfahren nach Anspruch 10, dadurch gekenn­zeichnet, daß diese Folienbahn nach Aufbringung der Markierungssubstanzen zur Bildung der beiden Kunst­stoffolien in zwei Längsbahnen geschnitten wird.11. The method according to claim 10, characterized in that this film web is cut after application of the marking substances to form the two plastic films in two longitudinal webs. 12. Verfahren nach einem der Ansprüche 9 bis 11, da­durch gekennzeichnet, daß die Kunst­stoffolien mehrfach mit unterschiedlichen Materialien beschichtet wird.12. The method according to any one of claims 9 to 11, characterized in that the plastic films are coated several times with different materials. 13. Verfahren nach Anspruch 12, dadurch gekenn­zeichnet, daß die verschiedenen Beschichtungen auf die gleiche Folienseite aufgebracht werden.13. The method according to claim 12, characterized in that the different coatings are applied to the same side of the film. 14. Verfahren zur Prüfung von Sicherheitselementen in Form von Fäden oder Bändern, die in Sicherheitsdokumente eingebettet sind und mindestens zwei als Markierungs­substanz dienende elektrisch leitfähige Beschichtungen aufweisen, die durch eine dielektrische Zwischenschicht elektrisch und räumlich getrennt sind, dadurch ge­kennzeichnet, daß zur Feststellung des Vor­handenseins der elektrisch leitfähigen Beschichtungen die Wechselstromleitfähigkeit des Sicherheitselements in einer kapazitiven Messung geprüft wird.14. A method for testing security elements in the form of threads or tapes, which are embedded in security documents and have at least two electrically conductive coatings serving as a marking substance, which are electrically and spatially separated by a dielectric intermediate layer, characterized in that to determine the presence of the electrically conductive coatings the AC conductivity of the security element is tested in a capacitive measurement.
EP89123254A 1988-12-21 1989-12-15 Security elements in the form of threads or strips to be embedded in security documents, and method of producing and testing same Expired - Lifetime EP0374763B1 (en)

Applications Claiming Priority (2)

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DE3843077A DE3843077A1 (en) 1988-12-21 1988-12-21 SECURITY ELEMENT IN THE FORM OF STRINGS OR TAPES FOR EMBEDDING IN SECURITY DOCUMENTS, AND METHODS FOR THE PRODUCTION AND TESTING THEREOF
DE3843077 1988-12-21

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EP0374763A2 true EP0374763A2 (en) 1990-06-27
EP0374763A3 EP0374763A3 (en) 1990-12-05
EP0374763B1 EP0374763B1 (en) 1994-06-01

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US (1) US5324079A (en)
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AT (1) ATE106323T1 (en)
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5393099A (en) * 1993-05-21 1995-02-28 American Bank Note Holographics, Inc. Anti-counterfeiting laminated currency and method of making the same
WO1999067092A1 (en) * 1998-06-25 1999-12-29 De La Rue International Limited Improvements in security documents and substrates therefor
WO1999067093A1 (en) * 1998-06-25 1999-12-29 De La Rue International Limited Improvements in security documents and substrates therefor
WO2003002355A1 (en) * 2001-06-28 2003-01-09 Giesecke & Devrient Gmbh Security element
WO2003091042A3 (en) * 2002-04-26 2004-05-13 Giesecke & Devrient Gmbh Security element comprising metallic layers
DE102010035889A1 (en) * 2010-08-30 2012-03-01 Bundesdruckerei Gmbh Value and / or security document and method for its production

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3915638B4 (en) * 1989-05-12 2006-06-08 Giesecke & Devrient Gmbh Security document with embedded security element with visually and machine-checkable tags and security element for a security document
DE4041025C2 (en) * 1990-12-20 2003-04-17 Gao Ges Automation Org Magnetic, metallic security thread with negative writing
US5509691A (en) * 1992-10-26 1996-04-23 Gao Gesellschaft Fur Automation Und Organisation Mbh Security element in the form of threads or strips to be embedded in security documents and a method for producing and testing the same
US5601931A (en) * 1993-12-02 1997-02-11 Nhk Spring Company, Ltd. Object to be checked for authenticity and a method for manufacturing the same
DE4344552A1 (en) * 1993-12-24 1995-06-29 Giesecke & Devrient Gmbh Method and device for equipping securities with authenticity features
DE4405860B4 (en) * 1994-02-23 2006-11-23 WHD elektronische Prüftechnik GmbH Measuring arrangement for evaluating a metal thread
US5944927A (en) * 1997-05-29 1999-08-31 The Standard Register Company Security paper having an embedded security thread and a process for making the security paper
US5961152A (en) * 1997-05-29 1999-10-05 The Standard Register Company Security paper having an embedded and deformed security thread and a process for making the security paper
DE19819571A1 (en) 1998-04-30 1999-11-04 Giesecke & Devrient Gmbh Security document with security element
CA2338661A1 (en) † 1998-07-27 2000-02-10 Siemens Aktiengesellschaft Security paper, method and device for checking the authenticity of documents recorded thereon
LU90424B1 (en) * 1999-07-30 2006-06-08 Cabinet Erman S A R L Manufacturing process of security markers and safety markers
GB2375078A (en) * 2001-04-30 2002-11-06 Rue De Int Ltd Security substrate with indicia only viewable in transmitted light
KR100448999B1 (en) * 2001-12-31 2004-09-16 한국조폐공사 Process for Preparing Security Paper with Windowed Thread Incorporated on Both Sides Thereof
EP1529653A1 (en) * 2003-11-07 2005-05-11 Sicpa Holding S.A. Security document, method for producing a security document and the use of a security document
ES2264372B1 (en) * 2005-03-10 2007-12-01 Fabrica Nacional De Moneda Y Timbre - Real Casa De La Moneda SAFETY STRIP, SECURITY PAPER THAT INCLUDES SUCH STRIP AND SECURITY DOCUMENT AND TICKET THAT INCORPORATE SUCH PAPER.
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WO2015085505A1 (en) 2013-12-11 2015-06-18 Sicpa Holding Sa Optically variable security threads and stripes
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PT2965920T (en) 2014-07-09 2018-01-16 Sicpa Holding Sa Optically variable magnetic security threads and stripes
DE102014011383A1 (en) 2014-08-01 2016-02-04 Giesecke & Devrient Gmbh Security element, value document substrate, security paper, value document and method for producing the same and Trensferband
CN111602178B (en) * 2018-01-11 2022-03-11 三菱电机株式会社 Image reading apparatus
CN113272087B (en) 2019-01-29 2024-04-19 巴斯夫欧洲公司 Security element

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0021350A1 (en) * 1979-06-22 1981-01-07 GAO Gesellschaft für Automation und Organisation mbH Method for verifying paper currency having a security means and paper currency having such means
EP0066854A1 (en) * 1981-06-05 1982-12-15 GAO Gesellschaft für Automation und Organisation mbH Security paper and method for its manufacture
EP0105969A1 (en) * 1982-10-20 1984-04-25 Coulter Systems Corporation Encoded security document
EP0185396A2 (en) * 1984-12-21 1986-06-25 GAO Gesellschaft für Automation und Organisation mbH Security document incorporating a security thread, and process for manufacturing and checking the authenticity of the security document

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1095286A (en) * 1963-07-08 1967-12-13 Portals Ltd Security device for use in security papers
GB1127043A (en) * 1967-01-26 1968-09-11 Portals Ltd Security papers
GB1585533A (en) * 1976-12-07 1981-03-04 Portals Ltd Security papers
US4420509A (en) * 1981-08-11 1983-12-13 Glasteel Tennessee, Inc. Copper-clad polyester-glass fiber laminates
US4446173A (en) * 1981-08-11 1984-05-01 Glasteel Tennessee, Inc. Copper-clad polyester-glass fiber laminates using zinc-coated copper
DE3779918D1 (en) * 1987-08-19 1992-07-23 Gao Ges Automation Org SECURITY PAPER.
DE3843075C2 (en) * 1988-12-21 2003-08-14 Gao Ges Automation Org Security document with an electrically conductive security element embedded in it

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0021350A1 (en) * 1979-06-22 1981-01-07 GAO Gesellschaft für Automation und Organisation mbH Method for verifying paper currency having a security means and paper currency having such means
EP0066854A1 (en) * 1981-06-05 1982-12-15 GAO Gesellschaft für Automation und Organisation mbH Security paper and method for its manufacture
EP0105969A1 (en) * 1982-10-20 1984-04-25 Coulter Systems Corporation Encoded security document
EP0185396A2 (en) * 1984-12-21 1986-06-25 GAO Gesellschaft für Automation und Organisation mbH Security document incorporating a security thread, and process for manufacturing and checking the authenticity of the security document

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5393099A (en) * 1993-05-21 1995-02-28 American Bank Note Holographics, Inc. Anti-counterfeiting laminated currency and method of making the same
WO1999067092A1 (en) * 1998-06-25 1999-12-29 De La Rue International Limited Improvements in security documents and substrates therefor
WO1999067093A1 (en) * 1998-06-25 1999-12-29 De La Rue International Limited Improvements in security documents and substrates therefor
WO2003002355A1 (en) * 2001-06-28 2003-01-09 Giesecke & Devrient Gmbh Security element
US7037606B2 (en) 2001-06-28 2006-05-02 Giesecke & Devrient Gmbh Security element
WO2003091042A3 (en) * 2002-04-26 2004-05-13 Giesecke & Devrient Gmbh Security element comprising metallic layers
US8919820B2 (en) 2002-04-26 2014-12-30 Giesecke & Devrient Gmbh Security element and method for producing the same
DE102010035889A1 (en) * 2010-08-30 2012-03-01 Bundesdruckerei Gmbh Value and / or security document and method for its production
DE102010035889B4 (en) 2010-08-30 2021-11-11 Bundesdruckerei Gmbh Value and / or security document and process for its production

Also Published As

Publication number Publication date
DE3843077A1 (en) 1990-06-28
EP0374763B1 (en) 1994-06-01
ATE106323T1 (en) 1994-06-15
DE58907775D1 (en) 1994-07-07
EP0374763A3 (en) 1990-12-05
ES2054998T3 (en) 1994-08-16
US5324079A (en) 1994-06-28

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