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EP0723501B1 - Security document with window - Google Patents

Security document with window Download PDF

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Publication number
EP0723501B1
EP0723501B1 EP94928296A EP94928296A EP0723501B1 EP 0723501 B1 EP0723501 B1 EP 0723501B1 EP 94928296 A EP94928296 A EP 94928296A EP 94928296 A EP94928296 A EP 94928296A EP 0723501 B1 EP0723501 B1 EP 0723501B1
Authority
EP
European Patent Office
Prior art keywords
security document
security
document according
film
layer
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.)
Expired - Lifetime
Application number
EP94928296A
Other languages
German (de)
French (fr)
Other versions
EP0723501B2 (en
EP0723501A1 (en
Inventor
Jürgen Herrmann
Werner Reinhart
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Leonhard Kurz Stiftung and Co KG
Original Assignee
Leonhard Kurz GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Application filed by Leonhard Kurz GmbH and Co KG filed Critical Leonhard Kurz GmbH and Co KG
Publication of EP0723501A1 publication Critical patent/EP0723501A1/en
Application granted granted Critical
Publication of EP0723501B1 publication Critical patent/EP0723501B1/en
Publication of EP0723501B2 publication Critical patent/EP0723501B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; 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
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30Identification or security features, e.g. for preventing forgery
    • B42D25/328Diffraction gratings; Holograms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; 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
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29Securities; Bank notes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; 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
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40Manufacture
    • B42D25/45Associating two or more layers
    • B42D25/465Associating two or more layers using chemicals or adhesives
    • B42D25/47Associating two or more layers using chemicals or adhesives using adhesives
    • B42D2033/04
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; 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
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30Identification or security features, e.g. for preventing forgery
    • B42D25/351Translucent or partly translucent parts, e.g. windows
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S283/00Printed matter
    • Y10S283/901Concealed data
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S283/00Printed matter
    • Y10S283/902Anti-photocopy
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S283/00Printed matter
    • Y10S283/904Credit card
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00Stock material or miscellaneous articles
    • Y10S428/914Transfer or decalcomania
    • Y10S428/915Fraud or tamper detecting
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00Stock material or miscellaneous articles
    • Y10S428/916Fraud or tamper detecting

Definitions

  • the invention relates to documents of value, in particular securities, such as Banknotes, checks, travelers checks or shares, but also documents that do not exist or only partially exist, e.g. Credit cards, ID cards etc.
  • diffraction structures e.g. Holograms, so-called pixelgrams etc.
  • these security elements are comparatively complex to manufacture.
  • AU-PS 488 652 describes security documents which consist of several interconnected plastic sheets, at least one optically variable security element being arranged between these sheets and a transparent window being provided in at least one of the cover sheets in the area of this security element, so that the security element can be viewed through the window.
  • the state of the art is used, for example, to create a recess in a plastic sheet provided in the interior of the document, into which the security element is inserted.
  • the security element is then fixed in the recess by cover films applied on both sides.
  • cover films applied on both sides.
  • the attachment of the security element causes considerable difficulties and, in particular, a full-area lamination of comparatively large areas of plastic films is required.
  • the inclusion of the security element between the two films often leads to a significant deterioration in the brilliance and thus impairment of the recognizability of the security element, in particular under unfavorable lighting conditions.
  • the known document can be used as a security, in particular banknotes, only with difficulty because it differs fundamentally in terms of its surface quality and other properties from the properties of paper known and familiar in particular in the case of banknotes.
  • EP-PS 0 229 645 describes the production of a security paper with an embedded security element in the form of a thread or tape in such a way that two separate paper layers are formed, the paper layers having areas of reduced thickness or openings. The two layers of paper are brought together and during the bringing together the tape serving as a security element is inserted.
  • the arrangement can also be chosen so that the openings in the two layers of paper (on the top and bottom of the tape serving as a security element) overlap one another, so that the security element is exposed on both sides of the paper web by one To allow viewing of the security element also in transmitted light.
  • the arrangement has rather only been chosen such that the security thread or the security element was alternately exposed on the top or bottom.
  • a major deficiency of the known procedure is in any case to be seen in the fact that the security threads, after they have to be worked into the paper web, may only have a relatively small width in order not to disturb the cohesion of the paper itself.
  • the invention is therefore based on the object of proposing a document of value with a window-like security element which is suitable for transmitted light and which can be produced easily and without impairing the recognizability of the security element, the problems known in the production of security papers with embedded security thread not being expected during manufacture are. However, it should be ensured that counterfeiting of the security element by pure printing or color copying is impossible, but at the same time there are a multitude of different design options for the security element.
  • attempts are no longer made to store a security element in the carrier. Rather, the opening is deliberately retrofitted in the carrier and then this opening is closed again by means of an at least partially transparent cover film, and as a result of the full-surface attachment of the cover film to the surface of the carrier, the cover film is detached, which may be based, for example, on optical effects Security feature bears without damage to the carrier is practically excluded. Because of the arrangement according to the invention, it is readily possible to cover a cover with comparatively large dimensions use, which means that thin films can be used. At the same time, a procedure according to the invention also offers the possibility of providing windows with relatively large dimensions, whereas only very small dimensions could be achieved in the known windows produced during paper production.
  • the windows can be large, even if additional security elements are present, there is also the option of keeping a sufficiently large area of the cover film completely transparent.
  • the background will show through in the area of the window, so that the color of the background appears at this point in the reproduction. In this way, counterfeits can generally be easily identified.
  • the authenticity of the document of value can also be easily determined by the user, since the presence or absence of a transparent area of the document of value can also be readily ascertained with the unarmed eye. Covering the opening of the carrier by means of the cover film has the advantage that, despite the presence of one or more openings, the stability of the document of value does not suffer.
  • the use of a cover film offers further design options for the security element. Variations of the security element are also possible due to the different shape of the window-like opening or variation in the positioning of the opening or attachment of several, possibly different, openings.
  • the cover film is expediently arranged in a recess in the carrier surface which includes the window-like opening, the carrier being particularly advantageous for forming the Depression is compressed.
  • the compression simultaneously smoothes the surface of the carrier, which can be advantageous for certain security features. For example, when security features are applied to paper in a hot stamping process, their optical efficiency is reduced by the relatively rough paper surface, which can be avoided by appropriately smoothing the paper surface serving as a carrier.
  • the opening can be produced in a simple manner by means of a punching or cutting process, with the usual punching methods and as Cutting methods especially laser cutting should be mentioned.
  • the application of the depression and the application of the cover film is simplified if the cover film extends across the entire width or length of the document of value, i.e. a recess from edge to edge is provided.
  • the procedure is expediently such that the cover film is applied to the carrier of the document of value, while at the same time forming the recess, by means of pressure, preferably laminated onto the carrier in a rolling process.
  • the window-like opening can be made in one pass through a corresponding machine, after which the cover film is then laminated on in a further step.
  • the invention provides that at least on one side of the carrier, the cover film and at least the adjoining surface area of the value document are overprinted with a coherent pattern.
  • an adhesion promoter (primer) layer at least on its free side, which is not attached to the value document or the carrier forming it.
  • the cover film is a laminating film which consists of a transparent carrier film and a decorative layer adhering firmly to it
  • the decorative layer which preferably comprises at least one lacquer layer, at least in a partial area of the Opening is also transparent.
  • the decorative layer can be specially designed graphically using various methods known per se, in order to create additional recognition options for an original value document. However, it is always important that the decorative layer in the area of the opening is at least partially transparent, because only then will the effect primarily aimed for by the invention be retained.
  • the cover film can be provided with at least one special security feature, preferably based on optical effects, and for at least a partial area of the surface area of the
  • the breakthrough is left transparent, advantageously at least one security feature being formed by a diffraction structure and / or thin-layer arrangement that is effective in terms of refraction and / or diffraction.
  • the cover film can also comprise, for example, reflective surfaces, special imprints, for example in the form of micro-script, etc. It is expedient if at least one of the security features is arranged in the area of the opening, because it can then be, for example, such a security feature that authenticity can only be checked in transmitted light, with transmitted light methods in particular using advantages when using automatic testing devices .
  • the decorative layer is expediently constructed in such a way that - starting from the carrier film - it has an at least partially removed surface of the carrier film provided with the diffraction structure serving as a security feature, comprises a reflective layer at least in the region of the diffraction structure and a transparent protective lacquer layer at least in the region of the opening.
  • the structure of the decorative layer in the laminating film according to the invention basically corresponds to the decorative layer structure known per se from hot stamping foils for security purposes with a diffraction structure, for example EP 0 559 069 A1.
  • the cover film is fastened to the carrier in such a way that its decorative layer faces the surface of the carrier, one obtains the advantage that the surface of the cover film carrying the decorative layer is practically deepened and thus to a certain extent against mechanical ones Stress is arranged protected.
  • a special adhesive layer for attaching the cover film to the document of value may be dispensed with, namely when the decorative layer, at least its transparent protective lacquer layer, already has sufficiently adhesive properties.
  • a further possibility according to the invention is that the decorative layer carries a layer of a curable adhesive on the side opposite the carrier film, it being possible, for example, to use reaction adhesives which are only exposed to the appropriate heat or radiation, for example IR or UV radiation. fully react and harden.
  • reaction adhesives which are only exposed to the appropriate heat or radiation, for example IR or UV radiation. fully react and harden.
  • the use of such adhesives has the advantage that detachment of the cover film when the adhesive has hardened is impossible without damaging the value document itself.
  • the carrier has an adhesive application in the area used to fasten the covering film, although it may be sufficient to provide only this adhesive application on the carrier, but it may also be expedient if the covering film is additionally provided despite the adhesive application on the carrier is provided with an appropriate adhesive layer. If only the carrier is provided with the adhesive application, the advantage is achieved that possible carryover of glue in the area of the opening can be avoided.
  • the security 1 shown schematically in FIG. 1 can be used with regard to its basic design (in the sense of the invention) for all possible types of printed matter, for example bank notes, checks, travelers checks, shares etc., none of which are shown in the drawing Details are shown and apart from the security elements essential to the invention, other possible security measures have not been discussed in detail. Furthermore, there is a fundamentally corresponding structure for other value documents, for example credit cards, ID cards or the like. intended.
  • the security according to FIG. 1 consists of a paper carrier 2, which can be provided, for example in the manner known from banknotes, with a watermark, with special imprints and other security elements, such as one schematically indicated at 3.
  • the security element 3 can have the form of a special microprint, for example. But it can also be a specific embossing, a reflective embossing, etc.
  • the paper carrier 2 is normally part of a paper web or a paper sheet from which the security 1 is cut after completion when the security 1 is produced.
  • another suitable carrier which may already have a security element, is used, e.g. a plastic card or film is used.
  • the carrier 2 has at least one window-like opening 4, which is closed by means of a cover film 5, the cover film 5 being attached to the entire surface 6 of the carrier 2, preferably being glued on, such that it opens the window-like opening 4 As can be seen from FIGS. 1 and 2, it projects beyond on all sides, so that the covering film 5 adheres firmly to the surface 6 of the carrier 2 around the opening 4 in the regions 7 (FIG. 2).
  • the cover film is arranged in a recess 8 in the surface 6 of the carrier 2, so that the cover film in the finished security 1 does not lead to a substantial increase in the thickness of the value document, which is particularly important if one Variety of documents of value to be stacked.
  • the security threads previously known for securities are only relatively narrow and therefore have to be comparatively thick for mechanical reasons. However, they then protrude far beyond the surface of the security and, when stacking security documents in the area of the security threads, lead to an undesirable thickening of the stack, which may complicate the production and automatic handling of the security.
  • the depression 8 is produced in that the paper carrier 2 is compressed in the area of the depression 8. This can be done in a simple manner simultaneously with the application of the cover film 5 to the surface 6 of the carrier 2, namely by applying a correspondingly high pressure when the cover film 5 is applied to the surface 6 of the carrier 2, resulting in permanent compression of the carrier 2 leads.
  • the depression 8 for the cover film 5 extends over the entire width of the carrier 2 from its lower edge 9 to the upper edge 10.
  • This design has the advantage that both the application of the cover film 5 and the design of the recess 8 can take place in a roll-off process by means of corresponding rollers or rolls, which offers the possibility of providing the security 1 with the cover film 5 in a continuous process, the window-like step being carried out in a step preceding the application of the cover film 5 Breakthrough by punching, which can also be done in a rolling process.
  • the punching process can, if the tool is designed accordingly, be combined with the compression process in one operation.
  • FIG. 1 shows that the cover film 5 is only transparent in a partial area of the window-like opening 4, namely the outer area 11, while in the inner area of the opening 4 an additional, e.g. Security feature 12 based on optical effects, e.g. in the form of a diffraction structure effective in transmission.
  • the additional security feature 12 in the window-like opening 4 can, however, not only be formed by a diffraction structure having an optical refractive and / or diffractive effect, for example a hologram, pixel gram, etc. It would also be conceivable to choose, for example, a reflective surface, a special microprint, a thin-layer arrangement or some other design that is difficult to imitate as additional security feature 12.
  • the cover film can be provided outside the area corresponding to the window-like opening with at least one additional, e.g. be provided on the basis of optical effects security feature 13, which security feature 13 can also be designed in a wide variety of ways depending on the material of the cover film, its possible coating, etc.
  • An undesired detachment of the cover film 5 from the surface 6 of the carrier 2 is further increased according to the invention complicated by the fact that the cover film 5 and the adjoining areas of the surface 6 of the carrier 2 are overprinted with a coherent pattern 14.
  • This pattern 14 can also be printed in the continuous process already mentioned in a process step following the application of the cover film 5.
  • a document of value e.g. a security 1 according to the invention offers a multitude of further possibilities for forming security features compared to the previously known security documents, but it must always be ensured that in the area of the at least one window-like opening 4 - of course, several openings could also be provided - the cover film 5 at least is transparent in some areas because only then can it be easily checked with the naked eye and only in such a case does an optical falsification occur in the attempt to reproduce by means of color copying or printing in the transparent area within the opening 4. This distortion is obtained regardless of which color is selected for the background when copying, because in any case the corresponding area is not transparent.
  • FIG. 3 schematically shows a laminating film as it can be used as a covering film 5 for the security 1 of FIGS. 1 and 2.
  • This cover film 5 of FIG. 3 consists of a transparent carrier film 15. This is on its surface facing away from the decorative layer 16 with a thin adhesive layer 17, which is intended to ensure that the printed pattern 14 adheres well to the carrier film 15, provided.
  • the opposite surface of the carrier film 15 is also provided with an adhesion promoter layer 18, which is intended to ensure that the decorative layer 16 adheres sufficiently to the carrier film 15.
  • the decorative layer 16 as shown in FIG. 1 — is provided with different security features 12, 13, both of which are diffraction structures as described above.
  • the decorative layer 16 has a thermoplastic deformable base lacquer layer 19.
  • Different diffraction structures 20 and 21 are formed in this base lacquer layer 19 in the areas corresponding to the security features 12, 13, these diffraction structures 20, 21 being produced by appropriately embossing the thermoplastic deformable base lacquer layer 19 after it has been applied to the carrier film 15.
  • the diffraction structures 20, 21 are of course only visible in the cover film 5 if the layers surrounding the diffraction structures 20, 21 have correspondingly different optical properties. This is achieved, for example, in the case of the diffraction structure 20 of the security feature 12 in that a reflective metal coating 22 is provided in the region of the diffraction structure 20, the metal layer 22 being, for example, an aluminum layer vapor-deposited in a vacuum or in a suitable manner applied layer of another material known to be suitable can act.
  • a suitable dielectric for example TiO 2 or TnS, is attached in the region of the diffraction structures 20, 21.
  • the diffraction structure in the cover film 5 is then covered by a transparent protective lacquer layer 23, which in turn can carry an adhesive layer 24, at least in the area of the opening 4, the adhesive layer 24 primarily having the task of adhering the cover film 5 to the surface 6 to favor the carrier 2.
  • a transparent protective lacquer layer 23 which in turn can carry an adhesive layer 24, at least in the area of the opening 4, the adhesive layer 24 primarily having the task of adhering the cover film 5 to the surface 6 to favor the carrier 2.
  • it can also favor a possible subsequent printing on the side of the cover film facing away from the surface 6 of the carrier 2 in the area of the opening (s) 4, with correspondingly thin value documents or large openings.
  • the protective lacquer layer 23 is usually colorless, in order to facilitate identification of the security element, it can certainly be provided that the second security feature 13 is distinguished by a special coloring in addition to its diffraction effect. In the case of the film in FIG. 3, this is achieved, for example, in that the diffraction structure 21 of the security feature 13 is covered with a transparent but colored lacquer layer 25 before the protective lacquer layer 23 is applied.
  • a cover film 5 according to FIG. 3 could be constructed as follows:
  • Adhesion layers 17 18 and 24 - Adhesion layers 17 18 and 24 -:
  • Adhesion promoter layers 17 and 24 may be dispensed with, especially if subsequent overprinting of the cover film is not considered.
  • Carrier film 15 -
  • Polyester (PET) or polycarbonate (PC) films with a thickness between 6 and 12 ⁇ m have proven to be suitable.
  • Thermoplastic deformable base coat 19 -
  • This layer usually has a thickness of 0.8 to 2 ⁇ m, the layer thickness depending on the type of structure to be introduced.
  • the base lacquer layer 19 is also applied in a printing process and can be composed approximately as follows: Parts by weight Ethyl acetate 350 toluene 200 Butyl acetate 130 Polymethyl methacrylate (softening point approx. 170 ° C) 270 Styrene copolymer (softening point approx. 100 ° C) 50
  • the metallization 22 consists, for example, of aluminum, chromium, gold or silver applied in a vacuum, and depending on the material used, the comminution can be carried out by suitable methods, for example by evaporation, sputtering, etc. Instead of the metal layer, a suitable dielectric, for example TiO 2 or ZnS, can also be applied.
  • a metallization is expediently applied over the entire, correspondingly deformed surface of the thermoplastic base lacquer layer 19 and then partially in a known method away.
  • thermoplastic base lacquer layer 19 is provided with a detachable layer in the unstructured areas, for example by printing in accordance with the register, before the metal layer is applied. After the metallization, this releasable layer and thus the metallization in the region of the releasable layer are then removed again.
  • the thickness of the metallization or the dielectric layer is, for example, 60 to 20 ⁇ .
  • Transparent protective lacquer layer 23 -
  • This layer has a thickness of 1 to 5 ⁇ m, preferably 2 to 3 ⁇ m, it being possible for the thickness in the regions where the additional lacquer layer 25 is provided to be thinner than in the regions without such an additional lacquer layer.
  • the thickness of the protective lacquer layer 23 depends on the respective mechanical requirements, which are normally not too high, because on the one hand the size of the opening 4 is limited and on the other hand the cover film 5 is preferably applied in this way to the surface 6 of the carrier 2 that the decorative layer 16 points to the surface 6 of the carrier 2, so that the strong mechanical stress occurs on the side of the carrier film 15.
  • the transparent protective lacquer layer can be composed as follows -: Parts by weight Methyl ethyl ketone 300 Ethyl acetate 170 Cyclohexanone 100 Hydrofunctional acrylate (60% in xylene / EPA, OH number 140) 200 Cellulose nitrate (low viscosity, 65% in alcohol) 80 Aromatic isocyanate (50% in ethyl acetate, NCO content 8%) 150
  • the protective lacquer layer 23 and, if appropriate, the additional lacquer layer 25 are also normally applied in a printing process, the additional lacquer layer 25 being to be printed on before the protective lacquer layer 23.
  • the composition of the additional, transparent lacquer layer 25 it should be noted that it can be composed essentially like the protective lacquer layer 23, but additionally contains a transparent dye.
  • the cover film 5 is thus first produced, for example in a manner which is fundamentally known from the production of hot stamping films, the difference between the cover film 5 and a hot stamping film, however, being that care is taken with the cover film 5 that the decorative layer 16 adheres firmly to the carrier film 15, while the essence of a hot stamping film can be seen precisely in the fact that the decorative layer can easily be detached from the carrier film.
  • the cover film is then preferably rolled onto the carrier 2 of the value document, e.g. Security 1 applied, the window-like opening 4, e.g. by punching. Subsequently or simultaneously, the carrier 2 is compressed to produce the depression 8, which e.g. can be done by means of rollers using correspondingly high pressures.
  • the covering film 5 is now applied to the surface 6 of the carrier 2 by rolling it off.
  • the covering film 5 can be fixed on the carrier 2 either by the protective lacquer layer 23 or the adhesion promoter layer 24 of the decorative layer 16 of the covering film 5 having corresponding adhesive properties or additionally providing the decorative layer 16 of the covering film 5 with a hardening adhesive layer, not shown in the drawing is.
  • a further possibility is to provide the surface 6 of the carrier 2 with an adhesive application in the region of the depression 8 before the cover film 5 is applied, by means of which the cover film 5 is then fixed to the carrier 2.
  • Which of the two measures is taken depends on the type or composition of the carrier 2, the decorative layer 16 of the cover film 5 and the respective intended use, although it is also conceivable to provide adhesive on both the cover film 5 and the carrier 2.
  • the surface 6 and possibly also the underside of the carrier 2 can then be overprinted with the coherent pattern 14 in a conventional printing process in order to further improve security.
  • the individual securities 1 cut out of the paper composite (web, sheet) forming several supports 2.
  • the exemplary embodiment of the document of value described is a security.
  • the inventive idea can also be used in the same way for documents of value made of materials other than paper, e.g. Credit cards, ID cards etc. are used.

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  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Credit Cards Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Burglar Alarm Systems (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Document Processing Apparatus (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Holo Graphy (AREA)

Abstract

Proposed is a value-bearing document in which the carrier is provided with a window-like opening which is closed by a cover foil which is transparent at least in a region-wise manner, wherein in particular in the region of the window-like opening the cover foil can be provided with additional security features, for example diffraction structures.

Description

Die Erfindung betrifft Wertdokumente, insbesondere Wertpapiere, wie z.B. Banknoten, Schecks, Reiseschecks oder Aktien, aber auch nicht oder nur teilweise aus Papier bestehende Dokumente, z.B. Kreditkarten, Ausweise etc..The invention relates to documents of value, in particular securities, such as Banknotes, checks, travelers checks or shares, but also documents that do not exist or only partially exist, e.g. Credit cards, ID cards etc.

Vor allem im Hinblick auf die Möglichkeiten, die moderne Farbkopierer und andere Reproduktionssysteme bieten, besteht die dringende Notwendigkeit, Wertdokumente mit besonderen Sicherheitselementen auszustatten, die eine Fälschung unter Verwendung derartiger Geräte erschweren. Zu diesem Zweck wurde bereits eine Vielzahl von Möglichkeiten diesem Zweck wurde bereits eine Vielzahl von Möglichkeiten vorgeschlagen.Especially with regard to the possibilities that modern color copiers and other reproduction systems offer, there is an urgent need to provide security documents with special security elements that make counterfeiting with the use of such devices difficult. To this end, there have been a variety of options A variety of options have already been proposed for this purpose.

Beispielsweise ist es bekannt, Wertdokumente wie Wertpapiere, Karten, Ausweise etc. mit Sicherheitselementen in Form reflektierender Flächen zu versehen. Diese reflektierenden Flächen werden durch einen Farbkopierer normalerweise als schwarze Flächen wiedergegeben. Hier besteht aber die Möglichkeit, nachträglich eine entsprechende, metallisch glänzende Schicht aufzubringen.For example, it is known to provide security documents such as securities, cards, ID cards, etc. with security elements in the form of reflecting surfaces. These reflective areas are usually reproduced as black areas by a color copier. Here, however, there is the possibility of subsequently applying a corresponding, metallic, shiny layer.

Eine weitere Verbesserung der Fälschungssicherheit ergibt sich dann, wenn Sicherheitselemente in Form von brechungs- oder beugungsoptisch wirksamen Strukturen, sog. Diffraktionsstrukturen, z.B. Hologramme, sog. Pixelgrame etc., verwendet werden. Diese Sicherheitselemente sind jedoch hinsichtlich der Herstellung vergleichsweise aufwendig.A further improvement in counterfeit security arises when security elements in the form of structures that are effective in terms of refraction or diffraction, so-called diffraction structures, e.g. Holograms, so-called pixelgrams etc., can be used. However, these security elements are comparatively complex to manufacture.

Es ist auch bereits bekannt, Sicherheitselemente für Wertdokumente so auszubilden, dass sie vor allem für Durchlichtbetrachtung geeignet sind. Beispielsweise beschreibt die AU-PS 488 652 Sicherheitsdokumente, die aus mehreren miteinander verbundenen Kunststoff-Bahnen bestehen, wobei zwischen diesen Bahnen zumindest ein optisch veränderliches Sicherheitselement angeordnet und in wenigstens einer der Abdeckbahnen im Bereich dieses Sicherheitselementes ein transparentes Fenster vorgesehen ist, so dass das Sicherheitselement durch das Fenster betrachtet werden kann. Zur Anbringung der Sicherheitselemente wird gemäss dem Stand der Technik beispielsweise so vorgegangen, dass in einer im Inneren des Dokumentes vorgesehenen Kunststoffbahn eine Aussparung erzeugt wird, in die das Sicherheitselement eingelegt wird.It is also already known to design security elements for documents of value in such a way that they are particularly suitable for viewing transmitted light. For example, AU-PS 488 652 describes security documents which consist of several interconnected plastic sheets, at least one optically variable security element being arranged between these sheets and a transparent window being provided in at least one of the cover sheets in the area of this security element, so that the security element can be viewed through the window. In order to attach the security elements, the state of the art is used, for example, to create a recess in a plastic sheet provided in the interior of the document, into which the security element is inserted.

Anschliessend wird dann das Sicherheitselement in der Aussparung durch beidseits aufgebrachte Abdeckfolien fixiert. Eine derartige Vorgehensweise hat zum einen den Nachteil, dass die Anbringung des Sicherheitselementes erhebliche Schwierigkeiten bereitet und insbesondere ein vollflächiges Laminieren vergleichsweise grosser Bereiche von Kunststoffolien erforderlich ist. Der Einschluss des Sicherheitselementes zwischen die beiden Folien führt häufig zu einer deutlichen Verschlechterung der Brillanz und damit Beeinträchtigung der Erkennbarkeit des Sicherheitselementes insbesondere unter ungünstigen Beleuchtungsbedingungen. Als Wertpapier, insbesondere Banknoten, kann das bekannte Dokument nur mit Schwierigkeiten verwendet werden, weil es sich hinsichtlich seiner Oberflächenbeschaffenheit und sonstigen Eigenschaften grundlegend von den insbesondere bei Banknoten bekannten und geläufigen Eigenschaften von Papier unterscheidet.The security element is then fixed in the recess by cover films applied on both sides. On the one hand, such a procedure has the disadvantage that the attachment of the security element causes considerable difficulties and, in particular, a full-area lamination of comparatively large areas of plastic films is required. The inclusion of the security element between the two films often leads to a significant deterioration in the brilliance and thus impairment of the recognizability of the security element, in particular under unfavorable lighting conditions. The known document can be used as a security, in particular banknotes, only with difficulty because it differs fundamentally in terms of its surface quality and other properties from the properties of paper known and familiar in particular in the case of banknotes.

Es ist auch bereits von australischen Banknoten her bekannt, transparente Träger derart oberflächlich zu bedrucken, dass ein bestimmter Bereich fensterartig, d.h. durchsichtig, belassen wird. Auch hier gilt jedoch, dass man auf die Vorzüge von Papier verzichten muss. Es ist beispielsweise nicht möglich, ein Wasserzeichen anzubringen. Auch ergeben sich gegenüber Papier unterschiedliche taktile Eigenschaften (Fehlen der besonderen Griffigkeit), die dem Bürger bekannt sind. Es entfallen auch die bewährten Be- und Verarbeitungs- sowie Umlaufeigenschaften von Papier. Schliesslich ist es in einem reinen Druckverfahren nicht möglich, spezielle Sicherheitselemente, beispielsweise Diffraktionsstrukturen, zu erzeugen.It is also known from Australian banknotes to print transparent supports on the surface in such a way that a certain area is window-like, i.e. transparent, is left. However, here too it is important to forego the advantages of paper. For example, it is not possible to add a watermark. There are also different tactile properties (lack of special grip) compared to paper, which are known to the citizen. The proven processing, processing and circulating properties of paper are also eliminated. Finally, it is not possible in a pure printing process to produce special security elements, for example diffraction structures.

Aus der EP-A-0 013 557 ist ein Wertdokument bekannt, das aus einem Träger besteht, der ein Fensterloch aufweist, in das ein Sicherungsmerkmal eingesetzt ist, und der durch äussere transparente Folien kaschiert wird.From EP-A-0 013 557 a document of value is known which consists of a carrier which has a window hole into which a security feature is inserted and which is laminated by outer transparent films.

Es ist auch bereits bekannt, in Wertdokumenten Sicherheitsfäden als Sicherheitselemente anzubringen, wobei die Anordnung so ist, dass der Faden bzw. ein entsprechendes Band bereichsweise oberflächlich freigelegt ist, um zusätzliche. vorzugsweise auf optischen Effekten beruhende Sicherheitsmerkmale auf dem Faden bzw. Band, z.B. Druckmuster, Beugungsstrukturen etc. prüfen zu können. Die EP-PS 0 229 645 beschreibt die Herstellung eines Sicherheitspapiers mit einem eingelagerten Sicherheitselement in Form eines Fadens oder Bandes derart, dass zwei getrennte Papierlagen gebildet werden, wobei die Papierlagen Bereiche geringerer Dicke oder Durchbrechungen aufweisen. Die beiden Papierlagen werden zusammengeführt und während des Zusammenführens wird das als Sicherheitselement dienende Band eingeführt. Dabei kann die Anordnung auch so gewählt werden, dass die Durchbrechungen der beiden Papierlagen (auf der Ober- bzw. Unterseite des als Sicherheitselement dienenden Bandes) deckungsgleich übereinanderfallen, so dass das Sicherheitselement an der gleichen Stelle der Papierbahn auf beiden Seiten freigelegt wird, um eine Betrachtung des Sicherheitselements auch im Durchlicht zu ermöglichen. In der Praxis hat sich jedoch gezeigt, dass es bisher nicht möglich war, entsprechende Dokumente herzustellen. Im allgemeinen ist vielmehr die Anordnung nur so gewählt worden, dass der Sicherheitsfaden bzw. das Sicherheitselement jeweils abwechselnd auf der Ober- bzw. Unterseite freigelegt wurde. Ein wesentlicher Mangel der bekannten Vorgehensweise ist auf jeden Fall darin zu sehen, dass die Sicherheitsfäden, nachdem sie in die Papierbahn eingearbeitet werden müssen, nur verhältnismässig geringe Breite aufweisen dürfen, um den Zusammenhalt des Papiers an sich nicht zu stören. Damit die Sicherheitsfäden jedoch trotz ihrer geringen Breite hinreichende Zugfestigkeit besitzen, ist es erforderlich, Sicherheitsfäden mit entsprechend grosser Dicke einzusetzen, was zu unerwünschten Verdickungen der aus der entsprechenden Papierbahn hergestellten Wertpapiere führen kann, wobei diese Verdickungen bei gestapelten Wertpapieren - trotz der sog. Wobbel-Technik - sich stets in einem relativ schmalen Bereich befinden würden, was zu einer schlechten Planlage der Bogen und Problemen bei der Verarbeitung des Dokumentes führt.It is also already known to attach security threads as security elements in documents of value, the arrangement being such that the thread or a corresponding band is partially exposed on the surface, for additional. to be able to test preferably security features based on optical effects on the thread or tape, for example printing patterns, diffraction structures, etc. EP-PS 0 229 645 describes the production of a security paper with an embedded security element in the form of a thread or tape in such a way that two separate paper layers are formed, the paper layers having areas of reduced thickness or openings. The two layers of paper are brought together and during the bringing together the tape serving as a security element is inserted. The arrangement can also be chosen so that the openings in the two layers of paper (on the top and bottom of the tape serving as a security element) overlap one another, so that the security element is exposed on both sides of the paper web by one To allow viewing of the security element also in transmitted light. In practice, however, it has been shown that it has so far not been possible to produce corresponding documents. In general, the arrangement has rather only been chosen such that the security thread or the security element was alternately exposed on the top or bottom. A major deficiency of the known procedure is in any case to be seen in the fact that the security threads, after they have to be worked into the paper web, may only have a relatively small width in order not to disturb the cohesion of the paper itself. However, in order for the security threads to have sufficient tensile strength despite their narrow width, it is necessary To use security threads with a correspondingly large thickness, which can lead to undesirable thickening of the securities produced from the corresponding paper web, these thickenings in the case of stacked securities - despite the so-called wobble technique - always being in a relatively narrow range, which leads to a bad one Flatness of the sheets and problems with the processing of the document leads.

Der Erfindung liegt daher die Aufgabe zugrunde, ein Wertdokument mit einem fensterartigen, für Durchlicht geeigneten Sicherheitselement vorzuschlagen, das leicht und ohne Beeinträchtigung der Erkennbarkeit des Sicherheitselementes herstellbar ist, wobei bei der Herstellung nicht die bei der Produktion von Sicherheitspapieren mit eingelagertem Sicherheitsfaden bekannten Probleme zu erwarten sind. Es soll jedoch gewährleistet sein, dass eine Fälschung des Sicherheitselementes durch reines Drucken oder Farbkopieren unmöglich ist, gleichzeitig aber eine Vielzahl unterschiedlicher Gestaltungsmöglichkeiten für das Sicherheitselement bestehen.The invention is therefore based on the object of proposing a document of value with a window-like security element which is suitable for transmitted light and which can be produced easily and without impairing the recognizability of the security element, the problems known in the production of security papers with embedded security thread not being expected during manufacture are. However, it should be ensured that counterfeiting of the security element by pure printing or color copying is impossible, but at the same time there are a multitude of different design options for the security element.

Diese Aufgabe wird erfindungsgemäß durch ein Wertdokument mit den Merkmalen des Patentanspruchs 1 gelöst.This object is achieved according to the invention by a document of value with the features of patent claim 1.

Gemäss der Erfindung wird also nicht mehr versucht, ein Sicherheitselement in den Träger einzulagern. Es wird vielmehr die Durchbrechung bewusst nachträglich in dem Träger angebracht und dann diese Durchbrechung mittels einer zumindest bereichsweise transparenten Abdeckfolie wieder verschlossen, wobei infolge der vollflächigen Befestigung der Abdeckfolie auf der Oberfläche des Trägers eine Ablösung der Abdeckfolie, die ggf. ein z.B. auf optischen Effekten beruhendes Sicherheitsmerkmal trägt, ohne Beschädigung des Trägers praktisch ausgeschlossen ist. Aufgrund der Anordnung gemäss der Erfindung ist es ohne weiteres möglich, eine Abdeckfolie mit vergleichsweise grossen Abmessungen zu
verwenden, was bedeutet, dass mit Abdeckfolien geringer Dicke gearbeitet werden kann. Gleichzeitig bietet ein Vorgehen nach der Erfindung auch die Möglichkeit, Fenster mit relativ grossen Abmessungen vorzusehen, während bei den bekannten, während der Papierherstellung erzeugten Fenstern nur sehr geringe Abmessungen erreichbar waren. Da die Fenster gross sein können, besteht auch dann, wenn zusätzliche Sicherheitselemente vorhanden sind, ohne weiteres die Möglichkeit, einen hinreichend grossen Bereich der Abdeckfolie vollständig durchsichtig zu halten. In diesem Falle wird bei Erstellung einer Kopie mit einem Farbkopierer bzw. einem sonstigen Reproduktionsgerät im Bereich des Fensters der Untergrund durchscheinen, so dass in der Reproduktion an dieser Stelle die Farbe des Hintergrundes erscheint. Auf diese Weise können im allgemeinen Fälschungen leicht festgestellt werden. Weiterhin kann vom Benutzer des Wertdokumentes dessen Echtheit ebenfalls leicht festgestellt werden, da das Vorhandensein bzw. Fehlen eines transparenten Bereichs des Wertdokumentes auch mit dem unbewaffneten Auge ohne weiteres feststellbar ist. Das Überdecken der Durchbrechung des Trägers mittels der Abdeckfolie bietet zum einen den Vorteil, dass trotz des Vorhandenseins einer - oder auch mehrerer - Durchbrechung(en) die Stabilität des Wertdokumentes nicht leidet.
According to the invention, attempts are no longer made to store a security element in the carrier. Rather, the opening is deliberately retrofitted in the carrier and then this opening is closed again by means of an at least partially transparent cover film, and as a result of the full-surface attachment of the cover film to the surface of the carrier, the cover film is detached, which may be based, for example, on optical effects Security feature bears without damage to the carrier is practically excluded. Because of the arrangement according to the invention, it is readily possible to cover a cover with comparatively large dimensions
use, which means that thin films can be used. At the same time, a procedure according to the invention also offers the possibility of providing windows with relatively large dimensions, whereas only very small dimensions could be achieved in the known windows produced during paper production. Since the windows can be large, even if additional security elements are present, there is also the option of keeping a sufficiently large area of the cover film completely transparent. In this case, when a copy is made with a color copier or other reproduction device, the background will show through in the area of the window, so that the color of the background appears at this point in the reproduction. In this way, counterfeits can generally be easily identified. Furthermore, the authenticity of the document of value can also be easily determined by the user, since the presence or absence of a transparent area of the document of value can also be readily ascertained with the unarmed eye. Covering the opening of the carrier by means of the cover film has the advantage that, despite the presence of one or more openings, the stability of the document of value does not suffer.

Zum anderen bietet die Verwendung einer Abdeckfolie weitere Gestaltungsmöglichkeiten für das Sicherheitselement. Variationen des Sicherheitselementes sind weiterhin durch unterschiedliche Formgebung der fensterartigen Durchbrechung bzw. Variation in der Positionierung der Durchbrechung oder Anbringung mehrerer, ggf. unterschiedlich gestalteter Durchbrechungen möglich.On the other hand, the use of a cover film offers further design options for the security element. Variations of the security element are also possible due to the different shape of the window-like opening or variation in the positioning of the opening or attachment of several, possibly different, openings.

Um sowohl ein ungestörtes Stapeln von Wertdokumenten, insbesondere von Wertpapieren wie z.B. Banknoten, zu ermöglichen als auch das Abziehen der Abdeckfolie weitgehend zu erschweren und insbesondere ein unbeabsichtigtes Lösen der Abdeckfolie nach Möglichkeit zu verhindern, ist die Abdeckfolie zweckmässig in einer die fensterartige Durchbrechung einschliessenden Vertiefung der Träger-Oberfläche angeordnet, wobei besonders vorteilhaft der Träger zur Bildung der Vertiefung komprimiert ist. Durch die Komprimierung wird gleichzeitig die Oberfläche des Trägers geglättet, was für bestimmte Sicherheitsmerkmale günstig sein kann. Beispielsweise wird bei der Aufbringung von Sicherheitsmerkmalen in einem Heissprägeverfahren auf Papier deren optische Effizienz durch die verhältnismässig rauhe Papier-Oberfläche vermindert, was bei entsprechender Glättung der als Träger dienenden Papieroberfläche vermieden werden kann.To both undisturbed stacking of value documents, especially of securities such as To enable banknotes, as well as to make it difficult to remove the cover film and, in particular, to prevent the cover film from being unintentionally detached if possible, the cover film is expediently arranged in a recess in the carrier surface which includes the window-like opening, the carrier being particularly advantageous for forming the Depression is compressed. The compression simultaneously smoothes the surface of the carrier, which can be advantageous for certain security features. For example, when security features are applied to paper in a hot stamping process, their optical efficiency is reduced by the relatively rough paper surface, which can be avoided by appropriately smoothing the paper surface serving as a carrier.

In einfacher Weise kann erfindungsgemäss die Durchbrechung mittels eines Stanz- oder Schneidvorganges erzeugt werden, wobei hier die üblichen Stanzverfahren und als Schneidverfahren besonders Laserschneiden erwähnt werden sollen.According to the invention, the opening can be produced in a simple manner by means of a punching or cutting process, with the usual punching methods and as Cutting methods especially laser cutting should be mentioned.

Es ist grundsätzlich möglich, die Vertiefung und die Durchbrechung in getrennten Arbeitsgängen zu erzeugen. Zur Vermeidung von besonderen Einstellarbeiten und um eine gute Ausrichtung der Durchbrechung im Vergleich zur Vertiefung zu erreichen, geht man zweckmässig derart vor, dass die Durchbrechung gemeinsam mit der Vertiefung in einem Arbeitsgang erzeugt ist, was z.B. durch Benutzung geeigneter Werkzeuge, beispielsweise spezieller Präge- und Stanzwalzen erreicht werden kann.In principle, it is possible to create the deepening and the opening in separate work steps. In order to avoid special adjustment work and to achieve a good alignment of the opening compared to the recess, it is expedient to proceed in such a way that the opening is produced together with the recess in one operation, which is e.g. can be achieved by using suitable tools, for example special embossing and punching rollers.

Die Anbringung der Vertiefung sowie die Aufbringung der Abdeckfolie wird dann vereinfacht, wenn sich die Abdeckfolie quer über die gesamte Breite oder Länge des Wertdokumentes erstreckt, d.h. eine Vertiefung von Kante zu Kante vorgesehen ist. In einem derartigen Fall wird nämlich zweckmässigerweise so vorgegangen, dass die Abdeckfolie unter gleichzeitiger Ausbildung der Vertiefung mittels Druck auf den Träger des Wertdokumentes aufgebracht, vorzugsweise in einem Abrollverfahren auf den Träger auflaminiert ist.The application of the depression and the application of the cover film is simplified if the cover film extends across the entire width or length of the document of value, i.e. a recess from edge to edge is provided. In such a case, the procedure is expediently such that the cover film is applied to the carrier of the document of value, while at the same time forming the recess, by means of pressure, preferably laminated onto the carrier in a rolling process.

Bei Verwendung eines Laminiervorganges für das Aufbringen der Abdeckfolie auf das Wertdokument lässt sich eine besonders günstige Fertigungsweise erzielen. Es kann nämlich in einem Durchlauf durch eine entsprechende Maschine zuerst die fensterartige Durchbrechung, ggf. auch mehrere Durchbrechungen, angebracht werden, worauf dann in einem weiteren Schritt die Abdeckfolie auflaminiert wird.When using a lamination process for applying the cover film to the document of value, a particularly favorable production method can be achieved. Namely, the window-like opening, possibly also several openings, can be made in one pass through a corresponding machine, after which the cover film is then laminated on in a further step.

Zur weiteren Verbesserung der Fälschungssicherheit ist erfindungsgemäss vorgesehen, dass zumindest auf einer Seite des Trägers die Abdeckfolie und wenigstens der anschliessende Oberflächenbereich des Wertdokumentes mit einem zusammenhängenden Muster überdruckt sind. Bei einer derartigen Ausgestaltung wird jede Manipulation an der Abdeckfolie sofort sichtbar, weil ohne weiteres ein Druck vorgesehen sein kann, bei dem bereits geringste Verschiebungen deutlich in Erscheinung treten.To further improve counterfeit security, the invention provides that at least on one side of the carrier, the cover film and at least the adjoining surface area of the value document are overprinted with a coherent pattern. With such a configuration, any manipulation of the cover film is immediately visible because pressure can easily be provided at which even the slightest displacements clearly appear.

Um ein Überdrucken der Abdeckfolie zu erleichtern, kann zweckmässigerweise diese wenigstens auf ihrer freien, nicht am Wertdokument bzw. dem dieses bildenden Träger befestigten Seite eine Haftvermittler-(Primer-)Schicht tragen.In order to facilitate overprinting of the cover film, it can expediently carry an adhesion promoter (primer) layer at least on its free side, which is not attached to the value document or the carrier forming it.

Weitere Möglichkeiten zur Verbesserung der Fälschungssicherheit eines Wertdokumentes ergeben sich dann, wenn erfindungsgemäss die Abdeckfolie eine Laminierfolie ist, die aus einem durchsichtigen Trägerfilm und einer auf diesem fest haftenden Dekorschicht besteht, wobei die Dekorschicht, die vorzugsweise mindestens eine Lackschicht umfasst, zumindest in einem Teilbereich der Durchbrechung ebenfalls durchsichtig ist. Die Dekorschicht kann in unterschiedlichen, an sich bekannten Verfahren speziell graphisch gestaltet werden, um so zusätzliche Erkennungsmöglichkeiten für ein Original-Wertdokument zu schaffen. Wichtig ist allerdings stets, dass die Dekorschicht im Bereich der Durchbrechung zumindest teilweise durchsichtig ist, weil nur dann der primär mit der Erfindung angestrebte Effekt erhalten bleibt.Further possibilities for improving the security against forgery of a document of value arise if, according to the invention, the cover film is a laminating film which consists of a transparent carrier film and a decorative layer adhering firmly to it, the decorative layer, which preferably comprises at least one lacquer layer, at least in a partial area of the Opening is also transparent. The decorative layer can be specially designed graphically using various methods known per se, in order to create additional recognition options for an original value document. However, it is always important that the decorative layer in the area of the opening is at least partially transparent, because only then will the effect primarily aimed for by the invention be retained.

Es kann weiterhin zweckmässig sein, dass die Abdeckfolie mit wenigstens einem besonderen, vorzugsweise auf optischen Effekten beruhenden Sicherheitsmerkmal versehen und zumindest ein Teilbereich des Flächenbereiches der Durchbrechung durchsichtig belassen ist, wobei vorteilhafterweise wenigstens ein Sicherheitsmerkmal von einer brechungs- und/oder beugungsoptisch wirksamen Diffraktionsstruktur und/oder Dünnschichtanordnung gebildet ist. Neben solchen Diffraktionsstrukturen oder Dünnschichtanordnungen als Sicherheitsmerkmal kann die Abdeckfolie beispielsweise auch reflektierende Flächen, spezielle Aufdrucke, z.B. in Form von Mikroschrift etc. umfassen. Dabei ist es zweckmässig, wenn wenigstens eines der Sicherheitsmerkmale im Flächenbereich der Durchbrechung angeordnet ist, weil es sich dann beispielsweise um ein solches Sicherheitsmerkmal handeln kann, das nur im Durchlicht hinsichtlich Echtheit geprüft werden kann, wobei gerade Durchlicht-Verfahren bei Einsatz automatischer Prüfgeräte Vorteile ergeben.It can furthermore be expedient for the cover film to be provided with at least one special security feature, preferably based on optical effects, and for at least a partial area of the surface area of the The breakthrough is left transparent, advantageously at least one security feature being formed by a diffraction structure and / or thin-layer arrangement that is effective in terms of refraction and / or diffraction. In addition to such diffraction structures or thin-layer arrangements as a security feature, the cover film can also comprise, for example, reflective surfaces, special imprints, for example in the form of micro-script, etc. It is expedient if at least one of the security features is arranged in the area of the opening, because it can then be, for example, such a security feature that authenticity can only be checked in transmitted light, with transmitted light methods in particular using advantages when using automatic testing devices .

Bei Verwendung einer Laminierfolie als Abdeckfolie, welche eine Dekorschicht sowie wenigstens eine Diffraktionsstruktur als Sicherheitsmerkmal aufweist, wird die Dekorschicht zweckmässig derart aufgebaut, dass sie - ausgehend vom Trägerfilm - eine zumindest bereichsweise an ihrer dem Trägerfilm entfernten Oberfläche mit der als Sicherheitsmerkmal dienenden Diffraktionsstruktur versehene Grundlackschicht, wenigstens im Bereich der Diffraktionsstruktur eine reflektierende Schicht, sowie zumindest im Bereich der Durchbrechung eine transparente Schutzlackschicht umfasst. Insofern stimmt der Aufbau der Dekorschicht bei der Laminierfolie gemäss der Erfindung grundsätzlich mit dem an sich von Heissprägefolien für Sicherheitszwecke mit Diffraktionsstruktur bekannten, z.B. der EP 0 559 069 A1 zu entnehmenden Dekorschicht-Aufbau überein. Es können auch zur Aufbringung der diversen Lackschichten, zur Einbringung der Diffraktionsstruktur sowie zur Erzeugung der unter Umständen nur teilweisen Metallisierung die im Zusammenhang mit der Heissprägefolien-Herstellung grundsätzlich bekannten Verfahren verwendet werden, weshalb auf diese Verfahren hier nicht näher eingegangen werden soll. Selbstverständlich wäre es auch denkbar, eine Diffraktionsstruktur direkt in die Trägerfolie einzubringen, also auf eine besondere Grundlackschicht zu verzichten, wenn eine geeignete Trägerfolie verwendet wird.When using a laminating film as a covering film, which has a decorative layer and at least one diffraction structure as a security feature, the decorative layer is expediently constructed in such a way that - starting from the carrier film - it has an at least partially removed surface of the carrier film provided with the diffraction structure serving as a security feature, comprises a reflective layer at least in the region of the diffraction structure and a transparent protective lacquer layer at least in the region of the opening. In this respect, the structure of the decorative layer in the laminating film according to the invention basically corresponds to the decorative layer structure known per se from hot stamping foils for security purposes with a diffraction structure, for example EP 0 559 069 A1. It can also be used to apply the various layers of lacquer, to introduce the diffraction structure and to produce some of the layers Metallization, the processes known in principle in connection with the production of hot stamping foils are used, which is why these processes will not be discussed in more detail here. Of course, it would also be conceivable to incorporate a diffraction structure directly into the carrier film, that is to say to dispense with a special base lacquer layer if a suitable carrier film is used.

Ist, wie nach der Erfindung weiter vorgesehen, die Abdeckfolie derart auf dem Träger befestigt, dass ihre Dekorschicht zur Oberfläche des Trägers weist, erhält man zum einen den Vorteil, dass die die Dekorschicht tragende Oberfläche der Abdeckfolie quasi vertieft und damit in gewissem Umfange gegen mechanische Beanspruchung geschützt angeordnet ist. Darüberhinaus kann unter Umständen auf eine besondere Kleberschicht für die Befestigung der Abdeckfolie auf dem Wertdokument verzichtet werden, nämlich dann, wenn die Dekorschicht, und zwar zumindest deren transparente Schutzlackschicht, bereits hinreichend klebende Eigenschaften besitzt.If, as further provided according to the invention, the cover film is fastened to the carrier in such a way that its decorative layer faces the surface of the carrier, one obtains the advantage that the surface of the cover film carrying the decorative layer is practically deepened and thus to a certain extent against mechanical ones Stress is arranged protected. In addition, a special adhesive layer for attaching the cover film to the document of value may be dispensed with, namely when the decorative layer, at least its transparent protective lacquer layer, already has sufficiently adhesive properties.

Eine weitere Möglichkeit gemäss der Erfindung besteht darin, dass die Dekorschicht auf der dem Trägerfilm gegenüberliegenden Seite eine Schicht eines aushärtbaren Klebers trägt, wobei z.B. Reaktionskleber verwendet werden können, die erst unter entsprechender Wärme- oder Strahlungseinwirkung, z.B. von IR- oder UV-Strahlung, vollständig ausreagieren und damit aushärten. Die Verwendung derartiger Kleber hat den Vorzug, dass ein Ablösen der Abdeckfolie, wenn der Kleber ausgehärtet ist, ohne Beschädigung des Wertdokumentes selbst ausgeschlossen ist.A further possibility according to the invention is that the decorative layer carries a layer of a curable adhesive on the side opposite the carrier film, it being possible, for example, to use reaction adhesives which are only exposed to the appropriate heat or radiation, for example IR or UV radiation. fully react and harden. The use of such adhesives has the advantage that detachment of the cover film when the adhesive has hardened is impossible without damaging the value document itself.

Es kann schliesslich vorteilhaft sein, wenn der Träger in dem zur Befestigung der Abdeckfolie dienenden Bereich einen Kleberauftrag aufweist, wobei es unter Umständen genügt, nur diesen Kleberauftrag am Träger vorzusehen, es allerdings auch zweckmässig sein kann, wenn trotz des Kleberauftrags am Träger zusätzlich die Abdeckfolie mit einer entsprechenden Kleberschicht versehen ist. Wenn nur der Träger mit dem Kleberauftrag versehen ist, erreicht man den Vorteil, dass eventuelle Kleberverschleppungen im Bereich der Durchbrechung vermieden werden können.Finally, it can be advantageous if the carrier has an adhesive application in the area used to fasten the covering film, although it may be sufficient to provide only this adhesive application on the carrier, but it may also be expedient if the covering film is additionally provided despite the adhesive application on the carrier is provided with an appropriate adhesive layer. If only the carrier is provided with the adhesive application, the advantage is achieved that possible carryover of glue in the area of the opening can be avoided.

Weitere Merkmale, Einzelheiten und Vorteile der Erfindung ergeben sich aus der folgenden Beschreibung eines erfindungsgemäss ausgebildeten Wertpapieres anhand der Zeichnung, in der zeigen -:

Figur 1
eine schematische Ansicht eines Wertpapieres in der Ausgestaltung gemäss der Erfindung,
Figur 2
einen Teil-Querschnitt durch das Wertpapier der Figur 1 nach Linie II-II in Figur 1, und
Figur 3
einen Schnitt nach Linie III-III in Figur 1 durch ein Ausführungsbeispiel einer Abdeckfolie, wobei der Anschaulichkeit halber der Papierträger des Wertpapieres weggelassen ist.
Further features, details and advantages of the invention result from the following description of a security designed according to the invention with reference to the drawing, in which:
Figure 1
2 shows a schematic view of a security in the configuration according to the invention,
Figure 2
a partial cross section through the security of Figure 1 along line II-II in Figure 1, and
Figure 3
a section along line III-III in Figure 1 by an embodiment of a cover sheet, the clarity of the paper carrier of the security is omitted.

Das in Figur 1 schematisch gezeigte Wertpapier 1 kann hinsichtlich seiner grundsätzlichen Gestaltung (im Sinne der Erfindung) für alle möglichen Arten von Wert-Drucksachen, z.B. Banknoten, Schecks, Reiseschecks, Aktien etc. verwendet werden, wobei in der Zeichnung keine näheren Einzelheiten dargestellt und ausser den erfindungswesentlichen Sicherheitselementen auf sonst mögliche Sicherungsmassnahmen nicht näher eingegangen ist. Weiterhin ist ein grundsätzlich entsprechender Aufbau auch für andere Wertdokumente, z.B. Kreditkarten, Ausweise od.dgl. vorgesehen.The security 1 shown schematically in FIG. 1 can be used with regard to its basic design (in the sense of the invention) for all possible types of printed matter, for example bank notes, checks, travelers checks, shares etc., none of which are shown in the drawing Details are shown and apart from the security elements essential to the invention, other possible security measures have not been discussed in detail. Furthermore, there is a fundamentally corresponding structure for other value documents, for example credit cards, ID cards or the like. intended.

Das Wertpapier gemäss Figur 1 besteht aus einem Papierträger 2, der beispielsweise in der von Banknoten bekannten Weise mit einem Wasserzeichen, mit speziellen Aufdrucken und sonstigen Sicherheitselementen, wie eines beispielsweise bei 3 schematisch angedeutet ist, versehen sein kann. Das Sicherheitselement 3 kann beispielsweise die Form eines speziellen Mikrodruckes haben. Es kann aber auch eine bestimmte Prägung, eine reflektierende Prägung, etc. sein. Der Papierträger 2 ist normalerweise bei Herstellung des Wertpapiers 1 Teil einer Papierbahn oder eines Papierbogens, aus der bzw. dem das Wertpapier 1 nach Fertigstellung geschnitten wird. Bei anderen Wertdokumenten als Wertpapieren wird ein anderer geeigneter, ggf. bereits Sicherheitselement aufweisender Träger, z.B. eine Kunststoff-Karte oder -Folie verwendet.The security according to FIG. 1 consists of a paper carrier 2, which can be provided, for example in the manner known from banknotes, with a watermark, with special imprints and other security elements, such as one schematically indicated at 3. The security element 3 can have the form of a special microprint, for example. But it can also be a specific embossing, a reflective embossing, etc. The paper carrier 2 is normally part of a paper web or a paper sheet from which the security 1 is cut after completion when the security 1 is produced. In the case of documents of value other than securities, another suitable carrier, which may already have a security element, is used, e.g. a plastic card or film is used.

Gemäss Figuren 1 und 2 weist der Träger 2 wenigstens eine fensterartige Durchbrechung 4 auf, die mittels einer Abdeckfolie 5 verschlossen ist, wobei die Abdeckfolie 5 auf der einen Oberfläche 6 des Trägers 2 vollflächig so befestigt, vorzugsweise aufgeklebt ist, dass sie die fensterartige Durchbrechung 4, wie aus Figuren 1 und 2 ersichtlich, allseits überragt, so dass rund um die Durchbrechung 4 in den Bereichen 7 (Figur 2) die Abdeckfolie 5 fest an der Oberfläche 6 des Trägers 2 haftet.According to FIGS. 1 and 2, the carrier 2 has at least one window-like opening 4, which is closed by means of a cover film 5, the cover film 5 being attached to the entire surface 6 of the carrier 2, preferably being glued on, such that it opens the window-like opening 4 As can be seen from FIGS. 1 and 2, it projects beyond on all sides, so that the covering film 5 adheres firmly to the surface 6 of the carrier 2 around the opening 4 in the regions 7 (FIG. 2).

Insbesondere aus Figur 2 ist ersichtlich, dass die Abdeckfolie in einer Vertiefung 8 der Oberfläche 6 des Trägers 2 angeordnet ist, so dass die Abdeckfolie bei dem fertigen Wertpapier 1 zu keiner wesentlichen Vergrösserung der Dicke des Wertdokumentes führt, was vor allem wichtig ist, wenn eine Vielzahl von Wertdokumenten gestapelt werden soll. Die bisher bei Wertpapieren bekannten Sicherheitsfäden sind nur relativ schmal und müssen deswegen aus mechanischen Gründen vergleichsweise dick sein. Sie stehen dann aber über die Wertpapier-Oberfläche weit vor und führen beim Stapeln von Wertdokumenten im Bereich der Sicherheitsfäden zu einer unerwünschten und ggf. die Fertigung und automatische Handhabung der Wertpapiere erschwerenden Verdickung der Stapel.It can be seen in particular from FIG. 2 that the cover film is arranged in a recess 8 in the surface 6 of the carrier 2, so that the cover film in the finished security 1 does not lead to a substantial increase in the thickness of the value document, which is particularly important if one Variety of documents of value to be stacked. The security threads previously known for securities are only relatively narrow and therefore have to be comparatively thick for mechanical reasons. However, they then protrude far beyond the surface of the security and, when stacking security documents in the area of the security threads, lead to an undesirable thickening of the stack, which may complicate the production and automatic handling of the security.

Die Vertiefung 8 ist dadurch erzeugt, dass der Papierträger 2 im Bereich der Vertiefung 8 komprimiert ist. Dies kann in einfacher Weise gleichzeitig mit dem Aufbringen der Abdeckfolie 5 auf die Oberfläche 6 des Trägers 2 erfolgen, indem nämlich beim Aufbringen der Abdeckfolie 5 auf die Oberfläche 6 des Trägers 2 ein entsprechend hoher Druck ausgeübt wird, der zu einer bleibenden Kompression des Trägers 2 führt.The depression 8 is produced in that the paper carrier 2 is compressed in the area of the depression 8. This can be done in a simple manner simultaneously with the application of the cover film 5 to the surface 6 of the carrier 2, namely by applying a correspondingly high pressure when the cover film 5 is applied to the surface 6 of the carrier 2, resulting in permanent compression of the carrier 2 leads.

Wie Figur 1 erkennen lässt, erstreckt sich die Vertiefung 8 für die Abdeckfolie 5 über die gesamte Breite des Trägers 2 von dessen Unterkante 9 zur Oberkante 10. Diese Ausbildung hat den Vorteil, dass sowohl die Aufbringung der Abdeckfolie 5 als auch die Ausbildung der Vertiefung 8 in einem Abrollverfahren mittels entsprechender Walzen bzw. Rollen erfolgen können, was die Möglichkeit bietet, das Wertpapier 1 in einem kontinuierlichen Verfahren mit der Abdeckfolie 5 zu versehen, wobei in einem der Aufbringung der Abdeckfolie 5 vorhergehenden Schritt die fensterartige Durchbrechung durch Stanzen, was ja ebenfalls in einem Abrollverfahren erfolgen kann, erzeugt werden kann. Der Stanzvorgang kann hierbei, sofern das Werkzeug entsprechend gestaltet wird, mit dem Kompressionsvorgang in einem Arbeitsgang kombiniert werden.As can be seen in FIG. 1, the depression 8 for the cover film 5 extends over the entire width of the carrier 2 from its lower edge 9 to the upper edge 10. This design has the advantage that both the application of the cover film 5 and the design of the recess 8 can take place in a roll-off process by means of corresponding rollers or rolls, which offers the possibility of providing the security 1 with the cover film 5 in a continuous process, the window-like step being carried out in a step preceding the application of the cover film 5 Breakthrough by punching, which can also be done in a rolling process. The punching process can, if the tool is designed accordingly, be combined with the compression process in one operation.

Die Figur 1 zeigt, dass die Abdeckfolie 5 nur in einem Teilbereich der fensterartigen Durchbrechung 4, nämlich dem äusseren Bereich 11, transparent ist, während im inneren Bereich der Durchbrechung 4 ein zusätzliches, z.B. auf optischen Effekten beruhendes Sicherheitsmerkmal 12, z.B. in Form einer bei Transmission wirksamen Diffraktionsstruktur, vorgesehen ist. Das zusätzliche Sicherheitsmerkmal 12 in der fensterartigen Durchbrechung 4 kann aber nicht nur von einer brechungs- und/oder beugungsoptisch wirksamen Diffraktionsstruktur, beispielsweise einem Hologramm, Pixelgram etc., gebildet werden. Es wäre auch denkbar, als zusätzliches Sicherheitsmerkmal 12 beispielsweise eine reflektierende Fläche, einen besonderen Mikrodruck, eine Dünnschichtanordnung oder eine sonstige Gestaltung, die nur schwer nachzuahmen ist, zu wählen.FIG. 1 shows that the cover film 5 is only transparent in a partial area of the window-like opening 4, namely the outer area 11, while in the inner area of the opening 4 an additional, e.g. Security feature 12 based on optical effects, e.g. in the form of a diffraction structure effective in transmission. The additional security feature 12 in the window-like opening 4 can, however, not only be formed by a diffraction structure having an optical refractive and / or diffractive effect, for example a hologram, pixel gram, etc. It would also be conceivable to choose, for example, a reflective surface, a special microprint, a thin-layer arrangement or some other design that is difficult to imitate as additional security feature 12.

Weiterhin kann die Abdeckfolie, wie in Figur 1 angedeutet, ausserhalb des der fensterartigen Durchbrechung entsprechenden Bereiches mit mindestens einem zusätzlichen, z.B. auf optischen Effekten beruhenden Sicherheitsmerkmal 13 versehen sein, wobei dieses Sicherheitsmerkmal 13 ebenfalls abhängig von dem Material der Abdeckfolie, deren eventueller Beschichtung etc. auf die verschiedenste Art und Weise gestaltet sein kann.Furthermore, as indicated in FIG. 1, the cover film can be provided outside the area corresponding to the window-like opening with at least one additional, e.g. be provided on the basis of optical effects security feature 13, which security feature 13 can also be designed in a wide variety of ways depending on the material of the cover film, its possible coating, etc.

Ein unerwünschtes Lösen der Abdeckfolie 5 von der Oberfläche 6 des Trägers 2 wird erfindungsgemäss weiter dadurch erschwert, dass die Abdeckfolie 5 sowie die anschliessenden Bereiche der Oberfläche 6 des Trägers 2 mit einem zusammenhängenden Muster 14 überdruckt sind. Dieser Aufdruck des Musters 14 kann ebenfalls in dem bereits erwähnten, kontinuierlichen Verfahren in einem der Aufbringung der Abdeckfolie 5 nachgeschalteten Verfahrensschritt erfolgen.An undesired detachment of the cover film 5 from the surface 6 of the carrier 2 is further increased according to the invention complicated by the fact that the cover film 5 and the adjoining areas of the surface 6 of the carrier 2 are overprinted with a coherent pattern 14. This pattern 14 can also be printed in the continuous process already mentioned in a process step following the application of the cover film 5.

Aus Vorstehendem ergibt sich, dass ein Wertdokument, z.B. ein Wertpapier 1 gemäss der Erfindung gegenüber den bisher bekannten Wertdokumenten eine Vielzahl weiterer Möglichkeiten zur Ausbildung von Sicherheitsmerkmalen bietet, wobei jedoch stets gewährleistet sein muss, dass im Bereich der wenigstens einen fensterartigen Durchbrechung 4 - selbstverständlich könnten auch mehrere Durchbrechungen vorgesehen sein - die Abdeckfolie 5 zumindest bereichsweise transparent ist, weil nur dann eine leichte Überprüfung mit dem blossen Auge möglich ist und nur in einem solchen Falle bei dem Versuch der Vervielfältigung mittels Farbkopierens oder Druckens in dem transparenten Bereich innerhalb der Durchbrechung 4 eine optische Verfälschung auftritt. Diese Verfälschung erhält man ja völlig unabhängig davon, welche Farbe beim Kopieren für den Hintergrund gewählt wird, weil in jedem Falle der entsprechende Bereich nicht transparent ist.It follows from the above that a document of value, e.g. a security 1 according to the invention offers a multitude of further possibilities for forming security features compared to the previously known security documents, but it must always be ensured that in the area of the at least one window-like opening 4 - of course, several openings could also be provided - the cover film 5 at least is transparent in some areas because only then can it be easily checked with the naked eye and only in such a case does an optical falsification occur in the attempt to reproduce by means of color copying or printing in the transparent area within the opening 4. This distortion is obtained regardless of which color is selected for the background when copying, because in any case the corresponding area is not transparent.

In Figur 3 ist eine Laminierfolie schematisch gezeigt, wie sie als Abdeckfolie 5 für das Wertpapier 1 der Figuren 1 und 2 verwendet werden kann.FIG. 3 schematically shows a laminating film as it can be used as a covering film 5 for the security 1 of FIGS. 1 and 2.

Diese Abdeckfolie 5 der Figur 3 besteht aus einem durchsichtigen Trägerfilm 15. Dieser ist auf seiner der Dekorschicht 16 abgekehrten Oberfläche mit einer dünnen Haftvermittlerschicht 17, die gewährleisten soll, dass das aufgedruckte Muster 14 auf dem Trägerfilm 15 gut haftet, versehen.This cover film 5 of FIG. 3 consists of a transparent carrier film 15. This is on its surface facing away from the decorative layer 16 with a thin adhesive layer 17, which is intended to ensure that the printed pattern 14 adheres well to the carrier film 15, provided.

Auch die gegenüberliegende Oberfläche des Trägerfilms 15 ist mit einer Haftvermittlerschicht 18 versehen, die ein hinreichendes Haften der Dekorschicht 16 auf dem Trägerfilm 15 gewährleisten soll.The opposite surface of the carrier film 15 is also provided with an adhesion promoter layer 18, which is intended to ensure that the decorative layer 16 adheres sufficiently to the carrier film 15.

Bei dem Ausführungsbeispiel der Figur 3 ist die Dekorschicht 16 - entsprechend der Darstellung in Figur 1 - mit unterschiedlichen Sicherheitsmerkmalen 12, 13 versehen, wobei es sich in beiden Fällen um Diffraktionsstrukturen gemäss der vorstehenden Erläuterung handelt.In the exemplary embodiment in FIG. 3, the decorative layer 16 — as shown in FIG. 1 — is provided with different security features 12, 13, both of which are diffraction structures as described above.

Zu diesem Zweck weist die Dekorschicht 16 eine thermoplastisch verformbare Grundlackschicht 19 auf. In dieser Grundlackschicht 19 sind in den den Sicherheitsmerkmalen 12, 13 entsprechenden Bereichen unterschiedliche Diffraktionsstrukturen 20 bzw. 21 ausgebildet, wobei diese Diffraktionsstrukturen 20, 21 durch entsprechendes Prägen der thermoplastisch verformbaren Grundlackschicht 19 nach deren Aufbringung auf dem Trägerfilm 15 erzeugt werden.For this purpose, the decorative layer 16 has a thermoplastic deformable base lacquer layer 19. Different diffraction structures 20 and 21 are formed in this base lacquer layer 19 in the areas corresponding to the security features 12, 13, these diffraction structures 20, 21 being produced by appropriately embossing the thermoplastic deformable base lacquer layer 19 after it has been applied to the carrier film 15.

Die Diffraktionsstrukturen 20, 21 sind natürlich bei der Abdeckfolie 5 nur sichtbar, wenn die die Diffraktionsstrukturen 20, 21 umschliessenden Schichten entsprechend unterschiedliche optische Eigenschaften besitzen. Dies wird beispielsweise bei der Diffraktionsstruktur 20 des Sicherheitsmerkmals 12 dadurch erreicht, dass im Bereich der Diffraktionsstruktur 20 eine reflektierende Metallbeschichtung 22 vorgesehen ist, wobei es sich bei der Metallschicht 22 z.B. um eine im Vakuum aufgedampfte Aluminiumschicht oder eine in geeigneter Weise aufgebrachte Schicht eines sonstigen, als geeignet bekannten Materials handeln kann.The diffraction structures 20, 21 are of course only visible in the cover film 5 if the layers surrounding the diffraction structures 20, 21 have correspondingly different optical properties. This is achieved, for example, in the case of the diffraction structure 20 of the security feature 12 in that a reflective metal coating 22 is provided in the region of the diffraction structure 20, the metal layer 22 being, for example, an aluminum layer vapor-deposited in a vacuum or in a suitable manner applied layer of another material known to be suitable can act.

Eine andere Möglichkeit zur Sichtbarmachung der Diffraktionsstrukturen 20, 21 besteht darin, dass im Bereich der Diffraktionsstrukturen 20, 21 eine geeignetes Dielektrikum, z.B. TiO2 oder TnS, angebracht wird.Another possibility for making the diffraction structures 20, 21 visible is that a suitable dielectric, for example TiO 2 or TnS, is attached in the region of the diffraction structures 20, 21.

Die Diffraktionsstruktur ist bei der Abdeckfolie 5 dann mittels einer transparenten Schutzlackschicht 23 abgedeckt, die wiederum eine Haftvermittlerschicht 24, zumindest im Bereich der Durchbrechung 4, tragen kann, wobei die Haftvermittlerschicht 24 vor allem die Aufgabe hat, das Anhaften der Abdeckfolie 5 auf der Oberfläche 6 des Trägers 2 zu begünstigen. Daneben kann sie aber auch eine eventuell - bei entsprechend dünnen Wertdokumenten oder grossen Durchbrechungen - nachfolgende Bedruckung auf der der Oberfläche 6 des Trägers 2 abgekehrten Seite der Abdeckfolie im Bereich der Durchbrechung(en) 4 begünstigen.The diffraction structure in the cover film 5 is then covered by a transparent protective lacquer layer 23, which in turn can carry an adhesive layer 24, at least in the area of the opening 4, the adhesive layer 24 primarily having the task of adhering the cover film 5 to the surface 6 to favor the carrier 2. In addition, however, it can also favor a possible subsequent printing on the side of the cover film facing away from the surface 6 of the carrier 2 in the area of the opening (s) 4, with correspondingly thin value documents or large openings.

Während die Schutzlackschicht 23 üblicherweise - zur Erleichterung der Identifikation des Sicherheitselementes - farblos ist, kann durchaus vorgesehen sein, dass das zweite Sicherheitsmerkmal 13 sich neben seiner Diffraktionswirkung durch eine besondere Farbgebung auszeichnet. Dies wird bei der Folie der Figur 3 beispielsweise dadurch erreicht, dass die Diffraktionsstruktur 21 des Sicherheitsmerkmals 13 vor Aufbringung der Schutzlackschicht 23 mit einer transparenten, jedoch eingefärbten Lackschicht 25 abgedeckt ist.While the protective lacquer layer 23 is usually colorless, in order to facilitate identification of the security element, it can certainly be provided that the second security feature 13 is distinguished by a special coloring in addition to its diffraction effect. In the case of the film in FIG. 3, this is achieved, for example, in that the diffraction structure 21 of the security feature 13 is covered with a transparent but colored lacquer layer 25 before the protective lacquer layer 23 is applied.

Im einzelnen könnte eine Abdeckfolie 5 gemäss Figur 3 wie folgt aufgebaut sein -:In detail, a cover film 5 according to FIG. 3 could be constructed as follows:

Haftvermittlerschichten 17 18 und 24 -:Adhesion layers 17 18 and 24 -:

Diese Schichten haben eine Stärke von 0,2 bis 2, vorzugsweise 0,5 bis 1,2 µm. Auf die Haftvermittlerschichten 17 und 24 kann ggf., und zwar vor allem dann, wenn ein nachträgliches Überdrucken der Abdeckfolie nicht in Betracht gezogen ist, verzichtet werden.These layers have a thickness of 0.2 to 2, preferably 0.5 to 1.2 microns. Adhesion promoter layers 17 and 24 may be dispensed with, especially if subsequent overprinting of the cover film is not considered.

Die Haftvermittlerschichten werden in einem an sich bekannten Druckverfahren aufgebracht, wobei sie wie folgt zusammengesetzt sein können -: Gew.-Teile Methylethylketon 400 Toluol 250 Cyclohexanon 50 Hydroxylgruppenhaltiges Vinylchlorid-Vinylacetat-Terpolymer (Tg = 79 °C, MG ca. 23.000) 210 Vinylchlorid-Vinylacetat Copolymer (MG ca. 4.000) 90 The adhesion promoter layers are applied in a printing process known per se, whereby they can be composed as follows: Parts by weight Methyl ethyl ketone 400 toluene 250 Cyclohexanone 50 Hydroxyl group-containing vinyl chloride-vinyl acetate terpolymer (Tg = 79 ° C, MW approx.23,000) 210 Vinyl chloride-vinyl acetate copolymer (MW approx.4,000) 90

Trägerfilm 15 -:Carrier film 15 -:

Hierbei handelt es sich um einen optisch klaren, d.h. einwandfrei durchsichtigen, geeigneten Film, der möglichst dünn sein sollte, um am Wertpapier nicht aufzutragen, andererseits jedoch hinreichende Festigkeit besitzen muss. Als geeignet haben sich Polyester-(PET) oder Polycarbonat-(PC)Filme einer Stärke zwischen 6 und 12 µm erwiesen.This is an optically clear, ie perfectly transparent, suitable film, which should be as thin as possible so as not to stick to the security, but on the other hand must have sufficient strength. Polyester (PET) or polycarbonate (PC) films with a thickness between 6 and 12 µm have proven to be suitable.

Thermoplastisch verformbare Grundlackschicht 19 -:Thermoplastic deformable base coat 19 -:

Diese Schicht hat eine Stärke von üblicherweise 0,8 bis 2 µm, wobei die Schichtstärke von der Art der einzubringenden Struktur abhängt. Auch die Grundlackschicht 19 wird in einem Druckverfahren aufgebracht und kann etwa wie folgt zusammengesetzt sein -: Gew.-Teile Ethylacetat 350 Toluol 200 Butylacetat 130 Polymethylmethacrylat (Erweichungspunkt ca. 170 °C) 270 Styrol-Copolymerisat (Erweichungspunkt ca. 100 °C) 50 This layer usually has a thickness of 0.8 to 2 μm, the layer thickness depending on the type of structure to be introduced. The base lacquer layer 19 is also applied in a printing process and can be composed approximately as follows: Parts by weight Ethyl acetate 350 toluene 200 Butyl acetate 130 Polymethyl methacrylate (softening point approx. 170 ° C) 270 Styrene copolymer (softening point approx. 100 ° C) 50

Diffraktionsstrukuren 20, 21 -:Diffraction structures 20, 21 -:

Diese Strukturen sind an sich bekannt und werden mittels entsprechender Matrizen in die Grundlackschicht 19 eingeprägt. Die Metallisierung 22 besteht beispielsweise aus im Vakuum aufgebrachtem Aluminium, Chrom, Gold oder Silber, wobei abhängig von dem verwendeten Material die Zerkleinerung durch geeignete Verfahren, z.B. durch Verdampfen, Sputtern, etc. erfolgen kann. Statt der Metallschicht kann auch ein geeignetes Dielektrikum, z.B. TiO2 oder ZnS, aufgebracht werden. Zweckmässig wird eine Metallisierung über die gesamte, entsprechend verformte Oberfläche der thermoplastischen Grundlackschicht 19 aufgebracht und dann in einem bekannten Verfahren teilweise entfernt. Dabei gibt es unterschiedliche Verfahren, wobei insbesondere solche Verfahren Anwendung finden, bei denen vor der Aufbringung der Metallschicht die strukturierte Oberfläche der thermoplastischen Grundlackschicht 19 in den nicht strukturierten Bereichen, z.B. durch entsprechend registerhaltiges Drucken, mit einer lösbaren Schicht versehen wird. Nach dem Metallisieren wird dann diese lösbare Schicht und damit im Bereich der lösbaren Schicht die Metallisierung wieder entfernt. Die Stärke der Metallisierung bzw. der Dielektrikum-Schicht beträgt z.B. 60 bis 20 å.These structures are known per se and are embossed into the base lacquer layer 19 by means of appropriate matrices. The metallization 22 consists, for example, of aluminum, chromium, gold or silver applied in a vacuum, and depending on the material used, the comminution can be carried out by suitable methods, for example by evaporation, sputtering, etc. Instead of the metal layer, a suitable dielectric, for example TiO 2 or ZnS, can also be applied. A metallization is expediently applied over the entire, correspondingly deformed surface of the thermoplastic base lacquer layer 19 and then partially in a known method away. There are different methods, in particular those methods are used in which the structured surface of the thermoplastic base lacquer layer 19 is provided with a detachable layer in the unstructured areas, for example by printing in accordance with the register, before the metal layer is applied. After the metallization, this releasable layer and thus the metallization in the region of the releasable layer are then removed again. The thickness of the metallization or the dielectric layer is, for example, 60 to 20 Å.

Transparente Schutzlackschicht 23 -:Transparent protective lacquer layer 23 -:

Diese Schicht hat eine Stärke von 1 bis 5 µm, vorzugsweise von 2 bis 3 µm, wobei in den Bereichen, wo die zusätzliche Lackschicht 25 vorgesehen ist, die Stärke dünner sein kann als in den Bereichen ohne eine derartige zusätzliche Lackschicht. Im übrigen richtet sich die Stärke der Schutzlackschicht 23 nach den jeweiligen mechanischen Anforderungen, wobei diese normalerweise nicht allzu hoch sind, weil zum einen die Grösse der Durchbrechung 4 beschränkt ist und zum anderen die Abdeckfolie 5 vorzugsweise derart auf der Oberfläche 6 des Trägers 2 angebracht wird, dass die Dekorschicht 16 zur Oberfläche 6 des Trägers 2 hinweist, somit die starke mechanische Beanspruchung auf der Seite des Trägerfilms 15 erfolgt.This layer has a thickness of 1 to 5 μm, preferably 2 to 3 μm, it being possible for the thickness in the regions where the additional lacquer layer 25 is provided to be thinner than in the regions without such an additional lacquer layer. Otherwise, the thickness of the protective lacquer layer 23 depends on the respective mechanical requirements, which are normally not too high, because on the one hand the size of the opening 4 is limited and on the other hand the cover film 5 is preferably applied in this way to the surface 6 of the carrier 2 that the decorative layer 16 points to the surface 6 of the carrier 2, so that the strong mechanical stress occurs on the side of the carrier film 15.

Die transparente Schutzlackschicht kann etwa wie folgt zusammengesetzt sein -: Gew.-Teile Methylethylketon 300 Ethylacetat 170 Cyclohexanon 100 Hydrofunktionelles Acrylat (60 % in Xylol/EPA, OH-Zahl 140) 200 Cellulosenitrat (niedrigviskos, 65 % in Alkohol) 80 Aromatisches Isocyanat (50 % in Ethylacetat, NCO-Gehalt 8 %) 150 The transparent protective lacquer layer can be composed as follows -: Parts by weight Methyl ethyl ketone 300 Ethyl acetate 170 Cyclohexanone 100 Hydrofunctional acrylate (60% in xylene / EPA, OH number 140) 200 Cellulose nitrate (low viscosity, 65% in alcohol) 80 Aromatic isocyanate (50% in ethyl acetate, NCO content 8%) 150

Auch die Schutzlackschicht 23 sowie ggf. die zusätzliche Lackschicht 25 werden normalerweise in einem Druckverfahren aufgebracht, wobei die zusätzliche Lackschicht 25 vor der Schutzlackschicht 23 aufzudrucken ist. Hinsichtlich der Zusammensetzung der zusätzlichen, transparenten Lackschicht 25 ist zu vermerken, dass diese im wesentlichen wie die Schutzlackschicht 23 zusammengesetzt sein kann, jedoch zusätzlich einen transparenten Farbstoff enthält.The protective lacquer layer 23 and, if appropriate, the additional lacquer layer 25 are also normally applied in a printing process, the additional lacquer layer 25 being to be printed on before the protective lacquer layer 23. With regard to the composition of the additional, transparent lacquer layer 25, it should be noted that it can be composed essentially like the protective lacquer layer 23, but additionally contains a transparent dye.

Bei der Herstellung eines Wertdokumentes, z.B. eines Wertpapieres 1 gemäss der Erfindung wird somit zuerst die Abdeckfolie 5, beispielsweise in einer grundsätzlich von der Herstellung von Heissprägefolien her bekannten Weise, erzeugt, wobei der Unterschied zwischen der Abdeckfolie 5 und einer Heissprägefolie jedoch darin besteht, dass bei der Abdeckfolie 5 dafür Sorge getragen wird, dass die Dekorschicht 16 fest an dem Trägerfilm 15 haftet, während das Wesen einer Heissprägefolie ja gerade darin zu sehen ist, dass die Dekorschicht leicht von dem Trägerfilm abgelöst werden kann.When producing a document of value, for example a security 1 according to the invention, the cover film 5 is thus first produced, for example in a manner which is fundamentally known from the production of hot stamping films, the difference between the cover film 5 and a hot stamping film, however, being that care is taken with the cover film 5 that the decorative layer 16 adheres firmly to the carrier film 15, while the essence of a hot stamping film can be seen precisely in the fact that the decorative layer can easily be detached from the carrier film.

Die Abdeckfolie wird dann vorzugsweise in einem kontinuierlichen Abrollvorgang auf den Träger 2 des Wertdokumentes, z.B. Wertpapieres 1 aufgebracht, wobei zweckmässig in einem ersten Arbeitsgang die fensterartige Durchbrechung 4, z.B. durch Stanzen, erzeugt wird. Anschliessend oder auch gleichzeitig wird der Träger 2 zur Erzeugung der Vertiefung 8 komprimiert , was z.B. mittels Rollen unter Verwendung entsprechend hoher Drücke geschehen kann. Nunmehr wird durch Abrollen die Abdeckfolie 5 auf die Oberfläche 6 des Trägers 2 aufgebracht. Die Festlegung der Abdeckfolie 5 auf dem Träger 2 kann entweder dadurch erfolgen, dass die Schutzlackschicht 23 oder die Haftvermittlerschicht 24 der Dekorschicht 16 der Abdeckfolie 5 entsprechende Klebereigenschaften aufweisen oder zusätzlich die Dekorschicht 16 der Abdeckfolie 5 mit einer aushärtenden, in der Zeichnung nicht dargestellten Kleberschicht versehen ist. Eine weitere Möglichkeit besteht darin, die Oberfläche 6 des Trägers 2 vor dem Aufbringen der Abdeckfolie 5 im Bereich der Vertiefung 8 mit einem Kleberauftrag zu versehen, mittels dessen dann die Abdeckfolie 5 an dem Träger 2 festgelegt wird. Welche der beiden Massnahmen ergriffen wird, hängt von der Art oder Zusammensetzung des Trägers 2, der Dekorschicht 16 der Abdeckfolie 5 sowie dem jeweiligen Verwendungszweck ab, wobei auch denkbar ist, Kleber sowohl auf der Abdeckfolie 5 als auch auf dem Träger 2 vorzusehen.The cover film is then preferably rolled onto the carrier 2 of the value document, e.g. Security 1 applied, the window-like opening 4, e.g. by punching. Subsequently or simultaneously, the carrier 2 is compressed to produce the depression 8, which e.g. can be done by means of rollers using correspondingly high pressures. The covering film 5 is now applied to the surface 6 of the carrier 2 by rolling it off. The covering film 5 can be fixed on the carrier 2 either by the protective lacquer layer 23 or the adhesion promoter layer 24 of the decorative layer 16 of the covering film 5 having corresponding adhesive properties or additionally providing the decorative layer 16 of the covering film 5 with a hardening adhesive layer, not shown in the drawing is. A further possibility is to provide the surface 6 of the carrier 2 with an adhesive application in the region of the depression 8 before the cover film 5 is applied, by means of which the cover film 5 is then fixed to the carrier 2. Which of the two measures is taken depends on the type or composition of the carrier 2, the decorative layer 16 of the cover film 5 and the respective intended use, although it is also conceivable to provide adhesive on both the cover film 5 and the carrier 2.

Nach der Anbringung der Abdeckfolie 5 kann die Oberfläche 6 und ggf. auch die Unterseite des Trägers 2 dann noch zur weiteren Verbesserung der Sicherheit mit dem zusammenhängenden Muster 14 in einem üblichen Druckverfahren überdruckt werden. Abschliessend werden bei Herstellung von Wertpapieren die einzelnen Wertpapiere 1 aus dem mehrere Träger 2 bildenden Papier-Verbund (Bahn, Bogen) ausgeschnitten.After the cover film 5 has been applied, the surface 6 and possibly also the underside of the carrier 2 can then be overprinted with the coherent pattern 14 in a conventional printing process in order to further improve security. Finally, the individual securities 1 cut out of the paper composite (web, sheet) forming several supports 2.

Bei dem beschriebenen Ausführungsbeispiel des Wertdokumentes handelt es sich um ein Wertpapier. Der Erfindungsgedanke kann jedoch in gleicher Weise auch bei aus anderen Materialien als Papier bestehenden Wertdokumenten, z.B. Kreditkarten, Ausweisen etc. Anwendung finden.The exemplary embodiment of the document of value described is a security. However, the inventive idea can also be used in the same way for documents of value made of materials other than paper, e.g. Credit cards, ID cards etc. are used.

Claims (18)

  1. Security document having at least one security element, the security document having at least one window-like aperture (4) closed by a translucent film, which aperture is subsequently produced in the finished substrate (2) which is used to manufacture the security document and is closed by means of a covering film (5) which projects beyond the aperture (4) on all sides, is fastened over its entire area on a surface (6) of the substrate (2) and is at least partly transparent, the said film being arranged in a depression (8) in the substrate surface (6) which encloses the window-like aperture (4).
  2. Security document according to Claim 1, characterized in that the substrate (2) of the security document (1) is compressed in order to form the depression (8).
  3. Security document according to one of the preceding claims, characterized in that the aperture (4) is produced by means of a stamping or cutting procedure.
  4. Security document according to one of Claims 2 and 3, characterized in that the aperture (4) is produced jointly with the depression (8) in one operation.
  5. Security document according to one of the preceding claims, characterized in that the covering film (5) extends transversely over the entire width or length of the substrate (2).
  6. Security document according to one of the preceding claims, characterized in that the covering film (5) is applied to the substrate (2) by means of pressure, the depression (8) being made at the same time.
  7. Security document according to Claim 5 and 6, characterized in that the covering film (5) is laminated onto the substrate (2) in an unwinding process.
  8. Security document according to one of the preceding claims, characterized in that, at least on one side (6) of the substrate (2), the covering film (5) and at least the adjacent surface area of the security document (1) are overprinted with a coherent pattern (14).
  9. Security document according to one of the preceding claims, characterized in that the covering film (5), at least on its free side which is not fastened to the substrate (2), bears an adhesion promoter (primer) layer (17).
  10. Security document according to one of the preceding claims, characterized in that the covering film (5) is a laminated film which comprises a transparent support film (15) and a decorative layer (16) which adheres firmly to the former, the decorative layer (16) being likewise transparent, at least in a part-area of the aperture (4).
  11. Security document according to Claim 10, characterized in that the decorative layer (16) comprises at least one lacquer layer (19, 23, 25).
  12. Security document according to one of the preceding claims, characterized in that the covering film (5) is provided with at least one security feature (12, 13), preferably based on optical effects, and at least a part of the area of the aperture (4) is left transparent.
  13. Security document according to Claim 12, characterized in that at least one security feature (12) is arranged in the area of the aperture (4).
  14. Security document according to Claim 12 or 13, characterized in that at least one security feature (12, 13) is formed by a diffraction structure and/or thin-layer arrangement which is optically active in refraction and/or diffraction.
  15. Security document according to Claim 10 to 14, characterized in that the decorative layer (16) - starting from the support film (15) - comprises a base lacquer layer (19) which is provided in at least some areas on its surface remote from the support film (15) with the diffraction structure (20, 21) serving as security feature (12, 13), a reflective layer (22), at least in the region of the diffraction structure (20, 21), and a transparent protective lacquer layer (23), at least in the region of the aperture (4).
  16. Security document according to one of Claims 8 to 13, characterized in that the covering film (5) is fastened to the substrate (2) in such a way that its decorative layer (16) points towards the surface (6) of the paper substrate (2).
  17. Security document according to one of Claims 8 to 14, characterized in that the decorative layer (16) bears, on the side opposite the support film (15), a layer of a curable adhesive.
  18. Security document according to one of the preceding claims, characterized in that the substrate (2) has, in the region serving for fastening the covering film (5), an application of adhesive.
EP94928296A 1993-10-13 1994-10-06 Security document with window Expired - Lifetime EP0723501B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4334847A DE4334847A1 (en) 1993-10-13 1993-10-13 Value document with window
DE4334847 1993-10-13
PCT/DE1994/001185 WO1995010420A1 (en) 1993-10-13 1994-10-06 Security document with window

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EP0723501A1 EP0723501A1 (en) 1996-07-31
EP0723501B1 true EP0723501B1 (en) 1997-07-23
EP0723501B2 EP0723501B2 (en) 2005-05-25

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EP (1) EP0723501B2 (en)
JP (1) JP4064449B2 (en)
CN (1) CN1040734C (en)
AT (1) ATE155742T1 (en)
AU (1) AU681909B2 (en)
BR (1) BR9407796A (en)
CA (1) CA2163528C (en)
DE (2) DE4334847A1 (en)
ES (1) ES2106562T5 (en)
HK (1) HK1001586A1 (en)
HU (1) HU219095B (en)
RU (1) RU2111864C1 (en)
TW (1) TW269731B (en)
WO (1) WO1995010420A1 (en)

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EP0723501B2 (en) 2005-05-25
JPH09503711A (en) 1997-04-15
AU7738994A (en) 1995-05-04
JP4064449B2 (en) 2008-03-19
ES2106562T3 (en) 1997-11-01
HU219095B (en) 2001-02-28
US20020030360A1 (en) 2002-03-14
CN1131930A (en) 1996-09-25
CN1040734C (en) 1998-11-18
BR9407796A (en) 1997-03-18
US6428051B1 (en) 2002-08-06
CA2163528C (en) 1998-12-08
AU681909B2 (en) 1997-09-11
CA2163528A1 (en) 1995-04-20
WO1995010420A1 (en) 1995-04-20
ES2106562T5 (en) 2005-12-01
ATE155742T1 (en) 1997-08-15
DE4334847A1 (en) 1995-04-20
EP0723501A1 (en) 1996-07-31
DE59403479D1 (en) 1997-08-28
HK1001586A1 (en) 1998-06-26
TW269731B (en) 1996-02-01
US6508489B2 (en) 2003-01-21
HUT75148A (en) 1997-04-28
RU2111864C1 (en) 1998-05-27

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