EP2252459B1 - Method for the individual application of hot embossing film and security documents produced therewith - Google Patents

Method for the individual application of hot embossing film and security documents produced therewith Download PDF

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Publication number
EP2252459B1
EP2252459B1 EP09712341.8A EP09712341A EP2252459B1 EP 2252459 B1 EP2252459 B1 EP 2252459B1 EP 09712341 A EP09712341 A EP 09712341A EP 2252459 B1 EP2252459 B1 EP 2252459B1
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EP
European Patent Office
Prior art keywords
film
adhesive
diffractive
hot embossing
document
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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EP09712341.8A
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German (de)
French (fr)
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EP2252459A1 (en
Inventor
Irina Menz
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Surys Research GmbH
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Surys Research GmbH
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/425—Marking by deformation, e.g. embossing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/16—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
    • B44C1/165—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
    • B44C1/17—Dry transfer
    • B44C1/1712—Decalcomanias applied under heat and pressure, e.g. provided with a heat activable adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/24—Passports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/328—Diffraction gratings; Holograms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/43—Marking by removal of material
    • B42D25/435—Marking by removal of material using electromagnetic radiation, e.g. laser
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/45—Associating two or more layers
    • B42D25/455—Associating two or more layers using heat
    • B42D2035/24—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/309—Photographs

Definitions

  • the invention relates to a method for individual hot stamping foil application according to the preamble of claim 1 and to security documents produced therewith according to claim 10.
  • EP0433575 and EP0341047 disclose a procedure and a safety document from this technical field.
  • hot stamping foils consist of a carrier film, a release layer, a thermoplastic layer in which relief structures are embossed, a reflection layer and a heat-activatable adhesive layer.
  • a carrier film By means of hot stamping dies, only the film parts corresponding to the outline of the hot stamping stamp are transferred to the substrate with heat-activated adhesive during the application process. The other film parts remain on the carrier film and are removed with this from the substrate.
  • the hot stamping foil can also be applied over the entire area to the credit card if the hot stamping stamp has the form of a credit card ( DE 100 13 410 A1 ).
  • the holographic structures of the hot stamping foil are produced by means of a holographic embossing die by replicative stamping into the thermoplastic layer.
  • a hot stamping foil is obtained with repeating holographic motifs, so-called standard motifs.
  • volume hologram film overlays with holographic passport photo are used for document protection.
  • the manufacturing and material costs for volume holograms are in comparison to Hot stamping foil with holographic relief structures, however, many times higher.
  • release film which deactivates the transferability of certain film areas of an adhesive-coated hot stamping foil.
  • This release film is laminated, for example, on the hot stamping foil, a heated stamp is pressed onto the film stack, only at this point the adhesive is activated, so that the decorative layer in the outline of the stamp is separated from the carrier film of the hot stamping film and the release film on the subsequent removal of the release film remains.
  • the hot lamination of the hot stamping foil changed in this way now takes place on the document. The removal of the release film can thus take place immediately before the application of the hot stamping foil on the document and thus damage to the film surface would be prevented during temporary storage.
  • filigree contours such as passport photos can not be applied to the document with this method, as formed as a result of the separation of these two films from one another known film dust that can settle on the thermally activated adhesive and thus affects the subsequent bonding with the document surface.
  • hot stamping film can be partially applied to substrates, if previously only certain substrate areas are coated with heat-activated adhesive.
  • the hot stamping foil itself has no adhesive coating and the application takes place only where the adhesive is on the substrate. If, for example, adhesive is applied as a strip to a security paper, a strip can be applied to the security from a hot stamping foil ( DE 102 22 433 A1 ).
  • As an adhesive it is also possible to use printing inks which become tacky at a higher temperature. This opens up possibilities for an individual film application, without the need for elaborate embossing stamp conversions.
  • logos with varying information content, numbering, etc. can be applied quickly and inexpensively from the hot stamping foil to substrate surfaces. So far, it has not been possible to apply highly complicated motifs, such as passport photos, directly from diffractive hot stamping foil directly to the document. In particular, for the film application of passport photos a very high application quality is required to ensure good recognition.
  • the object of the invention is therefore a method o. G. Specify genus, which in a simple, cost-effective and safe way higher quality of application of holographic hot stamping foils on personal data printed with personal documents and thus higher quality of the overall product, as well as to provide a high quality security document produced by this method.
  • a document 1 for example, a plastic card or paper page of a passport on which all printed personal data can be located, another passport photo 2 in addition to the existing information monochrome, with a resolution of at least 200 DPI, with the Thermal transfer printing process printed as inverse image.
  • the decorative layer 6 of Hot embossing film 3 remains as a coherent layer where the printed passport photo 2 is located.
  • the face can not be recognized because there are also film residues 7 between the printed pixels in the facial area.
  • Both the optimizations of the application temperature and the use of films with different detachment behavior did not lead to a sufficient improvement of the film-applied detail quality.
  • films with a lower Wax content in the release layer 5 between carrier film and embossing layer were tested, which require release forces of> 12 N for application, with the result that the printed ink does not sufficiently bind the decorative layer 6 and thus the film transfer to the printed surface areas could not take place.
  • the printing inks and toners used were varied. Suitable colors had to be found for printing on the document, which develop a sufficiently high bond strength during the hot stamping film application at temperatures between 110 ° and 150 ° C after the printing process, but still remain dimensionally stable on the document surface.
  • Toner 8 preferably those printed on the document by the laser printing or laser transfer printing process, showed the best hot foil application results. For example, fonts and numbers with font sizes> 2 mm could be applied well. But even with these it was not possible to get an acceptable slide application as a passport photo.
  • This application quality problem has been solved according to the invention in that after the heat lamination of the film 3 and the removal of the carrier layer 4, a further process step is introduced by applying an adhesive film 9 with adhesive forces ⁇ 10 N / cm, preferably ⁇ 5 N / cm, is rolled over the photo and thereby all those film residues 7 are removed from the document surface, under which there are no printed toner pixels ( Fig. 1 ). In this way you get an absolutely clean film application 3 ', which reproduces the passport photo in very good quality. When using adhesive films with greater adhesive force, however, the adhesive on the toner pixels film parts are carried away again.
  • the homogenous diffractive grating of the hot stamping foil may contain additional security features difficult to emulate, such as hidden laser-light-verifiable or lenticular information, blazed grids, and other machine-readable information.
  • the homogeneous diffractive grating of the hot stamping foil 3 can, as already mentioned, also be a diffractive "zero order" lattice which does not have the rainbow effect typical of surface hologram gratings but a defined color change when the viewing angle changes, similar to the optically variable inks (OVI) , Diffractive zero order gratings are much more difficult to readjust than conventional diffractive gratings with rainbow effect, and further increase anti-counterfeiting security when present in subregions of the diffractive passport photo.
  • OTI optically variable inks
  • the document surface is sealed with a scratch-resistant protective layer to increase durability.
  • the method according to the invention represents a cost-effective alternative that is equivalent in terms of its qualitative passport reproduction. Since the production of the individual diffractive data takes place directly on the document, a complex data comparison of the document and individualized hot stamping foil before application is not necessary.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Optics & Photonics (AREA)
  • Toxicology (AREA)
  • Credit Cards Or The Like (AREA)
  • Holo Graphy (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Description

Die Erfindung betrifft ein Verfahren zur individuellen Heißprägefolienapplikation gemäß dem Oberbegriff des Anspruchs 1 sowie damit hergestellte Sicherheitsdokumente gemäß Anspruch 10. EP0433575 und EP0341047 offenbaren ein Verfahren und ein Sichsheitsdokument aus diesem Technischen Gebiet.The invention relates to a method for individual hot stamping foil application according to the preamble of claim 1 and to security documents produced therewith according to claim 10. EP0433575 and EP0341047 disclose a procedure and a safety document from this technical field.

Holografische Heißprägefolienapplikationen auf Kreditkarten und Personaldokumenten haben sich zur Erhöhung des Fälschungs- und Kopierschutzes seit langem bewährt. In der Regel bestehen diese Heißprägefolien aus einer Trägerfolie, einer Ablöseschicht, einer Thermoplastschicht, in der Reliefstrukturen geprägt sind, einer Reflexionsschicht und einer hitzeaktivierbaren Klebstoffschicht. Mittels Heißprägestempel werden beim Applikationsprozess nur die, der Umrissform des Heißprägestempels entsprechenden Folienteile mit hitzeaktiviertem Klebstoff auf das Substrat übertragen. Die anderen Folienteile verbleiben an der Trägerfolie und werden mit dieser vom Substrat abgezogen. Die Heißprägefolie kann beispielsweise auch vollflächig auf die Kreditkarte appliziert werden, wenn der Heißprägestempel die Form einer Kreditkarte hat ( DE 100 13 410 A1 ).Holographic hot stamping foil applications on credit cards and personal documents have long been proven to increase counterfeiting and copy protection. As a rule, these hot stamping foils consist of a carrier film, a release layer, a thermoplastic layer in which relief structures are embossed, a reflection layer and a heat-activatable adhesive layer. By means of hot stamping dies, only the film parts corresponding to the outline of the hot stamping stamp are transferred to the substrate with heat-activated adhesive during the application process. The other film parts remain on the carrier film and are removed with this from the substrate. For example, the hot stamping foil can also be applied over the entire area to the credit card if the hot stamping stamp has the form of a credit card ( DE 100 13 410 A1 ).

Die Herstellung der holografischen Strukturen der Heißprägefolie erfolgt mittels einer holografischen Prägematritze durch replikatives Einprägen in die Thermoplastschicht. Auf diese Weise wird eine Heißprägefolie mit sich wiederholenden holografischen Motiven, sogenannten Standardmotiven, erhalten.The holographic structures of the hot stamping foil are produced by means of a holographic embossing die by replicative stamping into the thermoplastic layer. In this way, a hot stamping foil is obtained with repeating holographic motifs, so-called standard motifs.

Zur Erhöhung des Fälschungsschutzes von Personaldokumenten wird in zunehmendem Maße gefordert, individuelle Personaldaten auch in den applizierten holografischen optischen Elementen zu haben, die visuell mit den gedruckten Personaldaten bei der Echtheitsprüfung des Dokumentes verglichen werden können. Es ist bekannt ( EP 0 896 260 A2 ), dass Volumenhologrammfilmoverlays mit holographischen Passfoto für den Dokumentenschutz eingesetzt werden. Die Herstellungs- und Materialkosten für Volumenhologramme sind im Vergleich zur Heißprägefolie mit holografischen Reliefstrukturen jedoch um ein Vielfaches höher.To increase the protection against counterfeiting of personal documents, it is increasingly required to have individual personal data also in the applied holographic optical elements, which can be compared visually with the printed personal data in the authenticity check of the document. It is known ( EP 0 896 260 A2 ) that volume hologram film overlays with holographic passport photo are used for document protection. The manufacturing and material costs for volume holograms are in comparison to Hot stamping foil with holographic relief structures, however, many times higher.

Die Herstellung individueller Informationen von in Folie geprägten holografischen Reliefstrukturen verlangt zusätzliche Schritte. In der EP 0420261 B1 werden verschiedene Verfahren dazu aufgezeigt. So können individuelle Veränderungen des Heißprägefolienaufbaus durchgeführt werden, beispielsweise Bedruckung der Reflexionsschicht mit individuellen Daten mit nachfolgender Klebstoffbeschichtung, Demetallisierung oder Veränderung der Reflexionseigenschaften von Teilbereichen der Reflexionsschicht, individuelle Lasergravur der geprägten Thermolackschicht oder partielle Klebstoffbeschichtung in Form individueller Daten. Diese Zusatzschritte erhöhen den Produktionsaufwand erheblich und die auf diese Weise personaldatentragende Hologrammfolie benötigt zusätzlichen Sicherheitsaufwand bei der Zwischenlagerung bis zur Applikation auf das Dokument. Darüber hinaus können sich Materialalterungen und mechanische Beschädigungen insbesondere im Bereich der in Form individueller Personaldaten aufgebrachten Klebstoffschicht gravierend auf die spätere Applikationsqualität auswirken.The production of individual information from foil-embossed holographic relief structures requires additional steps. In the EP 0420261 B1 different methods are shown. Thus, individual changes of the hot embossing foil structure can be carried out, for example printing of the reflection layer with individual data with subsequent adhesive coating, demetalization or change of the reflection properties of partial regions of the reflection layer, individual laser engraving of the embossed thermal lacquer layer or partial adhesive coating in the form of individual data. These additional steps significantly increase the production effort and the hologram foil carrying personal data in this way requires additional security during intermediate storage until it is applied to the document. In addition, material aging and mechanical damage, especially in the area of the adhesive layer applied in the form of individual personal data, can have a serious effect on the subsequent application quality.

In der WO 2006-048563 wird die Verwendung einer sogenannten Ablösefolie vorgeschlagen, die die Transferierbarkeit bestimmter Folienbereiche einer klebstoffbeschichteten Heißprägefolie deaktiviert. Diese Ablösefolie wird beispielsweise auf die Heißprägefolie laminiert, ein geheizter Stempel wird auf den Folienstapel gepresst, nur an dieser Stelle der Klebstoff aktiviert, sodass beim nachfolgenden Abziehen der Ablösefolie die Dekorschicht in der Umrissform des Stempels von der Trägerfolie der Heißprägefolie getrennt wird und auf der Ablösefolie verbleibt. Nun erfolgt die Heißlamination der auf diese Weise veränderten Heißprägefolie auf das Dokument. Das Abziehen der Ablösefolie kann also unmittelbar vor der Applikation der Heißprägefolie auf das Dokument stattfinden und somit wäre einer Beschädigung der Folienoberfläche bei Zwischenlagerung vorgebeugt. Allerdings können mit diesem Verfahren filigrane Konturen wie beispielsweise Passfotos nicht auf das Dokument appliziert werden, da sich infolge der Trennung dieser beiden Folien voneinander bekannter weise Folienstaub bildet, der sich auf den thermisch aktivierbaren Klebstoff absetzen kann und somit die nachfolgende Verklebung mit der Dokumentenoberfläche beeinträchtigt.In the WO 2006-048563 the use of a so-called release film is proposed, which deactivates the transferability of certain film areas of an adhesive-coated hot stamping foil. This release film is laminated, for example, on the hot stamping foil, a heated stamp is pressed onto the film stack, only at this point the adhesive is activated, so that the decorative layer in the outline of the stamp is separated from the carrier film of the hot stamping film and the release film on the subsequent removal of the release film remains. The hot lamination of the hot stamping foil changed in this way now takes place on the document. The removal of the release film can thus take place immediately before the application of the hot stamping foil on the document and thus damage to the film surface would be prevented during temporary storage. However, filigree contours such as passport photos can not be applied to the document with this method, as formed as a result of the separation of these two films from one another known film dust that can settle on the thermally activated adhesive and thus affects the subsequent bonding with the document surface.

Es ist bekannt ( DE 35 11 146 A1 ), dass Heißprägefolie auf Substrate partiell appliziert werden kann, wenn vorher nur bestimmte Substratbereiche mit hitzeaktivierbaren Klebstoff beschichtet werden. Die Heißprägefolie selbst hat keine Klebstoffbeschichtung und die Applikation findet nur dort statt, wo sich der Klebstoff auf dem Substrat befindet. Wird beispielsweise Klebstoff als ein Streifen auf ein Wertpapier aufgebracht, kann aus einer Heißprägefolie ein Streifen auf das Wertpapier appliziert werden ( DE 102 22 433 A1 ). Als Klebstoff können auch Druckfarben verwendet werden, die bei höherer Temperatur klebrig werden. Damit erschließen sich Möglichkeiten für eine individuelle Folienapplikation, ohne dass aufwendige Prägestempelumrüstungen notwendig sind. So können Schriftzüge mit wechselndem Informationsgehalt, Nummerierungen etc., schnell und kostengünstig aus der Heißprägefolie auf Substratoberflächen appliziert werden. Es ist bisher nicht gelungen, hochkomplizierte Motive, wie beispielsweise Passfotos, individuell aus diffraktiver Heißprägefolie direkt auf das Dokument zu applizieren. Insbesondere für die Folienapplikation von Passfotos wird eine sehr hohe Applikationsqualität verlangt, um eine gute Wiedererkennbarkeit zu gewährleisten.It is known ( DE 35 11 146 A1 ) that hot stamping film can be partially applied to substrates, if previously only certain substrate areas are coated with heat-activated adhesive. The hot stamping foil itself has no adhesive coating and the application takes place only where the adhesive is on the substrate. If, for example, adhesive is applied as a strip to a security paper, a strip can be applied to the security from a hot stamping foil ( DE 102 22 433 A1 ). As an adhesive, it is also possible to use printing inks which become tacky at a higher temperature. This opens up possibilities for an individual film application, without the need for elaborate embossing stamp conversions. Thus, logos with varying information content, numbering, etc., can be applied quickly and inexpensively from the hot stamping foil to substrate surfaces. So far, it has not been possible to apply highly complicated motifs, such as passport photos, directly from diffractive hot stamping foil directly to the document. In particular, for the film application of passport photos a very high application quality is required to ensure good recognition.

Zwar wird in der EP 0 420 261 B1 beschrieben, dass individuell auch Passfotos durch Teildemetallisierung der metallisierten Prägeschicht in Form der Personaldaten nachträglich in die diffraktive Heißprägefolie eingebracht werden können, bevor sie auf die dazugehörigen Dokumente appliziert wird. Neben der kostenaufwendigen Demetallisierung ist nachteilig, dass eine aufwendige Datenlogistik notwendig ist, um eine richtige Zuordnung von Dokument und individueller Heißprägefolie zu erhalten.True, in the EP 0 420 261 B1 described that individually passport photos can be introduced by partial demetalization of the metallized embossed layer in the form of personal data subsequently in the diffractive hot stamping foil before it is applied to the associated documents. In addition to the costly demetallization is disadvantageous that a complex data logistics is necessary to obtain a correct assignment of document and individual hot stamping foil.

In der DE 19927175 A1 wird beschrieben, dass die Applikationsqualität einer mittels eines Heißprägestempels unter hohem Druck applizierten Heißprägefolie verbessert werden kann, wenn nachträglich ein Klebeband über die Substratoberfläche gerollt wird, welches nicht verklebte Folienreste von der Substratoberfläche, hier Holz oder Leder, beseitigt. Allerdings wird bei diesem Verfahren die Heißprägefolie tief in das Substrat geprägt und befindet sich somit nicht mehr auf der Oberfläche des Substrates, sodass das Klebeband nicht die applizierte Folie berührt und nicht die Gefahr besteht, das diese wieder vom Substrat abgerissen wird.In the DE 19927175 A1 It is described that the application quality of a hot embossing foil applied by means of a hot stamping die under high pressure can be improved if subsequently an adhesive tape is rolled over the substrate surface which removes non-glued foil remnants from the substrate surface, in this case wood or leather. However, in this method, the hot stamping foil is deeply embossed in the substrate and thus is no longer on the surface of the substrate so that the tape does not touch the applied film and there is no risk that it will be torn off the substrate again.

Aufgabe der Erfindung ist es somit, ein Verfahren o. g. Gattung anzugeben, welches in einfacher, kostengünstiger und sicherer Weise eine höhere Applikationsqualität der holographischen Heißprägefolien auf mit Personaldaten bedruckte Personaldokumente und somit eine höhere Qualität des Gesamtprodukts erlaubt, sowie ein Sicherheitsdokument hoher Qualität anzugeben, hergestellt durch dieses Verfahren.The object of the invention is therefore a method o. G. Specify genus, which in a simple, cost-effective and safe way higher quality of application of holographic hot stamping foils on personal data printed with personal documents and thus higher quality of the overall product, as well as to provide a high quality security document produced by this method.

Diese Aufgabe wird durch ein Verfahren mit den Merkmalen des Anspruchs 1 sowie durch ein Sicherheitsdokument gemäß Anspruch 10 gelöst. Vorteilhafte Ausgestaltungen sind in den entsprechend rückbezogenen Unteransprüchen gekennzeichnet.This object is achieved by a method having the features of claim 1 and by a security document according to claim 10. Advantageous embodiments are characterized in the correspondingly dependent subclaims.

Nachfolgend wird die Erfindung anhand von Ausführungsbeispielen unter Bezug auf die Zeichnung näher beschrieben. Es zeigen:

Fig. 1:
den schematischen Aufbau einer Einrichtung zum Durchführen des Verfahrens in erster Ausführung mit Schwarz-Weiß-Druck, und
Fig. 2:
den schematischen Aufbau einer Einrichtung zum Durchführen des Verfahrens in zweiter Ausführung mit Farbdruck.
The invention will be described in more detail by means of exemplary embodiments with reference to the drawing. Show it:
Fig. 1:
the schematic structure of a device for performing the method in the first embodiment with black and white printing, and
Fig. 2:
the schematic structure of a device for carrying out the method in the second embodiment with color printing.

Wie aus der Fig. 1 zu entnehmen ist, wird zunächst auf ein Dokument 1, beispielsweise eine Plastikkarte oder Papierseite eines Reisepasses, auf dem sich bereits alle gedruckten Personaldaten befinden können, ein weiteres Passfoto 2 neben den bereits vorhandenen Informationen einfarbig, mit einer Auflösung von mindestens 200 DPI, mit dem Thermotransferdruckverfahren als Inversbild gedruckt. Dann wird eine holografische nichtklebende Heißprägefolie 3 ohne Klebstoffbeschichtung, bestehend aus einer Trägerfolie 4, einer Ablöseschicht 5, der holografisch geprägten Thermoschicht mit aufgedampfter Reflexionsschicht, hier genannt Dekorschicht 6, mit einem Rollenheißlaminationsgerät bei einer Temperatur von 110 - 150°C mit der Reflexionsschichtseite auf das bedruckte Dokument 1 laminiert und der Träger 4 der Heißprägefolie abgezogen. Die Dekorschicht 6 der Heißprägefolie 3 verbleibt als zusammenhängende Schicht dort, wo sich das gedruckte Passfoto 2 befindet. Das Gesicht kann nicht erkannt werden, da sich auch zwischen den gedruckten Pixeln im Gesichtsbereich Folienreste 7 befinden. Sowohl die Optimierungen der Applikationstemperatur als auch die Verwendung von Folien mit unterschiedlichem Ablöseverhalten führten zu keiner ausreichenden Verbesserung der folienapplizierten Detailqualität. So wurden Folien mit niedrigerem Wax-Anteil in der Ablöseschicht 5 zwischen Trägerfolie und Prägeschicht getestet, die Trennkräfte von >12 N zur Applikation benötigen, mit dem Ergebnis, dass die gedruckte Farbe die Dekorschicht 6 nicht ausreichend bindet und somit der Folientransfer auf die bedruckten Oberflächenbereiche nicht stattfinden konnte.Like from the Fig. 1 can be seen, is first on a document 1, for example, a plastic card or paper page of a passport on which all printed personal data can be located, another passport photo 2 in addition to the existing information monochrome, with a resolution of at least 200 DPI, with the Thermal transfer printing process printed as inverse image. Then, a holographic non-adhesive hot stamping film 3 without adhesive coating consisting of a carrier film 4, a release layer 5, the holographic embossed thermal layer with a deposited reflection layer, here called decorative layer 6, with a Rollenheißlaminationsgerät at a temperature of 110 - 150 ° C with the reflection layer side on the printed document 1 laminated and the carrier 4 withdrawn from the hot stamping foil. The decorative layer 6 of Hot embossing film 3 remains as a coherent layer where the printed passport photo 2 is located. The face can not be recognized because there are also film residues 7 between the printed pixels in the facial area. Both the optimizations of the application temperature and the use of films with different detachment behavior did not lead to a sufficient improvement of the film-applied detail quality. Thus, films with a lower Wax content in the release layer 5 between carrier film and embossing layer were tested, which require release forces of> 12 N for application, with the result that the printed ink does not sufficiently bind the decorative layer 6 and thus the film transfer to the printed surface areas could not take place.

Folien mit hohem Anteil an Wax-Release in der Ablöseschicht können bereits bei niedrigeren Temperaturen und mit geringerer Abzugskraft < 10 N/cm, appliziert werden. Es wird aber auch mit diesem Folientyp keine detailgetreue Applikation innerhalb des Passbildes erreicht. Bei diesem Folientyp verbleibt die metallische Dekorschicht 6 innerhalb des Passbildbereiches als eine zusammenhängende unstrukturierte Fläche.Films with a high proportion of wax release in the release layer can already be applied at lower temperatures and with a lower peel force <10 N / cm. But it is also achieved with this type of film no detailed application within the passport picture. In this type of film, the metallic decorative layer 6 remains within the passport area as a coherent unstructured surface.

Da auch die Klebeeigenschaft der Druckfarben einen großen Einfluss auf die Applikationsqualität der Heißprägefolien hat, wurden die verwendeten Druckfarben und Toner variiert. Geeignete Farben mussten zum Druck auf das Dokument gefunden werden, die während der Heißprägefolienapplikation bei Temperaturen zwischen 110° und 150°C nach erfolgtem Druckvorgang eine genügend hohe Klebkraft entwickeln, aber trotzdem formstabil auf der Dokumentenoberfläche bleiben. Toner 8, bevorzugterweise solche, die mit dem Laserdruck- oder Lasertransferdruckverfahren auf das Dokument gedruckt wurden, zeigten die besten Heißfolienapplikationsergebnisse. Beispielsweise konnten Schriften und Nummern mit Schriftgrößen > 2 mm gut appliziert werden. Aber auch mit diesen war es nicht möglich, eine akzeptable Folienapplikation als Passbild zu erhalten.Since the adhesive properties of the printing inks also have a great influence on the application quality of the hot stamping foils, the printing inks and toners used were varied. Suitable colors had to be found for printing on the document, which develop a sufficiently high bond strength during the hot stamping film application at temperatures between 110 ° and 150 ° C after the printing process, but still remain dimensionally stable on the document surface. Toner 8, preferably those printed on the document by the laser printing or laser transfer printing process, showed the best hot foil application results. For example, fonts and numbers with font sizes> 2 mm could be applied well. But even with these it was not possible to get an acceptable slide application as a passport photo.

Dieses Applikationsqualitätsproblem ist erfindungsgemäß dadurch gelöst worden, dass nach der Heißlamination der Folie 3 und dem Abziehen der Trägerschicht 4 ein weiterer Verfahrensschritt eingeführt wird, indem eine Haftfolie 9 mit Klebekräften < 10 N/cm, bevorzugterweise < 5 N/cm, über das Photo gewalzt wird und dabei all jene Folienreste 7 von der Dokumentenoberfläche entfernt werden, unter denen sich keine gedruckten Tonerpixel befinden (Fig. 1). Auf diese Weise erhält man eine absolut saubere Folienapplikation 3', die das Passbild in sehr guter Qualität wiedergibt. Bei Verwendung von Haftfolien mit größerer Klebekraft hingegen werden die auf den Tonerpixeln haftenden Folienteile wieder fortgerissen. Insbesondere vorteilhaft ist es, das inverse Passbild mit transparenten Tonern zu drucken sowie transparente diffraktive Heißprägefolie mit einer hochbrechenden transparenten Beschichtung, z. B. Titanoxid, anstelle der üblichen metallischen Beschichtung zu verwenden. Auf diese Weise werden keine anderen Dokumentendaten verdeckt.This application quality problem has been solved according to the invention in that after the heat lamination of the film 3 and the removal of the carrier layer 4, a further process step is introduced by applying an adhesive film 9 with adhesive forces <10 N / cm, preferably <5 N / cm, is rolled over the photo and thereby all those film residues 7 are removed from the document surface, under which there are no printed toner pixels ( Fig. 1 ). In this way you get an absolutely clean film application 3 ', which reproduces the passport photo in very good quality. When using adhesive films with greater adhesive force, however, the adhesive on the toner pixels film parts are carried away again. It is particularly advantageous to print the inverse passport photograph with transparent toners, as well as transparent diffractive hot stamping foil with a high refractive transparent coating, e.g. As titanium oxide, instead of the usual metallic coating to use. In this way, no other document data is obscured.

Zur Erhöhung der Nachstellbarkeit wird vorgeschlagen, zunächst eine rechteckige Fläche in der Größe des Passbildes zu drucken, auf die eine Heißprägefolie mit einem diffraktiven, bevorzugterweise ein "zero order" Gitter appliziert wird, dann das Photo zu drucken und eine weitere diffraktive Folie mit anderer Gitterfrequenz oder anderem Rekonstruktionswinkel zu applizieren. Als Resultat erhält man ein appliziertes diffraktives Passfoto, bei dem alle Bereiche diffraktiv sind, was eine unerlaubte Nachstellung, beispielsweise durch Drucken eines Photos auf eine applizierte diffraktive Fläche, unmöglich macht.To increase the adjustability is proposed to first print a rectangular area in the size of the passport photo, to which a hot stamping foil with a diffractive, preferably a "zero order" grid is applied, then to print the photo and another diffractive film with a different grid frequency or other reconstruction angle. The result is an applied diffractive passport photo in which all areas are diffractive, which makes an unauthorized adjustment, for example by printing a photo on an applied diffractive surface impossible.

Zur weiteren Erhöhung der Fälschungssicherheit kann das homogene diffraktive Gitter der Heißprägefolie zusätzliche schwer nachzumachende Sicherheitsmerkmale enthalten, wie versteckte laserlichtverifizierbare oder lentikulare Informationen, geblazte Gitter und andere maschinenlesbare Informationen.To further enhance anti-counterfeiting security, the homogenous diffractive grating of the hot stamping foil may contain additional security features difficult to emulate, such as hidden laser-light-verifiable or lenticular information, blazed grids, and other machine-readable information.

Das homogene diffraktive Gitter der Heißprägefolie 3 kann, wie bereits erwähnt, auch ein diffraktives "Zero Order"-Gitter sein, welches nicht den für Oberflächenhologrammgitter typischen Regenbogeneffekt sondern einen definierten Farbwechsel bei Änderung des Betrachtungswinkels, ähnlich der optisch variablen Tinten (OVI), aufweist. Diffraktive "Zero Order" Gitter sind erheblich schwieriger nachzustellen als übliche diffraktive Gitter mit Regenbogeneffekt und erhöhen weiter die Fälschungssicherheit, wenn sie in Teilbereichen des diffraktiven Passfoto vorhanden sind.The homogeneous diffractive grating of the hot stamping foil 3 can, as already mentioned, also be a diffractive "zero order" lattice which does not have the rainbow effect typical of surface hologram gratings but a defined color change when the viewing angle changes, similar to the optically variable inks (OVI) , Diffractive zero order gratings are much more difficult to readjust than conventional diffractive gratings with rainbow effect, and further increase anti-counterfeiting security when present in subregions of the diffractive passport photo.

Nach erfolgter Dokumentenapplikation wird die Dokumentenoberfläche mit einer kratzfesten Schutzschicht zur Erhöhung der Haltbarkeit versiegelt.After document application, the document surface is sealed with a scratch-resistant protective layer to increase durability.

Verglichen mit dem individualisierten Volumenhologrammfilmoverlay-Verfahren stellt das erfindungsgemäße Verfahren eine kostengünstige und in seiner qualitativen Passbildwiedergabe ebenbürtige Alternative dar. Da die Herstellung der individuellen diffraktiven Daten direkt auf dem Dokument stattfindet, ist ein aufwendiger Datenabgleich von Dokument und vor Applikation individualisierter Heißprägefolie nicht notwendig.Compared with the individualized volume hologram film overlay method, the method according to the invention represents a cost-effective alternative that is equivalent in terms of its qualitative passport reproduction. Since the production of the individual diffractive data takes place directly on the document, a complex data comparison of the document and individualized hot stamping foil before application is not necessary.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1.1.
(Personal-) Dokument (Substrat)(Personnel) Document (Substrate)
2. 2, 2a, 2b, 2c 2. 2, 2a, 2b, 2c
Passfotopassport photo
3. 3, 3b, 3c 3. 3, 3b, 3c
Heißprägefolie ohne KlebstoffbeschichtungHot stamping foil without adhesive coating
4.4th
Trägerfoliesupport film
5.5th
Ablöseschichtrelease layer
6. 6, 6a, 6b, 6c 6. 6, 6a, 6b, 6c
Dekorschichtdecorative layer
7.7th
Folienrestefilm residues
8.8th.
Tonertoner
9.9th
Haftfoliecling film

Claims (11)

  1. Method for the individual application of hot embossing film, wherein
    - an adhesive is printed on a substrate (1) in the form of symbols, patterns, numbers etc.,
    - then a hot embossing film (3), consisting of a backing film (4), peel-off layer (5) and decorative layer (6), is hot-laminated on the printed substrate and then the backing film is removed,
    characterized in that
    - the substrate is a personal document (1), on which personal data, in particular a passport photograph (2), are printed in inverted form using digital printing methods, the printing medium being a toner (8) or a dye that develops adhesive characteristics at laminating temperatures,
    - subsequently, a diffractive hot embossing film (3) without adhesive coating is hot-laminated on the printed personal document (1) and the backing film (4) is removed,
    - and finally, an adhesive film (9) with an adhesive power <10 N/cm is rolled over the substrate surface to remove any residues (7) of non-bonded film.
  2. Method according to Claim 1, characterized in that the toner (8) or dye develops adhesive characteristics in the temperature range from 110-150°C.
  3. Method according to Claim 1, characterized in that the personal data and the passport photograph (2) are printed on the document (1) with the thermal transfer or laser printing method with monochrome or transparent toner (8) with a resolution of ≥ 2200 dpi.
  4. Method according to Claim 1, characterized in that the decorative layer (6) of the diffractive hot embossing film is metallized or coated with a highly refractive transparent
    dielectric.
  5. Method according to Claim 1, characterized in that the peel-off layer (5) of the hot embossing film (3) has a separation power of <12 N.
  6. Method according to Claim 1, characterized in that a diffractive hot embossing film (3) is used which, in its decorative layer (6), has a homogeneous grid at least in a partial area.
  7. Method according to Claim 6, characterized in that there is additional holographic, concealed machine-readable information within the homogeneous diffractive grid.
  8. Method according to Claim 1, characterized in that the first printing/application and adhesive film rolling process may be followed by other printing and application and adhesive film rolling processes which use additional printing data sets and additional hot embossing films with differentiated holographic grids.
  9. Method according to Claim 10, characterized in that at least one partial area of the employed diffractive hot embossing films (3) has a "zero oder" grid.
  10. Personal document with diffractive passport photograph (2) applied digitally in inverted form, with the printing medium applied directly on the document (3) developing adhesive characteristics at laminating temperature, which has a rainbow color effect in a partial area and a defined color-change effect in a second partial area, produced according to Claims 1-9.
  11. Security document according to Claim 10, characterized in that the passport photograph (2) is a diffractive passport photograph in true color at a specific viewing angle.
EP09712341.8A 2008-02-18 2009-02-18 Method for the individual application of hot embossing film and security documents produced therewith Active EP2252459B1 (en)

Applications Claiming Priority (2)

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DE102008009699 2008-02-18
PCT/DE2009/000219 WO2009103274A1 (en) 2008-02-18 2009-02-18 Method for the individual application of hot embossing film and security documents produced therewith

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WO2009103274A8 (en) 2009-10-29
US20100323131A1 (en) 2010-12-23
EP2252459A1 (en) 2010-11-24
WO2009103274A1 (en) 2009-08-27

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