EP3279005A1 - Procédé et feuille de transfert permettant le transfert d'éléments de sécurité en forme de motif à un substrat cible - Google Patents

Procédé et feuille de transfert permettant le transfert d'éléments de sécurité en forme de motif à un substrat cible Download PDF

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Publication number
EP3279005A1
EP3279005A1 EP17001297.5A EP17001297A EP3279005A1 EP 3279005 A1 EP3279005 A1 EP 3279005A1 EP 17001297 A EP17001297 A EP 17001297A EP 3279005 A1 EP3279005 A1 EP 3279005A1
Authority
EP
European Patent Office
Prior art keywords
transfer
layer
security element
layer structure
film
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17001297.5A
Other languages
German (de)
English (en)
Other versions
EP3279005B1 (fr
Inventor
Josef Schinabeck
André Gregarek
Winfried HOFFMÜLLER
Christoph Gebauer
Christoph Mengel
Mario Keller
Matthias Pfeiffer
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.)
Giesecke and Devrient Currency Technology GmbH
Original Assignee
Giesecke and Devrient Currency Technology GmbH
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
Application filed by Giesecke and Devrient Currency Technology GmbH filed Critical Giesecke and Devrient Currency Technology GmbH
Publication of EP3279005A1 publication Critical patent/EP3279005A1/fr
Application granted granted Critical
Publication of EP3279005B1 publication Critical patent/EP3279005B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29—Securities; Bank notes
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/45—Associating two or more layers
    • B42D25/465—Associating two or more layers using chemicals or adhesives
    • B42D25/47—Associating two or more layers using chemicals or adhesives using adhesives

Definitions

  • the invention relates to a method and a transfer film for transferring motif-shaped security elements onto a target substrate.
  • Data carriers such as valuables or identity documents, or other valuables, such as branded articles, are often provided with security elements for the purpose of security, which permit verification of the authenticity of the data carriers and at the same time serve as protection against unauthorized reproduction.
  • the security elements typically have multiple layers including at least one functional layer, for example in the form of a hologram, an optically variable coating or a metallized embossed structure. Often the security elements are glued after their preparation by means of an adhesive layer, in particular a heat seal lacquer, on the desired data carrier as a target substrate.
  • an adhesive layer in particular a heat seal lacquer
  • the layers forming the layer structure of the security elements are usually first applied to an endless film serving as a carrier and transferred from there to the target substrate.
  • the layer structure of the security elements contains a carrier film which forms an integral part of the security elements even after the transfer. If a security element is used, for example, for closing a through opening of a data carrier, it must be self-supporting and particularly stable.
  • such an integral carrier film already allows the individual transfer elements on the transfer film in the desired outline shape to provide, since after a full-scale production of the layer structure and appropriate punching the intermediate areas (often referred to as a grid) between the transfer elements to be transferred by means of the carrier film from the transfer film can be removed (so-called Ausmittern). In this way it can be avoided, in particular, that fragments of the security element layer structure contaminate the target substrate.
  • the thinnest possible security elements that is to say in particular the security element without integrated carrier foil, on a data carrier.
  • such thin security elements can not be prepared in a simple manner in motif form on a transfer film and transferred from this to a target substrate.
  • a strip-shaped endless film and its use are for example from the printing layer EP 2 848 425 A2 known.
  • the object of the invention is to specify a method with which motif-type security elements can be easily transferred to a target substrate even without integrated carrier foil.
  • the invention is also intended to provide an associated transfer foil for transferring motivic security elements.
  • a stabilizing layer in the form of a viscous lacquer layer is firmly connected to the security element layer structure and forms with it a stable lacquer lattice which, after a separating step, forms transmission areas and non-transmission areas in the non-transfer area. Transfer areas of the temporary carrier film is removable.
  • the tough lacquer layer provides the necessary stability in order to be able to detach the stable lacquer mesh in the non-transfer regions from the temporary carrier foil.
  • the security element layer structure thus does not have to have a carrier foil and can be made particularly thin. Accordingly, the security element layer structure particularly advantageously contains no film layer, in particular no carrier film.
  • the layers of the security element layer structure are in particular formed over the entire surface.
  • the stable paint grid is in separate, in particular punched, form and forms separate motive transfer areas and non-transfer areas from each other.
  • the non-transfer areas are preferably formed contiguous and can therefore be largely detached from the temporary carrier film over a large area.
  • the separation preferably takes place by means of a punch, for example a mechanical punch or a laser punch.
  • A, in particular punched, parting line extending through the security element layer structure can extend into the temporary carrier film.
  • the security element layer structure is thus completely reliably separated completely from the paint grid.
  • the temporary carrier foil has a first foil layer and a second foil layer.
  • the first film layer serves in particular as a die-coatable film layer and the second film layer as an un-punched film layer.
  • the dividing line between the transfer areas and the non-transfer areas created during the separation extends (only) into the first film layer.
  • the second layer of film prevents a tearing-in of the first layer of film-a temporary carrier film tearing.
  • the stabilization layer may be present over the whole area, but at present configurations are preferred in which the stabilization layer is present only in regions and preferably substantially only in the non-transmission regions.
  • the stabilization layer can also be structured in terms of height and, in the case that it is present only in regions, be formed in particular with a layer thickness decreasing in the edge regions.
  • the extensions of the stabilization layer can also extend into the transmission areas and after removal form the paint grid side anchoring elements in the stand-left security element areas that can serve to anchor the transmitted security elements on the target substrate.
  • the dividing lines produced in particular by punching can also be located in the case of a height-structured formation of a stabilizing layer which is present only in regions such that the stabilizing layer is present only in the non-transfer regions and does not protrude into the transfer regions.
  • a height-structured stabilization layer may have generally linearly rising and falling partial areas, step-like rising and falling partial areas, and / or curved rising and falling partial areas.
  • the stabilization layer has a minimum distance from the transmission regions, which can also be of different sizes in different spatial directions and at corners of the transmission regions.
  • a maximum extent of the regions projecting into the transfer regions can be provided. This maximum extent can be defined absolutely or also relative to the size of the transmission areas.
  • Next adjacent transmission areas may advantageously have a minimum distance.
  • the shape of the stabilization layer regions may follow or may be independent of the shape of the transfer regions. For example, the edge of the transmission regions may have a curved curve, but the stabilization layer may be provided with rectilinearly delimited edges. In such a case, it can be ensured by a minimum distance from stabilizing layer and transmission range that sufficient space is available for cutting or separating line formation by mechanical punching or lasing.
  • the stabilization layer may be disposed below or above the security element layer structure as seen from the temporary carrier film, the latter option currently being preferred.
  • the stabilization layer and the security element layer structure can be arranged directly above one another, but it is also possible to provide intermediate layers, in particular a primer layer, between the stabilization layer and the security element layer structure.
  • the stabilization layer preferably has a layer thickness between 4 ⁇ m and 10 ⁇ m, preferably between 4 ⁇ m and 8 ⁇ m. Due to the required high layer thickness, the stabilizing layer also advantageously has a high solids content, in particular of 90% or more. The stabilizing layer may even be a 100% system.
  • the stabilizing layer is in the form of a tough UV-curing or electron beam-curing lacquer layer.
  • a UV-curing lacquer can be homogeneously cured over the entire surface, but can also be cured differently in different areas by different exposure, for example over part of the surface or also stepped with different UV light intensity, for example through an exposure mask.
  • the degree of cure can be 100% or even only 75-95%.
  • a regionally present stabilizing layer may have lower curing in each of its central regions than in the peripheral regions. For example, the degree of cure can increase continuously from 75% in the center region to 100% in the edge regions. Area wise different Curing can be achieved in particular by a semi-transparent UV mask with regions of different UV transmission.
  • the stabilizing layer advantageously has an elongation at break of more than 2.5%, preferably more than 3%, particularly preferably more than 4% or even more than 5%.
  • the breaking load of the stabilizing layer is suitably above 15 N / mm 2 .
  • the security element layer structure can be present over the entire area of the transfer film or even applied or patterned in a motif-like manner.
  • the entire layer structure on the transfer film is advantageously heat-sealable.
  • the security element layer structure may comprise an (embossing lacquer) layer, in particular an embossed and / or metallized layer, which lies on the temporary carrier foil and which already has a sufficiently low adhesion to the temporary carrier foil for transfer and / or detachment.
  • an (embossing lacquer) layer in particular an embossed and / or metallized layer, which lies on the temporary carrier foil and which already has a sufficiently low adhesion to the temporary carrier foil for transfer and / or detachment.
  • the motif shape of the security element is freely selectable.
  • the security element may for example be a polygon, in particular a triangle, a - in particular non-rectangular - quadrangle or a polygon with at least five vertices.
  • the motif shape may at least partially have a non-linear edge and / or rounded corners and / or corner points, the edge in particular being at least partially round (circle, oval,...) And / or corner points (coats of arms, ).
  • the motif form of the security element can preferably correspond to the form visually visible to a viewer of the security element.
  • the delamination of the paint grid in the non-transfer areas can be assisted by an additional non-stick coating or by a locally more easily releasable release layer.
  • the adhesion of the paint grid to the non-stick coating may be selected to be smaller than the adhesion of the security element to the release layer, or the adhesion of the non-stick coating to the temporary carrier film may be selected to be less than the adhesion of the release layer to the temporary carrier film.
  • the stabilization layer can be applied both before or after the production of the security element layer structure.
  • the separation step is preferably carried out by punching, in particular mechanically or by means of laser.
  • a dividing line is created which extends through the security element layer structure into the temporary carrier foil.
  • the temporary carrier film can be configured as (at least) a double-layered film, wherein the dividing line only extends into the first film layer.
  • the carrier film has a release layer, which supports the detachment of the non-transmission areas and / or the transmission of the transmission areas.
  • FIG. 1 shows a schematic representation of a banknote 10 with a thin, motif-shaped security element 12, which is glued on the banknote paper in the form of a thin transfer element without a carrier film.
  • the security element 12 typically consists of a layer structure with a plurality of layers, such as an embossing lacquer layer and an optionally only partially existing metallization.
  • the exact one Layer structure of the security element 12 is not essential to the present invention and therefore not described in detail. It is merely important that the layer structure transferred to the banknote 10 does not contain a carrier film, so that the security element 12 can be designed to be particularly thin.
  • FIG Fig. 2 used type shown.
  • the transfer film 20 contains a temporary carrier film 22, which provides the necessary stability when producing the layer structure of the security element and during the transfer process.
  • the carrier film 22 is referred to in this description as temporary because it does not remain permanently in the layer composite of the security elements, but is subtracted after transfer to the target substrate.
  • the temporary carrier film 22 may optionally be provided with a release layer 24 on which the layer structure 26 of the desired security elements 12 is produced and which allows a simple separation of the layer structure 26 and the temporary carrier film 22.
  • the release layer 24 may be, for example, a UV lacquer layer, a wax layer or a release lacquer layer.
  • the security element layer structure 26 depending on the type of the desired security elements 12, consists of several layers, the exact nature of which is not essential except for the absence of a carrier foil for the present invention.
  • the lowermost layer of the security element layer structure 26 is an embossing lacquer layer which is already one for a Transferring and / or detaching sufficiently low adhesion to the temporary carrier film 22 has.
  • the layers of the layer structure 26 are typically produced over the entire surface of the temporary carrier film 22.
  • the layer structure 26 In order to be able to transfer generated security element layer structure 26 to the target substrate only in the desired transfer areas 40, in the present case in the motif form of the security element 12, the layer structure 26 must be separated into transfer areas 40 and non-transfer areas 42, and those between the transfer areas 40 Non-transmission areas 42 are removed before the application of the security elements.
  • a stabilization layer 28 in the form of a viscous UV lacquer layer is applied in regions on the security element layer structure 26, which is fixedly connected to the security element layer structure 26 and forms a stable lacquer grid 30 with this.
  • the stabilization layer 28 is applied in the form of the negative of the desired motif shape of the security elements 12, then it is present in the non-transfer regions 42 in which no security element layer structure 26 is to be transferred to the banknote paper during the transfer. In contrast, no stabilization layer 28 is applied in the transfer regions 40 in which the security element layer structure 26 is to be transferred to the banknote paper.
  • the stabilizing layer 28 has a high breaking elongation of 6.37% and a high breaking load of 15.3 N / mm 2 .
  • the transfer sheet 20 further includes two primer layers 32, 34 having a thickness of 1 ⁇ m and 2 ⁇ m, respectively, and a 6 ⁇ m thick heat sealant layer 36 for adhering the security element layer structure 26 to the target substrate.
  • the paint grid 30 applied to the carrier film 22 is separated in a separating step in the form of the motif-shaped transfer regions 40 and the non-transfer regions 42, for example by punching, in particular by a mechanical punch or a laser punch.
  • the punching takes place expediently into the optional release layer 24 in order to allow a clean separation.
  • the dividing line may extend into the temporary carrier foil, in particular into a first foil layer of two foil layers of the temporary carrier foil.
  • the two film layers can be laminated on each other.
  • the non-stamped second film layer prevents tearing of the temporary carrier film, in particular in further steps, such as the removal (detachment) of the non-transfer areas and / or the transmission of the transfer areas.
  • the transfer film 20 produced in this way can be temporarily stored for further processing or processed further immediately.
  • the lacquer grid 30 in the non-transfer areas 42 is then removed before application of the security elements 12, so that only the security element layer structure 26 present in the transfer areas 40 remains on the temporary carrier foil 22, as in FIG Fig. 3 illustrated.
  • This removal of the paint grid 30 from the non-transfer areas 42 is made possible by the tough stabilization layer 28, which gives the material of the non-transfer areas 42 the necessary stability for the detachment process.
  • FIG. 4 shows the appearance of the transfer sheet 20 after removing the paint grid 30 in supervision.
  • the security element layer structure 26 is now present in the desired motif shape, so that the security elements 12 can be transferred to the target substrate in a motif-like manner despite full-surface action of the heating roller and calender.
  • the temporary carrier foil 22 is peeled off, optionally with the aid of the only optional release layer 24, so that only the thin security element layer structure 26 and the thin primer layers 32, 34 remain on the target substrate.
  • FIG. 5 A modification of the transfer film of Fig. 2 is in Fig. 5 illustrated.
  • the stabilizing layer 52 of the transfer film 50 is substantially only in the non-transfer regions 42, in contrast to the embodiment of Fig. 2
  • the stabilization layer 52 is designed with a decreasing in the edge regions 54 layer thickness, so that foothills 56 of the stabilizing layer 52 a few millimeters in the transfer regions 40 extend.
  • the runners 56 in the bumped security elements 12 form lateral tabs of stabilization layer material which, after transfer to the target substrate, form edge anchoring elements that support anchoring of the security elements 12 on the target substrate.
  • the release layer 24 is only optional. The punching can also take place into the - possibly double-layered - temporary carrier layer 22.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Finance (AREA)
  • Accounting & Taxation (AREA)
  • Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Chemical Kinetics & Catalysis (AREA)
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  • Credit Cards Or The Like (AREA)
EP17001297.5A 2016-08-02 2017-07-27 Procédé et feuille de transfert permettant le transfert d'éléments de sécurité en forme de motif à un substrat cible Active EP3279005B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016009318.8A DE102016009318A1 (de) 2016-08-02 2016-08-02 Verfahren und Transferfolie zum Übertragen von motivförmigen Sicherheitselementen auf ein Zielsubstrat

Publications (2)

Publication Number Publication Date
EP3279005A1 true EP3279005A1 (fr) 2018-02-07
EP3279005B1 EP3279005B1 (fr) 2019-12-25

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EP17001297.5A Active EP3279005B1 (fr) 2016-08-02 2017-07-27 Procédé et feuille de transfert permettant le transfert d'éléments de sécurité en forme de motif à un substrat cible

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EP (1) EP3279005B1 (fr)
DE (1) DE102016009318A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023165738A1 (fr) * 2022-03-02 2023-09-07 Giesecke+Devrient ePayments GmbH Procédé de fabrication d'un film pour support de données en forme de carte, film et support de données en forme de carte

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018001379A1 (de) 2018-02-21 2019-08-22 Giesecke+Devrient Currency Technology Gmbh Transferträger
DE102022000409A1 (de) 2022-02-03 2023-08-03 Giesecke+Devrient Currency Technology Gmbh Sicherheitselement-Transfermaterial und Verfahren zum Herstellen desselben

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4130896A1 (de) * 1991-01-18 1992-07-23 Landis & Gyr Betriebs Ag Schichtverbund mit beugungsstrukturen
WO2010031543A1 (fr) * 2008-09-17 2010-03-25 Giesecke & Devrient Gmbh Matériau de transfert d'élément de sécurité à support multicouche
EP2848425A2 (fr) 2013-09-16 2015-03-18 Giesecke & Devrient GmbH Feuille sans fin en forme de bande et son utilisation
WO2016026731A1 (fr) * 2014-08-22 2016-02-25 Ovd Kinegram Ag Film de transfert et son procédé de fabrication

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005063495A1 (fr) * 2003-12-26 2005-07-14 Nhk Spring Co., Ltd. Support d'identification et procede d'identification d'un support d'identification
DE102012220903B4 (de) * 2012-11-15 2023-06-07 Bundesdruckerei Gmbh Verfahren zum Erzeugen eines Sicherheitsmerkmals für ein Wert- und/oder Sicherheitsprodukt und Wert- und/oder Sicherheitsprodukt (Inkjetdrucken)

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4130896A1 (de) * 1991-01-18 1992-07-23 Landis & Gyr Betriebs Ag Schichtverbund mit beugungsstrukturen
WO2010031543A1 (fr) * 2008-09-17 2010-03-25 Giesecke & Devrient Gmbh Matériau de transfert d'élément de sécurité à support multicouche
EP2848425A2 (fr) 2013-09-16 2015-03-18 Giesecke & Devrient GmbH Feuille sans fin en forme de bande et son utilisation
WO2016026731A1 (fr) * 2014-08-22 2016-02-25 Ovd Kinegram Ag Film de transfert et son procédé de fabrication

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023165738A1 (fr) * 2022-03-02 2023-09-07 Giesecke+Devrient ePayments GmbH Procédé de fabrication d'un film pour support de données en forme de carte, film et support de données en forme de carte

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EP3279005B1 (fr) 2019-12-25
DE102016009318A1 (de) 2018-02-08

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