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EP2848425B1 - Strip-shaped continuous film and its use - Google Patents

Strip-shaped continuous film and its use Download PDF

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Publication number
EP2848425B1
EP2848425B1 EP14003115.4A EP14003115A EP2848425B1 EP 2848425 B1 EP2848425 B1 EP 2848425B1 EP 14003115 A EP14003115 A EP 14003115A EP 2848425 B1 EP2848425 B1 EP 2848425B1
Authority
EP
European Patent Office
Prior art keywords
layer
strip
continuous foil
shaped continuous
foil
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.)
Active
Application number
EP14003115.4A
Other languages
German (de)
French (fr)
Other versions
EP2848425A2 (en
EP2848425A3 (en
EP2848425B2 (en
Inventor
Theodor Burchard
Björn Teufel
Bernd Oweger
Andreas Holzmeister
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 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
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Application filed by Giesecke and Devrient GmbH filed Critical Giesecke and Devrient GmbH
Publication of EP2848425A2 publication Critical patent/EP2848425A2/en
Publication of EP2848425A3 publication Critical patent/EP2848425A3/en
Publication of EP2848425B1 publication Critical patent/EP2848425B1/en
Application granted granted Critical
Publication of EP2848425B2 publication Critical patent/EP2848425B2/en
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Classifications

    • 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
    • B44C1/172—Decalcomanias provided with a layer being specially adapted to facilitate their release from a temporary carrier
    • 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
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/378—Special inks
    • B42D25/387—Special inks absorbing or reflecting ultraviolet light
    • 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
    • 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
    • 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
    • B42D25/46—Associating two or more layers using pressure
    • 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 strip-shaped endless film with a plurality of security elements, each of which is designed as removable from the endless foil transfer element for application to a security paper, a valuable item or the like.
  • the invention further relates to the use of the strip-shaped endless foil for securing a security paper or a valuable item.
  • Valuables such as branded goods or documents of value
  • security elements for the purpose of security, which allow verification of the authenticity of the object of value and at the same time serve as protection against unauthorized reproduction.
  • Valuables for the purposes of this invention are in particular banknotes, shares, identity cards, credit cards, health cards, bonds, certificates, vouchers, checks, high-quality admission tickets, but also other papers that are subject to counterfeiting, such as passports and other identity documents, as well as product security elements such as labels, seals, packaging, Branded articles and the like.
  • the term valuable item includes hereinafter all such items, documents and product protection means.
  • security paper is understood as the precursor to a value document which can not yet be processed.
  • security paper also includes paper-like substrates, e.g. Plastic substrates or multi-layer substrates, such as a plastic / paper / plastic substrate or a paper / plastic / paper substrate, a.
  • a security element is usually provided with a function layer having a security feature, for example a hologram or an optically variable coating. It is particularly useful if the security element by means of an adhesive, for example by means of a heat sealing lacquer, is glued to the valuables or the security paper.
  • a security element is eg a patch, in particular a hologram patch.
  • the security element is usually provided together with other security elements on a serving as a carrier, strip-shaped continuous foil and transferred from there to the surface of a security paper or a valuable item. Since the carrier film is removed in the application of the security element on the security paper or on the object of value from the surface of the security element, hereinafter the term (endless) transfer film or (endless) transfer belt and instead of the term security element of the term Term transfer element used.
  • a strip-shaped continuous film is provided as a roll product, i. as an endless belt wound on a roll, so to speak, wherein the endless film is of course not endless and thus infinitely long, but in particular has a length in the range of kilometers.
  • Machines for applying security elements to the surface of a security paper or a valuable item are commercially available, eg OptiNota H® from König & Bauer AG.
  • Such a device allows the exact fit or register accurate application of security elements in the form of film strips on paper sheets.
  • the film strip is applied by bringing a certain portion of the strip-shaped endless foil (hereinafter referred to as "foil strip section") into contact with a heatable roll and thus heating it. The heating results in softening of the heat sealing lacquer present on the surface of the foil strip section. Of the Film strip section is then bonded to the paper sheet by means of the molten heat seal lacquer.
  • the foil strip section described in the preceding paragraph simultaneously defines the two breaklines at which the security element structure ruptures. All layers above the carrier film in the security element structure, in particular an embossing lacquer layer, tear during detachment or removal of the carrier film at the point at which the endless film did not come into contact with the heated roller.
  • thermoplastic embossing-based films In practice, it has been found that the hot roll application of thermoplastic embossing-based films is not a problem.
  • thermoplastic embossing varnish films due to the brittleness of the UV varnish, tearing occurred in the course of the rupture described in the preceding paragraph.
  • tinsel formation refers to the detachment of dust, crumbs and chip-shaped parts from the cut surface.
  • the baubles are formed when the UV varnish breaks and have a disruptive effect on the subsequent processing steps during (value-document) printing. In particular, when depositing flakes on printing rollers within printing presses, disturbances in the printed image may occur.
  • the UV varnish within a foil strip applied to a paper sheet must be broken after application at the beginning and at the end of the paper sheet.
  • a clean, smooth breaking of the UV lacquer by means of laser cutting is not possible in the case of a transfer film, because in addition the carrier foil has to be removed.
  • the object of the present invention is to provide a strip-shaped endless foil which is improved over the prior art and its use for securing a security paper or a valuable article.
  • This object is achieved by the feature combinations defined in the independent claims.
  • the feature combinations defined in the dependent claims represent preferred embodiments.
  • FIG. 1 and FIG. 2a refer to a comparative example. For the sake of better clarity, a representation true to scale and proportion is dispensed with in the figures.
  • FIG. 1 shows a schematic representation of a paper sheet 1, on which four transfer film strips 2 have been applied according to the prior art.
  • the paper sheet 1 shown in the figure can be printed in subsequent steps, for example by means of screen, flexo and intaglio printing methods, and finally cut into a multiplicity of value documents, in particular banknotes.
  • the applied transfer film strips 2 originate from a strip-shaped endless foil.
  • the application of the transfer film strips 2 was carried out by having defined sections the strip-shaped endless film with a heated roller in contact and were heated in this way. The heating resulted in softening of the heat sealing lacquer present on the surface of the defined film strip sections.
  • the film strip sections were then bonded to the paper sheet 1 by means of the molten heat-sealing lacquer.
  • the Indian FIG. 1 shown transfer film strip 2 contains in its layer structure, inter alia, a continuous or continuous UV embossing lacquer layer. Due to its brittleness, the UV varnish tends to form baubles. As can be seen from the enlargement of the detail "A" shown to the left of the paper sheet 1, unclean break edges and breakouts or flakes 3 occur. The baubles 3 are formed when the UV coating breaks and impair the printability of the paper sheet 1 in the subsequent printing process.
  • FIG. 2a shows a schematic representation of the layer structure of a strip-shaped endless foil 4 according to the prior art, which in the in the FIG. 1 Comparative example shown was used.
  • the endless foil 4 contains a carrier foil 5, in the present case a PET foil.
  • Above the carrier foil 5 are in succession a UV embossing lacquer layer 6, a primer layer 7 and a heat seal lacquer layer 8. It is characteristic of the layer structure of the strip-shaped endless foil 4 according to the prior art that each of the UV lacquer layer, primer layer and heat seal lacquer layer is in the form of a continuous or continuous layer is present.
  • the two in the FIGS. 2a to 2e The vertical straight lines 14 illustrated illustrate the predetermined breaking edges within the security element layer structure present on the carrier foil 5.
  • the UV lacquer 6 must be broken at the points of the break edges, which is what the in the FIG. 1 shown flitter 3 result.
  • FIG. 2b shows a schematic representation of the layer structure of a strip-shaped endless foil 9 according to a first embodiment of the invention.
  • the UV embossing lacquer layer 6, the primer layer 7 and the heat sealing lacquer layer 8 are each recessed.
  • the endless film 9 is produced by providing the carrier film 5 (for example a PET film) and printing the carrier film 5 with a UV lacquer layer 6 which has recesses. Subsequently, a primer layer 7 and a heat sealing lacquer layer 8 are printed successively, each having recesses.
  • the primer layer 7 has larger dimensions than the UV lacquer 6.
  • the heat seal lacquer layer 8 in turn has larger dimensions than the primer layer 7.
  • Figure 2c shows a schematic representation of the layer structure of a strip-shaped endless foil 10 according to a second embodiment of the invention.
  • the endless film 10 has a continuous or continuous release layer or release layer 11, which facilitates the detachment of the security element layer structure comprising the layers 6, 7 and 8 from the carrier film 5.
  • the endless film 10 is produced by providing the carrier film 5 and printing the carrier film 5 over the entire surface with a release layer 11. This is followed by printing the release layer 11 with a UV lacquer layer 6 which has recesses. Subsequently, a primer layer 7 and a heat sealing lacquer layer 8 are printed successively, each having recesses.
  • the primer layer 7 has larger dimensions than the UV lacquer 6.
  • the heat sealing lacquer layer 8 in turn has larger dimensions than the primer layer 7.
  • the release layer 11 prevents a connection of the primer layer 7 and the heat sealing lacquer layer 8 with the carrier foil 5. This occurs after the gluing with the paper , ie, after the heat-sealing operation, not to a tearing of the paper, because the primer 7 has no direct contact with the film 5. Compared with the dimensions of the UV varnish 6, the primer 7 and the heat sealing varnish 8 each have larger dimensions. This "lengthwise protruding" of the primer 7 or of the heat-sealing lacquer 8 with respect to the UV lacquer 6 is expediently in a region in which, due to the machine, gluing to the paper, ie to heat-sealing, occurs.
  • Figure 2d shows a schematic representation of the layer structure of a strip-shaped endless foil 12 according to a third embodiment of the invention.
  • the release layer or release layer 13 is not continuous or continuous, but formed discontinuously.
  • a good initial peel ie, a good "initial release”
  • the UV lacquer 6, primer 7, and heat sealing lacquer 8 having the security element layer build-up from the carrier foil 5 and gluing of the primer 7 to the carrier foil must be ensured 5 are prevented.
  • the release layer 13 according to the Figure 2d only apply in a small area.
  • each security element has exactly one interface region at each of its two ends extending perpendicular to the longitudinal direction of the strip-shaped endless film.
  • the separating layer arranged between two adjacent security elements has a recess.
  • FIG. 2e shows a schematic representation of the layer structure of a strip-shaped endless foil 12 according to a fourth embodiment of the invention.
  • the fourth embodiment is a modification of the third embodiment.
  • the release layer or release layer 13 is not continuous or continuous, but formed discontinuously.
  • the separate separating layer regions 13 are arranged such that each security element has exactly one separating layer region at each of its two ends extending perpendicular to the longitudinal direction of the strip-shaped endless foil.
  • the separating layer arranged between two adjacent security elements has no recess, ie the separating layer arranged between two adjacent security elements is formed continuously.
  • the dimension of the separating layer which is increased in comparison to the third exemplary embodiment, is advantageous because the separating layer can be produced more easily by printing on the film by printing technology.
  • FIG. 2f shows a schematic representation of the layer structure of a strip-shaped endless film 12 according to a fifth embodiment of the invention.
  • the fifth embodiment is a modification of the third embodiment ( Fig. 2d ).
  • a release layer or release layer 17 is not continuous or continuous, but formed discontinuously.
  • the separate separating layer regions 17a, 17b of the separating layer 17 are arranged so that each security element 18 has exactly one separating layer region 17a, 17b at each of its two ends extending perpendicular to the longitudinal direction of the strip-shaped endless foil.
  • the strip-shaped endless foil 12 has two (UV) lacquer layers 6, 6a.
  • the endless film 12 is produced by providing the carrier film 5 and applying, for example, printing on the carrier film 5 with a discontinuous separating layer or release layer 17. This is followed by the application of a UV coating layer 6 which has recesses. The beginning of each recess of the UV lacquer layer 6 is in the region of the release layer 17. Subsequently, a further UV lacquer layer 6a applied, which also has recesses. The recess of the further UV lacquer layer 6a are larger than the recesses of the UV lacquer layer 6, so that the (further) UV lacquer layer 6a does not envelop the UV lacquer layer 6. Furthermore, a primer layer 7 and a heat sealing lacquer layer 8 are printed successively, each having recesses.
  • the primer layer 7 has larger dimensions than the UV lacquer layers 6 and 6a.
  • the discontinuous release layer 17 prevents the primer layer 7 and the heat sealing lacquer layer 8 from bonding to the carrier foil 5. In this way, adhesion to the paper, ie after the heat sealing process, does not occur a tearing of the paper, because the primer 7 has no direct contact with the film 5.
  • the primer 7 and the heat sealing lacquer 8 each have larger dimensions.
  • This "lengthwise protruding" of the primer 7 or of the heat sealing lacquer 8 relative to the (UV) lacquers 6, 6a is expediently located in a region in which, due to the machine, bonding with the paper, ie heat sealing, occurs.
  • Figure 2g shows a schematic representation of the layer structure of a strip-shaped endless foil 12 according to a sixth embodiment of the invention.
  • the sixth embodiment is a modification of the fourth embodiment ( Fig. 2e ).
  • a release layer or release layer is not continuous or continuous, but formed discontinuously.
  • the separate separating layer regions 19 are arranged such that each security element 18 has exactly one separating layer region 19 at each of its two ends extending perpendicularly to the longitudinal direction of the strip-shaped endless foil 12.
  • the strip-shaped endless foil 12 has a (discontinuous) release layer 19, which fill the recesses of the UV lacquer layer 6 (off).
  • the (discontinuous) release layer 19 has a layer thickness which is greater than the layer thickness of the UV lacquer layer 6. In other words, the (discontinuous) release layer 19 wraps around the edge regions the UV lacquer layer 6 a. Thus, the (discontinuous) release layer or the respective separating layer region 19 overlaps the ends of the UV lacquer layer 6.
  • the production of the endless film 12 is carried out by providing the carrier film 5 and applying e.g. Printing the carrier film 5 with a UV lacquer layer 6 having recesses. This is followed by the application of a (discontinuous) release layer which fills the recesses of the UV varnish / UV varnish layer 6 and overlaps the UV varnish layer 6. Furthermore, a primer layer 7 and a heat sealing lacquer layer 8 are printed successively, each having recesses.
  • the primer layer 7 may have larger dimensions than the UV lacquer layer 6. In other words, the primer layer 7 may protrude beyond the UV lacquer layer, i. protrude into the region of the recess of the UV lacquer layer 6. Furthermore, the primer layer 7 overlaps the release layer or the respective separating layer regions 19.
  • the heat sealing lacquer layer 8 in turn, has larger dimensions than the primer layer 7 and thus overlaps the primer layer 7. Compared with the dimensions of the UV lacquer or UV lacquer layer 6, FIG Primer 7 and the heat sealing lacquer 8 each have larger dimensions.
  • This "lengthy protrusion" of the primer 7 or of the heat-sealing lacquer 8 with respect to the UV lacquer 6 is expediently in a region in which, due to the machine, it still sticks to the paper, i. to a heat seal, comes.
  • FIG. 3 shows a schematic representation of a paper sheet 15, on the four transfer film strip 16 according to the above, in conjunction with FIG. 2b described first embodiment have been applied.
  • the applied transfer film strips 16 originate from a strip-shaped endless film.
  • the endless film is composed of repeating units, each in the FIG. 4 have shown construction.
  • the carrier film 5 contains in each repeat unit a functional feature having a functional feature layer, in the present case a UV embossing lacquer layer 6, which has a planar diffraction structure.
  • a primer layer 7 is arranged above the embossing lacquer layer 6, which is arranged.
  • the UV embossing lacquer layer 6 and the primer layer 7 are such that the UV embossing lacquer layer 6 is surrounded in a U-shape by the primer layer 7.
  • the primer layer 7 in turn is surrounded in a U-shape by the layer of hot-seal adhesive 8.
  • the (UV) lacquer layer or embossing lacquer layer or the UV lacquer can be composed of several layers.
  • the paint layers 6 and 6a may be made of the same or different materials.
  • U-shaped surrounding of a layer is to be understood in the present description as meaning that the relevant layer is surrounded on three sides in the form of a rectangle by a further layer.
  • the rectangle may or may not necessarily have a regular geometry, i. have orthogonal interior angles.
  • There may also be a rectangle-like layered structure, e.g. the shape of a trapezoid, in particular the shape of an isosceles trapezoid, assumes.
  • the advantageous effect of the present invention has been described in the preceding embodiments in the context of the tinsel-forming UV embossing lacquer layer.
  • the invention is not limited to transfer elements with a UV embossing lacquer layer, but is suitable for all transfer elements which include a tiling-prone functional layer having a security feature.

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Description

Die Erfindung betrifft eine streifenförmige Endlosfolie mit einer Vielzahl von Sicherheitselementen, die jeweils als von der Endlosfolie ablösbares Transferelement zum Aufbringen auf ein Sicherheitspapier, einem Wertgegenstand oder dergleichen ausgebildet sind. Die Erfindung betrifft des Weiteren die Verwendung der streifenförmigen Endlosfolie zur Absicherung eines Sicherheitspapiers oder eines Wertgegenstandes.The invention relates to a strip-shaped endless film with a plurality of security elements, each of which is designed as removable from the endless foil transfer element for application to a security paper, a valuable item or the like. The invention further relates to the use of the strip-shaped endless foil for securing a security paper or a valuable item.

Wertgegenstände, wie etwa Markenartikel oder Wertdokumente, werden zur Absicherung oft mit Sicherheitselementen ausgestattet, die eine Überprüfung der Echtheit des Wertgegenstandes gestatten und die zugleich als Schutz vor unerlaubter Reproduktion dienen. Wertgegenstände im Sinne dieser Erfindung sind insbesondere Banknoten, Aktien, Ausweise, Kreditkarten, Gesundheitskarten, Anleihen, Urkunden, Gutscheine, Schecks, hochwertige Eintrittskarten, aber auch andere fälschungsgefährdete Papiere, wie Pässe und sonstige Ausweisdokumente, sowie Produktsicherungselemente, wie Etiketten, Siegel, Verpackungen, Markenartikel und dergleichen. Der Begriff Wertgegenstand schließt im Folgenden alle derartigen Gegenstände, Dokumente und Produktsicherungsmittel ein. Unter dem Begriff Sicherheitspapier wird die noch nicht umlauffähige Vorstufe zu einem Wertdokument verstanden. Der Begriff Sicherheitspapier schließt im Folgenden auch Papier-ähnliche Substrate, z.B. Kunststoffsubstrate oder Mehrschichtsubstrate, wie etwa ein Kunststoff/Papier/Kunststoff-Substrat oder ein Papier/Kunststoff/Papier-Substrat, ein.Valuables, such as branded goods or documents of value, are often provided with security elements for the purpose of security, which allow verification of the authenticity of the object of value and at the same time serve as protection against unauthorized reproduction. Valuables for the purposes of this invention are in particular banknotes, shares, identity cards, credit cards, health cards, bonds, certificates, vouchers, checks, high-quality admission tickets, but also other papers that are subject to counterfeiting, such as passports and other identity documents, as well as product security elements such as labels, seals, packaging, Branded articles and the like. The term valuable item includes hereinafter all such items, documents and product protection means. The term security paper is understood as the precursor to a value document which can not yet be processed. The term security paper also includes paper-like substrates, e.g. Plastic substrates or multi-layer substrates, such as a plastic / paper / plastic substrate or a paper / plastic / paper substrate, a.

Ein Sicherheitselement ist üblicherweise mit einer ein Sicherheitsmerkmal aufweisenden Funktionsschicht, z.B. ein Hologramm oder eine optisch variable Beschichtung, versehen. Besonders zweckmäßig ist es, wenn das Sicherheitselement mittels eines Klebstoffes, z.B. mittels eines Heißsiegellacks, auf den Wertgegenstand oder das Sicherheitspapier aufgeklebt wird. Ein solches Sicherheitselement ist z.B. ein Patch, insbesondere ein Hologramm-Patch.A security element is usually provided with a function layer having a security feature, for example a hologram or an optically variable coating. It is particularly useful if the security element by means of an adhesive, for example by means of a heat sealing lacquer, is glued to the valuables or the security paper. Such a security element is eg a patch, in particular a hologram patch.

Das Sicherheitselement wird üblicherweise zusammen mit weiteren Sicherheitselementen auf einer als Träger dienenden, streifenförmigen Endlosfolie bereitgestellt und von dort auf die Oberfläche eines Sicherheitspapiers oder eines Wertgegenstandes übertragen. Da die Trägerfolie bei der Applikation des Sicherheitselements auf das Sicherheitspapier oder auf den Wertgegenstand von der Oberfläche des Sicherheitselements entfernt wird, wird nachstehend anstelle des Begriffs Endlosfolie auch der Begriff (Endlos-)Transferfolie bzw. (Endlos-)Transferband und anstelle des Begriffs Sicherheitselement der Begriff Transferelement verwendet.The security element is usually provided together with other security elements on a serving as a carrier, strip-shaped continuous foil and transferred from there to the surface of a security paper or a valuable item. Since the carrier film is removed in the application of the security element on the security paper or on the object of value from the surface of the security element, hereinafter the term (endless) transfer film or (endless) transfer belt and instead of the term security element of the term Term transfer element used.

Eine streifenförmige Endlosfolie wird als Rollenware bereitgestellt, d.h. als sozusagen endloses Band aufgewickelt auf einer Rolle, wobei die Endlosfolie selbstverständlich nicht endlos und damit unendlich lang ist, sondern insbesondere eine Länge im Bereich von Kilometern aufweist.A strip-shaped continuous film is provided as a roll product, i. as an endless belt wound on a roll, so to speak, wherein the endless film is of course not endless and thus infinitely long, but in particular has a length in the range of kilometers.

Maschinen für das Aufbringen von Sicherheitselementen auf die Oberfläche eines Sicherheitspapiers oder eines Wertgegenstandes sind kommerziell erhältlich, z.B. OptiNota H® der König&Bauer AG. Eine solche Vorrichtung ermöglicht die passgenaue bzw. registergenaue Aufbringung von Sicherheitselementen in Form von Folienstreifen auf Papierbögen. Das Aufbringen des Folienstreifens erfolgt dadurch, dass ein bestimmter Abschnitt der streifenförmigen Endlosfolie (nachstehend "Folienstreifen-Abschnitt" genannt) mit einer beheizbaren Walze in Kontakt kommt und auf diese Weise erwärmt wird. Die Erwärmung führt zu einem Erweichen des auf der Oberfläche des Folienstreifen-Abschnitts vorhandenen Heißsiegellacks. Der Folienstreifen-Abschnitt wird dann mittels des geschmolzenen Heißsiegellacks mit dem Papierbogen verklebt.Machines for applying security elements to the surface of a security paper or a valuable item are commercially available, eg OptiNota H® from König & Bauer AG. Such a device allows the exact fit or register accurate application of security elements in the form of film strips on paper sheets. The film strip is applied by bringing a certain portion of the strip-shaped endless foil (hereinafter referred to as "foil strip section") into contact with a heatable roll and thus heating it. The heating results in softening of the heat sealing lacquer present on the surface of the foil strip section. Of the Film strip section is then bonded to the paper sheet by means of the molten heat seal lacquer.

Mit dem im vorstehenden Absatz beschriebenen Folienstreifen-Abschnitt werden gleichzeitig die beiden Bruchkanten festgelegt, an denen der Sicherheitselement-Aufbau reißt. Sämtliche oberhalb der Trägerfolie vorhandenen Schichten im Sicherheitselement-Aufbau, insbesondere eine Prägelackschicht, reißen beim Ablösen bzw. Abziehen der Trägerfolie an der Stelle, an der die Endlosfolie nicht mit der beheizten Walze in Berührung kam.The foil strip section described in the preceding paragraph simultaneously defines the two breaklines at which the security element structure ruptures. All layers above the carrier film in the security element structure, in particular an embossing lacquer layer, tear during detachment or removal of the carrier film at the point at which the endless film did not come into contact with the heated roller.

In der Praxis hat sich gezeigt, dass die Heißwalzenapplikation von auf thermoplastischem Prägelack basierenden Folien keine Probleme darstellt. Bei Folien mit auf UV-Lack basierendem Prägelack kam es allerdings infolge der Sprödigkeit des UV-Lacks im Zuge des im vorstehenden Absatz beschriebenen Reißens zur Flitterbildung. Unter dem Begriff Flitterbildung versteht man das Ablösen von Staub-, Brösel- und Spänchen-förmigen Teilen aus der Schnittfläche. Die Flitter entstehen beim Brechen des UV-Lacks und wirken sich störend auf die nachfolgenden Bearbeitungsschritte beim (Wertdokument-)Druck aus. Insbesondere kann es beim Ablegen von Flittern auf Druckwalzen innerhalb von Druckmaschinen zu Störungen im Druckbild kommen.In practice, it has been found that the hot roll application of thermoplastic embossing-based films is not a problem. However, in the case of UV varnish-based embossing varnish films, due to the brittleness of the UV varnish, tearing occurred in the course of the rupture described in the preceding paragraph. The term "tinsel formation" refers to the detachment of dust, crumbs and chip-shaped parts from the cut surface. The baubles are formed when the UV varnish breaks and have a disruptive effect on the subsequent processing steps during (value-document) printing. In particular, when depositing flakes on printing rollers within printing presses, disturbances in the printed image may occur.

Der UV-Lack innerhalb eines auf einen Papierbogen applizierten Folienstreifens muss nach der Applikation am Anfang und am Ende des Papierbogens gebrochen werden. Ein sauberes, glattes Brechen des UV-Lacks mittels Laser-Schnitt ist im Falle einer Transfer-Folie nicht möglich, weil zusätzlich noch die Trägerfolie entfernt werden muss.The UV varnish within a foil strip applied to a paper sheet must be broken after application at the beginning and at the end of the paper sheet. A clean, smooth breaking of the UV lacquer by means of laser cutting is not possible in the case of a transfer film, because in addition the carrier foil has to be removed.

DE 10 2008 021944 A1 offenbart eine Endlosfolie nach dem Oberbegriff des Anspruchs 1 und ein Verfahren zum parallelen Aufbringen von auf zwei oder mehr streifenförmigen Endlosfolien vorliegenden Sicherheitselementen auf eine Substratbahn, wobei folgende Verfahrensschritte durchgeführt werden:

  • Bereitstellen einer Substratbahn und von zwei oder mehr streifenförmigen Endlosfolien mit aufzubringenden Sicherheitselementen;
  • Beschichten der streifenförmigen Endlosfolien mit mindestens einer strahlungsvernetzbaren Schicht, die mindestens einer strahlungsvernetzbare Komponente enthält, und mit einer Kleberschicht;
  • Zusammenführen der beschichteten Endlosfolien mit der Substratbahn in Bewegung entlang der endlosen Längsrichtung der Substratbahn und der Endlosfolien; und
  • UV-Bestrahlen der Sicherheitselemente der Endlosfolien auf der Substratbahn mit langgestreckten UV-Strahlern, die mit ihren Längsachsen parallel zur Bewegungsrichtung der Substratbahn ausgerichtet sind, wobei in Überlappung mit jeder streifenförmigen Endlosfolie zumindest ein UV-Strahler angeordnet ist, um die strahlungsvernetzbare Komponente der mindestens einen strahlungsvemetzbaren Schicht zu vernetzen.
DE 10 2008 021944 A1 discloses an endless film according to the preamble of claim 1 and a method for the parallel application of security elements present on two or more strip-shaped endless films onto a substrate web, wherein the following method steps are carried out:
  • Providing a substrate web and two or more strip-shaped endless films with security elements to be applied;
  • Coating the strip-shaped continuous films with at least one radiation-crosslinkable layer containing at least one radiation-crosslinkable component and with an adhesive layer;
  • Merging the coated continuous films with the substrate web in movement along the endless longitudinal direction of the substrate web and the endless films; and
  • UV irradiation of the security elements of the endless films on the substrate web with elongated UV lamps, which are aligned with their longitudinal axes parallel to the direction of movement of the substrate web, wherein in overlapping with each strip-shaped endless film at least one UV lamp is arranged to the radiation-crosslinkable component of the at least one crosslinkable radiation-crosslinkable layer.

Davon ausgehend liegt der vorliegenden Erfindung die Aufgabe zugrunde, eine gegenüber dem Stand der Technik verbesserte streifenförmige Endlosfolie und deren Verwendung zur Absicherung eines Sicherheitspapiers oder eines Wertgegenstandes bereitzustellen. Diese Aufgabe wird durch die in den unabhängigen Ansprüchen definierten Merkmalskombinationen gelöst. Die in den abhängigen Ansprüchen definierten Merkmalskombinationen stellen bevorzugte Ausführungsformen dar.Based on this, the object of the present invention is to provide a strip-shaped endless foil which is improved over the prior art and its use for securing a security paper or a valuable article. This object is achieved by the feature combinations defined in the independent claims. The feature combinations defined in the dependent claims represent preferred embodiments.

Zusammenfassung der ErfindungSummary of the invention

  1. 1. (Erster Aspekt) Streifenförmige Endlosfolie mit einer Vorderseite und einer Rückseite, wobei die Vorderseite eine Vielzahl von Sicherheitselementen aufweist, die in der Längsrichtung der streifenförmigen Endlosfolie zueinander beabstandet angeordnet sind und jeweils als von der Endlosfolie ablösbares Transferelement zum Aufbringen auf ein Sicherheitspapier oder einem Wertgegenstand ausgebildet sind und jedes Sicherheitselement ausgehend von der Vorderseite der Endlosfolie her betrachtet eine ein Sicherheitsmerkmal aufweisende Funktionsschicht mit der Länge F und eine oberhalb der Funktionsschicht angeordnete Schicht aus Heißsiegelkleber mit der Länge H aufweist, wobei die Längen F und H jeweils auf die Längsrichtung der streifenförmigen Endlosfolie bezogen sind und die Beziehung F < H erfüllen und die ein Sicherheitsmerkmal aufweisende Funktionsschicht und die Schicht aus Heißsiegelkleber so beschaffen sind, dass die Funktionsschicht U-förmig von der Schicht aus Heißsiegelkleber umgeben ist. Die Differenz "H-F" beträgt vorzugsweise bis zu 20 Millimeter. Die als Träger von Sicherheitselementen dienende Endlosfolie basiert vorzugsweise auf einer PET-Folie.1. (First aspect) A strip-shaped endless film having a front side and a back side, wherein the front side has a plurality of security elements, which are arranged spaced apart in the longitudinal direction of the strip-shaped endless foil to each other and each as removable from the endless film transfer element for application to a security paper or Wertgegenstand are formed and each security element, starting from the front side of the endless film ago considered a security feature having functional layer with the length F and arranged above the functional layer layer of heat seal adhesive with the length H, wherein the lengths F and H respectively to the longitudinal direction of the strip-shaped Continuous film are covered and the relationship F <H meet and the functional feature having a functional layer and the layer of heat-seal adhesive are such that the functional layer is U-shaped from the layer of Heißs surrounded by adhesive. The difference "H-F" is preferably up to 20 millimeters. The continuous foil serving as a carrier of security elements is preferably based on a PET film.
  2. 2. (Bevorzugte Ausgestaltung) Streifenförmige Endlosfolie nach Absatz 1, wobei die ein Sicherheitsmerkmal aufweisende Funktionsschicht ausgehend von der Vorderseite der Endlosfolie her betrachtet eine Prägelackschicht mit der Länge L ist, die eine flächige Beugungsstruktur aufweist, und eine oberhalb der Prägelackschicht angeordnete Primerschicht mit der Länge P aufweist, wobei die Längen L und P jeweils auf die Längsrichtung der streifenförmigen Endlosfolie bezogen sind und die Beziehung L < P < H erfüllen und die Prägelackschicht und die Primerschicht so beschaffen sind, dass die Prägelackschicht U-förmig von der Primerschicht umgeben ist und die Primerschicht U-förmig von der Schicht aus Heißsiegelkleber umgeben ist. Die Prägelackschicht ist vorzugsweise ein UV-Lack. Die Prägelackschicht kann darüber hinaus eine Metallisierung aufweisen. Die Differenz "P-L" beträgt vorzugsweise bis zu 10 Millimeter. Die Differenz "H-P" beträgt vorzugsweise bis zu 10 Millimeter.2. (Preferred embodiment) Strip-shaped endless film according to paragraph 1, wherein the functional feature functional layer, viewed from the front side of the endless film, is an embossing lacquer layer of length L having a planar diffraction structure, and a primer layer of length arranged above the embossing lacquer layer P, wherein the lengths L and P respectively are related to the longitudinal direction of the strip-shaped endless film and satisfy the relationship L <P <H and the embossing lacquer layer and the primer layer are such that the embossing lacquer layer is surrounded in a U-shape by the primer layer and the primer layer is surrounded in a U-shape by the layer of heat-sealable adhesive is. The embossing lacquer layer is preferably a UV lacquer. The embossing lacquer layer may also have a metallization. The difference "PL" is preferably up to 10 millimeters. The difference "HP" is preferably up to 10 millimeters.
  3. 3. (Bevorzugte Ausgestaltung) Streifenförmige Endlosfolie nach Absatz 1 oder 2, wobei zwischen der Endlosfolie und der Vielzahl von Sicherheitselementen eine kontinuierliche Trennschicht angeordnet ist.3. (Preferred Embodiment) Strip-shaped endless film according to paragraph 1 or 2, wherein a continuous separating layer is arranged between the endless foil and the plurality of security elements.
  4. 4. (Bevorzugte Ausgestaltung) Streifenförmige Endlosfolie nach Absatz 1 oder 2, wobei zwischen der Endlosfolie und der Vielzahl von Sicherheitselementen eine diskontinuierliche Trennschicht mit separaten Trennschicht-Bereichen angeordnet ist.4. (Preferred Embodiment) Strip-shaped endless film according to paragraph 1 or 2, wherein between the endless film and the plurality of security elements, a discontinuous separation layer is arranged with separate separation layer areas.
  5. 5. (Bevorzugte Ausgestaltung) Streifenförmige Endlosfolie nach Absatz 1, wobei zwischen der Endlosfolie und der Vielzahl von Sicherheitselementen eine diskontinuierliche Trennschicht mit separaten Trennschicht-Bereichen angeordnet ist, sodass jedes Sicherheitselement an jedem seiner beiden senkrecht zur Längsrichtung der streifenförmigen Endlosfolie verlaufenden Enden genau einen Trennschicht-Bereich aufweist, wobei jeder Trennschicht-Bereich mit der Funktionsschicht und der Schicht aus Heißsiegelkleber jeweils eine gemeinsame Grenzfläche bildet.5. (Preferred embodiment) Strip-shaped endless film according to paragraph 1, wherein between the endless foil and the plurality of security elements, a discontinuous separation layer is arranged with separate separation layer areas, so that each security element at each of its two perpendicular to the longitudinal direction of the strip-shaped endless film ends exactly one separation layer Each separating layer region with the functional layer and the layer of heat-sealable adhesive each forms a common interface.
  6. 6. (Bevorzugte Ausgestaltung) Streifenförmige Endlosfolie nach Absatz 5, wobei die streifenförmige Endlosfolie eine weitere Funktionsschicht aufweist, die zwischen der Funktionsschicht und der Schicht aus Heißsiegelkleber angeordnet ist, und die weitere Funktionsschicht in Längsrichtung der streifenförmigen Endlosfolie die Länge WF aufweist und die Beziehung F < WF < H erfüllt ist.6. (Preferred embodiment) Strip-shaped endless film according to paragraph 5, wherein the strip-shaped endless film has a further functional layer which is arranged between the functional layer and the layer of heat-sealable adhesive, and the further functional layer in the longitudinal direction of the strip-shaped endless foil has the length WF and the relationship F <WF <H is satisfied.
  7. 7. (Bevorzugte Ausgestaltung) Streifenförmige Endlosfolie nach Absatz 2, wobei zwischen der Endlosfolie und der Vielzahl von Sicherheitselementen eine diskontinuierliche Trennschicht mit separaten Trennschicht-Bereichen angeordnet ist, sodass jedes Sicherheitselement an jedem seiner beiden senkrecht zur Längsrichtung der streifenförmigen Endlosfolie verlaufenden Enden genau einen Trennschicht-Bereich aufweist, wobei jeder Trennschicht-Bereich mit der Prägelackschicht, der Primerschicht und der Schicht aus Heißsiegelkleber jeweils eine gemeinsame Grenzfläche bildet.7. (Preferred embodiment) Strip-shaped endless film according to paragraph 2, wherein between the endless foil and the plurality of security elements, a discontinuous separation layer is arranged with separate separation layer areas, so that each security element at each of its two perpendicular to the longitudinal direction of the strip-shaped endless film ends exactly one separation layer Each separating layer region with the embossing lacquer layer, the primer layer and the layer of hot-seal adhesive each forms a common interface.
  8. 8. (Bevorzugte Ausgestaltung) Streifenförmige Endlosfolie nach Absatz 7, wobei die streifenförmige Endlosfolie eine weitere Funktionsschicht aufweist, die zwischen der Prägelackschicht und der Primerschicht angeordnet ist, und die weitere Funktionsschicht in Längsrichtung der streifenförmigen Endlosfolie die Länge WP aufweist und die Beziehung L < WP < P erfüllt ist.8. (Preferred embodiment) Strip-shaped endless film according to paragraph 7, wherein the strip-shaped endless film has a further functional layer which is arranged between the embossing lacquer layer and the primer layer, and the further functional layer in the longitudinal direction of the strip-shaped endless foil has the length WP and the relationship L <WP <P is satisfied.
  9. 9. (Bevorzugte Ausgestaltung) Streifenförmige Endlosfolie nach Absatz 1 oder 2, wobei zwischen der Endlosfolie und der Vielzahl von Sicherheitselementen eine diskontinuierliche Trennschicht mit separaten Trennschicht-Bereichen angeordnet ist, sodass an jedem seiner beiden senkrecht zur Längsrichtung der streifenförmigen Endlosfolie verlaufenden Enden eines Sicherheitselements ein Trennschicht-Bereich angrenzt und genau ein Trennschicht-Bereich zwischen zwei (benachbarten) Sicherheitselementen angeordnet ist.9. (Preferred embodiment) strip-shaped endless film according to paragraph 1 or 2, wherein between the endless foil and the plurality of security elements, a discontinuous separation layer is arranged with separate separation layer areas, so that at each of its two perpendicular to the longitudinal direction of the strip-shaped endless film extending ends of a security element Interface layer adjacent and exactly one interface region between two (adjacent) security elements is arranged.
  10. 10. (weiterer Aspekt) Streifenförmige Endlosfolie mit einer Vorderseite und einer Rückseite, wobei die Vorderseite eine Vielzahl von Sicherheitselementen aufweist, die in der Längsrichtung der streifenförmigen Endlosfolie zueinander beabstandet angeordnet sind und jeweils als von der Endlosfolie ablösbares Transferelement zum Aufbringen auf ein Sicherheitspapier oder einem Wertgegenstand ausgebildet sind und jedes Sicherheitselement ausgehend von der Vorderseite der Endlosfolie her betrachtet eine ein Sicherheitsmerkmal aufweisende Funktionsschicht mit der Länge F und eine oberhalb der Funktionsschicht angeordnete Schicht aus Heißsiegelkleber mit der Länge H aufweist, wobei die Längen F und H jeweils auf die Längsrichtung der streifenförmigen Endlosfolie bezogen sind und die Beziehung F < H erfüllen, und wobei zwischen der Endlosfolie und der Vielzahl von Sicherheitselementen eine diskontinuierliche Trennschicht mit separaten Trennschicht-Bereichen angeordnet ist, sodass an jedem seiner beiden senkrecht zur Längsrichtung der streifenförmigen Endlosfolie verlaufenden Enden eines Sicherheitselements ein Trennschicht-Bereich angrenzt und genau ein Trennschicht-Bereich zwischen zwei (benachbarten) Sicherheitselementen angeordnet ist, wobei der Trennschicht-Bereich die Funktionsschicht der angrenzenden/benachbarten Sicherheitselemente überlappt.10. (further aspect) strip-shaped endless film having a front side and a rear side, the front side having a multiplicity of security elements, which are arranged spaced apart in the longitudinal direction of the strip-shaped endless foil and are each designed as a removable from the endless foil transfer element for application to a security paper or a valuable item and each security element, starting from the front of the endless film forth considered a security feature having functional layer with the length F and a layer of hot-melt adhesive having the length H arranged above the functional layer, wherein the lengths F and H are each related to the longitudinal direction of the strip-shaped endless film and satisfy the relationship F <H, and wherein between the endless film and the plurality of security elements a discontinuous separation layer is arranged with separate separation layer areas, so that at each of its two perpendicular to the longitudinal direction of the strip-shaped endless film extending ends of a security element adjacent to a separating layer area and exactly one separating layer region is arranged between two (adjacent) security elements, wherein the separating layer region overlaps the functional layer of the adjacent / adjacent security elements.
  11. 11. (Bevorzugte Ausgestaltung) Streifenförmige Endlosfolie nach Absatz 10, wobei die Schicht aus Heißsiegelkleber den Trennschicht-Bereich überlappt.11. (Preferred Embodiment) Strip-shaped continuous film according to paragraph 10, wherein the layer of heat-sealable adhesive overlaps the release layer area.
  12. 12. (Bevorzugte Ausgestaltung) Streifenförmige Endlosfolie nach Absatz 10 oder 11, wobei die ein Sicherheitsmerkmal aufweisende Funktionsschicht ausgehend von der Vorderseite der Endlosfolie her betrachtet eine Prägelackschicht mit der Länge L ist, die eine flächige Beugungsstruktur aufweist, und eine oberhalb der Prägelackschicht angeordnete Primerschicht mit der Länge P aufweist, wobei die Längen L und P jeweils auf die Längsrichtung der streifenförmigen Endlosfolie bezogen sind und die Beziehung L < P < H erfüllen und die Primerschicht den Trennschicht-Bereich überlappt und die Primerschicht zumindest teilweise U-förmig von der Schicht aus Heißsiegelkleber umgeben ist.12. (Preferred embodiment) Strip-shaped endless film according to paragraph 10 or 11, wherein the functional feature having a functional feature layer viewed from the front side of the endless film is an embossing lacquer layer with the length L, which has a planar diffraction structure, and a primer layer arranged above the embossing lacquer layer the length L and P are respectively related to the longitudinal direction of the strip-shaped endless film and satisfy the relationship L <P <H and the primer layer overlaps the release layer region and the primer layer at least partially U-shaped from the layer of heat seal adhesive is surrounded.
  13. 13. (Bevorzugte Ausgestaltung) Streifenförmige Endlosfolie nach Absatz 10 oder 11, wobei die streifenförmige Endlosfolie eine weitere Funktionsschicht aufweist, die zwischen der Funktionsschicht und der Schicht aus Heißsiegelkleber angeordnet ist, und die weitere Funktionsschicht in Längsrichtung der streifenförmigen Endlosfolie die Länge WF aufweist und die Beziehung F < WF < H erfüllt ist.13. (Preferred embodiment) Strip-shaped endless foil according to paragraph 10 or 11, wherein the strip-shaped endless foil has a further functional layer, which is arranged between the functional layer and the layer of hot-seal adhesive, and the further functional layer in the longitudinal direction of the strip-shaped endless foil has the length WF and Relationship F <WF <H is satisfied.
  14. 14. (Bevorzugte Ausgestaltung) Streifenförmige Endlosfolie nach Absatz 12, wobei die streifenförmige Endlosfolie eine weitere Funktionsschicht aufweist, die zwischen der Prägelackschicht und der Primerschicht angeordnet ist, und die weitere Funktionsschicht in Längsrichtung der streifenförmigen Endlosfolie die Länge WP aufweist und die Beziehung L < WP < P erfüllt ist.14. (Preferred Embodiment) Strip-shaped endless foil according to paragraph 12, wherein the strip-shaped endless foil has a further functional layer which is arranged between the embossing lacquer layer and the primer layer, and the further functional layer in the longitudinal direction of the strip-shaped endless foil has the length WP and the relationship L <WP <P is satisfied.
  15. 15. (weiterer Aspekt) Verwendung der streifenförmigen Endlosfolie nach einem der Absätze 1 bis 14 zur Absicherung eines Sicherheitspapiers oder eines Wertgegenstandes.15. (further aspect) Use of the strip-shaped endless foil according to one of paragraphs 1 to 14 for securing a security paper or a valuable item.
Ausführliche Beschreibung der ErfindungDetailed description of the invention

Die Erfindung wird nachstehend anhand von Ausführungsbeispielen (Figuren 2b, 2c, 2d, 2e, 3 und 4) beschrieben. Figur 1 und Figur 2a beziehen sich auf ein Vergleichsbeispiel. Der besseren Anschaulichkeit halber wird in den Figuren auf eine maßstabs- und proportionsgetreue Darstellung verzichtet.The invention will be described below on the basis of exemplary embodiments ( FIGS. 2b, 2c, 2d . 2e . 3 and 4 ). FIG. 1 and FIG. 2a refer to a comparative example. For the sake of better clarity, a representation true to scale and proportion is dispensed with in the figures.

Es zeigen:

Fig. 1
eine schematische Darstellung eines Papierbogens, auf dem Transferfolienstreifen gemäß dem Stand der Technik appliziert worden sind;
Fig. 2a
eine schematische Darstellung des Schichtaufbaus einer Transferfolie gemäß dem Stand der Technik;
Fig. 2b
eine schematische Darstellung des Schichtaufbaus einer Transferfolie gemäß einem ersten Ausführungsbeispiel der Erfindung;
Fig. 2c
eine schematische Darstellung des Schichtaufbaus einer Transferfolie gemäß einem zweiten Ausführungsbeispiel der Erfindung;
Fig. 2d
eine schematische Darstellung des Schichtaufbaus einer Transferfolie gemäß einem dritten Ausführungsbeispiel der Erfindung;
Fig. 2e
eine schematische Darstellung des Schichtaufbaus einer Transferfolie gemäß einem vierten Ausführungsbeispiel der Erfindung;
Fig. 2f
eine schematische Darstellung des Schichtaufbaus einer Transferfolie gemäß einem fünften Ausführungsbeispiel der Erfindung;
Fig. 2g
eine schematische Darstellung des Schichtaufbaus einer Transferfolie gemäß einem sechsten Ausführungsbeispiel der Erfindung;
Fig. 3
eine schematische Darstellung eines Papierbogens, auf dem erfindungsgemäße Transferfolienstreifen gemäß dem ersten Ausführungsbeispiel appliziert worden sind;
Fig. 4
einen Ausschnitt aus der Transferfolie gemäß dem ersten Ausführungsbeispiel der Erfindung.
Show it:
Fig. 1
a schematic representation of a paper sheet have been applied to the transfer ribbon strip according to the prior art;
Fig. 2a
a schematic representation of the layer structure of a transfer film according to the prior art;
Fig. 2b
a schematic representation of the layer structure of a transfer film according to a first embodiment of the invention;
Fig. 2c
a schematic representation of the layer structure of a transfer film according to a second embodiment of the invention;
Fig. 2d
a schematic representation of the layer structure of a transfer film according to a third embodiment of the invention;
Fig. 2e
a schematic representation of the layer structure of a transfer film according to a fourth embodiment of the invention;
Fig. 2f
a schematic representation of the layer structure of a transfer film according to a fifth embodiment of the invention;
Fig. 2g
a schematic representation of the layer structure of a transfer film according to a sixth embodiment of the invention;
Fig. 3
a schematic representation of a paper sheet, have been applied to the inventive transfer film strip according to the first embodiment;
Fig. 4
a section of the transfer film according to the first embodiment of the invention.

Figur 1 zeigt eine schematische Darstellung eines Papierbogens 1, auf dem vier Transferfolienstreifen 2 gemäß dem Stand der Technik appliziert worden sind. Der in der Figur gezeigte Papierbogen 1 kann in nachfolgenden Schritten z.B. mittels Sieb-, Flexo- und Stichtiefdruckverfahren bedruckt und schließlich zu einer Vielzahl von Wertdokumenten, insbesondere Banknoten, geschnitten werden. Die applizierten Transferfolienstreifen 2 stammen von einer streifenförmigen Endlosfolie. Das Applizieren der Transferfolienstreifen 2 erfolgte dadurch, dass definierte Abschnitte der streifenförmigen Endlosfolie mit einer beheizten Walze in Kontakt kamen und auf diese Weise erwärmt wurden. Die Erwärmung führte zu einem Erweichen des auf der Oberfläche der definierten Folienstreifen-Abschnitte vorhandenen Heißsiegellacks. Die Folienstreifen-Abschnitte wurden danach mittels des geschmolzenen Heißsiegellacks mit dem Papierbogen 1 verklebt. FIG. 1 shows a schematic representation of a paper sheet 1, on which four transfer film strips 2 have been applied according to the prior art. The paper sheet 1 shown in the figure can be printed in subsequent steps, for example by means of screen, flexo and intaglio printing methods, and finally cut into a multiplicity of value documents, in particular banknotes. The applied transfer film strips 2 originate from a strip-shaped endless foil. The application of the transfer film strips 2 was carried out by having defined sections the strip-shaped endless film with a heated roller in contact and were heated in this way. The heating resulted in softening of the heat sealing lacquer present on the surface of the defined film strip sections. The film strip sections were then bonded to the paper sheet 1 by means of the molten heat-sealing lacquer.

Der in der Figur 1 gezeigte Transferfolienstreifen 2 enthält in seinem Schichtaufbau unter anderem eine durchgängige bzw. kontinuierliche UV-Prägelackschicht. Der UV-Lack neigt infolge seiner Sprödigkeit zur Flitter-Bildung. Wie aus der links vom Papierbogen 1 gezeigten Vergrößerung des Ausschnitts "A" hervorgeht, kommt es zu unsauberen Bruchkanten und Ausbruchstücken bzw. Flittern 3. Die Flitter 3 entstehen beim Brechen des UV-Lacks und beeinträchtigen die Bedruckbarkeit des Papierbogens 1 im nachfolgenden Druckprozess.The Indian FIG. 1 shown transfer film strip 2 contains in its layer structure, inter alia, a continuous or continuous UV embossing lacquer layer. Due to its brittleness, the UV varnish tends to form baubles. As can be seen from the enlargement of the detail "A" shown to the left of the paper sheet 1, unclean break edges and breakouts or flakes 3 occur. The baubles 3 are formed when the UV coating breaks and impair the printability of the paper sheet 1 in the subsequent printing process.

Figur 2a zeigt eine schematische Darstellung des Schichtaufbaus einer streifenförmigen Endlosfolie 4 gemäß dem Stand der Technik, die in dem in der Figur 1 gezeigten Vergleichsbeispiel verwendet wurde. Die Endlosfolie 4 enthält eine Trägerfolie 5, im vorliegenden Fall eine PET-Folie. Oberhalb der Trägerfolie 5 befinden sich der Reihe nach eine UV-Prägelackschicht 6, eine Primerschicht 7 und eine Heißsiegellackschicht 8. Bezeichnend für den Schichtaufbau der streifenförmigen Endlosfolie 4 gemäß dem Stand der Technik ist, dass jede der UV-Lackschicht, Primerschicht und Heißsiegellackschicht in Form einer durchgängigen bzw. kontinuierlichen Schicht vorliegt. An dem mit dem Begriff "Kalt" beschriebenen Abschnitt der Endlosfolie 4 findet keine Verbindung des Klebstoffs 8 mit dem Papier statt, sodass innerhalb dieses Abschnitts die Schichten 6, 7 und 8 auf der Trägerfolie 5 verbleiben. An den mit dem Begriff "Hitze" beschriebenen Abschnitten der Endlosfolie 4 hingegen findet eine Verbindung des Klebstoffs 8 mit dem Papier statt, sodass innerhalb dieser Abschnitte die Schichten 6, 7 und 8 auf das Papier appliziert werden und später von der als Transferfolie dienenden Trägerfolie 5 abgelöst werden. FIG. 2a shows a schematic representation of the layer structure of a strip-shaped endless foil 4 according to the prior art, which in the in the FIG. 1 Comparative example shown was used. The endless foil 4 contains a carrier foil 5, in the present case a PET foil. Above the carrier foil 5 are in succession a UV embossing lacquer layer 6, a primer layer 7 and a heat seal lacquer layer 8. It is characteristic of the layer structure of the strip-shaped endless foil 4 according to the prior art that each of the UV lacquer layer, primer layer and heat seal lacquer layer is in the form of a continuous or continuous layer is present. At the section of the endless foil 4 described by the term "cold", no bonding of the adhesive 8 with the paper takes place, so that the layers 6, 7 and 8 remain on the carrier foil 5 within this section. On the other hand, at the sections of the endless foil 4 described with the term "heat", the layers 8, 8 and 8 are joined to the paper, so that the layers 6, 7 and 8 are applied to the paper within these sections and later from the carrier foil 5 serving as transfer foil be replaced.

Die beiden in den Figuren 2a bis 2e gezeigten, senkrechten Geraden 14 veranschaulichen die vorgegebenen Bruchkanten innerhalb des auf der Trägerfolie 5 vorhandenen Sicherheitselement-Schichtaufbaus. An den Stellen der Bruchkanten muss unter anderem der UV-Lack 6 gebrochen werden, was die in der Figur 1 gezeigten Flitter 3 zur Folge hat.The two in the FIGS. 2a to 2e The vertical straight lines 14 illustrated illustrate the predetermined breaking edges within the security element layer structure present on the carrier foil 5. Among other things, the UV lacquer 6 must be broken at the points of the break edges, which is what the in the FIG. 1 shown flitter 3 result.

Figur 2b zeigt eine schematische Darstellung des Schichtaufbaus einer streifenförmigen Endlosfolie 9 gemäß einem ersten Ausführungsbeispiel der Erfindung. In der Endlosfolie 9 ist die UV-Prägelackschicht 6, die Primerschicht 7 und die Heißsiegellackschicht 8 jeweils ausgespart. Durch das Aussparen des UV-Lacks 6 wird ein Brechen des UV-Lacks und somit die Flitterbildung verhindert. Die Herstellung der Endlosfolie 9 erfolgt durch Bereitstellen der Trägerfolie 5 (z.B. eine PET-Folie) und Bedrucken der Trägerfolie 5 mit einer UV-Lackschicht 6, die Aussparungen aufweist. Anschließend werden sukzessive eine Primerschicht 7 und eine Heißsiegellackschicht 8 aufgedruckt, die jeweils Aussparungen aufweisen. Die Primerschicht 7 hat größere Abmessungen als der UV-Lack 6. Die Heißsiegellackschicht 8 wiederum hat größere Abmessungen als die Primerschicht 7. FIG. 2b shows a schematic representation of the layer structure of a strip-shaped endless foil 9 according to a first embodiment of the invention. In the endless film 9, the UV embossing lacquer layer 6, the primer layer 7 and the heat sealing lacquer layer 8 are each recessed. By eliminating the UV varnish 6 a breakage of the UV varnish and thus the tinsel formation is prevented. The endless film 9 is produced by providing the carrier film 5 (for example a PET film) and printing the carrier film 5 with a UV lacquer layer 6 which has recesses. Subsequently, a primer layer 7 and a heat sealing lacquer layer 8 are printed successively, each having recesses. The primer layer 7 has larger dimensions than the UV lacquer 6. The heat seal lacquer layer 8 in turn has larger dimensions than the primer layer 7.

Figur 2c zeigt eine schematische Darstellung des Schichtaufbaus einer streifenförmigen Endlosfolie 10 gemäß einem zweiten Ausführungsbeispiel der Erfindung. Die Endlosfolie 10 weist eine durchgängige bzw. kontinuierliche Trennschicht bzw. Releaseschicht 11 auf, die das Ablösen des die Schichten 6, 7 und 8 aufweisenden Sicherheitselement-Schichtaufbaus von der Trägerfolie 5 erleichtert. Die Herstellung der Endlosfolie 10 erfolgt durch Bereitstellen der Trägerfolie 5 und vollflächiges Bedrucken der Trägerfolie 5 mit einer Releaseschicht 11. Danach folgt das Bedrucken der Releaseschicht 11 mit einer UV-Lackschicht 6, die Aussparungen aufweist. Anschließend werden sukzessive eine Primerschicht 7 und eine Heißsiegellackschicht 8 aufgedruckt, die jeweils Aussparungen aufweisen. Die Primerschicht 7 hat größere Abmessungen als der UV-Lack 6. Die Heißsiegellackschicht 8 wiederum hat größere Abmessungen als die Primerschicht 7. Die Releaseschicht 11 verhindert eine Verbindung der Primerschicht 7 und der Heißsiegellackschicht 8 mit der Trägerfolie 5. Auf diese Weise kommt es nach dem Verkleben mit dem Papier, d.h. nach dem Heißsiegelvorgang, nicht zu einem Reißen des Papiers, weil der Primer 7 keinen direkten Kontakt zur Folie 5 besitzt. Verglichen mit den Abmessungen des UV-Lacks 6 weisen der Primer 7 und der Heißsiegellack 8 jeweils größere Abmessungen auf. Dieses "längenmäßige Überstehen" des Primers 7 bzw. des Heißsiegellacks 8 gegenüber dem UV-Lack 6 befindet sich zweckmäßigerweise in einem Bereich, in dem es maschinenbedingt noch zu einem Verkleben mit dem Papier, d.h. zu einem Heißsiegeln, kommt. Figure 2c shows a schematic representation of the layer structure of a strip-shaped endless foil 10 according to a second embodiment of the invention. The endless film 10 has a continuous or continuous release layer or release layer 11, which facilitates the detachment of the security element layer structure comprising the layers 6, 7 and 8 from the carrier film 5. The endless film 10 is produced by providing the carrier film 5 and printing the carrier film 5 over the entire surface with a release layer 11. This is followed by printing the release layer 11 with a UV lacquer layer 6 which has recesses. Subsequently, a primer layer 7 and a heat sealing lacquer layer 8 are printed successively, each having recesses. The primer layer 7 has larger dimensions than the UV lacquer 6. The heat sealing lacquer layer 8 in turn has larger dimensions than the primer layer 7. The release layer 11 prevents a connection of the primer layer 7 and the heat sealing lacquer layer 8 with the carrier foil 5. This occurs after the gluing with the paper , ie, after the heat-sealing operation, not to a tearing of the paper, because the primer 7 has no direct contact with the film 5. Compared with the dimensions of the UV varnish 6, the primer 7 and the heat sealing varnish 8 each have larger dimensions. This "lengthwise protruding" of the primer 7 or of the heat-sealing lacquer 8 with respect to the UV lacquer 6 is expediently in a region in which, due to the machine, gluing to the paper, ie to heat-sealing, occurs.

Figur 2d zeigt eine schematische Darstellung des Schichtaufbaus einer streifenförmigen Endlosfolie 12 gemäß einem dritten Ausführungsbeispiel der Erfindung. Verglichen mit dem in der Figur 2c gezeigten Ausführungsbeispiel ist die Trennschicht bzw. Releaseschicht 13 nicht durchgängig bzw. kontinuierlich, sondern diskontinuierlich gebildet. In manchen Fällen muss lediglich ein gutes anfängliches Ablösen (d.h. ein guter "Anfangsrelease") des den UV-Lack 6, den Primer 7 und den Heißsiegellack 8 aufweisenden Sicherheitselement-Schichtaufbaus von der Trägerfolie 5 gewährleistet sein und ein Verkleben des Primers 7 mit der Trägerfolie 5 verhindert werden. In diesen Fällen reicht es aus, die Releaseschicht 13 entsprechend der Figur 2d nur in einem kleinen Bereich aufzubringen. In der Figur 2d sind die separaten Trennschicht-Bereiche 13 so angeordnet, dass jedes Sicherheitselement an jedem seiner beiden senkrecht zur Längsrichtung der streifenförmigen Endlosfolie verlaufenden Enden genau einen Trennschicht-Bereich aufweist. In dem in Figur 2d gezeigten Beispiel weist die zwischen zwei benachbarten Sicherheitselementen angeordnete Trennschicht eine Aussparung auf. Figure 2d shows a schematic representation of the layer structure of a strip-shaped endless foil 12 according to a third embodiment of the invention. Compared with that in the Figure 2c the embodiment shown, the release layer or release layer 13 is not continuous or continuous, but formed discontinuously. In some cases, only a good initial peel (ie, a good "initial release") of the UV lacquer 6, primer 7, and heat sealing lacquer 8 having the security element layer build-up from the carrier foil 5 and gluing of the primer 7 to the carrier foil must be ensured 5 are prevented. In these cases it is sufficient, the release layer 13 according to the Figure 2d only apply in a small area. In the Figure 2d the separate separation layer regions 13 are arranged so that each security element has exactly one interface region at each of its two ends extending perpendicular to the longitudinal direction of the strip-shaped endless film. In the in Figure 2d As shown, the separating layer arranged between two adjacent security elements has a recess.

Figur 2e zeigt eine schematische Darstellung des Schichtaufbaus einer streifenförmigen Endlosfolie 12 gemäß einem vierten Ausführungsbeispiel der Erfindung. Das vierte Ausführungsbeispiel ist eine Abwandlung des dritten Ausführungsbeispiels. Auch in diesem Beispiel ist die Trennschicht bzw. Releaseschicht 13 nicht durchgängig bzw. kontinuierlich, sondern diskontinuierlich gebildet. Die separaten Trennschicht-Bereiche 13 sind so angeordnet, dass jedes Sicherheitselement an jedem seiner beiden senkrecht zur Längsrichtung der streifenförmigen Endlosfolie verlaufenden Enden genau einen Trennschicht-Bereich aufweist. Anders als in dem in Figur 2d gezeigten Beispiel weist die zwischen zwei benachbarten Sicherheitselementen angeordnete Trennschicht keine Aussparung auf, d.h. die zwischen zwei benachbarten Sicherheitselementen angeordnete Trennschicht ist kontinuierlich gebildet. Die im Vergleich zum dritten Ausführungsbeispiel vergrößerte Abmessung der Trennschicht ist vorteilhaft, weil sich die Trennschicht drucktechnisch leichter mittels Drucken auf die Folie herstellen lässt. FIG. 2e shows a schematic representation of the layer structure of a strip-shaped endless foil 12 according to a fourth embodiment of the invention. The fourth embodiment is a modification of the third embodiment. Also in this example, the release layer or release layer 13 is not continuous or continuous, but formed discontinuously. The separate separating layer regions 13 are arranged such that each security element has exactly one separating layer region at each of its two ends extending perpendicular to the longitudinal direction of the strip-shaped endless foil. Unlike in the Figure 2d As shown, the separating layer arranged between two adjacent security elements has no recess, ie the separating layer arranged between two adjacent security elements is formed continuously. The dimension of the separating layer, which is increased in comparison to the third exemplary embodiment, is advantageous because the separating layer can be produced more easily by printing on the film by printing technology.

Figur 2f zeigt eine schematische Darstellung des Schichtaufbaus einer streifenförmigen Endlosfolie 12 gemäß einem fünften Ausführungsbeispiel der Erfindung. Das fünfte Ausführungsbeispiel ist eine Abwandlung des dritten Ausführungsbeispiels (Fig. 2d). Auch in diesem Beispiel ist eine Trennschicht bzw. Releaseschicht 17 nicht durchgängig bzw. kontinuierlich, sondern diskontinuierlich gebildet. Die separaten Trennschicht-Bereiche 17a, 17b der Trennschicht 17 sind so angeordnet, dass jedes Sicherheitselement 18 an jedem seiner beiden senkrecht zur Längsrichtung der streifenförmigen Endlosfolie verlaufenden Enden genau einen Trennschicht-Bereich 17a, 17b aufweist. Anders als in dem in Figur 2d gezeigten Beispiel weist die streifenförmige Endlosfolie 12 zwei (UV-) Lackschichten 6, 6a auf. FIG. 2f shows a schematic representation of the layer structure of a strip-shaped endless film 12 according to a fifth embodiment of the invention. The fifth embodiment is a modification of the third embodiment ( Fig. 2d ). Also in this example, a release layer or release layer 17 is not continuous or continuous, but formed discontinuously. The separate separating layer regions 17a, 17b of the separating layer 17 are arranged so that each security element 18 has exactly one separating layer region 17a, 17b at each of its two ends extending perpendicular to the longitudinal direction of the strip-shaped endless foil. Unlike in the Figure 2d As shown, the strip-shaped endless foil 12 has two (UV) lacquer layers 6, 6a.

Die Herstellung der Endlosfolie 12 erfolgt durch Bereitstellen der Trägerfolie 5 und Aufbringen z.B. Bedrucken der Trägerfolie 5 mit einer diskontinuierlichen Trennschicht bzw. Releaseschicht 17. Danach folgt das Aufbringen einer UV-Lackschicht 6, die Aussparungen aufweist. Der Anfang jeder Aussparung der UV-Lackschicht 6 liegt im Bereich der Releaseschicht 17. Anschließend wird eine weitere UV-Lackschicht 6a aufgebracht, die ebenfalls Aussparungen aufweist. Die Aussparung der weiteren UV-Lackschicht 6a sind größer als die Aussparungen der UV-Lackschicht 6, so dass die (weitere) UV-Lackschicht 6a die UV-Lackschicht 6 nicht einhüllt. Im Weiteren werden sukzessive eine Primerschicht 7 und eine Heißsiegellackschicht 8 aufgedruckt, die jeweils Aussparungen aufweisen. Die Primerschicht 7 hat größere Abmessungen als die UV-Lackschichten 6 und 6a. Die Heißsiegellackschicht 8 wiederum hat größere Abmessungen als die Primerschicht 7. Die diskontinuierliche Releaseschicht 17 verhindert eine Verbindung der Primerschicht 7 und der Heißsiegellackschicht 8 mit der Trägerfolie 5. Auf diese Weise kommt es nach dem Verkleben mit dem Papier, d.h. nach dem Heißsiegelvorgang, nicht zu einem Reißen des Papiers, weil der Primer 7 keinen direkten Kontakt zur Folie 5 besitzt. Verglichen mit den Abmessungen der UV-Lacke bzw. UV-Lackschichten 6, 6a weisen der Primer 7 und der Heißsiegellack 8 jeweils größere Abmessungen auf. Dieses "längenmäßige Überstehen" des Primers 7 bzw. des Heißsiegellacks 8 gegenüber der (UV-) Lacke 6, 6a befindet sich zweckmäßigerweise in einem Bereich, in dem es maschinenbedingt noch zu einem Verkleben mit dem Papier, d.h. zu einem Heißsiegeln, kommt.The endless film 12 is produced by providing the carrier film 5 and applying, for example, printing on the carrier film 5 with a discontinuous separating layer or release layer 17. This is followed by the application of a UV coating layer 6 which has recesses. The beginning of each recess of the UV lacquer layer 6 is in the region of the release layer 17. Subsequently, a further UV lacquer layer 6a applied, which also has recesses. The recess of the further UV lacquer layer 6a are larger than the recesses of the UV lacquer layer 6, so that the (further) UV lacquer layer 6a does not envelop the UV lacquer layer 6. Furthermore, a primer layer 7 and a heat sealing lacquer layer 8 are printed successively, each having recesses. The primer layer 7 has larger dimensions than the UV lacquer layers 6 and 6a. The heat sealing lacquer layer 8, in turn, has larger dimensions than the primer layer 7. The discontinuous release layer 17 prevents the primer layer 7 and the heat sealing lacquer layer 8 from bonding to the carrier foil 5. In this way, adhesion to the paper, ie after the heat sealing process, does not occur a tearing of the paper, because the primer 7 has no direct contact with the film 5. Compared with the dimensions of the UV lacquers or UV lacquer layers 6, 6a, the primer 7 and the heat sealing lacquer 8 each have larger dimensions. This "lengthwise protruding" of the primer 7 or of the heat sealing lacquer 8 relative to the (UV) lacquers 6, 6a is expediently located in a region in which, due to the machine, bonding with the paper, ie heat sealing, occurs.

Figur 2g zeigt eine schematische Darstellung des Schichtaufbaus einer streifenförmigen Endlosfolie 12 gemäß einem sechsten Ausführungsbeispiel der Erfindung. Das sechste Ausführungsbeispiel ist eine Abwandlung des vierten Ausführungsbeispiels (Fig. 2e). Auch in diesem Beispiel ist eine Trennschicht bzw. Releaseschicht nicht durchgängig bzw. kontinuierlich, sondern diskontinuierlich gebildet. Die separaten Trennschicht-Bereiche 19 sind so angeordnet, dass jedes Sicherheitselement 18 an jedem seiner beiden senkrecht zur Längsrichtung der streifenförmigen Endlosfolie 12 verlaufenden Enden genau einen Trennschicht-Bereich 19 aufweist. Anders als in dem in Figur 2e gezeigten Beispiel weist die streifenförmige Endlosfolie 12 eine (diskontinuierliche) Releaseschicht 19 auf, die die Aussparungen der UV-Lackschicht 6 (aus-)füllen. Die (diskontinuierliche) Releaseschicht 19 weist eine Schichtdicke auf die größer ist als die Schichtdicke der UV-Lackschicht 6. In anderen Worten hüllt die (diskontinuierliche) Releaseschicht 19 die Kanten-/ Randbereiche der UV-Lackschicht 6 ein. Somit überlappt die (diskontinuierliche) Releaseschicht bzw. der jeweilige Trennschicht-Bereich 19 die Enden der UV-Lackschicht 6. Figure 2g shows a schematic representation of the layer structure of a strip-shaped endless foil 12 according to a sixth embodiment of the invention. The sixth embodiment is a modification of the fourth embodiment ( Fig. 2e ). Also in this example, a release layer or release layer is not continuous or continuous, but formed discontinuously. The separate separating layer regions 19 are arranged such that each security element 18 has exactly one separating layer region 19 at each of its two ends extending perpendicularly to the longitudinal direction of the strip-shaped endless foil 12. Unlike in the FIG. 2e As shown, the strip-shaped endless foil 12 has a (discontinuous) release layer 19, which fill the recesses of the UV lacquer layer 6 (off). The (discontinuous) release layer 19 has a layer thickness which is greater than the layer thickness of the UV lacquer layer 6. In other words, the (discontinuous) release layer 19 wraps around the edge regions the UV lacquer layer 6 a. Thus, the (discontinuous) release layer or the respective separating layer region 19 overlaps the ends of the UV lacquer layer 6.

Die Herstellung der Endlosfolie 12 erfolgt durch Bereitstellen der Trägerfolie 5 und Aufbringen z.B. Bedrucken der Trägerfolie 5 mit einer UV-Lackschicht 6, die Aussparungen aufweist. Danach folgt das Aufbringen einer (diskontinuierlichen) Releaseschicht, die die Aussparungen des UV-Lacks/ der UV-Lackschicht 6 auffüllt und die UV-Lackschicht 6 überlappt. Im Weiteren werden sukzessive eine Primerschicht 7 und eine Heißsiegellackschicht 8 aufgedruckt, die jeweils Aussparungen aufweisen. Die Primerschicht 7 kann größere Abmessungen als die UV-Lackschicht 6 haben. In anderen Worten kann die Primerschicht 7 über die UV-Lackschicht hinausragen/überstehen, d.h. in den Bereich der Aussparung der UV-Lackschicht 6 hineinragen. Weiterhin überlappt die Primerschicht 7 die Releaseschicht bzw. den jeweiligen Trennschicht-Bereiche 19. Die Heißsiegellackschicht 8 wiederum hat größere Abmessungen als die Primerschicht 7 und überlappt somit die Primerschicht 7. Verglichen mit den Abmessungen des UV-Lacks bzw. UV-Lackschicht 6 weisen der Primer 7 und der Heißsiegellack 8 jeweils größere Abmessungen auf. Dieses "längenmäßige Überstehen" des Primers 7 bzw. des Heißsiegellacks 8 gegenüber des UV-Lacks 6 befindet sich zweckmäßigerweise in einem Bereich, in dem es maschinenbedingt noch zu einem Verkleben mit dem Papier, d.h. zu einem Heißsiegeln, kommt.The production of the endless film 12 is carried out by providing the carrier film 5 and applying e.g. Printing the carrier film 5 with a UV lacquer layer 6 having recesses. This is followed by the application of a (discontinuous) release layer which fills the recesses of the UV varnish / UV varnish layer 6 and overlaps the UV varnish layer 6. Furthermore, a primer layer 7 and a heat sealing lacquer layer 8 are printed successively, each having recesses. The primer layer 7 may have larger dimensions than the UV lacquer layer 6. In other words, the primer layer 7 may protrude beyond the UV lacquer layer, i. protrude into the region of the recess of the UV lacquer layer 6. Furthermore, the primer layer 7 overlaps the release layer or the respective separating layer regions 19. The heat sealing lacquer layer 8, in turn, has larger dimensions than the primer layer 7 and thus overlaps the primer layer 7. Compared with the dimensions of the UV lacquer or UV lacquer layer 6, FIG Primer 7 and the heat sealing lacquer 8 each have larger dimensions. This "lengthy protrusion" of the primer 7 or of the heat-sealing lacquer 8 with respect to the UV lacquer 6 is expediently in a region in which, due to the machine, it still sticks to the paper, i. to a heat seal, comes.

Figur 3 zeigt eine schematische Darstellung eines Papierbogens 15, auf dem vier Transferfolienstreifen 16 gemäß dem obigen, in Verbindung mit Figur 2b beschriebenen ersten Ausführungsbeispiel appliziert worden sind. Die applizierten Transferfolienstreifen 16 stammen von einer streifenförmigen Endlosfolie. Die Endlosfolie ist aus Wiederholungseinheiten zusammengesetzt, die jeweils den in der Figur 4 gezeigten Aufbau aufweisen. FIG. 3 shows a schematic representation of a paper sheet 15, on the four transfer film strip 16 according to the above, in conjunction with FIG. 2b described first embodiment have been applied. The applied transfer film strips 16 originate from a strip-shaped endless film. The endless film is composed of repeating units, each in the FIG. 4 have shown construction.

Wie die Figur 4 zeigt, enthält die Trägerfolie 5 in jeder Wiederholungseinheit eine ein Sicherheitsmerkmal aufweisende Funktionsschicht, im vorliegenden Fall eine UV-Prägelackschicht 6, die eine flächige Beugungsstruktur aufweist. Oberhalb der Prägelackschicht 6 ist eine Primerschicht 7 angeordnet. Die UV-Prägelackschicht 6 und die Primerschicht 7 sind so beschaffen, dass die UV-Prägelackschicht 6 U-förmig von der Primerschicht 7 umgeben ist. Die Primerschicht 7 wiederum ist U-förmig von der Schicht aus Heißsiegelkleber 8 umgeben.As the FIG. 4 shows, the carrier film 5 contains in each repeat unit a functional feature having a functional feature layer, in the present case a UV embossing lacquer layer 6, which has a planar diffraction structure. Above the embossing lacquer layer 6, a primer layer 7 is arranged. The UV embossing lacquer layer 6 and the primer layer 7 are such that the UV embossing lacquer layer 6 is surrounded in a U-shape by the primer layer 7. The primer layer 7 in turn is surrounded in a U-shape by the layer of hot-seal adhesive 8.

Insbesondere können die (UV-) Lackschicht bzw. Prägelackschicht bzw. der UV-Lack (wie 6 und 6a) aus mehreren Schichten aufgebaut sein. Insbesondere können die Lackschichten 6 und 6a aus den gleichen oder verschiedenen Stoffen hergestellt sein.In particular, the (UV) lacquer layer or embossing lacquer layer or the UV lacquer (such as 6 and 6a) can be composed of several layers. In particular, the paint layers 6 and 6a may be made of the same or different materials.

Die Formulierung "U-förmiges Umgeben einer Schicht" ist in der vorliegenden Beschreibung so zu verstehen, dass die betreffende Schicht an drei Seiten in Form eines Rechtecks von einer weiteren Schicht umgeben wird. Das Rechteck kann, muss aber nicht notwendigerweise, eine regelmäßige Geometrie aufweisen, d.h. über orthogonale Innenwinkel verfügen. Es kann ebenso ein Rechteck-ähnlicher Schichtaufbau vorliegen, der z.B. die Form eines Trapezes, insbesondere die Form eines gleichschenkligen Trapezes, annimmt.The term "U-shaped surrounding of a layer" is to be understood in the present description as meaning that the relevant layer is surrounded on three sides in the form of a rectangle by a further layer. The rectangle may or may not necessarily have a regular geometry, i. have orthogonal interior angles. There may also be a rectangle-like layered structure, e.g. the shape of a trapezoid, in particular the shape of an isosceles trapezoid, assumes.

Die vorteilhafte Wirkung der vorliegenden Erfindung wurde in den vorangehenden Ausführungsbeispielen im Zusammenhang mit der zur Flitterbildung neigenden UV-Prägelackschicht beschrieben. Die Erfindung ist aber nicht auf Transferelemente mit einer UV-Prägelackschicht beschränkt, sondern eignet sich für sämtliche Transferelemente, die eine zur Flitterbildung neigende, ein Sicherheitsmerkmal aufweisende Funktionsschicht beinhalten.The advantageous effect of the present invention has been described in the preceding embodiments in the context of the tinsel-forming UV embossing lacquer layer. However, the invention is not limited to transfer elements with a UV embossing lacquer layer, but is suitable for all transfer elements which include a tiling-prone functional layer having a security feature.

Claims (15)

  1. A strip-shaped continuous foil (9, 10, 12) with a front side and a back side, wherein the front side has a multiplicity of security elements which are arranged mutually spaced apart in the longitudinal direction of the strip-shaped continuous foil (9, 10, 12) and are each configured as a transfer element detachable from the continuous foil (9, 10, 12) for application to a security paper or an object of value and, viewed from the front side of the continuous foil (9, 10, 12), each security element has a functional layer (6) with the length F having a security feature, and a layer of heat-seal adhesive (8) with the length H arranged above the functional layer (6), wherein the lengths F and H each refer to the longitudinal direction of the strip-shaped continuous foil (9, 10, 12), characterized in that the lengths fulfill the relationship F < H and the functional layer (6) having a security feature and the layer of heat-seal adhesive (8) are constituted such that the functional layer (6) is surrounded in a U-shape by the layer of heat-seal adhesive (8).
  2. The strip-shaped continuous foil (9, 10, 12) according to claim 1, wherein, viewed from the front side of the continuous foil (9, 10, 12), the functional layer (6) having a security feature is an embossing lacquer layer (6) with the length L which has an areal diffractive structure, and a primer layer (7) with the length P arranged above the embossing lacquer layer (6), wherein the lengths L and P each refer to the longitudinal direction of the strip-shaped continuous foil (9, 10, 12) and fulfill the relationship L < P < H, and the embossing lacquer layer (6) and the primer layer (7) are constituted such that the embossing lacquer layer (6) is surrounded in a U-shape by the primer layer (7) and the primer layer (7) is surrounded in a U-shape by the layer of heat-seal adhesive (8).
  3. The strip-shaped continuous foil (10) according to claim 1 or 2, wherein a continuous separating layer (11) is arranged between the continuous foil (10) and the multiplicity of security elements.
  4. The strip-shaped continuous foil (12) according to claim 1 or 2, wherein a discontinuous separating layer (13, 17) with separate separating-layer regions (17a, 17b) is arranged between the continuous foil (12) and the multiplicity of security elements (18).
  5. The strip-shaped continuous foil (12) according to claim 1, wherein a discontinuous separating layer (13, 17) with separate separating-layer regions (17a, 17b) is arranged between the continuous foil (12) and the multiplicity of security elements (18), so that each security element has exactly one separating-layer region (17a, 17b) at each of its ends which both extend perpendicularly to the longitudinal direction of the strip-shaped continuous foil (12), wherein each separating-layer region (17a, 17b) forms respectively one common interface area with the functional layer (6) and the layer of heat-seal adhesive (7).
  6. The strip-shaped continuous foil (12) according to claim 5, wherein the strip-shaped continuous foil (12) has a further functional layer arranged between the functional layer and the layer of heat-seal adhesive (8), and the further functional layer has the length WF in the longitudinal direction of the strip-shaped continuous foil (12) and the relationship F < WF < H is fulfilled.
  7. The strip-shaped continuous foil (12) according to claim 2, wherein a discontinuous separating layer (13) with separate separating-layer regions (13) is arranged between the continuous foil (12) and the multiplicity of security elements, so that each security element has exactly one separating-layer region (13) at each of its ends which both extend perpendicularly to the longitudinal direction of the strip-shaped continuous foil (12), wherein each separating-layer region (13) forms respectively one common interface area with the embossing lacquer layer (6), the primer layer (7) and the layer of heat-seal adhesive (8).
  8. The strip-shaped continuous foil (12) according to claim 7, wherein the strip-shaped continuous foil (12) has a further functional layer arranged between the embossing lacquer layer (6) and the primer layer (7), and the further functional layer has the length WP in the longitudinal direction of the strip-shaped continuous foil (9, 12) and the relationship L < WP < P is fulfilled.
  9. The strip-shaped continuous foil (12) according to claim 1 or 2, wherein a discontinuous separating layer (13) with separate separating-layer regions (13) is arranged between the continuous foil (12) and the multiplicity of security elements, so that there is one separating-layer region (13) disposed adjacent to each of the ends of a security element which both extend perpendicularly to the longitudinal direction of the strip-shaped continuous foil (12), and exactly one separating-layer region (13) is arranged between two security elements.
  10. A strip-shaped continuous foil (12) with a front side and a back side, wherein the front side has a multiplicity of security elements (18) which are arranged mutually spaced apart in the longitudinal direction of the strip-shaped continuous foil (12) and are each configured as a transfer element detachable from the continuous foil (12) for application to a security paper or an object of value, and, viewed from the front side of the continuous foil (12), each security element (18) has a functional layer (6) with the length F having a security feature and a layer of heat-seal adhesive (8) with the length H arranged above the functional layer (6), wherein the lengths F and H each refer to the longitudinal direction of the strip-shaped continuous foil (12), characterized in that the lengths fulfill the relationship F < H, and wherein the continuous foil has a carrier foil (5) and a discontinuous separating layer (13, 19) with separate separating-layer regions (19) is arranged between the carrier foil (12) and the multiplicity of security elements, so that there is one separating-layer region (19) disposed adjacent to each of the ends of a security element (18) which both extend perpendicularly to the longitudinal direction of the strip-shaped continuous foil (12), and exactly one separating-layer region (19) is arranged between two security elements (18), wherein the separating-layer region (19) overlaps the functional layer (6) of the adjacent security elements (18).
  11. The strip-shaped continuous foil according to claim 10, wherein the layer of heat-seal adhesive (8) overlaps the separating layer region (19).
  12. The strip-shaped continuous foil according to claim 10 or 11, wherein, viewed from the front side of the continuous foil (12), the functional layer (6) having a security feature is an embossing lacquer layer with the length L having an areal diffractive structure, and has a primer layer (7) with the length P arranged above the embossing lacquer layer, wherein the lengths L and P each refer to the longitudinal direction of the strip-shaped continuous foil (12) and fulfill the relationship L < P < H, and the primer layer (7) overlaps the separating-layer region (19) and the primer layer (7) is surrounded at least partially in a U-shape by the layer of heat-seal adhesive (8).
  13. The strip-shaped continuous foil according to claim 10 or 11, wherein the strip-shaped continuous foil (12) has a further functional layer arranged between the functional layer (6) and the layer of heat-seal adhesive (8), and the further functional layer has the length WF in the longitudinal direction of the strip-shaped continuous foil and the relationship F < WF < H is fulfilled.
  14. The strip-shaped continuous foil according to claim 12, wherein the strip-shaped continuous foil has a further functional layer arranged between the embossing lacquer layer and the primer layer (7) and the further functional layer has the length WP in the longitudinal direction of the strip-shaped continuous foil and the relationship L < WP < P is fulfilled.
  15. Use of the strip-shaped continuous foil according to any of the claims 1 to 14 for securing a security paper or an object of value.
EP14003115.4A 2013-09-16 2014-09-09 Strip-shaped continuous film and its use Active EP2848425B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013015689.0A DE102013015689A1 (en) 2013-09-16 2013-09-16 Strip-shaped endless foil and its use

Publications (4)

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EP2848425A2 EP2848425A2 (en) 2015-03-18
EP2848425A3 EP2848425A3 (en) 2015-04-22
EP2848425B1 true EP2848425B1 (en) 2016-11-09
EP2848425B2 EP2848425B2 (en) 2020-03-18

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016009318A1 (en) 2016-08-02 2018-02-08 Giesecke+Devrient Currency Technology Gmbh Method and transfer film for transferring motif-shaped security elements onto a target substrate
DE102017004999A1 (en) 2017-05-24 2018-11-29 Giesecke+Devrient Currency Technology Gmbh Process for the production of multi-use strips and their use
DE102018001379A1 (en) * 2018-02-21 2019-08-22 Giesecke+Devrient Currency Technology Gmbh transfer materials

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EP0433575A1 (en) 1989-12-21 1991-06-26 Landis &amp; Gyr Technology Innovation AG Device for applying marks with embossing foils
EP0497555A1 (en) 1991-01-28 1992-08-05 Dai Nippon Printing Co., Ltd. Patterned reflective transfer foils and their use as recording materials
EP0537439A1 (en) 1991-10-14 1993-04-21 Landis &amp; Gyr Technology Innovation AG Security element
DE4404128A1 (en) 1993-02-19 1994-08-25 Gao Ges Automation Org Security document and method for its manufacture
EP0675006A1 (en) 1994-03-31 1995-10-04 Giesecke & Devrient GmbH Laminate with optically variable individual elements transferable onto objects to be protected
DE4423291A1 (en) 1994-07-02 1996-01-11 Kurz Leonhard Fa Embossing foil, in particular hot stamping foil with decoration or security elements
WO1996009174A1 (en) 1994-09-22 1996-03-28 Leonhard Kurz Gmbh & Co. Transfer film
EP0869408A1 (en) 1996-09-19 1998-10-07 Dai Nippon Printing Co., Ltd. Volume hologram laminate and label for preparing volume hologram laminate
EP1273705A1 (en) 2001-07-06 2003-01-08 Giesecke & Devrient GmbH Method and apparatus for preparing a substrate with security elements for security documents
EP1310381A2 (en) 2001-11-09 2003-05-14 Hueck Folien GmbH Weblike materials with surface structure, method of manufacture and use thereof
US6627286B1 (en) 1998-03-26 2003-09-30 Leonhard Kurz Gmbh & Co. Embossing foil, especially hot embossing foil
DE102008021944A1 (en) 2008-05-02 2009-11-05 Giesecke & Devrient Gmbh Safety element e.g. long-lasting economical anti-copy device strip, attachment method for forming safety or value document e.g. banknote, involves irradiating UV rays on safety elements of foils arranged on web
DE102010034793A1 (en) 2010-08-18 2012-02-23 Hologram Industries Research Gmbh Document with hologram and method for its production

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DE102007005416B4 (en) * 2007-01-30 2016-03-31 Leonhard Kurz Gmbh & Co. Kg Embossing foil and thus formed safety sticker
DE102009053978A1 (en) * 2009-11-23 2011-06-01 Leonhard Kurz Stiftung & Co. Kg Multi-layer body

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0433575A1 (en) 1989-12-21 1991-06-26 Landis &amp; Gyr Technology Innovation AG Device for applying marks with embossing foils
EP0497555A1 (en) 1991-01-28 1992-08-05 Dai Nippon Printing Co., Ltd. Patterned reflective transfer foils and their use as recording materials
EP0537439A1 (en) 1991-10-14 1993-04-21 Landis &amp; Gyr Technology Innovation AG Security element
DE4404128A1 (en) 1993-02-19 1994-08-25 Gao Ges Automation Org Security document and method for its manufacture
EP0675006A1 (en) 1994-03-31 1995-10-04 Giesecke & Devrient GmbH Laminate with optically variable individual elements transferable onto objects to be protected
DE4423291A1 (en) 1994-07-02 1996-01-11 Kurz Leonhard Fa Embossing foil, in particular hot stamping foil with decoration or security elements
WO1996009174A1 (en) 1994-09-22 1996-03-28 Leonhard Kurz Gmbh & Co. Transfer film
EP0869408A1 (en) 1996-09-19 1998-10-07 Dai Nippon Printing Co., Ltd. Volume hologram laminate and label for preparing volume hologram laminate
US6627286B1 (en) 1998-03-26 2003-09-30 Leonhard Kurz Gmbh & Co. Embossing foil, especially hot embossing foil
EP1273705A1 (en) 2001-07-06 2003-01-08 Giesecke & Devrient GmbH Method and apparatus for preparing a substrate with security elements for security documents
EP1310381A2 (en) 2001-11-09 2003-05-14 Hueck Folien GmbH Weblike materials with surface structure, method of manufacture and use thereof
DE102008021944A1 (en) 2008-05-02 2009-11-05 Giesecke & Devrient Gmbh Safety element e.g. long-lasting economical anti-copy device strip, attachment method for forming safety or value document e.g. banknote, involves irradiating UV rays on safety elements of foils arranged on web
DE102010034793A1 (en) 2010-08-18 2012-02-23 Hologram Industries Research Gmbh Document with hologram and method for its production

Also Published As

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EP2848425A2 (en) 2015-03-18
EP2848425A3 (en) 2015-04-22
EP2848425B2 (en) 2020-03-18
DE102013015689A1 (en) 2015-03-19

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