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EP1567364B1 - Element de securite et procede de production de cet element - Google Patents

Element de securite et procede de production de cet element Download PDF

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Publication number
EP1567364B1
EP1567364B1 EP03772305A EP03772305A EP1567364B1 EP 1567364 B1 EP1567364 B1 EP 1567364B1 EP 03772305 A EP03772305 A EP 03772305A EP 03772305 A EP03772305 A EP 03772305A EP 1567364 B1 EP1567364 B1 EP 1567364B1
Authority
EP
European Patent Office
Prior art keywords
adhesive
security element
surface structures
substrate
layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03772305A
Other languages
German (de)
English (en)
Other versions
EP1567364A1 (fr
Inventor
Lars Hoffmann
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 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
Application filed by Giesecke and Devrient GmbH filed Critical Giesecke and Devrient GmbH
Publication of EP1567364A1 publication Critical patent/EP1567364A1/fr
Application granted granted Critical
Publication of EP1567364B1 publication Critical patent/EP1567364B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • 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
    • B44C1/1716—Decalcomanias provided with a particular decorative layer, e.g. specially adapted to allow the formation of a metallic or dyestuff layer on a substrate unsuitable for direct deposition
    • 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
    • B42D25/355—Security threads
    • B42D2033/20—
    • B42D2035/20—

Definitions

  • the invention relates to a security element and a security paper and a document of value with such a security element, which has partially filled with adhesive, diffraction-optically effective surface structures. Furthermore, the invention relates to a method for producing the security element.
  • value documents are in particular banknotes, check forms, shares, passports, passports, credit cards, air tickets and other documents and documents as well as labels, seals, packaging and other elements for product assurance.
  • unprinted security paper and other unprinted value document substrates come into consideration as semifinished products for the production of the aforementioned value documents.
  • the security elements are often equipped with diffraction structures, such as conventional holograms, kinegrams, pixelgrams, etc.
  • the diffraction structures are usually produced by converting the diffraction structures into a relief structure which is subsequently used as an embossing stamp.
  • the embossing is usually carried out in a thermoplastic layer or a curable during the embossing lacquer or resin layer.
  • these layers are provided before or usually after the embossing process with a reflective layer.
  • this is a thin metal layer, with transparent security elements a layer of dielectric, such as, for example, in US Pat DE 41 30 896 A1 described.
  • embossed structures are visually perceptible to a viewer only when using one or even several additional reflection layers.
  • the stamp can also be used only for the respective job.
  • variable or even individualized diffraction structures can therefore only be provided if a correspondingly high number of stamping dies is produced, so that the additional costs are distributed among as many final products as possible. For small runs or productions that are to be provided with different diffraction structures, the production costs are therefore too high.
  • a relief hologram with a non-metallic transparent surface is known, which is fixed to a substrate.
  • the surface structures are facing the substrate.
  • spacers are provided.
  • the covered by the spacer surface should be kept as small as possible.
  • the spacers should be transparent.
  • the US patent US 5,591,527 relates to optical security elements and methods for their production.
  • the security elements comprise a first layer having a structured surface, which has a multiplicity of geometric depressions, a transparent adhesive layer adjoining it in regions and filling the recesses, a second layer adjoining the adhesive layer, and a release layer.
  • the release layer only contacts the tips of the structured surface and is intended to keep the wells of the structured surface spaced from the second layer.
  • the invention is therefore based on the object to provide a security element, transfer element, security paper, value document and a method for their preparation.
  • the method is intended to enable low-cost production in an economical manner, in particular even for small runs or varying information, without the forgery-proof security of the security element, transfer element, security paper and value document according to the invention being reduced.
  • the security element has a carrier and a substrate with diffractive optical surface structures, wherein the surface structures of the substrate surface facing the carrier. Between the carrier and the substrate is a partially present adhesive layer which fills the surface structures at least completely. At least some of the surface structures not filled with the adhesive layer are not directly coated with a reflective layer or another liquid or solid layer, as is absolutely necessary in contrast to the prior art. "Immediately coated” in the sense of the invention means that, for example, the reflection layer and the surface structures are not spaced apart from each other and the reflection layer comes to rest directly on the surface structures. Contrary to the usual expectations, the surface structures not filled with adhesive are clearly visible as patterns that can be perceived as diffraction-optical, without having to use an additional reflection layer.
  • the surface structures not filled with adhesive are presumably at a distance from the carrier, so that air is trapped here.
  • the difference in refractive indices Thus, air and the material containing the surface structures already seems to be sufficient to produce a structure having a diffraction-optical effect.
  • optical diffraction effect surface structures are refraction patterns, holograms, as well as grid structures (eg Kinegram ®, pixels grams) or the like into consideration. They are preferably relief-like diffraction structures, in particular embossed diffraction structures.
  • the diffraction structures can be introduced directly into the substrate. However, they can also be introduced into an additional lacquer layer applied to the substrate, preferably embossed.
  • the diffraction patterns visually visible on the basis of the diffraction structures can be designed as desired. Thus, depending on the desired application or security level on the one hand simplest geometrical patterns, on the other hand, but also complicated image subjects conceivable.
  • the substrate is preferably a plastic film, preferably PET (polyethylene terephthalate), POP (polyphenylene oxide), PEN (polyethylene naphthalate) or PC (polycarbonate).
  • PET polyethylene terephthalate
  • POP polyphenylene oxide
  • PEN polyethylene naphthalate
  • PC polycarbonate
  • the film thickness can be between 6 and 100 ⁇ m, preferably between 12 and 23 ⁇ m.
  • the substrate is preferably transparent or at least translucent and may also be colored in particular embodiments.
  • the support may, like the substrate, be a plastic film, but paper, in particular banknote paper based on cotton fibers, may as well be used. Plastic cards or composite materials are used.
  • the support preferably has a black or silvery inherent color or is coated on the side facing the substrate, preferably printed, in order to make the diffraction structures appear optically more brilliant by increased reflection on the support.
  • the substrate can be designed accordingly.
  • Substrate such as carriers may additionally be provided with mechanically and / or visually perceptible feature substances, e.g. Luminescent substances, magnetic materials etc.
  • mechanically and / or visually perceptible feature substances e.g. Luminescent substances, magnetic materials etc.
  • the adhesive used in the adhesive layer is, for.
  • commercially available adhesives for bonding supports and substrate materials e.g. Glue from Morton.
  • the adhesive at least completely fills up the surface structures present in the substrate in certain areas.
  • the thickness of the adhesive layer should therefore be at least as large as the depth of the diffractive optical surface structure.
  • the composition of the adhesive is to be chosen so that at the applied to the surface structures bodies, the surface structures are no longer effective diffraction optically, i. a e.g. holographic effect can no longer be perceived at these points. This can be achieved by making the difference between the refractive indices of the surface structure-containing layer and the adhesive layer small enough. Usually, the refractive indices differ by 0.3 or less, preferably by 0.1 or less.
  • “Area-wise” in the sense of the invention means that the adhesive fills a portion of the surface structure.
  • the glue can basically exist in any patterns. Simple geometric patterns up to complicated, if necessary also finely structured forms are conceivable.
  • the adhesive is applied over the entire surface, wherein recesses are incorporated in the adhesive surface.
  • the adhesive may be grid-shaped, such as in the form of a point grid, be applied.
  • additional information can be incorporated into the surface pattern appearing to the viewer by controlling the size and number of raster elements.
  • a halftone motif can be converted by means of the raster, whereby the tone values of a template are reproduced by the number and size of the raster elements.
  • the adhesive is preferably processed in complicated patterns. If complicated, complex surface structures are present, it may already be sufficient to secure the adhesive in simple geometrical patterns.
  • the adhesive layer individually. It is also possible to use an adhesive layer containing colored pigments. Due to the colored design of the areas filled with adhesive, they are clearly visible in relation to the regions having the diffraction-optically effective surface structures.
  • the application of the adhesive layers can also take the form of a specific pattern, which is composed of differently colored adhesives.
  • the information present by means of adhesive and surface structures can be determined by background information, be supplemented for example by a print, in the carrier and / or substrate.
  • the security element can be generated directly on the value document or security paper or integrated as a separately producible element in the structure or subsequently applied. It can be e.g. to act a security thread, which consists of a self-supporting plastic film. This security thread can be at least partially incorporated into a security paper or security document. However, it is also conceivable to form the security element band or label-like and to attach to the surface of the security paper or value document.
  • the security element can also be designed as a transfer element.
  • a "transfer element" in the sense of the invention is a security element which is prepared on a separate layer, for example a plastic film, in the reverse order as it later comes to lie on the security paper and then by means of an adhesive or lacquer layer in a hot embossing process is transferred in the desired outline contours on the security paper or document of value.
  • the separate layer can be removed after the transfer of the security element or remain as a protective layer as an integral part of the security element on the layer structure.
  • the security element is arranged on the surface of the security paper or value document, then it can have any outline structures, such as round, oval, star-shaped, rectangular, trapezoidal or strip-shaped outline contours.
  • the use of the security element according to the invention is not restricted to the field of the value document.
  • the security element according to the invention can also be used advantageously in the field of product security for securing counterfeiting of any goods.
  • the security element additionally anti-theft elements, such as a coil or a chip have. The same applies to the security paper or security document provided with such a security element.
  • the desired diffraction-optically effective surface structures are first introduced, preferably embossed, into the substrate or a coating layer additionally applied to the substrate.
  • the adhesive is applied in regions to the surface of the substrate carrying the surface structures.
  • the adhesive is printed, e.g. in roll intaglio, bow screen printing.
  • the adhesive may also be masked e.g. be sprayed on. The adhesive fills in the surface structures, so that in the areas coated with adhesive, the surface structure is probably no longer seen as a diffraction pattern due to the lack of refraction.
  • the adhesive-equipped substrate is then applied to the substrate.
  • the carrier may first be provided with adhesive in regions, and then the substrate provided with surface structures may be transferred to the carrier.
  • the coating method according to the invention offers the advantage that it can be used in an extremely economical manner, i. Save costs and time, individual security elements can be produced even in small quantities.
  • the security elements and documents of value produced according to the invention despite cost-effective manufacturing process on a high security against forgery, since they are easily recognizable without further aids due to the visually striking surface structures and can be very difficult to reproduce.
  • the visible diffraction patterns can be precisely positioned by the simple handling of the adhesive and thus appear exactly at the desired location in the final product at any point.
  • Fig.1 shows an inventive document of value in supervision.
  • it is a card 1 with chip 11, which has a region in the cover, which is designed as a security element 2 according to the invention.
  • the security element 2 is shaped like a strip and extends over the entire width of the card 1.
  • the surface of the security element 2 facing the viewer has, according to the invention, partially diffraction patterns 3 that are visible.
  • the card 1 may have further security elements such as a security thread (not shown).
  • Fig. 2 shows a cross section along the line A - A in Fig.1 ,
  • the card body in this case made of plastic 6, acts as a support for the adhesive layer 5 present in regions.
  • the cover film 12 can be seen above the adhesive layer 5, which is composed of a plastic substrate 9 and a lacquer layer 4 into which the diffraction structure 7 is embossed.
  • the diffraction structure appears to the viewer as already intricately structured pattern and can contain, for example, the company logo in microfilm as an endless pattern.
  • the upper half of the security element 2 in Fig. 1 the left part of the Fig.
  • the security element 2 corresponds to this diffractive optical conspicuous pattern with the outline of a rectangle, which, as in Fig.2 was realized by the fact that the entire surface in the lacquer layer 4 diffraction structures 7 were filled to a rectangle with adhesive.
  • a reverse application of the adhesive would be conceivable, ie the adhesive could with the outline of a rectangle or in the form of the letters "PL.” be applied.
  • the adhesive may for example be colored so that the region of the security element 2 surrounding the diffraction structures 3 emerges in color.
  • Fig. 3 shows that in Fig. 2
  • This transfer element 8 consists of a separate layer 10, which is optionally provided with a release layer to ensure a defined detachment of the separate layer of the layers to be transferred.
  • the separation layer is not shown.
  • the separate layer is followed by a plastic layer 9 and a lacquer layer 4, in which diffraction structures 7 are embossed.
  • the transfer element 8 also has a partially applied adhesive layer 5, which is activated on transfer to the corresponding security paper or document of value by means of heat and pressure in the areas to be transferred to the cover film 12 on the security paper or document of value.
  • the adhesive layer 5 can be colored in order to achieve special optical effects.
  • the applied adhesive layer in all areas consists of a colored in the same color glue. Rather, it would also be possible to assemble the adhesive layer 5 in the form of a specific pattern of differently colored adhesives.
  • the separate layer 10 is peeled off.

Landscapes

  • Credit Cards Or The Like (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)

Claims (13)

  1. Elément de sécurité, comprenant
    ■ un support (6) et
    ■ un substrat (12) qui présente, au moins sur la surface orientée vers le support (6), au moins en partie des structures de surface (7) à effet de diffraction optique et
    ■ une couche d'adhésif (5) se trouvant entre le substrat (12) et le support (6) et comblant les structures de surface (7) au moins complètement en certaines zones, au moins une partie des zones des structures de surface (7) non comblées par la couche d'adhésif (5) n'étant pas revêtue directement d'une couche réfléchissante et les zones comblées par la couche d'adhésif (5) se présentant sous forme d'un motif constituant une information, caractérisé en ce que la couche d'adhésif (5) est teinte avec un colorant ou avec un additif de couleur.
  2. Elément de sécurité selon la revendication 1, au moins une partie des zones des structures de surface non comblées par la couche d'adhésif n'étant pas directement revêtue d'une autre couche solide ou liquide.
  3. Elément de sécurité selon au moins une des revendications précédentes, les structures de surface étant des structures de diffraction gaufrées.
  4. Elément de sécurité selon au moins une des revendications précédentes, les structures de diffraction étant gaufrées dans une couche de vernis supplémentaire.
  5. Elément de sécurité selon au moins une des revendications précédentes, les structures de surface n'ayant plus d'effet de diffraction optique dans la zone des structures de surface comblées par la couche d'adhésif.
  6. Elément de sécurité selon au moins une des revendications précédentes, le substrat étant un film en matière plastique.
  7. Elément de sécurité selon au moins une des revendications précédentes, le support étant composé de papier ou de matière plastique.
  8. Elément de sécurité selon au moins une des revendications précédentes, la couche d'adhésif comportant des pigments colorés.
  9. Elément de sécurité selon au moins une des revendications précédentes, le support étant imprimé sur le côté orienté vers le substrat.
  10. Document de valeur comprenant un élément de sécurité selon au moins une des revendications de 1 à 9.
  11. Papier de sûreté destiné à la fabrication d'un document dé valeur selon la revendication 10, comprenant un élément de sécurité selon au moins une des revendications de 1 à 9.
  12. Elément de transfert, comprenant une couche séparée (10) et un substrat (9, 4) qui présente, au moins sur la surface orientée de manière opposée à la couche séparée, au moins en partie des structures de surface (7) à effet de diffraction optique, et une couche d'adhésif (5) comblant les structures de surface (7) au moins complètement en certaines zones, au moins une partie des zones des structures de surface (7) non comblées par la couche d'adhésif (5) n'étant pas revêtue directement d'une couche réfléchissante et les zones comblées par la couche d'adhésif (5) se présentant sous forme d'un motif constituant une information, caractérisé en ce que la couche d'adhésif (5) est teinte avec un colorant ou avec un additif de couleur.
  13. Procédé de fabrication de l'élément de sécurité selon au moins une des revendications de 1 à 9,
    ■ un support étant mis à disposition,
    ■ de l'adhésif étant appliqué sur le support sur certaines zones, et
    ■ un substrat comprenant des structures de surface à effet de diffraction optique étant appliqué par-dessus l'adhésif, les structures de surface venant se situer sur l'adhésif,
    ou
    ■ un substrat comprenant des structures de surface étant mis à disposition,
    ■ de l'adhésif étant appliqué sur les structures de surface sur certaines zones
    et
    ■ le substrat étant appliqué avec la couche d'adhésif sur un support, au moins une partie des structures de surface qui ne viennent pas se situer sur l'adhésif n'étant pas revêtue directement d'une couche réfléchissante et l'adhésif étant appliqué de telle manière que les zones pourvues de l'adhésif se présentent sous forme d'un motif constituant une information, caractérisé en ce que la couche d'adhésif est teinte avec un colorant ou avec un additif de couleur.
EP03772305A 2002-11-05 2003-11-04 Element de securite et procede de production de cet element Expired - Lifetime EP1567364B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10251781 2002-11-05
DE10251781A DE10251781A1 (de) 2002-11-05 2002-11-05 Sicherheitselement und Verfahren zu seiner Herstellung
PCT/EP2003/012296 WO2004041546A1 (fr) 2002-11-05 2003-11-04 Element de securite et procede de production de cet element

Publications (2)

Publication Number Publication Date
EP1567364A1 EP1567364A1 (fr) 2005-08-31
EP1567364B1 true EP1567364B1 (fr) 2009-04-22

Family

ID=32115319

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03772305A Expired - Lifetime EP1567364B1 (fr) 2002-11-05 2003-11-04 Element de securite et procede de production de cet element

Country Status (5)

Country Link
EP (1) EP1567364B1 (fr)
AT (1) ATE429338T1 (fr)
AU (1) AU2003279357A1 (fr)
DE (2) DE10251781A1 (fr)
WO (1) WO2004041546A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110062701A (zh) * 2016-10-04 2019-07-26 霍克佛莱恩有限公司 安全元件和具有该安全元件的有价文件

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1737659B1 (fr) 2004-04-13 2009-11-11 manroland AG Garniture pour dispositif d'estampage
DE102005011568A1 (de) 2004-04-13 2005-11-17 Man Roland Druckmaschinen Ag Produktionsverfahren für eine Prägeeinrichtung in einer Bogendruckmaschine
DE102006039305A1 (de) 2006-07-21 2008-01-24 Giesecke & Devrient Gmbh Sicherheitsfaden mit optisch variablem Sicherheitsmerkmal
DE102007005414A1 (de) * 2007-01-30 2008-08-07 Ovd Kinegram Ag Sicherheitselement zur Sicherung von Wertdokumenten
DE102007044482A1 (de) 2007-09-18 2009-03-19 Giesecke & Devrient Gmbh Sicherheitselement mit Tamper Evident-Effekt
WO2009103274A1 (fr) * 2008-02-18 2009-08-27 Hologram Industries Research Gmbh Procédé d'application individuelle d'un film pour estampage à chaud et documents de sécurité fabriqués par ce procédé
MX342719B (es) * 2010-06-28 2016-10-11 Leonhard Kurz Stiftung & Co Kg Metodo para decorar superficies.
GB201316348D0 (en) * 2013-09-13 2013-10-30 Andrews & Wykeham Ltd Security laminate/foil
CN112572018B (zh) * 2019-09-29 2022-06-14 中钞特种防伪科技有限公司 多层体光学防伪元件及其制作方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4921319A (en) * 1989-01-23 1990-05-01 American Bank Note Holographics, Inc. Surface relief hologram structure with reflection from an air interface
US5591527A (en) * 1994-11-02 1997-01-07 Minnesota Mining And Manufacturing Company Optical security articles and methods for making same
GB9709263D0 (en) * 1997-05-07 1997-06-25 Astor Universal Limited Laminate structure
EP2309339B1 (fr) * 1999-01-19 2016-11-30 Dai Nippon Printing Co., Ltd. Feuillet comprenant un hologramme de relief ou une structure diffractive et feuillet anti-contrefaçon le comprenant

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110062701A (zh) * 2016-10-04 2019-07-26 霍克佛莱恩有限公司 安全元件和具有该安全元件的有价文件
CN110062701B (zh) * 2016-10-04 2021-04-02 霍克佛莱恩有限公司 安全元件和具有该安全元件的有价文件

Also Published As

Publication number Publication date
DE10251781A1 (de) 2004-05-19
EP1567364A1 (fr) 2005-08-31
DE50311459D1 (en) 2009-06-04
ATE429338T1 (de) 2009-05-15
AU2003279357A1 (en) 2004-06-07
WO2004041546A1 (fr) 2004-05-21

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