EP1094943A1 - Ameliorations apportees a des documents de securite et substrats prevus a cet effet - Google Patents

Ameliorations apportees a des documents de securite et substrats prevus a cet effet

Info

Publication number
EP1094943A1
EP1094943A1 EP99928086A EP99928086A EP1094943A1 EP 1094943 A1 EP1094943 A1 EP 1094943A1 EP 99928086 A EP99928086 A EP 99928086A EP 99928086 A EP99928086 A EP 99928086A EP 1094943 A1 EP1094943 A1 EP 1094943A1
Authority
EP
European Patent Office
Prior art keywords
substrate
layer
layers
polymeric
metallic
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.)
Withdrawn
Application number
EP99928086A
Other languages
German (de)
English (en)
Inventor
Christopher John Ames
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.)
De la Rue International Ltd
Original Assignee
De la Rue International Ltd
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 De la Rue International Ltd filed Critical De la Rue International Ltd
Publication of EP1094943A1 publication Critical patent/EP1094943A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/425—Marking by deformation, e.g. embossing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/10—Removing layers, or parts of layers, mechanically or chemically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29—Securities; Bank notes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/342—Moiré effects
    • 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
    • B42D25/351—Translucent or partly translucent parts, e.g. windows
    • 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
    • B42D25/369—Magnetised or magnetisable materials
    • 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
    • B42D25/373—Metallic materials
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/43—Marking by removal of material
    • B42D25/445—Marking by removal of material using chemical means, e.g. etching
    • 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
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/41—Opaque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/514—Oriented
    • B32B2307/518—Oriented bi-axially

Definitions

  • the invention relates to improved security documents such as banknotes, cheques and passports which are required to provide a high degree of security against imitation and a substrate for producing such security documents.
  • Such documents are traditionally made from security paper, that is paper having good durability and a high resistance to crumpling and tearing. However, such documents are still prone to damage through water, cutting and eventual wear. Furthermore such security documents are vulnerable to forgery.
  • security devices such as security threads or strips which are made from a transparent polyester film provided with a wholly or partially reflective metallised layer. The threads are wholly or partially embedded within the paper and provide a high degree of security against counterfeiting.
  • the paper itself is still subject to a degree of wear and damage . This problem has been addressed in International Patent Application WO83/00659 which describes a plastic banknote.
  • This banknote is made up from one or more films of transparent biaxially oriented polymers which are coated with layers of relatively opaque printing ink and heat activated adhesive material.
  • An optically variable security device such as a diffraction grating is adhered to the substrate in a window left in the opaque layer.
  • the substrate is then printed with identifying indicia and covered on both sides by further layers of polymer material.
  • Most counterfeiters do not have access to equipment for making such materials and plastic banknotes are damage and wear resistant.
  • biaxially oriented polymer films such as those described in WO83/00659 have excellent resistance to tear initiation (i.e. edge tear resistance) they have poor resistance to tear propagation (i.e. internal tear resistance) when compared to paper.
  • US 5618630 and WO97/01438 describe multi-layer film structures for use in the production of banknotes.
  • the substrate utilises at least two films with unbalanced biaxial orientation laminated such that the major axis of orientation are eventually parallel.
  • US 5618630 differs in that the major orientation axis are essentially perpendicular.
  • the basic substrate of these prior art documents is substantially clear and requires an opacifying coating or ink to be applied for information can be printed thereon for use as a banknote .
  • a substrate for security documents comprising at least a plurality of layers of polymeric film laminated together with at least one metallic layer therebetween, wherein at least one of the polymeric layers is biaxially oriented and at least another comprises an opaque voided film wherein the opacity of at least a portion of the voided polymeric layer is reduced.
  • At least a portion of the voided polymeric layer is preferably transparentised.
  • At least a portion of the substrate is preferably subjected to pressure and heat treatment to provide an area of varying thickness which is detectable by touch.
  • the at least one metallic layer is partially demetallised
  • the at least one metallic layer has a translucent coloured coating on one or both sides.
  • a plurality of metallic layers is preferably located between the polymeric layers.
  • the metallic layers are preferably provided by different metals.
  • At least one metallic layer may provide an electrically conductive path along the width or length of the substrate.
  • a magnetic material may be located between the polymeric layers.
  • the magnetic material may be located between at least two metallic layers.
  • All external polymeric layers may comprise opaque voided films.
  • one of the external polymeric layers is transparent .
  • At least one internally printed layer is preferably provided between the polymeric layers.
  • the ink may be coloured and translucent or opaque .
  • the ink may be luminescent .
  • the thicknesses of at least two of the polymeric layers are preferably different.
  • the invention also provides a security document produced from the substrate, on the external surfaces of which are printed indicia. Indicia may be printed on the internal surfaces of one or more of the polymeric layers .
  • Identifying indicia may be printed on the external surfaces of the substrate and the internal surfaces of one or more of the polymeric layers.
  • Figs. 1 and 3 to 6 are longitudinal cross- sectional side elevations of alternative embodiments of a substrate for a security document according to the present invention.
  • Fig. 2 is a plan view of a security document according to the present invention.
  • the substrate 11 comprises a laminate of at least two polymeric layers 14, 15 laminated together with at least one partial or whole layers of metal 17 sandwiched between the polymeric layers 14, 15.
  • Layer 14 is preferably a biaxially oriented transparent polymeric film which has been metallised with a layer 17 of metal.
  • the metal layer 17 may be vacuum deposited aluminium, although another metal such as gold may be used.
  • the metallised film 14, 17 may be an
  • SHM (TM) film from Hoechst Trespaphan which is available in various thicknesses .
  • Layer 15 comprises a relatively opaque voided polymer film, sometimes referred to as opalescent or pearlised, instead of a transparent polymer film.
  • Such pearlised films are rendered partially opaque by minute voids within the film. These may be caused by a variety of processes; in some the orientation process alone initiates the voids, in others an immiscible polymer is added or a finely divided pigment. These voids, however caused, scatter incident or transmitted light to cause a degree of opacity.
  • the degree of opacity is intermediate between transparent films and heavily pigmented, fully opaque films, and the degree of opacity depends on how the film is voided, the number and size of the voids formed and the pigment, if any.
  • Examples of such voided films suitable for use in the present invention include Valeron (TM) from Van Leer Flexible Packaging, SHP (TM) from Hoechst Trespaphan and Oppalyte (TM) from Mobil. Typical thicknesses range from 35 to 125 microns according to the material used.
  • the film is a cross- laminate made from two essentially monoaxially oriented thermoplastic polymeric films, which have been slit at an angle to the orientation axis as described in GB 1577128.
  • a multiplicity (usually two) of these monoaxial films are suitably laminated the resulting cross-ply laminate has superior tear propagation resistance to a typically biaxially oriented film. This is particularly suitable for security documents, which may be pinned or stapled, and are therefore prone to tear initiation.
  • These cross-ply laminates are available as an essentially transparent film (e.g.
  • Valeron HS (TM) , a relatively opaque film without pigment and a pigmented opaque film (various Valeron grades) from Van Leer Flexible Packaging.
  • An advantage of using these relatively opaque films lies in the ability to collapse the voids, for example by the application of pressure or heat and pressure, thereby reducing the light scattering property of the collapsed voids. This may be done selectively, for example by using a hot stamping die, or an intaglio or alto plate to provide the substrate with indicia, ranging from pseudo watermarks to wholly transparent windows, depending on the characteristics of the voided film.
  • the heat and pressure treatment can be used to reveal the metallic layer 17 in selected regions without the need for a transparent polymeric layer.
  • the metal layer 17 within the substrate 11 further increases the opacity of such voided films so that a substrate 11 having a combination of opaque and metallic regions on one side and just metallic regions on the opposite side can be formed.
  • the substrate may also include additional security features, such as printed indicia, security devices and so on sandwiched between the polymeric layers.
  • additional security features such as printed indicia, security devices and so on sandwiched between the polymeric layers.
  • the outermost polymeric layers protect these features from damage or removal and may be used to conceal them.
  • the polymeric films selected may be co- extruded multilayer thermoplastic films, of the type used in heat sealable packaging films, which may be laminated together when thermally activated.
  • the layers 14, 15 are preferably laminated together with a layer of a suitable adhesive, such as a cross-linking or thermally activated adhesive 16, with the metallic layer 19 located between the transparent layers 14, 15 so that it is wholly encapsulated within the substrate 11.
  • a suitable adhesive such as a cross-linking or thermally activated adhesive 16
  • the metallic layer 19 located between the transparent layers 14, 15 so that it is wholly encapsulated within the substrate 11.
  • the opaque layer 15 provides a suitable background to be printed with superficial indicia 12, such as identifying indicia, to form a security document 10, such as illustrated in Fig. 2, the superficial indicia 12 can be seen clearly.
  • Other indicia may be printed in a translucent medium on the layer 14 to provide a coloured metallic appearance, similar to coloured metallic foils (hot stamped or otherwise applied) and of enhanced reflective appearance to surface applied metallic inks.
  • Example 2
  • both of the external layers of film 14, 15 are voided films with regions of collapsed voids providing windows 25.
  • the non-windowed areas are white and opaque.
  • the shiny metal layer 17 can be seen in reflected light.
  • Example 3 In a modification of the substrate 11 described in example 1 or example 2, the metal layer 14 may be selectively metallised or demetallised, as shown in Fig. 3, to leave regions of opaque metal 18 and clear regions 19, which regions 18, 19 form embedded indicia 13.
  • the embedded indicia 13 may be of a positive nature, i.e. the indicia 13 formed by the metallic regions 18, or negative in which the indicia 13 are formed by the clear regions 19.
  • the indicia 13 may be in the form of alphanumeric text, a pattern, or any other appropriate form, some examples of which are shown in Fig. 2.
  • the substrate 11 incorporating embedded indicia
  • the pre-imaged substrate 11 may then be subsequently printed with superficial indicia 12 or, if the embedded indicia 13 constitute identifying indicia, the pre-imaged substrate 11 may be used as a security document in its own right .
  • Fig. 2 illustrates a security document 10 produced from a substrate as described above in which the layer 15 is provided by a voided film.
  • the document 10 When viewed from the side of the substrate 11 formed by a voided film layer, the document 10 is mainly opaque white, the shiny metal regions 18 forming indicia 13 which are partially revealed in one or more windows 25 which have been created in the layer 15 by hot stamping or one form of void collapsing process.
  • the demetallised regions 19, where viewed through the windows 25, are transparent.
  • the indicia can be seen as bright shiny metallic regions 18 against a white background, except where windows 25 are provided.
  • the resulting effect can be further enhanced by coating the metal regions 18 with a coloured translucent ink as in example 6, which contrasts with the white of the voided film layer 15.
  • the ability to image the substrates 11 in the manner described above by collapsing the voids means that it can be carried out after external indicia 12 have been applied to the security document.
  • the pattern forming the embedded indicia 13 may be a screen pattern which gives variable opacity, for example a continuous change in opacity by making the screen ruling or dot size progressively smaller or larger.
  • the selective demetallisation may also be used to provide embedded indicia in the form of a moire pattern so that when the substrate 11 is placed between the viewer windows of a detector, an image is revealed by interference with a design in the detector window .
  • the demetallisation of large areas of the metallised layer 14 may also be used to provide a pseudo watermark effect with very high resolution, similar to that achieved by intaglio printing.
  • Such selective demetallisation provides a high quality image with good resolution.
  • any suitable methods may be used, such as direct etching or indirect etching using a resist.
  • coloured resist materials may be employed which leaves a layer or translucent coloured matieral on the metallised regions 18 resulting in indicia 13 having a good coloured metal effect.
  • a selective metallisation process may be used or the metal regions 18 may be created by printing with a high reflectivity metallic ink.
  • Another alternative to making the substrate 11 illustrated in Fig. 3 would be to laminate one polymeric layer 14 with a pre-imaged metal foil layer.
  • a further alternative would be to image the metallic layer by laser cutting or ablation of the metal either as an intermediate step in the construction of the substrate, or subsequent to its assembly. This would be particularly useful for metal other than aluminium, e.g. stainless steel.
  • both layers 14, 15 are wholly metallised.
  • layers 14, 15 are metallised with different metals having different appearances or colours, e.g. aluminium and gold.
  • the substrate 11 will have different appearances when viewed from each side in reflected light through a window or windows in the voided film layer 15 or through the transparent layer 14, e.g. silver from one side and gold from the other.
  • the substrate 11 of example 3 may be further modified as shown in Fig. 4 by providing one fully metallised layer 15, 20 and one selectively demetallised layer 14,18 wherein the metal layer 20 is a metal having a different visual appearance from the metal regions 18.
  • Alternative methods may be used of achieving a different metallic appearance by the use of translucent coloured layers or coatings, e.g. by dyeing the adhesive layer.
  • the full metal layer 20 is gold and the metal regions 18 are aluminium
  • the appearance of the substrate 11 when viewed in reflected light from the direction of arrow B will be gold.
  • the substrate 11 When viewed from the direction of arrow A the substrate 11 will appear to be silver in the metallised regions 18 and gold in the demetallised regions 19.
  • the reference to viewing is through the transparent layer 14 or window (s) in the voided layer 15.
  • both layers 14, 15 may be selectively demetallised having metallised regions 18a, 18b and demetallised regions 19a, 19b respectively.
  • regions 18a are gold and 18b are aluminium
  • the embedded indicia 13 will appear silver where regions 18b are present, having some gold regions where regions 18b are absent but where regions 18a are present.
  • the embedded indicia 13 will appear gold having some silver regions with some transparent non-metallised regions also present .
  • a number of different partially metallised polymeric layers could be laminated together all bearing different metallic patterns of the same metal so as to create a 3 -dimensional watermark effect.
  • any of the aforementioned examples may be modified by overprinting with a translucent coloured ink to give a coloured metallic effect.
  • the translucent coloured ink may be applied directly to one or more of the metal layer or layers 18, 18a, 18b, 20 before the polymeric layers 14, 15 are laminated together.
  • Example 8 The security of documents produced from substrates according to the present invention may be further enhanced by the provision of additional embedded indicia 13 formed by printing 26 on the inner surface (s) of the layer 14 before laminating to be visible over or through the metal layer (s) .
  • the printing 26 may be provided by black or other coloured translucent or opaque inks or inks containing luminescent materials which are invisible until activated by appropriate heat or light sources, such luminescence to include fluorescence, phosphorescence and excitation by UV, IR, visible light and other radiation as appropriate.
  • polymeric layer 14 is partially demetallised, having metal regions 18, whilst layer 15 is wholly metallised having a layer of metal 20.
  • a fluorescent ink layer 26 is printed over the metal layer 20 before lamination.
  • the substrate 11 is viewed from the direction of arrow B through window (s) in the voided film, layer 15, the shiny metallic colour of the metal layer 20 will be seen.
  • the substrate 11 when viewed from the direction of arrow A, when viewed under an ultraviolet light source the substrate 11 will fluoresce in the demetallised regions 19.
  • Such internally printed embedded indicia 13 as described in example 8 could combine metameric inks, for simple or sophisticated detector authentication features.
  • a tinted or coloured lacquer may be used to hide a Delacode or Delachrome image.
  • Infra red readable and non-readable inks could be used for features visible by transmission.
  • Such internally printed embedded indicia 13 may also include a magnetic pigmented ink or inks which provide a magnetically readable security feature for authentication at one or more levels of security according to the complexity of the designs and materials used. Where such magnetic features are used between two layers of opaque voided or metallised film, the magnetic feature provides a hidden machine- readable feature.
  • Additional security features may be embedded between the outermost polymeric layers 14, 15 of the substrate, such as diffraction gratings, holograms, RF antennae, printed circuits and so on. It is particularly advantageous to be able to embed such features, as opposed to having them mounted on the surface of the substrate, as they are not then prone to chemical attack, such as hydrolysis, or to mechanical abrasion and are protected against removal or damage .
  • the substrate 11 may comprise a laminate of more than two such layers each having the same or different features described in the examples.
  • the substrate described in the aforegoing examples can be used to make a whole range of security documents including banknotes, cheques and passports.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Credit Cards Or The Like (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention porte sur des documents de sécurité améliorés, tels que des billets, des chèques et des passeports, pour lesquels un degré de sécurité élevé est requis contre l'imitation, et sur un substrat permettant la production desdits documents de sécurité. L'invention se rapporte ainsi à un substrat pour documents de sécurité, constitué d'au moins plusieurs couches de film polymère (14 15) stratifiés ensemble avec au moins une couche métallique (17), au moins une des couches polymères étant orientée biaxialement et au moins une autre couche comprenant un film à vide opaque, l'opacité d'au moins une partie de la couche polymère à vide étant réduite.
EP99928086A 1998-06-25 1999-06-24 Ameliorations apportees a des documents de securite et substrats prevus a cet effet Withdrawn EP1094943A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9813783 1998-06-25
GB9813783A GB2338680B (en) 1998-06-25 1998-06-25 Improvementd in security documents and subtrates therefor
PCT/GB1999/001987 WO1999067093A1 (fr) 1998-06-25 1999-06-24 Ameliorations apportees a des documents de securite et substrats prevus a cet effet

Publications (1)

Publication Number Publication Date
EP1094943A1 true EP1094943A1 (fr) 2001-05-02

Family

ID=10834405

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99928086A Withdrawn EP1094943A1 (fr) 1998-06-25 1999-06-24 Ameliorations apportees a des documents de securite et substrats prevus a cet effet

Country Status (8)

Country Link
EP (1) EP1094943A1 (fr)
KR (1) KR20010053087A (fr)
AU (1) AU741706B2 (fr)
BR (1) BR9911330A (fr)
CA (1) CA2333417A1 (fr)
GB (1) GB2338680B (fr)
ID (1) ID29551A (fr)
WO (1) WO1999067093A1 (fr)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0015871D0 (en) † 2000-06-28 2000-08-23 Rue De Int Ltd A security device
EP1239307A1 (fr) * 2001-03-09 2002-09-11 Sicpa Holding S.A. Système magnétique d'interférence de couches minces
GB2375078A (en) * 2001-04-30 2002-11-06 Rue De Int Ltd Security substrate with indicia only viewable in transmitted light
US7052762B2 (en) 2001-05-24 2006-05-30 3M Innovative Properties Company Low Tg multilayer optical films
AT504463A1 (de) * 2002-04-11 2008-05-15 Hueck Folien Gmbh Beschichtetes trägersubstrat, vorzugsweise mit beidseitig unterschiedlichen optischen und/oder fluoreszierenden merkmalen
DE10218897A1 (de) 2002-04-26 2003-11-06 Giesecke & Devrient Gmbh Sicherheitselement und Verfahren zu seiner Herstellung
DE50309815D1 (de) * 2003-02-27 2008-06-19 Landqart Mehrschichtlaminat
US7655296B2 (en) 2003-04-10 2010-02-02 3M Innovative Properties Company Ink-receptive foam article
US7820282B2 (en) 2003-04-10 2010-10-26 3M Innovative Properties Company Foam security substrate
AT501566B1 (de) * 2003-12-29 2008-06-15 Hueck Folien Gmbh Sicherheitselement mit mehreren funktionellen merkmalen
CA2608458C (fr) 2004-08-09 2013-03-19 Oberthur Card Systems Sa Cartes multicouches aux caracteristiques esthetiques et procedes de fabrication associes
DE602004031647D1 (de) 2004-12-23 2011-04-14 Hueck Folien Gmbh Sicherheitselement mit einem digitalen Merkmal und Sicherheitsgegenstand oder Dokument mit demselben.
GB2452078B (en) * 2007-08-23 2009-12-23 Rue De Int Ltd Security devices for security substrates
GB2456500B (en) 2007-10-23 2011-12-28 Rue De Int Ltd Improvements in security elements
FR2925864B1 (fr) * 2007-12-28 2012-08-31 Arjowiggins Licensing Sas Feuille de securite comportant un support coextrude
FR2954211B1 (fr) * 2009-12-23 2012-02-17 Arjowiggins Security Procede de fabrication d' une feuille par densification pour former une zone rendue transparente.
US20130181434A1 (en) * 2009-12-23 2013-07-18 Eric Prique Method for manufacturing a sheet by means of compregnation in order to form an area made transparent
FR3007321B1 (fr) * 2013-06-25 2015-07-24 Arjowiggins Security Element de securite adapte pour reveler au moins deux messages distincts selon au moins deux conditions d'observation differentes et document incorporant un tel element de securite
FR3011011B1 (fr) 2013-09-23 2016-04-29 Arjowiggins Security Papier comportant des fibres synthetiques fibrillees.
FR3015355B1 (fr) 2013-12-20 2020-08-14 Arjowiggins Security Substrat synthetique multicouche
FR3034110B1 (fr) 2015-03-23 2017-04-21 Arjowiggins Security Papier comportant des fibres synthetiques
WO2017041085A1 (fr) * 2015-09-04 2017-03-09 President And Fellows Of Harvard College Modification des propriétés optiques de structures de film mince à l'aide d'un élément absorbant
EP3487678B1 (fr) * 2016-07-21 2020-11-11 SABIC Global Technologies B.V. Objet multicouche d'identité et procédé pour sa fabrication

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2279548B1 (fr) * 1974-07-26 1977-01-07 Cit Alcatel Procede de fabrication d'un materiau filigrane et materiau obtenu par ledit procede
JPS58501318A (ja) * 1981-08-24 1983-08-11 コモンウエルス　サイエンテイフイツク　アンド　インダストリアル　リサ−チ　オ−ガニゼ−シヨン バンクノート又はその他のセキュリティートークン
DE3843077A1 (de) * 1988-12-21 1990-06-28 Gao Ges Automation Org Sicherheitselement in form von faeden oder baender zur einbettung in sicherheitsdokumente sowie verfahren zur herstellung und pruefung derselben
ZA955144B (en) * 1994-06-27 1996-12-23 Mobil Oil Corp Cross-laminated multilayer film structures for use in the production of banknotes or the like
US5698333A (en) * 1994-06-27 1997-12-16 Mobil Oil Corporation Multilayer film structures for use in the production of banknotes or the like
US5815292A (en) * 1996-02-21 1998-09-29 Advanced Deposition Technologies, Inc. Low cost diffraction images for high security application

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9967093A1 *

Also Published As

Publication number Publication date
GB2338680B (en) 2000-05-17
BR9911330A (pt) 2001-04-03
ID29551A (id) 2001-09-06
GB2338680A (en) 1999-12-29
AU4521399A (en) 2000-01-10
CA2333417A1 (fr) 1999-12-29
AU741706B2 (en) 2001-12-06
WO1999067093A1 (fr) 1999-12-29
GB9813783D0 (en) 1998-08-26
KR20010053087A (ko) 2001-06-25

Similar Documents

Publication Publication Date Title
AU741706B2 (en) Improvements in security documents and substrates therefor
US5388862A (en) Security articles
KR101061710B1 (ko) 안전용지
AU2002361002B2 (en) Security element for security papers and valuable documents
EP2946942B1 (fr) Améliorations pour des dispositifs de sécurité
AU2014210898C1 (en) Security devices and methods of manufacture thereof
CN1622883A (zh) 对基片制造方法的改进
ZA200408360B (en) Security element and method for producing the same
AU741938B2 (en) Improvements in security documents and substrates therefor
GB2338679A (en) Substrates for security documents
EP3286013B1 (fr) Améliorations apportées à des substrats de sécurité
MXPA00012072A (en) Improvements in security documents and substrates therefor
MX2008001349A (en) Embedded watermark

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20001024

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT DE ES FR GB IT NL SE

AX Request for extension of the european patent

Free format text: RO PAYMENT 20001031

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20040102