EP2087170B1 - Sheet having a tactile effect and an interferential effect and security document comprising the same - Google Patents

Sheet having a tactile effect and an interferential effect and security document comprising the same Download PDF

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Publication number
EP2087170B1
EP2087170B1 EP07866532.0A EP07866532A EP2087170B1 EP 2087170 B1 EP2087170 B1 EP 2087170B1 EP 07866532 A EP07866532 A EP 07866532A EP 2087170 B1 EP2087170 B1 EP 2087170B1
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EP
European Patent Office
Prior art keywords
sheet
zone
interference effect
security
tactile
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
EP07866532.0A
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German (de)
French (fr)
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EP2087170A2 (en
Inventor
Nathalie Vast
Sébastien CHARIGNON
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.)
ArjoWiggins Security SAS
Original Assignee
ArjoWiggins Security SAS
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.)
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Publication date
Application filed by ArjoWiggins Security SAS filed Critical ArjoWiggins Security SAS
Priority to SI200731748T priority Critical patent/SI2087170T1/en
Priority to PL07866532T priority patent/PL2087170T3/en
Publication of EP2087170A2 publication Critical patent/EP2087170A2/en
Application granted granted Critical
Publication of EP2087170B1 publication Critical patent/EP2087170B1/en
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
    • 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
    • D21H21/44—Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods

Definitions

  • the invention relates to a sheet containing a securing means and an article incorporating such a sheet.
  • Substances with an interferential effect are widely used as security elements in the security document industry. Indeed, the substances with interference effect have the ability to change hue depending on the angle of observation and / or illumination. In particular, light-colored iridescent substances are used, in particular not very visible from certain angles. These are particularly difficult to copy by possible counterfeiters, their optically variable effect can not be reproduced by photocopy or scanner.
  • this arrangement has a disadvantage because the different colors chosen for the iridescent coating are not very noticeable in direct observation of so that the uninformed user, not perceiving the presence of the iridescent coating in direct observation (in front of him), can forget to check the presence of the latter in oblique observation to authenticate the paper.
  • a rough part of the invention is thus to produce a hardwood sheet comprising an interferential security element whose security properties are further enhanced.
  • Another object of the invention is to produce an article or a security document with an interferential security element, in particular a pale iridescent coating, which attracts the attention of the man who wants to authenticate said document .
  • a sheet comprising a support and a security means comprising at least one zone having an interference effect, characterized in that said security means further comprises at least one tactile recognition element situated in the same region that said zone having an interference effect.
  • the invention has the advantage that the tactile recognition element makes it possible to draw the attention of the user of the sheet to the region carrying said tactile recognition element, and thus to bring the user to check the presence of the interferential effect zones.
  • Another advantage of the invention is to combine in a single region the protection provided by the presence of an interference effect element with that provided by a tactile recognition element and thus to reinforce the level of securing of the sheet.
  • the part of the sheet containing the tactile recognition element and the part of the sheet containing the interference effect zone overlap completely.
  • the portion of the sheet containing the tactile recognition element and the portion of the sheet containing the interference effect zone overlap partially.
  • the tactile recognition element surrounds and delimits the interference effect zone.
  • the interference effect zone surrounds and delimits the tactile recognition element.
  • said tactile recognition element is on the surface of said interference effect zone and / or at least partially incorporated in the mass of said interference effect zone and / or is on the surface of said interference zone. support and / or at least partially incorporated in the mass of said support of the sheet.
  • the tactile recognition element is incorporated in the sheet support in the region where the interference effect area is located.
  • the security means and / or the interferential effect zone is a continuous band, for example, that the iridescent bands usually deposited on the surface of the banknotes, such as euros, which have a determined width and generally extend from one edge to the other of the bill.
  • the band has a width of between 0.5 and 4 cm, preferably between 0.5 and 2.5 cm.
  • the securing means and / or the interference effect zone form at least one pattern, in particular an alphanumeric character and / or a drawing and / or a symbol.
  • the securing means and / or the interferential effect zone in particular in the form of an iridescent band, has material gaps giving the interference and / or tactile effect, these gaps thus appearing in negative on the support.
  • Said gaps may form patterns, in particular an alphanumeric character and / or a drawing and / or a symbol.
  • the securing means represents at least one pattern having a fine structure.
  • Such a configuration by alternating a small distance between zones having a tactile effect and zones devoid of tactile effect, has the advantage of reinforcing the perception of the tactile effect of the security means.
  • they may be spaced lines, continuous or not, or a spiral with several turns.
  • the security means has the form of a square spiral inscribed in a square of 8 mm, the width of a turn being less than 0.4 mm and two contiguous turns being spaced about 0.9 mm.
  • the sheet comprises several patterns having a fine structure (chiseled) and which follow each other.
  • the patterns all have the same interference effect and therefore the same color variation according to the angle of observation and / or illumination.
  • the patterns have different interferential effects.
  • the security means may consist of several alphanumeric characters and symbols with different color variations so as to reproduce a logo.
  • the patterns may constitute a code, in particular readable by a machine.
  • the sheet has several patterns located in a manner marked with respect to said sheet.
  • the zone having an interference effect is pale, that is to say at least partially invisible at certain angles, especially in direct observation.
  • direct observation it is understood that the user holds the sheet substantially perpendicular to the direction of his gaze, that is to say facing him.
  • the sheet comprises a plurality of interferential zones of pale colors.
  • the zone having an interference effect comprises iridescent pigments as interferential elements.
  • said iridescent pigments are chosen from mother-of-pearl extracts, plastic pigments, micas-based pigments, and optionally lead salts, and mixtures thereof.
  • Suitable plastic pigments are, for example, those described in the application for WO 91/12146 and obtained by cutting a stack of plastic films such as two adjacent films that have different refractive indices.
  • said iridescent pigments are micas coated with at least one metal oxide, preferably a mica coated with titanium dioxide.
  • a mica coated with TiO 2 with optionally another metal oxide such as those sold by Merck AG under the name "Iriodin ®”.
  • an iridescent ink or coating composition comprising a binder, in particular a transparent binder selected for its ease of handling and the durability it provides to the binder-particle assembly once deposited, for example by screen printing or gravure printing.
  • the zone having an interference effect comprises, as interference elements, pigments or a film comprising one or more dielectric layers arranged between one or more reflecting metal layers.
  • the zone having an interference effect comprises, as interference element, a multilayer polymer film, formed by alternating reflecting layers, more or less intensely.
  • the zone having an interferential effect comprises, as interference elements, liquid crystals or pigments based on liquid crystals.
  • the tactile recognition element creates a relief on the surface of the support.
  • the tactile recognition element comprises particles partially incorporated in said interference effect zone and / or in the support of the sheet.
  • a security means having an interference effect on the surface of which particles "protrude”, that is to say form a relief on the surface of the securing means, thus giving a tactile effect to said securing means.
  • said particles are solid.
  • said particles are hollow.
  • said particles have a spherical, pyramidal, ovoid, polyhedral or similar shape.
  • the size of the particles is between 5 and 100 ⁇ m, preferably between 10 and 60 ⁇ m.
  • said particles are made of plastic, preferably polyester, polyethylene, polyamide, polypropylene or a mixture thereof.
  • said particles are made of metal, silica, glass or wax.
  • particles well resistant to intaglio printing are polyurethane particles with a diameter of between 27 and 35 microns, marketed by Daikin Chemical Europe, under the name "Daiplacoat ® RHC 230".
  • the skilled person can choose the material depending on the desired tactile effect, such as a smooth or rough feel.
  • a "rough" feel that is to say which the user perceives the reliefs in a particularly pronounced manner, can be obtained by incorporating into the interferential zone glass beads, such as those, of a diameter of 20 .mu.m, marketed by Sovitec under the name Microperl® 050-20-215.
  • a "soft" feel will be obtained by incorporating on the surface of the zone with interference effect expansible thermoplastic microspheres, such as those sold by the company Expancel under the name Expancel 820® and of a size between and 25 ⁇ m in the unexpanded state.
  • a "granular and soft" feel can be obtained by incorporating onto the surface of the interference zone medium polyurethane microbeads of about 7 ⁇ m, such as those sold under the name Daiplacoat® RHU 5070. by Dainishiseika.
  • the tactile recognition element is a knitted structure placed in the mass of the support, in particular a structure such that described in the application WO 2006016088 .
  • the tactile recognition element is a knitted structure composed of five metal and / or plastic wires, so as to form an English-coast type knit.
  • the tactile recognition element comprises at least one interference element having several regions of different thicknesses so as to create a difference in tactile perception from one region to another.
  • the interferential effect zone comprises, as interference elements, iridescent pigments
  • the variation in thickness of said interference effect zone also makes it possible to create a variation of the interferential effect, in particular the intensity of its coloration. .
  • the tactile recognition element may be arranged to form a pattern.
  • the tactile recognition element may be arranged to form at least one alphanumeric pattern, symbol or sign in Braille.
  • the tactile recognition element may be a structure composed of knitted yarns so as to obtain ribs in the form of letters.
  • the patterns of the tactile recognition element can be arranged to form a code, for example readable by a machine.
  • the tactile recognition element is a coating comprising a polymer used in the form of an aqueous dispersion, and has a glass transition temperature preferably of less than 5 ° C., such as a polyurethane or a copolymer based on (styrene-butadiene) giving a "rubbery" feel to the securing means.
  • said tactile recognition element formed of a coating having a rubbery effect has the shape of an elongate strip whose width is between 0.4 and 4 cm, preferably between 0.5 and 2,5cm.
  • said coating having a rubbery effect and said zone having an interference effect overlap exactly.
  • the security means comprises at least two different tactile recognition elements.
  • the security means may comprise an interference band comprising iridescent pigments as well as two adjacent tactile recognition elements superimposed on said interference band, the interference band having alternately a soft feel and a rough feel. .
  • the securing means of the sheet according to the invention comprises at least one additional security element, which further enhances the security level of the sheet.
  • said additional security element is situated exactly in the same zone as said interference effect zone and said tactile recognition element.
  • said additional security element may partially or completely cover the interference effect zone and / or the tactile recognition element without the additional security element hiding the interference effect of the security means.
  • the additional security element may be thermochromic, piezochromic, luminescent, in particular fluorescent or magnetic, for example in the form of an ink or a coating of pigments.
  • thermochromic piezochromic
  • luminescent in particular fluorescent or magnetic
  • the additional security means adapted to the nature of the interference zone and the tactile recognition element, so that said additional security means does not interfere with the interference effect or the tactile effect of the security means.
  • the tactile recognition element comprises particles as described above, and said particles convey security elements in their mass and / or on their surface such as luminescent pigments or plotters.
  • said particles are hollow and comprise at their center at least one security element such as a thermochromic element, photochromic or fluorescent.
  • the additional security element is preferably an invisible ink in white light and visible only under UV, such as a fluorescent ink deposited on the interference effect zone.
  • the sheet comprises at least one layer of fibrous material, in particular based on cellulosic fibers.
  • the support of the sheet comprises at least one layer of plastic material.
  • the sheet comprises at least one layer of fibrous material and at least one plastic layer, optionally at least partially superimposed.
  • the sheet may be of fibrous material, provided with an opening, so as to form a through window, said opening being covered by a layer of plastic material.
  • the invention also relates to a security document comprising the sheet described above.
  • the invention relates to a means of payment such as a bank note, a check or a restaurant ticket, an identity document such as an identity card, a driver's license, a passport page or a visa, a lottery ticket, a title deed, a ticket, a diploma or an entrance ticket to cultural or sports events.
  • the invention also relates to an article to be authenticated based on paper or plastic requiring security, such as a secure label or secure packaging including packaging for drugs or for food or for cosmetics or perfumes or for parts electronic or for spare parts, a sheet used in the medical or hospital field, including a paper used to make sterilization packaging, a playing card or a paper art.
  • a secure label or secure packaging including packaging for drugs or for food or for cosmetics or perfumes or for parts electronic or for spare parts
  • a sheet used in the medical or hospital field including a paper used to make sterilization packaging, a playing card or a paper art.
  • the invention also relates to an authentication method, a security document or an article to be authenticated as described above, of touching said document or article to check the presence of the security means by detecting the difference in tactile perception between said securing means and the rest of the support and / or between the different tactile patterns, if any, and observing the interference effect of said securing means. In this way, the man of the street can, by moving the document or the article, note the change of color of the security means.
  • the figure 1 represents a sectional view of a sheet (1) according to one embodiment of the invention.
  • the sheet (1) comprises a support (2) of fibrous material, based on cellulosic fibers, on which is located a securing means consisting of an interference effect zone and a tactile recognition element.
  • the interferential zone comprises iridescent pigments (6) with green / colorless interfering effect (Iriodin 231 ®) made of TiO 2 -coated mica , conveyed in a binder chosen for its ease of handling and the durability it provides to the environment. binder-particle assembly once applied, for example a crosslinkable polyurethane.
  • the tactile recognition element consists of polypropylene particles (7) of more or less spherical shape, with an average size of 30 .mu.m, incorporated into the mass of the interference effect zone.
  • the assembly comprising the iridescent pigments (6) and the particles (7) of polypropylene may for example be deposited by means such as screen printing on the rotating frame.
  • the figure 2 represents a sectional view of a sheet (1) according to another embodiment of the invention.
  • the sheet (1) according to this embodiment has a structure similar to that of the sheet presented to the figure 1 , the security means further comprising fluorescent pigments (8) incorporated in the mass of the interference effect zone. Such an embodiment makes it possible to further reinforce the level of securing of the sheet.
  • the man of the street will perceive, by touching the tactile zone, the zone with interference effect and will see the green / colorless passage of the latter according to the angle of observation.

Landscapes

  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Credit Cards Or The Like (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Laminated Bodies (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Gloves (AREA)
  • Facsimiles In General (AREA)

Description

L'invention concerne une feuille contenant un moyen de sécurisation et un article incorporant une telle feuille.The invention relates to a sheet containing a securing means and an article incorporating such a sheet.

Les substances à effet interférentiel, notamment les substances iridescentes, sont largement utilisées comme éléments de sécurisation dans l'industrie des documents de sécurité. En effet, les substances à effet interférentiel ont la faculté de changer de teinte selon l'angle d'observation et/ou d'illumination. En particulier, on utilise des substances iridescentes de couleur pâle, notamment peu visibles sous certains angles. Celles-ci sont particulièrement difficiles à copier par d'éventuels contrefacteurs, leur effet optiquement variable ne pouvant être reproduit par photocopie ou scanner.Substances with an interferential effect, especially iridescent substances, are widely used as security elements in the security document industry. Indeed, the substances with interference effect have the ability to change hue depending on the angle of observation and / or illumination. In particular, light-colored iridescent substances are used, in particular not very visible from certain angles. These are particularly difficult to copy by possible counterfeiters, their optically variable effect can not be reproduced by photocopy or scanner.

Néanmoins de telles substances à effet interférentiel, en particulier celles de couleur pâle, présentent un inconvénient en ce qu'elles n'attirent pas toujours l'attention des utilisateurs qui les manipulent. Dès lors, l'homme de la rue, n'ayant pas son attention attirée par cet élément de sécurisation risque d'oublier de vérifier sa présence. L'attention de l'utilisateur est d'autant moins attirée que la vue de ce dernier est faible. De plus, la proportion de la population âgée, donc avec une vue plus faible, augmentant, il devient donc de plus en plus nécessaire de fournir des éléments de sécurisation facilement repérables par des personnes voyantes mais présentant des défauts de vision.Nevertheless, such interferential substances, in particular those of pale color, have a disadvantage in that they do not always attract the attention of the users who handle them. Therefore, the man in the street, not having his attention attracted by this element of security may forget to check his presence. The attention of the user is all the less attracted that the view of the latter is weak. In addition, the proportion of the elderly population, so with a weaker view, increasing, it therefore becomes more and more necessary to provide security elements easily identifiable by sighted people but with vision defects.

D'autre part, devant la montée sans cesse croissante de la contrefaçon et des moyens dont disposent les faussaires, il existe un besoin constant d'amélioration des dispositifs de sécurisation des documents de sécurité.On the other hand, in view of the ever-increasing rise of counterfeiting and the means available to counterfeiters, there is a constant need to improve the security document security devices.

On connaît, par la demande EP 0 490 825 , un papier de sécurité qui présente à sa surface plusieurs zones iridescentes dont au moins l'une est quasiment invisible en observation directe et colorée sous un angle d'observation oblique. Afin d'obtenir une meilleure perception du changement de couleur, il est proposé qu'au moins deux régions du revêtement iridescent, de préférence voisines, soient de couleurs différentes, le contraste entre les couleurs devant permettre une meilleure détection.We know, by the request EP 0 490 825 , a security paper that has on its surface several iridescent zones, at least one of which is almost invisible in direct observation and colored at an angle of oblique observation. In order to obtain a better perception of the color change, it is proposed that at least two regions of the iridescent coating, preferably adjacent, are of different colors, the contrast between the colors to allow better detection.

Toutefois, cette disposition présente un inconvénient car les différentes couleurs choisies pour le revêtement iridescent sont peu perceptibles en observation directe de sorte que l'utilisateur non averti, ne percevant pas la présence du revêtement iridescent en observation directe (face à lui), peut oublier de vérifier la présence de ce dernier en observation oblique pour authentifier le papier.However, this arrangement has a disadvantage because the different colors chosen for the iridescent coating are not very noticeable in direct observation of so that the uninformed user, not perceiving the presence of the iridescent coating in direct observation (in front of him), can forget to check the presence of the latter in oblique observation to authenticate the paper.

On connait encore WO 03/097376 qui décrit des dispositifs permettant d'obtenir des interférence optiques.We still know WO 03/097376 which describes devices for obtaining optical interference.

On connaît encore JP 2005 085094 et WO 2004/030928 qui décrivent des dispositifs embossésWe still know JP 2005 085094 and WO 2004/030928 that describe embossed devices

Un brut de l'invention est donc de réaliser une feuillue comportant un élément de sécurisation à effet interférentiel dont les propriétés de sécurisation sont encore renforcées.A rough part of the invention is thus to produce a hardwood sheet comprising an interferential security element whose security properties are further enhanced.

Un autre but de l'invention est de réaliser un article ou un document de sécurité avec un élément de sécurisation à effet interférentiel, en particulier un couchage iridescent pâle, qui attire l'attention de l'homme de la rue qui veut authentifier ledit document.Another object of the invention is to produce an article or a security document with an interferential security element, in particular a pale iridescent coating, which attracts the attention of the man who wants to authenticate said document .

Ces différents buts sont atteints en fournissant une feuille comportant un support et un moyen de sécurisation comprenant an moins une zone présentant un effet interférentiel, caractérisée en ce que ledit moyen de sécurisation comporte en outre au moins un élément de reconnaissance tactile situé dans la même région que ladite zone présentant un effet interférentiel.These various objects are achieved by providing a sheet comprising a support and a security means comprising at least one zone having an interference effect, characterized in that said security means further comprises at least one tactile recognition element situated in the same region that said zone having an interference effect.

Ainsi, l'invention présente l'avantage que l'élément de reconnaissance tactile permet d'attirer l'attention de l'utilisateur de la feuille sur la région portant ledit élément de reconnaissance tactile, et ainsi d'amener l'utilisateur à vérifier la présence de la zones à effet interférentiel.Thus, the invention has the advantage that the tactile recognition element makes it possible to draw the attention of the user of the sheet to the region carrying said tactile recognition element, and thus to bring the user to check the presence of the interferential effect zones.

Un autre avantage de l'invention est de cumuler en une seule région la protection apportée par la présence d'un élément à effet interférentiel avec celle apportée par un élément de reconnaissance tactile et ainsi de renforcer le niveau de sécurisation de la feuille.Another advantage of the invention is to combine in a single region the protection provided by the presence of an interference effect element with that provided by a tactile recognition element and thus to reinforce the level of securing of the sheet.

Selon une mode de réalisation de l'invention, la partie de la feuille contenant l'élément de reconnaissance tactile et la partie de la feuille contenant la zone à effet interférentiel se recouvrent totalement.According to one embodiment of the invention, the part of the sheet containing the tactile recognition element and the part of the sheet containing the interference effect zone overlap completely.

Dans un autre mode de réalisation, la partie de la feuille contenant l'élément de reconnaissance tactile et la partie de la feuille contenant la zone à effet interférentiel se recoupent partiellement.In another embodiment, the portion of the sheet containing the tactile recognition element and the portion of the sheet containing the interference effect zone overlap partially.

Selon un autre mode de réalisation de l'invention, l'élément de reconnaissance tactile entoure et délimite la zone à effet interférentiel.According to another embodiment of the invention, the tactile recognition element surrounds and delimits the interference effect zone.

Selon un autre mode de réalisation de l'invention, la zone à effet interférentiel entoure et délimite l'élément de reconnaissance tactile.According to another embodiment of the invention, the interference effect zone surrounds and delimits the tactile recognition element.

Selon un mode de réalisation de l'invention, ledit élément de reconnaissance tactile se trouve à la surface de ladite zone à effet interférentiel et/ou au moins partiellement incorporé dans la masse de ladite zone à effet interférentiel et/ou est à la surface dudit support et/ou au moins partiellement incorporé dans la masse dudit support de la feuille. Par exemple, l'élément de reconnaissance tactile est incorporé dans le support de la feuille dans la région où est située la zone à effet interférentiel.According to one embodiment of the invention, said tactile recognition element is on the surface of said interference effect zone and / or at least partially incorporated in the mass of said interference effect zone and / or is on the surface of said interference zone. support and / or at least partially incorporated in the mass of said support of the sheet. For example, the tactile recognition element is incorporated in the sheet support in the region where the interference effect area is located.

Selon un mode de réalisation de l'invention, le moyen de sécurisation et/ou la zone à effet interférentiel est une bande continue telle, par exemple, que les bandes iridescentes habituellement déposées à la surface des billets de banque, tels que les euros, qui ont une largeur déterminée et s'étendent généralement d'un bord à l'autre du billet.According to one embodiment of the invention, the security means and / or the interferential effect zone is a continuous band, for example, that the iridescent bands usually deposited on the surface of the banknotes, such as euros, which have a determined width and generally extend from one edge to the other of the bill.

Plus particulièrement, la bande a une largeur comprise entre 0,5 et 4 cm, de préférence entre 0,5 et 2,5 cm.More particularly, the band has a width of between 0.5 and 4 cm, preferably between 0.5 and 2.5 cm.

Selon un autre mode de réalisation de l'invention, le moyen de sécurisation et/ou la zone à effet interférentiel forme au moins un motif, en particulier un caractère alphanumérique et/ou un dessin et/ou un symbole.According to another embodiment of the invention, the securing means and / or the interference effect zone form at least one pattern, in particular an alphanumeric character and / or a drawing and / or a symbol.

Selon un autre mode de réalisation de l'invention, le moyen de sécurisation et/ou la zone à effet interférentiel, en particulier sous la forme d'une bande iridescente, présente des manques de matière donnant l'effet interférentiel et/ou tactile, ces manques apparaissant ainsi en négatif sur le support. Lesdits manques peuvent former des motifs, en particulier un caractère alphanumérique et/ou un dessin et/ou un symbole.According to another embodiment of the invention, the securing means and / or the interferential effect zone, in particular in the form of an iridescent band, has material gaps giving the interference and / or tactile effect, these gaps thus appearing in negative on the support. Said gaps may form patterns, in particular an alphanumeric character and / or a drawing and / or a symbol.

Selon un mode de réalisation de l'invention, le moyen de sécurisation représente au moins un motif présentant une structure fine. Une telle configuration, par l'alternance sur une faible distance de zones présentant un effet tactile et de zones dépourvues d'effet tactile, présente l'avantage de renforcer la perception de l'effet tactile du moyen de sécurisation. Par exemple, il peut s'agir de lignes espacées, continues ou non, ou bien d'une spirale comportant plusieurs spires. Ainsi, selon un exemple particulier de l'invention, le moyen de sécurisation présente la forme d'une spirale carrée inscrite dans un carré de 8 mm de côté, la largeur d'une spire étant inférieure à 0,4 mm et deux spires contiguës étant espacées d'environ 0,9 mm.According to one embodiment of the invention, the securing means represents at least one pattern having a fine structure. Such a configuration, by alternating a small distance between zones having a tactile effect and zones devoid of tactile effect, has the advantage of reinforcing the perception of the tactile effect of the security means. For example, they may be spaced lines, continuous or not, or a spiral with several turns. Thus, according to a particular example of the invention, the security means has the form of a square spiral inscribed in a square of 8 mm, the width of a turn being less than 0.4 mm and two contiguous turns being spaced about 0.9 mm.

De préférence, afin de renforcer encore la perception de l'effet tactile, la feuille comprend plusieurs motifs présentant une structure fine (ciselée) et qui se suivent.Preferably, in order to further enhance the perception of the tactile effect, the sheet comprises several patterns having a fine structure (chiseled) and which follow each other.

Selon un cas particulier, les motifs présentent tous le même effet interférentiel donc la même variation de couleurs selon l'angle d'observation et/ou d'illumination.According to a particular case, the patterns all have the same interference effect and therefore the same color variation according to the angle of observation and / or illumination.

Selon un autre cas particulier, les motifs présentent des effets interférentiels différents. Ainsi, par exemple le moyen de sécurisation peut être constitué de plusieurs caractères alphanumériques et de symboles présentant différentes variations de couleurs de façon à reproduire un logo.In another particular case, the patterns have different interferential effects. Thus, for example the security means may consist of several alphanumeric characters and symbols with different color variations so as to reproduce a logo.

Selon un autre mode de réalisation, les motifs peuvent constituer un code, en particulier lisible par une machine.According to another embodiment, the patterns may constitute a code, in particular readable by a machine.

Selon un mode de réalisation de l'invention, la feuille présente plusieurs motifs situés de façon repérée par rapport à ladite feuille.According to one embodiment of the invention, the sheet has several patterns located in a manner marked with respect to said sheet.

Selon un mode de réalisation de l'invention, la zone présentant un effet interférentiel est pâle, c'est à dire au moins partiellement peu visible selon certains angles, notamment en observation directe. Par observation directe, on entend que l'utilisateur tient la feuille de façon sensiblement perpendiculaire à la direction de son regard, c'est à dire face à lui.According to one embodiment of the invention, the zone having an interference effect is pale, that is to say at least partially invisible at certain angles, especially in direct observation. By direct observation, it is understood that the user holds the sheet substantially perpendicular to the direction of his gaze, that is to say facing him.

Selon un mode de réalisation de l'invention, la feuille comprend plusieurs zones à effet interférentiel de couleurs pâles.According to one embodiment of the invention, the sheet comprises a plurality of interferential zones of pale colors.

Selon un mode de réalisation préféré de l'invention, la zone présentant un effet interférentiel comporte des pigments iridescents comme éléments interférentiels.According to a preferred embodiment of the invention, the zone having an interference effect comprises iridescent pigments as interferential elements.

De préférence, lesdits pigments iridescents sont choisis parmi les extraits de nacre, les pigments plastiques, les pigments à base de micas, éventuellement les sels de plomb et leurs mélanges.Preferably, said iridescent pigments are chosen from mother-of-pearl extracts, plastic pigments, micas-based pigments, and optionally lead salts, and mixtures thereof.

Des pigments plastiques adaptés sont, par exemple, ceux décrits dans la demande de brevet WO 91/12146 et obtenus par découpe d'un empilement de films plastiques tels que deux films adjacents qui ont des indices de réfraction différents.Suitable plastic pigments are, for example, those described in the application for WO 91/12146 and obtained by cutting a stack of plastic films such as two adjacent films that have different refractive indices.

En particulier, lesdits pigments iridescents sont des micas enrobés d'au moins un oxyde métallique, de préférence un mica enrobé de dioxyde de titane. Par exemple, on peut utiliser un mica enrobé de TiO2 avec le cas échéant un autre oxyde métallique, tels que ceux commercialisés par la société Merck AG sous le nom "Iriodin ®".In particular, said iridescent pigments are micas coated with at least one metal oxide, preferably a mica coated with titanium dioxide. For example, we can use a mica coated with TiO 2 with optionally another metal oxide, such as those sold by Merck AG under the name "Iriodin ®".

On utilise notamment une encre ou composition de couchage iridescente comprenant un liant, notamment transparent choisi pour sa facilité de manipulation et la durabilité qu'il procure à l'ensemble liant-particules une fois déposé, par exemple par sérigraphie ou héliogravure.In particular, an iridescent ink or coating composition comprising a binder, in particular a transparent binder selected for its ease of handling and the durability it provides to the binder-particle assembly once deposited, for example by screen printing or gravure printing.

Selon un autre mode de réalisation de l'invention, la zone présentant un effet interférentiel comprend, comme éléments interférentiels, des pigments ou un film comportant une ou plusieurs couches diélectriques disposées entre une ou plusieurs couches métalliques réfléchissantes.According to another embodiment of the invention, the zone having an interference effect comprises, as interference elements, pigments or a film comprising one or more dielectric layers arranged between one or more reflecting metal layers.

Selon un autre mode de réalisation de l'invention, la zone présentant un effet interférentiel comprend, comme élément interférentiel, un film multicouche polymère, formé par une alternance de couches réfléchissantes, plus ou moins intensément.According to another embodiment of the invention, the zone having an interference effect comprises, as interference element, a multilayer polymer film, formed by alternating reflecting layers, more or less intensely.

Selon un autre mode de réalisation de l'invention, la zone présentant un effet interférentiel comprend, comme éléments interférentiels, des cristaux liquides ou des pigments à base de cristaux liquides.According to another embodiment of the invention, the zone having an interferential effect comprises, as interference elements, liquid crystals or pigments based on liquid crystals.

Ces dernières substances présentant des effets interférentiels sont décrites, par exemple, dans la demande de brevet WO 01/60924 .The latter substances having interferential effects are described, for example, in the patent application WO 01/60924 .

Selon un mode de réalisation de l'invention, l'élément de reconnaissance tactile crée un relief à la surface du support.According to one embodiment of the invention, the tactile recognition element creates a relief on the surface of the support.

Selon un mode de réalisation particulier de l'invention, l'élément de reconnaissance tactile comprend des particules incorporées partiellement dans ladite zone à effet interférentiel et/ou dans le support de la feuille. De cette manière, on obtient un moyen de sécurisation présentant un effet interférentiel à la surface duquel des particules "dépassent", c'est à dire forment un relief à la surface du moyen de sécurisation, donnant ainsi un effet tactile audit moyen de sécurisation.According to a particular embodiment of the invention, the tactile recognition element comprises particles partially incorporated in said interference effect zone and / or in the support of the sheet. In this way, there is obtained a security means having an interference effect on the surface of which particles "protrude", that is to say form a relief on the surface of the securing means, thus giving a tactile effect to said securing means.

De préférence, lesdites particules sont pleines.Preferably, said particles are solid.

Selon un autre mode de réalisation, lesdites particules sont creuses.According to another embodiment, said particles are hollow.

En particulier, lesdites particules ont une forme sphérique, pyramidale, ovoïde, polyédrique ou similaire.In particular, said particles have a spherical, pyramidal, ovoid, polyhedral or similar shape.

Selon un mode de réalisation particulier, la taille des particules est comprise entre 5 et 100µm, de préférence entre 10 et 60µm.According to a particular embodiment, the size of the particles is between 5 and 100 μm, preferably between 10 and 60 μm.

Selon un mode de réalisation préféré, lesdites particules sont en plastique, de préférence en polyester, en polyéthylène, en polyamide, en polypropylène ou en un de leurs mélanges.According to a preferred embodiment, said particles are made of plastic, preferably polyester, polyethylene, polyamide, polypropylene or a mixture thereof.

Selon un autre mode de réalisation, lesdites particules sont en métal, en silice, en verre ou en cire.According to another embodiment, said particles are made of metal, silica, glass or wax.

De façon générale, l'homme du métier choisira un matériau présentant une dureté et/ou une élasticité suffisante pour que les particules soient perceptibles après les traitements que sera amenée à subir la feuille comportant le moyen de sécurisation selon l'invention, notamment une impression en taille douce durant laquelle une pression élevée, généralement supérieure à 2×107 Pa (200 bars) est appliquée sur la feuille. Par exemple, des particules résistant bien à l'impression en taille douce sont les particules de polyuréthane d'un diamètre compris entre 27 et 35 µm, commercialisées par Daikin Chemical Europe, sous le nom de "Daiplacoat ® RHC 230".In general, those skilled in the art will choose a material having sufficient hardness and / or elasticity so that the particles are perceptible after the treatments that will be subjected to the sheet comprising the securing means according to the invention, including printing in intaglio where a high pressure, generally greater than 2 × 10 7 Pa (200 bar) is applied to the sheet. For example, particles well resistant to intaglio printing are polyurethane particles with a diameter of between 27 and 35 microns, marketed by Daikin Chemical Europe, under the name "Daiplacoat ® RHC 230".

En outre, l'homme du métier pourra choisir le matériau en fonction de l'effet tactile recherché, tel qu'un toucher lisse ou rugueux.In addition, the skilled person can choose the material depending on the desired tactile effect, such as a smooth or rough feel.

Selon un exemple préféré, un toucher "rugueux", c'est à dire dont l'utilisateur perçoit les reliefs de façon particulièrement prononcée, pourra être obtenu en incorporant dans la zone à effet interférentiel des billes de verre, telles que celles, d'un diamètre de 20µm, commercialisées par la société Sovitec sous le nom Microperl ® 050-20-215.According to a preferred example, a "rough" feel, that is to say which the user perceives the reliefs in a particularly pronounced manner, can be obtained by incorporating into the interferential zone glass beads, such as those, of a diameter of 20 .mu.m, marketed by Sovitec under the name Microperl® 050-20-215.

Selon un autre exemple, on obtiendra un toucher "doux" en incorporant à la surface de la zone à effet interférentiel des microsphères thermoplastiques expansibles, telles que celles commercialisées par la société Expancel sous le nom Expancel 820 ® et d'une taille comprise entre 10 et 25 µm à l'état non expansé.According to another example, a "soft" feel will be obtained by incorporating on the surface of the zone with interference effect expansible thermoplastic microspheres, such as those sold by the company Expancel under the name Expancel 820® and of a size between and 25 μm in the unexpanded state.

Selon un autre exemple, un toucher "granuleux et doux" peut être obtenu en incorporant à la surface de la zone à effet interférentiel des microbilles de polyuréthane de taille moyenne environ égale à 7 µm, telles que celles commercialisées sous le nom Daiplacoat ® RHU 5070 par Dainishiseika.According to another example, a "granular and soft" feel can be obtained by incorporating onto the surface of the interference zone medium polyurethane microbeads of about 7 μm, such as those sold under the name Daiplacoat® RHU 5070. by Dainishiseika.

Selon un autre mode de réalisation, l'élément de reconnaissance tactile est une structure tricotée placée dans la masse du support, en particulier une structure telle que décrite dans la demande WO 2006016088 . Par exemple, l'élément de reconnaissance tactile est une structure tricotée composée de cinq fils en métal et/ou en matière plastique, de façon à former un tricot de type côte anglaise.According to another embodiment, the tactile recognition element is a knitted structure placed in the mass of the support, in particular a structure such that described in the application WO 2006016088 . For example, the tactile recognition element is a knitted structure composed of five metal and / or plastic wires, so as to form an English-coast type knit.

Selon un autre mode de réalisation de l'invention, l'élément de reconnaissance tactile comprend au moins un élément à effet interférentiel présentant plusieurs régions d'épaisseurs différentes de manière à créer une différence de perception tactile d'une région à l'autre. En particulier, lorsque la zone à effet interférentiel comprend, comme éléments interférentiels, des pigments iridescents, la variation d'épaisseur de ladite zone à effet interférentiel permet également de créer une variation de l'effet interférentiel, notamment de l'intensité de sa coloration.According to another embodiment of the invention, the tactile recognition element comprises at least one interference element having several regions of different thicknesses so as to create a difference in tactile perception from one region to another. In particular, when the interferential effect zone comprises, as interference elements, iridescent pigments, the variation in thickness of said interference effect zone also makes it possible to create a variation of the interferential effect, in particular the intensity of its coloration. .

Selon un mode de réalisation de l'invention, l'élément de reconnaissance tactile peut être agencé de manière à former un motif. En particulier, l'élément de reconnaissance tactile peut être agencé de sorte à former au moins un motif alphanumérique, symbole ou signe en braille. Par exemple, l'élément de reconnaissance tactile peut être une structure composée de fils tricotés de sorte à obtenir des côtes ayant la forme de lettres.According to one embodiment of the invention, the tactile recognition element may be arranged to form a pattern. In particular, the tactile recognition element may be arranged to form at least one alphanumeric pattern, symbol or sign in Braille. For example, the tactile recognition element may be a structure composed of knitted yarns so as to obtain ribs in the form of letters.

Selon un cas particulier de l'invention, les motifs de l'élément de reconnaissance tactile peuvent être agencés de manière à former un code, par exemple lisible par une machine.According to a particular case of the invention, the patterns of the tactile recognition element can be arranged to form a code, for example readable by a machine.

Selon un autre mode de réalisation de l'invention, l'élément de reconnaissance tactile est un revêtement comprenant un polymère utilisé sous forme de dispersion aqueuse, et présentent une température de transition vitreuse de préférence inférieure à 5°C, tel qu'un polyuréthane ou un copolymère à base de (styrène-butadiène) donnant un toucher "caoutchouteux" au moyen de sécurisation.According to another embodiment of the invention, the tactile recognition element is a coating comprising a polymer used in the form of an aqueous dispersion, and has a glass transition temperature preferably of less than 5 ° C., such as a polyurethane or a copolymer based on (styrene-butadiene) giving a "rubbery" feel to the securing means.

Selon un mode de réalisation de l'invention, ledit élément de reconnaissance tactile formé d'un revêtement présentant un effet caoutchouteux a la forme d'une bande allongée dont la largeur est comprise entre 0,4 et 4cm, de préférence entre 0,5 et 2,5cm.According to one embodiment of the invention, said tactile recognition element formed of a coating having a rubbery effect has the shape of an elongate strip whose width is between 0.4 and 4 cm, preferably between 0.5 and 2,5cm.

De préférence, ledit revêtement présentant un effet caoutchouteux et ladite zone présentant un effet interférentiel se recouvrent exactement.Preferably, said coating having a rubbery effect and said zone having an interference effect overlap exactly.

Selon un mode de réalisation de l'invention, le moyen de sécurisation comprend au moins deux éléments de reconnaissance tactile différents. Un tel mode de réalisation est particulièrement avantageux en ce qu'il permet, par le contraste entre les différents touchers, de renforcer encore la facilité de perception dudit moyen de sécurisation. Par exemple, le moyen de sécurisation peut comprendre une bande à effet interférentiel comprenant des pigments iridescents ainsi que deux éléments de reconnaissance tactile contigus et se superposant à ladite bande à effet interférentiel, la bande à effet interférentiel présentant alternativement un toucher doux et un toucher rugueux.According to one embodiment of the invention, the security means comprises at least two different tactile recognition elements. Such an embodiment is particularly advantageous in that it allows, by the contrast between the different touches, to further enhance the ease of perception of said securing means. For example, the security means may comprise an interference band comprising iridescent pigments as well as two adjacent tactile recognition elements superimposed on said interference band, the interference band having alternately a soft feel and a rough feel. .

De façon générale, lorsque l'élément de reconnaissance tactile est placé sur la zone à effet interférentiel, l'effet de cette dernière ne doit pas être caché par l'élément de reconnaissance tactile.In general, when the tactile recognition element is placed on the interference effect zone, the effect of the latter must not be hidden by the tactile recognition element.

Selon un mode de réalisation, le moyen de sécurisation de la feuille selon l'invention comprend au moins un élément de sécurité supplémentaire, ce qui permet de renforcer encore le niveau de sécurisation de la feuille. En particulier, ledit élément de sécurité supplémentaire est situé exactement dans la même zone que ladite zone à effet interférentiel et ledit élément de reconnaissance tactile.According to one embodiment, the securing means of the sheet according to the invention comprises at least one additional security element, which further enhances the security level of the sheet. In particular, said additional security element is situated exactly in the same zone as said interference effect zone and said tactile recognition element.

Selon un mode de réalisation, ledit élément de sécurité supplémentaire peut recouvrir partiellement ou totalement la zone à effet interférentiel et/ou l'élément de reconnaissance tactile sans toutefois que l'élément de sécurité supplémentaire ne cache l'effet interférentiel du moyen de sécurisation.According to one embodiment, said additional security element may partially or completely cover the interference effect zone and / or the tactile recognition element without the additional security element hiding the interference effect of the security means.

Selon un mode de réalisation de l'invention, l'élément de sécurité supplémentaire peut être thermochrome, piezochrome, luminescent, en particulier fluorescent ou encore magnétique, sous forme par exemple d'une encre ou un couchage de pigments. L'homme du métier choisira le moyen de sécurité supplémentaire adapté à la nature de la zone à effet interférentiel et de l'élément de reconnaissance tactile, de sorte que ledit moyen de sécurité supplémentaire ne nuise ni à l'effet interférentiel ni à l'effet tactile du moyen de sécurisation.According to one embodiment of the invention, the additional security element may be thermochromic, piezochromic, luminescent, in particular fluorescent or magnetic, for example in the form of an ink or a coating of pigments. Those skilled in the art will choose the additional security means adapted to the nature of the interference zone and the tactile recognition element, so that said additional security means does not interfere with the interference effect or the tactile effect of the security means.

Selon un mode de réalisation particulier de l'invention, l'élément de reconnaissance tactile comprend des particules comme décrites ci-dessus, et lesdites particules véhiculent des éléments de sécurité dans leur masse et/ou à leur surface tels que des pigments luminescents ou des traceurs.According to one particular embodiment of the invention, the tactile recognition element comprises particles as described above, and said particles convey security elements in their mass and / or on their surface such as luminescent pigments or plotters.

Selon un autre exemple, lesdites particules sont creuses et comprennent en leur centre au moins un élément de sécurité tel qu'un élément thermochrome, photochrome ou fluorescent.In another example, said particles are hollow and comprise at their center at least one security element such as a thermochromic element, photochromic or fluorescent.

Selon un mode de réalisation préféré, l'élément de sécurité supplémentaire est de préférence une encre invisible en lumière blanche et visible seulement sous UV, telle qu'une encre fluorescente déposée sur la zone à effet interférentiel.According to a preferred embodiment, the additional security element is preferably an invisible ink in white light and visible only under UV, such as a fluorescent ink deposited on the interference effect zone.

Selon un mode de réalisation préféré de l'invention, la feuille comporte au moins une couche de matière fibreuse notamment à base de fibres cellulosiques.According to a preferred embodiment of the invention, the sheet comprises at least one layer of fibrous material, in particular based on cellulosic fibers.

Selon un autre mode de réalisation, le support de la feuille comporte au moins une couche de matière plastique.According to another embodiment, the support of the sheet comprises at least one layer of plastic material.

Selon un autre mode de réalisation de l'invention, la feuille comporte à la fois au moins une couche de matière fibreuse et au moins une couche de matière plastique, éventuellement superposées au moins partiellement. Par exemple, la feuille peut être en matière fibreuse, munie d'une ouverture, de façon à former une fenêtre traversante, ladite ouverture étant recouverte par une couche de matière plastique.According to another embodiment of the invention, the sheet comprises at least one layer of fibrous material and at least one plastic layer, optionally at least partially superimposed. For example, the sheet may be of fibrous material, provided with an opening, so as to form a through window, said opening being covered by a layer of plastic material.

L'invention concerne également un document de sécurité comprenant la feuille décrite ci-dessus. En particulier, l'invention concerne un moyen de paiement tel qu'un billet de banque, un chèque ou un ticket restaurant, un document d'identité tel qu'une carte d'identité, un permis de conduire, une page de passeport ou un visa, un ticket de loterie, un titre de propriété, un titre de transport, un diplôme ou un ticket d'entrée à des manifestations culturelles ou sportives.The invention also relates to a security document comprising the sheet described above. In particular, the invention relates to a means of payment such as a bank note, a check or a restaurant ticket, an identity document such as an identity card, a driver's license, a passport page or a visa, a lottery ticket, a title deed, a ticket, a diploma or an entrance ticket to cultural or sports events.

L'invention concerne aussi un article à authentifier à base de papier ou de plastique nécessitant une sécurisation, tel qu'une étiquette sécurisée ou un emballage sécurisé notamment un emballage pour les médicaments ou pour des aliments ou pour des cosmétiques ou parfums ou pour des pièces électroniques ou pour des pièces détachées, une feuille utilisée dans le domaine médical ou hospitalier, notamment un papier utilisé pour faire des emballages de stérilisation, une carte à jouer ou encore un papier d'art.The invention also relates to an article to be authenticated based on paper or plastic requiring security, such as a secure label or secure packaging including packaging for drugs or for food or for cosmetics or perfumes or for parts electronic or for spare parts, a sheet used in the medical or hospital field, including a paper used to make sterilization packaging, a playing card or a paper art.

L'invention concerne également une méthode d'authentification, d'un document de sécurité ou d'un article à authentifier tels que décrits ci-dessus, consistant à toucher ledit document ou article pour vérifier la présence du moyen de sécurisation en détectant la différence de perception tactile entre ledit moyen de sécurisation et le reste du support et/ou entre les différents motifs tactiles, le cas échéant et à observer l'effet interférentiel dudit moyen de sécurisation. De cette manière, l'homme de la rue peut, en bougeant le document ou l'article, constater le changement de couleur du moyen de sécurisation.The invention also relates to an authentication method, a security document or an article to be authenticated as described above, of touching said document or article to check the presence of the security means by detecting the difference in tactile perception between said securing means and the rest of the support and / or between the different tactile patterns, if any, and observing the interference effect of said securing means. In this way, the man of the street can, by moving the document or the article, note the change of color of the security means.

L'invention va maintenant être décrite plus en détail à l'aide du dessin annexé dans lequel :

  • la figure 1 représente une vue en coupe d'une feuille selon un mode de réalisation de l'invention
  • la figure 2 représente une vue en coupe d'une feuille selon un autre mode de réalisation de l'invention
The invention will now be described in more detail with the aid of the accompanying drawing in which:
  • the figure 1 represents a sectional view of a sheet according to one embodiment of the invention
  • the figure 2 represents a sectional view of a sheet according to another embodiment of the invention

La figure 1 représente une vue en coupe d'une feuille (1) selon un mode de réalisation de l'invention. La feuille (1) comprend un support (2) en matière fibreuse, à base de fibres cellulosiques, sur lequel est situé un moyen de sécurisation constitué d'une zone à effet interférentiel et d'un élément de reconnaissance tactile. La zone à effet interférentiel comprend des pigments irisés (6) à effet interférentiel vert/incolore (Iriodin 231 ®) constitués de mica enrobé de TiO2, véhiculés dans un liant choisi pour sa facilité de manipulation et la durabilité qu'il procure à l'ensemble liant-particules une fois appliqué, par exemple un polyuréthane réticulable. L'élément de reconnaissance tactile est constitué de particules (7) de polypropylène de forme plus ou moins sphérique, d'une taille moyenne de 30µm, incorporées dans la masse de la zone à effet interférentiel. L'ensemble comportant les pigments irisés (6) ainsi que les particules (7) de polypropylène peut par exemple être déposé par des moyens tels que la sérigraphie au cadre rotatif.The figure 1 represents a sectional view of a sheet (1) according to one embodiment of the invention. The sheet (1) comprises a support (2) of fibrous material, based on cellulosic fibers, on which is located a securing means consisting of an interference effect zone and a tactile recognition element. The interferential zone comprises iridescent pigments (6) with green / colorless interfering effect (Iriodin 231 ®) made of TiO 2 -coated mica , conveyed in a binder chosen for its ease of handling and the durability it provides to the environment. binder-particle assembly once applied, for example a crosslinkable polyurethane. The tactile recognition element consists of polypropylene particles (7) of more or less spherical shape, with an average size of 30 .mu.m, incorporated into the mass of the interference effect zone. The assembly comprising the iridescent pigments (6) and the particles (7) of polypropylene may for example be deposited by means such as screen printing on the rotating frame.

La figure 2 représente une vue en coupe d'une feuille (1) selon un autre mode de réalisation de l'invention. La feuille (1) selon ce mode de réalisation présente une structure semblable à celle de la feuille présentée à la figure 1, le moyen de sécurisation comprenant en outre des pigments fluorescents (8) incorporés dans la masse de la zone à effet interférentiel. Un tel mode de réalisation permet de renforcer encore le niveau de sécurisation de la feuille.The figure 2 represents a sectional view of a sheet (1) according to another embodiment of the invention. The sheet (1) according to this embodiment has a structure similar to that of the sheet presented to the figure 1 , the security means further comprising fluorescent pigments (8) incorporated in the mass of the interference effect zone. Such an embodiment makes it possible to further reinforce the level of securing of the sheet.

L'homme de la rue percevra, en touchant la zone tactile, la zone à effet interférentiel et verra le passage vert/incolore de cette dernière selon l'angle d'observation.The man of the street will perceive, by touching the tactile zone, the zone with interference effect and will see the green / colorless passage of the latter according to the angle of observation.

Claims (15)

  1. A sheet (1) comprising a support (2) and a security means comprising at least one zone having an interference effect, characterized in that said security means also comprises at least one tactile recognition element located in the same region as said zone having an interference effect.
  2. The sheet (1) as claimed in the preceding claim, characterized in that said zone having an interference effect is at least partially not very visible at certain angles, especially by direct observation.
  3. The sheet (1) as claimed in one of the preceding claims, characterized in that said tactile recognition element and said zone having an interference effect partially overlap.
  4. The sheet (1) as claimed in one of the preceding claims 1 and 2, characterized in that said tactile recognition element and said zone having an interference effect completely overlap.
  5. The sheet (1) as claimed in one of the preceding claims, characterized in that said tactile recognition element is positioned at the surface of said zone having an interference effect and/or is at least partially incorporated into the bulk of said zone having an interference effect and/or is at the surface of said support (2) and/or at least partially incorporated into the bulk of said support (2) for the sheet (1).
  6. The sheet (1) as claimed in one of the preceding claims, characterized in that said zone having an interference effect and/or the tactile recognition element is in the form of a continuous strip having a width between 0.5 and 4 cm, or patterns, especially that can be read by a machine.
  7. The sheet (1) as claimed in one of claims 1 to 6, characterized in that said security means have missing material, especially in the form of an alphanumeric pattern and/or a design and/or a symbol, in particular that can be read by a machine.
  8. The sheet (1) as claimed in one of the preceding claims, characterized in that said zone having an interference effect comprises, as interference elements, iridescent pigments (6), especially chosen from mother-of-pearl extracts, plastic pigments and pigments based on micas and mixtures thereof, and preferably a mica coated with titanium dioxide, and/or liquid crystals, in particular pigments based on liquid crystals and/or a film comprising one or more dielectric layers positioned between one or more reflective metallic layers.
  9. The sheet (1) as claimed in any one of the preceding claims, characterized in that the tactile recognition element comprises particles (7) partially incorporated into said zone having an interference effect and/or into the support (2) for the sheet (1), the size of said particles (7) is between 5 and 100 µm, preferably between 10 and 60 µm.
  10. The sheet (1) as claimed in claim 9, characterized in that said particles (7) are made of a plastic material, of glass, metal, silica or wax.
  11. The sheet (1) as claimed in one of the preceding claims, characterized in that the tactile recognition element comprises a knitted structure.
  12. The sheet (1) as claimed in one of the preceding claims, characterized in that said security means comprises at least two tactile recognition elements having different tactile effects.
  13. The sheet (1) as claimed in one of the preceding claims, characterized in that the security means is equipped with an additional security element, that is thermochromic, piezochromic, magnetic or luminescent, in particular fluorescent (8).
  14. A security document, or article to be authenticated characterized in that it comprises a sheet (1) as described in one of the preceding claims, said document or article being in particular selected among a means of payment such as a bank note, a check or a restaurant ticket, an identity document such as an identity card, a driving license, a passport page or a visa, a lottery ticket, a title deed, a transport ticket, a diploma or an entrance ticket to a cultural or sporting event, a security-protected label or a security-protected package for medication or for foodstuffs or for cosmetics or fragrances or for electronic parts or for spare parts.
  15. A method for authenticating a security document or an article to be authenticated as described in one of claims 1 to 13, comprising the s t e p that consists in touching said document or article to verify the presence of the security means by detecting the difference in tactile perception between said security means and the rest of the support (2) and/or between the various tactile patterns, and in observing the interference effect of said security means.
EP07866532.0A 2006-10-31 2007-10-31 Sheet having a tactile effect and an interferential effect and security document comprising the same Active EP2087170B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI200731748T SI2087170T1 (en) 2006-10-31 2007-10-31 Sheet having a tactile effect and an interferential effect and security document comprising the same
PL07866532T PL2087170T3 (en) 2006-10-31 2007-10-31 Sheet having a tactile effect and an interferential effect and security document comprising the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0609551A FR2907808B1 (en) 2006-10-31 2006-10-31 SHEET HAVING A TOUCH EFFECT AND AN INTERFERENTIAL EFFECT AND SECURITY DOCUMENT COMPRISING SAME
PCT/FR2007/052291 WO2008053130A2 (en) 2006-10-31 2007-10-31 Sheet having a tactile effect and an interferential effect and security document comprising the same

Publications (2)

Publication Number Publication Date
EP2087170A2 EP2087170A2 (en) 2009-08-12
EP2087170B1 true EP2087170B1 (en) 2015-12-09

Family

ID=38345982

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07866532.0A Active EP2087170B1 (en) 2006-10-31 2007-10-31 Sheet having a tactile effect and an interferential effect and security document comprising the same

Country Status (10)

Country Link
US (1) US9512570B2 (en)
EP (1) EP2087170B1 (en)
BR (1) BRPI0718143B1 (en)
CA (1) CA2667645C (en)
ES (1) ES2563496T3 (en)
FR (1) FR2907808B1 (en)
HU (1) HUE028248T2 (en)
PL (1) PL2087170T3 (en)
SI (1) SI2087170T1 (en)
WO (1) WO2008053130A2 (en)

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GB2457949B (en) * 2008-02-29 2010-05-12 Rue De Int Ltd Security documents
IL215655B (en) * 2011-10-10 2018-05-31 Amnis Therapeutics Ltd System for retrieving and anchoring a corpus
KR102019531B1 (en) 2012-06-11 2019-09-06 시크파 홀딩 에스에이 Methods for printing tactile security features
FR2992410A1 (en) 2012-06-26 2013-12-27 Arjowiggins Security ARTICLE COMPRISING A BAR CODE WITH ELECTROMAGNETIC SIGNATURE.
FR3018085A1 (en) * 2014-02-28 2015-09-04 Arjowiggins Security TACTILE SAFETY ELEMENT
AU2016100401B4 (en) * 2016-04-13 2017-02-09 Ccl Secure Pty Ltd Micro-optic device with double sided optical effect
AU2018271143B2 (en) * 2017-05-17 2023-05-11 Ccl Secure Pty Ltd A banknote and a method of producing a banknote
DE102021124407A1 (en) * 2021-09-21 2023-03-23 Leonhard Kurz Stiftung & Co. Kg Thermochromic security element and method for producing a thermochromic security element

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FR2657816B1 (en) * 1990-02-06 1992-12-11 Arjomari Prioux DECORATIVE SHEETS WHICH CAN BE USED IN PARTICULAR FOR THE MANUFACTURE OF LAMINATE PANELS AND INCLUDING METALLIC OR IRIDESCENT FLAKES.
EP0490825B1 (en) 1990-12-12 1995-03-15 - Sihl - Zürcher Papierfabrik An Der Sihl Security paper for banknotes or the same, and method for their manufacture
JP2905712B2 (en) * 1995-02-28 1999-06-14 科学技術振興事業団 Opal-like diffraction coloring film
US6791649B1 (en) * 1999-09-28 2004-09-14 Fuji Photo Film Co., Ltd. Anti-reflection film, polarizing plate comprising the same, and image display device using the anti-reflection film or the polarizing plate
JP2003520986A (en) * 2000-01-21 2003-07-08 フレックス プロダクツ インコーポレイテッド Optical modulation security device
US6695905B2 (en) 2000-02-16 2004-02-24 Sicpa Holding S.A. Pigments having a viewing angle dependent shift of color, method for producing said pigments, use of said pigments in security applications, coating composition comprising said pigments and a detecting device
US6656319B1 (en) * 2000-10-25 2003-12-02 3M Innovative Properties Company Fluid-activatable adhesive articles and methods
WO2003097376A1 (en) * 2002-05-21 2003-11-27 Commonwealth Scientific And Industrial Research Organisation Optically variable devices
EP1549505A4 (en) * 2002-10-07 2006-04-19 Note Printing Au Ltd Embossed optically variable devices
JP4487521B2 (en) * 2003-09-10 2010-06-23 凸版印刷株式会社 Anti-counterfeit media and anti-counterfeit seal
FR2873134B1 (en) * 2004-07-15 2011-07-15 Arjowiggins KNITTED STRUCTURE INTENDED TO BE INCORPORATED IN SHEET MATERIAL AND SHEET MATERIAL INCORPORATING SUCH A STRUCTURE
US7623624B2 (en) * 2005-11-22 2009-11-24 Illumina, Inc. Method and apparatus for labeling using optical identification elements characterized by X-ray diffraction
EP1832439B1 (en) * 2006-03-06 2014-04-23 JDS Uniphase Corporation Article having an optical effect

Also Published As

Publication number Publication date
HUE028248T2 (en) 2016-12-28
EP2087170A2 (en) 2009-08-12
US9512570B2 (en) 2016-12-06
WO2008053130A2 (en) 2008-05-08
SI2087170T1 (en) 2016-04-29
BRPI0718143A2 (en) 2013-11-05
CA2667645A1 (en) 2008-05-08
US20100002303A1 (en) 2010-01-07
ES2563496T3 (en) 2016-03-15
FR2907808A1 (en) 2008-05-02
PL2087170T3 (en) 2016-06-30
WO2008053130A3 (en) 2008-06-26
BRPI0718143B1 (en) 2018-02-06
FR2907808B1 (en) 2009-01-16
CA2667645C (en) 2016-06-07

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