EP1985753A1 - Sheet of fibrous material comprising an annular window and method of manufacturing same - Google Patents

Sheet of fibrous material comprising an annular window and method of manufacturing same Download PDF

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Publication number
EP1985753A1
EP1985753A1 EP08290269A EP08290269A EP1985753A1 EP 1985753 A1 EP1985753 A1 EP 1985753A1 EP 08290269 A EP08290269 A EP 08290269A EP 08290269 A EP08290269 A EP 08290269A EP 1985753 A1 EP1985753 A1 EP 1985753A1
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EP
European Patent Office
Prior art keywords
fibrous material
annular
edge
sheet
film
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Granted
Application number
EP08290269A
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German (de)
French (fr)
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EP1985753B1 (en
Inventor
Frédéric Beauchet
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Banque de France
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Banque de France
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Publication of EP1985753A1 publication Critical patent/EP1985753A1/en
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/44—Watermarking devices
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/06—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the cylinder type
    • D21F11/08—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the cylinder type paper or board consisting of two or more layers
    • 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

Definitions

  • the present invention relates to a sheet of fibrous material comprising a window formed by a film segment and a method of producing this sheet.
  • Various methods for making a window in a sheet of fibrous material are known, in particular by using a film segment having an edge having a closed contour trapped in a layer of fibrous material or adhered to the layer of fibrous material.
  • the window is generally of a simple geometrical shape so that even when the authentic window is made by a segment of film whose edge is trapped in the fibrous material, it is possible for a fraudster to do so. illusion by making a cut in a sheet of fibrous material and then by bonding a segment of film having dimensions greater than the window and whose edges are applied on the periphery of the window on one side of the sheet of material fibrous.
  • the object of the invention is to provide a sheet of fibrous material having a window whose shape is easily identifiable while having increased difficulty of reproduction by a fraudster.
  • a fibrous sheet having a window formed by an annular film segment having an inner edge and an outer edge trapped in the fibrous material is provided according to the invention.
  • the fibrous material trapping the inner edge of the annular film segment then constitutes an island of fibrous material having an easily identifiable appearance and clearly distinguishable from the appearance of a segment of fibrous material reported on a film.
  • the annular film segment comprises perforations or a serrated edge along at least one edge. This improves the tear resistance of the film segment forming the window or the central island of fibrous material.
  • this relates to a process for producing a sheet of fibrous material comprising a window, the method comprising the steps of partially immersing in a fiber bath a porous form comprising annular masks in relief, successively deposit on the masks annular film segments having edges protruding masks in relief, and ensure the formation of a fibrous layer until the inner and outer edges of the film segment are trapped in the fibrous layer.
  • the process according to the invention uses, in a manner known per se, a porous form 1 partially immersed in a fiber bath 2 and driven in rotation while maintaining the liquid level inside the form 1 at a level lower than that bath 2.
  • the porous form 1 comprises annular relief masks 3.
  • the masks 3 are made in a manner known per se by stamping the fabric of the porous form 1.
  • Annular film segments 4 carried by a support band 5 are successively applied to a mask 3 while it is outside the fiber bath 2. It should be noted in this connection that in the case where the annular portion of the mask 3 is porous, the film segment 4 can be maintained applied to the mask 3 by a slight depression created inside the shape 1. In the case where the mask 3 has an annular portion sealed, for example by a varnish, it has been found that the film segment 4 is kept pressed against the mask 3 by the surface tension forces resulting from the film of liquid which remains on the surface of the masks during the rotation of the shape 1.
  • the film segment 4 can also be held in place by an adhesive having a low tack or by a water-soluble adhesive.
  • the film segments 4 have appropriate dimensions so that the inner edge and the outer edge of the annular film segment protrude from the annular portion of the masks 3.
  • the annular film segments 4 have perforations 8 along the inner edge 6 and along the outer edge 7.
  • fibers are deposited on the porous part of the shape 1 by surrounding the masks 3 and by filling the porous central portion 16 of the masks 13, firstly below the projecting edges of the film segments 4 and then above them to form a layer of fibers 9 trapping the inner edge 6 and the edge outside 7 of the annular film segment 4 and thus producing an annular window 10 visible on either side of the sheet of fibrous material and delimiting a central island 11 connected to the rest of the sheet of fibrous material by the segment of annular film 4 .
  • the film segment 12 has serrated toothed edges 13 made both along the inner edge and the outer edge of the film segment 12.
  • the annular portion of the mask 3 has been represented by lines or dashes.
  • the inner and outer edges of the film segment 14 are serrated according to triangular teeth 15.
  • the illustrated film segments are generally circular in shape, annular film segments having any shape may be formed. geometric or not allowing easy identification of the sheet of fibrous material by the shape of the window made.
  • the inner edge and the outer edge may have different shapes from each other.
  • the window thus produced it is also possible to use, in a manner known per se, the window thus produced to obtain particular visual effects, whether these are of optical and / or chromatic order, in particular by using more or less transparent film segments in function desired effects.
  • masks have been illustrated as embossed areas of the porous form, masks reported on the porous form can also be used. Non-adherent or hydrophobic substances can also be deposited on the masks, avoiding any deposit of fibers on the masks.
  • the sheet of fibrous material is made by means of a single porous form, it can be provided to produce the sheet of fibrous material according to a bijet technique.
  • film segments having perforations or a serrated edge can be made on only one of the edges. or combining a serrated edge with perforations, the inner edge and the outer edge not being necessarily realized in the same way.
  • perforations or teeth can be made on only part of the contour, for example to reinforce the embedding in directions for which the sheet is subjected to significant efforts.

Abstract

The fibrous material sheet comprises an annular window (10) formed by an annular film segment (4) having an internal edge (6) and an external edge (7) trapped in the fibrous material. The annular film segment has perforations along the edge. The edge of the annular film segment is toothed. The toothed edge has tooth in slots and triangular tooth. An independent claim is included for a method for the production of fibrous material sheet.

Description

La présente invention concerne une feuille de matière fibreuse comportant une fenêtre formée par un segment de film et un procédé de réalisation de cette feuille.The present invention relates to a sheet of fibrous material comprising a window formed by a film segment and a method of producing this sheet.

ARRIERE PLAN DE L'INVENTIONBACKGROUND OF THE INVENTION

On connaît différents procédés pour réaliser une fenêtre dans une feuille de matière fibreuse, en particulier en utilisant un segment de film ayant un bord présentant un contour fermé emprisonné dans une couche de matière fibreuse ou collé à la couche de matière fibreuse.Various methods for making a window in a sheet of fibrous material are known, in particular by using a film segment having an edge having a closed contour trapped in a layer of fibrous material or adhered to the layer of fibrous material.

Toutefois, dans les réalisations existantes, la fenêtre est généralement d'une forme géométrique simple de sorte que même lorsque la fenêtre authentique est réalisée par un segment de film dont le bord est emprisonné dans la matière fibreuse, il est possible pour un fraudeur de faire illusion en réalisant une découpe dans une feuille de matière fibreuse puis en procédant à un collage d'un segment de film ayant des dimensions supérieures à la fenêtre et dont les bords sont appliqués sur le pourtour de la fenêtre sur une face de la feuille de matière fibreuse.However, in existing embodiments, the window is generally of a simple geometrical shape so that even when the authentic window is made by a segment of film whose edge is trapped in the fibrous material, it is possible for a fraudster to do so. illusion by making a cut in a sheet of fibrous material and then by bonding a segment of film having dimensions greater than the window and whose edges are applied on the periphery of the window on one side of the sheet of material fibrous.

OBJET DE L'INVENTIONOBJECT OF THE INVENTION

Le but de l'invention est de proposer une feuille de matière fibreuse comportant une fenêtre dont la forme soit facilement identifiable tout en présentant une difficulté accrue de reproduction par un fraudeur.The object of the invention is to provide a sheet of fibrous material having a window whose shape is easily identifiable while having increased difficulty of reproduction by a fraudster.

RESUME DE L'INVENTIONSUMMARY OF THE INVENTION

En vue de la réalisation de ce but, on propose selon l'invention une feuille de matière fibreuse comportant une fenêtre formée par un segment de film annulaire ayant un bord interne et un bord externe emprisonnés dans la matière fibreuse.In order to achieve this object, a fibrous sheet having a window formed by an annular film segment having an inner edge and an outer edge trapped in the fibrous material is provided according to the invention.

La matière fibreuse emprisonnant le bord interne du segment de film annulaire constitue alors un îlot de matière fibreuse présentant un aspect aisément identifiable et se distinguant clairement de l'aspect d'un segment de matière fibreuse rapporté sur un film.The fibrous material trapping the inner edge of the annular film segment then constitutes an island of fibrous material having an easily identifiable appearance and clearly distinguishable from the appearance of a segment of fibrous material reported on a film.

Selon un aspect avantageux de l'invention, le segment de film annulaire comporte des perforations ou un bord dentelé le long d'au moins un bord. On améliore ainsi la résistance à l'arrachement du segment de film formant la fenêtre ou de l'îlot central de matière fibreuse.According to an advantageous aspect of the invention, the annular film segment comprises perforations or a serrated edge along at least one edge. This improves the tear resistance of the film segment forming the window or the central island of fibrous material.

Selon un autre aspect de l'invention, celle-ci concerne un procédé de réalisation d'une feuille de matière fibreuse comportant une fenêtre, le procédé comportant les étapes d'immerger partiellement dans un bain de fibres une forme poreuse comportant des masques annulaires en relief, de déposer successivement sur les masques des segments de film annulaires ayant des bords débordant des masques en relief, et d'assurer la formation d'une couche fibreuse jusqu'à ce que les bords interne et externe du segment de film soient emprisonnés dans la couche fibreuse.According to another aspect of the invention, this relates to a process for producing a sheet of fibrous material comprising a window, the method comprising the steps of partially immersing in a fiber bath a porous form comprising annular masks in relief, successively deposit on the masks annular film segments having edges protruding masks in relief, and ensure the formation of a fibrous layer until the inner and outer edges of the film segment are trapped in the fibrous layer.

BREVE DESCRIPTION DES DESSINSBRIEF DESCRIPTION OF THE DRAWINGS

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description qui suit d'un mode préféré de mise en oeuvre du procédé selon l'invention, en relation avec les figures ci-jointes parmi lesquelles :

  • la figure 1 est une vue en coupe schématique illustrant la mise en oeuvre du procédé selon l'invention,
  • la figure 2 est une vue en perspective d'un premier mode de réalisation de segment de film utilisé selon l'invention,
  • la figure 3 est une vue en perspective partielle, en coupe selon la ligne III-III de la figure 2, d'une feuille de matière fibreuse équipée d'une fenêtre selon l'invention,
  • la figure 4 est une vue de face d'un segment de film selon un deuxième mode de réalisation de l'invention,
  • la figure 5 est une vue de face d'un segment de film selon un troisième mode de réalisation de l'invention.
Other features and advantages of the invention will appear on reading the following description of a preferred embodiment of the method according to the invention, in relation to the attached figures among which:
  • the figure 1 is a schematic sectional view illustrating the implementation of the method according to the invention,
  • the figure 2 is a perspective view of a first film segment embodiment used according to the invention,
  • the figure 3 is a partial perspective view, in section along the line III-III of the figure 2 , a sheet of fibrous material equipped with a window according to the invention,
  • the figure 4 is a front view of a film segment according to a second embodiment of the invention,
  • the figure 5 is a front view of a film segment according to a third embodiment of the invention.

DESCRIPTION DETAILLEE DE L'INVENTIONDETAILED DESCRIPTION OF THE INVENTION

En référence aux figures 1 et 3, le procédé selon l'invention utilise de façon connue en soi une forme poreuse 1 partiellement immergée dans un bain de fibres 2 et entraînée en rotation tout en maintenant le niveau de liquide à l'intérieur de la forme 1 à un niveau inférieur à celui du bain 2.With reference to Figures 1 and 3 the process according to the invention uses, in a manner known per se, a porous form 1 partially immersed in a fiber bath 2 and driven in rotation while maintaining the liquid level inside the form 1 at a level lower than that bath 2.

Selon l'invention la forme poreuse 1 comporte des masques annulaires en relief 3. Dans le mode de réalisation illustré, les masques 3 sont réalisés de façon connue en soi par emboutissage de la toile de la forme poreuse 1.According to the invention, the porous form 1 comprises annular relief masks 3. In the embodiment illustrated, the masks 3 are made in a manner known per se by stamping the fabric of the porous form 1.

Des segments de film annulaires 4 portés par une bande support 5 sont appliqués successivement sur un masque 3 alors que celui-ci est en-dehors du bain de fibre 2. On notera à ce propos que dans le cas où la partie annulaire du masque 3 est poreuse, le segment de film 4 peut être maintenu appliqué sur le masque 3 par une légère dépression créée à l'intérieur de la forme 1. Dans le cas où le masque 3 a une partie annulaire rendue étanche, par exemple par un vernis, il a été constaté que le segment de film 4 est maintenu appliqué contre le masque 3 par les forces de tension de surface résultant du film de liquide qui subsiste à la surface des masques lors de la rotation de la forme 1.Annular film segments 4 carried by a support band 5 are successively applied to a mask 3 while it is outside the fiber bath 2. It should be noted in this connection that in the case where the annular portion of the mask 3 is porous, the film segment 4 can be maintained applied to the mask 3 by a slight depression created inside the shape 1. In the case where the mask 3 has an annular portion sealed, for example by a varnish, it has been found that the film segment 4 is kept pressed against the mask 3 by the surface tension forces resulting from the film of liquid which remains on the surface of the masks during the rotation of the shape 1.

Le segment de film 4 peut également être maintenu en place par une colle ayant un faible tack ou par une colle soluble dans l'eau.The film segment 4 can also be held in place by an adhesive having a low tack or by a water-soluble adhesive.

Les segments de film 4 ont des dimensions appropriées pour que le bord intérieur et le bord extérieur du segment de film annulaire débordent de la partie annulaire des masques 3.The film segments 4 have appropriate dimensions so that the inner edge and the outer edge of the annular film segment protrude from the annular portion of the masks 3.

Selon le premier mode de réalisation illustré par la figure 2, les segments de film annulaire 4 comportent des perforations 8 le long du bord intérieur 6 et le long du bord extérieur 7. Lors de la rotation de la forme 1, des fibres se déposent sur la partie poreuse de la forme 1 en entourant les masques 3 et en remplissant la partie centrale poreuse 16 des masques 13, tout d'abord en dessous des bords débordant des segments de film 4 puis au-dessus de ceux-ci pour former une couche de fibres 9 emprisonnant le bord intérieur 6 et le bord extérieur 7 du segment de film annulaire 4 et réalisant ainsi une fenêtre annulaire 10 visible de part et d'autre de la feuille de matière fibreuse et délimitant un îlot central 11 relié au reste de la feuille de matière fibreuse par le segment de film annulaire 4.According to the first embodiment illustrated by the figure 2 , the annular film segments 4 have perforations 8 along the inner edge 6 and along the outer edge 7. During the rotation of the form 1, fibers are deposited on the porous part of the shape 1 by surrounding the masks 3 and by filling the porous central portion 16 of the masks 13, firstly below the projecting edges of the film segments 4 and then above them to form a layer of fibers 9 trapping the inner edge 6 and the edge outside 7 of the annular film segment 4 and thus producing an annular window 10 visible on either side of the sheet of fibrous material and delimiting a central island 11 connected to the rest of the sheet of fibrous material by the segment of annular film 4 .

Dans le deuxième mode de réalisation illustré par la figure 4, le segment de film 12 comporte des bords dentelés en créneaux 13 réalisés tant le long du bord intérieur que du bord extérieur du segment de film 12. Sur cette figure, la partie annulaire du masque 3 a été représentée par des traits ou tirets.In the second embodiment illustrated by the figure 4 the film segment 12 has serrated toothed edges 13 made both along the inner edge and the outer edge of the film segment 12. In this figure, the annular portion of the mask 3 has been represented by lines or dashes.

Dans le troisième mode de réalisation illustré par la figure 5, les bords intérieur et extérieur du segment de film 14 sont dentelés selon des dents triangulaires 15.In the third embodiment illustrated by the figure 5 the inner and outer edges of the film segment 14 are serrated according to triangular teeth 15.

Bien entendu, l'invention n'est pas limitée aux modes de réalisation décrits et on peut y apporter des variantes de réalisation sans sortir du cadre de l'invention tel que défini par les revendications.Of course, the invention is not limited to the embodiments described and variants can be made without departing from the scope of the invention as defined by the claims.

En particulier, bien que les segments de film illustrés soient de forme générale circulaire, on peut réaliser des segments de film annulaires ayant toute forme géométrique ou non permettant une identification facile de la feuille de matière fibreuse par la forme de la fenêtre réalisée. A ce propos on notera que le bord intérieur et le bord extérieur peuvent avoir des formes différentes l'une de l'autre.In particular, although the illustrated film segments are generally circular in shape, annular film segments having any shape may be formed. geometric or not allowing easy identification of the sheet of fibrous material by the shape of the window made. In this regard it will be noted that the inner edge and the outer edge may have different shapes from each other.

Par ailleurs, bien que l'invention ait été décrite en mentionnant seulement l'emprisonnement des bords des segments de film dans la masse fibreuse, on peut associer cet emprisonnement avec un collage en prévoyant une enduction des bords ou de la totalité de la surface avec une colle activable lors des opérations de séchage de la feuille de matière fibreuse.On the other hand, although the invention has been described by mentioning only the entrapment of the edges of the film segments in the fibrous mass, this imprisonment can be associated with a bonding by providing a coating of the edges or of the entire surface with an activatable glue during drying operations of the sheet of fibrous material.

Il est également possible d'utiliser de façon connue en soi la fenêtre ainsi réalisée pour obtenir des effets visuels particuliers, que ceux-ci soient d'ordre optique et/ou chromatique, notamment en utilisant des segments de film plus ou moins transparents en fonction des effets recherchés.It is also possible to use, in a manner known per se, the window thus produced to obtain particular visual effects, whether these are of optical and / or chromatic order, in particular by using more or less transparent film segments in function desired effects.

Bien que les masques aient été illustrés sous forme de zones embossées de la forme poreuse, on peut également utiliser des masques rapportés sur la forme poreuse. On peut également déposer sur les masques des substances anti-adhérentes ou hydrophobes, évitant tout dépôt de fibre sur les masques.Although the masks have been illustrated as embossed areas of the porous form, masks reported on the porous form can also be used. Non-adherent or hydrophobic substances can also be deposited on the masks, avoiding any deposit of fibers on the masks.

Bien que selon un procédé préféré la feuille de matière fibreuse soit réalisée au moyen d'une seule forme poreuse, on peut prévoir de réaliser la feuille de matière fibreuse selon une technique de bijet.Although according to a preferred method the sheet of fibrous material is made by means of a single porous form, it can be provided to produce the sheet of fibrous material according to a bijet technique.

Bien que l'invention ait été décrite avec des segments de film comportant des perforations ou un bord dentelé le long de chacun des bords du segment de film, on peut réaliser des segments de film comportant des perforations ou un bord dentelé sur un seul des bords ou combinant un bord dentelé avec des perforations, le bord interne et le bord externe n'étant pas forcément réalisés de la même façon.Although the invention has been described with film segments having perforations or a serrated edge along each edge of the film segment, film segments having perforations or a serrated edge can be made on only one of the edges. or combining a serrated edge with perforations, the inner edge and the outer edge not being necessarily realized in the same way.

Bien que l'invention ait été illustrée avec des segments de film dont le bord est perforé ou dentelé sur toute sa longueur, on peut réaliser les perforations ou les dentures sur une partie du contour seulement, par exemple pour renforcer l'encastrement selon des directions privilégiées pour lesquelles la feuille est soumise à des efforts importants.Although the invention has been illustrated with film segments whose edge is perforated or serrated along its entire length, perforations or teeth can be made on only part of the contour, for example to reinforce the embedding in directions for which the sheet is subjected to significant efforts.

Claims (6)

Feuille de matière fibreuse, caractérisée en ce qu'elle comporte une fenêtre annulaire (10) formée par un segment de film annulaire (4, 12, 14) ayant un bord interne (6) et un bord externe (7) emprisonnés dans la matière fibreuse (9).Sheet of fibrous material, characterized in that it comprises an annular window (10) formed by an annular film segment (4, 12, 14) having an inner edge (6) and an outer edge (7) trapped in the material fibrous (9). Feuille de matière fibreuse selon la revendication 1, caractérisée en ce que le segment de film annulaire (4) comporte des perforations (8) le long d'au moins un bord.Sheet of fibrous material according to Claim 1, characterized in that the annular film segment (4) has perforations (8) along at least one edge. Feuille de matière fibreuse selon la revendication 1, caractérisée en ce qu'au moins un bord du segment de film annulaire (12, 14) est dentelé.Fibrous material sheet according to claim 1, characterized in that at least one edge of the annular film segment (12, 14) is serrated. Feuille de matière fibreuse selon la revendication 3, caractérisée en ce que le bord dentelé comporte des dents en créneaux (13).Fibrous material sheet according to claim 3, characterized in that the serrated edge has crenellated teeth (13). Feuille de matière fibreuse selon la revendication 3, caractérisée en ce que le bord dentelé comporte des dents triangulaires (15).Fibrous material sheet according to claim 3, characterized in that the serrated edge has triangular teeth (15). Procédé de réalisation d'une feuille de matière fibreuse comportant des fenêtres annulaires (10), caractérisé en ce qu'il comporte les étapes d'immerger partiellement dans un bain de fibres (2) une forme poreuse (1) comportant des masques annulaires en relief (3), de déposer successivement sur les masques annulaires des segments de film annulaires (4, 12, 14) ayant un bord intérieur (6) et un bord extérieur (7) débordant du masque annulaire (3), et d'assurer la formation d'une couche fibreuse (9) jusqu'à ce que les bords des segments de film annulaires soient emprisonnés dans la couche fibreuse.Process for producing a sheet of fibrous material comprising annular windows (10), characterized in that it comprises the steps of partially immersing in a fiber bath (2) a porous form (1) comprising annular masks in relief (3), successively depositing on the annular masks annular film segments (4, 12, 14) having an inner edge (6) and an outer edge (7) projecting from the annular mask (3), and ensuring forming a fibrous layer (9) until the edges of the annular film segments are trapped in the fibrous layer.
EP08290269A 2007-04-19 2008-03-21 Sheet of fibrous material comprising an annular window and method of manufacturing same Active EP1985753B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0702829A FR2915210B1 (en) 2007-04-19 2007-04-19 SHEET OF FIBROUS MATERIAL COMPRISING AN ANNULAR WINDOW AND METHOD OF MAKING SAME.

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EP1985753A1 true EP1985753A1 (en) 2008-10-29
EP1985753B1 EP1985753B1 (en) 2010-02-24

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AT (1) ATE458858T1 (en)
DE (1) DE602008000684D1 (en)
ES (1) ES2340226T3 (en)
FR (1) FR2915210B1 (en)

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Publication number Priority date Publication date Assignee Title
US6036230A (en) * 1994-10-11 2000-03-14 Oesterreichische National Bank Paper, especially security paper
WO2003054297A2 (en) * 2001-12-21 2003-07-03 Giesecke & Devrient Gmbh Security paper and method and device for producing the same
WO2003085193A1 (en) * 2002-04-08 2003-10-16 Oesterreichische Banknoten- Und Sicherheitsdruck Gmbh Valuable document
WO2005052249A1 (en) * 2003-11-28 2005-06-09 Landqart Security paper and method for production thereof
WO2005095708A2 (en) * 2004-04-02 2005-10-13 Giesecke & Devrient Gmbh Security document
EP1602782A2 (en) * 2004-06-03 2005-12-07 Banque De France Fibrous web containing a part of a security film, and process for making the same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6036230A (en) * 1994-10-11 2000-03-14 Oesterreichische National Bank Paper, especially security paper
WO2003054297A2 (en) * 2001-12-21 2003-07-03 Giesecke & Devrient Gmbh Security paper and method and device for producing the same
WO2003085193A1 (en) * 2002-04-08 2003-10-16 Oesterreichische Banknoten- Und Sicherheitsdruck Gmbh Valuable document
WO2005052249A1 (en) * 2003-11-28 2005-06-09 Landqart Security paper and method for production thereof
WO2005095708A2 (en) * 2004-04-02 2005-10-13 Giesecke & Devrient Gmbh Security document
EP1602782A2 (en) * 2004-06-03 2005-12-07 Banque De France Fibrous web containing a part of a security film, and process for making the same

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DE602008000684D1 (en) 2010-04-08
FR2915210B1 (en) 2009-06-05
ATE458858T1 (en) 2010-03-15
FR2915210A1 (en) 2008-10-24
ES2340226T3 (en) 2010-05-31
EP1985753B1 (en) 2010-02-24

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