EP0687326B1 - Feuille de securite comportant des elements de securite evitant la reproduction, reconnaissable en lumiere transmise et reflechie et son procede de fabrication - Google Patents
Feuille de securite comportant des elements de securite evitant la reproduction, reconnaissable en lumiere transmise et reflechie et son procede de fabrication Download PDFInfo
- Publication number
- EP0687326B1 EP0687326B1 EP94908389A EP94908389A EP0687326B1 EP 0687326 B1 EP0687326 B1 EP 0687326B1 EP 94908389 A EP94908389 A EP 94908389A EP 94908389 A EP94908389 A EP 94908389A EP 0687326 B1 EP0687326 B1 EP 0687326B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sheet
- security element
- security
- window
- tape
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
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
- D21H21/42—Ribbons or strips
Definitions
- security elements can be security wires which are small strips of plastic, metal which are incorporated in the sheet of paper during its manufacture. These wires are identifiable in light transmitted.
- EP-A-59056 and EP-A-229645 methods for incorporating a security thread in the paper so that it comes out in certain places from the mass of the paper. These methods are advantageous when the wire has metallic reflection properties and is therefore brilliant. Such reflective threads cannot be reproduced by photocopying. To the place of the reflective surface of the wire, it appears only a dark spot, which allows to distinguish the original from the copy.
- EP-A-377167 describes security papers comprising threads of security located at least at one point on the surface of the paper, having deviating structures light, for example holograms.
- security paper comprising openings through which security elements are visible in reflection. These elements may be visible in transmission as a dark longitudinal line.
- the invention aims to provide a security document avoiding the drawbacks mentioned above.
- the invention therefore relates to a security sheet according to one of claims 1 to 5 and a method of manufacturing such a sheet according to one of claims 6 to 9.
- the security element may for example comprise at least one metal surface reflective, or a light-scattering surface or an iridescent, or dichroic surface or may include a hologram or an opaque coating of liquid crystals.
- the sheet is such that it has on one side at least one window whose total area is less than the total area of the security element.
- the method of manufacturing a security document according to the invention is such that we introduce during the manufacture of the sheet by the papermaking process, a security thread consisting of a ribbon bearing visible marks in reflected light, for example metallic marks, iridescent, dichroic, holograms, marks consisting of coatings liquid crystals.
- the tape can be water soluble.
- it can be polyvinyl alcohol (PVA) or more generally it is a water-soluble ester.
- the tape can also be a tape support made beforehand so as to be integrated and invisible in the finished sheet.
- This strip can be obtained by papermaking from a fibrous composition of fibers cellulose and water-soluble ester fibers, for example PVA.
- the tape is then introduced during the manufacture of the security sheet, so that the marks appear on the surface of the paper, but only for part, the part complementary to the mark being inside the paper.
- Figure 1 is a top view of a security sheet according to the invention, this sheet being view in transmitted light.
- Figure 2 is a top view of a sheet according to Figure 1, the sheet being seen in light thoughtful.
- Figure 3 is a sectional view of a sheet according to the invention.
- Figure 4 is a plan view of a ribbon used to make the sheet according to the invention.
- FIG. 5 is a view of a round-shaped paper machine for carrying out the method according to the invention.
- FIG 1 there is shown a security sheet 1 according to the invention.
- the sheet 1 comprises at least one discontinuous security element 2 located at a point of the leaf area S.
- the security element 2 is located partly on the surface of the sheet 1.
- part 3 of the element located on the surface of the sheet is a rectangle.
- the complementary part 4 of the element 2 which is located inside the sheet is the part 4 formed by the total surface of the security element minus part 3.
- the security element 2 has a star shape in FIG. 1.
- the security element 2 When the sheet 1 is viewed in reflected light, we only see the rectangle and when the sheet is seen in transmitted light, namely when the sheet is seen in transparency, we see the security element 2 in its together, that is to say in the star form.
- the security element is a metallic print or a hologram, or a iridescent layer or a dichroic element.
- the ribbon 6 shown in FIG. 4 is a ribbon which can be soluble in water, for example example an ester and more particularly a polyvinyl alcohol.
- Ribbon 6 can also be a ribbon obtained by the papermaking process using a mixture of fibers cellulose and water-soluble matter, such as PVA, the respective amounts of cellulose and PVA fibers being regulated by those skilled in the art so that when the ribbon 6 is introduced into sheet 1, this ribbon is invisible.
- Marks 7 which are obtained by depositing on the entire surface of the ribbon of a metal such as aluminum, and printing of a varnish insoluble in soda, this printing corresponding to the marks 7 that one wishes to achieve. Then we remove aluminum unprotected using sodium hydroxide. You can also print marks 7 using metallic ink or varnish containing iridescent pigments. We can also deposit and bring together dichroic elements. You can also make marks 7 in the form holograms. Marks 7 can also be printed using fluorescent ink. Finally, marks 7 can be produced in the form of bar codes for printing lines metallic or magnetic / metallic lines.
- a machine paper basket comprising an aqueous suspension 8 of cellulose fibers, binders and possibly other compounds usually used to form a sheet of paper.
- a round shape 9 consists of a grid in the form of a cylinder.
- the composition is deposited on the grid when it rotates in the direction of arrow F1.
- Sheet 1 is formed on the cylinder and is pulled by the roller 10 and is transferred to a felt 11 to be then dried.
- a ribbon 6 is introduced which is guided by a roller 12 so that the fibers do not settle over a certain length 1 to form the windows 5.
- the ribbon 6 has marks 7. The distance d between the marks is adjusted 7, as well as the distance between the windows 5 by locating the tape 6 relative to the sheet 1 and by the running speeds of the tape 6 and the sheet 1.
- the windows are produced by embossing carried out on the grid of the round shape 9. These windows 5 are in fact watermarks.
- the shape of the embossings depends on the desired shape of the windows.
- the sheet according to the invention can be produced by a double jet process.
- a sheet is produced by papermaking from a fibrous composition containing 40 parts cellulose fibers refined to 45 degrees Schopper and 60 parts of PVA fibers and possibly conventional adjuvants used in stationery.
- the sheet is dried at a temperature lower than that of thermosolubilization of fibers PVA used, i.e. at a temperature below 60 ° C.
- the size of the windows is adjusted by means of the embossing so as to be smaller than the size brands. Similarly the distance between the windows is adjusted so that the marks coincide with the windows. The speeds of the round shape and the unwinding of the ribbon are similarly adjusted to make the windows and the marks coincide.
- the marks will appear to have a shape distinct from the shape of the windows.
- the ribbon supporting the marks will not appear in transparency.
- Such a sheet is not reproducible by photocopy and moreover it is recognizable by the naked eye by the user.
- Vacuum deposition on a sheet of transparent plastic namely polyester a layer of aluminum.
- the unprotected aluminum is dissolved using a sodium hydroxide solution.
- the sheet is cut in the form of a ribbon which is introduced between two jets of wet paper one of which has windows obtained by embossing the canvas of the round shape. We then press the two jets of paper and dry. As in example 1, by adjusting the dimensions of windows and marks, their respective distances and respective speeds jets and tape, we get a finished sheet that has windows through which can see the reflective aluminum surface with the naked eye by reflection and by transparency marks of different shape from the shape of the windows.
Landscapes
- Paper (AREA)
- Credit Cards Or The Like (AREA)
- Optical Elements Other Than Lenses (AREA)
Description
Claims (9)
- Feuille de sécurité comportant au moins un élément de sécurité (2) discontinu situé dans une zône de la surface (S) de la feuille, élément de sécurité dont une seule partie (3) est située à la surface de la feuille, la partie complémentaire (4) de l'élément de sécurité étant située à l'intérieur de la feuille, ladite partie complémentaire étant visible en lumière transmise et invisible en lumière réfléchie, ladite partie complémentaire (4) ayant une forme différente d'un rectangle et distincte de la forme de ladite partie en surface (3).
- Feuille selon la revendication 1, caractérisée par le fait que l'élément de sécurité (2) comporte au moins une surface réfléchissant ou diffractant la lumière.
- Feuille selon la revendication 2, caractérisée par le fait que l'élément de sécurité (2) comporte au moins une surface métallique, iridescente, dichroïque, un hologramme.
- Feuille selon l'une des revendications précédentes, caractérisée par le fait qu'elle comporte sur une face et au droit de chaque élément de sécurité (2) une fenêtre (5) dont la surface totale est inférieure à la surface totale de l'élément de sécurité (2).
- Feuille selon la revendication 4, caractérisée par le fait que la longueur totale (L) de l'élément de sécurité (2) est supérieure à la longueur (l) de la fenêtre (5) réalisée dans la feuille (1).
- Procédé de fabrication d'une feuille selon l'une des revendications 4 ou 5 selon lequel, lors de la fabrication de la feuille par voie papetière, on introduit un ruban (6) portant au moins un élément de sécurité (2) de forme différente d'un rectangle, on réalise une fenêtre (5) associée à chaque élément de sécurité (2) et de surface inférieure, les formes d'un élément de sécurité et de la fenêtre associée étant distinctes et on règle la vitesse d'introduction du ruban (6) pour que chaque fenêtre soit supperposée à un élément de sécurité.
- Procédé selon la revendication 6, caractérisé par le fait que l'on obtient le ruban (6) à partir d'une feuille de matière plastique transparent sur laquelle on dépose et solidarise des éléments de sécurité (2) et on découpe la feuille en bandes.
- Procédé selon la revendication 6, caractérisé par le fait que l'on obtient le ruban (6) à partir d'une feuille obtenue par voie papetière à partir de fibres de cellulose et de fibres solubles dans l'eau, sur laquelle on dépose et solidarise des éléments de sécurité (2) et on découpe la feuille en bandes.
- Procédé selon la revendication 6, caractérisé par le fait que l'on obtient le ruban (6) à partir d'une feuille soluble dans l'eau sur laquelle on dépose et solidarise des éléments de sécurité (2) et on découpe la feuille en bandes.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9302372A FR2702228B1 (fr) | 1993-03-02 | 1993-03-02 | Feuille de sécurité comportant des éléments de sécurité évitant la reproduction, reconnaissable en lumière transmise et réfléchie et son procédé de fabrication. |
FR9302372 | 1993-03-02 | ||
PCT/FR1994/000226 WO1994020683A1 (fr) | 1993-03-02 | 1994-03-01 | Feuille de securite comportant des elements de securite evitant la reproduction, reconnaissable en lumiere transmise et reflechie et son procede de fabrication |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0687326A1 EP0687326A1 (fr) | 1995-12-20 |
EP0687326B1 true EP0687326B1 (fr) | 1998-05-13 |
Family
ID=9444566
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94908389A Expired - Lifetime EP0687326B1 (fr) | 1993-03-02 | 1994-03-01 | Feuille de securite comportant des elements de securite evitant la reproduction, reconnaissable en lumiere transmise et reflechie et son procede de fabrication |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0687326B1 (fr) |
DE (1) | DE69410241T2 (fr) |
ES (1) | ES2119175T3 (fr) |
FR (1) | FR2702228B1 (fr) |
SI (1) | SI9420011A (fr) |
WO (1) | WO1994020683A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2323814B (en) | 1997-04-03 | 1999-06-02 | Portals Ltd | Security element for security paper |
FR2839917B1 (fr) * | 2002-05-22 | 2004-10-08 | Arjo Wiggins | Article forme a partir d'au moins un jet de matiere fibreuse comportant au moins une zone d'epaisseur nulle et procede de fabrication dudit article |
FR2853970B1 (fr) * | 2003-04-18 | 2005-10-21 | Arjo Wiggins | Support multicouche translucide presentant un motif visible en reflection et non en transparence |
FR2929962B1 (fr) * | 2008-04-11 | 2021-06-25 | Arjowiggins Licensing Sas | Procede de fabrication d'une feuille comportant une sous- epaisseur ou une sur-epaisseur au niveau d'un ruban et feuille associee. |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IN157644B (fr) * | 1981-02-19 | 1986-05-10 | Portals Ltd | |
US4437935A (en) * | 1981-06-03 | 1984-03-20 | Crane And Company | Method and apparatus for providing security features in paper |
DE3265421D1 (en) * | 1981-07-13 | 1985-09-19 | Portals Ltd | Paper incorporating a partially embedded strip, methods for making paper and security documents |
GB8912750D0 (en) * | 1989-06-02 | 1989-07-19 | Portals Ltd | Security paper |
-
1993
- 1993-03-02 FR FR9302372A patent/FR2702228B1/fr not_active Expired - Lifetime
-
1994
- 1994-03-01 SI SI9420011A patent/SI9420011A/sl unknown
- 1994-03-01 WO PCT/FR1994/000226 patent/WO1994020683A1/fr active IP Right Grant
- 1994-03-01 EP EP94908389A patent/EP0687326B1/fr not_active Expired - Lifetime
- 1994-03-01 ES ES94908389T patent/ES2119175T3/es not_active Expired - Lifetime
- 1994-03-01 DE DE69410241T patent/DE69410241T2/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0687326A1 (fr) | 1995-12-20 |
SI9420011A (en) | 1996-02-29 |
FR2702228B1 (fr) | 1995-04-14 |
WO1994020683A1 (fr) | 1994-09-15 |
ES2119175T3 (es) | 1998-10-01 |
FR2702228A1 (fr) | 1994-09-09 |
DE69410241D1 (de) | 1998-06-18 |
DE69410241T2 (de) | 1999-02-11 |
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