EP0687324A1 - Sicherheitspapier mit reduzierter dicke und opazität in lokalen bereichen und das verfahren zu seiner herstellung - Google Patents

Sicherheitspapier mit reduzierter dicke und opazität in lokalen bereichen und das verfahren zu seiner herstellung

Info

Publication number
EP0687324A1
EP0687324A1 EP94908388A EP94908388A EP0687324A1 EP 0687324 A1 EP0687324 A1 EP 0687324A1 EP 94908388 A EP94908388 A EP 94908388A EP 94908388 A EP94908388 A EP 94908388A EP 0687324 A1 EP0687324 A1 EP 0687324A1
Authority
EP
European Patent Office
Prior art keywords
paper
thickness
sheet
opacity
regions
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.)
Granted
Application number
EP94908388A
Other languages
English (en)
French (fr)
Other versions
EP0687324B2 (de
EP0687324B1 (de
Inventor
Pierre Doublet
Yves Douesneau
Jean-Paul Menez
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 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.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26230137&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0687324(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by ArjoWiggins SAS filed Critical ArjoWiggins SAS
Publication of EP0687324A1 publication Critical patent/EP0687324A1/de
Application granted granted Critical
Publication of EP0687324B1 publication Critical patent/EP0687324B1/de
Publication of EP0687324B2 publication Critical patent/EP0687324B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/06—Vegetable or imitation parchment; Glassine paper
    • 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
    • D21F11/006—Making patterned paper
    • 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 invention relates to a sheet of security paper comprising localized areas of reduced thickness and opacity, and more particularly to a banknote paper or a security paper comprising large areas of reduced thickness and opacity, specific locations, these areas being watermarks.
  • the invention preferably relates to a sheet of paper comprising at least one zone having a uniform average opacity less than at least 40% compared to the opacity of the rest of the sheet.
  • paper means any sheet obtained by the wet process using a suspension of natural cellulose fibers and / or synthetic fibers which may contain various fillers and various additives commonly used in stationery.
  • the light areas are due to the fact that the sheet thickness and the density of the fibers are smaller than the sheet thickness and the density of the fibers in the areas where the watermark has not been imprinted .
  • the dark areas are due to the fact that the thickness of the sheet and the density of the fibers are greater.
  • Such watermarks have clear parts which generally have areas of a few mm 2 and the variation in opacity between the light part of the watermark and the non-watermarked paper is small. If you want to print on the light areas of these watermarks, it is very difficult to match the light areas and the printing and even with very precise identification of the watermarks, it is difficult to obtain a good match.
  • a security paper comprising zones of reduced opacity, at determined and well-localized locations, the zones making it possible to see by transmission, with the naked eye, prints carried on the face opposite to the face on which we are looking at the paper .
  • the zones can, for example, be produced in the form of a watermark by using methods of round shape or with watermark rollers.
  • the first problem is as follows: To make a watermark, the skilled person knows that one can work the canvas in a round shape using a punch. For example, if you want a clear circular area, emboss the canvas with a circular punch. However, using such a method, one does not obtain a clear zone of constant opacity. Indeed, it has been observed that the fibers tend to deposit in greater quantity in the vicinity of the center of the embossed part than on the edges and therefore the center of the watermark appears much less clear than the edges. If we use a watermark roll which has raised asperities, we get the same phenomenon.
  • a second problem which arises is that when one wants zones of reduced thickness and therefore clear having an area of more than 0.4 cm 2 , one does not obtain a clear zone.
  • the sheet of paper obtained according to this process is such that the zone having a reduced thickness has a thickness less than 40% of the thickness of the rest of the sheet.
  • the sheet may also be such that said zone has an average opacity less than 40% of the opacity of the rest of the sheet.
  • the process requires a transformation of the paper machine, that is to say that Ton associates with the watermarked fabric, or with the watermarking roller, or in the round shape, flexible parts. These parts must be fixed in specific locations and therefore require additional handling.
  • the area has a thickness 30% less than the thickness of the rest of the sheet.
  • Banknotes are also known which consist of sheets of transparent synthetic material on which a two-sided printing is carried out, the printing being such that it leaves a completely transparent area. On this transparent area, a hologram is reported.
  • plastic tickets however, have some drawbacks. They are not very resistant to handling and traffic because the print can be fragile on the plastic. This is why we prefer paper tickets, but at the same time we want to make the area as transparent as possible.
  • the area obtained is certainly of reduced thickness and reduced opacity, but an area of even lower opacity is desired.
  • Another object of the invention is to produce a practically transparent or translucent area in the paper, without piercing the paper in this area.
  • Another object is to provide a practically transparent or translucent zone in the paper, this zone which can be printed and / or which can receive a hologram or any other distinctive or security mark.
  • This zone must therefore be strong enough to support the carrying of a safety mark.
  • An object of the invention is therefore to provide zones of reduced thickness compared to the rest of the sheet without the need to use associated flexible parts.
  • Another object of the invention is to provide zones having a thickness lower much more reduced than 40% compared to the rest of the leaf.
  • the invention relates to a sheet of paper comprising at least one zone of reduced opacity, that is to say a zone having a uniform average opacity less than at least about 40% compared to the opacity from the rest of the sheet, the area having an area of at least 0.4 cm 2 , characterized in that the area has a reduced opacity due to the reduction in its thickness compared to the thickness of the rest of the sheet and the fact that it has undergone additional transparency.
  • the sheet according to the invention may comprise in a part of the zone of reduced opacity a hologram, an iridescent coating, a printing using conventional inks or inks containing colored pigments, fluorescent pigments, luminescent pigments, compounds photochromes, piezooptics, piezochromes.
  • the sheet of paper may be a single-ply or single-ply sheet, that is to say a sheet comprising an area whose thickness is not zero, the residual thickness being chemically transparentized.
  • the sheet of paper can be a twin-ply sheet or two layers, that is to say that it consists of a first jet or layer comprising an area whose thickness is zero, and a second spray partially or completely transparentized.
  • this jet can be obtained according to the tracing paper technique, namely from a suspension of very refined cellulose fibers, to obtain transparency.
  • the second jet is partially transparent, it is chemically transparent in an area which comes into correspondence with the zone of zero thickness of the first jet.
  • the invention further relates to a method of manufacturing a sheet of paper comprising at least one region having a thickness reduced compared to the thickness of the rest of the sheet, characterized in that:
  • a first layer of paper is formed on a canvas of a first wet part of a paper machine
  • a second layer of paper is formed on a canvas of a second part wet from a paper machine
  • One of the two layers of paper having at least local regions of smaller thickness, so that the thickness of the two layers of paper in said regions is up to 80% relative to the thickness of the rest of the leaf,
  • One or even two layers of paper can be produced without problem so as to be locally very thin, at least one of the layers of paper in a region being reduced locally so that the overall thickness of the two layers is sufficiently reduced to obtain a good transparency.
  • the layers of paper are produced on separate paper canvases, a sheet of paper is obtained which it is no longer possible to separate due to the rapid coupling of these layers and their joint drying.
  • the sheet of paper is no different from a sheet of paper made on a single canvas.
  • the process is such that the regions of smaller thickness in the paper layer (s) are produced by embossed regions in relief on the mechanical fabric, where it follows that the deposition of fibers in these regions is reduced or totally prohibited .
  • At least one of the layers of the paper is produced by a machine with a round shape.
  • one of the two layers may include regions in which the thickness is zero.
  • the thinner regions of the paper strips are formed in the form of a simple geometric pattern, in particular in the form of flat regions which are approximately rectangular, round or elliptical or any other shape.
  • FIG. 1 shows a device which can be used for manufacturing security paper according to the invention.
  • FIGS 2, 3 and 4, 5 and 6 show in section various papers produced according to the invention.
  • Figure 7 shows a check paper obtained according to the invention.
  • Figure 1 shows a device that can be used to make a paper according to the invention.
  • the device essentially corresponds to the usual commercial paper machines, which comprise at least two separate wet parts.
  • the preferred embodiment shown here is constituted by a combination of two round-shaped wet parts 1 and 2 of a so-called double-round paper machine.
  • a first strip of paper 3 is produced, which is directed towards the second wet part 2 while being suspended below the pick-up felt 4.
  • a second strip of paper 5 is produced. Both strips of paper are brought together at the roller 6 and are then dried.
  • Two round-shaped installations are preferably used for the production of the two layers of paper.
  • only a round shape can be used and in this case the sheet is made transparent in the areas of reduced thickness.
  • FIGs 2 and 3 there is shown a paper according to the invention.
  • This sheet 7 is formed by a first strip 3 and a second strip 5.
  • the strip 5 comprises clear watermarks 8 obtained for example by an embossing in relief of the canvas of the round shape 5. These clear watermarks have a depth e- ,.
  • the total thickness e t of the sheet 7 is the sum of the thicknesses e 3 of the strip 3 and e 6 of the strip 5.
  • the thickness e 2 of the sheet 7 opposite the watermarks 8 is less than the total thickness and t .
  • the reduction in thickness is therefore approximately 33% in the first case and 50% in the second case.
  • the sheet of Figure 3 therefore has a reduced opacity much lower than the opacity of the sheet of Figure 2, in the region 8 and this for a total thickness e t substantially equal.
  • the sheet shown in Figure 5 is produced using the monojet technique. This sheet is obtained by the process described in application EP-A-549384.
  • the sheet 11 comprises zones 12, 12a, 12b, of thickness e, and zones 13, 13a, of thickness e 2 not zero.
  • the zones 13, 13a have a density of fibers much lower than the density of the zones 12, 12a, 12b.
  • Each zone 13, 13a undergoes an additional transparency.
  • This transparentization is carried out chemically according to this embodiment.
  • the transparentization is carried out using a transparentization composition described in the European patent of the applicant EP-91 341.
  • the additional transparentization is carried out after drying of the sheet, at the end of the machine.
  • composition can for example consist of:
  • This composition is applied for example by printing using an engraved printing cylinder, the cylinder engravings corresponding to the areas 13, 13a to be transparentized.
  • FIG. 6 represents in section a sheet 14 obtained according to the technique of "bijet" shown in Figure 1.
  • the sheet 11 shown in Figure 6 is formed of a first strip 16 and a second strip 17.
  • the strip 17 is such that it has zones 18 of zero thickness.
  • the strip 16 may or may not be transparentized in the zones situated opposite the zones 18.
  • the strip 17 may also have zones 18 of non-zero thickness which are then clear watermarks obtained for example by an embossing in relief of the canvas the round shape 5.
  • the strip 16 may or may not be made transparent in areas facing the areas 18.
  • the zones of zero thickness are produced by embossing the fabric of the round shape 5, sufficiently so that at the level of the embossings, there is no deposit of cellulose fibers.
  • the strip 16 can be tracing paper obtained by a thorough refining of the cellulose fibers.
  • Printed patterns 15 can be deposited opposite the zones 18. It is also possible to deposit layers of fluorescent pigments, layers or prints of iridescent pigments, metallic prints, holograms. There will then be a sheet of paper comprising a transparent zone in transmitted light, this zone being of large surface. If a layer, for example an iridescent layer, is deposited on the transparent zone, this layer only partially covering the transparent zone, there will be an additional visual effect. In addition, such a sheet will be very difficult to reproduce by color photocopier because the iridescent area will not be reproduced by copying and the transparent area will be opaque after copying.
  • a security paper preferably a paper for checks, obtained according to the method according to the invention.
  • This security paper 19 comprises at least one zone 20 whose thickness is less than the thickness of the rest of the sheet.
  • the zone 20 has a thickness 40% less than the thickness of the rest of the sheet.
EP94908388A 1993-03-02 1994-03-01 Sicherheitspapier mit reduzierter dicke und opazität in lokalen bereichen und das verfahren zu seiner herstellung Expired - Lifetime EP0687324B2 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
FR9302373 1993-03-02
FR9302373 1993-03-02
FR9311485 1993-09-28
FR9311485 1993-09-28
PCT/FR1994/000225 WO1994020679A1 (fr) 1993-03-02 1994-03-01 Papier de securite comportant des zones localisees d'epaisseur et d'opacite reduites et son procede de fabrication

Publications (3)

Publication Number Publication Date
EP0687324A1 true EP0687324A1 (de) 1995-12-20
EP0687324B1 EP0687324B1 (de) 2000-01-19
EP0687324B2 EP0687324B2 (de) 2005-12-07

Family

ID=26230137

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94908388A Expired - Lifetime EP0687324B2 (de) 1993-03-02 1994-03-01 Sicherheitspapier mit reduzierter dicke und opazität in lokalen bereichen und das verfahren zu seiner herstellung

Country Status (5)

Country Link
US (1) US6402888B1 (de)
EP (1) EP0687324B2 (de)
DE (1) DE69422705T3 (de)
ES (1) ES2142937T5 (de)
WO (1) WO1994020679A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2842460A1 (fr) 2002-07-19 2004-01-23 Arjo Wiggins Document de securite protege contre la copie recto/verso
FR2849624A1 (fr) 2003-01-02 2004-07-09 Arjo Wiggins Secutity Sas Feuille avec une zone d'opacite reduite anticopie
US8083894B2 (en) 2005-07-12 2011-12-27 Giesecke & Devrient Gmbh Method for manufacturing a security paper

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Publication number Priority date Publication date Assignee Title
FR2741089B1 (fr) * 1995-11-10 1997-12-26 Arjo Wiggins Sa Feuille de securite d'epaisseur sensiblement constante
IT1283452B1 (it) * 1996-07-18 1998-04-21 Fad Fabriano Autoadesivi S P A Impianto per la fabbricazione di un mezzo filtrante in forma di foglio
US6368455B1 (en) * 2001-05-31 2002-04-09 Appleton Papers Inc. Method for making security paper
FR2804447B1 (fr) * 2000-02-01 2002-04-05 Arjo Wiggins Sa Papier comportant un filigrane a effet multiton et toile pour fabriquer ce papier
FR2804448B1 (fr) * 2000-02-01 2002-04-05 Arjo Wiggins Sa Papier de securite comportant une zone de securite, procede pour realiser un tel papier et dispositif pour mettre en oeuvre ce procede
SE516625C2 (sv) * 2000-06-20 2002-02-05 Holmen Ab Säkerhetspapper/kartong och förfarande för framställning därav
FR2816642B1 (fr) * 2000-11-10 2003-07-18 Banque De France Procede de fabrication d'un document de securite
FR2838228B1 (fr) 2002-04-03 2005-03-25 Arjo Wiggins Document de securite avec marqueur
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
FR2861101B1 (fr) * 2003-10-15 2007-06-15 Arjo Wiggins Papier de securite multijet
FI119391B (fi) * 2004-01-05 2008-10-31 Stora Enso Oyj Menetelmä tunnistemerkintöjen tuottamiseksi paperiin tai kartonkiin sekä menetelmällä aikaansaatu merkitty materiaali
ITVR20040104A1 (it) * 2004-06-16 2004-09-16 Cartiere Fedrigoni & C Spa Apparecchiatura per la produzione di carta di sicurezza e relativo procedimento
DE102005045566A1 (de) * 2005-03-23 2006-09-28 Giesecke & Devrient Gmbh Mehrlagiges Sicherheitspapier
DE102005022018A1 (de) * 2005-05-12 2006-11-16 Giesecke & Devrient Gmbh Sicherheitspapier und Verfahren zu seiner Herstellung
US20070131368A1 (en) * 2005-12-14 2007-06-14 Sonoco Development, Inc. Paperboard with discrete densified regions, process for making same, and laminate incorporating same
CN100360740C (zh) * 2005-12-23 2008-01-09 中国印钞造币总公司 高定量水印防伪纸的制作方法
US20070178261A1 (en) * 2006-01-27 2007-08-02 Avery Levy Paper envelope having an integrated magnetic recording medium
FR2897078B1 (fr) 2006-02-09 2011-08-19 Arjowiggins Materiau en feuille comportant au moins un filigrane avec une nuance coloree.
GB2437939B (en) * 2006-05-08 2008-03-26 Rue De Int Ltd Improvements in security substrates
FR2903706B1 (fr) * 2006-07-13 2010-02-05 Arjowiggins Feuille comprenant une partie en matiere plastique et une partie en matiere fibreuse.
US8125667B2 (en) 2006-09-15 2012-02-28 Avery Levy System and method for enabling transactions by means of print media that incorporate electronic recording and transmission means
US20080166262A1 (en) * 2007-01-04 2008-07-10 Deka Ganesh C Medical packaging substrate with security feature
FR2918679B1 (fr) 2007-07-11 2017-12-01 Arjowiggins Licensing Sas Procede de fabrication d'un materiau en feuille.
FR2925535B1 (fr) * 2007-12-21 2011-05-06 Arjowiggins Licensing Sas Feuille de securite comprenant un substrat fibreux comportant au moins un filigrane
FR2925534B1 (fr) * 2007-12-24 2010-02-12 Arjowiggins Licensing Sas Structure de securite comportant des cristaux liquides nematiques
FR2925924B1 (fr) * 2007-12-28 2011-04-29 Arjowiggins Licensing Sas Papier de securite
GB2458485B (en) * 2008-03-19 2010-07-14 Rue De Int Ltd Improvements in making sheets
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.
AU2009258133A1 (en) * 2008-06-12 2009-12-17 Crane & Co., Inc. Method for increasing adhesion between a security element and a fibrous sheet material
FR2941713B1 (fr) * 2009-02-03 2011-04-01 Arjowiggins Security Procede de securisation d'un objet opaque colore.
US9694536B2 (en) 2013-11-18 2017-07-04 Huhtamaki, Inc. System and method for embossing the wire side of a molded fiber article
GB2539644A (en) * 2015-06-16 2016-12-28 Mcor Tech Ltd Desktop 3-dimensional printing apparatus
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2842460A1 (fr) 2002-07-19 2004-01-23 Arjo Wiggins Document de securite protege contre la copie recto/verso
WO2004009372A2 (fr) 2002-07-19 2004-01-29 Arjo Wiggins Security Sas Document de securite protégé contre la copie recto/verso
FR2849624A1 (fr) 2003-01-02 2004-07-09 Arjo Wiggins Secutity Sas Feuille avec une zone d'opacite reduite anticopie
WO2004062941A1 (fr) 2003-01-02 2004-07-29 Arjo Wiggins Security Sas Feuille avec une zone d'opacite reduite anticopie
US8083894B2 (en) 2005-07-12 2011-12-27 Giesecke & Devrient Gmbh Method for manufacturing a security paper

Also Published As

Publication number Publication date
ES2142937T3 (es) 2000-05-01
US6402888B1 (en) 2002-06-11
DE69422705T2 (de) 2000-10-05
EP0687324B2 (de) 2005-12-07
EP0687324B1 (de) 2000-01-19
WO1994020679A1 (fr) 1994-09-15
DE69422705T3 (de) 2006-08-17
ES2142937T5 (es) 2006-07-16
DE69422705D1 (de) 2000-02-24

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