EP0342929A1 - Dekoratives Sicherheitspapier - Google Patents

Dekoratives Sicherheitspapier Download PDF

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Publication number
EP0342929A1
EP0342929A1 EP89304941A EP89304941A EP0342929A1 EP 0342929 A1 EP0342929 A1 EP 0342929A1 EP 89304941 A EP89304941 A EP 89304941A EP 89304941 A EP89304941 A EP 89304941A EP 0342929 A1 EP0342929 A1 EP 0342929A1
Authority
EP
European Patent Office
Prior art keywords
paper
film
substrate
planchets
adhesive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP89304941A
Other languages
English (en)
French (fr)
Inventor
Peter Sinclair
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.)
Wiggins Teape Group Ltd
Original Assignee
Wiggins Teape Group Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wiggins Teape Group Ltd filed Critical Wiggins Teape Group Ltd
Publication of EP0342929A1 publication Critical patent/EP0342929A1/de
Withdrawn legal-status Critical Current

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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
    • D21H21/42—Ribbons or strips
    • 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
    • D21H27/02—Patterned paper
    • 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
    • D21H27/30—Multi-ply
    • 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
    • D21H21/30—Luminescent or fluorescent substances, e.g. for optical bleaching

Definitions

  • the invention relates to security and decorative paper.
  • Films of plastics showing visible surface effects for example iridescence, fluorescence, reflectivity or light polarisation are commercially available for use in decorative packaging/display materials. Such film is, for example, laminated to board to produce fancy soap cartons. We have seen that if it could be satisfactorily incorporated in paper, for example as small punched elements or planchets, such film would be of value in a security context.
  • the visible surface effects would be difficult or impossible to reproduce by printing or reprography, thus preventing ready counterfeiting. Moreover, they do not reproduce at all on a monochrome xerographic copier.
  • photocopies of documents, known only to be printed on material containing film exhibiting such effects when genuine would be immediately identifiable as being fraudulent. In addition such paper would produce a novel decorative effect. Even without the use of film showing visible surface effects a paper difficult to counterfeit would be obtained.
  • Polymeric films such as those of polyester cannot as such be incorporated into paper in any secure way in view of their incompatibility with cellulose. Because of this, planchets incorporated into papermaking stock are found to detach readily from the resulting paper. Not only therefore do they have little security value, but they can interfere with the quality of a printed image if they detach from areas which have been overlaid by printing.
  • the invention lies in a way of using plastics polymer film successfully in a security or decorative paper. This involves laminating the film to a cellulosic fibre substrate, before dividing the laminate by punching or other convenient method, to form planchets which are then incorporated in a papermaking stock.
  • the planchets are conveniently circular but any shape compatible with incorporation in a papermaking stock may be used.
  • This stock can be used to produce security or decorative paper in which the fibres of the cellulosic component of each planchet are firmly united with the fibre structure of the security paper web.
  • the cellulosic substrate is a wet-strength tissue paper.
  • the surface effect may be conferred on the film before or after lamination to the cellulosic substrate.
  • lamination may be effected either by applying the first layer to the substrate and then progressively applying further layers.
  • the already formed multilayer film may be laminated to the substrate using an adhesive.
  • heat lamination is not preferred in this context, since heating of the film to the temperature necessary to achieve bonding to cellulose is likely cause serious deterioration in the visual surface effect.
  • Reflective surfaces are generally produced by forming a vacuum metallized layer on a high gloss plastics film, applying an adhesive to the metallized surface, applying a substrate to the adhesive coated surface and, after the adhesive has cured, stripping the plastics film from the laminate to expose a reflective coating formed by the transferred metallized layer.
  • the vacuum metallized layer may be adhered directly to the cellulose substrate during the transfer process, or to a polymeric film. In the latter case, the film is then laminated to the cellulosic substrate using heat or an adhesive.
  • the polyester is co-extruded with an acrylic plastics film on at least the surface which is to be laminated to the cellulosic substrate.
  • the acrylic material promotes adhesion, with the aid of a suitable adhesive, to the substrate.
  • polymeric adhesives are used, for example vinylacetate/ethylene copolymer adhesive, acrylic emulsion adhesive, or two-­component acrylic/modified polyamino amide adhesive.
  • adhesive can be applied either to the film or to the substrate, before lamination.
  • Lamination is effected with the adhesive in either the wet or dry state depending on the nature of the adhesive used.
  • the particular process of lamination does not however form part of the invention, except in so far as a water resistant bond must be formed.
  • the laminate shown comprises a cellulosic substrate 1, typically high wet strength waterleaf tissue paper, to which a film 2 is laminated by means of an adhesive layer 3.
  • the film 2 exhibits a desired visible surface effect, for example iridescence, fluorescence, reflectivity or light polarization.
  • planchets 5 are cut from the laminate of Figure 1.
  • the planchets 5 are added to paper making stock from which a paper sheet 6 (shown in Figure 3) is formed, the planchets 5 being distributed throughout and well bonded into the sheet.
  • the elements divided from the film/cellulosic laminate can be of any shape, for example, square, circular, hexagonal, star shaped or irregular.
  • the elements may for example be in the range of from 0.1 to 10 millimetres (maximum dimension) in size and are preferably between 0.5 to 2 millimetres maximum dimension.
  • the amount of the elements added to the security paper stock may for example be from 0.02 to 10% and is preferably from 0.1 to 1% of the total weight of solids in the stock.
  • the elements can be added to any conventional papermaking stock, for example furnishes based on bleached/unbleached chemical wood pulp, bleached/unbleached mechanical wood pulp, bleached/unbleached semi-chemical wood pulp, cotton rag pulp or cotton linters or any combination of the foregoing.
  • the paper substrate may be coloured by the use of pigments or dyes or may incorporate other distinctive elements such as 'Silurian' (Trade Mark) fibres.
  • polyester film preferred for its high melting point.
  • suitable films are however known, for example from the U.S. Patent Specification referred to in Example 1, and are on the market.
  • 'Mearl' (Trade Mark) Type 5121 iridescent multi-layer polymeric film made as described in U.S. Patent No. 3442755 from polyester film co-extruded with acrylic polymer at each surface and having a total thickness of 20 microns, was laminated to a 32 g/m2 high wet strength waterleaf tissue using 'Crodafix' (Trade Mark) 27-14500 vinylacetate/ethylene copolymer adhesive at a coatweight of 3 g/m2. The resulting laminate was punched to produce circular planchets 1.6 millimetres in diameter.
  • a papermaking furnish was then prepared comprising 60% bleached sulphate hardwood and 40% bleached sulphate softwood pulp to which was added 0.5% by weight of rosin, 1% by weight of alum and 0.2% by weight of the laminated planchets.
  • Laboratory handsheets were produced from the foregoing furnish and run through a size press which applied a 7.5% solution of starch, 'Amylofax 10' (Trade Mark) made by Tunnel Avebe.
  • Example 1 The procedure of Example 1 was repeated and differed only in that the adhesive used to form the laminate was that sold under the trade name 'Datac 843' - an acrylic emulsion based adhesive which can be applied in the coatweight range 3 to 12 g/m2 (dry). The preferred dry coatweight is 3 g/m2. The results in terms of planchet adhesion accorded closely with those of Example 1.
  • Example 1 The process of Example 1 was repeated, and differed only in that the adhesive used to form the laminate was that sold under the trade name 'Crown Nubond Four' - a two-­component acrylic-modified polyamino amide adhesive.
  • This adhesive can be applied in the coatweight range of 4-24 g/m2 and the preferred coatweight is 4 g/m2.
  • Example 2 was repeated after the addition to the adhesive of a conventional titanium dioxide pigment (sold under the trade name 'Tioxide AHR') in an amount equivalent to 20% by weight of the adhesive solids. After the handsheets had been passed through a size press and dried, they were calendered. It was noted that the presence of the titanium dioxide did not affect the strength of the adhesive bond and that no transparentising of the sheets adjacent to the planchets had occurred.
  • a conventional titanium dioxide pigment sold under the trade name 'Tioxide AHR'
  • Example 3 The procedure of Example 3 was repeated, but with the addition to the adhesive of titanium dioxide (sold under the trade name 'Tioxide AHR') in an amount equivalent to 20% by weight of the adhesive solids. After the handsheets had been passed through a size press and dried, they were calendered. It was found that the presence of the titanium dioxide did not affect the strength of the adhesive bond and that calendering did not affect the opacity of the sheets in the region of the planchets.
  • titanium dioxide sold under the trade name 'Tioxide AHR'
  • the laminate thus produced was converted by punching into planchets 1.6 mm in diameter and added to a papermaking stock (80% hardwood/20% softwood mixture) at a level of 1% by weight of the pulp.
  • Laboratory handsheets were made from the stock and treated in a laboratory size press with a 10% polyvinyl alcohol solution to promote retention of the planchets in the sheet.

Landscapes

  • Laminated Bodies (AREA)
  • Paper (AREA)
EP89304941A 1988-05-17 1989-05-15 Dekoratives Sicherheitspapier Withdrawn EP0342929A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8811671 1988-05-17
GB888811671A GB8811671D0 (en) 1988-05-17 1988-05-17 Security & decorative paper

Publications (1)

Publication Number Publication Date
EP0342929A1 true EP0342929A1 (de) 1989-11-23

Family

ID=10637051

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89304941A Withdrawn EP0342929A1 (de) 1988-05-17 1989-05-15 Dekoratives Sicherheitspapier

Country Status (2)

Country Link
EP (1) EP0342929A1 (de)
GB (1) GB8811671D0 (de)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0546917A1 (de) * 1991-12-12 1993-06-16 Arjo Wiggins S.A. Dekoratives oder Sicherheits-, Konfettis enthaltendes Papier
US5690789A (en) * 1994-05-07 1997-11-25 The Wiggins Teape Group Limited Production of patterned paper
WO2000019016A1 (de) * 1998-09-25 2000-04-06 Landqart Sicherheitspapier und andere sicherheitsartikel
WO2004025028A1 (en) * 2002-09-16 2004-03-25 D W Spinks (Embossing) Ltd Rainbow fibres
WO2005005727A1 (de) * 2003-07-14 2005-01-20 Giesecke & Devrient Gmbh Sicherheitselement
WO2005026440A1 (de) * 2003-09-11 2005-03-24 Giesecke & Devrient Gmbh Flächiges sicherheitselement
FR2866036A1 (fr) * 2004-02-11 2005-08-12 Arjo Wiggins Secutity Sas Elements de securite de format relativement petit et leur procede de fabrication, feuille et document de securite les comportant
FR2865957A1 (fr) * 2004-02-11 2005-08-12 Arjo Wiggins Secutity Sas Procede de fabrication et de decoupe d'elements de format relativement petit, dispositifs correspondants, elements et feuilles comportant lesdits elements
WO2007001360A1 (en) * 2004-09-15 2007-01-04 Crane & Co., Inc. Security device and novel anti-counterfeit product employing same
WO2008017784A1 (fr) * 2006-08-08 2008-02-14 Arjowiggins Element de securite de format relativement petit comprenant un trou traversant et feuille les comprenant
EP1607520A3 (de) * 2004-06-16 2009-04-15 VHP Veiligheidspapierfabriek Uchelen B.V. Sicherheitspapier mit einem Lumineszenzsicherheitselement
WO2014033658A1 (fr) 2012-09-03 2014-03-06 Arjowiggins Security Procédé d'authentification a partir de la teneur en matière bio-sourcée
CN110466248A (zh) * 2018-05-10 2019-11-19 素材的脉有限公司 成像机的安全用记录介质识别单元
CN115716375A (zh) * 2021-08-27 2023-02-28 昆山钞票纸业有限公司 防伪元件及其制造方法和含有其的安全纸张

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2034232A (en) * 1933-09-13 1936-03-17 Keith Paper Company Apparatus for producing safety paper
FR2478695A1 (fr) * 1980-03-21 1981-09-25 Aussedat Rey Papier de surete a particules luminescentes, son procede de fabrication, et procede de fabrication desdites particules
US4652015A (en) * 1985-12-05 1987-03-24 Crane Company Security paper for currency and banknotes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2034232A (en) * 1933-09-13 1936-03-17 Keith Paper Company Apparatus for producing safety paper
FR2478695A1 (fr) * 1980-03-21 1981-09-25 Aussedat Rey Papier de surete a particules luminescentes, son procede de fabrication, et procede de fabrication desdites particules
US4652015A (en) * 1985-12-05 1987-03-24 Crane Company Security paper for currency and banknotes

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2685019A1 (fr) * 1991-12-12 1993-06-18 Arjo Wiggins Sa Papier de securite ou decoratif contenant des planchettes.
EP0546917A1 (de) * 1991-12-12 1993-06-16 Arjo Wiggins S.A. Dekoratives oder Sicherheits-, Konfettis enthaltendes Papier
US5690789A (en) * 1994-05-07 1997-11-25 The Wiggins Teape Group Limited Production of patterned paper
US6468393B1 (en) 1994-05-07 2002-10-22 Arjo Wiggins Fine Papers Limited Patterned paper
US7108286B1 (en) 1998-09-25 2006-09-19 Landquart Antifalsification paper and other antifalsification items
WO2000019016A1 (de) * 1998-09-25 2000-04-06 Landqart Sicherheitspapier und andere sicherheitsartikel
WO2004025028A1 (en) * 2002-09-16 2004-03-25 D W Spinks (Embossing) Ltd Rainbow fibres
EP2860311A1 (de) * 2002-09-16 2015-04-15 D W Spinks (Embossing) Ltd Regenbogenfasern
US8409705B2 (en) 2002-09-16 2013-04-02 D.W. Spinks (Embossing) Ltd. Rainbow fibres
US8158253B2 (en) 2002-09-16 2012-04-17 D W Spinks (Embossing) Ltd. Rainbow fibres
WO2005005727A1 (de) * 2003-07-14 2005-01-20 Giesecke & Devrient Gmbh Sicherheitselement
JP2007527051A (ja) * 2003-07-14 2007-09-20 ギーゼッケ　ウント　デフリエント　ゲーエムベーハー セキュリティー素子
WO2005026440A1 (de) * 2003-09-11 2005-03-24 Giesecke & Devrient Gmbh Flächiges sicherheitselement
CN1849426B (zh) * 2003-09-11 2011-08-03 德国捷德有限公司 平面防伪部件
WO2005077622A3 (fr) * 2004-02-11 2005-12-08 Arjowiggins Security Procede de fabrication et de decoupe d’elements de format relativement petit
FR2866036A1 (fr) * 2004-02-11 2005-08-12 Arjo Wiggins Secutity Sas Elements de securite de format relativement petit et leur procede de fabrication, feuille et document de securite les comportant
US7905422B2 (en) 2004-02-11 2011-03-15 Arjowiggins Security Relatively small security elements, production method thereof, sheet and security document comprising same
FR2865957A1 (fr) * 2004-02-11 2005-08-12 Arjo Wiggins Secutity Sas Procede de fabrication et de decoupe d'elements de format relativement petit, dispositifs correspondants, elements et feuilles comportant lesdits elements
WO2005078192A1 (fr) * 2004-02-11 2005-08-25 Arjowiggins Security Elements de securite de format relativement petit et leur procede de fabrication, feuille et document de securite les comportant
EP1607520A3 (de) * 2004-06-16 2009-04-15 VHP Veiligheidspapierfabriek Uchelen B.V. Sicherheitspapier mit einem Lumineszenzsicherheitselement
US8287993B2 (en) 2004-09-15 2012-10-16 Crane & Co., Inc. Security device and novel anti-counterfeit product employing same
EP1791701B1 (de) 2004-09-15 2016-11-09 Crane & Co., Inc. Sicherheitsvorrichtung und neues fälschungsschutzprodukt damit
WO2007001360A1 (en) * 2004-09-15 2007-01-04 Crane & Co., Inc. Security device and novel anti-counterfeit product employing same
US8100334B2 (en) 2006-08-08 2012-01-24 Arjowiggins Security member having a relatively small format and comprising a through-hole and sheet comprising the same
RU2437974C2 (ru) * 2006-08-08 2011-12-27 Аржовигжен Малоразмерный защитный элемент со сквозным отверстием и лист с такими элементами
FR2904835A1 (fr) * 2006-08-08 2008-02-15 Arjowiggins Soc Par Actions Si Elments de securite de format relativement petit comprenant un trou traversant et feuille les comprenant
WO2008017784A1 (fr) * 2006-08-08 2008-02-14 Arjowiggins Element de securite de format relativement petit comprenant un trou traversant et feuille les comprenant
WO2014033658A1 (fr) 2012-09-03 2014-03-06 Arjowiggins Security Procédé d'authentification a partir de la teneur en matière bio-sourcée
CN110466248A (zh) * 2018-05-10 2019-11-19 素材的脉有限公司 成像机的安全用记录介质识别单元
CN115716375A (zh) * 2021-08-27 2023-02-28 昆山钞票纸业有限公司 防伪元件及其制造方法和含有其的安全纸张

Also Published As

Publication number Publication date
GB8811671D0 (en) 1988-06-22

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