EP0546917B1 - Papier de sécurité ou décoratif contenant des planchettes - Google Patents

Papier de sécurité ou décoratif contenant des planchettes Download PDF

Info

Publication number
EP0546917B1
EP0546917B1 EP19920403311 EP92403311A EP0546917B1 EP 0546917 B1 EP0546917 B1 EP 0546917B1 EP 19920403311 EP19920403311 EP 19920403311 EP 92403311 A EP92403311 A EP 92403311A EP 0546917 B1 EP0546917 B1 EP 0546917B1
Authority
EP
European Patent Office
Prior art keywords
sheet
boards
planchets
sheet according
paper
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
Application number
EP19920403311
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0546917A1 (fr
Inventor
Michel Camus
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 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
Application filed by ArjoWiggins SAS filed Critical ArjoWiggins SAS
Publication of EP0546917A1 publication Critical patent/EP0546917A1/fr
Application granted granted Critical
Publication of EP0546917B1 publication Critical patent/EP0546917B1/fr
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
    • 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
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • 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

Definitions

  • the invention relates to sheets comprising boards and usable in particular for the production of security documents or as decorative sheets. It also concerns boards.
  • the authentication of a security document can be done by recognizing one or more security elements such as watermarks, security threads, planchettes. Some of these elements, in particular when they have surface optical effects, also help protect the document against reproduction by photocopy or scanner.
  • the boards are confetti having various shapes, for example circular, hexagonal. They are generally made by cutting a plastic film or a sheet of paper. To make security papers or banknote papers containing boards, these are introduced into the aqueous dispersion containing cellulose fibers, possibly synthetic fibers and other additives commonly used in the paper technique. When the aqueous suspension is drained on a canvas of a round or Fourdrinier paper machine, a certain number of boards are placed on the surface of the sheet of paper thus formed, then the sheet is dried.
  • the boards and therefore the material from which they are cut to have surface optical effects such as iridescence or dichroism, fluorescence, reflection or polarization of light.
  • surface optical effects such as iridescence or dichroism, fluorescence, reflection or polarization of light.
  • iridescent films by coextruding several layers of polymers having adequate relative refractive indices.
  • a first problem which arises is that when these boards are made of plastic, such as for example polyester, it is very difficult to disperse them in water (the wettability of the plastic films is very low) and therefore to add them during the formation of the sheet of paper.
  • the invention proposes to solve these problems by using boards made from a plastic film which has been coated on at least one of its faces with a composition containing at least one agent improving the wettability with water. and having a heat-sealable nature under the conditions of drying of the sheet during manufacture on a paper machine.
  • the invention provides a sheet comprising planchettes, formed from plastic film, flush with the surface of the sheet, but which do not peel off during printing (or during any other surface treatment of the sheet) or handling the sheet.
  • the boards may have optical surface effects.
  • the heat-sealable character is developed during the production of the sheet on a paper machine, during the drying of the sheet. It promotes the holding of the boards on the surface of the sheet
  • the agent improving the wettability with water is preferably a vinyl copolymer and more particularly a vinyl acetate-vinyl chloride-ethylene copolymer.
  • the coating composition can be in an aqueous medium or in a solvent medium.
  • a solvent will be chosen which does not attack the plastic used to make the boards and which does not destroy the optical surface effect if there is one.
  • an aqueous composition is preferably used.
  • the composition is a varnish in an aqueous medium.
  • composition is deposited on the surface of the film by any coating or printing means.
  • the amount of wetting agent deposited by dry weight is preferably between 0.5 and 3 g / m2 per side.
  • boards are used which have an optical surface effect, this effect may possibly be different for each face.
  • the invention also provides a sheet which is characterized in that the boards have an effect of iridescence or dichroism, fluorescence, reflection of light, polarization of light or any other optical surface effect.
  • This optical effect can be intrinsic to the film from which they are made, such as, for example, the iridescence of a multilayer film or the fluorescence of a film loaded with masses of pigments. fluorescent.
  • This effect can also come from a surface treatment of the film, this treatment possibly being able to be carried out at the same time as the film is coated with the composition containing the wetting agent.
  • the boards are added to the sheet being formed on a paper machine according to techniques known to those skilled in the art.
  • the sheet can be made with organic fibers of natural origin such as cellulose fibers; it can also contain synthetic and / or mineral fibers.
  • the sheet can optionally be a multijet sheet.
  • the invention also relates to security documents (banknotes, passports, valuable documents, etc.) obtained from said sheets containing the boards.
  • the invention also provides decorative sheets (packaging, wall covering, etc.) obtained from said sheets containing the boards.
  • the invention also provides boards obtained by cutting a plastic film coated on at least one of its faces with a composition containing at least one wetting agent.
  • This agent can have a heat-sealable character and preferably the boards have an optical surface effect.
  • An iridescent multilayer plastic film marketed by MEARL is coated with an aqueous varnish of a vinyl acetate - ethylene - vinyl chloride copolymer marketed by VINAMUL.
  • the amount of varnish deposited on each side is 2 g / m2 by dry weight.
  • the film thus coated is cut into boards of hexagonal shape. It is checked that the wettability of the boards has been improved by measuring the contact angle of a drop of water on the film.
  • the angle is 85 degrees; after treatment it is 4 degrees.
  • the wettability has therefore been considerably increased.
  • the sheet obtained is offset printed. It can be seen that the boards are not torn off from the surface of the paper during printing. They also do not come off when handling the sheet.
  • the holding of the boards on the surface of the paper is also improved due to the heat-sealable nature of the varnish, a character developed during the drying of the sheet.

Landscapes

  • Paper (AREA)
  • Laminated Bodies (AREA)
  • Wrappers (AREA)
  • Packages (AREA)
EP19920403311 1991-12-12 1992-12-08 Papier de sécurité ou décoratif contenant des planchettes Expired - Lifetime EP0546917B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9115439A FR2685019A1 (fr) 1991-12-12 1991-12-12 Papier de securite ou decoratif contenant des planchettes.
FR9115439 1991-12-12

Publications (2)

Publication Number Publication Date
EP0546917A1 EP0546917A1 (fr) 1993-06-16
EP0546917B1 true EP0546917B1 (fr) 1995-11-29

Family

ID=9419975

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920403311 Expired - Lifetime EP0546917B1 (fr) 1991-12-12 1992-12-08 Papier de sécurité ou décoratif contenant des planchettes

Country Status (5)

Country Link
EP (1) EP0546917B1 (Direct)
DE (1) DE69206391T2 (Direct)
ES (1) ES2084312T3 (Direct)
FR (1) FR2685019A1 (Direct)
SI (1) SI9200380A (Direct)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0687324B2 (fr) 1993-03-02 2005-12-07 Arjowiggins Security Papier de securite comportant des zones localisees d'epaisseur et d'opacite reduites et son procede de fabrication
EP0695830B1 (en) * 1993-04-16 2002-07-24 Tokushu Paper Mfg. Co., Ltd Forgery-proof paper
DE10342253A1 (de) * 2003-09-11 2005-04-07 Giesecke & Devrient Gmbh Flächiges Sicherheitselement
FR2904835B1 (fr) 2006-08-08 2010-03-19 Arjowiggins Elements de securite de format relativement petit comprenant un trou traversant et feuille les comprenant
FR2995114B1 (fr) 2012-09-03 2015-09-04 Arjowiggins Security Procede d'authentification a partir de la teneur en matiere bio-sourcee.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8806775D0 (en) * 1988-03-22 1988-04-20 Unilever Plc Modified terpolymer emulsions
GB8811671D0 (en) * 1988-05-17 1988-06-22 Wiggins Teape Group Ltd Security & decorative paper

Also Published As

Publication number Publication date
SI9200380A (en) 1993-06-30
ES2084312T3 (es) 1996-05-01
FR2685019A1 (fr) 1993-06-18
EP0546917A1 (fr) 1993-06-16
DE69206391T2 (de) 1996-05-23
FR2685019B1 (Direct) 1997-02-14
DE69206391D1 (de) 1996-01-11

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