EP1630285A2 - Verfahren zur Herstellung eines Streifen enthaltenden Faserstoffsubstrats - Google Patents

Verfahren zur Herstellung eines Streifen enthaltenden Faserstoffsubstrats Download PDF

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Publication number
EP1630285A2
EP1630285A2 EP05255210A EP05255210A EP1630285A2 EP 1630285 A2 EP1630285 A2 EP 1630285A2 EP 05255210 A EP05255210 A EP 05255210A EP 05255210 A EP05255210 A EP 05255210A EP 1630285 A2 EP1630285 A2 EP 1630285A2
Authority
EP
European Patent Office
Prior art keywords
substrate
windows
forming means
elongate
window forming
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Withdrawn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
EP05255210A
Other languages
English (en)
French (fr)
Other versions
EP1630285A3 (de
Inventor
Simon Dexter Marchant
Peter Howland
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.)
De la Rue International Ltd
Original Assignee
De la Rue International 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 De la Rue International Ltd filed Critical De la Rue International Ltd
Publication of EP1630285A2 publication Critical patent/EP1630285A2/de
Publication of EP1630285A3 publication Critical patent/EP1630285A3/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/355—Security threads
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F9/00—Complete machines for making continuous webs of paper
    • D21F9/04—Complete machines for making continuous webs of paper of the cylinder type
    • D21F9/043—Complete machines for making continuous webs of paper of the cylinder type with immersed cylinder
    • 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

  • This invention is directed to improvements in manufacturing substrates, such as paper, incorporating an elongate impermeable element which is exposed at windows in both surfaces of the substrates and a substrate made therefrom.
  • elongate elements in paper or other substrates, usually as a security feature.
  • Such elements can be threads, strips or ribbons of, for example, plastics film, metal foil, metallised plastic, metal wire.
  • These elongate elements are included in the thickness of the substrate to render imitation of documents produced therefrom more difficult. These elements help in the verification of the documents as they render the view of the documents in reflected light different from that in transmitted light.
  • additional features include demetallised indicia, security printing, magnetic properties, electrical conductivities, the ability to absorb x-rays, fluorescence, optically variable effects and thermochromic behaviour.
  • windowed thread paper As a further security feature, it has been found to be particularly advantageous to provide windows in one side of the surface of the substrate, which expose such elongate elements at spaced locations. Examples of methods of manufacturing paper incorporating security elements with or without windows are described below. It should be noted that references to "windowed thread paper” include windowed paper incorporating any elongate security element.
  • EP-A-0059056 describes a method of manufacture of windowed thread paper on a cylinder mould papermaking machine.
  • the technique involves embossing the cylinder mould cover to form raised regions and bringing an impermeable elongate security element into contact with the raised regions of the mould cover, prior to the contact entry point into a vat of aqueous paper stock. Where the impermeable security element makes intimate contact with the raised regions of the embossing, no fibre deposition can occur.
  • water is extracted from the wet fibre mat and the paper is passed through a drying process. In the finished paper the contact points are present as exposed regions which ultimately form windows, visible in reflected light, on one side of the paper, which is most often used as banknote paper.
  • the exposed regions of the elongate element can be used to display indicia or overt security features, it is considered to be an advantage in some applications to expose as big a surface area of the element as possible.
  • EP-A-0070172 proposes an alternative method of making paper having an elongate security element embedded therein, providing elements which have regions of permeability and regions of impermeability. This method enables much wider element to be embedded in paper. When incorporated into paper on a cylinder mould making machine, the permeable regions are embedded in the thickness of the paper and the less permeable regions are exposed at one surface thereof. This method can be used for elongate elements having a width from 0.5mm to the full width of the sheet, which could be 5000mm.
  • EP-A-0229645 describes a method using two cylinder moulds to produce two separate plys of paper, with a security thread introduced in between the two layers.
  • the option of incorporating holes in both layers by, for example, incorporating drainage restriction devices on the mould covers is disclosed in the specification.
  • the resulting holes can be registered to produce windows on each side of the thread.
  • This method has a major drawback in that the two cylinder moulds need to be exactly the same diameter and linked by a registration system which renders production of the paper extremely expensive. This document also fails to teach how to actually achieve registration.
  • the invention therefore provides a method of making a fibrous substrate comprising the steps of bringing a first surface of an elongate flexible impermeable element into contact with primary window forming means provided on a moving cylinder mould support surface, bringing secondary window forming means provided on a secondary moving surface into contact with an opposing surface of the element, depositing fibres onto the support surface and element to form a fibrous substrate, the deposition of fibres being carried out in such a manner that as the fibres are deposited onto the support surface the elongate element is incorporated in the substrate, wherein a first set of windows is formed in one surface of the substrate at the point of contact of the element with the primary window forming means, in which windows the element is at least partially exposed, and a second set of windows as formed in an opposing surface of the substrate in which the elongate element is also at least partially exposed.
  • the invention also provides apparatus for making a fibre substrate comprising a moving cylinder mould support surface provided with primary window forming means, means for bringing an elongate flexible impermeable element into contact with said primary window forming means, and a secondary moving surface provided with secondary window forming means, means for depositing fibres on to the support surface and element to form a fibrous substrate incorporating the elongate element, a first set of windows being formed on one surface of the substrate at the point of contact of the element with the primary window forming means in which windows the element is at least partially exposed, the secondary moving surface being located such that the secondary window forming means rotate in contact with a second surface of the elongate element, such that a second set of windows is formed in an opposing surface of the substrate in which the elongate element is also at least partially exposed.
  • the method of manufacturing a fibrous substrate incorporating as elongate element is illustrated with reference to Figs. 1 and 2.
  • the method used is a cylinder mould process, such as in described EP-A-0059056.
  • a porous support surface, in the form of a cylinder mould cover 10, is produced in a known way.
  • the mould cover 10 has raised portions 12 (see Fig. 2), formed by embossing.
  • the raised portions 12 are spaced around the mould cover 10 and intimate contact of an impermeable elongate security element 11 therewith restricts the draining of the water content of the paper slurry through the mould cover 10 at the points of contact. This prevents or substantially reduces the deposition of fibres and defines the shape of the windows 14 formed in the final substrate 16.
  • the term "window” includes a transparent or translucent region in the substrate of a predefined shape and occurrence.
  • the cylinder mould cover 10 is rotated in a vat of fibrous stock 10 as illustrated in Figure 1, and fibres are continuously deposited thereon in a known manner to form a continuous web of substrate 16.
  • the stock 18 may comprise fibres of natural materials, such as cotton, synthetic fibres or a mixture of both.
  • a flexible elongate impermeable element 11 is brought into contact with the raised portions 12 of the cylinder mould cover 10 above the level of the stock, i.e. before any fibres have been deposited on the mould cover 10.
  • the mould cover 10 rotates, the elongate element 11 is introduced into the stock, and is partially embedded in the substrate as it forms.
  • the fibres deposit in the valleys between raised portions 12 to form bridges 20, under which the element 11 is embedded, between the windows 14 formed at the point of contact between the element 11 and raised portions 12.
  • the continuous fibrous substrate (or web) is moved along continuously as it is formed, its direction of travel being known as the "machine direction".
  • the method of the present invention requires the use of an additional moving belt 25 which is located, as shown in Fig. 4 such that a length, such as an upper run 27 of the belt is in contact with the substrate being formed.
  • the belt 25 is a continuous belt, which preferably runs around a pair of rollers 26, with the upper run 27 following the same directional path as the cylinder mould cover 10 and moving at the same speed.
  • the belt 25 returns along the lower run 28.
  • the belt 25 is provided with raised portions 29, which are similar to the raised portions 12 of the cylinder mould cover 10. The raised positions 29 are brought into contact with an opposing (rear) surface of the elongate element 11 to the (front) surface which is in contact with the raised portions 12 on the cylinder mould cover 10 above the level of the stock 18.
  • the belt 25 is at least partly impermeable, for example comprising or having regions of metal or rubber, which prevents the fibres from depositing at the intimate points of contact between the raised portions 29 and element 11.
  • the dimensions and location of the belt 25 may be selected so that the raised portions 29 contact the rear surface of the element 11 in synchronization with the contact between the raised regions 12 and the front surface of the element 11, which produces windows 14a,14b in each side of the substrate 16 in perfect register, as show in Fig. 5.
  • they can be selected so that the raised portions 29 contact the rear surface of the element 11 at points where there is no contact on the front surface of the element 11 with raised portions 12. This leads to alternating the windows, such as shown in Fig. 6, in which the windows 14a are formed in one surface of the substrate 16 and the windows 14b are formed in the opposing surface.
  • Bridges 20a,20b are formed between the windows 14a,14b respectively.
  • substrates made according to the present invention are advantageous in that it is possible to increase the exposure of the element 11, not just on one surface of the substrate, but two sides, which means that it can be used to its best extent. This is important because these elements 11 can be expensive to provide.
  • the cylinder mould cover 10 may be laid out according to three alternative methods:-
  • the belt 25, when used to form windows 14b on the rear surface of the substrate 16 registered to the windows 14a, on the front surface needs to have a length that is the same as the 1-2 sheet pattern it is superimposed on. In the case of the 1-2 layout, only mould covers 10 designed to produce an even number of sheets can be used.
  • the belt 25 needs to be registered to either the repeat length of the front side window 14a the repeat length of the note, the repeat length of the 1 sheet or the repeat length of the 2 sheet.
  • it may be constructed in a modular fashion, using a similar principal to that of a bicycle chain. The length can then be adjusted to suit whichever product is being manufactured.
  • a "sprocket" embossing can be produced in a margins of the mould cover 10 which is used to drive the rollers 26.
  • This is an embossing that mirrors the mould cover layout and will have a special band running over it which has the same window forming layout as the belt 25.
  • window forming means that sit within the cover embossings as opposed to over the embossings, as is the case with a normal window forming means, to enable it drive the belt 25.
  • Registration may also be achieved by electronic sensor connected to an electric drive that drives the rollers 26 and is linked to a registration mark on the cylinder mould 10.
  • a spray 30 may be provided downstream of the cylinder mould cover 10 to wash the belt 25 as it separates away from the substrate 11.
  • the belt 25 may be wider than the security element 11. If the rear side windows 14b are coincident with the front side windows 14a, a hole will be created on either side of the element 11.
  • the width of the belt 25 may be the same width as the security element 11. In this case the security element 11 is windowed across its entire breadth, but the belt 25 does not cause thinner, or aperture, zones adjacent security element 11.
  • the belt 25 may be narrower than the security element 11, such that the security element 11 is windowed only in an area covering part of its breadth.
  • the security element 11 and the belt 25 may have a guiding device to ensure that they meet at a predetermined position across the width of the cylinder mould 10.
  • figure 4 shows the belt 25 returning to the front of the vat within the vat, it is possible for it to return beneath the vat, or alternatively on either or both sides of the cylinder mould 10 above the level of the stock 18. This can be achieved using a series of appropriately positioned pulleys or guides.
  • the raised portions 29 on the belt 25 may be bars or bars at an angle. They may also be in the form of other shapes, such as triangles or stars. Furthermore, they may also be in the form of narrower windows 14b than the security element 11. In addition, the rear side windows 14b may also have a greater or lesser pitch than the front side windows 14a.
  • the elongate elements 11 are preferably made of clear polyester although other materials may be used, such as polyethylene or polypropylene, and may have a constant or variable width.
  • Elongate security elements 11 typically have a layer of adhesive, which help the embedment within the substrate.
  • the elongate elements 11 can contain a wide variety of known security features which may include the following:-
  • the security elements 11 may be oriented, which means that each side of the element 11 may carry different information, materials or optical effects. Examples include:-
  • the substrate described above can be cut and printed to make all forms of documents, including security documents, such as banknotes, cheques, travellers cheques, identity cards, passports, bonds, security labels, stamps, vouchers etc.
  • security documents such as banknotes, cheques, travellers cheques, identity cards, passports, bonds, security labels, stamps, vouchers etc.

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EP05255210A 2004-08-27 2005-08-24 Verfahren zur Herstellung eines Streifen enthaltenden Faserstoffsubstrats Withdrawn EP1630285A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB0419157.3A GB0419157D0 (en) 2004-08-27 2004-08-27 A method of manufacturing a fibrous substrate incorporating an elongate element

Publications (2)

Publication Number Publication Date
EP1630285A2 true EP1630285A2 (de) 2006-03-01
EP1630285A3 EP1630285A3 (de) 2007-01-03

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EP05255210A Withdrawn EP1630285A3 (de) 2004-08-27 2005-08-24 Verfahren zur Herstellung eines Streifen enthaltenden Faserstoffsubstrats

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EP (1) EP1630285A3 (de)
GB (2) GB0419157D0 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007071937A2 (en) 2005-12-20 2007-06-28 De La Rue International Limited Method of manufacturing security substrates
FR2935995A1 (fr) * 2008-09-18 2010-03-19 Arjowiggins Security Procede de fabrication d'un jet a base de matiere fibreuse utilisant une bande disposee dans une cuve et document comportant un tel jet.
EP3421663A1 (de) 2017-06-29 2019-01-02 KBA-NotaSys SA Verfahren zur verarbeitung einer substratbahn in einzelbögen zur herstellung von sicherheitsdokumenten und anlage zur durchführung des verfahrens
WO2020064230A1 (de) 2018-09-26 2020-04-02 Koenig & Bauer Ag Verfahren zum teilen und kategorisieren zumindest eines substrats und eine substratkategorisierungsmaschine

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1552853A (en) 1976-09-24 1979-09-19 Bank Of England Authentication devices
EP0059056A1 (de) 1981-02-19 1982-09-01 Portals Limited Verfahren zur Herstellung eines Bogens aus Faserstoffen
EP0070172A1 (de) 1981-07-13 1983-01-19 Portals Limited Ein teilweise eingeschlossenes Band enthaltendes Papier, Verfahren zur Papierherstellung und Sicherheitsdokument
EP0227423A2 (de) 1985-12-23 1987-07-01 Flex Products, Inc. Optische Schuppen aus dünnem Film, nachgebildeter optischer Überzug sowie Überzüge und diese enthaltende Tinten sowie Verfahren dafür
EP0229645A1 (de) 1986-01-16 1987-07-22 GAO Gesellschaft für Automation und Organisation mbH Verfahren zur Herstellung eines Sicherheitspapiers mit eingelagertem Sicherheitselement
EP0435029A2 (de) 1989-12-22 1991-07-03 GAO Gesellschaft für Automation und Organisation mbH Datenträger mit einem Flüssigkristall-Sicherheitselement
EP0863815A1 (de) 1995-11-27 1998-09-16 Giesecke & Devrient GmbH Datenträger mit optisch variabler farbe
GB2375078A (en) 2001-04-30 2002-11-06 Rue De Int Ltd Security substrate with indicia only viewable in transmitted light

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2141837T3 (es) * 1993-09-28 2000-04-01 Arjo Wiggins Sa Papel de seguridad que presenta una zona transparente de opacidad sensiblemente nula.
US5937719A (en) * 1996-06-27 1999-08-17 Wilson Manufacturing Company Rotary punch
GB2388377B (en) * 2002-05-09 2004-07-28 Rue De Int Ltd A paper sheet incorporating a security element and a method of making the same
GB0228423D0 (en) * 2002-12-05 2003-01-08 Rue De Int Ltd Improvements in manufacturing substrates

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1552853A (en) 1976-09-24 1979-09-19 Bank Of England Authentication devices
EP0059056A1 (de) 1981-02-19 1982-09-01 Portals Limited Verfahren zur Herstellung eines Bogens aus Faserstoffen
EP0070172A1 (de) 1981-07-13 1983-01-19 Portals Limited Ein teilweise eingeschlossenes Band enthaltendes Papier, Verfahren zur Papierherstellung und Sicherheitsdokument
EP0227423A2 (de) 1985-12-23 1987-07-01 Flex Products, Inc. Optische Schuppen aus dünnem Film, nachgebildeter optischer Überzug sowie Überzüge und diese enthaltende Tinten sowie Verfahren dafür
EP0229645A1 (de) 1986-01-16 1987-07-22 GAO Gesellschaft für Automation und Organisation mbH Verfahren zur Herstellung eines Sicherheitspapiers mit eingelagertem Sicherheitselement
EP0435029A2 (de) 1989-12-22 1991-07-03 GAO Gesellschaft für Automation und Organisation mbH Datenträger mit einem Flüssigkristall-Sicherheitselement
EP0863815A1 (de) 1995-11-27 1998-09-16 Giesecke & Devrient GmbH Datenträger mit optisch variabler farbe
GB2375078A (en) 2001-04-30 2002-11-06 Rue De Int Ltd Security substrate with indicia only viewable in transmitted light

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007071937A2 (en) 2005-12-20 2007-06-28 De La Rue International Limited Method of manufacturing security substrates
DE112006003410T5 (de) 2005-12-20 2009-01-02 De La Rue International Ltd., Basingstoke Verbesserungen in Verfahren zur Herstellung von Sicherheitssubstraten
FR2935995A1 (fr) * 2008-09-18 2010-03-19 Arjowiggins Security Procede de fabrication d'un jet a base de matiere fibreuse utilisant une bande disposee dans une cuve et document comportant un tel jet.
WO2010038163A1 (fr) * 2008-09-18 2010-04-08 Arjowiggins Security Procede de fabrication d'un jet a base de matiere fibreuse utilisant une bande disposee dans une cuve
EP3421663A1 (de) 2017-06-29 2019-01-02 KBA-NotaSys SA Verfahren zur verarbeitung einer substratbahn in einzelbögen zur herstellung von sicherheitsdokumenten und anlage zur durchführung des verfahrens
WO2020064230A1 (de) 2018-09-26 2020-04-02 Koenig & Bauer Ag Verfahren zum teilen und kategorisieren zumindest eines substrats und eine substratkategorisierungsmaschine

Also Published As

Publication number Publication date
GB2417496B (en) 2006-11-08
GB0419157D0 (en) 2004-09-29
EP1630285A3 (de) 2007-01-03
GB2417496A (en) 2006-03-01
GB0517442D0 (en) 2005-10-05

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