EP0773527B1 - Aufkleber - Google Patents

Aufkleber Download PDF

Info

Publication number
EP0773527B1
EP0773527B1 EP19960308122 EP96308122A EP0773527B1 EP 0773527 B1 EP0773527 B1 EP 0773527B1 EP 19960308122 EP19960308122 EP 19960308122 EP 96308122 A EP96308122 A EP 96308122A EP 0773527 B1 EP0773527 B1 EP 0773527B1
Authority
EP
European Patent Office
Prior art keywords
adhesive label
base layer
paper
adhesive
watermark
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
EP19960308122
Other languages
English (en)
French (fr)
Other versions
EP0773527A1 (de
Inventor
Richard Bryan Jotcham
Gerald Sidney Payne
Keith Noel Brown
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.)
Portals Bathford Ltd
Original Assignee
Portals Bathford 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 Portals Bathford Ltd filed Critical Portals Bathford Ltd
Publication of EP0773527A1 publication Critical patent/EP0773527A1/de
Application granted granted Critical
Publication of EP0773527B1 publication Critical patent/EP0773527B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02—Forms or constructions
    • G09F3/0291—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time
    • G09F3/0292—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time tamper indicating labels

Definitions

  • the invention relates to an adhesive label and in particular to an adhesive label which can be used for security applications, such as an authentication certificate, means of identification or the like as proof of the authenticity or origin of an article to which it is adhered.
  • one solution is to incorporate one or more features into the document which have a different perception in reflected and transmitted light.
  • security features include watermarks, embedded security threads, fluorescent pigments and the like.
  • an adhesive label comprising a base layer having an adhesive applied to one side of the base layer, characterised in that the base layer incorporates at least one watermark feature, said watermark feature having a plurality of first and second areas which appear lighter and darker respectively than the base layer when the label is viewed in transmitted light, the perceived appearance of said first and second areas changing when the label is applied, in use, to an opaque background of a darker shade or colour than the base layer so that the first and second areas appear darker and lighter respectively.
  • an adhesive label is made with a base layer containing a watermark and applied to a background of a darker or different colour to that of the base layer there is an unexpected and surprising effect in that the watermark is visible in a modified form in reflected light.
  • Such watermarks can also be detected by touch as there is a surprising increase in the perceived variations in the surface of the adhesive label in the area of the watermark, thus providing an additional security check.
  • an adhesive label according to the present invention has wide-ranging security applications as it can be checked for authenticity before application by viewing in both transmitted and reflected light, and then in situ by viewing in reflected light only and by touch.
  • An adhesive label containing such a watermark feature provides a high degree of security because it cannot be photocopied even if the adhesive label is removed from the article to which it is attached.
  • the adhesive label further includes a backing sheet to protect the adhesive.
  • the backing sheet may be clear, translucent or light impermeable.
  • the adhesive may be clear or translucent or coloured and of a different colour to the colour of the base layer.
  • the adhesive label preferably further includes a security thread embedded partially or wholly within the base layer and/or one or more surface security features.
  • the base layer is preferably of paper.
  • the base layer is a two-ply structure formed from two substrates, a first substrate containing the watermark feature.
  • the first substrate is preferably of paper.
  • the second substrate is preferably coloured.
  • the second substrate may be of a material other than paper.
  • the thickness of the paper fibres at different locations within the watermark feature is up to 20% less than that of the base layer in the thinner part and up to 20% greater than that of the base layer in the thicker part.
  • the density of the paper fibres at different locations within the watermark feature is preferably up to 20% greater than the density of the base layer in the denser areas and up to 20% less in the density of the base layer in the less dense areas.
  • the constituents of the base layer may be natural, synthetic or a combination of natural and synthetic.
  • the watermark feature preferably provides a tactile effect when the label is applied, in use, to a background.
  • FIGs 1 and 2 there is shown an adhesive label 10 formed from a paper base layer 11.
  • the paper base layer 11 contains one or more watermark features 12, 13. Two such features are illustrated in Fig. 1, one being a pictorial image 12 (of an abstract rectangular pattern) and the other watermark bars 13.
  • the adhesive label 10 has an adhesive layer 20 on one surface 21, hereinafter referred to as the rear surface 21 of the adhesive label 10.
  • the watermarked paper base layer 11 may be made using known papermaking machines such as a cylinder mould or Fourdrinier machine or it may even be hand-made.
  • a range of fibre types can be used in the making of such paper including synthetic or natural fibres or a mixture of both.
  • the actual preparation of the fibre is unrestricted depending on what effect it is wished to produce in the finished paper. This is contrary to the accepted procedures for making security paper for documents such as banknotes, passports, identification cards and so on which needs to be hardwearing, resilient and self-supporting.
  • a watermark is created by varying the density of paper fibres so that in some areas (e.g.23) the fibres are denser and in others (e.g.22) less dense than that of the base paper layer 11. When viewed in transmitted light the less dense areas are lighter and the denser areas darker than the base paper, and the contrasts can be seen very clearly.
  • the actual grammage of the paper within the watermark 12, 13 thus has a significant effect on the clarity of the watermark 12, 13 especially when included in an adhesive label 10 applied to a background.
  • the varying density of the paper fibres affects the visibility of the watermark 12, 13, in both reflected and transmitted light the varying thickness of the paper has an effect on the tactility of the watermark 12, 13 whereby raised or thicker areas (e.g.23)can be felt where the fibres are denser.
  • the density of fibres can be varied by varying the relative depth in the watermarking dies so that the relative quantity of fibres deposited in different areas of the watermark differ dramatically.
  • the density of the paper can also be affected by adding other components to the papermaking furnish, such as fillers which change the opacity of the paper.
  • fillers which change the opacity of the paper.
  • areas (e.g. 23) with more fibres made from a furnish including fillers will appear much more opaque than those areas with fewer such filler fibres (e.g.22) or indeed paper without such fillers.
  • Colouring the paper base layer 11 also affects the visibility of the watermark and the depth of clarity between the thick and thin areas
  • the thickness of the paper base layer 11 for making an adhesive label 10 according to the present invention will be in the range of 70 to 150 microns and preferably 115 microns.
  • the thicknesses of the paper within the watermark could vary by plus or minus 20% of the base thickness, i.e. up to 20% thinner within the lighter areas (e.g. 22)and up to 20% thicker in the darker areas (e.g. 23).
  • This range of variation is usually avoided in watermarks in security paper as the paper is weakened by such variation and processes such as calendaring or intaglio printing can damage the paper or the watermark image causing pin holing or crushing.
  • Paper having watermarks with such a varying range of thicknesses could not be used for banknotes or other similar security documentation which must be hardwearing and resilient due to their continuous handling.
  • this is not a disadvantage as the adhesive label 10 is supported by its backing, before application, or by the article to which it is adhered, after application.
  • this weakness in the paper 11 is likely to lead to tearing, thus providing a tamper-proof feature.
  • the preferred grammage of the paper base layer 11 is 90gsm.
  • the denser areas 23 of the watermark feature 12, 13 are 20% more dense than the non-watermark areas of the paper base layer 11 and the lighter areas 22 of the watermark feature 12 are 20% less dense than the non-watermark areas of the paper base layer 11.
  • the grammage of the paper base layer 11 may vary from 55 to 120gsm.
  • the use of pictorial images as watermarks is fairly common in many security documents and the rectangular device 12 shown in Figure 1 could be easily replaced by a representation of a head, an animal or any pictorial image whatsoever.
  • the other type of watermark feature shown in Fig. 1, the watermark bars 13, are created when paper is made with a security thread 14 embedded within the paper. Such paper can be made by a method such as that described in patent EP 0059056, where the security thread is exposed at regular intervals in windows in the surface of the paper. In the watermark bar areas 13 between the windows, the fibres are denser than in the non-watermark regions of the base paper layer 11. These can be made to appear as regular or irregular bars as preferred.
  • the watermark bars, when the adhesive label 10 is applied to a supporting surface reflect the original colour of the adhesive label 10, whereas the base paper layer 11 takes up the colour of the background.
  • the adhesive layer 20 on the back of the adhesive label 10 can be a layer of any suitable adhesive applied in a variety of forms, including a water activated gum, a self-adhesive coating with a protective silicone backing, a double-sided tape or sheet.
  • the adhesive itself may be ultra violet curable, pressure sensitive, permanent or a repositionable adhesive.
  • the adhesive composition dictates the thickness of the adhesive.
  • the label 10 has a backing paper 25 which is used to protect the label 10 before it is applied to the article.
  • a clear or highly translucent backing may be used, then this enables the watermarks 12, 13 and any other security feature to be checked in transmitted as well as reflected light before the backing paper 25 is removed and before application of the label.
  • a non-translucent backing paper 25 may also be used, which requires the removal of the backing paper 25 before the label 10 can be checked before application.
  • the adhesive label 10 provides a two-fold test for its authentication before it is applied to an article, as well as providing security features which can be checked once applied. These include the visible watermark image when examined in reflected light and the tactile effect resulting from the varying thicknesses of the paper within the watermark. This tactile effect is more significant when the surface of the adhered label 10 is felt than when both sides of paper containing a watermark can be felt.
  • the change to the watermark image is more significant in that the thinner areas of paper allow more colour to show through whereas the thicker areas of paper remain the colour of the base paper layer 11.
  • the intensity of the colour of the background enhances the intensity of the effect.
  • a range of random colours beneath the watermark features 12, 13 can cause a range of pastel colours to be transmitted which is particularly difficult to counterfeit.
  • an adhesive label 10 is applied to a background which is the same colour as the base paper 11, then the watermark feature 12 becomes invisible and cannot be viewed in reflected light. However, the tactile effect still remains.
  • the adhesive layer 20 may be coloured or ultra violet fluorescent.
  • a re-positionable adhesive may be used to allow the adhesive label 10 to be removed and checked in transmitted light. This embodiment of the invention may be unsuitable for some applications, such as certificates of authenticity, but may have other applications.
  • a pictorial image 12 can be very detailed and complex which significantly reduces the risk of counterfeiting.
  • the watermark bars 13 provide a more startling visible effect and can be verified at a greater distance than the more subtle pictorial image 12.
  • the watermark bars 12, 13 also provide a greater tactile effect than the pictorial image 12. It is thus envisaged that, although the adhesive label 10 may have just one watermark feature, a combination of different watermark features may be used to provide enhanced security.
  • the base paper layer 11 of the adhesive label 10 may be single or two-ply paper.
  • Two-ply paper is generally made using two separate vats of papermaking furnish which produce two substrates which are compressed together to form a finished paper.
  • twin-ply paper is used, where one substrate 30 is made from a non-coloured furnish, this being the substrate which contains the watermark feature and a second substrate 31 is made from a coloured furnish.
  • An adhesive label 35 made from such two colour paper is particularly suitable for applications where the background colour of the article to which the adhesive label 35 is applied is likely to be the same as the uncoloured part of the base paper. This ensures that the watermark is visible once the adhesive label 35 has been applied to the article.
  • a two-ply adhesive label 45 can also be made according to the present invention in which second-ply 40 (see Figure 5) which does not include the watermark is not made from paper but could be a clear or a coloured film (e.g. of plastic).
  • the present invention is also highly compatible with many other security features to enhance the security of the adhesive label 10.
  • a wide range of different types of security thread can be used, including holographic threads, demetallised threads, demetallised holographic threads, fluorescent threads, thermochromic threads, coloured/metallised threads, machine-readable threads, optically variable threads and microprinted threads.
  • holographic threads demetallised threads
  • demetallised threads demetallised holographic threads
  • fluorescent threads thermochromic threads
  • thermochromic threads thermochromic threads
  • coloured/metallised threads coloured/metallised threads
  • machine-readable threads optically variable threads and microprinted threads.
  • planchette bands may also be included such as planchette bands, fibre bands, iridescent coatings and transparentising coatings and print.
  • Adhesive labels 10 are also compatible within any known forms of printing such as intaglio, flexo-gravure, ink jet, hot foil stamping and so on.
  • the adhesive labels 10 may also have a glossy or other finish which is clear or translucent.
  • Such adhesive labels 10 may have a wide range of uses especially as certificates of origin or authentication, and in particular in fields where counterfeiting of the products to which the adhesive labels 10 are attached is or may be rife, such as high value added or fast moving consumer goods.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Credit Cards Or The Like (AREA)
  • Adhesive Tapes (AREA)
  • Paper (AREA)
  • Laminated Bodies (AREA)

Claims (16)

  1. Aufkleber (10; 35; 45) mit einer Basisschicht (11), wobei auf einer Seite der Basisschicht (11) ein Klebstoff (20) aufgebracht ist,
    dadurch gekennzeichnet, daß in der Basisschicht (11) wenigstens ein Wasserzeichen (12) ausgebildet ist, wobei das Wasserzeichen (12) eine Anzahl von ersten (22) und zweiten (23) Flächen hat, die heller bzw. dunkler als die Basisschicht (11) erscheinen, wenn der Aufkleber (10, 35; 45) in der Durchsicht betrachtet wird, wobei der Eindruck des Erscheinungsbildes der ersten (22) und zweiten (23) Flächen sich ändert, wenn der Aufkleber (10; 35; 45) bei Verwendung auf einen opaquen Hintergrund aufgebracht ist, der eine etwas dunklere Schattierung oder Farbnuance als die Basisschicht (11) hat, so daß die ersten (22) und zweiten (23) Flächen dunkler bzw. heller erscheinen.
  2. Aufkleber (10; 35; 45) nach Anspruch 1,
    wobei der Aufkleber (10; 35; 45) weiterhin eine rückseitige Folie (25) zum Schutz des Klebstoffes (20) hat.
  3. Aufkleber (10; 35; 45) nach Anspruch 1,
    wobei die rückseitige Folie (24) klar oder lichtdurchlässig ist.
  4. Aufkleber (10; 35; 45) nach Anspruch 2,
    wobei die rückseitige Folie (25) nicht lichtdurchlässig ist.
  5. Aufkleber (10; 35; 45) nach Anspruch 1,
    wobei der Klebstoff (20) in einer anderen Farbe als der Farbe der Basisschicht (11) gefärbt ist.
  6. Aufkleber nach Anspruch 1,
    weiterhin mit einem Sicherheitsfaden (14), der teilweise oder ganz in der Basisschicht (11) eingebettet ist.
  7. Aufkleber (10; 35; 45) nach Anspruch 1,
    weiterhin mit einem oder mehreren Oberflächensicherheitsmerkmalen (13).
  8. Aufkleber (10; 35; 45) nach Anspruch 1,
    wobei die Basisschicht (11) aus Papier besteht.
  9. Aufkleber (10; 35; 45) nach Anspruch 1,
    wobei die Basisschicht eine zweilagige Struktur ist, die aus zwei Substraten (30, 31; 40, 41) gebildet ist, wobei ein erstes Substrat (30; 41) das Wasserzeichen enthält.
  10. Aufkleber (10; 35; 45) nach Anspruch 9,
    wobei das erste Substrat (30) aus Papier besteht.
  11. Aufkleber (10; 35; 45) nach Anspruch 9,
    wobei das zweite Substrat (31; 40) gefärbt ist.
  12. Aufkleber (10; 35; 45) nach Anspruch 9,
    wobei das zweite Substrat (40) nicht aus Papier besteht.
  13. Aufkleber (10; 35; 45) nach Anspruch 1,
    wobei die Dicke der Papierfasern an unterschiedlichen Orten innerhalb des Wasserzeichens (12) in den dünneren Teilen (22) bis zu 20% geringer als die der Basisschicht (11) und in den dickeren Teilen (22) bis zu 20% größer als die der Basisschicht (11) ist.
  14. Aufkleber (10; 35; 45) nach Anspruch 1,
    wobei die Dichte der Papierfasern an unterschiedlichen Orten innerhalb des Wasserzeichens (12) in den dichteren Flächen (23) um 20% größer als die Dichte der Basisschicht (11) ist und in den weniger dichten Flächen (22) bis zu 20% geringer als die Dichte der Basisschicht (11) ist.
  15. Aufkleber nach Anspruch 1,
    wobei die Bestandteile der Basisschicht (11) natürliche, synthetische oder eine Kombination aus natürlichen und synthetischen Bestandteilen sind.
  16. Aufkleber (10; 35; 45) nach Anspruch 1,
    wobei das Wasserzeichen (12) eine taktile Wirkung erzeugt, wenn der Aufkleber (10; 35; 45) bei Verwendung auf einem Untergrund aufgebracht ist.
EP19960308122 1995-11-09 1996-11-08 Aufkleber Expired - Lifetime EP0773527B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9523015A GB2306938B (en) 1995-11-09 1995-11-09 Watermarked label
GB9523015 1995-11-09

Publications (2)

Publication Number Publication Date
EP0773527A1 EP0773527A1 (de) 1997-05-14
EP0773527B1 true EP0773527B1 (de) 1999-07-07

Family

ID=10783677

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960308122 Expired - Lifetime EP0773527B1 (de) 1995-11-09 1996-11-08 Aufkleber

Country Status (5)

Country Link
EP (1) EP0773527B1 (de)
DE (1) DE69603144T2 (de)
DK (1) DK0773527T3 (de)
ES (1) ES2135176T3 (de)
GB (1) GB2306938B (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6069955A (en) * 1998-04-14 2000-05-30 International Business Machines Corporation System for protection of goods against counterfeiting
US6502757B1 (en) * 1999-09-17 2003-01-07 Dai Nippon Printing Co., Ltd. Information recorded medium, device for reading the information, information recorded medium transfer foil, and method for producing information recorded medium
IT1320079B1 (it) * 2000-10-25 2003-11-18 Cartiere Di Cordenons S P A Materiali cartacei filigranati stampabili con elevata qualita' distampa.
GB2390593B (en) * 2002-07-12 2004-06-23 Rue De Int Ltd Labels incorporating security features
FR2941713B1 (fr) 2009-02-03 2011-04-01 Arjowiggins Security Procede de securisation d'un objet opaque colore.
CN108492713A (zh) * 2018-04-10 2018-09-04 三维码（厦门）网络科技有限公司 三维码瞳孔成像防伪系统

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2901150C2 (de) * 1979-01-12 1981-02-19 Gao Gesellschaft Fuer Automation Und Organisation Mbh, 8000 Muenchen Ausweiskarte mit im Auf- und Durchlicht prüf baren Echtheitsmerkmalen und Verfahren zu ihrer Herstellung
DE3018485C2 (de) * 1980-05-14 1982-02-11 GAO Gesellschaft für Automation und Organisation mbH, 8000 München Ausweiskarte mit im Auf- und Durchlicht prüfbaren Echtheitsmerkmalen
US4816322A (en) * 1981-11-02 1989-03-28 Dennison Manufacturing Company Anticounterfeit metallized labels
GB2268906A (en) * 1992-07-24 1994-01-26 Portals Ltd Counterfeit protection for documents using optical effects of liquid crystal
DE4314579A1 (de) * 1993-02-03 1994-08-04 Bundesrep Deutschland Aufkleber
US5488664A (en) * 1994-04-22 1996-01-30 Yeda Research And Development Co., Ltd. Method and apparatus for protecting visual information with printed cryptographic watermarks

Also Published As

Publication number Publication date
EP0773527A1 (de) 1997-05-14
HK1010762A1 (en) 1999-06-25
DK0773527T3 (da) 1999-11-22
ES2135176T3 (es) 1999-10-16
GB2306938A (en) 1997-05-14
DE69603144D1 (de) 1999-08-12
DE69603144T2 (de) 2000-02-03
GB2306938B (en) 1997-12-24
GB9523015D0 (en) 1996-01-10

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