EP1017033B1 - Elément pour la protection électronique d'articles et procédé de fabrication - Google Patents

Elément pour la protection électronique d'articles et procédé de fabrication Download PDF

Info

Publication number
EP1017033B1
EP1017033B1 EP99114809A EP99114809A EP1017033B1 EP 1017033 B1 EP1017033 B1 EP 1017033B1 EP 99114809 A EP99114809 A EP 99114809A EP 99114809 A EP99114809 A EP 99114809A EP 1017033 B1 EP1017033 B1 EP 1017033B1
Authority
EP
European Patent Office
Prior art keywords
conducting track
area
security element
track
critical
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
EP99114809A
Other languages
German (de)
English (en)
Other versions
EP1017033A2 (fr
EP1017033A3 (fr
Inventor
Richard Altwasser
Peter Lendering
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.)
Meto International GmbH
Original Assignee
Meto International GmbH
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 Meto International GmbH filed Critical Meto International GmbH
Publication of EP1017033A2 publication Critical patent/EP1017033A2/fr
Publication of EP1017033A3 publication Critical patent/EP1017033A3/fr
Application granted granted Critical
Publication of EP1017033B1 publication Critical patent/EP1017033B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00Burglar, theft or intruder alarms
    • G08B13/22Electrical actuation
    • G08B13/24Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2428Tag details
    • G08B13/2437Tag layered structure, processes for making layered tags

Definitions

  • the invention relates to a securing element for electronic article surveillance, consisting of a lower and an upper conductor track, each with at least one winding, the two conductor tracks being wound in opposite directions, overlapping in at least one overlap area and a dielectric layer in the overlap area between the two conductor tracks is provided.
  • a corresponding securing element has become known, for example, from DE 197 08 180 A1.
  • Such fuse elements are referred to as resonant resonant circuits or as resonant frequency fuse elements, the resonant frequency being determined by the capacitance C, the inductance L and the resistance R of the resonant circuit.
  • Resonance frequency security elements are used in the form of labels or tags to prevent and detect theft in department stores and warehouses and are becoming increasingly popular due to the high detection rate.
  • the article security itself can be briefly described as follows:
  • the resonance frequency securing elements are designed to be deactivated. Deactivation takes place as soon as the secured goods have been properly purchased by a customer.
  • the method of generating a short circuit between the two layers of conductor tracks through the dielectric layer by supplying a correspondingly high energy pulse has proven itself, which leads to the destruction of the characteristic resonance properties of the resonant circuit.
  • each of the layers of conductor tracks consists of a large number of turns.
  • the two layers of conductor tracks are connected to each other via a dielectric, very thin resin layer.
  • the resin layer has a substantially constant thickness over the entire area of the layers.
  • the securing element is also deactivated here by supplying a sufficiently high energy pulse.
  • the invention has for its object to propose a security element in which the risk of reactivation after deactivation is reduced or completely eliminated.
  • the object is achieved in that the dielectric adhesive layer either has at least the same thickness in a critical region within the overlap region, in which a boundary edge of the lower conductor path overlaps with the upper conductor path or a boundary edge of the upper conductor path with the lower conductor path as in the remaining overlap area and is coated with an additional dielectric layer (4) or has a greater thickness than in the remaining overlap area.
  • ⁇ critical area areas in which a boundary edge of a conductor track is crossed by the other conductor track are particularly susceptible to reactivation if the preceding deactivation occurred in these areas. Such areas can not be avoided by the way with two conductor tracks that are wound in opposite directions. It has been found that the securing element is particularly resistant to reactivation if the sum of the lengths of the boundary edges in the critical area or in the critical areas or in the strip-shaped area is minimal.
  • securing element therefore also proposes that in the critical area or areas, in addition to the dielectric adhesive layer, a dielectric film material, a dielectric lacquer layer or an additional dielectric adhesive layer is provided as an additional dielectric layer.
  • a dielectric film material in addition to the dielectric adhesive layer, a dielectric film material, a dielectric lacquer layer or an additional dielectric adhesive layer is provided as an additional dielectric layer.
  • the greater thickness in the critical area or in the critical areas be achieved by applying a lower contact pressure to the two conductor tracks in these areas during the lamination process.
  • an advantageous embodiment of the securing element according to the invention provides that these areas essentially along one Straight lines are arranged in a strip-shaped area.
  • This strip-shaped area has a width of a few millimeters and preferably extends over the entire length of the securing element. It is of course advantageous if the width of the additional dielectric layer is matched to the width of the strip-shaped region.
  • the two conductor tracks are electrically connected to one another in an overlapping end region.
  • the electrical connection can be made in different ways. Alternative options are described in DE 197 08 180.
  • the preferred process for contacting the two conductor tracks is punching through the securing element in the region of the conductor tracks in which the electrical connection is desired.
  • a particularly favorable production process for the fuse elements according to the invention has the following process steps: a dielectric adhesive layer is applied to the lower conductor track; the critical area or areas are coated with an additional dielectric layer; the upper conductor track is then connected to the lower conductor track in the desired position.
  • the lower and the upper conductor tracks are laminated together in the critical area or in the critical areas with a reduced contact pressure. Laminating the two conductor tracks together with reduced contact pressure can also take place in combination with the arrangement of an additional dielectric layer in the critical area or in the critical areas.
  • the upper and lower conductor tracks are each arranged on a strip material according to an advantageous development of the method for producing the securing element according to the invention; the conductor tracks are arranged on the strip material in such a way that the critical areas are aligned in the machine direction; the additional dielectric layer is applied in strips to the lower or upper conductor track before the two conductor tracks are laminated together.
  • An advantageous embodiment of the method for producing the fuse elements according to the invention provides that the additional dielectric layer is sprayed or printed onto the upper or lower conductor track as a dielectric lacquer layer. If there is an additional dielectric adhesive layer, this is preferably applied to the upper or to the lower conductor track by means of extrusion.
  • FIG. 1 shows a plan view of a lower conductor track 2, on which a dielectric adhesive layer 8 is applied
  • FIG. 2 shows a plan view of an upper conductor track 3.
  • the two conductor tracks 2, 3 according to the invention shown in FIG. 3 are used Securing element 1 together.
  • the conductor tracks are punched out of an aluminum foil.
  • the manufacturing method for manufacturing the fuse element 1 according to the invention is relatively inexpensive, since the two conductor tracks 2, 3 are relatively wide and essentially only have one turn. Because of the dimensions, the securing element according to the invention is also characterized by a high degree of stability.
  • the two conductor tracks 2, 3 each consist of one turn and are wound in opposite directions.
  • boundary edges 5 of the lower conductor track 2 are crossed by the upper conductor track 3.
  • the securing element 1 shown in FIG. 3 has three critical areas 7, in which boundary edges 5 of the lower interconnect 2 are crossed by the upper interconnect 3.
  • the securing element shown in FIG. 3 is now designed in such a way that these three critical areas 7 come to lie essentially along a straight line in a narrowly delimited strip-shaped area.
  • an additional dielectric layer 4 is inserted, or instead the two conductor tracks 2, 3 are applied in the critical areas with a reduced contact pressure laminated together so that the dielectric adhesive layer 8 has a greater thickness in the critical area than in the remaining overlap area.
  • the additional dielectric layer 4 is a dielectric film material which is preferably made of PET.
  • dielectric lacquers or dielectric adhesives can also be used instead.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Fuses (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
  • Read Only Memory (AREA)
  • Laminated Bodies (AREA)

Claims (12)

  1. Elément pour la protection électronique d'articles, se composant d'une piste conductrice inférieure et d'une piste conductrice supérieure avec chacune au moins une spire, selon lequel les deux pistes conductrices sont enroulées en sens inverse, selon lequel les deux pistes conductrices (2, 3) se chevauchent sur au moins une zone de chevauchement et selon lequel une couche de liaison diélectrique (8), prévue dans la zone de chevauchement entre les deux pistes conductrices (2, 3), relie entre elles ces deux pistes conductrices (2, 3), caractérisé en ce que la couche de liaison diélectrique (8) présente, dans une zone critique (7) à l'intérieur de la zone de chevauchement, dans laquelle un bord limite (5) de la piste conductrice inférieure (2) chevauche la piste conductrice supérieure (3) ou bien un bord limite de la piste conductrice supérieure (3) chevauche la piste conductrice inférieure (2), soit au moins la même épaisseur que dans le reste de la zone de chevauchement tout en étant recouverte d'une couche diélectrique supplémentaire (4), soit une épaisseur plus grande que dans le reste de la zone de chevauchement.
  2. Elément de protection selon la revendication 1, caractérisé en ce que la couche diélectrique supplémentaire (4) est un film diélectrique, une couche de peinture diélectrique ou une couche de liaison diélectrique supplémentaire.
  3. Elément de protection selon la revendication 2, caractérisé en ce que ce film diélectrique est du PET.
  4. Elément de protection selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les deux pistes conductrices sont soumises à une plus faible pression de serrage dans la zone critique (7) pendant le processus de production.
  5. Elément de protection selon l'une quelconque des revendications 1 à 4, caractérisé en ce que, dans le cas où plusieurs zones critiques (7) sont présentes, dans lesquelles un bord limite de la piste conductrice inférieure (2) chevauche la piste conductrice supérieure (3) ou bien un bord limite de la piste conductrice supérieure (3) chevauche la piste conductrice inférieure (2),ces zones critiques (7) sont disposées en principe le long d'une droite dans une zone en forme de bande.
  6. Elément de protection selon la revendication 5, caractérisé en ce que la somme des longueurs des bords limites (5) dans la zone en forme de bande est minimale.
  7. Elément de protection selon la revendication 5 ou 6, caractérisé en ce que la largeur de la couche diélectrique supplémentaire (4) concorde avec la largeur de la zone en forme de bande et qu'elle s'étend de préférence sur toute la longueur de l'élément de protection (1).
  8. Elément de protection selon l'une quelconque des revendications 1 à 7, caractérisé en ce que les deux pistes conductrices (2, 3) sont reliées électriquement entre elles dans une zone terminale de chevauchement (6).
  9. Procédé de fabrication d'un élément de protection selon l'une quelconque des revendications 1 à 8, caractérisé en ce qu'une couche de liaison diélectrique (8) est posée sur la piste conductrice inférieure (2) et en ce que la(les) zone(s) critique(s) (7) est(sont) recouverte(s) d'une couche diélectrique supplémentaire (4) et/ou en ce que la piste conductrice inférieure (2) et la piste conductrice supérieure (3) sont laminées ensemble avec une pression de serrage réduite dans la(les) zone(s) critique(s) (7), la piste conductrice supérieure (3) étant laminée avec la piste conductrice inférieure (2) dans la position souhaitée.
  10. Procédé selon la revendication 9, caractérisé en ce que, en cas de fabrication mécanique, la piste conductrice supérieure (3) et la piste conductrice inférieure (2) sont disposées chacune sur un feuillard, qu'elles sont disposées sur le feuillard de telle sorte que les zones critiques (7) sont orientées dans le sens de la marche des machines et que la couche diélectrique supplémentaire (4) est posée sous forme de bandes sur la piste conductrice inférieure (2) ou sur la piste conductrice supérieure (3), avant que les deux pistes conductrices (2 , 3) soient laminées ensemble.
  11. Procédé selon la revendication 9 ou 10, caractérisé en ce que la couche diélectrique supplémentaire (4) est une couche de peinture diélectrique, dispersée ou appliquée sur la piste conductrice supérieure (3) ou sur la piste conductrice inférieure (2).
  12. Procédé selon la revendication 9 ou 10, caractérisé en ce que la couche diélectrique supplémentaire (4) est une couche de liaison diélectrique, extrudée sur la piste conductrice supérieure (3) ou sur la piste conductrice inférieure (2).
EP99114809A 1998-12-14 1999-07-29 Elément pour la protection électronique d'articles et procédé de fabrication Expired - Lifetime EP1017033B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19857583A DE19857583A1 (de) 1998-12-14 1998-12-14 Sicherungselement für die elektronische Artikelsicherung und Verfahren zur Herstellung eines Sicherungselementes
DE19857583 1998-12-14

Publications (3)

Publication Number Publication Date
EP1017033A2 EP1017033A2 (fr) 2000-07-05
EP1017033A3 EP1017033A3 (fr) 2001-04-11
EP1017033B1 true EP1017033B1 (fr) 2003-09-10

Family

ID=7891001

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99114809A Expired - Lifetime EP1017033B1 (fr) 1998-12-14 1999-07-29 Elément pour la protection électronique d'articles et procédé de fabrication

Country Status (9)

Country Link
US (1) US6394357B1 (fr)
EP (1) EP1017033B1 (fr)
JP (1) JP3964084B2 (fr)
AT (1) ATE249667T1 (fr)
AU (1) AU741785B2 (fr)
DE (2) DE19857583A1 (fr)
DK (1) DK1017033T3 (fr)
ES (1) ES2207088T3 (fr)
NO (1) NO996159L (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59913807D1 (de) * 1998-06-23 2006-10-12 Meto International Gmbh Identifizierungselement
JP2003529163A (ja) * 2000-03-28 2003-09-30 ルカトロン アーゲー 共振周波数を調整する部材を有するrfidラベル
US7355516B2 (en) * 2004-12-23 2008-04-08 Checkpoint Systems, Inc. Method and apparatus for protecting culinary products
CN102203797B (zh) * 2008-11-04 2016-03-09 T-塔齐国际有限责任公司 信息载体、信息载体组及使用方法、识别***及使用方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5291180A (en) * 1981-10-30 1994-03-01 Reeb Max E LC structure useful in radio frequency security systems
DE3221500A1 (de) * 1982-06-07 1983-12-08 Max-E. Dipl.-Ing. 7320 Göppingen Reeb Identifizierungsanordnung in form eines an einem gegenstand anbringbaren gebildes und verfahren zur herstellung
US5276431A (en) * 1992-04-29 1994-01-04 Checkpoint Systems, Inc. Security tag for use with article having inherent capacitance
US5405702A (en) * 1993-12-30 1995-04-11 Minnesota Mining And Manufacturing Company Method for manufacturing a thin-film EAS and marker
US5444223A (en) * 1994-01-11 1995-08-22 Blama; Michael J. Radio frequency identification tag and method
US5751256A (en) * 1994-03-04 1998-05-12 Flexcon Company Inc. Resonant tag labels and method of making same
US5574431A (en) * 1995-08-29 1996-11-12 Checkpoint Systems, Inc. Deactivateable security tag
DE19604746A1 (de) * 1996-02-09 1997-08-14 Esselte Meto Int Gmbh Sicherungselement für die elektronische Artikelsicherung
US5800724A (en) * 1996-02-14 1998-09-01 Fort James Corporation Patterned metal foil laminate and method for making same
NL1003100C2 (nl) * 1996-05-14 1997-11-18 Nedap Nv Beveiligingsetiket met verhoogde gevoeligheid.
DE19705723A1 (de) * 1996-08-06 1998-02-12 Esselte Meto Int Gmbh Sicherungselement für die elektronische Artikelsicherung
DE19708180A1 (de) * 1996-11-04 1998-05-07 Esselte Meto Int Gmbh Sicherungselement für die elektronische Artikelüberwachung
AU723358B2 (en) * 1996-11-04 2000-08-24 Meto International Gmbh Security element for electronic article surveillance
US6164551A (en) * 1997-10-29 2000-12-26 Meto International Gmbh Radio frequency identification transponder having non-encapsulated IC chip

Also Published As

Publication number Publication date
EP1017033A2 (fr) 2000-07-05
DK1017033T3 (da) 2003-12-29
ES2207088T3 (es) 2004-05-16
NO996159L (no) 2000-06-15
EP1017033A3 (fr) 2001-04-11
ATE249667T1 (de) 2003-09-15
NO996159D0 (no) 1999-12-13
AU741785B2 (en) 2001-12-06
JP3964084B2 (ja) 2007-08-22
AU4459399A (en) 2000-06-15
DE59906942D1 (de) 2003-10-16
JP2000194964A (ja) 2000-07-14
DE19857583A1 (de) 2000-06-15
US6394357B1 (en) 2002-05-28

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