EP0987662B2 - Method for producing security elements for the electronic protection of articles - Google Patents

Method for producing security elements for the electronic protection of articles Download PDF

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Publication number
EP0987662B2
EP0987662B2 EP99117104A EP99117104A EP0987662B2 EP 0987662 B2 EP0987662 B2 EP 0987662B2 EP 99117104 A EP99117104 A EP 99117104A EP 99117104 A EP99117104 A EP 99117104A EP 0987662 B2 EP0987662 B2 EP 0987662B2
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EP
European Patent Office
Prior art keywords
fibers
layer
soft magnetic
cellulose
elements
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Expired - Lifetime
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EP99117104A
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German (de)
French (fr)
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EP0987662B1 (en
EP0987662A2 (en
EP0987662A3 (en
Inventor
Manfred Dr. Rührig
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Meto International GmbH
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Meto International GmbH
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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic 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
    • G08B13/2405—Electronic 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 characterised by the tag technology used
    • G08B13/2408—Electronic 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 characterised by the tag technology used using ferromagnetic tags
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic 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
    • G08B13/2428—Tag details
    • G08B13/2437—Tag layered structure, processes for making layered tags
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic 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
    • G08B13/2428—Tag details
    • G08B13/2437—Tag layered structure, processes for making layered tags
    • G08B13/244—Tag manufacturing, e.g. continuous manufacturing processes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/659—Including an additional nonwoven fabric

Definitions

  • the invention relates to a method for producing securing elements for the electronic article surveillance, wherein the securing elements are made of at least two layers. Furthermore, the invention relates to a fuse element produced by the method according to the invention.
  • EP 0 340 034 B1 has already disclosed a securing element for electronic article surveillance in warehouses and department stores which contains fibers of a material with high permeability and low coercive force. These fibers are either contained in a paper substrate or they are adhered to the substrate. The orientation of the fibers in or on the substrate is entirely arbitrary, which is relatively likely to cause the fibers to overlap and magnetically couple with other fibers. This concentrates and amplifies the magnetic flux of the fibers, whereby the fuse elements described in the patent can be detected regardless of their orientation with respect to the interrogation field of the electronic article surveillance system.
  • the invention has the object to provide a method for producing cost-effective and reliable working fuse elements for electronic article surveillance.
  • the object is achieved by a method having the features specified in claim 1.
  • the advantage of the method according to the invention is primarily to be seen in the fact that the second layer with the soft magnetic fibers can be very thin, since it is supported by the first, thicker layer.
  • the second layer with the soft magnetic fibers can therefore be produced from a very dilute paper fiber suspension, which - as described in more detail below - brings enormous advantages in terms of the subsequent alignment and the processable length of the soft magnetic fibers in the still wet cellulosic material of the second layer.
  • both layers are brought together when still wet, they adhere firmly after drying without any further steps, eg. B. gluing together of both layers would be required.
  • the soft magnetic elements which are fibers with very small diameter
  • the alignment is carried out according to a particularly advantageous embodiment of the method, characterized in that above or below the layer of cellulosic material containing the soft magnetic fibers, a device is provided which generates a magnetic field in the longitudinal direction or in the running direction of the web. Since the cellulosic mass is still in a moist state at this time, the fibers are aligned under the influence of the magnetic field in the direction of travel of the web.
  • alignment of the fibers in the longitudinal direction of the web can also be forced by accelerating the layer of cellulosic material with inserted soft magnetic fibers; As a result, the fibers are likewise oriented in the longitudinal direction of the layer.
  • the fuse element for electronic article surveillance produced by the method has the features specified in claim 3.
  • the magnetic elements are fibers made of a soft magnetic material.
  • the length of the soft magnetic fibers is on average greater than 2 cm.
  • Fig. 1 shows a schematic representation of a device with which the inventive method is performed.
  • the cellulose composition 6 Via a feed device 8, the cellulose composition 6 is applied to a support surface 10.
  • the support surface 10 is e.g. around a fine-meshed endless net, which is guided over deflecting rollers 14, 15. Excess water can be removed from the cellulose composition 6 through the meshes of the net 10.
  • a second cellulose mass 5 is applied to a second bearing surface 9.
  • This support surface 9 may again be a fine-meshed endless net, which is guided over deflecting rollers 11, 12, 16. Below the deflection roller 16, the layer 3 of cellulose mass 5 is applied in a still moist state to the first layer 2 of cellulose mass 6.
  • the running direction of the material web, which consists of the layers 2, 3, is indicated in the drawing by an arrow.
  • the cellulosic material 6 of the first layer 2 consists only of cellulose fibers
  • the cellulose composition 5 of the second layer 3 is mixed with soft magnetic fibers 4.
  • the mixing ratio is a maximum of 50:50.
  • a device is arranged which generates a magnetic field in the direction of travel of the material web 2, 3.
  • the cellulose layer 5 of the second layer has only a dilute concentration of cellulose fibers. If now the still moist layer 3 is passed under the device, the soft magnetic fibers 4 have sufficient freedom of movement to orient themselves in the direction of an acting magnetic field.
  • the detection probability for the securing elements 1, which are produced from the material web 2, 3, can be increased considerably for a given concentration of soft magnetic fibers.
  • alignment of the soft magnetic fibers 4 can also be forced by mechanical action on the still wet cellulosic mass 5 containing the soft magnetic fibers 4.
  • a force component in the running direction of the material web 3 can be achieved simply by accelerating the material web 3 in the running direction.
  • Fig. 2 is a perspective view of a manufactured according to the inventive fuse element 1 can be seen.
  • the securing element 1 consists of a first layer 2, which is a cellulosic material 6, which is composed of cellulose fibers without further admixtures.
  • the second layer 3 consists of a mixture of a cellulose mass 5, which are added soft magnetic fibers 4.
  • the length of the soft magnetic fibers 4 is dimensioned so that the fibers 4 are excited in an electronic article surveillance system with high probability to emit a characteristic signal, so that subsequently an alarm is triggered.
  • the soft magnetic fibers 4 are oriented according to a development of the fuse elements 1 according to the invention substantially in one direction. This has the advantage that even with a small number of fibers 4 per fuse element 1, the characteristic signal of the fuse element can be easily detected by an article surveillance system.
  • the advantages of the security elements 1 are mentioned, which have been prepared by the process according to the invention. Since two-ply paper is used for the production of the fuse elements 1, it is possible to keep the concentration of cellulose fibers in the ply 3 containing the soft magnetic fibers 4 very low. Consequently, the concentration of the soft magnetic fibers 4 can be low, whereby the manufacturing cost of a fuse element 1 according to the invention can be kept correspondingly low.
  • Another advantage relates to the tear strength of the two-ply material web 2, 3.
  • the layer 3 with the substantially longitudinally oriented soft magnetic fibers 4 has an anisotropic tear strength. In particular, the tear strength in the direction of orientation of the fibers 4 is very low. However, since the cellulosic fibers in the first layer 2 are aligned completely arbitrarily, the web 2, 3 as such has the preferred isotropic tear strength. Furthermore, very long fibers can be used and the fibers are approximately stretched during the manufacturing process.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Burglar Alarm Systems (AREA)
  • Credit Cards Or The Like (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Electronic Switches (AREA)
  • Adornments (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
  • Paper (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

The method involves making the security elements from at least two layers. A first layer (2) of a cellulose material (6) is applied to a second layer (3) of cellulose material (5) whilst still moist. One of the two layers includes weak magnetic elements that emit a characteristic signal in the interrogation field of an article security system. The desired shape of the security element can be stamped or cut out of the two layers when dry. An Independent claim is also included for a security elements for electronic article security.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung von Sicherungselementen für die elektronische Artikelsicherung, wobei die Sicherungselemente aus zumindest zwei Lagen gefertigt sind. Weiterhin bezieht sich die Erfindung auf ein nach dem erfindungsgemäßen Verfahren hergestelltes Sicherungselement.The invention relates to a method for producing securing elements for the electronic article surveillance, wherein the securing elements are made of at least two layers. Furthermore, the invention relates to a fuse element produced by the method according to the invention.

Aus der EP 0 340 034 B1 ist bereits ein Sicherungselement für die elektronische Artikelsicherung in Lagern und Kaufhäusern bekannt geworden, das Fasern aus einem Material mit hoher Permeabilität und geringer Koerzitivkraft enthält. Diese Fasern sind entweder in einem Papiersubstrat enthalten oder sie sind auf das Substrat aufgeklebt. Die Ausrichtung der Fasern in oder auf dem Substrat ist völlig willkürlich, wodurch die Wahrscheinlichkeit relativ groß ist, daß die Fasern mit anderen Fasern überlappen und mit diesen magnetisch koppeln. Hierdurch wird der magnetische Fluß der Fasern konzentriert und verstärkt, wodurch die Sicherungselemente, die in der Patentschrift beschrieben sind, unabhängig von ihrer Orientierung bezüglich des Abfragefeldes des elektronischen Artikelsicherungssystems detektiert werden können.EP 0 340 034 B1 has already disclosed a securing element for electronic article surveillance in warehouses and department stores which contains fibers of a material with high permeability and low coercive force. These fibers are either contained in a paper substrate or they are adhered to the substrate. The orientation of the fibers in or on the substrate is entirely arbitrary, which is relatively likely to cause the fibers to overlap and magnetically couple with other fibers. This concentrates and amplifies the magnetic flux of the fibers, whereby the fuse elements described in the patent can be detected regardless of their orientation with respect to the interrogation field of the electronic article surveillance system.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Herstellung von kostengünstigen und verläßlich arbeitenden Sicherungselementen für die elektronische Artikelsicherung vorzuschlagen.The invention has the object to provide a method for producing cost-effective and reliable working fuse elements for electronic article surveillance.

Die Aufgabe wird erfindungsgemäß durch ein Verfahren mit den im Patentanspruch 1 angegebenen Merkmalen gelöst.
Der Vorteil des erfindungsgemäßen Verfahrens ist vornehmlich darin zu sehen, daß die zweite Lage mit den weichmagnetischen Fasern sehr dünn sein kann, da sie von der ersten, dickeren Lage gestützt wird. Die zweite Lage mit den weichmagnetischen Fasern kann deshalb aus einer sehr verdünnten Papierfasersuspension hergestellt werden, was - wie nachfolgend noch näher beschrieben - enorme Vorteile hinsichtlich der nachfolgenden Ausrichtung und der verarbeitbaren Länge der weichmagnetischen Fasern in der noch feuchten Zellulosemasse der zweiten Lage mit sich bringt. Da beide Lagen darüber hinaus im noch feuchten Zustand aufeinander gebracht werden, haften sie nach dem Trocknen fest aneinander, ohne daß irgendwelche weiteren Schritte, z. B. eine Zusammenkleben beider Lagen, erforderlich wäre.The object is achieved by a method having the features specified in claim 1.
The advantage of the method according to the invention is primarily to be seen in the fact that the second layer with the soft magnetic fibers can be very thin, since it is supported by the first, thicker layer. The second layer with the soft magnetic fibers can therefore be produced from a very dilute paper fiber suspension, which - as described in more detail below - brings enormous advantages in terms of the subsequent alignment and the processable length of the soft magnetic fibers in the still wet cellulosic material of the second layer. In addition, since both layers are brought together when still wet, they adhere firmly after drying without any further steps, eg. B. gluing together of both layers would be required.

Gemäß dem erfindungsgemäßen Verfahren ist vorgesehen, daß die weichmagnetischen Elemente, bei denen es sich um Fasern mit sehr geringem Durchmesser handelt, im feuchten Zustand durch äußere Krafteinwirkung im wesentlichen in Längsrichtung der Materialbahn ausgerichtet werden. Die Ausrichtung erfolgt gemäß einer besonders günstigen Ausgestaltung des Verfahrens dadurch, daß oberhalb oder unterhalb der Lage aus Zellulosemasse, die die weichmagnetischen Fasern enthält, eine Vorrichtung vorgesehen ist, die ein Magnetfeld in Längsrichtung bzw. in Laufrichtung der Materialbahn erzeugt. Da sich die Zellulosemasse zu diesem Zeitpunkt noch in einem feuchten Zustand befindet, werden die Fasern unter dem Einfluß des Magnetfeldes in Laufrichtung der Materialbahn ausgerichtet. Alternativ kann eine Ausrichtung der Fasern in Längsrichtung der Materialbahn auch dadurch erzwungen werden, daß die Lage aus Zellulosemasse mit eingefügten weichmagnetischen Fasern beschleunigt wird; hierdurch werden die Fasern gleichfalls in Längsrichtung der Lage orientiert.According to the inventive method is provided that the soft magnetic elements, which are fibers with very small diameter, are aligned in the wet state by external force substantially in the longitudinal direction of the web. The alignment is carried out according to a particularly advantageous embodiment of the method, characterized in that above or below the layer of cellulosic material containing the soft magnetic fibers, a device is provided which generates a magnetic field in the longitudinal direction or in the running direction of the web. Since the cellulosic mass is still in a moist state at this time, the fibers are aligned under the influence of the magnetic field in the direction of travel of the web. Alternatively, alignment of the fibers in the longitudinal direction of the web can also be forced by accelerating the layer of cellulosic material with inserted soft magnetic fibers; As a result, the fibers are likewise oriented in the longitudinal direction of the layer.

Das nach dem Verfahren hergestellte Sicherungselement für die elektronische Artikelsicherung weist die im Patentanspruch 3 angegebenen Merkmale auf.The fuse element for electronic article surveillance produced by the method has the features specified in claim 3.

Wie bereits im Zusammenhang mit dem erfindungsgemäßen Verfahren beschrieben, handelt es sich bei den magnetischen Elementen um Fasern aus einem weichmagnetischen Material. Im Hinblick auf eine möglichst hohe Detektionsrate hat es sich als vorteilhaft herausgestellt, wenn die Länge der weichmagnetischen Fasern im Mittel größer ist als 2 cm.As already described in connection with the method according to the invention, the magnetic elements are fibers made of a soft magnetic material. With regard to the highest possible detection rate, it has proven to be advantageous if the length of the soft magnetic fibers is on average greater than 2 cm.

Eine bevorzugte Weiterbildung des erfindungsgemäßen Sicherungselements sieht vor, daß die Zellulosemasse der zweiten Lage maximal halb so viele weichmagnetische Fasern enthält wie Zellulosefasern. Insbesondere erlaubt es die erfindungsgemäße Schichtung von zwei Lagen aus Zellulosemasse übereinander, daß die Konzentration von Zellulosefasern, die in der Lage mit den weichmagnetischen Fasern enthalten ist, sehr niedrig ausfallen kann, ohne an Stabilität zu verlieren. Diese bevorzugte Ausgestaltung des erfindungsgemäßen Sicherungselements erlaubt, daß durch die extrem verdünnte Fasersuspension für die zweite Lage

  1. a) relativ lange magnetische Fasern der Zellulosemasse zugemischt werden können,
  2. b) die magnetischen Fasern gut dispersieren und nicht zu stark gekrümmt werden und
  3. c) die magnetischen Fasern gegebenenfalls unter Einwirkung äußerer Kräfte leicht ausgerichtet werden können.
A preferred development of the securing element according to the invention provides that the cellulose mass of the second layer contains at most half as many soft magnetic fibers as cellulose fibers. In particular, the stacking of two layers of cellulosic material one above another according to the invention allows the concentration of cellulose fibers contained in the soft magnetic fiber layer to be very low without losing stability. This preferred embodiment of the securing element according to the invention allows that by the extremely dilute fiber suspension for the second layer
  1. a) relatively long magnetic fibers can be admixed with the cellulosic material,
  2. b) the magnetic fibers disperse well and do not bend too much, and
  3. c) the magnetic fibers can optionally be easily aligned under the action of external forces.

Die Erfindung wird anhand der nachfolgenden Figuren näher erläutert. Es zeigt:

  • Fig. 1: eine schematische Darstellung einer Vorrichtung, mit der das erfindungsgemäße Verfahren durchgeführt wird, und
  • Fig. 2: eine perspektivische Darstellung eines nach dem erfindungsgemäßen Verfahren gefertigten Sicherungselements.
The invention will be apparent from the following Figures explained in more detail. It shows:
  • 1 shows a schematic representation of a device with which the method according to the invention is carried out, and
  • 2 shows a perspective view of a fuse element manufactured according to the method according to the invention.

Fig. 1 zeigt eine schematische Darstellung einer Vorrichtung, mit der das erfindungsgemäße Verfahren durchgeführt wird. Über eine Zuführvorrichtung 8 wird die Zellulosemasse 6 auf eine Auflagefläche 10 aufgebracht. Bei der Auflagefläche 10 handelt es sich z.B. um ein feinmaschiges endloses Netz, das über Umlenkrollen 14, 15 geführt ist. Durch die Maschen des Netzes 10 kann überschüssiges Wasser aus der Zellulosemasse 6 abgeführt werden.Fig. 1 shows a schematic representation of a device with which the inventive method is performed. Via a feed device 8, the cellulose composition 6 is applied to a support surface 10. The support surface 10 is e.g. around a fine-meshed endless net, which is guided over deflecting rollers 14, 15. Excess water can be removed from the cellulose composition 6 through the meshes of the net 10.

Mittels einer weiteren Zuführvorrichtung 7 wird eine zweite Zellulosemasse 5 auf eine zweite Auflagefläche 9 aufgebracht. Bei dieser Auflagefläche 9 kann es sich wiederum um ein feinmaschiges endloses Netz handeln, das über Umlenkwalzen 11, 12, 16 geführt wird. Unterhalb der Umlenkwalze 16 wird die Lage 3 aus Zellulosemasse 5 in noch feuchtem Zustand auf die erste Lage 2 aus Zellulosemasse 6 aufgebracht. Die Laufrichtung der Materialbahn, die aus den Lagen 2, 3 besteht, ist in der Zeichnung durch einen Pfeil angedeutet.By means of a further feed device 7, a second cellulose mass 5 is applied to a second bearing surface 9. This support surface 9 may again be a fine-meshed endless net, which is guided over deflecting rollers 11, 12, 16. Below the deflection roller 16, the layer 3 of cellulose mass 5 is applied in a still moist state to the first layer 2 of cellulose mass 6. The running direction of the material web, which consists of the layers 2, 3, is indicated in the drawing by an arrow.

Während die Zellulosemasse 6 der ersten Lage 2 lediglich aus Zellulosefasern besteht, sind der Zellulosemasse 5 der zweiten Lage 3 weichmagnetische Fasern 4 beigemischt. Das Mischungsverhältnis beträgt maximal 50:50. Oberhalb der zweiten Lage 3, die die weichmagnetischen Fasern 4 enthält, ist eine Vorrichtung angeordnet, die ein Magnetfeld in Laufrichtung der Materialbahn 2, 3 erzeugt. Wie bereits an vorhergehender Stelle beschrieben, weist die Zellulosemasse 5 der zweiten Lage lediglich eine verdünnte Konzentration an Zellulosefasern auf. Wird nun die noch feuchte Lage 3 unter der Vorrichtung hindurchgeführt, haben die weichmagnetischen Fasern 4 genügend Bewegungsfreiheit, sich in Richtung eines wirkenden Magnetfeldes zu orientieren. Durch diese erzwungene Ausrichtung der magnetischen Fasern 4 läßt sich bei vorgegebener Konzentration von weichmagnetischen Fasern die Detektionswahrscheinlichkeit für die Sicherungselemente 1, die aus der Materialbahn 2, 3 hergestellt werden, erheblich erhöhen.While the cellulosic material 6 of the first layer 2 consists only of cellulose fibers, the cellulose composition 5 of the second layer 3 is mixed with soft magnetic fibers 4. The mixing ratio is a maximum of 50:50. Above the second layer 3, which contains the soft magnetic fibers 4, a device is arranged which generates a magnetic field in the direction of travel of the material web 2, 3. As already described above, the cellulose layer 5 of the second layer has only a dilute concentration of cellulose fibers. If now the still moist layer 3 is passed under the device, the soft magnetic fibers 4 have sufficient freedom of movement to orient themselves in the direction of an acting magnetic field. As a result of this forced alignment of the magnetic fibers 4, the detection probability for the securing elements 1, which are produced from the material web 2, 3, can be increased considerably for a given concentration of soft magnetic fibers.

Wie bereits an vorhergehender Stelle erwähnt, kann eine Ausrichtung der weichmagnetischen Fasern 4 auch durch mechanische Einwirkung auf die noch feuchte Zellulosemasse 5, die die weichmagnetischen Fasern 4 enthält, erzwungen werden. Beispielsweise läßt sich eine Kraftkomponente in Laufrichtung der Materialbahn 3 einfach dadurch erreichen, daß die Materialbahn 3 in Laufrichtung beschleunigt wird.As already mentioned above, alignment of the soft magnetic fibers 4 can also be forced by mechanical action on the still wet cellulosic mass 5 containing the soft magnetic fibers 4. For example, a force component in the running direction of the material web 3 can be achieved simply by accelerating the material web 3 in the running direction.

In Fig. 2 ist eine perspektivische Darstellung eines nach dem erfindungsgemäßen Verfahren gefertigten Sicherungselements 1 zu sehen. Das Sicherungselement 1 besteht aus einer ersten Lage 2, bei der es sich um eine Zellulosemasse 6 handelt, die sich aus Zellulosefasern ohne weitere Beimischungen zusammensetzt. Die zweite Lage 3 besteht aus einem Gemisch einer Zellulosemasse 5, der weichmagnetische Fasern 4 beigefügt sind. Die Länge der weichmagnetischen Fasern 4 ist so bemessen, daß die Fasern 4 in einem elektronischen Artikelsicherungssystem mit hoher Wahrscheinlichkeit zur Aussendung eines charakteristischen Signals angeregt werden, so daß nachfolgend ein Alarm ausgelöst wird.In Fig. 2 is a perspective view of a manufactured according to the inventive fuse element 1 can be seen. The securing element 1 consists of a first layer 2, which is a cellulosic material 6, which is composed of cellulose fibers without further admixtures. The second layer 3 consists of a mixture of a cellulose mass 5, which are added soft magnetic fibers 4. The length of the soft magnetic fibers 4 is dimensioned so that the fibers 4 are excited in an electronic article surveillance system with high probability to emit a characteristic signal, so that subsequently an alarm is triggered.

Die weichmagnetischen Fasern 4 sind gemäß einer Weiterbildung der erfindungsgemäßen Sicherungselemente 1 im wesentlichen in eine Richtung orientiert. Dies bringt den Vorteil, daß selbst bei einer geringen Anzahl von Fasern 4 pro Sicherungselement 1 das charakteristische Signal des Sicherungselements problemlos von einem Artikelsicherungssystem detektiert werden kann.The soft magnetic fibers 4 are oriented according to a development of the fuse elements 1 according to the invention substantially in one direction. This has the advantage that even with a small number of fibers 4 per fuse element 1, the characteristic signal of the fuse element can be easily detected by an article surveillance system.

Zusammenfassend werden noch einmal die Vorteile der Sicherungselemente 1 erwähnt, die nach dem erfindungsgemäßen Verfahren hergestellt worden sind. Da zweilagiges Papier für die Herstellung der Sicherungselemente 1 verwendet wird, ist es möglich, die Konzentration an Zellulosefasern in der Lage 3, die die weichmagnetischen Fasern 4 enthält, sehr gering zu halten. Folglich kann auch die Konzentration der weichmagnetischen Fasern 4 gering ausfallen, wodurch die Herstellungskosten für ein erfindungsgemäßes Sicherungselement 1 entsprechend niedrig gehalten werden können. Ein weiterer Vorteil betrifft die Reißfestigkeit der zweilagigen Matrialbahn 2, 3. Die Lage 3 mit den im wesentlichen in Längsrichtung ausgerichteten weichmagnetischen Fasern 4 weist eine anisotrope Reißfestigkeit auf. Insbesondere ist die Reißfestigkeit in Richtung der Orientierung der Fasern 4 sehr gering. Da die Zellulosefasern in der ersten Lage 2 jedoch völlig willkürlich ausgerichtet sind, weist die Materialbahn 2, 3 als solche die bevorzugte isotrope Reißfestigkeit auf. Weiterhin können sehr lange Fasern verwendet werden, und die Fasern bleiben während des Herstellungsprozesses näherungsweise gestreckt.In summary, once again the advantages of the security elements 1 are mentioned, which have been prepared by the process according to the invention. Since two-ply paper is used for the production of the fuse elements 1, it is possible to keep the concentration of cellulose fibers in the ply 3 containing the soft magnetic fibers 4 very low. Consequently, the concentration of the soft magnetic fibers 4 can be low, whereby the manufacturing cost of a fuse element 1 according to the invention can be kept correspondingly low. Another advantage relates to the tear strength of the two-ply material web 2, 3. The layer 3 with the substantially longitudinally oriented soft magnetic fibers 4 has an anisotropic tear strength. In particular, the tear strength in the direction of orientation of the fibers 4 is very low. However, since the cellulosic fibers in the first layer 2 are aligned completely arbitrarily, the web 2, 3 as such has the preferred isotropic tear strength. Furthermore, very long fibers can be used and the fibers are approximately stretched during the manufacturing process.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
erfindungsgemäßes Sicherungselementinventive fuse element
22
erste Lagefirst location
33
zweite Lagesecond location
44
weichmagnetische Fasersoft magnetic fiber
55
Zellulosemasse für die zweite Lage mit weichmagnetischen ElementenCellulose composition for the second layer with soft magnetic elements
66
Zellulosemasse für die erste LageCellulose pulp for the first layer
77
Zuführvorrichtungfeeder
88th
Zuführvorrichtungfeeder
99
Auflagefläche für Zellulosemasse der zweiten LageSupport surface for cellulose composition of the second layer
1010
Auflagefläche für Zellulosemasse der ersten LageSupport surface for cellulose mass of the first layer
1111
Führungsrolleleadership
1212
Führungsrolleleadership
1313
GegendruckrolleCounter-pressure roller
1414
Führungsrolleleadership
1515
Führungsrolleleadership
1616
Führungsrolleleadership

Claims (6)

  1. A method of manufacturing security elements for electronic article surveillance wherein said security elements are made of at least two layers (2; 3), and soft magnetic elements (4) emitting a characteristic signal in the interrogating field of an article surveillance system are added to one of said two layers (2; 3),
    characterized in that a second layer (3) of a cellulose material (5) is applied in the still moist state to a first layer (2) of a cellulose material (6), wherein said soft magnetic elements (4) are fibers and, in the moist state, are oriented essentially in the longitudinal direction of the material web (2; 3; 2, 3) by external force applied, and
    that the desired shape of the security elements (1) is die-stamped or cut out from said two layers (2, 3) in the dry state.
  2. The method as claimed in claim 1,
    characterized in that in the moist state the soft magnetic fibers (4) are oriented essentially in the longitudinal direction of the material web (2; 3; 2, 3) by a magnetic field acting in the longitudinal direction of said material web (2; 3; 2, 3).
  3. A security element for electronic article surveillance, manufactured according to the method of claim 1,
    characterized in that the first layer (2) is a cellulose material (6) comprised of cellulose fibers, and
    that the second layer (3) is a cellulose material (5) comprised of cellulose fibers in which soft magnetic fibers (4) are contained which are excited in a magnetic interrogating field of an electronic article surveillance system to emit a characteristic signal, said soft magnetic fibers (4) having been oriented essentially in the longitudinal direction of the material web (2; 3; 2, 3) so that said soft magnetic fibers are oriented essentially in one direction.
  4. The security element as claimed in claim 3,
    characterized in that the length of the soft magnetic fibers (4) exceeds 2 cm on average.
  5. The security element as claimed in claim 3,
    characterized in that the cellulose material (5) of the second layer (3) contains no more than half as many soft magnetic fibers (4) as cellulose fibers.
  6. The security element as claimed in claim 3,
    characterized in that the cellulose material (5) for producing the second layer (3) has a lower concentration of cellulose fibers than the cellulose material (6) of the first layer (2).
EP99117104A 1998-09-19 1999-08-31 Method for producing security elements for the electronic protection of articles Expired - Lifetime EP0987662B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843062 1998-09-19
DE19843062A DE19843062A1 (en) 1998-09-19 1998-09-19 Process for the production of security elements for electronic article security

Publications (4)

Publication Number Publication Date
EP0987662A2 EP0987662A2 (en) 2000-03-22
EP0987662A3 EP0987662A3 (en) 2001-03-21
EP0987662B1 EP0987662B1 (en) 2003-10-15
EP0987662B2 true EP0987662B2 (en) 2007-05-09

Family

ID=7881591

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99117104A Expired - Lifetime EP0987662B2 (en) 1998-09-19 1999-08-31 Method for producing security elements for the electronic protection of articles

Country Status (9)

Country Link
US (1) US6585857B2 (en)
EP (1) EP0987662B2 (en)
AT (1) ATE252262T1 (en)
CA (1) CA2282808C (en)
DE (2) DE19843062A1 (en)
DK (1) DK0987662T3 (en)
ES (1) ES2209301T5 (en)
HU (1) HUP9903175A3 (en)
PL (1) PL188022B1 (en)

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Publication number Priority date Publication date Assignee Title
DE10022110B4 (en) * 2000-05-08 2007-10-25 Dieter Ronnenberg Influencing a web property profile by means of at least one sound field
CH696744A5 (en) * 2003-07-07 2007-11-15 Landqart Security paper and method for its production.
FR2861101B1 (en) * 2003-10-15 2007-06-15 Arjo Wiggins MULTIJET SAFETY PAPER
US8628839B2 (en) * 2005-12-26 2014-01-14 Fuji Xerox Co., Ltd. Recording medium
JP4847191B2 (en) * 2006-04-14 2011-12-28 富士ゼロックス株式会社 Recording sheet
JP5073324B2 (en) * 2007-03-12 2012-11-14 富士ゼロックス株式会社 Recording sheet
US8753482B2 (en) * 2008-04-30 2014-06-17 Honeywell International Inc. Method and apparatus for treatment of paper stock
US20110014537A1 (en) * 2009-07-16 2011-01-20 Ford Motor Company Fuel cell

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DE2919576A1 (en) † 1978-05-17 1979-11-29 Arjomari Prioux FIBER BAND CONTAINING METAL FIBERS, THE PROCESS FOR ITS MANUFACTURING AND USE, IN PARTICULAR IN THE PAPER INDUSTRY
DE2905441A1 (en) † 1979-02-13 1980-08-21 Gao Ges Automation Org SECURITY PAPER WITH PRINTED AUTHENTICATION MARKS IN A PAPER LAYER
EP0498186A1 (en) † 1991-01-17 1992-08-12 GAO Gesellschaft für Automation und Organisation mbH Security document and method for its production
DE4327225A1 (en) † 1993-08-13 1995-02-16 Basf Ag Magnetic ink concentrate
DE19581817T1 (en) † 1994-11-03 1997-10-16 Arjo Wiggins Sa Paper containing variable, controlled concentrations of security elements and process for its manufacture
DE19650611A1 (en) † 1996-12-06 1998-06-10 Meto International Gmbh Method and device for the production of security elements for electronic article security as well as a corresponding tape material

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IT1023835B (en) * 1973-05-11 1978-05-30 Dasy Int Sa DOCUMENT MATERIAL
AT392168B (en) * 1986-04-18 1991-02-11 Skidata Computergesellschaft M Process for producing an optically and magnetically codable recording medium
US5191315A (en) * 1990-12-31 1993-03-02 Pitney Bowes Inc. Deactivatable electronic article surveillance markers using short semi-hard magnetic wires
US5143583A (en) * 1991-04-02 1992-09-01 Marchessault Robert H Preparation and synthesis of magnetic fibers
US5601931A (en) * 1993-12-02 1997-02-11 Nhk Spring Company, Ltd. Object to be checked for authenticity and a method for manufacturing the same

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Publication number Priority date Publication date Assignee Title
DE2919576A1 (en) † 1978-05-17 1979-11-29 Arjomari Prioux FIBER BAND CONTAINING METAL FIBERS, THE PROCESS FOR ITS MANUFACTURING AND USE, IN PARTICULAR IN THE PAPER INDUSTRY
DE2905441A1 (en) † 1979-02-13 1980-08-21 Gao Ges Automation Org SECURITY PAPER WITH PRINTED AUTHENTICATION MARKS IN A PAPER LAYER
EP0498186A1 (en) † 1991-01-17 1992-08-12 GAO Gesellschaft für Automation und Organisation mbH Security document and method for its production
DE4327225A1 (en) † 1993-08-13 1995-02-16 Basf Ag Magnetic ink concentrate
DE19581817T1 (en) † 1994-11-03 1997-10-16 Arjo Wiggins Sa Paper containing variable, controlled concentrations of security elements and process for its manufacture
DE19650611A1 (en) † 1996-12-06 1998-06-10 Meto International Gmbh Method and device for the production of security elements for electronic article security as well as a corresponding tape material

Also Published As

Publication number Publication date
HU9903175D0 (en) 1999-11-29
HUP9903175A2 (en) 2000-06-28
EP0987662B1 (en) 2003-10-15
CA2282808C (en) 2004-08-17
CA2282808A1 (en) 2000-03-19
DE59907357D1 (en) 2003-11-20
US20020127940A1 (en) 2002-09-12
ES2209301T3 (en) 2004-06-16
US6585857B2 (en) 2003-07-01
HUP9903175A3 (en) 2001-03-28
EP0987662A2 (en) 2000-03-22
PL335474A1 (en) 2000-03-27
ES2209301T5 (en) 2007-11-16
EP0987662A3 (en) 2001-03-21
PL188022B1 (en) 2004-11-30
DE19843062A1 (en) 2000-03-23
ATE252262T1 (en) 2003-11-15
DK0987662T3 (en) 2004-01-19

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