WO2016091964A1 - Ensemble pour capteur humidite et procédé de fabrication de l'ensemble pour capteur d'humidité - Google Patents

Ensemble pour capteur humidite et procédé de fabrication de l'ensemble pour capteur d'humidité Download PDF

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Publication number
WO2016091964A1
WO2016091964A1 PCT/EP2015/079151 EP2015079151W WO2016091964A1 WO 2016091964 A1 WO2016091964 A1 WO 2016091964A1 EP 2015079151 W EP2015079151 W EP 2015079151W WO 2016091964 A1 WO2016091964 A1 WO 2016091964A1
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WO
WIPO (PCT)
Prior art keywords
layer
arrangement
state
volume
moisture
Prior art date
Application number
PCT/EP2015/079151
Other languages
German (de)
English (en)
Inventor
Julia KLOCK
Kai SCHNAPAUFF
Thomas Samuel
Jan ROGGE
Jurij Weiss
Pierre GÖPPERT
Original Assignee
Schreiner Group Gmbh & Co. Kg
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 Schreiner Group Gmbh & Co. Kg filed Critical Schreiner Group Gmbh & Co. Kg
Publication of WO2016091964A1 publication Critical patent/WO2016091964A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
    • G01N27/121—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid for determining moisture content, e.g. humidity, of the fluid
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/20—Status alarms responsive to moisture

Definitions

  • the present invention relates to an arrangement for a humidity sensor and to a method for producing the arrangement for a humidity sensor.
  • the arrangement and method may be adapted to provide tamper protection for a security tag.
  • Security labels can be used for authorization or proof of origin and can be used wherever it is necessary to verify items and / or identify persons. This applies, for example, vehicles that want to enter restricted areas, or, for example, containers whose contents are to be protected.
  • security labels have, for example, electronic components, such as RFID transponders, whose operation is to be protected against manipulation.
  • a security label a substrate layer having a surface and a first layer disposed on the surface of the substrate layer and having a surface facing away from the surface
  • Substrate layer is facing away.
  • the assembly further comprises a second layer disposed on the surface of the first layer and having electrical conductivity.
  • the first layer is formed such that it has a first volume in a first state and in a second state, when in contact with moisture, has a second volume that is greater than the first volume.
  • the first layer and the second layer are arranged one on the other so that the second layer is continuous in the first state and interrupted in the second state. In this way, an arrangement for a label with humidity sensor is realized in order to detect moisture effects can. In one application of the label can thus easily detected a detachment of the label by means of moisture and thereby a tamper protection against improper use of the label are made possible.
  • the second layer has an electrical conductivity as a function of its material and is coupled, for example, to one or more electrical components, so that a detectability of a detachment test by means of moisture is possible in a simple manner by means of the arrangement described.
  • the substrate layer serves, for example, as a carrier material and may be a PET film.
  • the second layer breaks, so that the second layer is no longer continuous.
  • Such a manipulation attempt thus leads to irreversible destruction of the second layer at one or more locations, whereby an electrical conduction by means of the second layer in the second state is no longer possible.
  • breaking up of the second layer in the second state leads to a
  • breaking up the second layer also leads to a complete loss of function of the electrical component, so that misuse of the arrangement or an associated security label comprising the arrangement is prevented or at least made more difficult.
  • the arrangement or more precisely the second layer of the arrangement, is electrically connected to an RFID transponder, which in each case receives and / or transmits a signal during operation.
  • the second electrically conductive layer is continuous and functional, and thus the desired functionality of the RFID transponder with regard to the reception and transmission of signals is also given.
  • the assembly or the first layer of the assembly, contacts moisture, the first layer will swell and, compared to the first volume in the first state, will have the increased second volume in the second state.
  • the volume of the first layer has increased in such a way that the second layer arranged above it is interrupted and no longer functional.
  • the second layer is irreversibly destroyed, so that drying out the first layer, for example, when the absorbed moisture leaves the first layer, does not lead to the arrangement in the first state again.
  • swellable materials can be used for the first layer, which change their volume upon contact with moisture.
  • Contact with moisture also includes, but is not limited to, contact with aqueous or organic media, such as acids, bases, and salt solutions, or alkanes, alcohols, aldehydes, carboxylic acids, esters, and halogenated hydrocarbons.
  • the second volume of the first layer in the second state is at least 10% larger than the first volume of the first layer in the first state.
  • the second volume of the first layer in the second state is greater than 50% greater than the first volume of the first layer in the first state.
  • the second volume of the first layer in the swollen second state may also be greater than 100% to 400% greater than the respective portion of the first volume of the first layer in the unswollen first state.
  • an operation of the RFID transponder is no longer available or at least no longer corresponds to a previous operating state.
  • Receiving and transmitting signals by means of the RFID transponder is changed due to exposure to moisture.
  • a cost-effective manipulation protection for security labels can be realized, which makes, among other things, a manipulation of electronic components easily recognizable.
  • the first layer and the second layer may be printed on the substrate layer.
  • the first layer and the second layer by means of a
  • the first layer may comprise a gelling agent and / or a varnish which and / or which swells in contact with moisture in the second state.
  • Gelling agents are substances which, inter alia, have the property of swelling in contact with water or binding water, leading to gelation.
  • Gelling agents are, for example, admixed with a lacquer or a printing ink and thus enable the first layer to be imprinted, which contains the described property, to swell in contact with moisture.
  • a quantity and quality of the swelling of the first layer depends on, for example, a selection and a proportion of the gelling agent in a lacquer system.
  • An example of a lacquer in this context is the absorption lacquer 972 UV 0270 from RUCO.
  • Further examples are UVS 904 from Marabu and Cx / E50 from Coates Screen Inks.
  • the first layer may comprise a superabsorbent that swells in contact with moisture in the second state.
  • Superabsorbents are special gelling agents and include superabsorbent
  • Polymer substances which are, for example, pulverulent and, inter alia, have the property due to their polymeric network structure, relatively much
  • the starting material of a superabsorber is usually admixed with a lacquer or an ink in order to produce a printable paste.
  • a superabsorbent layer Due to the absorption of moisture, when a superabsorbent layer comes into contact with moisture, its volume increases, for example, by one Multiple and it forms a hydrogel, which usually has a rugged structure.
  • Polymer substance is the gelling agent ZI 069 Evonik Industries AG.
  • the second layer comprises a silver conductive paste, which has electrical conductivity.
  • the silver conductive paste is a possible component of the second layer and usually comprises resins, solvents and electrically conductive particles. In this way, for example, depending on a predetermined concentration of Silberleitpaste a predetermined electrical conductivity is realized and allows printing of the second layer.
  • the second layer may also include other electrically conductive particles, such as copper or graphite, such that the second layer comprises a copper conductive paste or a graphite conductive paste.
  • the electrically conductive particles are usually plate-shaped, because such a configuration, for example, realized a higher electrical conductivity and lower resistances than, for example, spherical particles.
  • the second layer is for example strip-shaped.
  • strip-shaped a geometric shape of the second layer is described in which a spatial dimension is designed significantly larger than the other two. This means, for example, with respect to a view of the second layer, that a length of the second layer is greater than a width of the second layer. By way of example, a value of the length is at least ten times as great as a value of the width, which in the plan view realizes a strip-shaped configuration of the second layer.
  • a strip-shaped second layer serves, for example, as a conductor track, for example, an antenna or a circuit board, and allows a space-saving implementation in an associated electrical component.
  • the second layer is printed in strips on the first layer, the first layer in turn being designed flat.
  • the second layer is meandered and covers a larger portion of the first layer than would be the case if the second layer ran as a single stripe from one edge to the other edge of the first layer.
  • a strip-shaped configuration of the second layer may be advantageous for a respective coupled electrical component and a type of application, for example, signal transmissions in
  • High frequency range include.
  • the first layer and the second layer may be formed flat.
  • a length and a width of the respective layer may be approximately equal.
  • a length to width ratio of the respective layer is 2: 1 or even 1: 3.
  • the second layer of the described arrangement is printed flat, it is useful in this connection to form the first layer evenly, otherwise the second layer completely completes the first layer, for example overlaps. In such a case, the second layer may then only be broken up locally by swelling of the first layer arranged underneath, so that in the second state, a continuously electrically conductive part of the second layer may then optionally be present apart from the first layer.
  • a surface configuration of the first and second layer may be useful for a respective coupled electrical component and a type of application, for example, include signal transmission in the high frequency range.
  • the second layer is a section of a conductor track of an electrical component.
  • An example of an electrical component is an RFID transponder with a loop or dipole antenna, which can be protected against misuse with the described arrangement.
  • the second layer may be a portion of a trace of an antenna of a transponder. This embodiment of the arrangement is particularly advantageous for antennas or
  • Antenna structures in which one or more tracks are electrically coupled to one or more second layers of the device are electrically coupled to one or more second layers of the device.
  • the antenna is a loop antenna or a dipole antenna.
  • the second layer may also be a portion of a trace of an RFID transponder.
  • a void structure is disposed between the surface of the substrate layer and the first layer.
  • a void structure offers an extra in this context
  • Manipulation protection which is realized by means of two or more different strongly adhesive structures.
  • a more adhesive structure in the form of a lettering is implemented in the void structure, while other sections of the void structure are weaker adhesive. If the void structure or security tag comprising the void structure is applied to an article to be secured, if the security tag is released, the more adhesive lettering will stick to the article, while the weaker adhesive portions with the security tag will be removed from the article become.
  • the at least two structures described can also be configured conversely in terms of their adhesive strength, so that, for example, the structure in the form of a lettering is weaker adhesive.
  • the arrangement may also have a stamped structure between the surface of the
  • Substrate layer and the first layer include.
  • one of the previously described layers and / or the void structure may have a stamped structure.
  • a stamped structure offers in connection with the arrangement described an increased protection against tampering, for example, compared to security labels that offer no additional protection against tampering using moisture.
  • the substrate layer on punches which are formed for example T or Y-shaped.
  • the first and / or the second layer has a stamped structure.
  • a method of producing a security tag comprises providing a substrate layer, providing a first substance having a first volume in a first state and a second volume in a second state when in contact with moisture greater than the first volume and providing a second substance having electrical conductivity.
  • the method further comprises printing the first substance onto a surface of the substrate layer and thereby forming a first layer having a surface facing away from the substrate layer.
  • the method further comprises, subsequent to the printing of the first substance, applying the second substance to the surface of the first layer and thereby forming a second layer.
  • the application of the second substance and the formation of the second layer on the surface of the first layer can be effected in particular by means of printing.
  • the second layer can also be applied to the first layer by lamination, gas-phase coating or else galvanically.
  • Security label including tamper protection against improper detachment with its essential components to produce by printing technology.
  • the second substance is printed on the first layer with a small thickness.
  • it may be as thin as possible, so that a desired electrical conduction of the second layer can still be realized depending on a composition of the second substance.
  • the application thickness relates to a thickness of the second layer substantially perpendicular to the surface of the substrate layer.
  • a geometry of the second layer parallel to the surface of the substrate layer may affect a break-up of the second layer in the transition from the first state to the second state.
  • the first substance includes, for example, a paint such as the
  • Absorbent varnish 972 UV 0270 from RUCO, and a gelling agent such as The superabsorbent polymer substance ZI 069, for example, is useful when the first substance contains about 90% of the absorption varnish 972 UV 0270 and 10% the gelling agent ZI 069 to realize a printable paste having the property in contact with Swelling moisture.
  • the second layer is printed in strips on the first layer, widths between 0.25 mm and 0.5 mm are advantageous.
  • the width in this context refers to the spatial dimension of the second layer, which has a significantly smaller value than the length.
  • the method may comprise printing the first substance and / or the second substance by means of a screen printing process.
  • a screen-printing method in this context forms a printing method in which the first and / or second substance is printed on the surface of the substrate layer, for example by means of a mesh-like screen.
  • a 32/70 or a 77/55 mesh to realize, for example, a desired electrical conductivity and geometry of the first and / or second layers.
  • the method may additionally comprise contacting the second layer with at least one conductor track of an electrical component.
  • a printed security label is realized which comprises, for example, an electrical component and in which a part of a conductor track of the electrical component is protected against abusive detachment and non-usual use.
  • FIG. 1 shows an embodiment of an arrangement for a security label
  • Figure 2 shows another embodiment of an arrangement for a
  • Figure 3 shows another embodiment of an arrangement for a
  • FIG. 4 is a flowchart for producing a security tag.
  • FIG. 5 shows an exemplary embodiment of an arrangement for an RFID transponder
  • FIG. 6 a shows an exemplary embodiment of an arrangement in a first state
  • FIG. 6b shows an exemplary embodiment of the arrangement in a second state
  • Figure 7 shows another embodiment of an arrangement for a
  • Figure 1 shows schematically an embodiment of an arrangement 1 for a
  • Security label in a side view which comprises a substrate layer 3, a first layer 10 and a second layer 20.
  • the illustrated side view refers in this embodiment to a plane which is spanned by a z-axis and an x-axis. Accordingly, the z-direction and x-direction are shown in FIG.
  • the substrate layer 3 has a surface 5 and the first layer 10 has a surface 11 which faces away from the substrate layer 3 and which faces the second layer 20.
  • the first layer 10 and the second layer 20 are substantially geometrically identical with respect to the side view, while the substrate layer 3 is geometrically longer in the x-direction.
  • the surfaces 5 of the substrate layer 3 and the surface 11 of the first layer 10 are formed substantially parallel to each other and extend with respect to the drawn coordinate system in the xy plane.
  • the first layer 10 has a swellable property so that it is in contact with
  • the first layer 10 has a first volume in a first state and, in a second state, when in or in contact with moisture, a second volume which is larger than the first volume.
  • the first volume thus corresponds to an initial volume while the second volume represents a volume at which the first layer 10 has increased, for example due to the absorption of water or water vapor.
  • the property of absorbing and / or swelling moisture results, inter alia, from a material or a material combination of the first layer 10.
  • Increasing the volume of the first layer 10 in the transition from the first state to the second state essentially relates to a volume change in the positive z-direction with respect to the illustrated embodiment.
  • a change in volume in the other two spatial dimensions, the x- and y-direction is possible, these volume changes do not contribute primarily to a rupture of the second layer 20.
  • Such breakup is primarily due to the change in volume in the positive z-direction.
  • a change in volume of the first layer 10 in the opposite direction is substantially prevented by the adjacent substrate layer 3, which for example represents a greater resistance to the swelling first layer 10 than the printed second layer 20.
  • the second layer 20 has electrical conductivity and is accordingly capable of conducting electrical signals.
  • the electrically conductive property of the second layer 20 results inter alia from a material or a combination of materials of the first layer 20.
  • the second layer 20 comprises a silver conductive paste, so that, for example, depending on a given concentration of conductive particles of silver conductive paste a given electrical conductivity of the second Layer 20 can be realized.
  • the first layer 10 and the second layer 20 are stacked such that the second layer 20 is discontinuous in the first state and interrupted in the second state. For example, due to contact with moisture, the first layer 10 swells asymmetrically and causes irreversible destruction of the second layer 20 at one or more locations.
  • Arrangement 1 comprises.
  • the second layer 20 has inter alia, depending on their material on an electrical conductivity and is coupled, for example by means of electrical lines 7 with one or more electrical components whose predetermined operation protected by the described arrangement 1 in a simple manner against improper use using moisture can be.
  • breaking up of the second layer 20 in the second state leads to a
  • the second layer 20 represents in
  • a signal path for example, as shown in Figure 1 as a section of one or more electrical lines 7 a signal passes.
  • An interruption of the second layer 20 in the second state corresponds to an interruption of the signal path.
  • the arrangement 1 with respect to the positive z-direction is formed as follows: On the substrate layer 3, the first layer 10 is arranged. On the first layer 10, the second layer 20 is arranged. In the opposite direction or from another point of view, the arrangement 1 is formed as follows: on the second layer 20, the first layer 10 is arranged and on the first layer 10, the substrate layer 3 is arranged. Irrespective of an orientation, the first layer 10 is thus arranged between the substrate layer 3 and the second layer 20 in relation to the z-direction.
  • the first layer 10 and the second layer 20 are printed, for example, on the substrate layer 3, and thus enable a simple and cost-effective implementation of the arrangement 1. For example, a first substance was printed on a part of the surface 5 of the substrate layer 3 by means of a screen printing process and thereby the first layer 10 is formed.
  • the substrate layer 3 serves in this context as
  • Carrier material and is for example a PET film.
  • the first layer 10 comprises a gelling agent and / or varnish that realizes the described swelling function.
  • Gelling agents are substances that swell in contact with water or bind water. Such gelling agents are admixed, for example, with a varnish or a printing ink and thus make it possible to imprint the first layer 10, which contains the described property, in contact with moisture.
  • a special type of gelling agent is superabsorbent or superabsorbent
  • Polymer substances which are, for example, pulverulent and which, in comparison to other gelling agents, have the properties of absorbing a relatively large amount of moisture and storing it over a relatively long period of time.
  • a superabsorbent may also be mixed as a starting material with a lacquer or a printing ink in order to produce a printable paste, which then represents the first substance by means of which the first layer 10 is formed.
  • An example of a superabsorbent or a superabsorbent polymer substance is the gelling agent ZI 069 from Evonik
  • a second substance is then printed on the surface 11 of the first layer 10 and thereby the second layer 20 is formed.
  • the second substance and thus the second layer 20 comprise, for example, a silver-conducting paste which enables the electrical conductivity of the second layer 20.
  • the silver conductive paste or second substance comprises for example, resins, solvents and electrically conductive particles.
  • An example of a silver conductive paste is described by the abbreviation AG 1007.
  • the second layer 20 may alternatively or additionally include other electrically conductive particles, such as copper or graphite, such that the second layer 20 comprises a copper conductive paste or a graphite conductive paste.
  • the electrically conductive particles are usually plate-shaped, for example, in comparison to spherical particles to realize a higher electrical conductivity and lower resistances.
  • the second layer 20 is then coupled to one or more electrical components, wherein the electrical coupling with one or more electrical components in this embodiment is indicated by means of two electrical leads 7.
  • the arrangement 1 allows a simple and inexpensive to produce manipulation protection, especially for security labels comprising electrical components. An unauthorized intervention by means of moisture is thus made more difficult and consequently a contribution is made to counteract a manipulation. This leads to an increased security of manipulation protection compared for example
  • Figure 2 shows a further embodiment of the arrangement 1 in a plan view, which represents a plane with respect to the drawn coordinate system, which is spanned by the x-axis and the y-axis. Accordingly, the x-direction and y-direction are shown in FIG.
  • the second layer 20 is strip-shaped in comparison to the first layer 10 and, moreover, the first layer 10 projects beyond the length in the x-direction.
  • the second layer 20 is thus arranged on the surface 11 of the first layer 10 and on the surface 5 of the substrate layer 3 and, for example, by means of a printing process on the first layer 10 and the
  • Substrate layer 3 has been printed.
  • the substrate layer 3 and the first layer 10 are formed substantially flat in this embodiment.
  • a geometric shape of the second layer 20 has a significantly greater length, for example as shown in the x-direction, than an associated width and thickness in the y and z directions.
  • a length of the second layer 20 in the x-direction is significantly greater than a width of the second layer 20 in the y-direction.
  • a value of the length is at least twenty times as large as a value of the width, which in the plan view realizes a strip-shaped configuration of the second layer.
  • a strip-shaped second layer 20 serves, for example, as a conductor track
  • an antenna 24 or a circuit board allows a space-saving implementation in an associated electrical component.
  • flat describes a geometry of the first layer 10 and substrate layer 3 in which two out of three spatial dimensions have, for example, values of the same order of magnitude. For example, based on the plan view, a value of the length of the first layer 10 and / or the substrate layer 3 in the x-direction is twice as large as a value of the width in the y-direction.
  • the substrate layer 3 is in this case
  • Embodiment of the arrangement 1 formed larger than the first layer 10 which in turn is formed larger than the second layer 20.
  • the second layer 20 is formed larger than the substrate layer 3, which in turn is formed larger than the first Layer 10. Due to the illustrated 2, the second layer 20 appears substantially the same length as the substrate layer 3. But in that the first layer 10 has a thickness and the second layer 20, which is arranged on the first layer 10, on both sides over the first Layer 10 protrudes in the x-direction, the second layer 20 is therefore also formed longer than the substrate layer 3.
  • the second layer 20 may also be formed over the geometry of the substrate layer 3 and this over, for example in the x direction the edges of the substrate layer 3 protrude.
  • An exemplary schematic side view of the embodiment of the arrangement 1 of Figure 3 is shown in Figure 6a.
  • Figure 3 shows another embodiment of an arrangement 1 for a
  • the assembly 1 comprises, in addition to the substrate layer 3, the first layer 10, and the second layer 20, a void structure 30, an adhesive layer 50, and a protective layer 60.
  • the assembly 1 is disposed on a substrate 70 and, for example, by means of the adhesive layer 50 this glued on.
  • the ground 70 is a windshield of a motor vehicle such that the illustrated assembly 1 and the illustrated embodiment implement, for example, a security tag such as a vignette or access authorization sticker that verifies that the motor vehicle is identified and marked as authorized.
  • the adhesive layer 50 provides an adhesive bond to the substrate 70, which may alternatively be a document or other object to be secured and verifiable.
  • the void structure 30, which implements a further manipulation protection of the security label is arranged below the adhesive layer 50 in relation to the positive z-direction.
  • the void structure 30 comprises, for example, two different degrees of adhesion
  • one structure is formed as a weaker adhesive structure in the form of a lettering and the other structure as a more adhesive residue of the void structure 30. If the void structure 30 or a security label comprising the void structure 30 is applied to an object to be secured, the more adhesive residue of the void structure 30 remains on the security label upon release of the security label Glue the object while the weaker adhesive lettering with the safety label is removed from the object. What remains is a part of the arrangement 1, to which a removal of the corresponding part of the arrangement 1 can be seen. Thus, such a void structure 30 provides additional mechanical
  • Tamper protection and in connection with the described manipulation protection against improper detachment by means of moisture by means of the first layer 10 and the second layer 20 increased security against unauthorized misuse of
  • Substrate layer 3 the first layer 10 and the second layer 20, which substantially corresponds to the embodiment of the arrangement 1 of Figure 1.
  • the second layer 20 is electrically coupled to an antenna 24 having, for example, an electrical connection to one
  • Loop antenna 80 or a dipole antenna represents.
  • the protective layer 60 is arranged on the second layer 20, which protects the arrangement 1 and in particular the second layer 20, for example, against environmental influences or manipulation from the outside.
  • the arrangement 1 is formed with respect to the positive z-direction as follows: on the substrate 70, the adhesive layer 50 is arranged. On the adhesive layer 50, the void structure 30 is arranged. On the void structure 30, the substrate layer 3 and on the substrate layer 3, the first layer 10 is arranged. On the first layer 10, the second layer 20 is arranged and on the second layer 20, the protective layer 60 is arranged. From another aspect, the assembly 1 is formed as follows: on the protective layer 60, the second layer 20 and on the second layer 20, the first layer 10 is arranged. On the first layer 10, the substrate layer 3 is arranged. On the substrate layer 3, the void structure 30 and on the void structure 30, the adhesive layer 50 is arranged. On the adhesive layer 50, the substrate 70 is arranged.
  • the described layers are shown with different thicknesses, which is shown only by way of example in this embodiment.
  • An associated thickness in the respective layer can also be designed differently.
  • the respective layers except the substrate 70 are in FIG.
  • the arrangement 1 may also comprise further layers, such as a stamped structure. Or existing layers, such as the substrate layer 3, have a given stamped structure.
  • a stamped structure provides in connection with the described arrangement 1 further manipulation protection by predefined shapes or geometries are punched out of the associated layer and thus realize sections that tear easier for example in a release of the assembly 1 from the ground 70 than others.
  • FIG. 4 describes an exemplary embodiment of a flowchart for producing the arrangement 1 or a security label, which comprises an embodiment of the arrangement 1. For example, in a manufacturing process, the following steps are performed:
  • a first step S 1 among other things, the substrate layer 3, the first substance and the second substance are provided.
  • a step S3 the first substance is printed on the surface 5 of the substrate layer 3 and thereby the first layer 10 is formed with the surface 11 facing away from the substrate layer 3.
  • the second substance is printed on the surface 11 of the first layer 10, thereby forming the second layer 20, which has electrical conductivity.
  • manipulation protection is enabled, for example against abusive detachment of an associated label by means of moisture and a non-common use of such. In this way, an embodiment of the arrangement 1 is realized.
  • the second layer 20 is coupled to one or more electrical components or provided with one or more electrical leads 7, to allow later electrical coupling to electrical components.
  • a void structure 30 and / or a stamped structure with a predetermined shape is applied to the second layer 20 or to the
  • Substrate layer 3 applied, for example, printed or glued.
  • a step S i l for example, an adhesive layer 50 is applied to an underside of the substrate layer 3, which faces away from the surface 5 of the substrate layer 3.
  • the assembly 1 thus produced is then applied to a PET film, for example, or the adhesive layer 50 is covered with silicone paper.
  • a security label is realized which, inter alia, offers increased protection against abusive detachment, in particular by exposure to moisture.
  • an order of the described method steps may vary.
  • arranging the void structure 30 in time before the printing of the first substance on the surface 5 of the substrate layer 3 take place.
  • arranging or imprinting of the second substance always takes place in time after arranging or printing the first substance.
  • the first substance includes, for example, a paint such as the
  • widths between 0.25 mm and 0.5 mm are advantageous.
  • Other widths are also possible, provided that the described properties and function of the arrangement 1 are realized.
  • the width in this designates
  • the width of the second layer 20 is formed in the y-direction and the length in the x-direction.
  • the printing of the first substance and / or the second substance can take place, for example, by means of a screen-printing process.
  • a screen-printing method in this context forms a printing method in which the first and / or second substance is printed on the surface 5 of the substrate layer 3, for example by means of a mesh-like screen.
  • the screen printing method it is useful to use a 32/70 or a 77/55 mesh sieve in order to realize a desired electrical conductivity on the one hand and a predetermined geometry of the first and / or second layer 10, 20 on the other hand.
  • a printable security label which comprises, for example, an electrical component in which the second layer 20 is a section of a conductor track of the electrical component.
  • FIG. 5 describes an exemplary embodiment of an RFID transponder 90 comprising the arrangement 1. Shown in a plan view is the substrate layer 3, on the surface 5 of which a loop antenna 80 is depicted, which is electrically connected to a chip 26 and the second layer 20 of the arrangement 1.
  • the second layer 20 is in this embodiment, a part or a portion of a conductor of the
  • Loop antenna 80 and realized in cooperation with the first layer 10, which is disposed below the second layer 20, a protection against misuse of the RFID transponder 90, for example due to exposure to moisture.
  • the second layer 20 may also be provided with several
  • a plurality of second layers 20 are disposed on the first layer 10, each realizing a portion of a trace of the loop antenna 80 that extend above the first layer 10.
  • the first layer 10 would be larger, so that the three printed conductors run in the y-direction on the first layer 10 along the reference line AA 'in the x-y plane relative to the illustrated plan view.
  • three second layers 20 are printed, each of which is electrically coupled to a conductor track.
  • the second layer 20 of the arrangement 1 is thus electrically connected in this exemplary embodiment to a conductor track of the loop antenna 80 of the RFID transponder 90, whose mode of operation includes, inter alia, receiving and emitting a respective signal.
  • the electrically conductive second layer 20 is continuous and functional, and thus the functioning of the RFID transponder 90 with regard to the reception and transmission of signals is also given.
  • the first layer 10 is swelled such that the second layer 20 is interrupted, thereby no longer receiving or transmitting signals, or at least changed in such a way as to be easily detected compared to the first state can.
  • the arrangement 1 in the first state and the second state is shown in a side view in the xz plane and represents, for example, the arrangement 1 of the embodiment from FIG. 5 with the RFID transponder 90 Arrangement 1 of FIG. 5, in the exemplary embodiments of FIGS. 6 a and 6 b, has the second layer 20 geometrically longer in the x direction than the first layer 10. Based on the illustrated side view in the xz plane, the second layer 20 surrounds the first layer 10 and includes them together with the substrate layer 3.
  • the illustrated electrical lines 7 represent, for example, sections of the coupled track of the loop antenna 80, which extends further on the substrate layer 3 as shown in FIG.
  • the first layer 10 has the first volume, so that the overlying printed second layer 20 is continuous. Consequently, the second layer 20 is electrically conductive throughout, and as a result, the RFID transponder 90 is also functional, at least with regard to the arrangement 1.
  • the first layer 10 of the assembly 1 contacts moisture, the first layer 10 swells and has an increased second volume in the second state (FIG. 6b) compared to the first volume in the first state (FIG. 6a). on.
  • the volume of the first layer 10 has increased in such a way that the second layer 20 arranged above it is interrupted and thus no longer continuously electrically conductive.
  • the second layer 20 is interrupted irreversibly, so that swelling of the first layer 10, for example when the absorbed moisture leaves the first layer 10, does not lead again to the arrangement 1 in the first state.
  • a manipulation attempt by the RFID transponder 90 and the assembly 1 by means of moisture leads to a disruption of the second layer 20 at one or more locations, whereby an electrical conduction by means of the second layer 20 between a point A and a point B in the second state no longer is possible.
  • the arrangement 1 is electrically coupled to the RFID transponder 90 as described, its mode of operation is no longer present or at least no longer corresponds to a previous starting state, as illustrated, for example, in FIG. 6a.
  • Receiving and transmitting signals by means of the RFID transponder is thus changed due to exposure to moisture.
  • Security labels realized that makes, among other things, a manipulation of electronic components easily recognizable.
  • FIG. 7 shows a further exemplary embodiment of the arrangement 1, in which the second layer 20 is arranged in a wave-like or meandering manner on the first layer 10.
  • Individual sections of the second layer 20 may for example be referred to as strip-shaped, so that the entire second layer 20 covers a larger part of the surface 11 of the first layer 10 due to the meandering formation. In this way, it is possible, for example, to increase an activation speed of the arrangement 1, in that the second layer 20 covers a larger part of the swellable first layer 10 with regard to its length.

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Abstract

L'invention concerne un ensemble (1), destiné à un capteur d'humidité, qui comprend une couche de substrat (3) pourvue d'une surface (5) et une première couche (10) disposée sur la surface (5) de la couche de substrat (3) et pourvue d'une surface (11) qui est tournée à l'opposé de la couche de substrat (3). L'ensemble (1) comprend en outre une seconde couche (20) disposée sur la surface (11) de la première couche (10) et présentant une conductivité électrique. La première couche (10) est formée de façon à avoir dans un premier état un premier volume et, dans un second état, si elle est en contact avec de l'humidité, un second volume supérieur au premier volume. La première couche (10) et la seconde couche (20) sont disposées l'une sur l'autre de telle sorte que la seconde couche (20) est continue dans le premier état et discontinue dans le second état.
PCT/EP2015/079151 2014-12-10 2015-12-09 Ensemble pour capteur humidite et procédé de fabrication de l'ensemble pour capteur d'humidité WO2016091964A1 (fr)

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DE102014118353.3 2014-12-10
DE102014118353.3A DE102014118353A1 (de) 2014-12-10 2014-12-10 Anordnung für einen Feuchtesensor und Verfahren zum Herstellen der Anordnung für einen Feuchtesensor

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DE102017204669A1 (de) 2017-03-21 2018-09-27 Robert Bosch Gmbh Sensoreinrichtung
US11202366B2 (en) 2015-08-21 2021-12-14 Schreiner Group Gmbh & Co. Kg Object having an electronic unit and conductor structures on a carrier structure

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DE102017108415A1 (de) * 2017-04-20 2018-10-25 Schreiner Group Gmbh & Co. Kg Luftfeuchteindikator
DE102017125259A1 (de) * 2017-10-27 2019-05-02 Schreiner Group Gmbh & Co. Kg Sicherheitsetikett zum Nachweis missbräuchlicher Manipulationsversuche

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WO2006127355A2 (fr) * 2005-05-20 2006-11-30 Dow Global Technologies Inc. Controle de l'observance d'un medicament oral a l'aide d'etiquettes d'identification par radiofrequence
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