JP2007094621A - Non contact ic tag label - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a non contact IC tag label that can carry out non contact good communication without communication block even by attaching on a metal body, and can be used on a nonmetal surface. <P>SOLUTION: In the non contact IC tag label 1, an IC chip 3 with a storing function for reading information in a non contact manner, to which an antenna coil 2 is electrically connected is formed on an inlet base 11, a surface substrate 4 made of paper or plastic is laminated on the surface of the antenna coil on the inlet base 11, and a magnetic material coating sheet 10 is laminated on the opposite side of the antenna coil 2 on the inlet base in such a manner that a coating surface 10b or sheet surface 10b becomes the inlet base side. Further, in the non contact IC tag label formed by laminating adhesive layer for attaching to adherend on releasing paper, the initial permeability of the magnetic material coating sheet 10 is 20 or more at the frequency of 13.56 MHz, and the thickness ranges from 50 μm to 300 μm. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to a non-contact IC label. Specifically, the present invention relates to a non-contact IC tag label having a structure that suppresses communication inhibition due to metal of the IC tag. The non-contact IC tag label of the present invention is used as a normal non-contact IC tag label, and can be suitably used by suppressing communication hindrance particularly when it is attached to an object made of a metal material or a metal container. .
The technical field of the present invention relates to the manufacture and use of non-contact IC tag labels, and the main fields of use are fields such as transportation, distribution, inventory management, and factory process management.

Non-contact IC tags can store and hold information and communicate with external devices in a non-contact manner to exchange information, so they are widely used as recognition media in transportation and logistics, or for various purposes such as product quality control and inventory management. It has come to be.
However, when a non-contact IC tag is attached to a conductive member such as an object made of a metal material or a metal container, the AC magnetic field generated by the electromagnetic wave for non-contact IC tag transmission / reception is placed in the metal behind the object. Eddy current is generated. This eddy current generates a magnetic flux in a direction that cancels the magnetic flux for transmission / reception, and this often attenuates the magnetic flux for transmission / reception and makes communication difficult.
Therefore, when attaching a non-contact IC tag to a member made of a conductive material such as metal, a magnetically permeable magnetic body is disposed between the non-contact IC tag and the conductive member, and a transmission / reception magnetic flux is passed therethrough. A method is known in which magnetic flux enters a metal and suppresses the generation of eddy currents. The non-contact IC tag label of the present invention also uses this principle.

  As a prior art of a non-contact IC tag label for the purpose of suppressing communication inhibition by metal, there are Patent Documents 1 to 4 and the like. Patent Document 1 differs from the present application in which a magnetic material coated sheet is used by using a magnetic absorption plate. Further, Patent Document 1 does not define the detailed configuration and characteristics of the non-contact IC tag label. Patent Document 2 differs from the present application in terms of a structure in which a magnetic core member is housed in an antenna coil. Patent Document 3 describes that a magnetic sheet is used for a non-contact IC tag label attached to a metal or the like, but is different from the configuration of the present application. Patent Document 4 also does not use a magnetic material coated sheet, and does not define the detailed configuration and characteristics of the non-contact IC tag label.

JP 2000-113142 A JP 2001-56847 A JP 2003-85501 A Japanese Patent No. 3647446

In the prior art, when a contactless IC tag label is attached to a product made of a metal material, and identification data is read from the IC tag using a reader / writer in this state, the magnetic field generated from the reader / writer antenna is the antenna of the IC tag. While it is absorbed by the metal of the product without reaching the coil, a part of the magnetic field is reflected to cancel the magnetic flux loop, and as a result, sufficient power cannot be supplied to the IC chip of the non-contact IC tag, and communication There was a problem that made it impossible.
The present invention has been made in consideration of the above points, and has been completed through research to provide a non-contact IC tag label that can be read and written regardless of the material of the product to which the non-contact IC tag label is attached. is there.

  The first of the gist of the present invention for solving the above problems is that an IC chip with a memory function capable of reading information in a non-contact manner and an antenna coil electrically connected to the IC chip are formed on the inlet base. A surface base material made of paper or plastic is laminated on the antenna coil surface, and a magnetic material coating sheet is laminated on the side opposite to the inlet-base antenna coil so that the coated surface is on the inlet base side, and further coated In a non-contact IC tag label having a structure in which an adhesive layer for attaching to a body and release paper are laminated on the adherend side of a magnetic material coated sheet, the initial permeability at a frequency of 13.56 MHz of the magnetic material coated sheet is The contactless IC tag label has a thickness of 20 or more and a thickness in the range of 50 μm to 300 μm.

  According to a second aspect of the present invention, an IC chip with a storage function capable of reading information in a non-contact manner and an antenna coil electrically connected to the IC chip are formed on the inlet base, and a paper is placed on the antenna coil surface of the inlet base. Alternatively, a surface base material made of plastic is laminated, and a magnetic material coated sheet is laminated on the side opposite to the inlet base antenna coil so that the sheet surface is on the inlet base side, and further adhered to the adherend. In the non-contact IC tag label having a structure in which a pressure-sensitive adhesive layer and release paper are laminated on the adherend side of the magnetic material coated sheet, the initial permeability at a frequency of 13.56 MHz of the magnetic material coated sheet is 20 or more. The non-contact IC tag label has a thickness in the range of 50 μm to 300 μm.

  According to a third aspect of the present invention, an IC chip with a storage function capable of reading information in a non-contact manner and an antenna coil electrically connected thereto are formed on an inlet base, and a paper is placed on the antenna coil surface of the inlet base. Alternatively, a first surface base material made of a plastic film is laminated, and a second surface base material made of plastic is laminated, and a magnetic material coating sheet is applied to the side surface opposite to the inlet-based antenna coil. In a non-contact IC tag label having a structure in which an adhesive layer and a release paper for laminating on the inlet base side and further sticking to the adherend are laminated on the adherend side of the magnetic material coated sheet, the magnetic material The initial permeability at a frequency of 13.56 MHz of the coated sheet is 20 or more, and the thickness is in the range of 50 μm to 300 μm. Contact IC tag label.

  According to a fourth aspect of the present invention, an IC chip with a storage function capable of reading information without contact and an antenna coil electrically connected to the IC chip are formed on the inlet base, and a paper or paper is formed on the antenna coil surface of the inlet base. A first surface base material made of plastic film is laminated, and a second surface base material made of plastic is further laminated, and a magnetic material coated sheet is placed on the side surface opposite to the inlet-based antenna coil. In a non-contact IC tag label having a structure in which an adhesive layer and a release paper for laminating on the adherend are laminated on the adherend side of the magnetic material coating sheet, the magnetic material coating is applied. The initial permeability at a frequency of 13.56 MHz of the work sheet is 20 or more, and the thickness is in the range of 50 μm to 300 μm. Contact IC tag label.

In the above, the minimum operating magnetic field strength (H _min ) of the non-contact IC tag label 1 at a frequency of 13.56 MHz when pasted on a non-metal surface is in the range of 0.5 A / m to 3.0 A / m, Is preferable because stable non-contact communication is possible. Similarly, the minimum operating magnetic field strength (H _min ) of the non-contact IC tag label 1 at a frequency of 13.56 MHz when attached to a metal surface is in the range of 1.0 A / m to 3.5 A / m. Is preferable.

According to a fifth aspect of the present invention, an IC chip with a storage function capable of reading information in a non-contact manner and an antenna coil electrically connected to the IC chip are formed on the inlet base, and the side surface opposite to the inlet base antenna coil. Includes a non-contact IC tag label having a magnetic material coated sheet between an inlet base and an adhesive layer, and the minimum operation at a frequency of 13.56 MHz when the non-contact IC tag label is attached to a non-metal surface. The magnetic field strength (H _min ) is in the range of 0.5 A / m to 3.0 A / m, and the minimum operating magnetic field strength (H _min ) at a frequency of 13.56 MHz when attached to a metal surface is 1.0 A. / M to 3.5 A / m, which is a non-contact IC tag label.

Since the non-contact IC tag label of the present invention has a magnetic material coated sheet having an initial permeability of 20 or more between the inlet base and the adherend, the non-contact IC tag label is adhered to an object made of a metal material or a metal container. However, the influence of communication obstruction due to the demagnetizing field can be reduced.
Unlike ordinary polymer-filled magnetic sheets, the magnetic material coated sheet is used, and the thickness of the coated sheet is in a certain range, so that processing of non-contact IC tag labels is easy. The finished IC tag label is also flexible and can be easily attached to a curved surface. In addition, the label is less likely to spontaneously peel off after application.
In the case of the non-contact IC tag label according to claim 7, the label can be suitably used as a normal non-contact IC tag label even if it is attached to a non-metal surface or a metal surface.

The present invention will be described below with reference to the drawings.
FIG. 1 is a schematic plan view showing an example of a non-contact IC tag label of the present invention, FIG. 2 is a schematic cross-sectional structure diagram of the first embodiment, and FIG. 3 is a schematic cross-sectional structure diagram of the second embodiment. 4 is a schematic cross-sectional structure diagram of the third embodiment, FIG. 5 is a schematic cross-sectional structure diagram of the fourth embodiment, and FIG. 6 is a diagram for explaining the influence of the metal body received by the non-contact IC tag. .

The non-contact IC tag label 1 of the present invention has a planar antenna coil 2 formed on an inlet base 11 as shown in FIG. 1 and IC chips 3 are mounted on both end portions 2 a and 2 b of the antenna coil 2. Since the mounting is performed by a conductive adhesive sheet or the like, electrical connection is also ensured.
The antenna coil 2 is designed to transmit and receive electromagnetic wave signals having a frequency of 13.56 MHz. The IC chip 3 is an integrated circuit having a processing function, a storage function, and an input / output function. Information can be stored in the storage unit, and the processing function unit can store information in the storage unit or read information from the storage unit. In response to a command represented by an electromagnetic wave signal received by the antenna coil 2, the IC chip 3 stores information in the storage unit or reads information stored in the storage unit, and transmits a signal representing the information to the antenna. Give to coil 2.

The conducting member 7 is a member for guiding one end of the antenna coil to the end 2a of the antenna coil via the lower surface of the inlet base 11 in order to prevent a short circuit of the coil. The above planar configuration is the same as that of a normal non-contact IC tag label, and there is no particular difference.
The inlet base 11 is a film in which the antenna coil 2 is formed on the base film and the IC chip 3 is mounted as described above. Generally, the inlet base 11 may be simply referred to as “base film” or “antenna sheet”. .

  The schematic cross-sectional structure of the first embodiment of the non-contact IC tag label 1 of the present invention is as shown in FIG. 2 in which a surface base material 4 made of paper or plastic is laminated on the surface of the antenna coil 2 of the inlet base 11 and the inlet base. 11 is laminated on the side opposite to the antenna coil 2 with a magnetic material coated sheet 10 coated with a highly permeable magnetic material so that the coated surface of the magnetic material 10b is on the inlet base 11 side. The pressure-sensitive adhesive layer 6 and the release paper 8 for adhering to the adherend are laminated. The surface base material 4 is for the purpose of protecting the IC chip 3 and the antenna coil 2 and can be provided with a print display or the like as necessary. The magnetic material coated sheet 10 is a material in which a magnetic material 10b is coated on a plastic sheet 10a, and the magnetic material 10b is an integral form in which the magnetic material 10b is coated on the plastic sheet 10b so as not to be peeled off.

  The release paper 8 is a material having a releasable surface generally called a separate paper and is a material for protecting the pressure-sensitive adhesive layer 6. When sticking on the adherend, the release paper 8 is removed and sticking is performed with the adhesive layer 6. In many cases, the pressure-sensitive adhesive layer 6 is applied to the release paper 8 in advance, and this is adhered to the magnetic material coating sheet 10 of the IC tag label 1.

  Although adhesive layers 9a and 9b are illustrated between the surface base material 4 and the inlet base 11, and between the inlet base 11 and the magnetic material coating sheet 10, the adhesive layers 9a and 9b are not limited to adhesives, and may be adhesives. It may be good, or it may be adhered by melted polyethylene or the like, or may be obtained by melt coating (extrusion coating) of a resin such as polyethylene and simply forming a close-contact structure, regardless of the bonding means. The same applies to the following embodiments.

  The schematic cross-sectional structure of the second embodiment of the non-contact IC tag label 1 according to the present invention is as shown in FIG. 3, in which a surface base material 4 made of paper or plastic is laminated on the surface of the antenna coil 2 of the inlet base 11 and the inlet base. 11 is laminated on the side opposite to the antenna coil 2 with a highly permeable magnetic material coated sheet 10 so that the surface of the sheet 10a is on the inlet base 11 side, and is further adhered to an adherend. 6 and release paper 8 are laminated. The magnetic material coating sheet 10 and other contents are the same as those in the first embodiment.

The schematic cross-sectional structure of the third embodiment of the non-contact IC tag label 1 of the present invention is obtained by laminating a first surface base material 4 made of paper or a plastic film on the antenna coil surface of the inlet base 11, as shown in FIG. Further, a second surface base material 5 made of plastic is laminated, and a highly permeable magnetic material coating sheet 10 is provided on a side surface of the inlet base 11 opposite to the antenna coil 2, and a coating surface of the magnetic material 10 b is provided on the inlet base 11. The pressure-sensitive adhesive layer 6 and the release paper 8 are laminated so as to be on the side and further adhered to the adherend.
Although it differs from the first embodiment only in having two layers of the surface base materials 4 and 5, the effect of further strengthening the protection is produced by having the second surface base material 5. The first surface base material 4 and the second surface base material 5 are illustrated as being bonded by an adhesive layer 9c, but, like the adhesive layers 9a and 9b, do not take an adhesive means. is there. The magnetic material coating sheet 10 and other contents are the same as those in the first embodiment.

The schematic cross-sectional structure of the fourth embodiment of the non-contact IC tag label 1 of the present invention is obtained by laminating a first surface base material 4 made of paper or a plastic film on the surface of the antenna coil 2 of the inlet base 11 as shown in FIG. Further, a second surface base material 5 made of plastic is laminated, and on the side opposite to the antenna coil 2 of the inlet base 11, a highly permeable magnetic material coating sheet 10 is placed on the side of the inlet base 11. The pressure-sensitive adhesive layer 6 and the release paper 8 are laminated so as to adhere to the adherend.
The second embodiment is different from the second embodiment only in having two layers of the surface base materials 4 and 5, but having the second surface base material 5 has an effect of further strengthening the protection. The adhesive layer 9c does not use an adhesive means as in the third embodiment. The magnetic material coating sheet 10 and other contents are the same as those in the first embodiment.

In general, when the antenna coil 2 of the non-contact IC tag receives a magnetic flux loop from the reader / writer, when there is no metal body in the vicinity or when the antenna coil 2 is attached to the non-metal body N, the antenna as shown in FIG. A magnetic flux loop R is generated around the line 2S. On the other hand, when the metal body K is near the antenna coil 2, an eddy current is generated in the metal body K as shown in FIG. 6B, and the demagnetizing field generated by the generated eddy current cancels the magnetic flux loop. (In FIG. (B), the broken-line loop H indicates a lost magnetic flux loop). As a result, only a small magnetic flux loop R remains only in the portion around the antenna line 2S, and the communication distance is significantly shortened.
On the other hand, as shown in FIG. 6C, when a magnetic material (magnetic sheet or magnetic material coated sheet) Z is inserted between the metal body K and the antenna wire 2S, the magnetic material Z has high permeability. Since the magnetic flux concentrates on the magnetic material Z and does not flow to the metal body K, no demagnetizing field is generated and the magnetic flux is not lost, so that the magnetic flux loop R is formed and the communication distance is improved.
In each of the embodiments described above, since the magnetic material coating sheet 10 is inserted between the antenna wire 2S and the metal body that is the adherend, the above effect is produced.

In each of the above embodiments, the initial permeability of the magnetic material coated sheet 10 at a frequency of 13.56 MHz must be 20 or more. This is to increase the magnetic flux density, and if it is less than 20, the effect of using the magnetic material coating sheet 10 becomes insufficient. The magnetic permeability μ is an evaluation index of soft magnetism and indicates the ease of magnetization with respect to a magnetic field applied from the outside.
The magnetic permeability is defined by magnetic permeability μ = magnetic flux density B / magnetic field strength H. The larger the magnetic permeability μ, the larger the magnetization with a small magnetic field, and the better the characteristics in general. The ratio of the vacuum permeability μo is referred to as the relative permeability, but simply speaking this value usually refers to this value.

Complex alternating permeability is used for AC magnetic fields. In an alternating magnetic field, the magnetic flux density cannot follow the change in the magnetic field, causing a phase delay of the magnetic field wave. Therefore, consider the real part μ ′ and imaginary part μ ″ of the complex relative permeability. The real part μ ′ is the same as the magnetic field. This relates to the magnetic flux density component of the phase, and the imaginary part μ ″ is an index including a phase delay and corresponds to a magnetic energy loss.
As the real part μ ′ increases, the complex relative permeability increases. In other words, a material having a high complex relative permeability has a high real part μ ′ in the complex relative permeability. When a material having a high real part μ ′ in the complex relative permeability exists in the magnetic field, the magnetic lines of force pass through the member in a concentrated manner.

The initial magnetic permeability refers to the rising slope at the origin on the magnetization curve. In other words, it refers to a coefficient of how much magnetic flux density B is generated when a minute magnetic field H is applied in the absence of a magnetic field. The slope of the part that does not return on the magnetization curve beyond the range of the initial permeability is the reversible permeability, the slope of the straight line connecting each point on the curve and the origin is the total permeability, and the maximum value of the total permeability is the maximum permeability. This is called magnetic susceptibility. Thus, the magnetic permeability is not constant but varies with the magnetizing force.
Generally, a magnetic material alone exhibits a high initial permeability, but a commercially available magnetic material (mixed product with a resin material or the like) used in combination with other materials has an initial permeability of about 20 to 60. However, in general, there are many commercially available magnetic material sheets in which a magnetic material is dispersed in a polymer or rubber material. In order to obtain an effective effect, these materials have a thickness of about 200 μm to 5 mm. It becomes. Further, there are many cases where the surface is rough and the processability is inferior without flexibility. In addition, when the surface is rough, there is also a problem that the adhesion with the pressure-sensitive adhesive is lowered and the IC tag label is easily peeled off from the adherend.
Therefore, a material obtained by applying a magnetic material to a plastic sheet is required. In this case, the smooth surface of the plastic sheet can be used. Some are made of sintered ferrite, but are plate-like and not flexible, and are not suitable for IC tag labels.

  Moreover, the thickness of the magnetic material coating sheet 10 must be in the range of 50 μm to 300 μm. However, it is preferably 50 μm to 200 μm, more preferably 50 μm to 150 μm. This range is used because flexibility as a label is obtained, processability is good, and adhesion to an adherend is also good. If the total thickness of the magnetic material coating sheet 10 including the base material sheet 10a is less than 50 μm, the required coating thickness of the magnetic material cannot be obtained, and sufficient effects cannot be obtained. Further, when the thickness exceeds 300 μm, the thickness of the non-contact IC tag label 1 becomes too thick.

When the adherend is a non-metallic surface, the non-contact IC tag label 1 of the present invention has a minimum operating magnetic field strength (H _min ) at a communication frequency of 13.56 MHz when adhered to the non-metallic surface. The range is preferably 0.5 A / m to 3 A / m. In general, in a proximity type IC card (VICC (Vicinity Integrated Circuit Card)) having an operating range of 70 cm or less, the minimum operating magnetic field strength (H _min ) is 150 mA / m rms, and the maximum operating magnetic field strength (H _max ) is 5 A / m rms, and must operate continuously in the range of H _min and H _max (JISX6323-2, 6.2 operating magnetic field strength). This standard is considered to be applicable to non-contact IC tag labels as well.

The fifth to seventh aspects of the present invention also define the minimum operating magnetic field strength (H _min ) of the non-contact IC tag label. That is, when the adherend is a metal surface, the minimum operating magnetic field strength (H _min ) of the non-contact IC tag label 1 is in the range of 1.0 A / m to 3.5 A / m at a communication frequency of 13.56 MHz. It is preferable that This is to ensure stable communication on the metal surface. Although the communication characteristics are improved by inserting the magnetic material coated sheet 10, it is generally difficult to achieve 150 mA / m as defined by JIS.

According to the above JIS standard, the above standard seems to be too loose, but in general, when a magnetic material sheet or magnetic material coated sheet 10 is adhered to the non-contact IC tag label 1, communication when it is adhered to a metal surface Even if the distance is increased, the communication distance when it is attached to a non-metallic surface is shorter than that of a general non-contact IC tag label that does not use a magnetic material, and the minimum operating magnetic field strength (H _min ) is large. turn into. Therefore, in a non-contact IC tag label that can be used even when attached to a metal body, it is appropriate to set the minimum operating magnetic field strength (H _min ) range as described above.

  The metal surface is a very thin metal layer. Since a metal layer deposited on a plastic substrate with a thickness of several nm also blocks non-contact communication, a metal surface with a thickness greater than this level is also a target. On the other hand, the non-metallic surface refers to the surface of a composition made of a material other than metal. Even if there is a metal on the lower surface of the non-metal body, it is affected, so that it is necessary that there is no metal within 10 mm from the surface of the antenna coil 2 when the non-contact IC tag label 1 is attached to the adherend.

The non-contact IC tag label (Claim 7) that satisfies the conditions of the minimum operating magnetic field strength (H _min ) for both the case of being attached to a metal body and the case of being attached to a non-metal body is used as a metal surface sticking label. Even when used as a normal non-contact IC tag label for a non-metal surface, it becomes a practical non-contact IC tag label.

As described above, the neighborhood type IC card (VICC) has a minimum operating magnetic field strength (H _min ) of 150 mA / m rms and a maximum operating magnetic field strength (H _max ) of 5 A / m rms. The test method for the minimum operating magnetic field strength (H _min ) is described in JIS X 6305-7: 2001, 7. It is defined in the functional test of VICC. The minimum operating magnetic field strength (H _min ) defined in the claims of the present application is also based on the test method.
When an ordinary non-contact IC tag label that does not use a magnetic material sheet meets the requirement of a minimum operating magnetic field strength (H _min ) of 150 mA / m, it is a reader / writer with 1 W (watt) output, 300 mm to 400 mm, 4 to 8 W With an output reader / writer, communication is possible even at a distance of about 500 mm to 700 mm. On the other hand, the minimum operating magnetic field strength (H _min ) in the range of 0.5 A / m to 3.0 A / m is a non-contact IC tag label that is affected by the magnetic material coated sheet 10. In this case, the communication distance is about 100 mm to 300 mm with a reader / writer of 1 W output and a reader / writer of 50 mm to 100 mm and 4 to 8 W output.
Even if it is not based on the test method prescribed | regulated to the said JIS or ISO, the rough minimum operating magnetic field intensity | strength can be known by grasping | ascertaining the communication distance with the said reader / writer.

Next, the manufacturing method of the non-contact IC tag label 1 of this invention is demonstrated.
In the manufacture of the non-contact IC tag label 1, the magnetic material coated sheet 10 has a considerable thickness. Therefore, in the case of mass production, the magnetic material coating is applied to the multi-faced body of the inlet base 11 as in the case of the magnetic card or the IC card. It is considered appropriate to temporarily manufacture the work sheet 10, the surface base material 4, the adhesive sheet, and the like and then manufacture them in the press laminating process. However, when manufacturing a small amount easily, it can be as follows.

First, the antenna coil 2 is manufactured on a base material to be the inlet base 11 by a process such as photoetching or printing. Next, the IC chip 3 is attached to both end portions 2a and 2b of the antenna coil 2 with an anisotropic conductive adhesive sheet or the like to make electrical connection. The surface base material 4 is laminated on the antenna coil 2 surface side of the inlet base 11, the magnetic material coating sheet 10 is adhered to the surface of the inlet base 11 on the adherend side, and then peeled off on the magnetic material coating sheet 10 surface. The adhesive layer 6 is applied to the paper 8 and attached.
The above is the case of the first and second embodiments, but in the case of the third and fourth embodiments, the second surface base material 5 is manufactured in the same manner by further laminating the first surface base material 4 surface. it can.

<Embodiments related to other materials>
(1) Substrate for inlet base A wide variety of plastic films can be used, and the following single films or composite films thereof can be used.
Polyethylene terephthalate (PET), PET-G (terephthalic acid-cyclohexanedimethanol-ethylene glycol copolymer), polyvinyl chloride, vinyl chloride-vinyl acetate copolymer, polycarbonate, polyamide, polyimide, cellulose diacetate, cellulose triacetate, Polystyrene, ABS, polyacrylate, polypropylene, polyethylene, polyurethane, and the like.

(2) Surface substrate A wide variety of plastic films and paper substrates can be used. As the plastic film, those listed above can be used, and as the paper substrate, high-quality paper, coated paper, craft paper, glassine paper, synthetic paper, latex, melamine-impregnated paper, or the like can be used. When performing printer printing on the surface, paper substrates such as fine paper and coated paper are particularly preferable.

(3) Adhesive, pressure-sensitive adhesive In the present specification, the term adhesive refers to various types such as a solvent type, a polymerization type, an ultraviolet curable type, an emulsion type, and a heat-melt type. Shall be included. It may be in the form of a sheet instead of being liquid. In either case, the purpose can be achieved by bonding the two materials. Further, in the present specification, the term “adhesive” refers to an adhesive that keeps an intermediate tack state indefinitely without a significant increase in viscosity.
Various resin compositions such as natural rubber, nitrile rubber, epoxy resin, vinyl acetate emulsion, acrylic, acrylate copolymer, polyvinyl alcohol, phenol resin, etc. Material can be used.

Hereinafter, actual embodiments will be described using examples.
As the magnetic material coated sheet 10, a magnetic material coated sheet (coated with a magnetic material made of a ferrite-based material on a polyethylene terephthalate (PET) sheet having a thickness of 25 μm and coated to a thickness of 100 μm after drying) Prototype).
The initial magnetic permeability (measurement method by the coaxial tube method) at a frequency of 13.56 MHz of the magnetic material coated sheet 10 is 20. The size of the magnetic material coating sheet 10 was the same size (54 mm × 86 mm) as the inlet base 11 of the non-contact IC tag label 1.

  As the base material for the inlet base 11 of the IC tag label, a material obtained by dry laminating a 25 μm thick aluminum foil on a transparent biaxially stretched PET film having a thickness of 38 μm, and having an antenna coil pattern after applying a photosensitive resist thereto. The photomask was exposed and exposed. After exposure and development, photoetching was performed to complete the inlet base 11 having the antenna coil 2 as shown in FIG. The antenna coil 2 has an outer shape of approximately 45 mm × 76 mm.

The IC chip 3 having a planar size of 1.0 mm square and a thickness of 150 μm was mounted on both ends 2a and 2b of the inlet base 11 with heat pressure applied in a face-down state. Since an anisotropic conductive adhesive sheet is used for mounting, electrical connection is ensured.
Next, after the surface base material (coated paper) 4 having a thickness of 40 μm was adhered to the antenna coil 2 surface side of the inlet base 11 via the adhesive layer 9a on the antenna coil 2 surface (see FIG. 2), it was prepared in advance. The magnetic material coated sheet 10 is laminated via the adhesive layer 9b so that the magnetic material 10b coated surface is on the inlet base 11 side, and then an adhesive (acrylic) is applied to the PET sheet 10a surface side of the magnetic material coated sheet 10. A non-contact IC tag label 1 was completed by sticking a release paper 8 coated with an acid ester copolymer system) as an adhesive layer 6 having a thickness of 16 μm.

  As the magnetic material coated sheet 10, a magnetic material coated sheet (prototype) obtained by coating a magnetic material made of a ferrite-based material on a PET sheet having a thickness of 25 μm and coating it so that the thickness after drying becomes 120 μm. used. The initial magnetic permeability (measurement method by the coaxial tube method) at a frequency of 13.56 MHz of the magnetic material coated sheet 10 is 32. The size of the magnetic material coating sheet 10 was the same size (54 mm × 86 mm) as the inlet base 11 of the non-contact IC tag label 1.

  The same base material for the inlet base 11 as in Example 1 and the IC chip 3 are used, and the IC chip 3 is hot-pressed in a face-down state on the antenna coil both ends 2a and 2b of the inlet base 11 on which the antenna coil 2 is formed. I put it on. The mounting method and materials were the same as in Example 1. Next, a surface substrate (coated paper) 4 having a thickness of 40 μm and a second surface substrate 5 made of a PET film having a thickness of 15 μm are sequentially placed on the antenna coil 2 surface side of the inlet base 11 through adhesive layers 9a and 9c. Glued (see FIG. 4). Finally, the magnetic material coated sheet 10 prepared previously is laminated via the adhesive layer 9b so that the magnetic material 10b coated surface side is the inlet base 11 side, and then the adhesive ( A non-contact IC tag label 1 was completed by sticking a release paper 8 on which an acrylic acid ester copolymer system) was applied as an adhesive layer 6 having a thickness of 16 μm.

The minimum operating magnetic field strength (H _min ) of the non-contact IC tag label 1 of Example 1 and Example 2 is set according to JISX 6305-7: 2001 7. The minimum operating magnetic field strength (H _min ) at a frequency of 13.56 MHz when measured by the test method specified in the VICC functional test and attached to a non-metallic surface is in the range of 0.5 A / m to 3.0 A / m. It was confirmed that the minimum operating magnetic field strength (H _min ) when adhered to a metal surface was in the range of 1.0 A / m to 3.5 A / m.

The non-contact IC tag label 1 of Example 1 and Example 2 and the conventional non-contact IC tag label that does not use the magnetic material coating sheet 10 (the configuration other than not using the magnetic material coating sheet 10 is described in Example 1). And the same contents), the non-contact IC tag label 1 of Example 1 and Example 2 is a reader / writer without any trouble even when it is attached to a metal container (printing ink can). However, when the conventional non-contact IC tag label 1 was attached to a metal container (printing ink can), reading was impossible.
When pasted on a non-metal surface, the minimum operating magnetic field strength (H _min ) at a frequency of 13.56 MHz, in the range of 0.5 A / m to 3.0 A / m, the non-existence of Example 1 and Example 2. It was also confirmed that the contact IC tag label can be communicated without any problem.

It is a schematic plan view which shows the example of the non-contact IC tag label of this invention. It is a schematic sectional structure figure of the 1st embodiment. It is a schematic sectional structure figure of the second embodiment. It is a schematic sectional structure figure of the 3rd embodiment. It is a schematic sectional structure figure of the 4th embodiment. It is a figure explaining the influence of the metal body which a non-contact IC tag receives.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Non-contact IC tag label 2 Antenna coil 3 IC chip 4 Surface base material, 1st surface base material 5 2nd surface base material 6 Adhesive layer 7 Conductive member 8 Release paper 9, 9a, 9b Adhesive layer 10 Magnetic material Coating sheet 11 Inlet base

Claims (7)

An IC chip with a memory function capable of reading information in a non-contact manner and an antenna coil electrically connected thereto are formed on the inlet base, and a surface base material made of paper or plastic is laminated on the antenna coil surface of the inlet base. Then, on the side opposite to the inlet base antenna coil, a magnetic material coated sheet is laminated so that the coated surface is on the inlet base side, and an adhesive layer and a release paper are attached to the adherend. In the non-contact IC tag label of the structure laminated on the adherend side of the magnetic material coated sheet, the magnetic material coated sheet has an initial permeability of 20 or more at a frequency of 13.56 MHz and a thickness in the range of 50 μm to 300 μm. There is a non-contact IC tag label. An IC chip with a memory function capable of reading information in a non-contact manner and an antenna coil electrically connected thereto are formed on the inlet base, and a surface base material made of paper or plastic is laminated on the antenna coil surface of the inlet base. Then, on the side opposite to the inlet base antenna coil, a magnetic material coated sheet is laminated so that the sheet surface is on the inlet base side, and an adhesive layer and release paper for sticking to the adherend are further provided. In the non-contact IC tag label of the structure laminated on the adherend side of the magnetic material coated sheet, the magnetic material coated sheet has an initial permeability of 20 or more at a frequency of 13.56 MHz and a thickness in the range of 50 μm to 300 μm. There is a non-contact IC tag label. An IC chip with a memory function capable of reading information in a non-contact manner and an antenna coil electrically connected to the IC chip are formed on the inlet base, and a first surface made of paper or plastic film on the antenna coil surface of the inlet base. Laminate the base material, and further laminate the second surface base material made of plastic, and laminate the magnetic material coating sheet on the side opposite to the inlet base antenna coil so that the coated surface is on the inlet base side. Furthermore, in a non-contact IC tag label having a structure in which an adhesive layer for attaching to an adherend and a release paper are laminated on the adherend side of the magnetic material coating sheet, the frequency of the magnetic material coating sheet is 13.56 MHz. A non-contact IC tag label having an initial magnetic permeability of 20 or more and a thickness in a range of 50 μm to 300 μm. An IC chip with a memory function capable of reading information in a non-contact manner and an antenna coil electrically connected to the IC chip are formed on the inlet base, and a first surface made of paper or plastic film on the antenna coil surface of the inlet base. Laminate the base material, and further laminate the second surface base material made of plastic, and laminate the magnetic material coated sheet on the side opposite to the inlet base antenna coil so that the sheet surface is on the inlet base side. Furthermore, in a non-contact IC tag label having a structure in which an adhesive layer for attaching to an adherend and a release paper are laminated on the adherend side of the magnetic material coating sheet, the frequency of the magnetic material coating sheet is 13.56 MHz. A non-contact IC tag label having an initial magnetic permeability of 20 or more and a thickness in a range of 50 μm to 300 μm. The non-contact IC tag label minimum operating magnetic field strength (H _min ) at a frequency of 13.56 MHz when pasted on a non-metal surface is in the range of 0.5 A / m to 3.0 A / m. The non-contact IC tag label according to any one of claims 1 to 4. 2. The non-contact IC tag label minimum operating magnetic field strength (H _min ) at a frequency of 13.56 MHz when attached to a metal surface is in the range of 1.0 A / m to 3.5 A / m. The non-contact IC tag label according to any one of claims 4 to 4. An IC chip with a memory function capable of reading information in a non-contact manner and an antenna coil electrically connected to the IC chip are formed on the inlet base, and a magnetic material coated sheet is provided on the side opposite to the inlet base antenna coil. A non-contact IC tag label between the inlet base and the pressure-sensitive adhesive layer, wherein the minimum operating magnetic field strength (H _min ) at a frequency of 13.56 MHz when the non-contact IC tag label is attached to a non-metal surface is 0 .5 A / m to 3.0 A / m, and the minimum operating magnetic field strength (H _min ) at a frequency of 13.56 MHz when adhered to a metal surface is 1.0 A / m to 3.5 A / m. A non-contact IC tag label characterized by being a range.

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