JP4723447B2 - RFID tag system for wallet type package - Google Patents

Description

  The present invention relates to RFID (Radio Frequency) for products in which tablets, capsules and the like are packed in a package containing a metal material such as aluminum foil and stored in a non-metallic container, particularly a wallet type (wallet type) container. IDentification, non-contact individual identification technology using radio frequency electromagnetic waves) In particular, it relates to an RFID tag system with a tag. In particular, RFID for a wallet package that can read information from an RFID tag attached to a wallet package with high accuracy It relates to the tag system.

  Generally, an RFID tag incorporates an ID number or equivalent identification information in an integrated circuit called an RFID chip, and reads the information from the outside by wireless means via an antenna connected to the RFID chip. One of the uses of this RFID tag is a product trace system. For example, when the manufacturing process or the distribution process is necessary, this trace system communicates between the RFID tag and the communication device, and tracks the manufacturing history and distribution history of the product attached with the RFID tag from the obtained ID code / date / time / communication location. And manage.

  Especially in the field of pharmaceuticals, individual product histories using the trace system such as quality control in the manufacturing process, authenticity judgment in the distribution process, prevention of erroneous sales at pharmacies, feedback when defects occur in the market, etc. It is desired to manage.

  As a conventional technology of the trace system using the RFID tag, for example, the following patent document can be cited. Patent Document 1 reads information on an RFID tag attached to a medicine at the time of sale and uses the medicine name as a terminal. A system that prevents the wrong medicine from passing over to the user by displaying and comparing it with prescription data is described. Patent Document 2 stores information on RFID tags attached to medicines from the medicine shelf. A system that reads and stores inventory of medicine shelves is described.

  In addition, in order to operate these systems with high reliability, it is necessary to reliably read the information of the attached RFID tag, and as a document on this reading method, for a concrete fume pipe as a construction material, In order to improve the reading accuracy of the attached RFID tag, Patent Document 3 describes a jig that embeds the RFID tag antenna with a direction suitable for reading, and also relates to the posture of the product to improve the reading accuracy. Firstly, Patent Document 4, which describes a mechanism for maintaining the orientation of the RFID tag antenna in a certain direction suitable for reading, shows the position of the RFID tag attached to the inside of the box with a display on the outside of the box, Patent Documents 5 and 6 that describe a method for designating a reading position where reading accuracy is increased can be mentioned.

JP 2003-233673 A JP 2003-292123 A JP 2000-91963 A JP 2003-58843 A Japanese Patent Application Laid-Open No. 2004-115057 JP 2004-191481 A

  Generally, there are tablets and capsules as main forms of pharmaceuticals, and a PTP (Press Through Package) package is known as a typical example of individual packaging of these tablets and capsules. This PTP package is formed by stacking a resin such as PVC (Poly Vinyl Chloride), PP (Poly Propylene), a metal material (aluminum foil) and a resin, and projecting into a convex shape. These medicines are put in a container, the back surface is sealed with aluminum foil, and the user pushes the convex storage portion with a finger to break the aluminum foil and take out tablets and the like. As the packaging form of tablets and capsules currently on the market, 90% or more is the PTP package. Moreover, since this PTP package body is inferior in moisture resistance of the resin sheet side part compared with the aluminum foil side, not only the back surface (removal surface) of the PTP package body but also both surfaces with the aluminum foil coated on the convex side. Some form an aluminum PTP package. The PTP package is formed by laminating a resin and a metal material (aluminum foil). For example, the PTP package is manufactured by thermocompression bonding a resin and an aluminum stay.

  Furthermore, as another form of the medicine, there is known one in which the PTP package is stored in a paper package having a wallet shape including a spine called a wallet type.

Since the wallet type package for storing the PTP package in which tablets or capsules are packed according to the above-described prior art, when the RFID tag is attached to the package, a metal material such as aluminum foil is used. This has the problem of affecting the electromagnetic waves used in the process and significantly degrading the data reading accuracy.
On the other hand, in the case of a writable RFID tag, there is an advantage that information on a patient taking a medicine can be written and managed together with the actual medicine. However, because of the feature of the RFID tag that can read the information wirelessly from a remote location, there is a risk that personal information such as the patient and its treatment data will be read and leaked regardless of the intention of the person concerned .

  The object of the present invention is to eliminate the problems and dangers caused by the prior art described above, and even a wallet type package containing a PTP package using a metal material such as an aluminum foil is excellent with the communication device side. The present invention is to provide an RFID tag system for a wallet package that can communicate with each other and can easily protect information therein.

  In order to achieve the above object, the present invention provides a PTP package including a storage unit for storing an object, and a cover and a back for storing the PTP package. An RFID tag system comprising a wallet type package including a front cover and a back cover, and a wallet type package in which a metal material is installed at least along the back cover, and an RFID tag including a long antenna, An RFID tag is provided along the longitudinal direction of the spine of the wallet package, and the width Wm of the spine of the wallet package to which the RFID tag is attached is set to 1 to 1.5 times the width Wa of the antenna. This is the first feature.

  The present invention also provides a PTP package including a storage unit for storing an object by coating at least one surface with a metal material, and a wallet having a wallet shape including a cover, a back cover, and a back cover for storing the PTP package A RFID tag system comprising a mold package and an RFID tag including a long antenna, wherein the other surface of the wallet package is continuously closed and the other side of the package is closed and non-conductive A second feature is that a first flip surface is provided and the RFID tag is attached along the longitudinal direction of the first flip surface.

  Furthermore, the present invention relates to a PTP package including a storage unit for storing an object by coating at least one surface with a metal material, and a wallet having a wallet shape including a cover, a back cover, and a back cover for storing the PTP package. In the RFID tag system comprising a mold package and an RFID tag including a long antenna, a first flip surface that closes the other surface of the package continuously with the back cover of the wallet package, Third flip surface is provided with a second flip surface on which a metal material covering the cover is placed continuously with the first flip surface, and a first RFID tag is provided on the cover facing the second flip surface. And

  According to the present invention, in the RFID tag system of the third feature, a metal material is installed on the spine cover, a second RFID tag is provided on the metal material of the spine cover, and the width Wm of the spine cover is set. The fourth feature is that the width is set to 1 to 1.5 times the width Wa of the antenna.

  An RFID tag system for a wallet type package according to the present invention includes, for example, an RFID tag placed on a plane (cover and back cover) formed by a PTP package including aluminum foil and a plane (back cover) orthogonal to the plane, By setting the width Wm of the spine cover to 1 to 1.5 times the width Wa of the antenna, it is possible to ensure the transmission and reception of information between the RFID tag and the communication device. Furthermore, the RFID tag system for a wallet-type package according to the present invention includes a first flip surface made of a non-conductive material that continuously closes the other surface of the package in succession to the front cover or the back cover, and the first flip surface. By providing a second flip surface on which a conductive material covering the cover is continuously disposed and attaching an RFID tag to the surface of the second flip surface facing the cover, depending on whether the second flip is opened or closed It is possible to control whether the communication with the RFID tag is valid or invalid. By this control, unintended data leakage on the RFID tag can be prevented. As described above, the RFID tag system according to the present invention can accurately read and write the communication with the RFID tag attached to the package at a low cost.

  Hereinafter, an RFID tag system for a wallet type package according to an embodiment of the present invention will be described with reference to the drawings. 1 is a diagram showing a schematic configuration of a package constituting an RFID tag system according to a first embodiment of the present invention, FIG. 2 is a partial sectional view of the package according to the embodiment shown in FIG. 1, and FIG. 3 is a configuration of the RFID tag. FIG. 4 is a front view showing an RFID tag installed on an aluminum foil, and FIG. 5 is a diagram showing the maximum communicable distance between the RFID tag installed on the aluminum foil, the width Wm of the aluminum foil and the RFID tag. FIG. 6 is a partial cross-sectional view showing a schematic configuration of a package constituting the RFID tag system according to the second embodiment of the present invention, and FIG. 7 is a main cross-sectional view showing the result of measurement by changing the ratio with the antenna width Wa. FIG. 8 is a partial cross-sectional view showing a schematic configuration of a package constituting an RFID tag system according to a third embodiment of the invention, and FIG. 8 shows a current component flowing on an inlet when an electromagnetic wave is received in an ideal state. Is a graph showing the I. In the present application, a combination of an RFID chip, an antenna connected to the RFID chip, and a base material on which the RFID chip and the antenna are integrally mounted is called an inlet. A product provided with a utility such as an adhesive is referred to as an RFID tag, and a minimum unit product (for example, a wallet package) to which the RFID tag is attached is referred to as an RFID system.

  The wallet type package that is the subject of the present invention is one in which a front cover / spine / back cover and a metal material are laminated and coated with aluminum foil on the front cover / spine / back cover. In the embodiments to be described later, for the purpose of making it easier to understand the situation specifically, there are places where the state of the metal material placed on the front cover / back cover / back cover is described as “coated with aluminum foil”. However, this description does not limit the metal material in the claims of the present application to aluminum. Further, the shape of the metal material in the claims of the present application is not limited to the foil, and the installation method of the metal material is not limited to the coat.

<First Embodiment>
As shown in FIGS. 1 and 2, the RFID tag system for a wallet type package according to an embodiment of the present invention stores tablets or capsules in a convex resin sheet and stores the back side coated with aluminum foil. A PTP package 103 including a medicine storage unit 104, a wallet shape for storing the PTP package 103, that is, a wallet package 102 including a back cover 201, a back cover 202, and a cover 203, and a back cover of the package 102 It is comprised from the RFID tag 101 installed in the part.

  As shown in FIG. 2, the wallet-type package 102 has a PTP sheet coated with aluminum foil on each inner surface of the back cover 201 / back cover 202 / cover 203, and the RFID tag 101 has As shown in FIG. 3, a long RFID tag antenna portion 302 and a rectangular RFID chip 301 are mounted on a long linear RFID tag base material (polyimide or the like) 303.

  In the RFID tag system according to the present embodiment, the RFID tag 101 is arranged on the spine 202 of the wallet type package 102. As shown in FIG. 4, an antenna unit having a width Wa on an aluminum foil 401 having a width Wm. The RFID tag having 302 is attached along the longitudinal direction, and the width Wm is 1.5 to 1 times the width Wa of the antenna portion of the RFID tag 101 ("1" means the same width) To be). In other words, the width Wa in the short direction of the antenna unit 302 is 2/3 to 1 times the width Wm of the aluminum foil 401 ("1 times the upper limit value" means the same width). It is set.

  Here, it is generally known that when an RFID tag is installed on a metal material, the sensitivity of the RFID tag is lowered due to the influence of the metal material, and the maximum communicable distance of the RFID tag is shortened. Discovered that even when an RFID tag is installed on a metal material, the degree of influence of the metal material varies depending on the ratio of the width of the metal material and the RFID antenna.

  To explain this, the inventors used a 0.5 mm thick aluminum thin plate as a metal material, and the ratio of the width Wm of the aluminum thin plate to the width Wa of the antenna portion of the RFID tag (Rw = Wm / Wa) [ The horizontal axis] was changed (the longitudinal dimension was not changed), and the maximum communicable distance [vertical axis] was measured. As a result, as shown in FIG. 5, when the width ratio Rw is zero (the state where no aluminum thin plate is present), the maximum communicable distance becomes the largest, and gradually decreases as the width ratio Rw increases, and the width ratio Rw≈1. It was found that the sensitivity decreased sharply with a further increase in the width ratio Rw after the sensitivity decreased by about 20% at 5. In other words, it has been found that a sudden decrease in sensitivity can be avoided by setting the width ratio Rw ≦ 1.5.

  As a result of studying an RFID tag system in which an RFID tag is provided in a wallet package that is a subject of the present invention based on the above experimental results, the inventors have found that the width Wa of the antenna portion is as shown in FIG. On the other hand, by designing the width Wm of the back cover 202 of the wallet package to be about 1.5 times, it is possible to avoid a sudden decrease in the maximum communication distance even on aluminum foil (metal material). The present invention has been made so as not to hinder tag communication.

  Note that the communication device used in the above-described experiment used an RFID reader / writer device MS6502RWEA (rated output 300 mW) manufactured by Hitachi Ultra LSI Systems Co., Ltd. and a 4-patch antenna dedicated to the device (circular polarization, gain 14 dBi). In addition, the communication protocol in this experiment was based on ISO 18000-4 draft version and measured at a transfer rate of 40 kbps.

The above-described experiment shown in FIG. 5 was carried out in order to verify the change in the maximum communicable distance with respect to the ratio of the width Wa of the antenna portion and the spine portion width Wm of the wallet package. The inventors of the present application discovered that the metal material existing along the longitudinal direction of the antenna with respect to the antenna on the RFID tag system side mainly affects the reception sensitivity because the verification experiment of both widths was performed. It is based on. The reason for this will be described next.
First, the current distribution I flowing on the inlet when receiving an electromagnetic wave in an ideal state is such that the horizontal axis indicates the position in the longitudinal direction of the inlet, the vertical axis indicates the current value I, and the position in the X direction indicated by the coordinate axis 801. As shown in FIG. 8, the maximum value is obtained at the position of the RFID chip 301 (point C on the graph). In this state, the inlet can receive with the maximum sensitivity. This state is called a resonance state.

In order for the RFID tag to communicate with maximum sensitivity, it is important to maintain a resonance state, and for this purpose, the current distribution in the X direction on the inlet must be maintained. As shown in the figure, when the metal material 802 is arranged at a position parallel to the inlet (a position in the X direction in the figure), the metal material exists along the antenna. There is a characteristic that the current distribution is continuously influenced and the sensitivity is greatly reduced by integrating the influence. On the other hand, when the metal material 803 is arranged on the extension line of the inlet (Y direction in the figure), the distance between the metal material and the antenna becomes large, so that the current distribution on the inlet antenna important for the resonance state is continuous. It has been found that there is a characteristic that does not affect the sensitivity and does not greatly reduce the sensitivity.
Therefore, the inventors pay attention to the size (width in the Y direction) of the metal material 802 arranged in the Y direction in the figure, and verify how much the influence of the arranged metal material changes depending on the width. Therefore, the experiment described with reference to FIG. 5 is performed.

  As described above, the RFID tag system for the wallet type package according to the first embodiment of the present invention has a width ratio (Rw = Wm / Wa) of the width Wm of the metal material to the width Wa of the antenna part of the spine portion of the wallet type package. ) Is 1.5 or less (the lower limit is, for example, “1” in which both widths are the same), the RFID tag can satisfactorily communicate with the antenna (not shown) of the RFID reader / writer.

<Second Embodiment>
In the first embodiment, the example in which the RFID tag is disposed on the spine portion of the wallet package has been described. However, the present invention is not limited to this, and the RFID tag is disposed in another portion of the wallet package. Other embodiments will be described next.

  As shown in FIG. 6, the RFID tag system for a wallet type package according to the second embodiment stores a tablet or capsule in a convex resin and coats and stores the back surface with an aluminum foil. And a first flip surface 601 made of a non-conductive material that continuously extends from the back cover 201 / back cover 202 / cover 203 and the cover 203 to close the other surface of the package. And the RFID tag 101 installed on the first flip surface 601 of the package 102. The flip surface refers to a paper sheet provided in addition to the paper sheets of the back cover 201 / spine cover 202 / cover 203, but is not limited to paper.

In the RFID tag system for a wallet type package according to the present embodiment, a first flip surface 601 made of a non-conductive material such as paper is added to a wallet type package that basically includes three surfaces, and the first flip surface 601 is added to the first flip surface 601. The RFID tag 101 was mounted along the longitudinal direction. As a result, the RFID tag 101 can satisfactorily communicate with the antenna (not shown) of the RFID reader / writer without being affected by the aluminum foil on the back surface. The aluminum foil coated on the front cover 203 and the back cover 201 exists in the vicinity of the RFID tag 101 mounted on the first flip surface 601. The influence of the aluminum foil on the RFID tag is the plane formed by the antenna. Since the influence from the aluminum foil having a surface along a parallel plane is extremely small, it is configured so that good sensitivity can be maintained.
<Third Embodiment>

  In addition, as shown in FIG. 7, the RFID tag system for a wallet-type package according to another embodiment of the present invention stores tablets or capsules in a storage part in which a resin sheet is formed in a convex shape, and the back surface is coated with aluminum foil. A package 102 having a PTP package 103 including a medicine storage unit 104 to be stored, a back cover 201 / back cover 202 / cover 203 / first flip surface 205 / second flip surface 701, and the cover 203 of the package 102 An RFID tag 702 installed on the top and an RFID tag 101 mounted on the spine 202 are configured. The back cover 202 / back cover 201 / first flip surface 205 / second flip surface 701 are coated with an aluminum foil, and the cover 203 is composed of only a non-conductive material (for example, paper).

  The RFID tag 101 mounted on the spine 202 is affixed with an RFID tag having an antenna portion 302 having a width Wa on an aluminum foil 401 having a width Wm, as in the spine of the first embodiment shown in FIG. The width Wm is set to be 1 to 1.5 times the width Wa of the antenna portion of the RFID tag 101.

  The RFID tag system for the wallet type package according to the present embodiment has the RFID tag 702 mounted on the non-conductive cover 203 of the wallet type package, and the first flip surface 205 and the second flip surface 701 coated with aluminum foil. And the second flip surface 701 is configured to overlap the cover sheet 203. This RFID tag system for a wallet type package has moisture resistance by covering the periphery of the PTP package 103 with a back cover 202 / back cover 201 / first flip surface 205 / second flip surface 701 coated with aluminum foil. Secured.

This RFID tag system for a wallet type package can perform stable communication using the RFID tag 702 when the second flip surface 701 is opened, and the RFID tag 702 when the second flip surface 701 is closed. The aluminum foil of the second flip surface 701 covers the top so that communication cannot be performed. That is, the RFID tag system according to the present embodiment can control the operation of the RFID tag by opening and closing the second flip surface 701. Further, the RFID tag 101 can always communicate with the outside as in the embodiment shown in FIG. As a result, data that can be always traced, such as manufacturing data and distribution data, can be easily read from the RFID 101, and data that needs to be protected is written to the RFID tag 702, depending on the application and the nature of the information. Can be used properly.
In the RFID tag system according to the present embodiment, the cover 203 is coated with an aluminum foil, the second flip surface 701 is formed of a nonconductive material, and the RFID tag 701 is mounted on the second flip surface 701 side. It may be configured. In addition, the PTP package described above may be formed by forming a convex storage portion on a single resin sheet and sealing the storage portion with an aluminum foil.

  In each of the above-described embodiments, the PTP package 103 including the medicine storage unit 104 that stores tablets or capsules in a convex resin sheet and stores the back side coated with aluminum foil has been described as an example. In addition, the present invention can also be applied to a PTP package in which the convex resin portion is coated with an aluminum foil.

  As described above, in the RFID tag system according to the present invention, stable communication and reliable control can be performed for a package containing a package including an aluminum foil (metal material) while ensuring moisture resistance.

  In the above-described embodiment, a wallet-type package for packing tablets, capsules, etc., which are medicines, has been described as an example. However, the RFID tag system according to the present invention is not limited to medicines, but a PTP package and a wallet type. The present invention can also be widely applied to other packages in combination with these packages, for example, foods such as confectionery. Further, the present invention is not limited to the PTP package, and can be applied to all package products packaged with a package material including a metal material such as an aluminum foil.

The figure which shows schematic structure of the package which comprises the RFID tag system by the 1st Embodiment of this invention. FIG. 2 is a partial cross-sectional view of the package according to the embodiment shown in FIG. 1. The front view which shows the structure of a RFID tag. The front view which shows the RFID tag installed on the aluminum foil. The graph which shows the result of having measured the maximum communicable distance with the RFID tag installed on the aluminum foil by changing the ratio of the width Wm of the aluminum foil and the antenna width Wa of the RFID tag. The fragmentary sectional view which shows schematic structure of the package which comprises the RFID tag system by the 2nd Embodiment of this invention. The fragmentary sectional view which shows schematic structure of the package which comprises the RFID tag system by the 3rd Embodiment of this invention. The graph which shows the electric current distribution I which flows on an inlet when electromagnetic waves are received in an ideal state.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 101: RFID tag, 102: Wallet type package, 103: PTP package, 104: Drug storage part, 201 thru | or 203: Surface, 301: RFID chip, 302: Tag antenna part, 303: RFID tag base material, 401: Aluminum Foil, 601: first flip surface, 205: first flip surface, 701: second flip surface, 702: RFID tag 702, 801: coordinate axis, 802: metal material, 803: metal material.

Claims (4)

A single resin or a laminate of resin and metal material, and a PTP package including a storage unit for storing an object, and a wallet including a front cover, a back cover, and a back cover for storing the PTP package. An RFID tag system comprising a wallet type package in which a metal material is installed along at least the back cover, and an RFID tag including a long antenna,
An RFID tag is provided along the longitudinal direction of the spine of the wallet package, and the width Wm of the spine of the wallet package to which the RFID tag is attached is set to 1 to 1.5 times the width Wa of the antenna. RFID tag system characterized by setting. A wallet-type package having a wallet shape including a cover, a back cover, and a back cover for storing the PTP package; An RFID tag system comprising an RFID tag including a scale-shaped antenna,
The RFID tag is provided along a longitudinal direction of the first flip surface by providing a first flip surface made of a non-conductive material that is continuous with a front cover or a back cover of the wallet-type package to close the other surface of the package. RFID tag system characterized by having attached. A wallet-type package having a wallet shape including a cover, a back cover, and a back cover for storing the PTP package; An RFID tag system comprising an RFID tag including a scale-shaped antenna,
A first flip surface for closing the other surface of the package continuously with the back cover of the wallet-type package; and a second flip surface with a metal material for covering the cover continuously with the first flip surface; And an RFID tag system, wherein a first RFID tag is provided on a cover facing the second flip surface.   A metal material is set on the back cover, and a second RFID tag is provided on the metal material of the back cover, and the width Wm of the spine is set to 1 to 1.5 times the width Wa of the antenna. The RFID tag system according to claim 3, wherein

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