JP5179971B2 - Sheet-like material and manufacturing method thereof - Google Patents

Description

  The present invention relates to a sheet-like material having at least a metal layer and a method for producing the same.

  Conventionally, RFID (Radio Frequency Identification) technology for exchanging information by short-range wireless communication using radio waves, magnetic flux (magnetic field), etc. is known, and an IC tag (RFID tag) is attached to a product. Yes. For example, by recording product information such as the manufacturing factory, manufacturing date, identification number assigned to each product in the IC tag, the IC tag communicates with the tag reader, and the information is read or written, Product distribution management, inventory management, etc. can be performed. As a communication method between the IC tag and the tag reader, for example, an electromagnetic induction method in which a signal is transmitted by magnetically coupling the antenna of the IC tag and the antenna of the tag reader, and radio waves are exchanged between the antenna of the IC tag and the antenna of the tag reader. Radio wave systems that transmit signals are known.

  Patent Document 1 discloses a wireless IC tag attached to a packaging bag formed of a laminated film. As shown in FIG. 9, the package of Patent Document 1 is an inner bag formed of a laminated film including a metal layer such as aluminum inside a square box-shaped outer box 51 formed of a material not including a metal material. 52 is accommodated. A wireless IC tag 53 is attached to the outer surface of the outer box 51. An interval holding member 54 is inserted between the surface of the outer box 51 where the wireless IC tag 53 is attached and the inner bag 52. The spacing member 54 is made of a non-metallic material such as cardboard or foamed plastic, and has a thickness of 10 mm or more. Due to the presence of the spacing member 54, the wireless IC tag 53 and the metal layer of the inner bag 52 are separated by 10 mm or more.

When communicating by the electromagnetic induction method, the antenna of the wireless IC tag 53 is electromagnetically induced by the magnetic flux generated from the antenna of the tag reader. Therefore, the magnetic flux must be able to pass around the antenna of the wireless IC tag 53. In the package of Patent Document 1, since the wireless IC tag 53 and the inner bag 52 are separated by 10 mm or more, the magnetic flux passing around the wireless IC tag 53 is suppressed from being blocked by the metal layer, and the electromagnetic induction method is used. Good communication is realized.
JP 2006-056602 A

  For example, a hologram sheet that has been subjected to hologram processing to improve design and security, and a metal layer has adhered to each of the sheet side and the main body side separated after peeling, so that it has been peeled (opened) Security seals that can determine whether or not there is known. In such a sheet-like material, a metal layer is included as a partial layer. In this case, if the wireless IC tag is attached directly to the sheet-like material, the magnetic flux is blocked by the metal layer of the sheet-like material, and the IC tag cannot be electromagnetically induced, and there is a possibility that communication using the electromagnetic induction method cannot be performed. is there.

  Here, in the package of Patent Document 1, the outer box 51 to which the wireless IC tag 53 is attached is essential in addition to the inner bag 52. Furthermore, a spacing member 54 must be inserted between the outer box 51 and the inner bag 52. Therefore, in the package of Patent Document 1, in order for the wireless IC tag 53 to function, the thickness of the package must be increased (10 mm or more). If such a configuration is applied as a configuration for attaching a wireless IC tag to a sheet-like material such as a hologram sheet or a security seal, the thickness of the sheet-like material becomes excessively large. In addition, if the outer box 51 and the spacing member 54 are necessary, the material cost increases and the manufacturing method becomes complicated, and an increase in the manufacturing cost of the sheet-like material is inevitable. Therefore, it is practically impossible to apply the configuration of the package of Patent Document 1 to a sheet-like material.

  Even if the spacing member 54 is interposed as in the package of Patent Document 1, radio waves and magnetic flux emitted from the IC tag are absorbed by the metal layer and attenuated. Therefore, radio waves and magnetic flux do not reach the side where the IC tag is attached and the opposite side across the metal layer. Therefore, even if communication is attempted from the side opposite to the side where the IC tag is attached using a tag reader, the sensitivity may be significantly reduced or communication may not be possible.

  The present invention has been made in view of the above-described problems of the prior art, and the thickness of the sheet-like material is excessively large while the sheet body having at least the metal layer includes the IC portion for wireless communication. An object of the present invention is to provide a sheet-like material that is minimized and prevents the communication state from deteriorating. Moreover, it aims at providing the manufacturing method which can manufacture such a sheet-like material simply.

In order to achieve the above object, the invention according to claim 1 is a sheet body having at least a metal layer, and an IC chip and an antenna unit for wireless communication on a bonding surface side of a seal member formed of a nonmetallic material. A sheet-like object provided with an IC part, wherein the sheet body allows transmission of radio waves and magnetic flux to the metal layer in the thickness direction of the metal layer and the surface direction of the metal layer. The sealing member is formed such that a transmission part that allows transmission of radio waves and magnetic flux to the metal layer is formed, and at least a part of the antenna part is located in the transmission part and the transmission part is covered with the sealing member. Is attached to the surface of the sheet body so as to sandwich the sheet body from both sides .

According to this configuration, the transmission part formed in the sheet body supports communication between the IC part and the IC reader in the thickness direction and the surface direction of the metal layer, so that optimization of the communication is realized, Multi-directional communication is realized. In addition, since the configuration such as the outer box and the spacing member as described in Patent Document 1 is not essential, the thickness of the sheet is suppressed from being excessively increased, and the configuration of the sheet is simplified. Is possible.
Moreover, since the transmissive part is covered with the seal member, it is possible to suppress the strength of the sheet body from being lowered or the appearance from being deteriorated by forming the transmissive part. Moreover, since the seal member is formed of a non-metallic material, it is possible to suppress the radio wave and the magnetic flux from being disturbed and maintain good communication.

  According to a second aspect of the present invention, in the sheet-like material according to the first aspect of the present invention, the transmissive portion is formed by cutting a metal layer. According to this configuration, since the metal layer is cut and the transmission portion is formed, it is possible to suppress the passage of radio waves and magnetic flux by the metal layer.

In order to achieve the above object, the invention according to claim 3 includes a sheet body having at least a metal layer, and an antenna portion and an IC chip for wireless communication on the bonding surface side of a seal member formed of a non-metallic material. A sheet-like product including an IC part provided with a metal layer, wherein the sheet body is allowed to transmit radio waves and magnetic fluxes to the metal layer in a thickness direction of the metal layer, and the metal layer Forming a transmission part that allows transmission of radio waves and magnetic flux to the metal layer in the surface direction of the antenna, and at least a part of the antenna part is located in the transmission part and the transmission part is covered by the seal member As described above, the method includes a step of attaching the seal member to the surface of the sheet body while sandwiching the sheet body from both sides with the seal member.

  According to this configuration, communication between the IC unit and the IC reader in the thickness direction and the surface direction of the metal layer is supported by performing the process of attaching the IC unit to the sheet body. In addition, since a sheet-like product with an IC can be manufactured through a process of attaching the IC portion to the sheet body, the manufacturing method of the sheet-like product is strongly changed from the conventional manufacturing method. It will never be done.

  Although the sheet-like material of the present invention is provided with an IC portion in a sheet body having a metal layer, it is possible to minimize the increase in the thickness of the sheet-like material and the deterioration of the communication state. it can. Moreover, according to the manufacturing method of the sheet-like thing of this invention, such a sheet-like thing can be manufactured comparatively simply.

  Hereinafter, the embodiment regarding the sheet-like material of this invention is described according to FIGS. As shown in FIGS. 1 and 3, the sheet-like material of the present embodiment includes a sheet body 10 provided with a metal layer on one surface of the base material layer, and an IC unit 20 that performs wireless communication. ing.

  As shown in FIGS. 1 and 3, the sheet body 10 is formed in a long rectangular shape, and a through hole 11 is formed on one short side edge (the left short side edge in FIG. 1). A string body (not shown) is passed through the through-hole 11, and the sheet body 10 is attached to the product via the string body. On the other short side edge (the right short side edge in FIG. 1) of the sheet body 10, a cutout portion 12 is formed as a transmission portion formed by cutting out the entire sheet body 10 having a metal layer.

  The cut portion 12 has a substantially circular shape from the other short side edge (the right short side edge in FIG. 1) to the center side in the long side direction of the sheet body 10 so as to have the short edge opening 12a. Notched in shape. With such a configuration, the cut portion 12 is opened from the center in both directions in the thickness direction of the sheet body 10 (metal layer) (X direction and Y direction in FIG. 1), and the sheet body 10 (metal layer from the center). ) In one direction (Z direction in FIG. 1). In the present embodiment, one direction of the surface direction is the same as the long side direction of the sheet body 10.

  As shown in FIG. 2, the IC section 20 is formed by bonding a circular IC body 22 to a seal member 21 formed of a non-metallic material. The seal member 21 has a pair of disk parts 21a and a connecting part 21b that connects the disk parts 21a. When the connecting part 21b is folded in two, the disk parts 21a overlap each other so that the cut part 12 is overlapped. It is formed to have a similar shape.

  As shown in FIG. 4, the disc part 21a is formed in a substantially circular shape, and the diameter R1 thereof is set to be larger than the maximum width (diameter) R2 of the cut part 12 in the short side direction. ing. The connecting portion 21b is formed in a substantially rectangular shape, and the width W1 in the direction orthogonal to the connecting direction of the pair of disc portions 21a is the width of the short side edge opening 12a of the cutout portion 12 in the short side direction of the sheet body 10. It is set larger than the width W2. In FIG. 4, the cut portion 12 is indicated by a dotted line.

  As shown in FIG. 2, a circular IC body 22 is provided on the bonding surface of the seal member 21. The IC main body 22 includes a circular circular sheet 23, and the diameter R <b> 3 is set smaller than the maximum width R <b> 2 of the cut portion 12. An IC chip 24 for storing and calculating information is attached to the center of the surface of the circular sheet 23, and an antenna unit 25 for wireless communication extends from the IC chip 24. The antenna portion 25 extends outward from the central IC chip 24 of the circular sheet 23 and is drawn in a substantially circular shape along the outer periphery of the circular sheet 23.

  As shown in FIG. 1, the IC part 20 is folded in two at a connecting part 21 b and attached so as to cover the cut part 12 with the sheet body 10 sandwiched from both sides. Further, the entire area of the IC main body 22 of the IC section 20 is located in the cutout section 12 of the sheet body 10.

  Next, a method for manufacturing the above sheet-like material, particularly a method for attaching the IC portion 20 to the sheet body 10 will be described. In the present embodiment, the sheet-like material is manufactured through a process of forming the cut body 12 by forming the sheet body 10 and a process of attaching the IC part 20.

  In the step of forming the sheet body 10, first, aluminum is vapor-deposited on one surface of the synthetic resin sheet to be the base material layer to form a metal layer. Then, the sheet body 10 is obtained by cutting into a long rectangular shape, and the through hole 11 and the cut portion 12 are formed by punching out the base material layer and the metal layer of the sheet body 10.

  Next, a process of attaching the IC unit 20 to the sheet body 10 is performed. In this step, transmission of radio waves and magnetic flux to the metal layer is allowed in the thickness direction of the metal layer (sheet body 10), and transmission of radio waves and magnetic flux to the metal layer in the surface direction of the metal layer (sheet body 10) is allowed. The IC unit 20 is attached to the sheet body 10 as allowed. Specifically, as shown in FIG. 3, the IC portion 20 is arranged so that the center of the circular cut portion 12 and the center of the circular sheet 23 of the IC body 22 coincide. And the other short side edge (cutting part 12) of the sheet | seat body 10 is inserted | pinched, folding the sealing member 21 into two so that the surface in which the IC main body 22 of the sealing member 21 is provided may be inside (valley side). Thus, the seal member 21 is attached. At this time, the diameter R1 of the disc portion 21a of the seal member 21 is set to be larger than the maximum width R2 of the cut portion 12, and the width W1 of the connecting portion 21b is larger than the width W2 of the short edge opening 12a of the cut portion 12. Therefore, the entire region of the cut portion 12 is covered with the seal member 21. Further, since the diameter R3 of the circular sheet 23 is set to be smaller than the maximum width R2 of the cut portion 12, the IC main body 22 (antenna portion 25) can contact the cut portion 12 without contacting the entire area of the sheet body 10. Will be located.

Next, the usage aspect of said sheet-like material is described.
In the sheet-like material of the present embodiment, the IC unit 20 and an IC reader (not shown) perform wireless communication by an electromagnetic induction method or a radio wave method. The method of driving the IC main body 22 of the IC unit 20 differs between the electromagnetic induction method and the radio wave method.

  In the case of communication using an electromagnetic induction method, the IC body 22 of the IC unit 20 is driven by magnetic flux (magnetic field) generated from the IC reader. In the cut portion 12 of the sheet body 10, the metal layer is also cut by cutting the sheet body 10, and the magnetic flux in the thickness direction (X direction and Y direction in FIG. 1) of the metal layer (sheet body 10). Passage is allowed. Further, in the short edge opening 12a of the cut portion 12, passage of magnetic flux in one direction (Z direction in FIG. 1) is allowed among the surface directions of the metal layer (sheet body 10). Therefore, in the vicinity of the short edge opening 12a of the cut portion 12 in the antenna portion 25 of the IC body 22, the magnetic flux generated from the IC reader can pass so as to surround the antenna portion 25 of the IC body 22. . Then, the magnetic flux emitted from the IC reader and surrounding the antenna unit 25 of the IC unit 20 changes, so that a current flows through the antenna unit 25 by electromagnetic induction.

  On the other hand, in the case of communication using the radio wave system, the IC main body 22 of the IC unit 20 is driven by radio waves emitted from the IC reader. In the present embodiment, passage of magnetic flux in the thickness direction (X direction and Y direction in FIG. 1) of the metal layer (sheet body 10) is allowed in the cut portion 12 of the sheet body 10. Therefore, the radio wave from the IC reader can be applied to the antenna unit 25 of the IC body 22 from either side (from the X direction or the Y direction in FIG. 1) in the thickness direction of the metal layer of the sheet body 10. Since the IC reader emits a radio wave having a frequency corresponding to the resonance frequency of the antenna unit 25 of the IC body 22, the antenna unit 25 irradiated with the radio wave resonates and a current flows. In this embodiment, since the diameter R3 of the circular sheet 23 is set to be smaller than the maximum width R2 of the cut portion 12 and their centers coincide with each other, the entire antenna portion 25 is the metal layer of the sheet body 10. Not in contact with. Therefore, the resonance frequency of the antenna unit 25 is not shifted due to the metal layer of the sheet body 10.

  When a current flows through the antenna unit 25, the IC chip 24 is driven by the current and information stored in the IC chip 24 is emitted from the antenna unit 25 as a radio wave. In the present embodiment, since the entire IC main body 22 is located in the cut portion 12, the radio wave emitted from the antenna portion 25 is not blocked by the metal layer of the sheet body 10, and in both directions in the thickness direction of the metal layer (see FIG. 1 in the X direction and the Y direction). The IC reader can receive radio waves emitted from the antenna unit 25 regardless of the position of the IC reader with respect to the sheet body 10.

According to said embodiment, the following effects can be acquired.
(1) In the said embodiment, the cutting part 12 by which the metal layer of this sheet | seat body 10 was excised by the sheet | seat body 10 being excised is formed. Since the cut portion 12 supports communication between the IC unit 20 and the IC reader in the thickness direction and the surface direction of the metal layer (sheet body 10), the communication is optimized and the communication is performed in a large amount. Direction is realized. In addition, since the configuration of the outer box, the interval holding member, or the like is not essential for the IC unit 20 to function, the thickness of the sheet-like material is suppressed from being excessively increased, and the configuration of the sheet-like material is simplified. be able to.

  (2) In the above embodiment, the entire region of the cut portion 12 is covered with the seal member 21. Therefore, it can suppress that the intensity | strength of the sheet | seat body 10 falls or appearance worsens by forming the cutting part 12. FIG. Moreover, since the sealing member 21 is formed of a non-metallic material, it is possible to suppress the magnetic flux and radio waves from being disturbed and maintain good communication.

  (3) In the above embodiment, the entire area of the antenna portion 25 of the IC body 22 is located in the cut portion 12 without contacting the sheet body 10. Therefore, radio waves and magnetic fluxes can be transmitted in the thickness direction (X direction and Y direction in FIG. 1) of the metal layer (sheet body 10) in the entire area of the antenna unit 25, and good communication can be performed. In addition, in the above embodiment, since the antenna unit 25 is not in contact with the metal layer of the sheet body 10, the resonance frequency of the antenna unit 25 is unlikely to change. Therefore, radio waves emitted from the IC reader can be received with higher sensitivity, and good communication by the radio wave system is possible.

  (4) In the above-described embodiment, the cut portion 12 has the short edge opening 12a, and transmits radio waves and magnetic flux in one direction (Z direction in FIG. 1) of the surface direction of the metal layer (sheet body 10). Is possible. Therefore, the magnetic flux can be transmitted so as to surround the antenna portion 25 of the IC body 22, and good communication by the electromagnetic induction method is possible.

  (5) In the above embodiment, since the sealing member 21 is folded in two and attached to the sheet body 10 so that the surface on which the IC main body 22 is provided is the inner side (valley side), the IC main body 22 is also a sealing member. 21 will be covered. Therefore, the IC chip 24 and the antenna unit 25 of the IC body 22 are prevented from being damaged and broken.

  (6) In the said embodiment, the sheet-like thing with the IC main body 22 can be manufactured by passing through the process which forms the cutting part 12 with respect to the sheet | seat body 10, and attaches the IC part 20. FIG. Therefore, the manufacturing method of the sheet-like product is not forced to change significantly from the conventional manufacturing method.

The above-described embodiment may be modified as follows, and the following modified examples may be implemented in combination with each other.
-In above-mentioned embodiment, although the cut part 12 was formed in the substantially circular shape, the shape of the cut part 12 is not restricted to this. For example, the cut portion 12 having a polygonal shape such as a square shape or a triangular shape may be formed so as to have the short edge opening 12a. At this time, if the sealing member 21 of the IC portion 20 is formed to have a pair of polygonal plate portions and a connecting portion for connecting the polygonal plate portions, the entire area of the polygonal cutout portion 12 is covered with the sealing member 21. Can be covered.

  In the above embodiment, the cut portion 12 is formed so as to have the short edge opening 12a. Instead of this configuration, for example, the cut portion 12 may be formed to have a long edge opening. At this time, one direction of the surface direction of the metal layer (sheet body 10) is the same as the short side direction of the sheet body 10. Thus, the one direction of the surface direction may be the long side direction, the short side direction, or any other direction of the sheet body 10.

  -In above-mentioned embodiment, although the cutting part 12 is open | released by one direction among the surface directions of a metal layer (sheet | seat body 10), you may make it open | release in multiple directions of two directions or three directions or more. . In the case of opening in two directions, the directions may be directed in opposite directions so that the directions form a straight line, or not.

  In the above embodiment, the entire area of the IC main body 22 is located in the excision part 12, but the relationship between the IC main body 22 and the excision part 12 is not limited thereto. For example, the maximum width (diameter) R2 of the cut portion 12 and the width W2 of the connecting portion 21b are set smaller than the diameter R3 of the circular sheet 23 of the IC body 22, and a part of the antenna portion 25 of the IC body 22 is cut away. 12 and the other part may be located in the metal layer. Specifically, as shown in FIG. 5A, a slit-shaped cut portion 41 a extending in the long side direction of the sheet body 10 from the short side edge of the sheet body 10 may be formed. Further, as shown in FIG. 5B, a slit-shaped cut portion 41 b extending from the long side edge of the sheet body 10 in the short side direction of the sheet body 10 may be formed. Further, as shown in FIG. 5C, an inverted L-shaped cut portion 41 c extending from the upper edge in the short side direction of the sheet body 10 and further extending in the long side direction may be formed. When these slit-shaped cut portions 41a to 41c are employed, the IC body 22 may be attached to the sheet body 10 so that a part of the antenna portion 25 of the IC body 22 is located in the cut portions 41a to 41c. 5A to 5C, the attachment position of the IC body 22 is indicated by a dotted line.

  In the slit-shaped cut portions 41a to 41c, the widths do not have to be equal. For example, the width may be gradually increased or decreased, or the cut portions 41a to 41c may be configured by changing the width to increase or decrease the width. Good.

  As shown in FIG. 6 (a), a corner portion of the sheet body 10 is cut away to form a cut portion 42, and the IC body 22 is placed on the sheet body 10 so that a part of the IC body 22 protrudes from the cut portion 42. You may attach to. Alternatively, as shown in FIG. 6B, the IC body 22 may be attached so that a part of the sheet body 10 protrudes outward from the short edge. 6A and 6B, the attachment position of the IC body 22 is indicated by a dotted line.

  The sheet body 10 may be divided into a left part 44a and a right part 44b, and a gap between the left part 44a and the right part 44b may be used as the cut part 43. Specifically, as shown in FIG. 7, a seal member 45 having a disk portion 45a and a connecting portion 45b extending in both directions is formed. Then, the seal member 45 connects the left portion 44a and the right portion 44b so as to ensure a predetermined width. The gap between the left part 44 a and the right part 44 b becomes the cut part 43. In FIG. 7, the seal member 45 and the IC body 22 are indicated by dotted lines.

  In the above embodiment, the center of the circular cut portion 12 and the center of the circular sheet 23 of the IC main body 22 coincide with each other. If it does not contact the metal layer of the body 10, the same effect as that of the above embodiment can be obtained. In addition, if a part of the antenna unit 25 is located at the cutout part 12 regardless of the positional relationship between the center of the cutout part 12 and the center of the circular sheet 23, the antenna part 25 is a metal layer of the sheet body 10. May be in contact with.

  As described above, the configuration of the cut portion 12 and the mounting position of the IC body 22 can be freely changed in consideration of the shape, application, design, and communication method of the IC body 22.

  In the above embodiment, the entire area of the cut portion 12 is covered by the seal member 21, but the entire area may not be covered. For example, the diameter R1 of the disc portion 21a of the seal member 21 may be set smaller than the maximum width R2 of the cut portion 12, or the width W1 of the connecting portion 21b may be set smaller than the width W2 of the short edge opening 12a. Also good. However, in the above-described embodiment, the IC body 22 is not in contact with the sheet body 10, and the IC body 22 is indirectly attached to the sheet body 10 via the seal member 21. You must secure the part to be bonded.

  -In above-mentioned embodiment, although the sealing member 21 had a pair of disc part 21a and the connection part 21b, the structure of the sealing member 21 is not restricted to this. For example, the seal member 21 may be formed in an elliptical shape or a rectangular shape, and may be folded in half at the center in the longitudinal direction. Or the connection part 21b is not formed, but you may make it pinch | interpose the cutting part 12 with a pair of disc part 21a which is not mutually connected.

  In the above embodiment, the seal member 21 of the IC unit 20 can be omitted. For example, as shown in FIGS. 5A to 5C, FIGS. 6A, 6 </ b> B, and 7, when a part of the IC body 22 is located in the cut portion, the circular shape of the IC body 22 is used. The sheet 23 is in contact with the sheet body 10. Therefore, if one surface of the circular sheet 23 is an adhesive surface, the IC body 22 can be bonded to the sheet body 10. In particular, when the surface of the circular sheet 23 on which the IC chip 24 and the antenna unit 25 are formed is an adhesive surface, the antenna unit 25 of the IC body 22 comes into contact with the metal layer of the sheet body 10. Then, since the antenna unit 25 and the metal layer of the sheet body 10 cooperate with each other and play a role as an antenna, it is easily affected by magnetic flux. Therefore, it is suitable when the electromagnetic induction type communication method is adopted. Further, the circular sheet 23 can be omitted, and in this case, the IC main body 22 is directly attached to the seal member 21.

  -In above-mentioned embodiment, although the cut | disconnected part 12 as a permeation | transmission part was formed by excising the sheet | seat body 10, the structure of a permeation | transmission part is not restricted to this. For example, when the metal layer of the sheet body 10 is formed by vapor deposition, a part of the surface of the sheet body 10 is masked to deposit the metal layer, and then the masking is removed to remove the metal layer. A region may be formed, and this non-deposition region may be used as a transmission part. Further, when a metal layer is formed by bonding a metal sheet to the base material layer of the sheet body 10, after cutting a part of the metal sheet in advance, the metal sheet is bonded to the base material layer and the metal layer is cut off. Alternatively, a metal layer excision part may be formed, and the metal layer excision part may be used as a transmission part.

    In the case where the non-deposition area and the metal layer excision are used as the transmission part, the IC chip 24 and the antenna part are formed on the base material layer of the sheet body 10 instead of the configuration in which the IC chip 24 and the antenna part 25 are formed on the circular sheet 23. 25 may be formed directly. For example, the IC main body 22 can be formed by attaching the IC chip 24 to the base material layer of the sheet body 10 and printing the antenna portion 25 in the non-deposition region and the metal layer cutting portion. In this configuration, the IC body 22 is formed in the same layer as the metal layer.

  -The shape of the sheet | seat body 10 is not restricted to the thing of the said embodiment. For example, the sheet body 10 may be formed in a circular shape, or may be formed in a polygonal shape other than a quadrangle such as a triangle or a pentagon. A plurality of through holes 11 may be formed, or the through holes 11 may be omitted.

  Specifically, the sheet-like object (sheet body 10) in the above embodiment is assumed to be a brand name tag, a brand name tag, a brand name plate, for example. In addition to such tags and plates, the sheet body 10 may be formed as a tablet or capsule packaging sheet. For example, in the sheet-like material shown in FIG. 8, the substantially square plate-like sheet body 46 is formed so that a part thereof swells toward one side, and the tablet accommodating portion 47 is formed. A metal sheet (not shown) is affixed to the other surface of the sheet body 46, and the tablet accommodating portion 47 is sealed with this metal sheet.

  -The layer which comprises the sheet | seat body 10 is not restricted to two layers, a base material layer and a metal layer, and may have three or more layers as long as it has at least a metal layer. Or you may comprise the sheet | seat body 10 only with a metal layer. For example, when the sheet body 10 is a metal plate such as aluminum, the sheet body 10 is composed of only a metal layer.

  -The communication form of the IC part 20 of the said embodiment is not restricted to an electromagnetic induction system and a radio wave system. For example, a so-called active type IC unit 20 that incorporates a power source in the IC unit 20 and can emit radio waves without irradiation of magnetic flux or radio waves from an IC reader may be employed.

  The configuration of the IC body 22 is not limited to that of the above embodiment. For example, the circular sheet 23 is not limited to a circular shape, and may be a polygonal shape such as a triangle or a quadrangle. Further, the IC chip 24 provided on the circular sheet 23 may be provided at the edge of the circular sheet 23, or the antenna part 25 may be routed in a square shape.

Next, a technical idea that can be grasped from the above-described embodiment and modified examples will be described below.
A sheet-like object comprising at least a sheet body having a metal layer and an IC part having an IC chip and an antenna unit for wireless communication, the metal sheet being provided in the thickness direction of the metal layer; A cut portion formed by cutting the metal layer and cutting the metal layer in at least one of the plane directions of the metal layer is formed, and at least a part of the antenna portion is positioned in the cut portion. Characteristic sheet.

The perspective view of the sheet-like object in embodiment. The top view of the IC part in an embodiment. The model perspective view at the time of attachment of the IC main body in embodiment. The elements on larger scale of the sheet-like material in embodiment. (A), (b) and (c) are the front views of the sheet-like article in a modification. (A) And (b) is a front view of the sheet-like article in a modification. The front view of the sheet-like material in the example of a change. The perspective view of the sheet-like object in the example of a change. Sectional drawing of the package in a prior art.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Sheet | seat body, 11 ... Through-hole, 12 ... Excision part as a permeation | transmission part, 20 ... IC part, 21 ... Seal member, 22 ... IC main body, 23 ... Circular sheet, 24 ... IC chip, 25 ... Antenna part.

Claims (3)

A sheet-like material comprising at least a sheet body having a metal layer, and an IC part provided with an IC chip and an antenna part for wireless communication on the bonding surface side of a sealing member formed of a non-metallic material,
The sheet body is formed with a transmission portion that allows transmission of radio waves and magnetic flux to the metal layer in the thickness direction of the metal layer and allows transmission of radio waves and magnetic flux to the metal layer in the plane direction of the metal layer. And
The seal member is attached to the surface of the sheet body so as to sandwich the sheet body from both sides so that at least a part of the antenna portion is located in the transmission portion and the transmission portion is covered with the seal member. A sheet-like material characterized by   The sheet-like object according to claim 1, wherein the transmission part is formed by cutting a metal layer. A method for producing a sheet-like article comprising: a sheet body having at least a metal layer; and an IC portion provided with an antenna portion and an IC chip for wireless communication on the bonding surface side of a sealing member formed of a non-metallic material. And
The sheet body has a transmission portion that allows transmission of radio waves and magnetic flux to the metal layer in the thickness direction of the metal layer and allows transmission of radio waves and magnetic flux to the metal layer in the surface direction of the metal layer. Forming, and
The seal member is placed on the surface of the sheet body while sandwiching the sheet body from both sides with the seal member so that at least a part of the antenna unit is located in the transmission part and the transmission part is covered with the seal member. And a step of attaching the sheet.

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