JP7795872B2 - RFID labels and methods for using RFID labels - Google Patents

Description

The present invention relates to RFID labels and methods for using RFID labels.

Labels that can be attached to cylindrical objects such as blood collection tubes and test tubes have been proposed (see Patent Document 1). The label described in Patent Document 1 has perforations or holes formed at the end of the label to prevent the end of the label from lifting up due to being unable to follow the curved surface of the test tube.

Japanese Patent Application Publication No. 11-73109

In recent years, RFID media such as RFID tags and RFID labels that support RFID (Radio Frequency Identification) technology, which sends and receives information via contactless communication from IC chips that contain product-related and identification information, have become widespread in fields such as product manufacturing, management, and distribution.

Since such RFID labels contain an antenna pattern and a resin substrate for forming the antenna pattern, they are less likely to bend than labels that do not contain an RFID inlay, and the edges of the label are more likely to lift up when attached to a cylindrical object such as a test tube.

Furthermore, blood collection tubes, test tubes, etc. are sometimes used in harsh environments such as extremely low temperatures or high temperatures and humidity. In such cases, the environmental adaptability of the label substrate exceeds its tolerance range, making it particularly prone to peeling when attempting to attach it to a non-flat surface.

Furthermore, in such applications, there are cases where the label must be attached even when water droplets or the like are attached to the surface of the adherend, such as a test tube. For this reason, RFID labels are sometimes required to be able to be attached to the adherend even under such harsh conditions.

The present invention aims to prevent RFID labels from lifting off the surface of the substrate and making them less likely to peel off.

According to one aspect of the present invention, there is provided an RFID label including an RFID inlay and having a corrugated portion formed on at least a portion of its periphery , the corrugated portion having a plurality of arcs formed by bulging outward from the RFID inlay and a curved portion formed as an arc recessed inward from the RFID inlay between two adjacent arcs among the plurality of arcs, the diameter of the arc at the curved portion being smaller than the diameter of the arc formed by bulging outward .

In the above embodiment, a corrugated portion is formed on at least a portion of the periphery of the RFID label containing the RFID, which makes it easier for the outer periphery of the RFID label to conform to the surface of the adherend. This prevents the RFID label from lifting off the surface of the adherend, making it less likely to peel off.

1 is a plan view of a continuous RFID label body according to an embodiment of the present invention, viewed from the front surface side. 2 is an enlarged plan view showing one of the RFID inlays disposed in the separator of the continuous RFID label shown in FIG. 1. FIG. FIG. 10 is an enlarged view of a part of the non-parallel portion. 4 is a cross-sectional view taken along line IV-IV in FIG. 2. FIG. 10 is a plan view of an RFID label according to a first modified example, as viewed from the front side. FIG. 10 is a plan view of an RFID label according to a second modified example, as viewed from the front side. FIG. 11 is a plan view of an RFID label according to a third modified example, as viewed from the front side. FIG. 11 is a plan view of an RFID label according to a fourth modified example, as viewed from the front side. FIG. 11 is a plan view of an RFID label according to a fifth modified example, viewed from the front side. FIG. 13 is a plan view of an RFID label according to a sixth modified example, viewed from the front side. FIG. 13 is a plan view of an RFID label according to a seventh modified example, viewed from the front side. 1A and 1B are diagrams illustrating a test tube to which an RFID label according to the present embodiment is attached, and a state in which the RFID label is attached to the test tube. FIG. 12 is an external view of an Erlenmeyer flask as an adherend to which the RFID label shown in FIG. 11 is attached. 1 is an external view of a bag as an adherend to which an RFID label according to an embodiment of the present invention is attached.

[RFID label]
An RFID label 10 according to an embodiment of the present invention will be described.

Figure 1 is a plan view of a continuous RFID label strip 1 according to an embodiment, viewed from the front side. Figure 2 is an enlarged plan view of one of the RFID labels 10 arranged on a separator S of the continuous RFID label strip 1 shown in Figure 1.

As shown in Figure 1, the RFID label continuum 1 comprises multiple RFID labels 10 arranged on a long, strip-shaped separator S. The multiple RFID labels 10 are arranged in the longitudinal direction of the separator S (the Y direction shown in Figure 1).

As shown in Figures 1 and 2, RFID label 10 has opposing peripheral edges 11, 12 in the longitudinal direction of separator S (hereinafter referred to as the Y direction), which have non-parallel portions 13, 14 that are non-parallel to the width direction of separator S (hereinafter referred to as the X direction), and straight portions 15, 16.

The RFID label 10 according to this embodiment is rectangular, and the non-parallel portions 13, 14 and straight portions 15, 16 described above are formed on each of the longitudinal edges of the RFID label 10, while the shorter edges of the RFID label 10 are formed by straight lines.

The non-parallel portions 13, 14 that form part of the outline (outer periphery) of the RFID label 10 have recesses 131, 141 that are recessed inward of the RFID label 10 relative to the peripheral portions 11, 12, on the same plane as the rectangular RFID label 10. In other words, the non-parallel portions 13, 14 are corrugated portions formed in a corrugated shape.

Figure 3 is an enlarged view of a portion of the non-parallel portion 13. In this embodiment, as shown in Figures 2 and 3, the non-parallel portion 13 has a structure in which multiple recesses 131, recessed in the Y direction toward the inside of the RFID label 10 relative to the peripheral edge portion 11, are continuous in the X direction.

Note that the non-parallel portion 14 has a similar structure to the non-parallel portion 13 described above, so the following description will focus on the non-parallel portion 13.

As shown in Figure 3, in this embodiment, some of the recesses 131 that make up the non-parallel portion 13 are formed as curves that bulge outward from the RFID label 10 on the same plane as the RFID label 10 (i.e., in the Y direction).

In this embodiment, the recess 131 is composed of an arc 132 formed by a perfect circle M centered at point Om, with its vertex Tm pointing outward from the RFID label 10, and an arc 133 overlapping the circle M and a perfect circle N centered at point On, with its vertex Tn pointing outward from the RFID label 10.

In addition, in this embodiment, at the intersection of the arcs 132 and 133 that make up the recess 131, a curved portion 134 that is recessed in an arc shape toward the inside of the RFID label 10 (i.e., in the Y direction) is formed.

This curved portion 134 can be rephrased as a chain reaction prevention portion that prevents the chain reaction of peeling between the arcs 132 and 133 that are arranged side by side.

In other words, the non-parallel portions 13, 14 that form part of the contour (outer periphery) of the RFID label 10 have curved portions 134 (chain-preventing portions). When the non-parallel portions 13, 14 are configured to include arcs 132, 133 that protrude outward, the curved portions 134 are formed between adjacent arcs 132, 133.

For example, even if one of the consecutive arcs 132, 133 lifts off the adherend, the curved portion 134 formed between arcs 132 and 133 prevents the other arc from lifting up in conjunction with the lifting of the other arc. This prevents adjacent arcs 132 and 133 from lifting up in a chain reaction. In other words, the curved portion 134 functions as a chain reaction prevention portion that prevents the chain reaction of peeling of arcs 132 and 133.

In this embodiment, from the perspective of eliminating water droplets, the recesses 131 that make up the non-parallel portion 13 preferably do not include straight line portions, and are preferably formed by overlapping arc shapes. In this embodiment, as an example, the diameters of the circles M, N, ... are each 5 mm, and they are designed to overlap each other by 1 mm.

The non-parallel portion 13 is formed by a plurality of such recesses 131 arranged continuously in the X direction. The same is true for the non-parallel portion 14.

In this embodiment, the non-parallel portions 13, 14 allow the edges of the RFID label 10 to easily conform to the surface of the adherend. This prevents the RFID label 10 from lifting off the surface of the adherend, making it less likely to peel off.

Furthermore, by having the non-parallel portions 13, 14, even if water droplets or the like are present between the RFID label 10 and the surface of the adherend to which the RFID label 10 is affixed, when the RFID label 10 is affixed, the water droplets are more likely to drain from between the RFID label 10 and the adherend surface toward the recesses 131, 141, compared to conventional labels in which the label edges are formed only in straight lines. This improves the attachment state between the RFID label 10 and the adherend.

In terms of the effectiveness of discharging water droplets, it is preferable that the non-parallel portions 13, 14 be formed along the entire edge of the RFID label 10. However, if a printer equipped with a configuration that reads the gaps before and after the RFID label 10 is used to print on the RFID label 10, it is preferable to provide straight portions 15, 16 on the peripheral portions 11, 12.

Next, we will explain the layered structure of the RFID label 10. Figure 4 is a cross-sectional view taken along line IV-IV in Figure 2.

As shown in FIG. 4, the RFID label 10 placed on the separator S includes an RFID inlay 20 and a surface substrate 30 covering the RFID inlay 20.

The RFID inlay 20 comprises a substrate 21, an antenna pattern 22 formed on the substrate 21 using metal foil, and an IC chip 23 connected to the antenna pattern 22.

Furthermore, as shown in FIG. 4, in the RFID label 10, a label base material consisting of a surface base material 30 and a first adhesive layer A1 is laminated on the surface of the base material 21 on which the IC chip 23 is mounted.

The surface of the substrate 21 opposite the surface on which the IC chip 23 is mounted is temporarily attached to the separator S via a second adhesive layer A2. The RFID label 10 is peeled off from the separator S and attached to an adherend by the second adhesive layer A2.

The substrate 21 can be, for example, a single resin film such as polyvinyl chloride, polyethylene terephthalate, polypropylene, polyethylene, or polyethylene naphthalate, or a multilayer film made by laminating multiple such resin films.

In this embodiment, in addition to the resin film substrate described above, paper substrates such as high-quality paper, medium-quality paper, or coated paper formed using these can be used as the substrate 21.

In this embodiment, the substrate 21 can have a thickness of 10 μm to 200 μm.

In this embodiment, as shown by the dashed lines in Figures 1 and 2, the antenna pattern 22 constitutes a dipole antenna, comprising a loop portion on which the IC chip 23 is mounted, meanders extending symmetrically from the loop portion, and capacitor hats connected to the ends of the meanders. The extension direction of the antenna pattern 22 is the same as the extension direction of the non-parallel portions 13 and 14, i.e., the direction in which the arc 132 and the arc 133 join.

In this embodiment, the antenna pattern 22 is designed, as an example, to have an antenna length and antenna line width compatible with the UHF band (300 MHz to 3 GHz, particularly 860 MHz to 960 MHz).

As shown in FIG. 4, the antenna pattern 22 is adhered to the substrate 21 by an adhesive layer A3 made of, for example, an acrylic, urethane, silicone, or rubber-based adhesive or bonding agent.

The antenna pattern 22 is formed from metal foil. Examples of metals that can be used for the antenna pattern 22 include copper and aluminum. In this embodiment, aluminum foil is used to reduce manufacturing costs.

The thickness of the metal foil is preferably 3 μm or more and 50 μm or less, taking into consideration the overall thickness of the RFID inlay 20, or the thickness of the RFID label 10, and manufacturing costs. In this embodiment, as an example, aluminum foil with a thickness of 20 μm is used.

The IC chip 23 is a semiconductor package designed to support the UHF band and to be able to communicate with a reader (not shown) that reads the IC chip 23.

Although not shown in Figure 4, the IC chip 23 is electrically and mechanically connected to part of the loop portion of the antenna pattern 22 using an anisotropic conductive material such as an anisotropic conductive adhesive or an anisotropic conductive film.

In this embodiment, the RFID inlay 20 and the surface substrate 30 have the same planar shape. The non-parallel portions 13, 14 can be formed by laminating the surface substrate 30 and the RFID inlay 20 together, and then punching out both the surface substrate 30 and the RFID inlay 20 using a cutter with the same shape as the non-parallel portions 13, 14. Alternatively, for example, the RFID inlay 20 laminated on the inner side of the surface substrate 30 may be smaller than the surface substrate 30 in planar shape. In this case, the non-parallel portions 13, 14 may be formed only on the surface substrate 30.

<Effects>
According to the RFID label continuum 1 having the above-described configuration, the RFID label 10 has non-parallel portions 13, 14 that are non-parallel to the width direction (X direction) of the separator S formed on the peripheral portions 11, 12 that face each other in the longitudinal direction (Y direction) of the separator S.

In the case of the RFID label 10, because metal foil is used for the antenna pattern 22 formed on the RFID inlay 20, combined with the stress that causes the base material 21 of the RFID inlay 20 to return to a flat surface, the edges of the RFID label 10 tend to lift up from the surface of the adherend. In contrast, the RFID label 10 has non-parallel portions 13, 14, which make it easier for the non-parallel portions 13, 14 to conform to the surface of the adherend. This prevents the RFID label 10 from lifting up from the surface of the adherend, making the RFID label 10 less likely to peel off.

Furthermore, with the RFID label 10 according to this embodiment, even if water droplets exist between the RFID label 10 and the surface of the adherend, when the RFID label 10 is attached to the surface of the adherend, the water droplets present between the RFID label 10 and the surface of the adherend are easily expelled to the outside through the non-parallel portions 13, 14.

For this reason, RFID label 10 can be attached to the surface of an object without lifting up, even if the surface is wet, unlike RFID labels with linearly formed edges.

In addition, the non-parallel portions 13, 14 have recesses 131, 141 that are recessed inward of the RFID label 10 relative to the peripheral portions 11, 12 in the direction along the plane of the rectangular RFID label 10.

By forming the recesses 131, 141, even if water droplets exist between the RFID label 10 and the surface of the substrate, when the RFID label 10 is attached to the surface of the substrate, the water droplets are pushed out of the recesses 131, 141 and easily expelled from between the RFID label 10 and the surface of the substrate.

In addition, in this embodiment, some of the recesses 131 that make up the non-parallel portion 13 are configured to include arcs 132 and 133 that bulge outward from the RFID label 10 on the same plane (Y direction) as the RFID label 10.

In this way, by forming arc portions as the non-parallel portions 13, 14 of the RFID label 10, compared to conventional RFID labels with straight edges, water droplets between the RFID label 10 and the surface of the adherend can move radially toward the arc portions of the non-parallel portions 13, 14, making it easier for water droplets to be expelled from between the RFID label 10 and the surface of the adherend to the outside.

In addition, in this embodiment, a curved portion 134 that is recessed toward the inside of the RFID label 10 (in the Y direction) is formed at the intersection of the arcs 132 and 133 that make up the recess 131. This allows water droplets discharged from the recesses 131, 141 to be caught by the curved portion 134, preventing water droplets that have been discharged outward from between the RFID label 10 and the surface of the substrate in the recesses 131, 141 from returning between the RFID label 10 and the substrate.

If the entire periphery of the RFID label 10 were formed as a wavy, non-parallel portion 13, 14, it would be easily peeled off from the separator S. In contrast, by forming straight portions 15, 16 on the periphery 11, 12, the RFID label 10 can be prevented from peeling off easily from the separator S.

Furthermore, when printing on the RFID label 10 using a printer equipped with a configuration for reading gaps in the RFID label 10, the straight sections 15 and 16 allow for more accurate reading of the gaps than when detecting gaps in the RFID label 10 at the non-parallel sections 13 and 14.

In addition, by printing so-called eye marks, which are used as markers for printing the RFID label 10, on the straight section 15 in advance, the printer can align the label for printing more accurately than if the printer aligns the label for printing based on eye marks printed on the non-parallel sections 13 and 14.

Furthermore, the straight sections 15, 16 allow for more accurate inspection of whether the RFID label 10 is attached to the adherend in the correct position and in the correct condition, compared to when detection is based on the non-parallel sections 13, 14.

<Modification of RFID Label>
Next, modified examples of the RFID labels to be arranged on the continuous RFID label web 1 according to this embodiment will be described.

Figure 5 is a plan view of an RFID label 200 according to a first modified example, viewed from the front side. The RFID label 200 has non-parallel portions 201, 202 formed on the peripheral edges 11, 12, which protrude outward from the RFID label 10 beyond the peripheral edges 11, 12 and are formed as convex portions.

Figure 6 is a plan view of an RFID label 210 according to a second modified example, viewed from the front side. The non-parallel portions 211, 212 formed on the peripheral edges 11, 12 of the RFID label 210 are formed by combining elliptical arcs.

Figure 7 is a plan view of an RFID label 220 according to a third modified example, viewed from the front side. The RFID label 220 has sinusoidal non-parallel portions 221, 222 formed on the peripheral edges 11, 12.

Figure 8 is a plan view of an RFID label 230 according to a fourth modified example, viewed from the front side. The RFID label 230 has triangular wave-shaped non-parallel portions 231, 232 formed on the peripheral edges 11, 12.

Figure 9 is a plan view of an RFID label 240 according to a fifth modified example, viewed from the front side. The RFID label 240 has rectangular wave-shaped non-parallel portions 241, 242 formed on the peripheral edges 11, 12.

Figure 10 is a plan view of an RFID label 250 according to a sixth variation, viewed from the front side. The RFID label 250 has trapezoidal wave-shaped non-parallel portions 251, 252 formed on the peripheral edges 11, 12.

Figure 11 is a plan view of an RFID label 260 according to a seventh modified example, viewed from the front side. The RFID label 260 has non-parallel portions 261 and 262.

In the RFID label 260, the peripheral edge portion 11 and non-parallel portion 261 form a predetermined angle in the X direction, and the peripheral edge portion 12 and non-parallel portion 262 facing the peripheral edge portion 11 and non-parallel portion 261 are formed to be symmetrical to the peripheral edge portion 11 and non-parallel portion 261 with respect to an axis along the X direction.

Furthermore, the peripheral edges 263, 264 facing each other in the X direction are formed in a curve that convexly tapers toward the opposing peripheral edges 11 and 12.

As with RFID label 10, RFID labels 200 to 260 shown in Figures 5 to 11 described above can easily conform to the surface of the substrate, making them less likely to peel off from the surface of the substrate.

In addition, water droplets between the RFID label and the surface of the adherend can be pushed out from between the RFID label and the surface of the adherend, resulting in good adhesion.

[Adherend]
Next, an adherend according to an embodiment of the present invention will be described. Fig. 12 is a diagram illustrating a test tube P1 as an adherend to which an RFID label 10 according to this embodiment is attached, and a state in which the RFID label 10 is attached to the test tube P1.

In this embodiment, the adherend is a cylindrical or tubular body with a curved surface to which the RFID label 10 is attached. As an example, we will explain the case where the adherend is a test tube P1.

Conventional RFID labels contain an RFID inlay, making them less likely to bend than labels that do not contain an RFID inlay. As a result, when attempting to attach the label to a cylindrical object such as test tube P1, as in this embodiment, there is an issue where the edge of the label tends to lift up.

In particular, materials such as polymethylpentene, which are highly transparent and have the second lowest surface tension after fluororesin, are sometimes used as the material for test tube P1. Polymethylpentene test tubes have the characteristic of making it difficult for labels to stick to them.

Furthermore, because test tube P1 is used for blood collection and specimen testing, it is exposed to a wide range of temperature environments, from extremely low to high temperatures, as well as high humidity environments. Furthermore, in such applications, it may be necessary to affix a label even if there are water droplets or the like on the surface of test tube P1.

When using the RFID label 10 on a curved test tube P1, the following method can be used as an example. Note that the following method can be achieved using an attachment device, etc.

First, while the RFID label strip 1 shown in Figure 1 is being transported in the Y direction, the necessary information is printed on each RFID label 10 using a printer (not shown).

Next, RFID label 10, which has corrugated portions (non-parallel portions 13, 14) on each of its opposing edges, is attached to curved test tube P1 so that the corrugated portions, i.e., non-parallel portions 13 and 14, face each other.

As an example, the RFID label 10 is peeled off from the separator S, and as shown in Figure 12, the peripheral portion 11 and non-parallel portion 13 of the RFID label 10 are brought into contact with the surface of the test tube P1. The RFID label 10 is then conveyed, and the test tube P1 is rotated in the direction of rotation R at the same speed as the conveyance speed of the RFID label 10, while the RFID label 10 is wrapped around and attached to the surface of the test tube P1.

With the RFID label 10 of this embodiment, even if water droplets or the like are attached to the surface of the test tube P1, when the non-parallel portion 13 abuts against the surface of the test tube P1, the water droplets or the like are radially pushed aside by the recesses 131 included in the non-parallel portion 13, preventing the water droplets or the like from getting between the RFID label 10 and the surface of the test tube P1.

Furthermore, after the non-parallel portion 13 comes into contact, the test tube P1 is rotated in the rotation direction R at the same speed as the conveying speed of the RFID label 10 to attach the RFID label 10 to the test tube P1. As a result, water droplets adhering to the surface of the test tube P1 are sandwiched between the RFID label 10 and the surface of the test tube P1 and pushed backward in the rotation direction of the RFID label 10 (upstream in the conveying direction).

The non-parallel portion 14 has a recess 141 formed therein, which makes it easier for water droplets between the RFID label 10 and the surface of the substrate to be discharged in the radial direction toward the arc shape of the recess 141.

As a result, water droplets pushed out between the RFID label 10 and the surface of the substrate are expelled from the peripheral portion 12 and non-parallel portion 14 located upstream in the conveying direction, out from between the RFID label 10 and the surface of the substrate.

The RFID label 10 according to this embodiment promotes the discharge of water droplets between the RFID label 10 and the test tube P1, resulting in a good attachment state.

The RFID label 10 according to this embodiment easily adheres to the surface of the test tube P1, even when applied to a test tube P1 used under the harsh conditions described above, and a good adhesion state can be achieved, preventing the RFID label 10 from lifting off the surface of the test tube P1.

In this way, it is possible to obtain a test tube P1 with an RFID label 10 attached without it lifting up.

When applying the RFID label 10 to a cylindrical adherend such as a test tube P1, the RFID label 10 according to this embodiment may be printed with information specifying the attachment direction relative to the test tube P1 so that the X direction of the RFID label 10 is aligned with the axial direction of the test tube P1.

Next, we will explain other forms of adherends.

Figure 13 is an external view of an Erlenmeyer flask P2 as an adherend with the RFID label 260 shown in Figure 11 affixed thereto as a seventh modified example.

As with RFID label 260, peripheral edge 11 is formed at a predetermined angle in the X direction, and peripheral edge 12, which faces peripheral edge 11, is formed so that it is symmetrical to peripheral edge 11 with respect to an axis along the X direction. Furthermore, by forming peripheral edges 263, 264, which face each other in the X direction, into a curve that convexly tapers, it is possible to make the label less likely to peel off even from tapered adherends such as Erlenmeyer flask P2.

The adherend may also be a bag P3 in which a liquid or amorphous object is sealed.

Figure 14 is an external view of a bag P3 as an adherend to which an RFID label 10 according to this embodiment has been affixed. Note that in addition to the adherends shown in Figures 13 and 14, other objects may also be adherends, such as spheres or rugby balls with three-dimensional curved surfaces, or boxes.

The RFID label 10 easily adheres to the surface of the bag P3, even with this type of bag P3, and a good adhesion state can be achieved.

[Other embodiments]
Although the embodiments of the present invention have been described above, the above embodiments merely illustrate some of the application examples of the present invention, and are not intended to limit the technical scope of the present invention to the specific configurations of the above embodiments.

In this embodiment, the diameter of the arc that forms the recess 131 and the overlap length of the circles in the non-parallel portion 13 can be changed as appropriate.

In this embodiment, in the collection of elliptical shapes, sinusoidal waves, triangular waves, rectangular waves, and trapezoidal waves described using Figures 5 to 10, the major and minor axes of the ellipses, the amplitude and wavelength of the sine waves, the amplitude and wavelength of the rectangular waves, etc. are not limited to the dimensional ratios shown in the drawings. The dimensional ratios of the shapes constituting the non-parallel portions 13, 14 can be changed as appropriate within the range that produces the desired effect.

In this embodiment, the non-parallel portions 13, 14 may be configured to include at least one curved shape. Other examples of the non-parallel portions 13, 14 include a collection of elliptical shapes described using Figures 5 to 10, a sinusoidal wave shape, a triangular wave shape, a rectangular wave shape, and a trapezoidal wave shape, or a shape that combines all of these shapes.

In this embodiment, only one of the non-parallel portions 13 and 14 may be formed.

In this embodiment, the antenna pattern 22 is described as a dipole antenna for a UHF band inlet, but it may also be a coil antenna for the HF band.

1 RFID label continuum 10 RFID label 11, 12 Peripheral edge portion 13, 14 Non-parallel portion (wave portion)
DESCRIPTION OF SYMBOLS 15, 16 Straight portion 20 RFID inlay 21 Substrate 22 Antenna pattern 23 IC chip 30 Surface substrate 131, 141 Recess 132, 133 Circular arc 134 Curved portion 200, 210, 220, 230, 240, 250, 260 RFID label 201, 202, 211, 212, 221, 222, 231, 232, 241, 242, 251, 252, 261, 262 Non-parallel portion 263, 264 Curved portion A1 First adhesive layer A2 Second adhesive layer A3 Third adhesive layer P1 Test tube (adherend)
P2 Erlenmeyer flask (substrate)
P3 Bag (adherent)
S separator

Claims (8)

Includes an RFID inlay,
having a corrugated portion formed on at least a portion of the periphery;
The corrugated portion is
The RFID inlay has a plurality of arcs formed by bulging outward from the RFID inlay, and a curved portion formed as an arc recessed inward from the RFID inlay between two adjacent arcs among the plurality of arcs,
a diameter of the arc at the curved portion is smaller than a diameter of the arc formed by the outward bulge;
RFID label. 2. The RFID label of claim 1,
The wavy portion and the straight portion are formed on the periphery of the RFID label.
RFID label. 3. The RFID label according to claim 2,
The RFID label has a rectangular shape,
The RFID label has a longitudinal edge formed with the corrugated portion and the straight portion,
The short-side edges of the RFID label are formed by straight lines.
RFID label. 4. The RFID label according to claim 1,
The RFID inlay has an antenna pattern extending in a predetermined direction,
The extending direction of the corrugated portion and the extending direction of the antenna pattern are the same direction.
RFID label. an RFID inlay , and a corrugated portion on at least a portion of each of the opposing edges of the RFID label ;
the corrugated portion has a plurality of arcs formed by bulging outward from the RFID inlay, and a curved portion formed as an arc recessed inward from the RFID inlay between the plurality of arcs, and the diameter of the arc at the curved portion is smaller than the diameter of the arc formed by bulging outward ,
The corrugated portions are attached to an adherend having a curved surface so that they face each other.
How to use RFID labels. A method of using the RFID label according to claim 5, comprising:
The RFID label has a circumferential edge formed with the corrugated portion and a straight portion, and the corrugated portion is formed between the straight portions,
The tape is attached to the adherend having a curved surface so that the corrugated portions formed between the linear portions face each other.
How to use RFID labels. 2. The RFID label of claim 1,
The RFID label is rectangular and has an adhesive layer that adheres the RFID inlay to the surface of an adherend,
the RFID label has opposing peripheral edges in a longitudinal direction, the peripheral edges in the longitudinal direction having a straight portion and the corrugated portion;
The corrugated portion is
a first shape formed by the overlapping of the outwardly bulging arcs;
the curved portion is formed at an intersection of the adjacent arcs that form the first shape, recessed inward, and formed more inward than the straight portion;
RFID label. A continuous RFID label sheet in which RFID labels are arranged at predetermined intervals in the longitudinal direction of a long separator and temporarily attached to the separator,
The RFID label is rectangular and has an adhesive layer that adheres the RFID inlay to the surface of an adherend,
the RFID label has opposing peripheral edges, the peripheral edges having a straight portion and a corrugated portion;
The corrugated portion is
a first shape formed by overlapping outwardly bulging arcs;
a curved portion formed at an intersection of the adjacent arcs that form the first shape and recessed inward, the curved portion being formed more inward than the straight portion,
RFID label continuum.