Label

Abstract

To make it easy to detect peeling-off in a case of bing peeled off after bonded to an adherend.SOLUTION: A label has: a base material 10; a peeling layer 20 that is laminated into a shape of a latent image pattern on one face of the base material 10; an adhesive layer 30 that is laminated covering the peeling layer 20 on the entire face on which the peeling layer 20 of the base material 10 is laminated; and a slit 11 that penetrates a front surface and rear surface of a peeling detection label 1. The slit 11 has: a main notch part 11a that extends in a first direction; and two sub-notch parts 11b that extend, from each of both end parts of the main notch part 11a toward a first area 13a side of the first area 13a and the second area 13b adjacent to each other via the main notch part 11a in a second direction orthogonal to the first direction.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a label. [Background technology]

[0002] BACKGROUND ART Conventionally, various measures have been taken to detect whether a label that is affixed to an adherend has been improperly removed after affixing.

[0003] For example, Patent Document 1 discloses a label in which a release agent layer is disposed on the back surface of a label substrate in the shape of letters, a pattern, etc., and a colored adhesive is further applied over the release agent layer. When this label is peeled off after being attached to an object, the release agent layer and the adhesive peel off, revealing information such as letters or a pattern.

[0004] By attaching a label having such a structure across the opening portion of an adherend such as a box, it is possible to detect tampering with the adherend. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-330370 Summary of the Invention [Problem to be solved by the invention]

[0006] However, in labels such as those disclosed in Patent Document 1, in which a release layer is laminated in a predetermined pattern on one side of a substrate and a colored adhesive layer is further laminated on the release layer, the release layer and the adhesive layer may not peel off depending on the adhesion strength to the adherend and the method of peeling from the adherend. In labels in which the adhesive layer is made of a stretchable adhesive, when an attempt is made to peel the label off after it has been attached to the adherend, the adhesive layer stretches sufficiently while attached to the adherend, and then the area facing the release layer breaks, resulting in no adhesive layer being present in the area facing the release layer. However, depending on the adhesion strength to the adherend and the method of peeling from the adherend, the adhesive layer may not stretch sufficiently, making it difficult for the area facing the release layer to break. This may result in a risk of leaving no trace of the label having been peeled off from the adherend.

[0007] The present invention has been made in consideration of the problems associated with the conventional technology as described above, and aims to provide a label that can easily detect peeling if it is peeled off after being attached to an adherend. [Means for solving the problem]

[0008] In order to achieve the above object, the present invention provides: A label that reveals a latent image pattern when peeled off after being attached to an adherend, A base substrate; a release layer laminated on one surface of the base material in the shape of the latent image pattern; a colored adhesive layer laminated over the entire surface of the base substrate on which the release layer is laminated, covering the release layer; the base substrate, the release layer, and the colored adhesive layer have a cut that penetrates the base substrate, the release layer, and the colored adhesive layer; The incision is a main cut portion extending in a first direction; The main cut has two sub-cuts extending from each end of the main cut in a second direction perpendicular to the first direction toward the first region of a first region and a second region that are adjacent to each other via the main cut.

[0009] In the present invention configured as described above, when the label is peeled off after being attached to an adherend, the peel layer laminated on one side of the base substrate peels off from the colored adhesive layer, revealing a latent image pattern due to the peel layer, and peeling is detected. Here, the base substrate, the peel layer, and the colored adhesive layer are provided with a cut that penetrates the base substrate, the peel layer, and the colored adhesive layer, and this cut has a main cut portion extending in a first direction and two sub-cut portions that extend from each end of the main cut portion in a second direction perpendicular to the first direction toward the first region of a first region and a second region adjacent to each other via the main cut portion. Therefore, when the label is peeled off in the second direction from the second region side, the region surrounded by the main cut portion and the two sub-cut portions tends to remain attached to the adherend without following the peeling operation. As the label continues to be peeled from the substrate, the area enclosed by the main cut and the two minor cuts will also be peeled from the substrate, but the area enclosed by the main cut and the two minor cuts will be subjected to a larger load as a peeling force because it had remained attached to the substrate without following the peeling action. This load acts between the release layer and the colored adhesive layer, making it easier for the release layer to peel from the colored adhesive layer, and the latent image pattern will appear, allowing the peeling to be detected.

[0010] In this way, even if the release layer and the colored adhesive layer are difficult to separate when peeled off after being attached to the adherend due to the adhesive force with the adherend or the method of peeling from the adherend, in the area surrounded by the main cut and two sub-cuts, the release layer tends to remain attached to the adherend without following the peeling action, making it easier to peel off from the colored adhesive layer. This makes it easier to detect peeling when the release layer is peeled off after being attached to the adherend.

[0011] Also, a label that reveals a latent image pattern when peeled off after being attached to an adherend, A base substrate; a release layer laminated on one surface of the base material in the shape of the latent image pattern; a colored adhesive layer laminated over the entire surface of the base substrate on which the release layer is laminated, covering the release layer; the base substrate, the release layer, and the colored adhesive layer have a cut that penetrates the base substrate, the release layer, and the colored adhesive layer; The incision is a main cut portion extending in a first direction; The configuration may also include two sub-cuts extending from both ends of the main cut, drawing an arc in a second direction perpendicular to the first direction between a first region and a second region adjacent to each other via the main cut, curling toward the first region in the first region and facing each other, and the end opposite the main cut having two sub-cuts facing in the first direction or toward the main cut with respect to the first direction.

[0012] In this configuration, when the base material is fragile, for example, and the label is peeled off in the second direction from the second area side, the label is prevented from breaking from the end of the secondary cut portion opposite the main cut portion.

[0013] The base material may have a shape having a longitudinal direction, and the second direction may be the longitudinal direction.

[0014] The adherend may also have two adjacent members, and the adhesive may be attached across the two members so that the first direction is substantially perpendicular to the direction in which the two members are adjacent to each other. [Effects of the Invention]

[0015] According to the present invention, even if the release layer and the colored adhesive layer are difficult to separate when peeled off after being attached to the adherend due to the adhesive force with the adherend or the method of peeling off from the adherend, in the area surrounded by the main cut and two secondary cuts, the release layer tends to remain attached to the adherend without following the peeling action, making it easier to peel off from the colored adhesive layer, making it easier to detect the peeling when it is peeled off after being attached to the adherend.

[0016] In addition, in a configuration in which two secondary cuts extend from both ends of the main cut, curl toward the first region in the first region, and form an arc facing each other, with the end opposite the main cut facing the first direction or the main cut side relative to the first direction, when the label is peeled from the second region side in the second direction, for example, in cases where the base substrate is weak, it is possible to prevent the label from breaking from the end of the secondary cut opposite the main cut. [Brief explanation of the drawings]

[0017] [Figure 1] 1A and 1B are diagrams showing a first embodiment of the label of the present invention, in which (a) is a surface view, (b) is an AA cross-sectional view shown in (a), and (c) is a diagram showing the configuration of the slit shown in (a). [Figure 2] 2A and 2B are diagrams showing the structure of the laminated surface of the peel detection label shown in FIG. 1, where (a) is a diagram showing the structure of the laminated surface with the adhesive layer of the base substrate, and (b) is a diagram showing the structure of the laminated surface with the release paper of the adhesive layer. [Figure 3] 2 is a diagram showing an example of a usage form of the peel detection label shown in FIG. 1. FIG. [Figure 4] 4 is a cross-sectional view for explaining the basic action of the peel detection label shown in FIG. 1 when it is peeled off from a box when used as shown in FIG. 3. FIG. [Figure 5] 2 is a front view showing the state in which the peel detection label shown in FIG. 1 has been peeled off from the box. FIG. [Figure 6] 2 is a diagram for explaining the effect of the slits in the peel detection label shown in FIG. 1. FIG. [Figure 7] 2 is a surface view showing the state in which the effect of the slits is produced when the peel detection label shown in FIG. 1 is peeled off from the box. FIG. [Figure 8] 10A and 10B are diagrams showing a second embodiment of the label of the present invention, in which (a) is a surface view, (b) is an AA cross-sectional view shown in (a), and (c) is a diagram showing the configuration of the slit shown in (a). [Figure 9] 9 is a diagram for explaining the effect of the slits in the peel detection label shown in FIG. 8. FIG. [Figure 10] FIG. 9 is a surface view showing the state in which the effect of the slits is produced when the peel detection label shown in FIG. 8 is peeled off from the adherend. [Figure 11] 10A and 10B are diagrams showing other embodiments of notches provided in the label of the present invention. [Figure 12] 10A and 10B are diagrams showing other embodiments of notches provided in the label of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0019] (First embodiment) <Configuration of Peel Detection Label 1> First, the configuration of the peel detection label in this embodiment will be described.

[0020] Fig. 1 is a diagram showing a first embodiment of the label of the present invention, where (a) is a surface view, (b) is an AA cross-sectional view shown in (a), and (c) is a diagram showing the configuration of the slit 11 shown in (a). Fig. 2 is a diagram showing the configuration of the laminated surface of the peel detection label 1 shown in Fig. 1, where (a) is a diagram showing the configuration of the laminated surface with the adhesive layer 30 of the base substrate 10, and (b) is a diagram showing the configuration of the laminated surface with the release paper 40 of the adhesive layer 30.

[0021] As shown in FIG. 1, this embodiment is a peel detection label 1 having a base substrate 10, a peel layer 20, and an adhesive layer 30.

[0022] The base substrate 10 is made of a transparent or translucent film, which allows the color of one side to be seen from the other side. The base substrate 10 has a rectangular shape, and thus has a longitudinal direction.

[0023] As shown in FIGS. 1 and 2, the release layer 20 is laminated on one surface of the base substrate 10. The release layer 20 is made of a release agent such as transparent silicone, and is laminated on one surface of the base substrate 10 by applying the release agent in the shape of a latent image pattern. The latent image pattern is revealed when the peel detection label 1 is peeled off after being attached to an adherend. In this embodiment, the latent image pattern is an arrangement of multiple letters of "VOID," but it may also be a variety of other patterns such as letters, symbols, numbers, and patterns, or a combination of these.

[0024] The adhesive layer 30 is an example of a colored adhesive layer in the present invention, and is laminated on the entire surface of the base substrate 10 on which the release layer 20 is laminated, covering the release layer 20. The adhesive layer 30 is made of an elastic adhesive of any color, such as blue, red, or black, and is laminated by applying the adhesive to the entire surface of the base substrate 10 on which the release layer 20 is laminated. Since the base substrate 10 is made of a transparent or translucent film, the color of the adhesive layer 30 is visible from the surface of the base substrate 10. A release paper 40 is removably attached to the surface of the adhesive layer 30 opposite the release layer 20.

[0025] In the base substrate 10, the release layer 20 and the adhesive layer 30 thus laminated, a slit 11 is formed which penetrates the base substrate 10, the release layer 20 and the adhesive layer 30.

[0026] The slit 11 is an example of a cut defined in the present invention and is provided in a region of the base substrate 10 closer to one end in the longitudinal direction than the central portion in the longitudinal direction. As shown in FIG. 1(c), the slit 11 has one main cut 11a and two sub-cuts 11b. The main cut 11a extends in the lateral direction (first direction) of the base substrate 10 and is formed as a straight line shorter than the length of the base substrate 10 in the lateral direction. The two sub-cuts 11b are formed as straight lines connected to both ends of the main cut 11a in a rounded manner. When the regions adjacent to each other in the longitudinal direction (second direction) of the base substrate 10 via the main cut 11a are defined as a first region 13a and a second region 13b, the two sub-cuts 11b extend from both ends of the main cut 11a toward the first region 13a. In this embodiment, each of the two minor cuts 11b extends via the main cut 11a on the opposite side of the longitudinal center of the base substrate 10. More specifically, the two minor cuts 11b extend from both ends of the main cut 11a in directions away from each other on the first region 13a side. As a result, the ends 14 of the two minor cuts 11b opposite the main cut 11a face in different directions. Note that the two minor cuts 11b may be formed as straight lines connected to both ends of the main cut 11a without being rounded. However, connecting both ends of the main cut 11a in a rounded manner reduces the possibility of the peel detection label 1 accidentally breaking at the corner where the main cut 11a and the minor cut 11b are connected.

[0027] <How to use peel detection label 1> Next, a method of using the peel detection label 1 configured as above will be described.

[0028] FIG. 3 is a diagram showing an example of how the peel detection label 1 shown in FIG. 1 is used.

[0029] The peel detection label 1 shown in Fig. 1 is affixed to a box 2, which is an adherend, as shown in Fig. 3, for example, and is used as a means for detecting the opening of the box 2. The box 2 has two lids 4a, 4b, which are two adjacent members, on the top surface of a container portion 3 with an open top, and is opened by opening the lids 4a, 4b like double doors. Therefore, the space between the opposing sides when the lids 4a, 4b are closed becomes the opening portion 5 of the box 2.

[0030] When attaching the peel detection label 1 to such a box 2, the release paper 40 is peeled off to expose the adhesive layer 30, and as shown in Figure 3, the peel detection label 1 is attached to the box 2 by the adhesive layer 30 so as to straddle the two lids 4a, 4b and face the opening portion 5. In this case, the longitudinal direction of the peel detection label 1 is the direction in which the lids 4a, 4b are adjacent to each other, and the extension direction of the main notch 11a of the peel detection label 1 is perpendicular to the direction in which the lids 4a, 4b are adjacent to each other.

[0031] In this way, the peel detection label 1 is stuck across the lids 4a and 4b, so that the box 2 cannot be opened unless the peel detection label 1 is peeled off.

[0032] <Basic function of peel detection label 1> Next, a basic operation when the peel detection label 1 attached to the box 2 as described above is peeled off from the box 2 will be described.

[0033] FIG. 4 is a cross-sectional view for explaining the basic action of peel detection label 1 shown in FIG. 1 when it is peeled off from box 2 in the case where it is used as shown in FIG.

[0034] When the peel detection label 1 shown in FIG. 1 is attached to the box 2 as described above, it is attached by the adhesive layer 30 so as to straddle the lids 4a and 4b of the box 2, as shown in FIG. 4(a). The peel detection label 1 has a base substrate 10 made of a transparent or translucent film, so that the back surface can be seen through from the front surface opposite the surface attached to the box 2. However, the release layer 20 laminated on the surface of the base substrate 10 attached to the box 2 is made of a release agent such as transparent silicone, and a colored adhesive layer 30 is laminated on the entire surface of the release layer 20 so as to cover it. As a result, only the color of the adhesive layer 30 is visible on the entire surface, and the latent image pattern created by the release layer 20 is not visible.

[0035] When attempting to peel off the peel detection labels 1 from this state, if the peel detection labels 1 have a longitudinal direction as described above, peeling is easier by peeling them off from one longitudinal end of the peel detection labels 1. Therefore, as shown in Figure 3, if the peel detection labels 1 are affixed to the box 2 so that their longitudinal direction is the direction in which the lids 4a and 4b are adjacent and the direction in which the main notches 11a of the peel detection labels 1 extend is perpendicular to the direction in which the lids 4a and 4b are adjacent, the peel detection labels 1 will be peeled off in the direction in which the lids 4a and 4b are adjacent. In this case, even if the longitudinal direction of the peel detection labels 1 is slightly offset from the direction in which the lids 4a and 4b are adjacent and the direction in which the main notches 11a of the peel detection labels 1 extend is slightly offset from the direction perpendicular to the direction in which the lids 4a and 4b are adjacent, the peel detection labels 1 may still be peeled off in the direction in which the lids 4a and 4b are adjacent.

[0036] When the peel detection label 1 attached to the box 2 is peeled from one end side in the longitudinal direction, as shown in Fig. 4(b), in the region where the peel layer 20 is not laminated, the adhesive layer 30 peels off from the lids 4a, 4b together with the base substrate 10. On the other hand, in the region where the peel layer 20 is laminated, the adhesive layer 30 is adhered to the lids 4a, 4b with a stronger adhesive force than the adhesive force to the peel layer 20, so the adhesive layer 30 peels off from the peel layer 20. Then, because the adhesive layer 30 is stretchable, the portion peeled off from the peel layer 20 peels off from the lids 4a, 4b together with the base substrate 10, breaks in a direction perpendicular to the lamination direction with the peel layer 20, and is pulled by the portion that remains laminated on the base substrate 10, so that it almost disappears from the region facing the peel layer 20.

[0037] When the peel detection label 1 is completely peeled off from the lids 4a and 4b, the adhesive layer 30 is present almost only in the area where the peel layer 20 is not laminated, as shown in FIG. 4(c).

[0038] FIG. 5 is a front view showing the state in which the peel detection label 1 shown in FIG.

[0039] When the peel detection label 1 shown in FIG. 1 is peeled from the box 2 as described above, when the peel detection label 1 is viewed from the opposite side of the base substrate 10 from the surface attached to the lids 4a and 4b, the color of the adhesive layer 30 is visible through the base substrate 10 in the area not facing the peel layer 20 due to the presence of the adhesive layer 30. On the other hand, in the area facing the peel layer 20, the adhesive layer 30 is no longer present, so the color of the adhesive layer 30 is no longer visible. As a result, a latent image pattern 6 due to the peel layer 20 is revealed, as shown in FIG. 5. Even if printing is applied to the entire surface or part of the base substrate 10, the color of the printing is visible in the area facing the peel layer 20, while a color corresponding to the printing color of the base substrate 10 and the color of the adhesive layer 30 is visible in the area not facing the peel layer 20, and the latent image pattern 6 due to the peel layer 20 is revealed. For example, if the base substrate 10 is printed in red and the adhesive layer 30 is green, a red latent image pattern 6 will appear on a black background resulting from the mixture of red and green.

[0040] Even if the peel detection label 1 on which the latent image pattern 6 has appeared is then reattached to the box 2, the adhesive layer 30 is no longer present in the area opposite the peel layer 20, so the latent image pattern 6 remains visible, making it possible to recognize that the peel detection label 1 has been fraudulently peeled off from the box 2 and the lids 4a, 4b have been fraudulently opened.

[0041] Furthermore, when the peel detection label 1 is peeled off after being stuck to the box 2, the area of the adhesive layer 30 facing the peel layer 20 peels off from the peel layer 20 and breaks in a direction perpendicular to the lamination direction with the peel layer 20, so that when the peel detection label 1 is peeled off from the box 2, the adhesive layer 30 is all peeled off from the box 2 together with the base substrate 10. As a result, after the peel detection label 1 is peeled off from the box 2, no part of the peel detection label 1 remains on the box 2.

[0042] <Action by slit 11> Next, the effect of forming the slits 11 penetrating the base substrate 10, the release layer 20, and the adhesive layer 30 will be described.

[0043] As described above, when the peel detection label 1 shown in Figure 1 is peeled off after being attached to an adherend such as a box 2, the portion of the adhesive layer 30 facing the peel layer 20 peels off from the peel layer 20 and breaks in a direction perpendicular to the lamination direction with the peel layer 20, and is stretched by being pulled by the portion not facing the peel layer 20, so that the adhesive layer 30 is almost completely absent in the area facing the peel layer 20.

[0044] However, depending on the adhesive strength to the adherend and the method of peeling from the adherend, the adhesive layer 30 may not stretch sufficiently, making it difficult for the portion facing the release layer 20 to break. In such cases, it may become impossible to leave any trace of the peeling from the adherend.

[0045] 1, as described above, a slit 11 is formed through the base substrate 10, the peel layer 20, and the adhesive layer 30. The slit 11 has a main cut portion 11a extending in the short direction of the base substrate 10, and two sub-cut portions 11b extending from both ends of the main cut portion 11a via the main cut portion 11a toward the first region 13a, which is on the same side of the first region 13a and the second region 13b that are adjacent to each other in the longitudinal direction of the base substrate 10.

[0046] FIG. 6 is a diagram for explaining the action of the slit 11 of the peel detection label 1 shown in FIG.

[0047] After the peel detection label 1 configured as described above is attached to the box 2, when the peel detection label 1 is peeled off in the longitudinal direction from the second region 13b side shown in Figure 1(c), as shown in Figure 6, the region surrounded by the main cut portion 11a and the two sub-cut portions 11b will not follow the peeling action and will remain attached to the box 2 as the remaining region 7.

[0048] Thereafter, as the peel detection label 1 continues to be peeled off from the box 2, the remaining area 7 surrounded by the main cut 11a and the two sub-cuts 11b will also be peeled off from the box 2, but in the remaining area 7 surrounded by the main cut 11a and the two sub-cuts 11b, a large load is applied as a peel force because the remaining area 7 did not follow the peeling operation and instead tried to remain attached to the box 2. This load then acts between the peel layer 20 and the adhesive layer 30 in the remaining area 7, making it easier for the peel layer 20 to peel off from the adhesive layer 30.

[0049] FIG. 7 is a surface view showing a state in which the effect of the slit 11 is produced when the peel detection label 1 shown in FIG.

[0050] As described above, the release layer 20 is more likely to peel from the adhesive layer 30 in the remaining region 7 surrounded by the main cut 11a and the two sub-cuts 11b. As a result, even if the phenomenon of the portion of the adhesive layer 30 facing the release layer 20 breaking due to the adhesive force to the box 2 or the manner of peeling from the box 2 is less likely to occur and the latent image pattern 6 is not manifested, as shown in Fig. 7 , the latent image pattern 6 due to the release layer 20 is more likely to manifest in the remaining region 7 surrounded by the main cut 11a and the two sub-cuts 11b. At this time, the load applied as the peel force to the remaining region 7 continues to be applied in the region downstream in the peeling direction from the end 14 of the sub-cut 11b on the opposite side from the main cut 11a, making it easier for the release layer 20 to peel from the adhesive layer 30 and making it easier for the latent image pattern 6 due to the release layer 20 to manifest.

[0051] As described above, in this embodiment, even if the peeling layer 20 and the adhesive layer 30 are difficult to peel off due to the adhesive strength to the box 2 or the method of peeling off from the box 2, in the area surrounded by the main cut portion 11a and the two sub-cut portions 11b, the peeling layer 20 tends to be stuck to the box 2 and remain as the remaining area 7 without following the peeling operation, and therefore peels off easily from the adhesive layer 30. As a result, when the peeling layer 20 is peeled off after being stuck to the box 2, the latent image pattern 6 appears at least in the area surrounded by the main cut portion 11a and the two sub-cut portions 11b, making it easier to detect the peeling.

[0052] (Second embodiment) <Configuration of Peel Detection Label 101> First, the configuration of the peel detection label in this embodiment will be described.

[0053] FIG. 8 shows a second embodiment of the label of the present invention, where (a) is a surface view, (b) is an AA cross-sectional view shown in (a), and (c) is a view showing the configuration of the slit 111 shown in (a).

[0054] As shown in FIG. 8, this embodiment is a peel detection label 101 in which the shape of the slit 111 is different from that shown in FIG.

[0055] As shown in FIG. 8(c), the slit 111 in this embodiment has one main cut 111a and two sub-cuts 111b, and penetrates the base substrate 10, the release layer 20, and the adhesive layer 30. The main cut 111a extends in the short-side direction (first direction) of the base substrate 10 and is formed as a straight line shorter than the length of the base substrate 10 in the short-side direction. The two sub-cuts 111b are connected to both ends of the main cut 111a, and when the regions adjacent to each other in the longitudinal direction of the base substrate 10 via the main cut 111a are defined as the first region 13a and the second region 13b, the two sub-cuts 111b extend in an arc toward the first region 13a, facing each other. Specifically, the two sub-cuts 111b extend in an arc from both ends of the main cut 111a, curling toward the first region 13a and facing each other. Each of the arcs formed by the two minor cuts 111b constitutes a portion of the circumference of a circle having a predetermined radius, and its length is longer than half the circumference but shorter than three-quarters of the circumference. As a result, the end 114 opposite the main cut 111a faces the main cut 111a in the short direction of the base substrate 10. Each of the two minor cuts 111b is connected to both ends of the main cut 111a in a rounded curve. Note that the length of the minor cut 111b may be set to half the circumference of a circle, so that the end 114 of the minor cut 111b opposite the main cut 111a faces the short direction of the base substrate 10.

[0056] 1, a release layer 20 is laminated on one surface of the base substrate 10 by applying a transparent release agent in the shape of a latent image pattern, and an adhesive layer 30 is laminated on the entire surface of one surface of the base substrate 10 by applying a colored adhesive agent so as to cover the release layer 20. A release paper 40 is removably attached to the surface of the adhesive layer 30 opposite the release layer 20.

[0057] <Action by slit 111> Next, the function of the slit 111 in this embodiment will be described.

[0058] 8 is also used by being stuck to the box 2 across the lids 4a and 4b as shown in Fig. 3, similar to the one shown in Fig. 1. When peeled off from the box 2, the portion of the adhesive layer 30 facing the release layer 20 peels off from the release layer 20 and breaks in a direction perpendicular to the lamination direction with the release layer 20, and is stretched by being pulled by the portion not facing the release layer 20, so that the adhesive layer 30 is almost absent in the region facing the release layer 20.

[0059] However, depending on the adhesive strength to the box 2 and the method of peeling from the box 2, the adhesive layer 30 may not stretch sufficiently, making it difficult for the portion facing the release layer 20 to break. In such cases, it may become impossible to leave any trace that the adhesive layer has been peeled from the box 2.

[0060] 8 has a slit 111 formed therein that penetrates the base substrate 10, the peel layer 20, and the adhesive layer 30, as described above. The slit 111 has a main cutout 111a extending in the short-side direction of the base substrate 10, and two sub-cutouts 111b that extend from both ends of the main cutout 111a, drawing an arc and facing each other on the side of the first region 13a of the first region 13a and the second region 13b that are adjacent to each other in the long-side direction of the base substrate 10, via the main cutout 111a. Each of the two sub-cutouts 111b has an end 114 opposite the main cutout 111a facing the main cutout 111a toward the main cutout 111a in the short-side direction of the base substrate 10.

[0061] FIG. 9 is a diagram for explaining the action of the slit 111 of the peel detection label 101 shown in FIG.

[0062] After the peel detection label 101 configured as described above is attached to the box 2 shown in Figure 3, when the peel detection label 101 is peeled off in the longitudinal direction from the second area 13b side shown in Figure 8(c), as shown in Figure 9, the area surrounded by the main cut portion 111a and the two sub-cut portions 111b will not follow the peeling operation and will remain attached to the box 2 as the remaining area 107.

[0063] Thereafter, as the peel detection label 101 continues to be peeled off from the box 2, the remaining region 107 surrounded by the main cut 111a and the two sub-cuts 111b is also peeled off from the box 2. However, in the remaining region 107 surrounded by the main cut 111a and the two sub-cuts 111b, a large load is applied as a peel force because the remaining region 107 was initially stuck to the box 2 without following the peeling operation. This load then acts between the peel layer 20 and the adhesive layer 30 in the remaining region 107, making it easier for the peel layer 20 to peel off from the adhesive layer 30. At this time, because each of the two sub-cuts 111b is connected to both ends of the main cut 111a in a rounded curve, the possibility of the peel detection label 101 accidentally breaking off at the corner where the main cut 111a and the sub-cut 111b are connected can be reduced.

[0064] FIG. 10 is a surface view showing a state in which the effect of the slits 111 is produced when the peel detection label 101 shown in FIG. 8 is peeled off from the adherend.

[0065] As described above, the release layer 20 is more likely to peel from the adhesive layer 30 in the remaining region 107 surrounded by the main incision 111a and the two sub-incisions 111b. As a result, even if the phenomenon of the portion of the adhesive layer 30 facing the release layer 20 breaking due to the adhesive force to the adherend or the manner of peeling from the adherend is less likely to occur and the latent image pattern 106 is not manifested, as shown in Fig. 10 , the latent image pattern 106 by the release layer 20 is more likely to appear in the remaining region 107 surrounded by the main incision 111a and the two sub-incisions 111b. At this time, the load applied as the peeling force continues to be applied to the remaining region 107 in the region downstream in the peeling direction from the tip 115 of the sub-incision 111b, which is farthest from the main incision 111a, making it easier for the release layer 20 to peel from the adhesive layer 30 and making it easier for the latent image pattern 106 by the release layer 20 to appear.

[0066] Thus, also in this embodiment, even if the release layer 20 and the adhesive layer 30 are difficult to separate from each other due to the adhesive strength to the adherend or the method of peeling from the adherend, in the region surrounded by the main notch 111a and the two sub-notches 111b, the release layer 20 tends to remain attached to the adherend as the remaining region 107 without following the peeling operation, and therefore the release layer 20 is easily peeled from the adhesive layer 30. As a result, when the release layer 20 is peeled off after being attached to the adherend, the latent image pattern 106 appears at least in the region surrounded by the main notch 111a and the two sub-notches 111b, making it easier to detect the peeling.

[0067] Furthermore, in this embodiment, the two auxiliary cutouts 111b extend in an arc from both ends of the main cutout 111a so as to face each other, and the end opposite the main cutout 111a faces the short direction of the base substrate 10 or the main cutout 111a side with respect to the short direction of the base substrate 10. This makes it possible to prevent the peel detection label 101 from breaking at the end 114 of the auxiliary cutout 111b opposite the main cutout 111a when the peel detection label 101 is peeled from the second region 13b side shown in Figure 8(c) in the longitudinal direction of the peel detection label 101, for example, in cases where the base substrate 10 is fragile.

[0068] In the above-described embodiment, the incisions are exemplified by the slits 11 and 111. However, the incisions may be perforations made up of a cut portion and a tie portion.

[0069] (Other embodiments) FIG. 11 is a diagram showing another embodiment of a notch provided in a label of the present invention.

[0070] The notch provided in the peel detection label 1 shown in Fig. 1 may have one main notch 211a and two sub-notches 211b, as shown in Fig. 11(a). The main notch 211a extends in the short direction of the base substrate 10 shown in Fig. 1, and may be formed from a curve that is shorter than the length of the base substrate 10 in the short direction, as shown in Fig. 11(a). The two sub-notches 211b have the same configuration as the sub-notch 11b shown in Fig. 1, and are connected to both ends of the main notch 211a, and extend from there, via the main notch 211a, in directions away from each other on the side of the same region 13a of the regions 13a, 13b adjacent to each other in the longitudinal direction of the base substrate 10.

[0071] 1 may have one main cut 311a and two sub-cuts 311b, as shown in FIG. 11(b). The main cut 311a extends in the short direction of the base substrate 10 shown in FIG. 1, and may be a wavy line shorter than the length of the base substrate 10 in the short direction, as shown in FIG. 11(b). The two sub-cuts 311b have the same configuration as the sub-cut 11b shown in FIG. 1, and are connected to both ends of the main cut 311a, and extend from there, via the main cut 311a, in directions away from each other on the side of the same region 13a of the regions 13a and 13b adjacent to each other in the longitudinal direction of the base substrate 10.

[0072] 1 or 11(a) and 11(b), in the case where the end 14, 214, 314 has the sub-cut 11b, 211b, 311b facing the opposite side to the main cut 11a, 211a, 311a, a slit may be provided in the direction of the end 14, 214, 314 of the sub-cut 11b, 211b, 311b, away from the end 14, 214, 314. In this way, even if the peel detection label breaks at the end 14, 214, 314 of the sub-cut 11b, 211b, 311b when it is peeled from the adherend, for example, in cases where the base substrate is fragile, the break will be contained by the slit. In such a configuration, it is preferable that the slits extend in a direction intersecting the direction in which the ends 14, 214, 314 of the minor cuts 11b, 211b, 311b face, and that both ends face the major cuts 11a, 211a, 311a.

[0073] FIG. 12 is a diagram showing another embodiment of the cut provided in the label of the present invention, and shows a modified example of the slit 111 shown in FIG.

[0074] The cut provided on the peel detection label 101 shown in FIG. 8 may be, as shown in FIG. 12(a), one linear main cut 411a and two sub-cuts 411b extending in an arc from both ends of the main cut 411a. In this example, each of the arcs formed by the two sub-cuts 411b constitutes a portion of the circumference of a circle having a predetermined radius, as in the example shown in FIG. 8, but its length is longer than three-quarters of the circumference of the circle. As a result, in this example as well, an end 414 of the sub-cut 411b opposite the main cut 411a faces the main cut 411a in the short direction of the base substrate 10. Each of the two sub-cuts 411b is connected to both ends of the main cut 411a in a rounded curve. In addition, as in this example, when the secondary cut portion 411b is curved from the end of the primary cut portion 411a toward the first region 13a as an arc that forms part of the circumference of a circle, if the length of the arc is greater than half the circumference of the circle and less than three-quarters the circumference, it is easy to achieve the effect of avoiding tearing of the peel detection label while revealing the latent image pattern, as described above.

[0075] 12(b), the cut provided on the peel detection label 101 shown in FIG. 8 may have one linear main cut 511a and two sub-cuts 511b extending in an arc from both ends of the main cut 511a. In this example, each of the arcs formed by the two sub-cuts 511b is formed by joining together an arc region 512a that is part of the circumference of a circle having a first radius and an arc region 512b that is part of the circumference of a circle having a second radius that is shorter than the first radius. The arc regions 512a and 512b are joined together so that they curl in the same direction. One end of the arc region 512a is connected to an end of the main cut portion 511a, and the other ends of the arc regions 512a face each other. The length of the arc region 512b is half the circumference of a circle, so that end 514 of the minor cut portion 511b opposite the main cut portion 511a faces the short direction of the base material. Each of the two minor cut portions 511b is connected to both ends of the main cut portion 511a in a rounded curve. In this way, in this example, an arc is formed by joining portions of the circumferences of two circles with different radii.

[0076] 8 may have one main cut 611a and two sub-cuts 611b extending in an arc from both ends of the main cut 611a, as shown in FIG. 12(c). Each of the arcs formed by the two sub-cuts 611b in this example is formed by joining together an arc region 612a that is part of the circumference of a circle having a first radius and an arc region 612b that is part of the circumference of a circle having a second radius that is shorter than the first radius, as shown in FIG. 12(b). The arc regions 612a and 612b are joined together so that they curl in the same direction, as shown in FIG. 12(b). One end of arc region 612a is connected to an end of main cut portion 611a, and the other ends of arc region 612a face each other, and the length of arc region 612b is shorter than one-quarter of a circle, so that end 614 of minor cut portion 611b opposite main cut portion 611a faces toward main cut portion 611a in the short direction of the base material. Each of the two minor cut portions 611b is connected to both ends of main cut portion 611a in a rounded curve.

[0077] The cuts provided on the peel detection label 101 shown in FIG. 8 may also include one linear main cut 711a and two sub-cuts 711b extending in arcs from both ends of the main cut 711a, as shown in FIG. 12(d). Each of the arcs formed by the two sub-cuts 711b in this example constitutes a portion of the circumference of a circle having a predetermined radius, as shown in FIG. 8, and each sub-cut has a length equivalent to three-quarters of the circumference of the circle. Each of the two sub-cuts 711b in this example extends from both ends of the main cut 711a toward the second region 13b. The sub-cuts 711b are then curled toward the first region 13a, and are also curled in the first region 13a. The ends 714 of the sub-cuts 711b opposite the main cut 711a face each other in the short direction of the base substrate. Each of the two minor cutouts 711b is connected to both ends of the main cutout 711a in a rounded curve.

[0078] In this way, the minor incisions that make up the incision may extend from both ends of the main incision, draw an arc so that they curl toward the first region in the first region and face each other, and the end opposite the main incision may face the direction of extension of the main incision or the main incision side relative to that direction. Note that the arc is not limited to one that constitutes part of the circumference of a single circle, but also includes an arc formed by joining parts of the circumferences of multiple circles with different radii of curvature, as shown in Figures 12(b) and (c), or an arc that is curved so that it is convex on one side and forms a curved shape overall. [Explanation of symbols]

[0079] 1,101 Peel detection labels 2 boxes 3 Container part 4a,4b Lid 5 Unpacked part 6,106 latent image patterns 7,107 remaining area 10 Base material 11,111 slits 11a, 111a, 211a, 311a, 411a, 511a, 611a, 711a Main cutting section 11b, 111b, 211b, 311b, 411b, 511b, 611b, 711b Sub-cutting section 13a,13b area 14,114,214,314,414,514,614,714 End 115 Tip 20 Peeling layer 30 Adhesive layer 40 Release paper 512a,512b,612a,612b arc area

Claims

1. A label that reveals a latent image pattern when peeled off after being attached to an adherend, A base substrate; a release layer laminated on one surface of the base material in the shape of the latent image pattern; a colored adhesive layer laminated over the entire surface of the base substrate on which the release layer is laminated, covering the release layer; the base substrate, the release layer, and the colored adhesive layer have a cut that penetrates the base substrate, the release layer, and the colored adhesive layer; The incision is a main cut portion extending in a first direction; A label having two sub-cuts extending from each end of the main cut in a second direction perpendicular to the first direction toward the first area of a first area and a second area adjacent to each other via the main cut.

2. A label that reveals a latent image pattern when peeled off after being attached to an adherend, A base substrate; a release layer laminated on one surface of the base material in the shape of the latent image pattern; a colored adhesive layer laminated over the entire surface of the base substrate on which the release layer is laminated, covering the release layer; the base substrate, the release layer, and the colored adhesive layer have a cut that penetrates the base substrate, the release layer, and the colored adhesive layer; The incision is a main cut portion extending in a first direction; A label having two sub-cuts extending from both ends of the main cut, which draw an arc in a second direction perpendicular to the first direction between a first region and a second region adjacent to each other via the main cut, curling toward the first region in the first region and facing each other, and whose ends opposite the main cut face the first direction or the main cut toward the main cut with respect to the first direction.

Images