Tamper evident sealing structure and tamper evident sealing method

Abstract

To provide a tamper evident sealing structure which has a simple configuration, offers good redetachability from adherend without sacrificing its tamper detection function for detecting unauthorized opening.SOLUTION: A tamper evident sealing structure 1 is provided, comprising a first tamper evident label 2 to be adhered to ends of surfaces 4a, 4b of a pair of opening pieces constituting an opening portion 5 of an adherend 4, and a second tamper evident label 3 to be adhered to an upper surface 2c of the first tamper evident label 2 so as to straddle the opening portion 5 of the adherend 4.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an opening detection sealing structure provided for an opening portion of a box or the like, and an opening detection sealing method for forming the sealing structure. [Background technology]

[0002] Conventionally, the technology described in Patent Document 1 is known as an opening detection label. This opening detection label has a resin base sheet and an adhesive layer formed on the back surface of the base sheet, and the base sheet has an opening detection section made of a strip and a pair of attachment sections that are continuous with both sides of the opening detection section and have a wider portion than the opening detection section, and a display section having an opening detection pattern that changes according to the deformation of the opening detection section is formed at least on the surface of the opening detection section. With an opening detection label of this configuration, the presence or absence of tampering can be checked easily and reliably without variation depending on the person checking. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-035926 A Summary of the Invention [Problem to be solved by the invention]

[0004] Meanwhile, opening detection labels, which serve as security labels to detect whether or not there has been unauthorized opening (in other words, unintentional opening), can be broadly categorized into transferable labels, in which the opening indication information consisting of characters such as "VOID" remains on the adherend (in other words, is displayed, appears or manifested on the adherend), and non-transferable labels, in which the opening indication information remains on the opening detection label (in other words, is displayed, appears or manifested on the opening detection label itself).

[0005] Typically, tamper detection labels are used by adhering them to various adherends that can be opened and closed, such as boxes and lockers. In applications where the tamper detection label is used repeatedly on the adherend (i.e., the sealing and opening of the open part of one adherend is repeated), a removable label (e.g., a non-transferable label) is used as the tamper detection label. This is because, when a label that cannot be removed repeatedly (e.g., a transferable label) is used, the adhesive part (glue part) or the opening display information remains on the surface of the adherend, staining the adherend.

[0006] However, when a removable label is used as the tamper detection label, there is a problem that the tamper detection label may peel off after being affixed depending on the shape of the adherend, such as unevenness or curved surface, or compatibility with the material of the adherend surface.

[0007] On the other hand, if the adhesive strength of a removable label is increased so that it does not peel off easily after application, there is a problem that the removable property becomes poor and the adhesive layer (glue portion) remains on the surface of the adherend.

[0008] When using a removable label as an opening detection label, a non-transferable label is usually used. However, if the adherend is made of a low-polarity material such as polypropylene, or if the adherend has a large uneven surface, the adhesive strength of the label is low, and there is an issue that the opening indication information such as letters does not appear or appear in an easy-to-understand form when peeled off.

[0009] In one aspect, the present invention has been made to solve the above-mentioned problems when using an tamper detection label that can be removably attached to an adherend.

[0010] The object of the present invention is to provide an opening detection sealing structure and an opening detection sealing method that have a simple configuration, can satisfactorily realize re-peelability for an adherend, and do not impair the opening detection function for detecting unauthorized opening (in other words, unintentional opening). [Means for solving the problem]

[0011] The opening detection sealing structure according to the first aspect of the present invention is a first opening detection label attached to at least one end of a pair of surfaces constituting the opening portion of the adherend; a second opening detection label that is attached across the opening portion of the adherend and on the top surface of the first opening detection label; The first opening detection label is a transferable label that displays opening information on the adherend when it is peeled off from the adherend, a non-transferable label that displays opening information on the first opening detection label side when it is peeled off from the adherend, or a label that, when peeled off from the adherend, partially peels off from the adherend and partially remains on the surface of the adherend, The second tamper detection label is characterized in that it is composed of a non-transferable label that displays tamper-evident information on the second tamper detection label side when peeled off from the adherend.

[0012] A second aspect of the present invention is the opening detection seal structure according to the first aspect, The adhesive strength between the adherend and the first tamper detection label is greater than the adhesive strength between the upper surface of the first tamper detection label and the second tamper detection label.

[0013] A third aspect of the present invention is the opening detection seal structure according to the first aspect, The upper surface of the first tamper detection label is formed from a material that has superior removability to the material of the opened portion of the adherend.

[0014] A fourth aspect of the present invention is the opening detection seal structure according to the first aspect, The second label surface area of ​​the second tamper detection label is characterized in that it is the same range area as the first label surface area of ​​the first tamper detection label, or is included within the first label surface area.

[0015] A fifth aspect of the present invention is the opening detection seal structure according to the first aspect, The adhesive strength between the adherend and the first tamper detection label is 4 N / 25 mm or more, and the adhesive strength between the upper surface of the first tamper detection label and the second tamper detection label is less than 7 N / 25 mm.

[0016] A sixth aspect of the present invention is the opening detection seal structure according to the first aspect, At least the first tamper detection label is configured in the form of a large-area film on the adherend.

[0017] A seventh aspect of the present invention is the opening detection seal structure according to the first aspect, The adherend is characterized in that it is a delivery box used when delivering goods.

[0018] An eighth aspect of the present invention is A first step of attaching a first opening detection label to at least one end of a pair of surfaces constituting an opening portion of an adherend; and a second step of attaching or laminating a second opening detection label on the first opening detection label, The second opening detection label is disposed so as to span the opening portion of the adherend, The first opening detection label is a transferable label that displays opening information on the adherend when it is peeled off from the adherend, a non-transferable label that displays opening information on the first opening detection label side when it is peeled off from the adherend, or a label that, when peeled off from the adherend, partially peels off from the adherend and partially remains on the surface of the adherend, The second tamper detection label is characterized in that it is composed of a non-transferable label that displays tamper-evident information on the second tamper detection label side when peeled off from the adherend.

[0019] A ninth aspect of the present invention is the opening detection sealing method according to the eighth aspect, The adhesive strength between the adherend and the first tamper detection label is greater than the adhesive strength between the upper surface of the first tamper detection label and the second tamper detection label.

[0020] A tenth aspect of the present invention is the opening detection sealing method according to the ninth aspect, The adhesive strength between the adherend and the first tamper detection label is 4 N / 25 mm or more, and the adhesive strength between the upper surface of the first tamper detection label and the second tamper detection label is less than 7 N / 25 mm. Effect of the Invention

[0021] The present invention can provide an opening detection sealing structure and an opening detection sealing method that have a simple configuration and can satisfactorily achieve re-peelability for the adherend without compromising the opening detection function for detecting unauthorized opening (in other words, unintentional opening). [Brief description of the drawings]

[0022] [Figure 1] 1(a) to 1(d) are vertical cross-sectional views or plan views including an adherend for explaining an opening detection sealing structure and an opening detection sealing method according to an embodiment. [Diagram 2] FIG. 1 is a perspective view showing an opening detection seal structure according to an embodiment, in which the opening detection seal structure is provided on a box body having an opening portion that opens upward. [Diagram 3] 1 is a perspective view showing an example of an opening detection sealing structure provided on the opening portion of a delivery box. [Figure 4] 1 is a perspective view showing an example of a large-area opening detection sealing structure provided on the opening portion of a delivery box. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] Hereinafter, an embodiment of the opening detection sealing structure and the opening detection sealing method according to the present invention will be described with reference to the drawings. Note that each drawing is a schematic diagram for explaining the configuration of the present invention, and does not strictly represent the specific configuration of the opening detection sealing structure according to the present invention.

[0024] At present, a wide variety of configurations have been disclosed for transferable labels that leave opening indication information on the adherend when peeled off from the adherend (in other words, displayed, appearing, or manifested on the adherend), non-transferable labels that leave opening indication information on the tamper detection label when peeled off from the adherend (in other words, displayed, appearing, or manifested on the tamper detection label itself), and labels that partly peel off from the adherend when peeled off from the adherend (in other words, when attempting to peel off), while part (in other words, the remainder) remains on the surface of the adherend (also called "partially remaining labels"). Such transferable label, non-transferable label, and partially remaining label products can be appropriately adopted in a form that satisfies the purpose of the present invention. In addition, the materials described as the material and adhesive of the tamper detection label are merely examples, and the present invention is not limited to the following materials, etc.

[0025] In the description of this invention, "opening indication information" includes letters, symbols, figures, and various patterns (designs) such as "VOID" that appear on the adherend or on the label side (e.g., the re-peelable label side) when the label is peeled off from the adherend, as well as a part of the label that remains on the surface of the adherend as a result of the function and action of the label itself when the label is peeled off from the adherend, and refers to information for allowing a user to recognize that an unauthorized opening operation (in other words, an unintentional opening operation) has already been performed.

[0026] [First embodiment] Figure 1(a) is a diagram for explaining the opening portion of the adherend, Figure 1(b) is a diagram showing a first opening detection label affixed to each surface of a pair of opening pieces that make up the opening portion, in other words, to include the peripheral area of ​​the opening portion, Figure 1(c) is a diagram showing a second opening detection label affixed to the top surface of the first opening detection label so as to straddle the opening portion of the adherend, and Figure 1(d) is a plan view of Figure 1(c).

[0027] The basic configuration of the opening detection sealing structure 1 of this embodiment includes a first opening detection label 2 (2a, 2b) attached to the end portions of each of the surfaces 4a, 4b of a pair of opening pieces constituting the opening portion 5 of the adherend 4, and a second opening detection label 3 spanning the opening portion 5 of the adherend 4 and attached to the upper surface 2c of the first opening detection label 2 (2a, 2b).

[0028] The ends of the faces 4a, 4b of the opening piece include at least the portions near the edges (in other words, the rims) where the pair of opening pieces face each other, and are the portions surrounding the edges (in other words, the rims) where the pair of opening pieces face each other.

[0029] 1A and 1B show a procedure for providing an opening detection sealing structure 1 across an opening portion 5 formed on the upper portion of a rectangular parallelepiped cardboard box 6 shown in Fig. 2. In other words, the cardboard box 6 corresponds to an adherend 4.

[0030] The cardboard box 6 shown in Figure 2 has one surface 4a and the other surface 4b of a pair of opening pieces that constitute the opening portion 5 of the adherend 4, and an opening detection sealing structure 1 is formed across these surfaces 4a and 4b.

[0031] Here, the adhesive strength of the first opening detection label 2 to the adherend 4 is set to be equal to or greater than the adhesive strength between the upper surface 2c of the first opening detection label 2 and the second opening detection label 3, and is preferably set to be greater than the adhesive strength between the upper surface 2c of the first opening detection label 2 and the second opening detection label 3. This is set so that when the second opening detection label 3, which is composed of a re-peelable label (in other words, a label that is intended to be peeled off), is peeled off, the first opening detection label 2 adhered to the adherend 4 is not peeled off together with the second opening detection label 3. In other words, in normal use (in other words, use without unauthorized opening), the first opening detection label 2 is a label that is intended not to be peeled off, and only the second opening detection label 3 is intended to be peeled off.

[0032] Regarding the adhesive strength of the first opening detection label 2 and the adhesive strength of the second opening detection label 3, the adhesive strength between the adherend 4 and the first opening detection label 2 is set to 4 N / 25 mm, preferably 7 N / 25 mm or more, and more preferably 10 N / 25 mm or more, while satisfying the condition that the adhesive strength between the adherend 4 and the first opening detection label 2 is greater than or equal to (preferably greater than) the adhesive strength between the upper surface 2c of the first opening detection label 2 and the second opening detection label 3, and the adhesive strength between the upper surface 2c of the first opening detection label 2 and the second opening detection label 3 is set to 4 N / 25 mm or more and less than 7 N / 25 mm, preferably 4.5 N / 25 mm or more and less than 6.5 N / 25 mm, more preferably 4.5 N / 25 mm or more and less than 6 N / 25 mm, and even more preferably 5 N / 25 mm or more and less than 6.5 N / 25 mm. All adhesive strength measurements were based on the Lintec method (30 minutes after application) (for information on the Lintec method as a method for testing adhesive strength, see "(Reference) Lintec Method" at the end of this article).

[0033] In addition, when the first opening detection label 2 is a transferable label that leaves opening information on the substrate 4 when it is peeled off from the substrate 4, the adhesive strength of the first opening detection label 2 is determined not by the adhesive strength between the surface of the substrate 4 and the bottommost layer of the first opening detection label 2, but by the adhesive strength at the interface of the peel-off layer that leaves the opening information.

[0034] The first opening detection label 2 is composed of a transferable label in which the opening indication information remains on the adherend 4 when it is peeled off from the adherend 4 (in other words, it is displayed, appears, or manifested on the adherend side), a non-transferable label in which the opening indication information remains on the first opening detection label 2 when it is peeled off from the adherend 4 (in other words, it is displayed, appears, or manifested on the first opening detection label 2 itself), or a partial-remaining label in which part of it peels off from the adherend 4 when it is peeled off from the adherend 4 (in other words, when an attempt is made to peel it off) and part of it (in other words, the remainder) remains on the surface of the adherend 4.

[0035] On the other hand, the second opening detection label 3 is composed of a removable label that can be peeled off from the top surface 2c of the first opening detection label 2. The second opening detection label 3 is also composed of a non-transferable label in which the opening indication information remains on the second opening detection label 3 side when it is peeled off from the adherend 4 (in other words, it is displayed, appears, or manifested on the second opening detection label 3 itself).

[0036] That is, the first tamper detection label 2 is a label that is not intended to be peeled off during normal use (in other words, use that does not involve unauthorized opening), and the second tamper detection label 3 is a label that is intended to be peeled off and is configured as a re-peelable label on the upper surface of the first tamper detection label 2. Then, after the second tamper detection label 3 is peeled off during normal use, a new second tamper detection label 3 is prepared and affixed on the first tamper detection label, and the opened portion 5 of the adherend 4 is sealed anew, preventing unauthorized opening (in other words, unintentional opening).

[0037] The second opening detection label 3 is peeled off and replaced every time the package is opened, while the first opening detection label 2 is not peeled off and replaced. In this case, if the second opening detection label 3 is a transferable label or a partially remaining label, when the second opening detection label 3 is peeled off when the opened portion 5 is opened, the opening indication information will remain on the first opening detection label 2, and the first opening detection label 2 will no longer be usable as is. For this reason, the second opening detection label 3 is configured as a non-transferable label.

[0038] Furthermore, if the first opening detection label 2 is not a security label, when the first opening detection label 2 is peeled off and the opening portion 5 is opened while the second opening detection label 3 is still attached to the first opening detection label 2, it is not possible to detect that an unauthorized opening operation (in other words, an unintended opening operation) has already been performed. For this reason, it is preferable that the first opening detection label 2 is composed of a security label. For the first opening detection label 2, at least one of a transferable label, a non-transferable label, and a partially remaining label may be appropriately selected. Note that when the first opening detection label 2 is attached to each of the surfaces 4a, 4b of a pair of opening pieces constituting the opening portion 5 of the adherend 4, first opening detection labels 2 of different types may be used.

[0039] The top surface 2c of the first tamper detection label 2 is preferably formed from a material that provides better removability of the second tamper detection label 3 than the material of the surfaces 4a, 4b of the opening portion 5 of the adherend 4. An example of such a material is a synthetic resin layer that provides better removability from the adhesive layer on the side of the second tamper detection label 3 than the synthetic resin container or paper container that is the adherend 4. Generally, adherends 4 that have a rough surface, are made of non-polar materials such as polypropylene or polyethylene, or are combined with curved shapes tend to peel off easily, so a suitable material is used.

[0040] 1 to 4 are understood as an opening detection sealing method, the process shown in Fig. 1(a) and Fig. 1(b) corresponds to a first step of attaching a first opening detection label 2 to the ends of the surfaces 4a, 4b of a pair of opening pieces constituting the opening portion 5 of the adherend 4. The process shown in Fig. 1(b) and Fig. 1(c) is an example of a second step of attaching a second opening detection label 3 to the upper surface 2c of the first opening detection label 2. The second opening detection label 3 is then affixed so as to straddle the opening portion 5 of the adherend 4.

[0041] However, in this case, the second opening detection label 3 may be previously affixed or laminated on the first opening detection label 2, and the integrated body may be affixed so as to straddle the opened portion 5 of the adherend 4. In this case, the step of affixing or laminating the second opening detection label 3 on the first opening detection label 2 is carried out before the step of affixing the first opening detection label 2 to the surfaces 4a, 4b of the adherend 4. In other words, in this opening detection sealing method, the temporal order relationship between the first step relating to the first opening detection label 2 and the second step relating to the second opening detection label 3 is not limited.

[0042] In Fig. 1, in order to easily explain the opening detection sealing method according to this embodiment, a first opening detection label 2 is formed on an adherend 4, and then the second opening detection label 3 is stacked in order to form an opening detection sealing structure 1. As shown in Figs. 3 and 4, this type of use can be easily realized in a practical use in which the first opening detection label 2 is attached to the opening portion 5 of a delivery box 15 used for delivery, and then the second opening detection label 3 is attached on the first opening detection label 2, thereby widening the scope of use of the present invention. Examples of the delivery box 15 include container boxes made of polyolefins such as polypropylene and polyethylene, cooler boxes made of polystyrene foam, boxes made of various synthetic resins, and metal boxes.

[0043] 1 to 4, in order to make the drawings easier to understand, the second label surface area 13 of the second tamper detection label 3 is illustrated as being smaller than the first label surface area 12 of the first tamper detection label 2. However, a configuration in which the second label surface area 13 and the first label surface area 12 have the same area may also be used.

[0044] The first opening detection label 2 and the second opening detection label 3 usually have a surface substrate and an adhesive layer. Examples of materials that can be used to form the surface substrate of the first opening detection label 2 include a transferable label that leaves the opening indication information on the adherend 4 when peeled off from the adherend 4, a non-transferable label that leaves the opening indication information on the first opening detection label 2 side when peeled off from the adherend 4, and a partial remaining label that partly peels off from the adherend 4 when peeled off from the adherend 4 and partly remains on the surface of the adherend 4, and polyester can be used, for example.

[0045] Examples of materials that can be used to form the surface base material of the second tamper detection label 3 include polyester, polyolefin, polyurethane, acrylic urethane resin, and vinyl chloride.

[0046] The adhesive material constituting the adhesive layer of the first open detection label 2 can be, for example, an acrylic adhesive.

[0047] The adhesive material constituting the adhesive layer of the second tamper detection label 3 can be, for example, an acrylic adhesive, a rubber adhesive, a urethane adhesive, or a silicone adhesive.

[0048] In this way, with a configuration according to one example of this embodiment, a highly adhesive opening detection label (i.e., the first opening detection label 2) is first affixed to the adherend 4, and then a non-transferable label (i.e., the second opening detection label 3) is affixed on top of it, which has the advantage of making it possible to confirm fraudulent opening without relying on the adherend 4, and to peel off the opening detection label without contaminating the adherend 4.

[0049] Furthermore, by attaching a non-peeling security label (i.e., the first tamper detection label 2) in advance, it is possible to simultaneously prevent unintentional peeling of the removable security label (i.e., the second tamper detection label 3) and ensure good removable properties, without relying on the adherend 4. Furthermore, since the adherend 4 is not soiled, it is possible to reuse the adherend 4 without cleaning.

[0050] [Second embodiment] Next, a second embodiment will be described. 3 and 4 are diagrams for explaining the second embodiment. The second embodiment is characterized in that the box body is composed of a delivery box 15 having a lid part 7 and a box body part 8 which can be separated from each other, and the opening part 5 thereof is sealed with an opening detection sealing structure 1. The configuration shown in Figure 3 shows four opening detection sealing structures 1 provided around the periphery of the lid portion 7 (i.e., opening portion 5) so as to detect unauthorized opening (in other words, unintentional separation) of the lid portion 7 and the box body portion 8 of the box.

[0051] Furthermore, as shown in FIG. 4, the second opening detection label 3 constituting the opening detection sealing structure 1 can also be configured, for example, in a band-shaped (in other words, large-area) film shape so as to widely cover the opening portion 5.

[0052] In relation to this configuration, the first opening detection label 2 can be provided on the entire surface of the container such as the delivery box 15 of the adherend 4 within the range where the second opening detection label 3 comes into contact. As a variation of this case, a form in which the first opening detection label 2 is formed in advance on the entire surface of the delivery box 15 can be considered. Then, a form in which the second opening detection label 3 is partially attached to the position of the corresponding opening portion 5 of the box can be adopted as appropriate.

[0053] [Example] Specific examples will be described below, but the specific configurations of the present invention are not limited to the following examples.

[0054] The first tamper detection labels in the embodiment are two types of labels with the following product names (product numbers) manufactured by Lintec Corporation. The only difference between the two tamper detection labels is whether the surface is "poppy" or "glossy." (1) TE Poppy 50VOID PAT1 8LK (2) TE Gloss 50VOID PAT1 8LK

[0055] The specific configuration of "TE Keshi 50VOID PAT1 8LK" is as follows: (Application) Permanent adhesive type tamper proof label (text appearance / VOID type) (Product configuration) Surface substrate: vapor-deposited polyester film (silver-deposited, special type, surface-coated) Adhesive: Acrylic adhesive Release material: One-sided polylaminated glassine paper (blue) (Characteristic value) Surface substrate thickness: 50 (μm) (based on test method compliant with JIS C 2318) Release material thickness: 88 (μm) (based on test method compliant with JIS P 8118) Adhesive strength: 9.0 (N / 25mm) (according to the Lintec method, 30 minutes after application)

[0056] The second tamper detection label in the embodiment is a label with the product name (product number) "TP Seal C (NT) VOID" manufactured by Lintec Corporation. However, a wide variety of other security labels can be used.

[0057] The specific structure of the "TP Seal C(NT)VOID" is as follows: (Application) Removable tamper-proof label (text expression, VOID, non-transferable type) (Product configuration) Surface substrate: Special polyester film (transparent, surface coated) Adhesive: Special adhesive Release material: One-sided polylaminated glassine paper (blue) (Characteristic value) Surface substrate thickness: 38 (μm) (based on test method compliant with JIS C 2318) Release material thickness: 88 (μm) (based on test method compliant with JIS P 8118) Adhesive strength: 1.9 (N / 25mm) (according to the Lintec method, 30 minutes after application)

[0058] The main purpose of creating and evaluating the configurations of Examples 1 to 4 described below is to verify the relationship between the adhesive strength between the adherend and the first opening detection label, and between the first opening detection label and the second opening detection label, and to examine the effects of changing the size of the first opening detection label 2 and the second opening detection label 3.

[0059] Example 1 (1) Polypropylene (glossy) was used as the adherend. (2) "TE Keshi 50VOID PAT1 8LK" was used as the first tamper detection label to be affixed to the adherend. Two labels with adhesive strength of 10N / 25mm (according to the Lintec method, 30 minutes after application) and dimensions of 50mm x 50mm were used. (3) As the second tamper detection label to be affixed onto the first tamper detection label, a removable label was used, with an adhesive strength of 4 N / 25 mm (according to the Lintec method, 30 minutes after affixing) and a size of 100 mm x 50 mm. In the configuration of Example 1, the area of ​​the first opening detection label is the same as the area of ​​the second opening detection label. The adherend 4, the first opening detection label 2, and the second opening detection label 3 are arranged as shown in Fig. 3, specifically, in such a configuration that the opening detection seal structure 1 is provided around the periphery of the lid part 7 (i.e., the opening part 5) so that unauthorized opening and closing of the lid part 7 and the box body part 8 can be detected, thereby forming an opening and opening detection seal structure.

[0060] Example 2 (1) Polypropylene (glossy) was used as the adherend. (2) "TE Keshi 50VOID PAT1 8LK" was used as the first tamper detection label to be affixed to the adherend. Two labels with adhesive strength of 10N / 25mm (according to the Lintec method, 30 minutes after application) and dimensions of 50mm x 50mm were used. (3) As the second tamper detection label to be affixed onto the first tamper detection label, a removable label was used, with an adhesive strength of 4 N / 25 mm (according to the Lintec method, 30 minutes after affixing) and a size of 100 mm x 25 mm. In the configuration of Example 2, the area of ​​the first opening detection label is 1 / 2 the area of ​​the second opening detection label. An opening detection seal structure was formed in the same manner as in Example 1.

[0061] Example 3 (1) Polypropylene (matte) was used as the substrate. (2) "TE Keshi 50VOID PAT1 8LK" was used as the first tamper detection label to be affixed to the adherend. Two labels with an adhesive strength of 4N / 25mm (according to the Lintec method, 30 minutes after application) and a size of 100mm x 50mm were used. (3) As the second tamper detection label to be affixed onto the first tamper detection label, a removable label was used, with an adhesive strength of 4 N / 25 mm (according to the Lintec method, 30 minutes after affixing) and a size of 100 mm x 50 mm. In the configuration of Example 3, the area of ​​the first opening detection label is twice as large as the area of ​​the second opening detection label. An opening detection seal structure was formed in the same manner as in Example 1.

[0062] Example 4 (1) Polypropylene (glossy) was used as the adherend. (2) "TE Gloss 50VOID PAT1 8LK" was used as the first tamper detection label to be affixed to the adherend. Two labels with an adhesive strength of 10N / 25mm (according to the Lintec method, 30 minutes after application) and a size of 50mm x 50mm were used. (3) As the second tamper detection label to be affixed onto the first tamper detection label, a removable label was used, with an adhesive strength of 5N / 25mm (according to the Lintec method, 30 minutes after affixing) and a size of 100mm x 50mm. In the configuration of Example 4, the area of ​​the second opening detection label is the same as the area of ​​the first opening detection label. An opening detection seal structure was formed in the same manner as in Example 1.

[0063] In the above Examples 1 to 4, the following three evaluation experiments were carried out. [Peeling evaluation] The peeling evaluation is an evaluation of whether the second tampering detection label unintentionally peels off from the surface of the first tampering detection label after it is attached to an adherend. Specifically, for example, it was confirmed whether the second tampering detection label naturally lifts off from the surface of the first tampering detection label, creating a gap. The evaluation levels were as follows: A) No peeling of the second tamper detection label 24 hours after application: ○ B) Peeling of the second tamper detection label 24 hours after application: ×

[0064] [Removal evaluation] The re-peelability evaluation is an evaluation of the degree to which the second tamper detection label can be peeled off smoothly without leaving any adhesive layer (glue portion) of the second tamper detection label on the surface of the first tamper detection label when the second tamper detection label is peeled off from the surface of the first tamper detection label. The evaluation levels were as follows: A) Peeling was successful: ○ A) In some areas, re-peeling is insufficient: △ C) Poor re-peeling condition over the entire surface: ×

[0065] [Character expression evaluation] The character expression evaluation is an evaluation of the degree to which the opening indication information is well expressed on the second opening detection label when the second opening detection label is peeled off from the surface of the first opening detection label with a specified force. The evaluation levels were as follows: A) The tamper-evident information appears clearly and clearly on the second tamper-evident label: ○ B) Some of the information on the opened item is unclear: △ C) The display of opened information is not good overall: ×

[0066] The evaluation results are shown below.

[0067] [Table 1]

[0068] As can be seen from the above evaluation results, it was confirmed that the configurations of the examples showed good performance in each evaluation item of peeling evaluation, re-peeling evaluation, and character appearance evaluation, and that it was possible to provide an opening detection sealing structure and an opening detection sealing method that solved the problems of the conventional technology. It was also confirmed that there is no problem in practical use and in terms of the functionality of the security label even if the ratio of the sizes of the first label surface area 12 and the second label surface area 13 illustrated in Figure 1 is increased.

[0069] Although the present invention has been described above by way of examples of the embodiments, the technical scope of the present invention is not limited to the configurations described in the above embodiments. The technical scope of the present invention should be determined based on the claims, and it goes without saying that various modifications, additions to the configuration, or improvements can be made within the scope of the claims.

[0070] For example, in the above embodiment, the first opening detection label 2 is attached to both surfaces 4a, 4b of the pair of opening pieces constituting the opening portion 5 of the adherend 4, but the first opening detection label 2 may be attached to only one of the surfaces 4a, 4b of the pair of opening pieces constituting the opening portion 5 of the adherend 4. For example, if the adherend 4 is a delivery box 15 having a lid portion 7 and a box body portion 8 that are separable from each other, the first opening detection label 2 may be attached only to the box body portion 8, and the first opening detection label 2 may not be attached to the lid portion 7. In this case, although the second opening detection label 3 is directly attached to the lid portion 7, for example, only the lid portion 7 may be washed, or the lid portion 7 may be disposable.

[0071] (Reference) Lintec Act The details of the "Lintec Method" for testing adhesive strength are as follows: Testing machine: Load cell type tensile testing machine Peeling angle: 180° Peeling speed: 300mm / min Test environment: 23℃ 50%RH Test plate: Stainless steel plate *SUS304 polished finish (Surface polished with waterproof abrasive paper #360) Application pressure: 2kg rubber roller, 1 round trip Test start time: 30 minutes after application, 24 hours after application Reporting unit: N / 25mm In addition, the content of the "JIS Method for Adhesive Strength (JIS Z 0237 compliant, revised on December 21, 2009)" as a test method for adhesive strength is as follows: Testing machine: Load cell type tensile testing machine Peeling angle: 180° Peeling speed: 300mm / min Test environment: 23℃ 50%RH Test plate: Stainless steel plate *SUS304 BA finish (The surface is cold rolled and then bright heat treated.) Application pressure: 2x roll with 2kg rubber roller Test start time: within 1 minute of application Reporting unit: N / 10mm In other words, the "Lintec Method" as a test method for adhesive strength is the same as the "JIS Method for Adhesive Strength (JIS Z 0237 compliant, revised December 21, 2009)" in terms of the testing machine, peel angle, peel speed, and test environment, but differs in the way the stainless steel plate is finished, the application pressure, the test start time, and the reporting unit. [Explanation of symbols]

[0072] 1: Opening detection seal structure 2: First tamper detection label 2c: Top of the first tamper evident label 3: Second tamper detection label 4: Adherent 5: Opening part 12: First label surface area 13: Second label area 15: Delivery box

Claims

1. a first opening detection label attached to at least one end of a pair of surfaces constituting an opening portion of an adherend; a second opening detection label that is attached across the opening portion of the adherend and to an upper surface of the first opening detection label; The first opening detection label is a transferable label that displays opening information on the adherend when it is peeled off from the adherend, a non-transferable label that displays opening information on the first opening detection label side when it is peeled off from the adherend, or a label that, when peeled off from the adherend, partially peels off from the adherend and partially remains on the surface of the adherend, The second opening detection label is a non-transferable label that displays opening indication information on the second opening detection label side when peeled off from the adherend, in the opening detection sealing structure.

2. The tamper-evident seal structure according to claim 1 , wherein the adhesive strength between the substrate and the first tamper-evident label is greater than the adhesive strength between the top surface of the first tamper-evident label and the second tamper-evident label.

3. The opening detection seal structure according to claim 1 , wherein the upper surface of the first opening detection label is formed from a material that has superior removability to the second opening detection label compared to the material of the opening portion of the adherend.

4. The tamper-detectable seal structure according to claim 1 , wherein the second label surface area of ​​the second tamper-detectable label is the same range area as the first label surface area of ​​the first tamper-detectable label or is included within the first label surface area.

5. The opening detection seal structure of claim 2, wherein the adhesive strength between the substrate and the first opening detection label is 4 N / 25 mm or more, and the adhesive strength between the upper surface of the first opening detection label and the second opening detection label is less than 7 N / 25 mm.

6. The tamper-detectable seal structure according to claim 1 , wherein at least the first tamper-detectable label is configured in the form of a large-area film on the adherend.

7. The opening detection sealing structure according to claim 1 , wherein the adherend is a delivery box used for delivery.

8. A first step of attaching a first opening detection label to at least one end of a pair of surfaces constituting an opening portion of an adherend; and a second step of attaching or laminating a second tamper evident label on the first tamper evident label, The second opening detection label is disposed so as to span the opening portion of the adherend, The first opening detection label is a transferable label that displays opening information on the adherend when it is peeled off from the adherend, a non-transferable label that displays opening information on the first opening detection label side when it is peeled off from the adherend, or a label that, when peeled off from the adherend, partially peels off from the adherend and partially remains on the surface of the adherend, The second opening detection label is a non-transferable label that displays opening indication information on the second opening detection label side when peeled off from the adherend, in this opening detection sealing method.

9. The tamper detection sealing method according to claim 8 , wherein the adhesive strength between the adherend and the first tamper detection label is greater than the adhesive strength between the top surface of the first tamper detection label and the second tamper detection label.

10. The opening detection sealing method described in claim 9, wherein the adhesive strength between the substrate and the first opening detection label is 4 N / 25 mm or more, and the adhesive strength between the upper surface of the first opening detection label and the second opening detection label is less than 7 N / 25 mm.

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