Reclose labels, lids and packaging

Abstract

To provide a reclosable label, a lid body and a packaging body, allowing a confirmation on whether or not unauthorized opening has been conducted.SOLUTION: A reclosable label is to be adhered onto a support member having a take-out port for taking out a content, and can be opened and sealed again. The reclosable label includes a knob part to serve as a start point of opening; and a label body adjacent to the knob part in an opening direction. The label body includes at least one unauthorized opening confirmation part for confirming unauthorized opening other than opening at the knob part.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a reclose label, a lid, and a packaging body. [Background technology]

[0002] There is a technology for forming an access port by peeling off a label attached to an area where an access port should be formed in order to take out the contents from a package that contains the contents (see Patent Document 1). In such a package, the access port can be resealed by reattaching the label. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 10-24972 Summary of the Invention [Problem to be solved by the invention]

[0004] In a package whose outlet can be opened and resealed by peeling and reattaching a label, a tab is usually provided as a starting point for peeling the label, and it is assumed that the package is opened from the tab. In other words, opening from the tab is the correct method of opening. However, for example, when the package is displayed on a shelf as a product, a person may improperly peel off the label from a part other than the tab and improperly open the package before purchasing the product for the purpose of mischief or checking the contents contained therein.

[0005] An object of one aspect of the present invention is to provide a reclosure label, a lid, and a packaging body that are capable of checking whether or not tampering has occurred. [Means for solving the problem]

[0006] A reclosable label according to one aspect of the present invention is a reclosable label that is affixed to a support member in which an opening for removing a contained item is formed, and which allows the opening to be opened and resealed. The reclosable label has a tab that serves as the starting point for opening, and a label body that is adjacent to the tab in the opening direction, and at least one tamper-evident portion is formed in the label body to confirm tamper-evident opening other than opening from the tab.

[0007] A lid body according to another aspect of the present invention comprises a support member having a cut-out portion formed therein that defines a planned removal outlet portion to be an outlet for removing contents, and a reclosure label affixed to the support member, the reclosure label having a knob portion that serves as a starting point for opening, and a label body adjacent to the knob portion in the opening direction, the reclosure label being affixed to the support member such that the label body covers the cut-out portion, and the label body having at least one tamper-evident portion formed therein for confirming tamper-evident opening other than opening from the knob portion.

[0008] A packaging body according to yet another aspect of the present invention comprises a storage main body portion for removing a contained item, the storage main body portion having a cut portion formed on one side that defines a planned removal outlet portion to be an outlet for removing the contained item, and a reclosure label affixed to the storage main body portion, the reclosure label having a knob portion that serves as a starting point for opening and a label main body adjacent to the knob portion in the opening direction, the reclosure label being affixed to the storage main body portion such that the label main body covers the cut portion, and the label main body having at least one tamper-evident portion formed therein for confirming tamper-evident opening other than opening from the knob portion.

[0009] In the above-mentioned reclose label, lid and packaging body, a tamper evident portion is formed on the label body, so that if tamper evident opening is attempted from any portion other than the tab, it can be confirmed that such opening has been attempted.

[0010] In one embodiment of the reclosure label, lid, or package, the tamper evident portion is a score line having a first end and a second end opposite the first end, and at least one of the first end and the second end of the score line may not be located outside the label body further than a center of the score line.

[0011] In the above configuration, for example, if the tamper-evident portion is opened from the outside, a tear will occur from at least one of the first end and the second end toward the inside (or center) of the label body. Therefore, it is possible to confirm whether tampering has occurred by checking whether a tear has occurred.

[0012] In one embodiment of the lid or packaging body, the tamper evident portion may be formed outside the intermediate region between the removal outlet corresponding area in the label body corresponding to the removal outlet and the tab portion.

[0013] The middle region of the label body is a portion that is peeled off when the reclose label is opened properly starting from the tab. Therefore, by providing a tamper-evident portion outside the middle region, it is possible to confirm whether or not tamper-evident opening has been performed, and to prevent the reclose label from breaking at the tamper-evident portion when the reclose label is opened properly.

[0014] In one embodiment of the closure or package, the at least one tamper evident portion may include a first tamper evident portion, a second tamper evident portion, and a third tamper evident portion, the first tamper evident portion being located on an opposite side of the access port corresponding area to the tab portion, the second tamper evident portion being located on a side of the access port corresponding area, and the third tamper evident portion being located on a side of the access port corresponding area and on a side opposite the second tamper evident portion from the access port corresponding area. This allows for checking for tampering from a side of the access port corresponding area and from an opposite side of the access port corresponding area to the tab portion.

[0015] In one embodiment of the lid or packaging body, the at least one tamper evident portion is a perforation provided in a portion of the periphery of the outlet corresponding area in the label body other than the intermediate area between the outlet corresponding area and the tab, and where the breaking strength of the perforation is α and the adhesive strength between the label body and the support member is β, α / β may be 2 or less.

[0016] In the above configuration, for example, if the label is opened from the outside of the perforation line, a tear will occur from the perforation line toward the inside (or center) of the label body. Therefore, it is possible to confirm whether or not the label has been opened fraudulently by checking whether or not a tear has occurred.

[0017] In one embodiment of the lid or packaging body, the perforation may surround the area corresponding to the access opening with the intermediate area open.

[0018] This makes it possible to more reliably check whether or not there has been any unauthorized opening around the area corresponding to the removal port. The middle area of ​​the label body is the portion that is peeled off when the label is properly opened starting from the tab. Therefore, by forming the perforation so as to surround the area corresponding to the removal port with the middle area open, it is possible to prevent the reclose label from being torn from the unauthorized opening confirmation portion when the reclose label is properly opened and peeled off.

[0019] Another example of a packaging body according to another aspect of the present invention includes the above-mentioned reclose label or the above-mentioned lid body. Effect of the Invention

[0020] According to one aspect of the present invention, it is possible to provide a reclosure label, a lid, and a package that enable confirmation of whether or not unauthorized opening has occurred. [Brief description of the drawings]

[0021] [Figure 1] FIG. 1 is a perspective view of a package provided with a reclose label according to a first embodiment. [Diagram 2]FIG. 2 is a cross-sectional view taken along line II-II in FIG. [Diagram 3] FIG. 3 is a cross-sectional view of a package in which the reclosure label has been peeled off to form a dispensing opening. [Figure 4] FIG. 4 is a plan view of the cover according to the first embodiment. [Diagram 5] FIG. 5 is a diagram for explaining the layer structure of the base film of the lid shown in FIG. [Figure 6] FIG. 6 is a diagram for explaining the layer structure of the reclose label of the lid shown in FIG. [Figure 7] FIG. 7 is a plan view of the reclose label shown in FIG. [Figure 8] FIG. 8 is a diagram showing an example of the locations of multiple tamper evident units. [Figure 9] FIG. 9 is a diagram showing a tamper evident section. [Figure 10] Each of Figs. 10(a) to 10(d) is a diagram showing another example of the tamper-evident section. [Figure 11] FIG. 11 is a diagram for explaining the function of the tamper-evident unit. [Figure 12] Figure 12(a) is a photograph showing the vicinity of the tamper evident portion of a lid manufactured by bonding a reclosure label to a base film, and Figure 12(b) is a drawing showing a photograph of the state after the reclosure label shown in Figure 12(a) has been peeled off from the base film in the direction of the white arrow in Figure 12(a). [Figure 13] FIG. 13 is a plan view showing the base film and the reclose label prepared in Experimental Example 1. As shown in FIG. [Figure 14] FIG. 14 is a diagram showing the layout of seven tamper evident sections in Experimental Example 1. As shown in FIG. [Figure 15] 15(a) to 15(h) are diagrams for explaining the tamper-evident section employed in the first experimental example. [Figure 16] FIG. 16 is a diagram showing the arrangement of the tamper evident portion shown in FIG. 15(e) relative to the area corresponding to the removal opening. [Figure 17]FIG. 17 is a diagram showing the opening site employed in Experimental Example 1. [Figure 18] FIG. 18 is a table showing the experimental results of Experimental Example 1. [Figure 19] FIG. 19 is a table showing the experimental results of Experimental Example 1. [Figure 20] FIG. 20 is a plan view of the cover according to the second embodiment. [Figure 21] FIG. 21 is a diagram for explaining a perforation (tamper evident portion) in the second embodiment. [Figure 22] FIG. 22 is a diagram for explaining an example of a method for measuring breaking strength. [Figure 23] Figure 23(a) is a photograph showing the area near the perforation in a lid manufactured by bonding a reclose label to a base film, and Figure 23(b) is a drawing showing a photograph of the state after the reclose label shown in Figure 23(a) has been peeled off from the base film in the direction of the white arrow in Figure 23(a). [Figure 24] FIG. 24 is a plan view showing the base film and the reclose label prepared in Experimental Example 2. As shown in FIG. [Diagram 25] FIG. 25 is a table showing the experimental results of Experimental Example 2. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The same elements are given the same reference numerals. Duplicate explanations will be omitted. The dimensional ratios of the drawings do not necessarily match those in the description.

[0023] (First embodiment) Fig. 1 is a perspective view of a package having a reclose label according to one embodiment. Fig. 2 is a cross-sectional view taken along line II-II in Fig. 1. As shown in Figs. 1 and 2, the package 1 includes a container 3 for containing an object 2, and a lid 4 for closing an opening of the container 3. Examples of the object 2 include food, wet tissues, cosmetics, etc. Fig. 2 illustrates a sheet-like object 2, but the shape of the object 2 is not limited to a sheet-like shape.

[0024] The storage container 3 has a storage section 7 having a bottom wall 5 and a side peripheral wall 6 provided around the bottom wall 5, and a flange section 8 extending outward from the end of the side peripheral wall 6 opposite the bottom wall 5. In the first embodiment, the planar shape of the bottom wall 5 and the corresponding planar shape of the storage container 3 are rectangular as shown in FIG. 1. However, the planar shape of the storage container 3 may be circular, elliptical, polygonal, etc. The material of the storage container 3 may be any material that can be joined to the lid 4 and can appropriately store the contents 2. The storage container 3 is made of, for example, plastic.

[0025] The lid 4 is a member in which a reclosure label 20 is laminated on a base film (support member) 10. The base film 10 is joined to the flange portion 8 so as to close the opening of the storage container 3. The reclosure label 20 is attached to the base film 10 so as to enable the package 1 to be opened and resealed.

[0026] When removing the contained item 2 from the package 1, the reclosure label 20 is peeled off along an opening direction D1 that is preset (for example, indicated by printing) on ​​the package 1 while lifting a tab 21 of the reclosure label 20. As a result, an outlet 11 for removing the contained item 2 from the package 1 is formed in the base film 10, as shown in Fig. 3. Specifically, as the reclosure label 20 is peeled off, an area of ​​the base film 10 that will become the outlet 11 is pulled out as a film piece 12 toward the reclosure label 20, thereby forming the outlet 11.

[0027] In the first embodiment, in the opening direction D1, the end side of the reclosure label 20 and the film piece 12 opposite the opening end remains attached to the base film 10. Since the connection between the reclosure label 20 and the film piece 12 and the base film 10 in the state where this removal opening 11 is formed functions as a hinge, the removal opening 11 can be reliably resealed by reattaching the reclosure label 20 to the base film 10.

[0028] Hereinafter, for ease of explanation, the side of the tab 21 in the unsealing direction D1 will also be referred to as the front side, and the side opposite the tab 21 will also be referred to as the rear side.

[0029] The lid 4 will be further described with reference to Fig. 4. The lid 4 has a base film 10 and a reclose label 20.

[0030] The base film 10 is a film having a sealant layer on the side facing the storage container 3. The planar shape of the base film 10 may be the same as the planar shape of the storage container 3. In the first embodiment, the planar shape of the base film 10 is rectangular. In the first embodiment, the longitudinal length L1 of the base film 10 is, for example, 100 mm to 300 mm, and the transverse length L2 is, for example, 50 mm to 450 mm. In the planar view, the periphery of the base film 10 may extend outward beyond the periphery of the storage container 3 (the edge of the flange portion 8).

[0031] Unless otherwise specified, examples of various lengths and distances described below are based on the configurations of the base film 10 and the reclose label 20 in the first embodiment (particularly the configuration shown in FIG. 4).

[0032] The base film 10 has a cutout 13 that defines a planned outlet 14 that is to become the outlet 11. In a plan view, the cutout 13 has an open ring shape with a part of the rear side (the side opposite the gripping portion 21) open. The inside of the cutout 13 is the planned outlet 14 where the outlet 11 will be formed, and is also the part that will become the film piece 12.

[0033] The cutout portion 13 has a first region 131 extending in the opening direction D1, a second region 132 facing the first region 131 and parallel to the first region 131, a third region 133 connecting a front end of the first region 131 to a front end of the second region 132, a fourth region 134 extending from a rear end of the first region 131 toward the second region 132, and a fifth region 135 extending from a rear end of the second region 132 toward the first region 131. In the first embodiment, the opening direction D1 is the longitudinal direction of the base film 10 (or the reclose label 20).

[0034] The first to fifth regions 131-135 are lines that can form a film piece 12 when the reclose label 20 is peeled off from the base film 10. The first to fifth regions 131-135 may be cut lines that completely penetrate the base film 10 in the thickness direction, or may be cut lines that are half-penetrating (half-cut). The first to fifth regions 131-135 may be continuous cut lines or perforated lines. The first to fifth regions 131-135 can be formed, for example, by cutting with a blade.

[0035] In the first embodiment, the third region 133 is curved so as to be convex toward the front. The fourth region 134 has a parallel region parallel to the direction perpendicular to the opening direction D1, and is folded back toward the front from the end of the parallel region on the second region 132 side. Similarly, the fifth region 135 has a parallel region parallel to the direction perpendicular to the opening direction D1, and is folded back toward the front from the end of the parallel region on the first region 131 side. The parallel regions in the fourth region 134 and the fifth region 135 are located on the same straight line and correspond to the rear end of the cutout portion 13 (or the rear end of the take-out port 11). The lengths of the folded parts in the fourth region 134 and the fifth region 135 are the same. Therefore, the end 134a of the fourth region 134 and the end 135a of the fifth region 135 are located on the same straight line along the direction perpendicular to the opening direction D1. The end 134a is an end of the fourth region 134 opposite the rear end of the first region 131, and the end 135a is an end of the fifth region 135 opposite the rear end of the second region 132.

[0036] An example of length L3 of cut portion 13 in the opening direction D1 (corresponding to the length of take-out opening 11 in the opening direction D1) is 30 mm to 230 mm. Length L3 is the distance from the top of third region 133 (the portion located closest to the front end of base film 10) to the rear end of cut portion 13. The length L4 of the cut portion 13 in the direction perpendicular to the unsealing direction D1 is, for example, 30 mm to 130 mm. The length L4 is the distance between the first region 131 and the second region 132. The length L5 between the end 134a and the end 135a is, for example, 3 mm to 120 mm.

[0037] An example of the thickness of the base film 10 is 30 μm to 150 μm. As shown in Fig. 5, the base film 10 is a laminated film having a sealant layer 101 and a substrate 102 having a barrier property laminated on the sealant layer 101. Fig. 5 shows a portion of the base film 10 in the region A shown in Fig. 2.

[0038] The sealant layer 101 is a layer formed from low-density polyethylene, linear polyethylene, medium-density polyethylene, high-density polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-methyl methacrylate copolymer, ionomer, etc. In consideration of the processability and thermal stability of the material of the sealant layer, additives such as antioxidants, stabilizers, lubricants, antiblocking agents, antistatic agents, anti-fog agents, adhesion regulators, fillers, colorants, etc. may be added to the sealant layer as necessary.

[0039] The substrate 102 having barrier properties is, for example, a polyvinyl alcohol (PVA) film, which is a polyvinyl alcohol-based resin film, an ethylene-vinyl alcohol copolymer (EVOH) film and a polyvinylidene chloride-based resin film, such as an extrusion film of polyvinylidene chloride (PVDC) resin, or a K-coat film formed by coating various plastic films with polyvinylidene chloride. The substrate 102 may be a film on which silica, alumina, aluminum, or tin is vapor-deposited. The substrate 102 may be stretched.

[0040] The base film 10 may have another substrate on the substrate 102. Examples of the other substrates include a polyethylene terephthalate (PET) film, a biaxially oriented polypropylene (OPP: Oriented Polypropylene) film, a paper sheet, polybutylene terephthalate (PBT), a cellophane film, and the like.

[0041] In the base film 10 configured as described above, by peeling off the reclosure label 20, the inside of the cutout 13 is separated from the outside of the cutout 13. As a result, the inside part of the cutout 13 is pulled up together with the reclosure label 20 as the film piece 12, as shown in Fig. 3, and the removal opening 11 is formed in the base film 10. In other words, the package 1 is opened. Furthermore, by reattaching the reclosure label 20 to the base film 10, the film piece 12 closes the removal opening 11, and the package 1 is resealed.

[0042] The cut portion 13 has an open ring shape with a part open at the rear end side in the opening direction D1, so that the connection between the film piece 12 and the base film 10 is maintained. Therefore, the reclose label 20 is not completely separated from the base film 10, and there is a part corresponding to the hinge described with reference to Figure 3. Therefore, when the reclose label 20 is attached to the base film 10 again, it is easy to block the take-out opening 11.

[0043] The cutout 13 has a fourth region 134 and a fifth region 135 folded forward near the ends 134a and 135a. Thus, the length (e.g., length L5) of the film piece 12 in the direction perpendicular to the opening direction D1 at the connection portion between the film piece 12 and the base film 10 is shorter than the length L4 of the cutout 13 in the direction perpendicular to the opening direction D1. Therefore, the reclose label 20 in the opened state is prevented from being pulled back by the film piece 12. That is, the cutout 13 having the fourth region 134 and the fifth region 135 has a configuration that prevents the reclose label 20 from returning in the opened state.

[0044] In order to prevent the reclose label 20 from returning in this way, the length L5 may be set in consideration of, for example, the rigidity of the base film 10 and the reclose label 20, the size of the cut portion 13, and the like.

[0045] The reclose label 20 will be described with reference to Fig. 4 again. The reclose label 20 is a resealable label, and is attached to the base film 10 so that the package 1 can be opened and resealed. The reclose label 20 has a tab 21 and a label body 22. The reclose label 20 is a film having an adhesive layer on the base film 10 side, and an adhesive-blocking layer is formed on the area of ​​the adhesive layer that corresponds to the tab 21.

[0046] The gripping portion 21 is a portion of the reclose label 20 that the user grips with his / her fingers when opening or resealing the package 1. The gripping portion 21 is a portion that serves as a starting point for opening. The gripping portion 21 is a portion that includes one end of the reclose label 20 in an opening direction D1 that is preset in the package 1. In the first embodiment, the length of the gripping portion 21 in a direction perpendicular to the opening direction D1 (hereinafter referred to as the "width direction") is shorter than the length of the label body 22 in the width direction.

[0047] The label body 22 is a portion that covers the intended removal opening portion 14, and is adjacent to the tab portion 21 in the opening direction D1 and is integrated with the tab portion 21. In the first embodiment, the label body 22 has a rectangular shape in a plan view.

[0048] The length (length in the longitudinal direction) L6 of the reclosure label 20 along the opening direction D1 is, for example, 50 mm to 250 mm. The length L7 in the width direction of the reclose label 20 is, for example, 50 mm to 150 mm. Length L6 is the distance between the front end of tab 21 and the rear end of label body 22. Length L7 is the distance between both side edges of label body 22 (length in the short direction in the first embodiment).

[0049] An example of the thickness of the reclose label 20 is 65 μm to 120 μm. As shown in Fig. 6, the reclose label 20 is a laminate having an adhesive layer 201, a substrate 202 supporting the adhesive layer 201, a printed layer 203 laminated on the substrate 202, and a substrate 204 having a barrier property laminated on the printed layer 203. The laminate can be formed, for example, by lamination processing.

[0050] The adhesive layer 201 is a layer for attaching the reclose label 20 to the base film 10, and is formed of an adhesive. Examples of adhesives include solvent-type, emulsion-type, or solventless (oligomer-type, hot melt-type) acrylic ester copolymer adhesives, solvent-type or hot melt-type adhesives obtained by blending a tackifier resin with natural rubber or synthetic rubber, calendar coating adhesives, silicone-based adhesives, liquid curing adhesives obtained by blending a tackifier resin with a polyether or diene-based oligomer, and other adhesives. Examples of the substrate 202 include an OPP film, a paper sheet, and a PET film. The printing layer 203 is a layer obtained by performing printing processing on a printing substrate. The printing substrate is, for example, a plastic resin film with good printability, such as a PET film or a polyamide film. For example, a pattern, an arrow indicating the opening direction D1, etc. are printed on the printing layer 203. Examples of the substrate 204 having barrier properties are similar to those of the substrate 102 . Here, the printed layer 203 has been described as a layer obtained by subjecting a printing substrate to a printing process as described above, but for example, the substrate 202 or the substrate 204 may be subjected to a printing process.

[0051] As shown in FIG. 6, a glue-killing layer 205 is formed on the adhesive layer 201 in the gripping portion 21. The glue-killing layer 205 is formed of varnish or the like. This makes the gripping portion 21 non-adhesive. The glue-killing layer 205 can be formed by subjecting the adhesive layer 201 to a glue-killing treatment. The glue-killing treatment is a treatment for partially sealing the adhesive force, and examples of the glue-killing treatment include a treatment for printing ink, varnish, or the like on the adhesive layer.

[0052] The reclosable label 20 will be further described with reference to Fig. 7. For ease of explanation, the area of ​​the label body 22 corresponding to the outlet 11 (the area facing the outlet 11 or the intended outlet section 14) will be referred to as the outlet corresponding area 25. The outlet corresponding area 25 is the portion that overlaps with the intended outlet section 14 in a plan view of the label body 22. In Fig. 7, the outlet corresponding area 25 is illustrated by surrounding it with a solid line.

[0053] [Tamper-evident section] The reclose label 20 (specifically, the label body 22) has at least one tamper-evident portion 23. In the first embodiment, as shown in FIG. 7, a case will be described in which the reclose label 20 has seven tamper-evident portions 23. The tamper-evident portion 23 is disposed outside the removal opening corresponding area 25 in the label body 22. The tamper-evident portion 23 in the first embodiment is formed in an area of ​​the label body 22 other than the intermediate area 26 between the tab 21 and the removal opening corresponding area 25. The intermediate area 26 is an area surrounded by two straight lines 26a (straight lines shown by dashed lines in FIG. 7) that pass through both ends of the tab 21 and are parallel to the opening direction D1, the tab 21, and the removal opening corresponding area 25.

[0054] When distinguishing between the seven tampering confirmation units 23, the seven tampering confirmation units 23 may be referred to as tampering confirmation unit (first tampering confirmation unit) 23A, tampering confirmation unit (second tampering confirmation unit) 23B, tampering confirmation unit (third tampering confirmation unit) 23C, tampering confirmation unit 23D, tampering confirmation unit 23E, tampering confirmation unit 23F and tampering confirmation unit 23G.

[0055] Tamper evidential section 23A and tamper evidential section 23B are located on the sides of outlet corresponding area 25. Tamper evidential section 23B is located on the opposite side of outlet corresponding area 25 to tamper evidential section 23A. The tamper evident portion 23C is located on the opposite side of the tab portion 21 from the area 25 corresponding to the removal opening. Tamper evident portion 23D is located between middle area 26 and tamper evident portion 23A. Tamper-evident unit 23E is located between tamper-evident unit 23A and tamper-evident unit 23C. Tamper-evident unit 23F is located between tamper-evident unit 23C and tamper-evident unit 23B. Tamper evident portion 23G is located between middle area 26 and tamper evident portion 23B.

[0056] Therefore, when the reclosure label 20 is viewed in a plane, the seven tamper-evident sections 23 are arranged around the removal outlet corresponding area 25 (planned removal outlet section 14) in a clockwise direction from the intermediate area 26, in the following order: tamper-evident section 23D, tamper-evident section 23A, tamper-evident section 23E, tamper-evident section 23C, tamper-evident section 23F, tamper-evident section 23B and tamper-evident section 23G.

[0057] With reference to Fig. 8, an example of the arrangement of the seven tamper-evident units 23 will be described in more detail. As shown in Fig. 8, a quadrangle Q (rectangle in Fig. 8) is assumed with the outlet corresponding area 25 touching the inside. A straight line passing through the central part 25a (the center of the quadrangle Q) of the outlet corresponding area 25 and parallel to the opening direction D1 is the center line C1. A straight line passing through the central part 25a and perpendicular to the center line C1 is referred to as the line C2. The two diagonals of the quadrangle Q are referred to as the diagonal lines C3 and C4. An example of the arrangement of the seven tamper-evident units 23 in this case is as follows:

[0058] Tamper-evident section 23A and tamper-evident section 23B are disposed on either side of outlet corresponding area 25 on line C2. The tamper evident portion 23C is located on the opposite side of the center line C1 from the tab portion 21 when viewed from the removal opening corresponding area 25. Tamper-evident portion 23D is located on diagonal line C3 between center line C1 (or middle area 26 shown in FIG. 7) and tamper-evident portion 23A. Tamper-evident unit 23E is disposed between tamper-evident unit 23A and tamper-evident unit 23C on diagonal line C4. Tamper-evident unit 23F is disposed between tamper-evident unit 23C and tamper-evident unit 23B on diagonal line C3. Tamper-evident portion 23G is located between tamper-evident portion 23B and center line C1 (or middle region 26 shown in FIG. 7) on diagonal line C4.

[0059] The tamper evident portion 23 will be further described with reference to Fig. 9. The tamper evident portion 23 is a cut line having a first end 23a and a second end 23b. The tamper evident portion 23 may be a cut line that passes all the way through the thickness of the reclose label 20, or may be a cut line that passes only halfway through (half cut). The tamper evident portion 23 may be formed, for example, by cutting with a blade.

[0060] The tamper-evident portion 23 is formed such that both the first end 23a and the second end 23b are not located outside the center 23c of the tamper-evident portion 23 (on the edge side of the label body 22).

[0061] The placement condition that "neither the first end 23a nor the second end 23b is located outside the center 23c of the tamper-evident portion 23 (on the edge side of the label body 22)" satisfies, for example, the following placement condition.

[0062] <Placement conditions> As shown in Fig. 9, a straight line VL1 is assumed to connect the central portion 25a (see Fig. 8) of the removal port corresponding area 25 and the central portion 23c of the tamper-evident portion 23, and a straight line VL2 is assumed to be perpendicular to the straight line VL1 and to pass through the central portion 23c. In this case, neither the first end portion 23a nor the second end portion 23b is positioned outside the straight line VL2 (on the opposite side to the central portion 25a).

[0063] The straight line VL1 corresponds to, for example, the center line C1, the straight line C2, the diagonal line C3, or the diagonal line C4 shown in FIG.

[0064] Unless otherwise specified, the tamper-evident portion 23 in the first embodiment is formed in a state that satisfies the above-mentioned arrangement conditions.

[0065] In the embodiment shown in FIG. 9, the shape of the tamper-evident portion 23 is an arc with the central portion 23c located at the outermost position in the tamper-evident portion 23. Therefore, in the arc-shaped tamper-evident portion 23, the first end 23a and the second end 23b are located closer to the access opening corresponding area 25 than the central portion 23c. When the tamper-evident portion 23 is arc-shaped, an example of the radius of curvature of the arc is 0.5 mm or more and 50 mm or less. An example of the length d1 between the first end 23a and the second end 23b is 2 mm or more and 25 mm or less.

[0066] The shape of the tamper-evident portion 23 may be linear as shown in FIG. 10(a). FIG. 10(a) shows a case where the linear tamper-evident portion 23 is arranged along a straight line VL2. The length d2 between the first end 23a and the second end 23b of the linear tamper-evident portion 23 may be the same as the example of the length d1 shown in FIG. 9. As shown in FIG. 10(b), the linear tamper-evident portion 23 may be arranged inclined at an angle θ1 with respect to the straight line VL1. The angle θ1 is an angle greater than 0° and less than 90° or greater than 90° and less than 180°.

[0067] The shape of the tamper-evident portion 23 may be U-shaped with the first end 23a and the second end 23b bent toward the center of the label (toward the central portion 25a) as shown in FIG. 10(c). The tamper-evident portion 23 shown in FIG. 10(c) has a straight portion 231 along the straight line VL2 and a side portion 232 bent from both ends of the straight portion 231 toward the central portion 25a. In the form shown in FIG. 10(c), the side portion 232 is perpendicular to the straight portion 231 and parallel to the straight line VL1. An example of the length d3 between the first end 23a and the second end 23b may be the same as the example of the length d1 shown in FIG. 9. An example of the length d4 of the side portion 232 is 0.2 mm or more and 25 mm or less. The angle between the straight portion 231 and the side portion 232 is not limited as long as both the first end 23a and the second end 23b are not positioned outside the straight line VL2.

[0068] The shape of the tamper-evident portion 23 may be a V-shape bent at the center portion 23c as shown in FIG. 10(d). An example of the length d5 ​​between the first end portion 23a and the second end portion 23b may be the same as the example of the length d1 shown in FIG. 9. An example of the angle θ2 between the straight portion between the center portion 23c and the first end portion 23a and the straight portion between the center portion 23c and the second end portion 23b is 1° or more and 180° or less (or less than 180°). The bending position in the V-shaped tamper-evident portion 23 is not limited to the position of the center portion 23c.

[0069] In a package 1 equipped with a reclosure label 20, the correct method of opening is to peel off the reclosure label 20 from the tab 21 in the opening direction D1. Therefore, as shown in Fig. 11, when the package 1 is opened by peeling off the reclosure label 20 from the side of a tamper-evident part 23 (Fig. 11 shows a case where the tamper-evident part 23 is tamper-evident part 23A) arranged in a position different from the tab 21, toward the removal opening corresponding area 25 in the opening direction D2, such opening is illegal.

[0070] The tamper evident portion 23 is a score line. In the tamper evident portion 23, neither the first end 23a nor the second end 23b is located outside the central portion 23c. In this configuration, when tamper evident portion 23 is tamper evident along the opening direction D2, a break occurs from at least one of the first end 23a and the second end 23b along the opening direction D2 to the removal opening corresponding area 25, and such a break causes a loss of the resealing function.

[0071] A specific description will be given with reference to Fig. 12(a) and Fig. 12(b). Fig. 12(a) and Fig. 12(b) are drawings showing the results of peeling performed on a prototype lid body 4. Fig. 12(a) is a drawing showing a photograph showing the vicinity of the tamper-evident portion 23 in the lid body 4 manufactured by bonding the reclose label 20 to the base film 10. The tamper-evident portion 23 shown in Fig. 12(a) was an arc-shaped portion similar to that in Fig. 9. Fig. 12(b) is a drawing showing a photograph of the state after the reclose label 20 shown in Fig. 12(a) was peeled from the base film 10 in the direction of the white arrow in Fig. 12(a). When the reclose label 20 was peeled from the vicinity of the tamper-evident portion 23 shown in Fig. 12(a), a break occurred from the portion of the tamper-evident portion 23 toward the center of the label (the cut portion 13 side) as shown in Fig. 12(b), and the break caused the label to deform into a state in which resealing was impossible.

[0072] In this way, by forming the tamper-opening confirming portion 23 on the reclosure label 20, if the package is opened tamper-evidently from a location other than the tab 21, a rupture mark will be left from the tamper-opening confirming portion 23 to the removal opening corresponding area 25, and the rupture will cause the reclosure label 20 to deform to a state where resealing is impossible. Therefore, it is possible to reliably confirm that tamper-opening has been performed from a location other than the tab 21. Therefore, by forming the tamper-opening confirming portion 23 on the reclosure label 20, tamper-opening from a location other than the tab 21 can be prevented.

[0073] When the reclosure label 20 has multiple tamper-evident sections 23, the number of positions where it is possible to check whether tampering has occurred increases. As a result, the rate at which tampering can be confirmed increases, and the effect of preventing tampering increases. When the reclosure label 20 has three tamper-evident sections, 23A, 23B, and 23C, it is easy to check tampering from the side and rear of the outlet corresponding area 25. When the reclosure label 20 has tamper-evident sections 23D, 23E, 23F, and 23G in addition to the tamper-evident sections 23A, 23B, and 23C, it is even easier to check whether tampering has occurred from the periphery of the outlet corresponding area 25. It is even easier to check tampering if the tamper-evident section 23 is formed closer to the outlet corresponding area 25.

[0074] The middle region 26 is a portion that is peeled off in a normal opening starting from the tab 21. Therefore, in a configuration in which the tamper-evident portion 23 is formed outside the middle region 26, it is possible to confirm whether or not tamper-evident opening has been performed, and it is possible to prevent the reclosure label 20 from breaking at the tamper-evident portion 23 when it is peeled off by a normal opening method.

[0075] The shape of tamper evident portion 23 and its positional relationship with respect to removal opening corresponding area 25 may be modified in various ways without departing from the spirit of the present invention.

[0076] Next, a description will be given of Experimental Example 1 regarding the lid body 4. In Experimental Example 1, for the sake of convenience, the same elements as those of the base film 10 and the reclose label 20 described in the first embodiment are given the same reference numerals, and duplicated descriptions will be omitted.

[0077] In the experimental example 1, the base film 10 and the reclose label 20 shown in FIG. 13 were used.

[0078] <Base film> The base film 10 was a laminated film in which a PET film was laminated onto a multi-layer barrier anti-fog sealant layer via a dry lamination adhesive.

[0079] The multi-layer barrier anti-cloud sealant layer was made of "Diamilon V441" manufactured by Mitsubishi Chemical Corporation. The thickness of the multi-layer barrier anti-cloud sealant layer was 60 μm. The multi-layer barrier anti-cloud sealant layer was a laminated film of a nylon (NY) film, an ethylene-vinyl alcohol copolymer (EVOH) film, and an ethylene propylene copolymer film with an anti-clouding agent added. The PET film used was "Ester E5102" manufactured by Toyobo Co., Ltd. The thickness of the PET film was 12 μm. The dry lamination adhesive used was an adhesive containing "TM242A" manufactured by Toyo-Morton Co., Ltd. as a base agent and "TM242B" manufactured by Toyo-Morton Co., Ltd. as a curing agent.

[0080] The base film 10 had a rectangular shape in plan view. The length L1 of the base film 10 in the longitudinal direction was 259 mm, and the length L2 in the lateral direction was 127 mm.

[0081] The cut portion 13 was formed in the base film 10 by cutting with a blade. The cut portion 13 was a perforated line. The position of the center line (the center line along the longitudinal direction) of the cut portion 13 coincided with the center line of the base film 10. The cut portion 13 was symmetrical with respect to the center line of the cut portion 13.

[0082] The cut portion 13 had the first to fifth regions 131 to 135 described in the first embodiment. The third region 133 was curved so as to be convex forward. The rear end sides of the first region 131 and the second region 132 were bent inward as shown in FIG. 13. The fourth region 134 and the fifth region 135 had the parallel region (region parallel to a direction perpendicular to the opening direction D1) described in the first embodiment, and were folded back forward at the end 134a side and the end 135a side.

[0083] For ease of explanation, the portion of the third region 133 closest to the front end of the base film 10 will be referred to as the top of the third region 133, and the parallel region in the fourth region 134 (or the fifth region 135) will be referred to as the rear end of the cutout portion 13.

[0084] The length L3 of the cut portion 13 in the longitudinal direction was 171 mm. The length L4 of the cut portion 13 in the short direction was 83 mm. The length L5 between the end 134a and the end 135a was 23 mm.

[0085] <Reclose label> A laminate in which a KOP film was laminated on a tack label via an ultraviolet-curing adhesive (UV adhesive) was used as the reclose label 20. A glue-blocking layer was laminated on the adhesive layer side at one end of the tack label to form a tab 21. The tack label used was "CL BOPP / R1490" manufactured by Avery Dennison Japan Co., Ltd. The tack label had an acrylic adhesive layer (thickness: approximately 25 μm) formed on the base material OPP film (thickness: 50 μm). The KOP film used was "Senesi KOP 1000" manufactured by Daicel Value Coating Co., Ltd. The thickness of the KOP film was 20 μm. The UV adhesive used was "Acritac L315" manufactured by No Tape Industrial Co., Ltd. The adhesive-blocking layer was formed by applying "UV Peel-Off OP Varnish" manufactured by T&K TOKA Corporation onto the adhesive layer of the tack label.

[0086] The reclose label 20 had a tab 21 and a label body 22. The length L6 of the reclose label 20 in the longitudinal direction was 204 mm. The length L7 of the reclose label 20 in the direction perpendicular to the opening direction D1 (width direction) was 103 mm.

[0087] The tab 21 was positioned so that the center of the tab 21 in the width direction coincided with the center line C1 of the label body 22 (or the reclose label 20). The length L8 of the tab 21 in the width direction was 73 mm.

[0088] The label body 22 had a rectangular shape in plan view. The label body 22 had a length L9 in the longitudinal direction of 193 mm.

[0089] The reclosure label 20 had seven tamper-evident portions 23. That is, the reclosure label 20 had tamper-evident portions 23A, tamper-evident portions 23B, tamper-evident portions 23C, tamper-evident portions 23D, tamper-evident portions 23E, tamper-evident portions 23F, and tamper-evident portions 23G. Each tamper-evident portion 23 was a cut line that completely penetrated the label body 22 in the thickness direction. Each tamper-evident portion 23 was formed by cutting with a blade.

[0090] The seven tamper-evident sections 23 are arranged in the order of tamper-evident section 23D, tamper-evident section 23A, tamper-evident section 23E, tamper-evident section 23C, tamper-evident section 23F, tamper-evident section 23B, and tamper-evident section 23G around the outlet corresponding area 25 (intended outlet section 14) in a clockwise direction from the middle area 26 when the reclosure label 20 is viewed in a plan view. The seven tamper-evident sections 23 were arranged on the center line C1, the straight line C2, the diagonal line C3, and the diagonal line C4, as described with reference to FIG. 8.

[0091] The layout of the seven tamper-evident units 23 in Experimental Example 1 will be described with reference to Figure 14. The removal port corresponding area 25 is also indicated by a solid line in Figure 14. In the following description, the straight line VL1 corresponds to the center line C1, the straight line C2, the diagonal line C3, and the diagonal line C4, depending on where the tamper-evident unit 23 is located.

[0092] The tampering confirmation unit 23A and the tampering confirmation unit 23B were disposed on the straight line C2 to the side of the outlet corresponding area 25. The central parts 23c of the tampering confirmation unit 23A and the tampering confirmation unit 23B were located on the straight line C2. The tampering confirmation unit 23B was disposed on the opposite side of the outlet corresponding area 25 to the tampering confirmation unit 23A. The tamper-evident portion 23C was located on the center line C1 on the opposite side of the tab 21 from the removal opening corresponding area 25. The central portion 23c of the tamper-evident portion 23C was located on the center line C1. The tamper-evident portion 23D was disposed on the diagonal line C3 between the middle area 26 and the tamper-evident portion 23A. The center portion 23c of the tamper-evident portion 23D was located on the diagonal line C3. The tampering confirming unit 23E was disposed on the diagonal line C4 between the tampering confirming unit 23A and the tampering confirming unit 23C. The center portion 23c of the tampering confirming unit 23E was located on the diagonal line C4. Tamper-evident section 23F was disposed between tamper-evident section 23C and tamper-evident section 23B on diagonal line C3. Center section 23c of tamper-evident section 23F was located on diagonal line C3. Tamper-evident portion 23G was disposed on diagonal line C4 between tamper-evident portion 23B and middle area 26. Center portion 23c of tamper-evident portion 23G was located on diagonal line C4.

[0093] In the experimental example 1, the experiment was carried out using the eight tamper-evident units shown in FIG. 15(a) to FIG. 15(h) as the tamper-evident unit 23.

[0094] The tamper-evident portion 23_1 shown in FIG. 15(a) was the linear tamper-evident portion 23 shown in FIG. 10(a). The length d2 between the first end 23a and the second end 23b was 10 mm. The tamper-evident portion 23_1 was disposed so as to be perpendicular to the straight line VL1 as described with reference to FIG. 10(a).

[0095] The tamper-evident portion 23_2 shown in FIG. 15(b) was the arc-shaped tamper-evident portion 23 shown in FIG. 9. The tamper-evident portion 23_2 was disposed such that the first end 23a and the second end 23b were located closer to the center of the label than the central portion 23c. The curvature of the arc was 10 mm. The length d1 between the first end 23a and the second end 23b was 10 mm.

[0096] The tamper-evident portion 23_3 shown in FIG. 15(c) was the U-shaped tamper-evident portion 23 shown in FIG. 10(c). The tamper-evident portion 23_3 had a straight portion 231 and a side portion 232 as described with reference to FIG. 10(c). The straight portion 231 had a length d4 of 10 mm. The side portion 232 had a length d5 ​​of 3 mm. The straight portion 231 and the side portion 232 were perpendicular to each other. The tamper-evident portion 23_3 was positioned such that the first end 23a and the second end 23b were located closer to the center of the label than the center portion 23c.

[0097] The tamper-evident portion 23_4 shown in FIG. 15(d) was the V-shaped tamper-evident portion 23 shown in FIG. 10(d). The tamper-evident portion 23_4 had a shape bent at the center portion 23c as described with reference to FIG. 10(d). The length d5 ​​between the first end portion 23a and the second end portion 23b was 10 mm. The angle θ2 was 120°. The tamper-evident portion 23_4 was disposed such that the first end portion 23a and the second end portion 23b were located closer to the center of the label than the center portion 23c.

[0098] The tamper-evident portion 23_5 shown in FIG. 15(e) corresponds to the tamper-evident portion 23_1 shown in FIG. 15(a) inclined with respect to the straight line VL1 as described with reference to FIG. 10(b). The angle θ1 between the straight line VL1 and the tamper-evident portion 23_5 was 75°. The arrangement of the seven tamper-evident portions 23_5 with respect to the removal opening corresponding area 25 was as shown in FIG. 16.

[0099] The tamper-evident section 23_6 shown in Figure 15(f) is the inverted version of the tamper-evident section 23_2 shown in Figure 15(b) with the first end 23a and the second end 23b positioned on the outside of the label.

[0100] The tamper-evident section 23_7 shown in Figure 15(g) is the tamper-evident section 23_3 shown in Figure 15(c) inverted so that the first end 23a and the second end 23b are positioned on the outside of the label.

[0101] The tamper-evident section 23_8 shown in FIG. 15(h) is the inverted version of the tamper-evident section 23_4 shown in FIG. 15(d) so that the first end 23a and the second end 23b are positioned on the outside of the label.

[0102] In experimental example 1, the lid 4 shown in Fig. 13 was produced by bonding the reclose label 20, on which the tamper-evident portions 23_1 to 23_8 shown in Fig. 15(a) to 15(h) were formed, to the base film 10. In the lid 4 of experimental example 1, the distance L10 between the cut portion 13 and the side edge of the label main body 22 was 10 mm, and the distance L11 between the rear end of the cut portion 13 and the rear end of the reclose label 20 was 10 mm.

[0103] Using the produced lid 4, an opening test was conducted from a position other than the tab 21. In the opening test, in order to confirm the effects of each of the tamper-evident portions 23D, 23A, 23E, 23C, 23F, 23B, and 23G, the reclose label 20 was peeled off from the base film 10 toward the center 25a from the corresponding opening positions, i.e., opening positions X1, X2, X3, X4, X5, X6, and X7 shown by white arrows in Fig. 17. The area 25 corresponding to the take-out opening is also shown by a solid line in Fig. 17.

[0104] The results of the opening test were evaluated based on whether the lid 4 was opened in the following opening mode a or opening mode b. [Opening mode a] When the reclosure label 20 was peeled off, a break occurred from at least one of the first end 23a and the second end 23b of the tamper-evident portion 23 toward the area corresponding to the removal opening 25, and the resealing function of the reclosure label 20 was lost. [Opening mode b] When the reclosure label 20 was peeled off, no breakage occurred from the first end 23a and the second end 23b of the tamper-evident portion 23 toward the area corresponding to the removal opening 25, and the resealing function of the reclosure label 20 was maintained.

[0105] In the experimental example 1, the reclose label 20 having the tamper-evident portion 23_1 was subjected to an opening test from different opening positions five times. The same opening test was also performed on the reclose labels 20 having the tamper-evident portions 23_2 to 23_8. A new lid 4 was prepared for each opening test. The test results were as shown in the tables in Figs. 18 and 19.

[0106] 18 and 19, the column "tamper-evident unit" indicates the tamper-evident unit 23 used in the opening test. Specifically, it is as follows. Straight type: tamper evident part 23_1 shown in FIG. 15(a) Arc-shaped: tamper-evident part 23_2 shown in FIG. 15(b) U-shaped: tamper evident part 23_3 shown in FIG. 15(c) V-shaped: tamper-evident part 23_4 shown in FIG. 15(d) Slant type: tamper evident part 23_5 shown in FIG. 15(e) Inverted arc type: tamper evident part 23_6 shown in FIG. 15(f) Inverted U-shape: tamper evident section 23_7 shown in FIG. 15(g) Inverted V-shape: Tamper-evident part 23_8 shown in FIG. 15(h)

[0107] 18 and 19, the column "n" indicates the number of tests performed on the tamper-evident part shown in the "tamper-evident part" column. In Experimental Example 1, opening tests were performed from seven different opening locations for each n. Therefore, 35 (5 x 7) opening tests were performed on the tamper-evident part shown in the "tamper-evident part" column.

[0108] The "probability of opening mode a" in Figures 18 and 19 indicates the probability that the package was opened using opening mode a in the above 35 opening tests.

[0109] In the tamper-evident portion 23_6 shown in Fig. 15(f), the inverted U-shaped tamper-evident portion 23_7 shown in Fig. 15(g), and the inverted V-shaped tamper-evident portion 23_8 shown in Fig. 15(h), both of the first end 23a and the second end 23b were located outside the label relative to the center portion 23c. In this case, as shown in Fig. 19, the probability of opening in the opening mode a was significantly lower than 80%.

[0110] In contrast, in the linear tamper-evident portion 23_1 shown in Fig. 15(a), the arc tamper-evident portion 23_2 shown in Fig. 15(b), the U-shaped tamper-evident portion 23_3 shown in Fig. 15(c), the V-shaped tamper-evident portion 23_4 shown in Fig. 15(d), and the inclined tamper-evident portion 23_5 shown in Fig. 15(e), both the first end 23a and the second end 23b were not located outside the label from the center portion 23c. In this case, as shown in Fig. 18, the probability of opening in the opening mode a was 80% or more.

[0111] In the opening mode a, the peeling of the reclosure label 20 caused a break from at least one of the first end 23a and the second end 23b of the tamper-evident portion 23 toward the area 25 corresponding to the removal opening, and the resealing function of the reclosure label 20 was lost. Therefore, if the reclosure was performed in the opening mode a, it can be confirmed that tampering has occurred. In other words, it can be understood that the tamper-evident portion 23 in which neither the first end 23a nor the second end 23b is located outside the label from the center portion 23c is effective in confirming whether tampering has occurred or not.

[0112] In the arc-shaped, U-shaped, and V-shaped tamper-evident portions 23 in which both the first end 23a and the second end 23b are located closer to the center of the label than the central portion 23c, the probability of the opening mode a was 100%. Therefore, it can be understood that the arc-shaped, U-shaped, and V-shaped tamper-evident portions 23 in which both the first end 23a and the second end 23b are located closer to the center of the label than the central portion 23c are more effective in checking for tampering.

[0113] Second embodiment Fig. 20 is a plan view of a lid according to the second embodiment. The lid 4A shown in Fig. 20 has a base film 10 and a reclose label 20A. The configuration of the base film 10 is the same as that of the first embodiment, so a description thereof will be omitted.

[0114] The reclose label 20A has a tab 21 and a label body 22. The reclose label 20A differs from the reclose label 20 in that the label body 22 has a perforation line (tamper evident portion) 27 instead of the tamper evident portion 23. Apart from this difference, the configuration of the reclose label 20A is the same as that of the reclose label 20. Therefore, the reclose label 20A will be described focusing on the differences. In FIG. 20, the middle region 26 is shown hatched as in FIG. 7, and the removal opening corresponding region 25 is shown by a solid line.

[0115] The perforation 27 is formed in a part of the periphery of the outlet corresponding area 25 in an area of ​​the label body 22 other than the intermediate area 26 between the tab 21 and the outlet corresponding area 25. In the second embodiment, as shown in Fig. 20, the perforation 27 surrounds the outlet corresponding area 25 with the intermediate area 26 between the tab 21 and the outlet corresponding area 25 open.

[0116] As shown in FIG. 21, the perforation 27 has a plurality of cut lines (or notch lines) 271 arranged intermittently. The cut lines 271 may be cut lines that completely penetrate the reclose label 20A in the thickness direction, or may be cut lines that are half-penetrating (half-cut). The cut lines 271 are, for example, linear. The cut lines 271 may be formed, for example, by cutting with a blade. The area between adjacent cut lines 271 is referred to as a connecting portion 272. An example of the length d6 of the cut lines 271 is 4 mm or more and 25 mm or less. An example of the length d7 of the connecting portion 272 is 0.4 mm or more and 5 mm or less.

[0117] The reclosure label 20A satisfies the following condition I. (Condition I) When the breaking strength of the perforation 27 is α and the adhesive strength between the label body 22 and the base film 10 is β, α / β is 2 or less.

[0118] The breaking strength α and adhesive strength β may be those measured by a method in accordance with JIS K 7161-1. An example of a method for measuring the breaking strength α and adhesive strength β will be described.

[0119] [Breaking strength] To measure the breaking strength α, sample S shown in FIG. 22 is prepared. Sample S is a sample obtained by bonding label body 22, on which perforation line 27 is formed, to base film 10. Using sample S, the breaking strength α of sample S is measured by a method conforming to JIS K 7161-1. During the measurement, label body 22 is peeled off from base film 10 in a direction perpendicular to perforation line 27, as shown by the white arrow in FIG. 22. [Adhesive strength] A sample similar to that for measuring the breaking strength α is prepared, except that the perforation line 27 is not formed on the label body 22. The adhesive strength β of the prepared sample is measured in the same manner as in the case of the breaking strength α.

[0120] When the reclosure label 20A has the perforation 27 and satisfies the above condition I, if an attempt is made to open the label from a location other than the tab 21, i.e., if an attempt is made to open the label fraudulently, the perforation 27 will break toward the area 25 corresponding to the removal opening, and as a result, as in the first embodiment, a trace of the break will remain and the resealing function will be lost from the reclosure label 20A. Therefore, it is possible to reliably check whether or not the label has been fraudulently opened. This makes it possible to prevent fraudulent opening.

[0121] A specific description will be given with reference to Fig. 23(a) and Fig. 23(b). Fig. 23(a) and Fig. 23(b) are drawings showing the results of peeling performed on a prototype lid body 4A. Fig. 23(a) is a photograph showing the vicinity of the perforation line 27 in the lid body 4A manufactured by bonding the reclose label 20A to the base film 10. Fig. 23(b) is a drawing showing a photograph of the state after the reclose label 20A shown in Fig. 23(a) is peeled from the base film 10 in the direction of the white arrow in Fig. 23(a). When the reclose label 20A is peeled from the vicinity of the perforation line 27 shown in Fig. 23(a), as shown in Fig. 23(b), a break occurs from the perforation line 27 toward the center of the label (the cut portion 13 side), making it impossible to reseal the label.

[0122] As shown in Fig. 20, when the perforation 27 surrounds the outlet corresponding area 25 with the middle area 26 open, it is easier to check for unauthorized opening from around the outlet corresponding area 25. As a result, the effect of deterring unauthorized opening is increased. If the perforation 27 is formed closer to the outlet corresponding area 25, it is more likely that the resealing function will be lost due to breakage. As a result, unauthorized opening can be checked more reliably.

[0123] The middle region 26 is a portion that is peeled off in a normal opening starting from the tab 21. Therefore, in a configuration in which the perforation line 27 is formed outside the middle region 26, it is possible to check whether or not unauthorized opening has been performed, and it is possible to prevent the reclosure label 20A from breaking at the perforation line 27 when it is peeled off in a normal opening method.

[0124] Next, an experimental example 2 regarding the lid body 4A will be described. In the experimental example 2, for the sake of convenience, the same elements as those of the base film 10 and the reclose label 20A described in the second embodiment are denoted by the same reference numerals, and duplicated explanations will be omitted.

[0125] In the experimental example 2, the base film 10 and the reclose label 20A shown in FIG. 24 were used.

[0126] The base film 10 used in Experimental Example 2 had the same configuration as the base film 10 used in Experimental Example 1. The reclose label 20A used in Experimental Example 2 had the same configuration as the reclose label 20 used in Experimental Example 1, except that a perforation line 27 was used as the tamper-evident portion. The perforation line 27 had a cut line 271 that completely penetrated the label body 22 in the thickness direction. The perforation line 27 was formed by cutting with a blade.

[0127] In Experimental Example 2, a reclose label 20A was attached to a base film 10 in the same manner as in Experimental Example 1 to prepare a lid 4A.

[0128] In Experimental Example 2, the breaking strength α was changed while the adhesive strength β was kept constant, thereby preparing lids 4A having different ratios (α / β) of the breaking strength α and the adhesive strength β.

[0129] Specifically, the adhesive strength β was the adhesive strength between the tack film and base film 10 used in the reclose label 20A. Therefore, the adhesive strength β was constant, 4.5 N / 30 mm. Meanwhile, the length d7 of the connecting portion 272 in the perforation line 27 was fixed at 1 mm, while the length d6 of the cut line 271 was changed to change the breaking strength α. In this way, by changing the breaking strength α, the lid body 4A with different α / β was prepared.

[0130] The breaking strength α was measured by the method using sample S described with reference to FIG. 23. Sample S in Experimental Example 2 was a label body 22 having perforation lines 27 formed thereon, which was attached to a base film 10. Sample S had a width of 30 mm, and perforation lines 27 were formed along the entire width of sample S. The breaking strength of sample S was measured by a method conforming to JIS K 7161-1 using an Autograph AG-1S manufactured by Shimadzu Corporation. In measuring the breaking strength, the pulling speed was 300 mm / min, and the peel angle was 90°.

[0131] For the adhesive strength β, samples were prepared similar to those used for measuring the breaking strength α, except that a label body 22 without the perforation 27 was used. The adhesive strength β of the prepared samples was measured in the same manner as for the breaking strength α.

[0132] The length d6 of the cut line 271, the length d7 of the joint 272, and the measured breaking strengths α and α / β employed in Experimental Example 2 were as shown in the table of FIG.

[0133] In Experimental Example 2, the same opening test as in Experimental Example 1 was carried out five times for each lid 4A satisfying α / β shown in FIG. 25. In Experimental Example 2, a new lid 4A was prepared for each opening test. In Experimental Example 2, as in Experimental Example 1, for each lid 4A with different α / β, the reclose label 20A was peeled off from the base film 10 toward the center 25a from the opening area X1, the opening area X2, the opening area X3, the opening area X4, the opening area X5, the opening area X6, and the opening area X7 shown by the white arrows in FIG. 24, and the opening state was evaluated. The method of evaluating the opening state was the same as in Experimental Example 1. A lid 4A was prepared for the opening test for each of the opening areas X1 to X7. The results of the opening test were as shown in the table in FIG. 25.

[0134] The meaning of "n" in the chart shown in FIG. 25 is the same as in FIG. 18 and FIG. 19, and indicates five opening tests conducted on the lid body 4A having the perforation lines 27 satisfying each α / β shown in FIG. 25. In experimental example 2, opening tests were conducted from seven different opening sites for each n. Therefore, 35 (5×7) opening tests were conducted for each α / β. The "probability of opening mode a" in the chart shown in FIG. 25 indicates the probability of opening by opening mode a in the above 35 opening tests.

[0135] As shown in Fig. 25, when α / β exceeds 2, the probability of opening in opening mode a is below 80%. On the other hand, when α / β is 2 or less, the probability of opening in opening mode a is 80% or more, more specifically, 90% or more.

[0136] Therefore, it can be understood that with the lid 4A having the perforation 27 and satisfying the condition I that α / β is 2 or less, unauthorized opening can be reliably confirmed, and as a result, unauthorized opening can be prevented.

[0137] In the second embodiment, the arrangement of the perforation line 27 can be modified in various ways without departing from the spirit of the present invention. In one embodiment, the perforation line 27 can be formed at least either on the side of the outlet corresponding area 25 or behind the outlet corresponding area 25.

[0138] Although various embodiments of the present invention have been described above, the present invention is not limited to the above-described exemplary embodiments, and is intended to include the scope indicated by the claims, as well as all modifications within the meaning and scope equivalent to the claims.

[0139] The shape of the outlet formed in the base film is not limited to the illustrated shape. The shape of the cutout portion (or the planned outlet portion) for forming the outlet is also not limited to the illustrated shape. For example, the cutout portion may be U-shaped without the fourth region 134 and the fifth region 135 in FIG. 4. Alternatively, the cutout portion may be a closed ring-shaped cutout portion in which the rear ends of the first region 131 and the second region 132 are connected by a cut line. The cutout portion may be a circle, an ellipse, a quadrangle (for example, a rectangle, a square, etc.), or a polygon other than a quadrangle.

[0140] The planar shape of the reclose label is not limited to the illustrated shape.

[0141] The storage container to which the lid body with the reclose label is joined is not limited to the tray-shaped container as shown in Fig. 1. The shapes of the base film and the reclose label correspond to the shape of the storage container. The shape of the outlet is also not limited to the exemplified shapes. In the explanation of the base film and the reclose label, the exemplified dimensions are, as described above, examples based on the above embodiment.

[0142] The packaging body may be, for example, a packaging body including a container body (such as a packaging bag) that contains the contents and has a cutout (corresponding to cutout 13 in FIG. 4) formed on one surface for forming an outlet, and a reclose label. The container body corresponds to, for example, the container body and the base film integrated in FIG. 1. In this case, one surface of the container body functions as a support member to which the reclose label is attached.

[0143] The tab may have less adhesiveness than the label body. As long as the tab is formed to have less adhesiveness than the label body (including the case where the tab has no adhesiveness), the method of forming the tab is not limited to the glue-killing process.

[0144] The various embodiments and modifications described above may be combined as appropriate without departing from the spirit of the present invention. [Explanation of symbols]

[0145] 1...packaging body, 2...contents, 3...storage container, 4, 4A...lid body, 10...base film (support member), 11...removal outlet, 13...slit portion, 14...designated removal outlet portion, 20, 20A...reclosure label, 21...grip portion, 23, 23_1, 23_2, 23_3, 23_4, 23_5, 23_6, 23_7, 23_8...tampering confirmation portion, 23A...tampering confirmation portion (first tampering confirmation portion), 23B...tampering confirmation portion (second tampering confirmation portion), 23C...tampering confirmation portion (third tampering confirmation portion). 23C, 23D, 23E, 23F, 23G... tamper-evident portion, 23a... first end, 23b... second end, 23c... center, 25... area corresponding to removal outlet, 26... middle area, 27... perforation line, D1... opening direction.

Claims

1. A support member having a notch formed therein defining a planned outlet portion for removing a contained item; A reclose label attached to the support member; Equipped with The reclosure label is A grip that serves as the starting point for opening the package, a label body adjacent to the tab in the opening direction; having The reclosable label is attached to the support member such that the label body covers the cutout portion, At least one tamper evident portion is formed on the label body for identifying tamper evident other than tamper evident from the tab portion, The at least one tamper evident portion is formed outside an intermediate region between a take-out opening corresponding region of the label body corresponding to the take-out opening and the tab portion, the at least one tamper evident portion comprises a first tamper evident portion, a second tamper evident portion and a third tamper evident portion; The third tamper evident portion is located on the opposite side of the tab portion from the removal opening corresponding area, The first tamper evident portion is located to the side of the removal port corresponding area, The second tamper evident portion is located on a side of the outlet corresponding area and on a side opposite to the first tamper evident portion as viewed from the outlet corresponding area. Lid body.

2. the at least one tamper evident feature is a score line having a first end and a second end opposite the first end; At least one of the first end portion and the second end portion of the cut line is not positioned outside the label body relative to a center portion of the cut line. The lid according to claim 1 .

3. A support member having a notch formed therein defining a planned outlet portion for removing the contents; A reclose label attached to the support member; Equipped with The reclosure label is A grip that serves as the starting point for opening the package, a label body adjacent to the tab in the opening direction; having The reclosable label is attached to the support member such that the label body covers the cutout portion, At least one tamper evident portion is formed on the label body for identifying tamper evident other than tamper evident from the tab portion, The at least one tamper evident portion is a perforation provided in a part of a periphery of the take-out opening corresponding area in an area other than an intermediate area between the take-out opening and the tab in the label body, where α is the breaking strength of the perforation and β is the adhesive strength between the label body and the support member, α / β is 2 or less; The perforation line surrounds the outlet corresponding area with the intermediate area open. Lid body.

4. A packaging body comprising the lid body according to any one of claims 1 to 3.

5. A container body for removing a contained item, the container body having a cutout portion formed on one surface thereof that defines a planned removal outlet portion that is to be an outlet for removing the contained item; A re-closure label attached to the storage body; Equipped with The reclosure label is A grip that serves as the starting point for opening the package, a label body adjacent to the tab in the opening direction; having The reclosure label is attached to the storage body so that the label body covers the cutout portion, At least one tamper evident portion is formed on the label body for identifying tamper evident other than tamper evident from the tab portion, The at least one tamper evident portion is formed outside an intermediate region between a take-out opening corresponding region of the label body corresponding to the take-out opening and the tab portion, the at least one tamper evident portion comprises a first tamper evident portion, a second tamper evident portion and a third tamper evident portion; The third tamper evident portion is located on the opposite side of the tab portion from the removal opening corresponding area, The first tamper evident portion is located to the side of the removal port corresponding area, The second tamper evident portion is located on a side of the outlet corresponding area and on a side opposite to the first tamper evident portion as viewed from the outlet corresponding area. packaging.

6. the at least one tamper evident feature is a score line having a first end and a second end opposite the first end; At least one of the first end portion and the second end portion of the cut line is not positioned outside the label body relative to a center portion of the cut line. The package according to claim 5.

7. A container body for removing a contained item, the container body having a cutout portion formed on one surface thereof that defines a planned removal outlet portion to be an outlet for removing the contained item; A re-closure label attached to the storage body; Equipped with The reclosure label is A grip that serves as the starting point for opening the package, a label body adjacent to the tab in the opening direction; having The reclosure label is attached to the storage body so that the label body covers the cutout portion, At least one tamper evident portion is formed on the label body for identifying tamper evident other than tamper evident from the tab portion, The at least one tamper evident portion is a perforation provided in a part of a periphery of the take-out opening corresponding area in an area other than an intermediate area between the take-out opening and the tab in the label body, where α is the breaking strength of the perforation and β is the adhesive strength between the label body and the one surface, α / β is 2 or less; The perforation line surrounds the outlet corresponding area with the intermediate area open. packaging.

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