JP6409242B2 - Anti-tamper labels and methods for determining whether tamper-proof labels are reused - Google Patents

Description

  The present invention relates to a tamper-proof label and a determination method for determining whether or not to reuse the tamper-proof label.

  A sealing body provided with the contents stored and sealed may have a tamper-proof label attached to the sealing opening so that the fact of opening can be easily recognized when it is opened. This is to prevent the stored contents of the sealing body from being tampered with or misused at an unintended timing or opened and taken out by an unintended person. Further, in order to guarantee that the product is a genuine product, a tamper-proof label may be attached to the product. When the tamper-proof label is removed from the adhered adherend (the above-mentioned sealing body, product, etc.), the base material of the tamper-proof label is easily destroyed, or a part of the tamper-proof label component is covered. It can be easily confirmed that it has been removed by, for example, forming characters such as “VOID” and “opening” left on the body (see, for example, Patent Document 1).

JP-A-10-116031

  However, even if a tamper-proof label, for example, leaves characters on the adherend, it can be reused by applying an adhesive to the affixing surface after removal, unless it is observed carefully. There was a problem that it was difficult to notice the fact of use. In addition, even if it is a tamper-proof label that easily breaks the base material when it is removed, it can be applied to both the tamper-proof label and the adherend by carefully handling it with a paste remover or heating. It is possible to peel off (remove) without leaving a trace of destruction or damage. For this reason, the tamper-proof label removed in an intact state can be reused by re-applying the adhesive on its application surface, and it is difficult to notice the fact of reuse unless carefully observed. There was a problem. In this way, the conventional tamper-proof label can be misused by reuse, for example, by replacing the contents of the sealed body and attaching it again or attaching it to a counterfeit product. It is difficult to do.

  As a tamper-proof label that makes reuse and counterfeiting difficult, a label having a complicated configuration using an easily destructible hologram, RFID (radio frequency identifier), or the like has been proposed. However, since these labels are expensive, it is not practical to use them for general-purpose products distributed in large quantities such as foods.

  The present invention has been made in view of the above circumstances, a novel tamper-proof label that can easily determine the presence or absence of reuse with a simple configuration, and a determination method for determining whether or not the tamper-proof label is reused It is an issue to provide.

In order to solve the above-mentioned problems, the present invention uses tampering that can be used by sticking to an adherend, removing the attached adherend, and then sticking to the adherend again to determine whether or not to reuse. An anti-adhesive label, wherein a pressure-sensitive adhesive layer and a base material are laminated, a code pattern is provided on the surface of the base material opposite to the pressure-sensitive adhesive layer side, and a second pressure-sensitive adhesive is further provided on the code pattern. A layer and a coating layer are laminated in this order, and the base material is not separated into a plurality of layers in the thickness direction, and when viewed from above, two different ones of the peripheral portions of the tamper-proof label are formed. The adhesive layer and the base material, or the adhesive layer, the base material, and the code pattern are provided with a continuous notch so as to divide the code pattern into two or more regions by connecting the dots. Prevention of falsification from adherend When removing the bell, providing a tamper-proof label which is characterized in that it is so irreversible deviation occurs in the code pattern by the cut as a boundary.
Further, the present invention is a method for applying the tamper-proof label to an adherend via the pressure-sensitive adhesive layer, and initial information obtained from a code pattern of the tamper-proof label before or after application to the adherend. After obtaining the initial information, the latest information acquired from the code pattern on the adherend is compared. If the latest information is the same as the initial information, the tamper-proof label is not reused. Determining that the tamper-proof label is reused when the latest information is different from the initial information due to a deviation in the code pattern at the boundary of the cut. Provided is a method for determining whether or not a tamper-proof label is reused.

  ADVANTAGE OF THE INVENTION According to this invention, the novel tamper-proof label which can determine the presence or absence of reuse with a simple structure easily, and the determination method which determines the presence or absence of the reuse of the said tamper-proof label are provided.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which illustrates typically 1st Embodiment of the tamperproof label which concerns on this invention, (a) is a top view, (b) is sectional drawing in the II line | wire of (a), (c) is a side view FIG. It is a top view for demonstrating typically the effect | action at the time of use of the tamper-proof label shown in FIG. It is sectional drawing which illustrates typically 2nd Embodiment of the tamperproof label which concerns on this invention. It is a figure which illustrates typically 3rd Embodiment of the tamper-proof label which concerns on this invention, (a) is a top view, (b) is sectional drawing in the II-II line of (a), (c) is a side view FIG. It is a top view for demonstrating typically the effect | action at the time of use of the tamper-proof label shown in FIG. It is sectional drawing which illustrates typically 4th Embodiment of the tamper-proof label which concerns on this invention. It is a top view for exemplifying 5th Embodiment of the tamper-proof label concerning this invention typically, and also explaining the effect | action at the time of the use typically. It is sectional drawing for demonstrating typically the manufacturing method of the tamper-proof label shown in FIG. It is sectional drawing for demonstrating typically the manufacturing method of the tamper-proof label shown in FIG.

<Tamper-proof label>
The tamper-proof label according to the present invention is used by sticking to an adherend, and after removing from the pasted adherend, it can be used again by sticking to the adherend and determining whether or not to reuse. The pressure-sensitive adhesive layer and the base material are laminated, and a code pattern is provided on the surface of the base material on the side opposite to the pressure-sensitive adhesive layer side. The pressure-sensitive adhesive is not separated into layers and, when viewed from above, connects the two different points of the peripheral portion of the tamper-proof label and divides the code pattern into two or more regions. When the layer and the substrate, or the pressure-sensitive adhesive layer, the substrate and the code pattern are provided with continuous cuts, and the tamper-proof label is removed from the adhered adherend, the code pattern with the cuts as a boundary. Irreversible Wherein the displacement, such is as occurring.
The tamper-proof label uses a conventional two-dimensional code, and can be easily determined whether or not it is reused with a simple configuration in which an adhesive layer, a base material, etc. are simply processed. Is. The conventional two-dimensional code (code pattern) reflects manufacturing management information and product management information, whereas the tamper-proof label uses the two-dimensional code as a means for preventing tampering. This is completely different from the tamper-proof label.

(First embodiment)
1A and 1B are diagrams schematically illustrating a first embodiment of a tamper-proof label according to the present invention, in which FIG. 1A is a plan view, FIG. 1B is a cross-sectional view taken along line II in FIG. c) is a side view.
The tamper-proof label 1 shown here has a pressure-sensitive adhesive layer 12 and a base material 13 laminated, and a code pattern 14 is provided on the surface 13a of the base material 13 opposite to the pressure-sensitive adhesive layer 12 side. A release material 11 is provided on the surface (back surface) 12b of the pressure-sensitive adhesive layer 12 opposite to the base material 13 side. That is, the tamper-proof label 1 is formed by laminating a release material 11, an adhesive layer 12, a base material 13, and a code pattern 14 in this order. In FIG. 1B, in order to make it easy to distinguish a cord 141 that is not present on this cross section but is present behind this cross section from a cord 141 that is present on the cross section. Displayed by changing the density (pattern). Further, in this specification, the code pattern means not a pattern (shape) of each code but a pattern indicated by the code as a whole.

  The code pattern 14 is formed by providing a plurality of black codes 141 on the white substrate 13. More specifically, the cord 141 has the same shape (rectangular shape) and the same size when viewed from above (in plan view), and has four vertices ( The corners are arranged so as to be in contact with each other. The code pattern 14 forms a grid-like pattern as if black rectangles and white rectangles are alternately arranged when viewed from above, and is configured by one black color (single color). Yes.

  The code pattern 14 may be composed of two or more colors in addition to one color, and may include a color other than black.

  The code 141 contains a colorant such as a pigment corresponding to the color, and the colorant may be a known colorant and is not particularly limited.

  In the code pattern 14, the arrangement form of the codes 141 is not limited to that shown in FIG. 1. For example, some of the plurality of codes 141 are adjacent to each other and the outer edges (sides) are adjacent to each other. By arranging them so as to be in contact with each other without any gap, in some cords 141, the ones in which the lengths of two sides in the same direction are twice or more may be arranged. .

  The shape of the cord may be, for example, a polygonal shape other than a quadrangle such as a triangle, pentagon, or hexagon, or may be a shape other than a polygonal shape. Also, the shape and size of the cords may all be the same, all may be different, or only a part may be the same. The shape of the code pattern 14 may also be a non-square shape in accordance with the shape of each code.

  Here, the code pattern 14 includes 13 codes 141, but the number of the codes 141 constituting the code pattern 14 is not limited to this. However, the number of codes 141 constituting the code pattern 14 is preferably 8 to 40000.

  Further, the tamper-proof label 1 is provided with a cut 10. The notch 10 is continuously provided in the pressure-sensitive adhesive layer 12, the base material 13, and the code pattern 14 (code 141). When the anti-tamper label 1 is looked down from above (code pattern 14 side) (in plan view), the notch 10 is between two different points in the peripheral edge portion 1c of the anti-tamper label 1, that is, the first It is provided so as to divide the code pattern 14 into two regions by connecting a point on the first peripheral part 1c1 and a point on the third peripheral part 1c3. In more detail, it is as follows.

  As shown in FIG. 1B, the cuts 10 are continuously provided in a continuous manner from the pressure-sensitive adhesive layer 12 to the base material 13 and further from the base material 13 to the code pattern 14 (code 141). The cuts 10 are provided so as to penetrate in the thickness direction in any of the pressure-sensitive adhesive layer 12, the base material 13, and the code pattern 14, and from the back surface 12 b of the pressure-sensitive adhesive layer 12, It is continuously provided over the surface 14a opposite to the base material 13 side. Here, in order to make it easy to distinguish from the other, the notch 10 is indicated by a dotted line, but the actual notch 10 does not necessarily have to be intermittently provided in this way (continuous). As will be described later, when an appropriate external force is applied (that is, when the tamper-proof label 1 is removed from the adherend), the code pattern 14 is shifted from this position as a boundary. What is necessary is just to be formed.

  Further, the notch 10 does not necessarily have to be provided in the thickness direction in any of the pressure-sensitive adhesive layer 12, the base material 13, and the code pattern 14, and the tamper-proof label 1 is attached to the adherend. It is only necessary to form the code pattern 14 so that the code pattern 14 is deviated from the boundary. However, in this embodiment, in any of the pressure-sensitive adhesive layer 12, the base material 13, and the cord pattern 14, the lengths of the cuts 10 in the thickness direction are those (the pressure-sensitive adhesive layer 12, the base material 13, the cord It is preferably 90% or more of the thickness of the pattern 14), more preferably 95% or more, and particularly preferably 100%. When the ratio of the length of the notch 10 is equal to or greater than the lower limit value, the code pattern 14 is more easily displaced when the tamper-proof label 1 is removed from the adherend.

  Further, as shown in FIGS. 1 (a) and 1 (c), the notch 10 connects the first peripheral portion 1c1 and the third peripheral portion 1c3 among the peripheral portions 1c of the tamper-proof label 1, The pattern 14 is provided so as to be divided into two regions. Further, the cut 10 is provided in parallel to the second peripheral edge 1 c 2 and the fourth peripheral edge 1 c 4 in the peripheral edge 1 c of the tamper-proof label 1. The first peripheral portion 1c1 and the third peripheral portion 1c3 are regions parallel to each other among the four regions of the peripheral portion 1c of the tamper-proof label 1, and in a state viewed in plan as shown in FIG. This is a region that becomes opposite parallel sides. Similarly, the second peripheral portion 1c2 and the fourth peripheral portion 1c4 are regions that are parallel to each other, and are regions that are parallel sides that face each other in a plan view as shown in FIG. The first peripheral edge 1c1, the second peripheral edge 1c2, the third peripheral edge 1c3, and the fourth peripheral edge 1c4 are connected (connected) while forming corners in this order, thereby forming the peripheral edge 1c.

  Further, the cuts 10 are continuously provided in a continuous manner on the side surface 12c of the pressure-sensitive adhesive layer 12 and the side surface 13c of the base material 13 in both the first peripheral edge portion 1c1 and the third peripheral edge portion 1c3. When the tamper-proof label 1 is viewed from the first peripheral edge 1c1 side or the third peripheral edge 1c3 side, the adhesive layer 12 and the base layer 141c are also formed on the side surface 141c of the cord 141 located on the back side from these peripheral edges. A notch 10 (not shown) that is connected to the material 13 is provided.

  Here, the case where the notch 10 is provided continuously to the pressure-sensitive adhesive layer 12, the base material 13 and the code pattern 14 is shown, but the notch 10 is not provided to the code pattern 14. May be. For example, the notch 10 is provided in the pressure-sensitive adhesive layer 12 and the base material 13 at a position overlapping the side surface 141c of the cord 141 when the tamper-proof label 1 is looked down from above (code pattern 14 side) (in plan view). The cord 141 may not be provided.

  Further, in the tamper-proof label 1, the notch 10 connects, for example, the first peripheral portion 1 c 1 and the third peripheral portion 1 c 3 of the tamper-proof label 1, with respect to the second peripheral portion 1 c 2 and the fourth peripheral portion 1 c 4. And may be provided non-parallel. Further, the notch 10 connects the second peripheral edge 1c2 and the fourth peripheral edge 1c4, not the first peripheral edge 1c1 and the third peripheral edge 1c3 of the tamper-proof label 1, so that the first peripheral edge The code pattern 14 is divided into two regions so as to be parallel or non-parallel to the 1c1 and the third peripheral edge portion 1c3 and to be separated from or separated from the code 141. It may be done.

  The notch 10 may be provided in the release material 11 continuously from the pressure-sensitive adhesive layer 12. In this case, the notch 10 is provided without penetrating in the thickness direction of the release material 11. As described above, when the cut 10 having a predetermined length is formed in the pressure-sensitive adhesive layer 12, the cut 10 may also be formed in the release material 11 in the method for manufacturing the tamper-proof label 1 described later. And even if the cut | notch 10 is formed in the peeling material 11 in this way, this invention does not prevent that there exists the effect.

  As shown here, the notch 10 may be provided without forming a gap (slit) (in other words, adjacent layers may be in contact with each other with the notch 10 as a boundary). A gap may be formed between layers adjacent to each other (in other words, adjacent layers may not be in contact with each other with the notch 10 as a boundary). When the gap is provided, the width (slit width) is preferably 5 mm or less.

  Since the notch 10 is provided in this way, the tamper-proof label 1 is completely separated into two with the notch 10 as a boundary when an appropriate external force is applied when the release material 11 is peeled off. It can be divided.

Area of the surface 14a of the code pattern 14 when viewed down the tamper-proof label 1 from above (the total area of the surface 141a of the code 141), it is preferably 0.4～10Cm ^2, a 1～8Cm ² Is more preferable. When the area of the surface 14a of the code pattern 14 is equal to or larger than the lower limit value, it is easier to read the code pattern 14 with a reader. Further, since the area of the surface 14a of the code pattern 14 is equal to or less than the upper limit value, the code pattern 14 is suppressed from being excessively large.

Area of the surface 141a per one cord 141 is preferably 1 to 50 mm ^2, more preferably 2 to 25 mm ^2. When the area of the code 141 is equal to or larger than the lower limit value, it is easier to read the code pattern 14 with a reader. Further, since the area of the code 141 is equal to or less than the upper limit value, the code pattern 14 is suppressed from being excessively large.

  The thickness of the cord 141 (thickness of the code pattern 14) is not particularly limited, but is preferably 0.5 to 50 μm, and more preferably 1 to 30 μm. When the thickness of the cord 141 is equal to or larger than the lower limit value, the structure of the cord 141 is more stably maintained, and when the thickness of the cord 141 is equal to or smaller than the upper limit value, the tamper-proof label 1 is made thinner. Can be Here, the case where the thicknesses of the cords 141 are all the same is shown, but in the present invention, the thicknesses of the cords 141 may all be different or only a part may be the same.

The base material 13 is not separated into a plurality of layers in the thickness direction. In this specification, “the base material does not separate into a plurality of layers in the thickness direction” means that the base material 13 is subjected to normal handling conditions including removal (peeling) of the tamper-proof label from the adherend. Does not separate into two or more layers in the thickness direction.
When the base material 13 is separated into a plurality of layers in the thickness direction, the upper layer portion provided with the code pattern 14 generated by the separation is opposite to the separation surface (the side provided with the code pattern 14). By providing a pressure-sensitive adhesive layer or the like on the side surface), it is possible to affix it to the adherend without damaging the code pattern 14, and it can be reused. However, since the base material 13 is not separated into a plurality of layers in the thickness direction, the tamper-proof label 1 is prevented from being reused.

Although the material of the base material 13 will not be specifically limited if the said conditions are satisfy | filled, The thing containing resin is preferable and only resin may be sufficient.
Examples of the resin include polyesters such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT), polyethylene naphthalate (PEN), polybutylene naphthalate (PBN); polyethylene (PE), polypropylene Examples thereof include polyolefins such as (PP), polystyrene (PS) and polyvinyl chloride (PVC); polyimides and the like.
Although the color of the base material 13 is not specifically limited, It is preferable that the surface 13a on the opposite side to the adhesive layer 12 side of the base material 13 is white at least, and the whole base material 13 may be white.

The material of the base material 13 may be only one kind, or may be two or more kinds. When there are two or more kinds, the combination and ratio thereof can be arbitrarily adjusted.
As what consists of 2 or more types of materials, the alloy (polymer alloy) which consists of 2 or more types of resin, and what provided metal layers, such as aluminum, on the resin layer by vapor deposition etc. can be illustrated.
The resin may be a foam such as foamed polyethylene terephthalate.

  Although the thickness of the base material 13 is not specifically limited, It is preferable that the base material 13 is a film form or a sheet form. In that case, it is preferable that the thickness of the base material 13 is 1-125 micrometers, and 2-50 micrometers. It is more preferable that

The substrate 13 may be composed of a single layer or may be composed of two or more layers. When the base material 13 consists of multiple layers, these multiple layers may be the same as or different from each other. That is, all the layers may be the same, all the layers may be different, or only some of the layers may be different. And when several layers differ from each other, the combination of these several layers is not specifically limited. Here, the plurality of layers being different from each other means that at least one of the material and the thickness of each layer is different from each other.
In addition, when the base material 13 consists of multiple layers, it is good to make it the thickness of the total of each layer be the thickness of said preferable base material 13.

  When the base material 13 consists of two or more layers, the base material 13 should just be a thing in which each layer does not isolate | separate into multiple layers in the thickness direction, and does not carry out interlayer separation.

  Among these, the substrate 13 is particularly preferably a single layer containing a resin.

Since the base material 13 is not separated into a plurality of layers in the thickness direction, the interlayer strength is preferably 25 N / 25 mm or more, and more preferably 30 N / 25 mm or more. Here, “interlayer strength of the substrate” means that measured by the following method.
(Measurement method of interlayer strength of substrate)
A laminate of the pressure-sensitive adhesive layer 12 and the base material 13 is attached to an adherend through the pressure-sensitive adhesive layer 12, and an acrylic strong pressure-sensitive adhesive is further applied to the surface of the base material 13 opposite to the pressure-sensitive adhesive layer 12 side. (A test adhesive layer with a thickness of 20 μm is formed using “PAT1” manufactured by Lintec Corporation), and a test substrate made of polyethylene terephthalate with a thickness of 50 μm is pasted on the test adhesive layer, A laminated structure in which the pressure-sensitive adhesive layer 12, the base material 13, the test pressure-sensitive adhesive layer, and the test base material are laminated in this order on the body is formed. Next, in this laminated structure, the test base material and the test pressure-sensitive adhesive layer are peeled off, and the peeling force when the base material 13 peels in the thickness direction is defined as the interlayer strength. However, when peeling occurs between the pressure-sensitive adhesive layer 12 and the adherend or between the base material 13 and the test pressure-sensitive adhesive layer, the base material 13 is not separated into a plurality of layers in the thickness direction. Judge. The above-mentioned “delamination of the base material 13 in the thickness direction”, “peeling between the pressure-sensitive adhesive layer 12 and the adherend”, “peeling between the base material 13 and the test pressure-sensitive adhesive layer” Means that the target parts are completely separated from the integrated state.

  The pressure-sensitive adhesive layer 12 may be a known one, and the pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer 12 is an acrylic pressure-sensitive adhesive, a rubber-based pressure-sensitive adhesive, a silicone-based pressure-sensitive adhesive, a polyurethane-based pressure-sensitive adhesive, a polyester-based pressure-sensitive adhesive, or a polyolefin-based pressure-sensitive adhesive. Etc. can be exemplified. These pressure-sensitive adhesives may be any of emulsion type, solvent type and solventless type.

  Although the thickness of the adhesive layer 12 is not specifically limited, It is preferable that it is 5-50 micrometers, and it is more preferable that it is 10-25 micrometers. When the thickness of the pressure-sensitive adhesive layer 12 is equal to or greater than the lower limit value, high adhesive strength can be secured when the tamper-proof label 1 is applied to the adherend, and the thickness of the pressure-sensitive adhesive layer 12 is equal to or less than the upper limit value. As a result, the tamper-proof label 1 can be made thinner.

  The adhesive strength of the pressure-sensitive adhesive layer 12 to the base material 13 suppresses the entire pressure-sensitive adhesive layer 12 from remaining on the surface of the adherend when the tamper-proof label 1 is removed (peeled off) from the adherend. A possible value is preferred.

As will be described later, the release material 11 is peeled off when applied to an adherend, but is preferably used when the tamper-proof label 1 is manufactured or stored.
The release material 11 may be a known material, and examples thereof include those in which a release layer is provided on the surface of a paper substrate or a film substrate.

Examples of the paper substrate include various paper materials such as polyethylene laminated paper, polypropylene laminated paper, clay coated paper, resin coated paper, glassine paper, and high quality paper.
Examples of the film substrate include various resin films such as polyethylene terephthalate, polybutylene terephthalate, polyethylene, polypropylene, and polyacrylate.

  Examples of the release material 11 include a synthetic paper or film in which a filler such as a filler is contained in a paper base material or a film base material. If necessary, a release layer is provided on the surface of the synthetic paper or film. May be.

  Examples of the release layer include those containing release agents such as silicone resins, long-chain alkyl resins, and fluorine resins.

  The thickness of the release material 11 is not particularly limited and may be adjusted as appropriate.

  Here, as shown in FIG. 1B, as an example of the tamper-proof label 1, an example in which a region on the base material 13 where the code pattern 14 is not provided is exposed is shown. For example, a cord (not shown) of a color different from that of the cord 141 may be provided in a part or all of the exposed portion.

  The tamper-proof label 1 can determine whether or not it is reused by the following operation. FIG. 2 is a plan view for schematically explaining the operation when the tamper-proof label 1 shown in FIG. 1 is used. 2 that are the same as those shown in FIG. 1 are assigned the same reference numerals as in FIG. 1, and detailed descriptions thereof are omitted. This also applies to the drawings after FIG.

  The tamper-proof label 1 is formed on the surface 9a of the adherend 9, which is the target adherend, as shown in FIG. Affixed to This is a usage form of the normal tamper-proof label 1.

  Since the tamper-proof label 1 has the code pattern 14 divided by the notches 10 as described above and the base material 13 is not separated into a plurality of layers in the thickness direction, the tamper-proof label 1 is attached to the adherend. When it is removed (peeled off) from 9, the code pattern 14 is displaced from the notch 10 as a boundary. This is because the notch 10 is provided between the first peripheral edge 1c1 and the third peripheral edge 1c3. The deviation of the code pattern 14 that occurs at this time is irreversible, and once it occurs, it cannot be restored to its original state when no artificial operation is performed. Even if an operation is added, it is difficult to return to the original state. Here, “the code pattern is displaced at the boundary of the notch” means that, for example, a new gap is generated between the code patterns divided at the boundary of the notch, or the original notch is a gap (slit). If the code pattern is formed due to the presence of cuts, such as the gaps widening, the divided code patterns partially overlapping, or the divided code patterns may be bent. It means that the initial state is not maintained.

The tamper-proof label 1 is removed from the adherend 9 and becomes an altered label 1 ′ in which the code pattern 14 is displaced. For the altered label 1 ′, a new pressure-sensitive adhesive is applied to the surface of the base material 13 on the pressure-sensitive adhesive layer 12 side, and is applied to the surface 8a of the adherend 8 different from the original adherend 9 and then re-applied. When used, as shown in FIG. 2 (b), an altered code pattern 14 'different from the original code pattern 14 is provided.
Since the altered code pattern 14 ′ is not recognized as the initial code pattern 14, the code pattern 14 is acquired as initial information, and after the initial information is acquired, the altered code pattern 14 ′ is acquired as the latest information, If these pieces of information are compared, since the latest information is different from the initial information, it can be determined that the tamper-proof label 1 is reused.

  Regardless of the direction in which the tamper-proof label 1 is removed (peeled off) from the adherend 9, the code pattern 14 is displaced from the notch 10 as a boundary. For example, even if the said direction is a direction parallel to either the 1st peripheral part 1c1 and the 3rd peripheral part 1c3, and the 2nd peripheral part 1c2 and the 4th peripheral part 1c4, it is a non-parallel direction. Even in such a case, the tamper-proof label 1 causes a shift in the code pattern 14 with the notch 10 as a boundary. However, the displacement of the code pattern 14 shown in FIG. 2B is such that the direction when removing the tamper-proof label 1 from the adherend 9 is parallel to the first peripheral edge 1c1 and the third peripheral edge 1c3. In some cases it occurs more prominently.

(Second Embodiment)
FIG. 3 is a cross-sectional view schematically illustrating a second embodiment of a tamper-proof label according to the present invention.
The tamper-proof label 2 shown here is obtained by further laminating an adhesive layer 15 and a coating layer 16 in this order on the code pattern 14 of the tamper-proof label 1 shown in FIG. In this embodiment, the pressure-sensitive adhesive layer 15 on the code pattern 14 is referred to as a second pressure-sensitive adhesive layer 15 in order to distinguish it from the pressure-sensitive adhesive layer 12 between the release material 11 and the base material 13. The pressure-sensitive adhesive layer 12 between the base materials 13 is referred to as a first pressure-sensitive adhesive layer 12.
The tamper-proof label 2 is the same as the tamper-proof label 1 except that the second pressure-sensitive adhesive layer 15 and the coating layer 16 are provided.

The covering layer 16 protects the code pattern 14 and facilitates the production of the tamper-proof label 2. A method for manufacturing the tamper-proof label 2 will be described later. In addition, the second pressure-sensitive adhesive layer 15 fixes the covering layer 16 on the code pattern 14, and when the tamper-proof label 1 is removed from the adherend, the code pattern 14 is displaced from the notch 10 as a boundary. The state is maintained more stably.
The tamper-proof label 2 may be used with the second pressure-sensitive adhesive layer 15 and the coating layer 16 removed, or may be used without the second pressure-sensitive adhesive layer 15 and the coating layer 16, and is appropriately selected according to the purpose. do it. The tamper-proof label 2 when the second pressure-sensitive adhesive layer 15 and the coating layer 16 are removed is substantially equivalent to the tamper-proof label 1.

When the second pressure-sensitive adhesive layer 15 and the coating layer 16 are used as they are without being removed, the second pressure-sensitive adhesive layer 15 and the coating layer 16 need to have transparency. In this way, in the tamper-proof label 2, the coating layer 16 and the second pressure-sensitive adhesive layer are used. The code pattern 14 can be recognized via the layer 15.
When removed and used, the second pressure-sensitive adhesive layer 15 and the coating layer 16 may have transparency or may not have transparency.

The second pressure-sensitive adhesive layer 15 can have the same structure as that of the first pressure-sensitive adhesive layer 12 except for the point that it may have transparency.
However, the adhesive force of the second pressure-sensitive adhesive layer 15 to the code pattern 14 or the base material 13 is preferably 10 N / 25 mm or less, and more preferably 7 N / 25 mm or less.
Further, the adhesive force of the second pressure-sensitive adhesive layer 15 to the code pattern 14 or the base material 13 is preferably 3 N / 25 mm or more, and more preferably 5 N / 25 mm or more. The laminated structure of the second pressure-sensitive adhesive layer 15 and the covering layer 16 is more stably maintained in the tamper-proof label 1 because the adhesive strength is equal to or higher than the lower limit value. Further, when the tamper-proof label 1 is removed from the adherend, it is possible to more stably maintain a state in which the code pattern 14 is displaced from the notch 10 as a boundary.
The adhesive force of the second pressure-sensitive adhesive layer 15 to the code pattern 14 or the base material 13 is to prevent tampering in which the release material 11 is peeled after the second pressure-sensitive adhesive layer 15 and the coating layer 16 are laminated on the code pattern 14 in this order. The label 2 was attached to the SUS plate through the first adhesive layer 12 and left in a standard environment for 24 hours, and then the measurement conditions (peeling) of JIS Z 0237 were set except that the application time was set in this way. The angle can be measured according to 180 °. Here, the adhesive strength of the second pressure-sensitive adhesive layer 15 means the adhesive strength when the second pressure-sensitive adhesive layer 15 is peeled off from the code pattern 14 or the base material 13 together with the coating layer 16.

When the 2nd adhesive layer 15 and the coating layer 16 are not removed at the time of use, it is preferable that the thickness of the 2nd adhesive layer 15 is 5-50 micrometers, and it is more preferable that it is 10-25 micrometers. The effect by providing the 2nd adhesive layer 15 is acquired more notably because the thickness of the 2nd adhesive layer 15 when not removing is more than the said lower limit. Moreover, when the thickness of the 2nd adhesive layer 15 when not removing is below the said upper limit, the recognition of the code pattern 14 through the 2nd adhesive layer 15 and the coating layer 16 becomes easier.
When the second pressure-sensitive adhesive layer 15 and the coating layer 16 are removed during use, the thickness of the second pressure-sensitive adhesive layer 15 is not particularly limited. For example, when the second pressure-sensitive adhesive layer 15 and the coating layer 16 are not removed during use. The same may be applied.

  The coating layer 16 is preferably made of a resin, and the resin is a polyester such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), polybutylene naphthalate (PBN); polyethylene, polypropylene Polyolefins such as the above can be exemplified, and may be made of a suitable material depending on the necessity of having transparency.

  The thickness of the coating layer 16 is not particularly limited, but the coating layer 16 is preferably in the form of a film, and the thickness of the coating layer 16 is determined regardless of whether or not the coating layer 16 is removed when the tamper-proof label 2 is used. It is preferable that it is 2-100 micrometers, and it is more preferable that it is 5-50 micrometers. When the thickness of the coating layer 16 is equal to or more than the lower limit, the effect of providing the coating layer 16 can be obtained more remarkably. Further, since the thickness of the covering layer 16 is equal to or less than the upper limit value, the tamper-proof label 1 can be made thinner, and the second pressure-sensitive adhesive layer 15 and the covering layer 16 are not removed when the tamper-proof label 2 is used. In this case, the code pattern 14 can be easily recognized through the second pressure-sensitive adhesive layer 15 and the coating layer 16.

  The coating layer 16 may be composed of a single layer, or may be composed of two or more layers. When the coating layer 16 is composed of a plurality of layers, these layers may be the same or different from each other. The thickness of is preferably the thickness of the preferred coating layer 16 described above.

  Here, as is evident from FIG. 3, nothing is provided between the second pressure-sensitive adhesive layer 15 in the region where the code pattern 14 on the base material 13 is not provided as the tamper-proof label 2. In the example, the region is a gap. In FIG. 3, the two cords 141 that are displayed with different color densities (patterns) and are not displayed in cross section are present in the cross section in the back side. The two cords 141 are shown in the sectional view because the region where the cord pattern 14 on the base material 13 is not provided is a gap. When the tamper-proof label 2 is viewed in plan so that the cord 141 is looked down from above, if the illustration of the second pressure-sensitive adhesive layer 15 and the covering layer 16 is omitted, the plan view at this time is the same as FIG. become. In this plan view (FIG. 1A), the surface of the base material 13 is exposed and displayed in a region where the cord 141 on the base material 13 is not provided. I understand.

  On the other hand, the tamper-proof label 2 is provided with, for example, the second pressure-sensitive adhesive layer 15 protruding to a part or all of the above-described region (void) where the code pattern 14 on the base material 13 is not provided ( A cord (not shown) of a color different from that of the cord 141 may be provided.

  The tamper-proof label 2 exhibits the same action as the tamper-proof label 1. At this time, when the tamper-proof label 2 affixed on the surface of the adherend is removed (peeled off) from the adherend, the obtained altered label is the same as in the case of the tamper-proof label 1. As shown in FIG. 2 (b), an altered code pattern 14 ′ different from the original code pattern 14 is provided. When the tamper-proof label 2 is used without removing the second pressure-sensitive adhesive layer 15 and the coating layer 16, the second pressure-sensitive adhesive layer 15 and the coating layer 16 are left as they are in the defective label obtained by removal. Remains.

(Third embodiment)
4A and 4B are diagrams schematically illustrating a third embodiment of a tamper-proof label according to the present invention, in which FIG. 4A is a plan view, FIG. 4B is a cross-sectional view taken along line II-II in FIG. c) is a side view.
The tamper-proof label 3 shown here is provided with a notch 30 at a position different from the notch 10 of the tamper-proof label 1 shown in FIG.

  More specifically, as shown in FIGS. 4A and 4C, the notch 30 has a first peripheral portion 3 c 1 and a fourth peripheral portion 3 c 4 that are corner portions of the peripheral portion 3 c of the tamper-proof label 3. And the connecting portion of the second peripheral portion 3c2 and the third peripheral portion 3c3, which are corner portions, are provided so as to divide the code pattern 14 into two regions. Further, the cuts 30 are continuously provided in a continuous manner on the side surface 12 c of the first pressure-sensitive adhesive layer 12, the side surface 13 c of the base material 13, and the side surface 141 c of the cord 141 in the corner portion. The notch 30 is provided so as to divide the cord 141 into two when the anti-tamper label 3 is looked down from above (code pattern 14 side) (in plan view). However, in FIG. 4C, in order to easily distinguish the notch 30 from the peripheral edge 3 c of the tamper-proof label 3, the notch 30 is shown slightly separated from the peripheral edge 3 c.

  The tamper-proof label 3 is the same as the tamper-proof label 1 except that a cut 30 is provided instead of the cut 10. The peripheral edge 3c is configured by connecting (connecting) the first peripheral edge 3c1, the second peripheral edge 3c2, the third peripheral edge 3c3, and the fourth peripheral edge 3c4 in this order while forming a corner.

  In the tamper-proof label 3, for example, the cut 30 includes a connection portion between the first peripheral portion 3 c 1 and the second peripheral portion 3 c 2 that are corner portions of the peripheral portion 3 c and a third peripheral portion 3 c 3 that is a corner portion of the peripheral portion 3 c. In addition, the cord pattern 14 may be provided so as to be divided into two regions by connecting with the connecting portion of the fourth peripheral edge portion 3c4.

  The falsification preventing label 3 exhibits the same action as the falsification preventing label 1. FIG. 5 is a plan view for schematically explaining the operation when the tamper-proof label 3 shown in FIG. 4 is used.

The tamper-proof label 3 is formed on the surface 9a of the adherend 9 which is the target adherend, as shown in FIG. Affixed to
Since the tamper-proof label 3 has the code pattern 14 divided by the cuts 30 as described above, and the base material 13 is not separated into a plurality of layers in the thickness direction, the tamper-proof label 3 is attached to the adherend. When it is removed (peeled off) from 9, the code pattern 14 is displaced from the notch 30 as a boundary. This is because the cut 30 is provided between the two corners of the peripheral edge 3 c of the tamper-proof label 3. The deviation of the code pattern 14 generated at this time is irreversible as in the case of the tamper-proof label 1.

The tamper-proof label 3 is removed from the adherend 9 and becomes an altered label 3 ′ in which the code pattern 14 is displaced. For the altered label 3 ′, a new pressure-sensitive adhesive is applied to the surface of the base material 13 on the pressure-sensitive adhesive layer 12 side, and the modified label 3 ′ is pasted on the surface 8 a of the adherend 8 different from the original adherend 9. When used, as shown in FIG. 5 (b), an altered code pattern 14 'different from the original code pattern 14 is provided.
Since the altered code pattern 14 ′ is not recognized as the initial code pattern 14, the code pattern 14 is obtained as initial information, and after obtaining the initial information, the altered code pattern 14 ′ is obtained as the latest information. If these pieces of information are compared, the latest information is different from the initial information, so that it can be determined that the tamper-proof label 3 is reused.

  Regardless of the direction in which the tamper-proof label 3 is removed (peeled off) from the adherend 9, the code pattern 14 is deviated from the notch 30 as a boundary. For example, even if the said direction is a direction parallel to either the 1st peripheral part 3c1 and the 3rd peripheral part 3c3, and the 2nd peripheral part 3c2 and the 4th peripheral part 3c4, it is a non-parallel direction. Even in this case, the tamper-proof label 3 is displaced in the code pattern 14 with the notch 30 as a boundary. However, the displacement of the code pattern 14 shown in FIG. 5B is a direction in which the direction when the tamper-proof label 3 is removed from the adherend 9 is perpendicular to the notch 30 when the code pattern 14 is looked down from above. Is more noticeable.

(Fourth embodiment)
FIG. 6 is a cross-sectional view schematically illustrating a fourth embodiment of a tamper-proof label according to the present invention.
The tamper-proof label 4 shown here is obtained by further laminating an adhesive layer (second adhesive layer) 15 and a coating layer 16 in this order on the code pattern 14 of the tamper-proof label 3 shown in FIG. The pressure-sensitive adhesive layer 12 between the release material 11 and the base material 13 is a first pressure-sensitive adhesive layer.
The tamper-proof label 4 is the same as the tamper-proof label 3 except that the second pressure-sensitive adhesive layer 15 and the coating layer 16 are provided, and the second pressure-sensitive adhesive layer 15 and the coating layer 16 are the tamper-proof label 2. The second adhesive layer 15 and the coating layer 16 in FIG.

  Here, as is evident from FIG. 6, nothing is provided between the second pressure-sensitive adhesive layer 15 in the region where the code pattern 14 on the base material 13 is not provided as the tamper-proof label 4. In the example, the region is a gap. For example, the gap is the same as the gap in the tamper-proof label 2 shown in FIG. When the tamper-proof label 4 is viewed in plan so that the cord 141 is looked down from above, the plan view at this time is the same as FIG. 4A if the illustration of the second adhesive layer 15 and the covering layer 16 is omitted. become. And the tamper-proof label 4 is, for example, the second pressure-sensitive adhesive layer 15 in a part or all of the gap (the area where the code pattern 14 on the base material 13 is not provided), like the tamper-proof label 2. It may be provided protruding (filled), or a code (not shown) of a color different from that of the code 141 may be provided.

  The tamperproof label 4 exhibits the same action as the tamperproof label 3. At this time, when the tamper-proof label 4 affixed on the surface of the adherend is removed (peeled off) from the adherend, the obtained altered label is the same as in the case of the tamper-proof label 3. As shown in FIG. 5B, an altered code pattern 14 ′ different from the original code pattern 14 is provided. When the tamper-proof label 4 is used without removing the second pressure-sensitive adhesive layer 15 and the coating layer 16, the second pressure-sensitive adhesive layer 15 and the coating layer 16 are left as they are in the defective label obtained by removal. Remains.

(Fifth embodiment)
FIG. 7 is a plan view for schematically illustrating a fifth embodiment of the tamper-proof label according to the present invention and for schematically explaining the operation at the time of use.

A tamper-proof label 5 shown in FIG. 7A is provided with a code pattern 54 different from the code pattern 14 in the tamper-proof label 1 shown in FIG.
More specifically, the code pattern 54 is formed by providing a plurality of black codes 541 on the base material 13. The cords 541 are all the same shape (circular shape, dot shape) and the same size when they are looked down from above (in plan view), and are all arranged without contacting each other. The code pattern 54 is composed of one color (single color).

  On the other hand, the cut 50 is provided so as to divide the code pattern 54 into two regions by connecting the first peripheral portion 5c1 and the third peripheral portion 5c3 among the peripheral portions 5c of the tamper-proof label 5. At the same time, four cords 541 in one row are provided so as to be divided.

The tamperproof label 5 is the same as the tamperproof label 1 except for the above points. The peripheral edge 5c is configured by connecting (connecting) the first peripheral edge 5c1, the second peripheral edge 5c2, the third peripheral edge 5c3, and the fourth peripheral edge 5c4 in this order while forming a corner.
For example, also in the tamper-proof label 5, the formation position of the notch 50 can be adjusted as appropriate, similarly to the notch 10 in the tamper-proof label 1, and the arrangement form, size, and color of the code 541 as in the code 141 in the tamper-proof label 1. Etc. can be adjusted appropriately.

Similar to the tamper-proof label 1, the tamper-proof label 5 is attached to the surface of the target adherend with the exposed adhesive layer 12 after the release material 11 is peeled off.
Since the tamper-proof label 5 has the code pattern 54 divided by the notches 50 as described above, and the base material 13 is not separated into a plurality of layers in the thickness direction, the tamper-proof label 5 is attached to the adherend. When it is removed (peeled off), the code pattern 54 is irreversibly displaced from the notch 50 as a boundary, resulting in the altered label 5 ′. When the altered label 5 ′ is applied by newly applying a pressure-sensitive adhesive to the surface of the base material 13 on the side of the pressure-sensitive adhesive layer 12 and pasted on the surface of the adherend different from the original adherend, and reused. As shown in FIG. 7 (b), an altered code pattern 54 ′ different from the original code pattern 54 is provided.
Since the altered code pattern 54 ′ is not recognized as the initial code pattern 54, the code pattern 54 is obtained as initial information, and after obtaining the initial information, the altered code pattern 54 ′ is obtained as the latest information. If these pieces of information are compared, since the latest information is different from the initial information, it can be determined that the tamper-proof label 5 is reused.

(Sixth embodiment)
In the sixth embodiment of the tamper-proof label according to the present invention, an adhesive layer (second adhesive layer) and a coating layer are further laminated in this order on the code pattern 54 of the tamper-proof label 5 shown in FIG. The pressure-sensitive adhesive layer between the release material 11 and the base material 13 is a first pressure-sensitive adhesive layer (not shown).
The tamper-proof label of this embodiment is the same as the tamper-proof label 5 except that the second pressure-sensitive adhesive layer and the coating layer are provided. The second pressure-sensitive adhesive layer and the coating layer are the same as those in the tamper-proof label 2. The second pressure-sensitive adhesive layer 15 and the coating layer 16 have the same configuration and function.

  As in the case of the tamper-proof label 2 and the tamper-proof label 4 described above, the tamper-proof label of the present embodiment is also located between the second pressure-sensitive adhesive layer in the region where the code pattern on the substrate is not provided. Nothing is provided, and the region may be a void, or a part or all of the region is provided with (filled with) a second pressure-sensitive adhesive layer, for example. Alternatively, different color cords may be provided.

  The tamper-proof label of this embodiment exhibits the same action as the tamper-proof label 5, and when it is removed (peeled off) from the adhered adherend, the resulting altered label is the original code pattern. With different altered code patterns. And when the tamper-proof label of this embodiment is used without removing the second pressure-sensitive adhesive layer and the coating layer, the second pressure-sensitive adhesive layer and the coating layer remain as they are in the defective label obtained by removing. .

  In the first to sixth embodiments described above, the code is described as being configured with a color that can be identified by visible light. However, in the present invention, a part or all of the codes constituting the code pattern (one or two) May be composed of a color that cannot be identified by visible light, for example, formed of infrared absorbing ink or the like.

(Other embodiments)
Up to this point, the tamper-proof label having a code pattern in which the code has a quadrangular or dot shape has been mainly described. However, in the tamper-proof label according to the present invention, the code pattern is not particularly limited as long as it is a two-dimensional code.
Specific examples of the code pattern in the present invention include color barcodes such as a Microsoft tag (Microsoft), a color code (Colorzip), and a chameleon code (Shift); QR code (registered trademark), SP code, CP Matrix type two-dimensional code such as Code, Veri code, Maxi code, DataMatrix, AztecCode, etc .; Stack type two-dimensional code such as PDF417, Code49, etc .; Dot code such as Grid mark (Gridmark), Z code (Toppan TDK Label) However, the present invention is not limited to these.

<Manufacturing method of tamper-proof label>
The tamper-proof label according to the present invention includes, for example, a step of laminating a pressure-sensitive adhesive layer (first pressure-sensitive adhesive layer) and a base material (hereinafter sometimes abbreviated as “lamination step”), and the pressure-sensitive adhesive of the base material. A step of forming a code pattern on the surface opposite to the agent layer side (hereinafter sometimes abbreviated as “code pattern formation step”), and when looking down from above, the pressure-sensitive adhesive layer and the base material Continuing to the pressure-sensitive adhesive layer and the base material, or the pressure-sensitive adhesive layer, the base material and the code pattern so as to divide the code pattern into two or more regions by connecting two different points in the peripheral portion. And a step of forming a notch (hereinafter, sometimes abbreviated as “notch forming step”).
Hereinafter, the tamper-proof label 1 shown in FIG. 1 will be described as an example, and the manufacturing method thereof will be described. FIG. 8 is a cross-sectional view for schematically explaining a method for manufacturing the tamper-proof label 1 shown in FIG.

(Lamination process (first lamination process))
In the laminating step (sometimes referred to as a “first laminating step” in order to distinguish it from a “second laminating step” to be described later), as shown in FIG. ) The pressure-sensitive adhesive layer 12 is laminated on 13b.
The pressure-sensitive adhesive layer 12 can be formed by applying a pressure-sensitive adhesive composition to the back surface 13 b of the substrate 13 and drying it. Alternatively, the pressure-sensitive adhesive layer 12 can also be formed by pasting the pressure-sensitive adhesive layer formed by applying the pressure-sensitive adhesive composition on the surface of the release layer of the release material and drying it on the back surface 13 b of the base material 13. In this case, when the above-described release material 11 is used as the release material, the release material 11 does not need to be removed. When a release material other than the release material 11 is used, the release material is removed. FIG. 8A shows a case where the release material 11 is provided.

Examples of the pressure-sensitive adhesive composition include those in which the pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer 12, the solvent or the dispersion medium, and other components as necessary are blended.
Examples of the solvent or dispersion medium include esters such as ethyl acetate and butyl acetate; ketones such as methyl isobutyl ketone, methyl ethyl ketone and cyclohexanone; aromatic hydrocarbons such as toluene and xylene; alcohol; water and the like.

  The adhesive composition may be applied to the base material 13 or the release material by a known method, such as an air knife coater, blade coater, bar coater, gravure coater, roll coater, roll knife coater, curtain coater, die coater, Examples thereof include a method using various coaters such as a knife coater, a screen coater, a Meyer bar coater, and a kiss coater.

The application amount of the pressure-sensitive adhesive composition to the base material 13 or the release material may be adjusted as appropriate, but the application amount of the pressure-sensitive adhesive is preferably 1 to 100 g / m ² .

  Although the drying conditions of an adhesive composition are not specifically limited, It is preferable that temperature is 40-150 degreeC and time is 20 seconds-5 minutes.

  The pressure-sensitive adhesive layer 12 is preferably formed by bonding the pressure-sensitive adhesive layer to the base material 13 after forming the pressure-sensitive adhesive layer on the release material under the above conditions.

(Code pattern formation process)
In the manufacturing method, as shown in FIG. 8B, a code pattern forming step of forming a code pattern 14 on the surface 13a of the base material 13 on the side opposite to the adhesive layer 12 side after the lamination step is completed. Do.

The code pattern 14 can be formed by applying the code composition to the surface 13a of the base material 13 and drying it to form the code 141 at each desired location.
The code 141 is preferably formed by a printing method.
The printing method is preferably a gravure printing method, a flexographic printing method, an offset printing method, or a digital printing method such as a UV-inkjet method or an electrophotographic method.

Examples of the cord composition include a colorant, a solvent or a dispersion medium corresponding to each cord, and other components blended as necessary. In the printing method, various types suitable for these methods are used. Ink compositions can be used.
Examples of the solvent or dispersion medium include those similar to the solvent or dispersion medium in the pressure-sensitive adhesive composition, but are not limited thereto.
When the cord can be adjusted to the target color with components other than the colorant, it is not necessary to add a colorant to the cord composition.

(Incision forming process)
In the manufacturing method, as shown in FIG. 8C, when the code pattern forming step is finished, when viewed from above (code pattern 14 side), the adhesive layer 12 and the peripheral portion of the base material 13 (the first portion) Among the side surface 12c of the pressure-sensitive adhesive layer 12 and the side surface 13c) of the base material 13, the pressure-sensitive adhesive layer 12, the base material 13 and the cord are connected so as to divide the code pattern 14 into two or more regions by connecting two different points. A notch forming step for forming continuous notches 10 in the pattern 14 is performed.
The cut 10 can be formed by using a Thomson blade, a pinnacle blade, a die cut roll, or the like.
By performing these steps, the tamper-proof label 1 is obtained.

  In addition, unlike what is shown to Fig.8 (a), when the peeling material 11 is not provided at the time of formation of the adhesive layer 12, the peeling material 11 is separately provided on the back surface 12b of the adhesive layer 12 (attachment). It is preferable that the release material 11 be provided at any time. However, as described above, it is preferable to provide the release material 11 on the back surface 12b of the pressure-sensitive adhesive layer 12 before the cuts 10 are formed in the pressure-sensitive adhesive layer 12, the base material 13, and the code pattern 14. By doing in this way, the release material 11 also functions as a support, and the cut 10 can be stably formed, and the adhesive layer 12, the base material 13 and the code pattern 14 in which the cut 10 is formed are laminated. The structure is maintained more stably.

Among the tamper-proof labels according to the present invention, those in which the second pressure-sensitive adhesive layer and the coating layer are further laminated in this order on the code pattern are the above-described manufacturing methods (hereinafter, in order to distinguish them from other manufacturing methods). Next to the manufacturing method 1 ”), a step of laminating the second pressure-sensitive adhesive layer and the coating layer on the code pattern (hereinafter referred to as“ second laminating step ”in order to distinguish from the laminating step in the manufacturing method 1) And a manufacturing method (hereinafter referred to as “manufacturing method 2”) having a stacking process in manufacturing method 1 is referred to as “first stacking process”.
Hereinafter, the tamper-proof label 2 shown in FIG. 3 will be described as an example and the manufacturing method thereof will be described. FIG. 9 is a cross-sectional view for schematically explaining the method for manufacturing the tamper-proof label 2 shown in FIG.

(Second lamination step)
In the second lamination step, it is usually difficult to sequentially laminate the second pressure-sensitive adhesive layer 15 and the coating layer 16 on the code pattern 14 of the tamper-proof label 1 obtained by the manufacturing method 1. Therefore, first, as shown in FIG. 9A, the second pressure-sensitive adhesive layer 15 is laminated on the surface of the release layer of the release material 21.
The 2nd adhesive layer 15 can be formed by apply | coating a 2nd adhesive composition to the peeling layer surface of the peeling material 21, and making it dry, for example, the case of the 1st adhesive layer 12 in a 1st lamination process, and It can be formed by a similar method. The release material 21 may be the same as the release material 11 in the tamper-proof label 1 or may be a known material other than the release material 11.

  Next, in the second lamination step, the coating layer 16 is laminated on the second pressure-sensitive adhesive layer 15 as shown in FIG. The coating layer 16 can be laminated by pressing and sticking to the second pressure-sensitive adhesive layer. At this time, the second pressure-sensitive adhesive layer may be heated as necessary.

Next, in the second lamination step, as shown in FIG. 9C, the release material 21 is peeled from the laminate of the release material 21, the second pressure-sensitive adhesive layer 15, and the coating layer 16, and then the second pressure-sensitive adhesive layer. The exposed surface of 15 and the code pattern 14 of the tamper-proof label 1 obtained by the manufacturing method 1 face each other and are bonded together.
By performing these steps, the tamper-proof label 2 is obtained as shown in FIG.

  In the second lamination step, the second pressure-sensitive adhesive layer 15 may be directly laminated on the coating layer 16 instead of the release material 21 to form a laminate of the second pressure-sensitive adhesive layer 15 and the coating layer 16. Good.

  Up to this point, the tamper-proof label 1 shown in FIG. 1 and the tamper-proof label 2 shown in FIG. 3 have been described as examples, but other tamper-proof labels are also adjusted as appropriate according to their configuration. And can be manufactured.

  For example, the tamper-proof label 3 shown in FIG. 4 forms a cut 30 instead of the cut 10, that is, when forming a continuous cut in the adhesive layer 12, the base material 13, and the code pattern 14 in the cut forming process. Moreover, it can be manufactured by the same method as the case of the tamper-proof label 1 shown in FIG. 1 except that the formation position is changed.

  Further, the tamper-proof label 5 shown in FIG. 7 is the same as the tamper-proof label 1 shown in FIG. 1 except that the code pattern 54 is formed instead of the code pattern 14 and the cut 50 is formed instead of the cut 10. It can be manufactured in the same way as the case. The code pattern 54 may be formed by the same process as the code pattern forming process in the falsification preventing label 1 except that the dot-shaped code 541 is formed instead of the quadrangular code 141. The formation of the cut 50 is the same as that in the tamper-proof label 1 except that the cut position is changed when the cut is continuously formed in the adhesive layer 12, the base material 13 and the code pattern 54 (code 541). The same process as the notch forming process may be performed.

<Method for determining whether or not tamper-proof labels are reused>
A method for determining whether or not a tamper-proof label according to the present invention is reused is a method in which the tamper-proof label according to the present invention is applied to an adherend via the adhesive layer and is applied to the adherend before or after application. The initial information acquired from the code pattern of the tamper-proof label immediately after is compared with the latest information acquired from the code pattern on the adherend after the initial information is acquired, and the latest information is the same as the initial information. In some cases, it is determined that the tamper-proof label is not reused, and when the latest information is different from the initial information due to a deviation in the code pattern at the notch, It is determined that the tamper-proof label is reused.
In the determination method, the presence / absence of reuse of the tamper-proof label can be determined with high accuracy and speed by a simple process of using the tamper-proof label according to the present invention and collating information acquired from the code pattern.

In the determination method, first, the tamper-proof label is applied to the target adherend through the adhesive layer, and information is obtained from the code pattern of the tamper-proof label before or immediately after application to the adherend. Get (initial information). The initial information acquired here is acquired from the original code pattern whose configuration has not changed, and is accurate information.
The “tamper-proof label immediately after application to the adherend” means that the attachment state has been intentionally changed, such as removal (peeling) or changing the code pattern after application to the adherend. This means an anti-tamper label that has been found to be absent (guaranteed), in other words, an anti-tamper label whose configuration has not changed since it was applied to the adherend.

  Acquisition of initial information from the code pattern of the tamper-proof label is preferably performed using a reader. By using a reader, information can be acquired with higher accuracy in a short time, and the acquired information can be easily managed. When a reader is used, information can be acquired with higher accuracy in a short time even if the code pattern is made finer or more complicated.

  The reader can be configured in the same manner as a conventional two-dimensional code reader, for example, information reading means for reading code pattern information, information transmission means for transmitting the read information, and recording the transmitted information Examples include information processing means for performing processing such as collation, display means for displaying the results of information processing, and the like.

  Next, in the determination method, after obtaining the initial information, information (latest information) is further obtained from the code pattern on the adherend. The latest information acquired here is the newest information acquired from a code pattern whose time has passed since the initial information was acquired, and the presence or absence of the change in the configuration is unknown. Information. In other words, the latest information is unknown (not guaranteed) that the tamper-proof label affixed to the adherend has not been intentionally changed in its affixing state, such as removal (peeling) thereafter. ) Obtained from the code pattern of the thing.

  The latest information from the code pattern may be acquired in the same manner as the initial information.

Next, in the determination method, the initial information is compared with the latest information. Here, if the latest information is the same as the initial information, it can be determined that the tamper-proof label is not reused. The reason for this is that when the tamper-proof label is removed (peeled off) from the adherend, for example, as described with reference to FIGS. This is because the latest information is different from the initial information. Such a code pattern deviation occurs when the tamper-proof label is removed from the adherend, and there is no such code pattern deviation, that is, the code pattern is unchanged. This means that the tamper-proof label has not been removed from the adherend, and reuse has not been performed, such as reattaching after removal.
On the other hand, if the latest information is different from the initial information due to a shift in the code pattern at the boundary of the cut, it is determined that the tamper-proof label is removed from the adherend and reused. it can.

  As described above, the tamper-proof label according to the present invention uses a two-dimensional code as a means for preventing tampering, has a simple configuration, and can be manufactured in a simple process, and therefore can be provided at low cost. Further, in the determination method according to the present invention, the presence / absence of reuse of the tamper-proof label can be determined with high accuracy and speed by a simple process of using the tamper-proof label and collating information acquired from the code pattern. Therefore, the tamper-proof label and determination method according to the present invention are suitable for application to general-purpose products that are distributed in large quantities such as food.

  The present invention can be used for a tamper-proof label for determining whether or not to reuse.

  1, 2, 3, 4, 5 ... Anti-tamper labels, 1c, 3c, 5c ... Peripheral parts of tamper-proof labels, 1c1, 3c1, 5c1 ... First peripheral parts, 1c2, 3c2, 5c2,. .... Second peripheral part, 1c3, 3c3, 5c3 ... Third peripheral part, 1c4, 3c4, 5c4 ... Fourth peripheral part, 10, 30, 50 ... Cut, 12 ... Adhesive layer (First adhesive layer), 12c: side surface of the adhesive layer, 13 ... base material, 13a ... surface of the base material, 13c ... side surface of the base material, 14, 54 ... code Pattern, 141, 541 ... cord, 141c ... side of cord, 15 ... second adhesive layer, 16 ... coating layer, 8, 9 ... adherend

Claims (2)

A tamper-proof label that can be used by attaching to an adherend, removing it from the attached adherend, and then re-applying it after being attached to the adherend.
A pressure-sensitive adhesive layer and a base material are laminated, a code pattern is provided on the surface of the base material opposite to the pressure-sensitive adhesive layer side, and a second pressure-sensitive adhesive layer and a coating layer are further provided on the code pattern. Are stacked in order ,
The base material is not separated into a plurality of layers in the thickness direction,
When looking down from above, the adhesive layer and the substrate, or the adhesive so as to divide the code pattern into two or more regions by connecting two different points among the peripheral portions of the tamper-proof label. The agent layer, the base material, and the code pattern are provided with continuous cuts, and when the tamper-proof label is removed from the adhered adherend, the code pattern is irreversibly shifted from the cuts. Anti-tamper label characterized by being made into. Affixing the tamper-proof label according to claim 1 to an adherend through the adhesive layer,
Compare the initial information acquired from the code pattern of the tamper-proof label before or immediately after application to the adherend, and the latest information acquired from the code pattern on the adherend after the initial information acquisition, When the latest information is the same as the initial information, it is determined that the tamper-proof label is not reused, and the code information has a deviation from the notch, so that the latest information is A method for determining whether or not a tamper-proof label is reused, wherein the tamper-proof label is determined to be reused when different from the initial information.

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