JP7185455B2 - Confidential label - Google Patents

Description

The present invention relates to confidentiality labels.

For convenience such as prevention of forgery of goods and determination of authenticity, for example, there are cases in which code information for guaranteeing authenticity is given to goods by manufacturers or the like. A user of an article can confirm the authenticity of the article by inquiring the code information attached to the article to a database or the like supplied by the manufacturer or the like.
For example, Patent Literature 1 discloses a sheet-shaped non-contact data carrier that indicates the authenticity of an article to which it is attached, and that is capable of further deterring unauthorized removal from the attached state. A contact data carrier is described.

Japanese Patent No. 5092789

However, the conventional techniques as described above have the following problems.
The sheet-shaped non-contact data carrier described in Patent Document 1 has cuts that block the peeling of the base layer when the base layer is peeled off from the outer edge. Therefore, it is difficult to cleanly peel off the entire sheet-shaped non-contact data carrier from the article. Therefore, it is also difficult to transfer the sheet-shaped non-contact data carrier to another article for reuse.
However, since the information that proves the authenticity of the item is stored in a non-contact readable IC chip, a third party who does not have the right to know the data that proves the authenticity can It is also possible to illegally obtain data proving authenticity without peeling off.
If it turns out that a third party has illegally read data from the sheet-shaped contactless data carrier, countermeasures can be considered, for example, invalidating the read data in a database for authentication of authenticity.
However, in the case of the sheet-shaped non-contact data carrier of Patent Document 1, even if the data is read, no trace remains on the sheet-shaped non-contact data carrier, so the above countermeasure cannot be taken. There is

SUMMARY OF THE INVENTION It is an object of the present invention to provide an information concealment label that prevents re-sticking and allows easy detection of unauthorized reading of information.

In order to solve the above problems, an information confidentiality label according to an embodiment of the present invention is laminated on a first sheet that can be adhered to a target, and on the surface of the first sheet opposite to the target. a covering that forms a covering area on the surface and can be irreversibly removed from the covering area, and the first sheet or the covering in a range that overlaps with the covering area in a plan view includes: After removal of the covering from the covered area, a code mark that can be read from the outside is provided, the first sheet includes a brittle layer that is broken when peeled off from the adhered object, and the covering is The body includes an anti-reading layer that prevents the code mark from being read from the outside when the cover is not removed from the covered area, and via an adhesive layer that is arranged only at the peripheral edge of the covered area. The adhesive layer is thicker than the code mark, and an air layer exists between the code mark and the cover. .

In the information concealment label of the aspect described above, the second sheet has a perforation that penetrates in the layer thickness direction and has easy tearability along a tearing path along the peripheral edge of the covering area, and the perforation is may be partly separated from the first sheet by being broken along the breaking path.

In the information confidentiality label of the aspect described above, the perforation may have a branch cut branching from the tear path toward the inner side of the covering area in a plan view.

In the information concealment label of the aspect described above, the perforations may be Y-shaped in plan view.

In the confidential information label of the aspect described above, the anti-reading layer may include an aluminum deposition layer.

In the confidential information label of the aspect described above, the code mark may be printed on the surface overlapping the covering area in a plan view.

According to the information concealment label of the present invention, it is possible to prevent the label from being reattached and to easily detect that the information has been illegally read.

1 is a schematic plan view showing an example of an information confidentiality label according to the first embodiment of the present invention; FIG. FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1; FIG. 3 is a schematic plan view showing a removable piece portion and a label main body from which the removable piece portion has been removed in the information confidentiality label of the first embodiment of the present invention; FIG. 4 is a cross-sectional view taken along the line BB in FIG. 3; FIG. 4 is an enlarged view of a portion C in FIG. 3; 4 is an enlarged view of a portion D in FIG. 3; FIG. FIG. 4 is a schematic perspective view illustrating the action of the information confidentiality label of the first embodiment of the present invention; FIG. 12 is a schematic plan view of the confidential information label according to the second embodiment of the present invention;

Embodiments of the present invention are described below with reference to the accompanying drawings. In all the drawings, even when the embodiments are different, the same or corresponding members are denoted by the same reference numerals, and common explanations are omitted.

[First Embodiment]
A confidential information label according to the first embodiment of the present invention will be described.
FIG. 1 is a schematic plan view showing an example of the confidentiality label according to the first embodiment of the present invention. FIG. 2 is a cross-sectional view taken along line AA in FIG. FIG. 3 is a schematic plan view showing the removable piece portion and the label body from which the removable piece portion has been removed in the information confidentiality label according to the first embodiment of the present invention. 4 is a cross-sectional view taken along the line BB in FIG. 3. FIG. 5 is an enlarged view of a portion C in FIG. 3. FIG. 6 is an enlarged view of a portion D in FIG. 3. FIG.

As shown in FIG. 1, the label 1 (information confidentiality label) of this embodiment has, as an example, a rectangular outer shape in a plan view. However, the outer shape of the label 1 in plan view is not limited to a rectangular shape. For example, the outer shape of the label 1 in plan view may be polygonal, circular, elliptical, or the like other than square. For example, the outer shape of the label 1 in a plan view may be polygonal, circular, elliptical, or the like, with appropriate irregularities added to the outer periphery.
The label 1 is used by being attached to an article. The type of article to which the label 1 is attached is not particularly limited.
FIG. 1 depicts the outermost surface of the label 1 when it is affixed. The label 1 carries information associated with the article in the form of code marks M therein. A cover sheet 2 (cover, second sheet) is arranged on the outermost surface of the label 1 . The upper paper 2 covers the code marks M unreadable.
In this embodiment, the code marks M are formed by printing on the backing paper 3, which will be described later.

The upper paper 2 is formed with an easily breakable line portion 2h. The breakable line portion 2h is composed of a plurality of cuts penetrating through the upper paper 2 in the thickness direction.
The cover sheet 2 can be torn along the easily tearable line portion 2h. In the present embodiment, the easily breakable line portion 2h can be broken along a bottle-shaped breaking path in plan view. The breaking path of the easily breaking line portion 2h extends inward from a point P near the center of the first side S1 (the lower side in the drawing) of the outer shape of the label 1, and extends inward from the first side S1 and the second side S2 (the left side in the drawing). side), third side S3 (upper side in the drawing), fourth side S4 (right side in the drawing), and the outer shape of the first side S1, and then go around the inside of the upper paper 2 to the center of the first side S1. It is a bottle shape that reaches a point Q closer to the fourth side S4 than the point P is.
When the easy-to-break line portion 2h is completely broken along the breaking path, the cover sheet 2 can be separated into the non-removable portion 2A outside the breaking path and the removed piece portion 2B inside the breaking path.

Hereinafter, the state of the label 1 in which the easy-to-break line portion 2h is not broken is called an unopened state, and the state of the label 1 in which at least a part of the easy-to-break line portion 2h is broken is called an unsealed state. Among the unsealed states, the state of the label 1 in which the easy-to-break line portion 2h is broken to the extent that the entire code mark M can be exposed to the outside is called a readable state, and the label in which the easy-to-break line portion 2h is completely broken. The state of 1 is called a completely unsealed state.
In the unopened state of the label 1, the surface of the lower paper 3, which will be described later, is covered with the upper paper 2. As shown in FIG. In particular, in this embodiment, the covering with the upper paper 2 can be removed at least in the range overlapping the code marks M in a plan view. In the area covered by the upper paper 2, the area that can be uncovered is referred to as a "covered area". In this embodiment, the area covered by the upper paper 2 is the area inside the fracture path in a plan view. That is, the covered area is an area that overlaps with the area that will become the removed piece portion 2B in plan view.
In the readable state of the label 1, it is possible to uncover at least part of the covered area by peeling the break in the top paper 2 over the covered area. In short, in the readable state, the top sheet 2 is either removed from the covered area (completely unsealed state) or in a state that is quasi-removed (the removal strip 2B is removed even if the removal strip 2B is not completely removed). At least part of the code mark M can be exposed by turning over). In the following, when it is said that the cover sheet 2 (removed piece portion 2B) is removed from the covered area, it also includes a state equivalent to being removed.
In the completely unsealed state, the removal strip portion 2B can be completely removed from the label 1. FIG.

In the present embodiment, the breakable line portion 2h consists of, for example, perforations J2, J1, and J3.
The perforation J2 consists of a plurality of curved or linear cuts. Each cut of the perforation J2 is adjacent to each other in the longitudinal direction with a perforation gap N shorter than each cut in the longitudinal direction. The length of the perforation gap N may be appropriately set according to the breaking strength of the upper paper 2 so that the breakable line portion 2h is easily broken. The length of the perforation gap N may vary depending on the location (the same applies to the perforation gap N described below).
The perforations J2 are formed in a route extending inward from the point P toward the second side S2 and a route extending inward from the point Q toward the fourth side S4.
As shown in FIG. 1, each perforation J2 widens from points P and Q toward points p and q, which are respective end points. Between the perforations J2, in the vicinity of the points P and Q, an unsealing edge 2C corresponding to the bottle-shaped neck portion of the non-removable portion 2A is formed.

The perforation J1 is formed by a plurality of continuous Y-shaped cuts in plan view. Each cut of the perforation J1 consists of a main cut Jc and branch cuts Ja and Jb.
The main cut Jc is a linear or curved cut formed on the fracture path.
The branch cuts Ja and Jb are V-shaped cuts connected to the end of the main cut Jc. The branch cut Ja is a linear cut extending to the outer peripheral side of the label 1 with respect to the tear path. The branch cut Jb is a linear cut extending toward the inner circumference of the label 1 with respect to the tear path.
The cuts of the perforation J1 are adjacent to each other in the longitudinal direction of the main cut Jc with a perforation gap N shorter than the main cut Jc. However, in the perforation J1, the branch cuts Ja and Jb and the main cut Jc are alternately arranged along the breaking path.

The perforations J1 are formed near the second side S2 and near the fourth side S4, respectively.
In each cut of the perforation J1 near the second side S2, branch cuts Ja and Jb are arranged on the first side S1 side. The end portion closest to the first side S1 of the perforation J1 near the second side S2 is adjacent to the end point p closest to the second side S2 of the perforation J2 with a perforation gap N therebetween.
In each cut of the perforation J1 near the fourth side S4, branch cuts Ja and Jb are arranged on the first side S1 side. The end portion closest to the first side S1 of the perforation J1 near the fourth side S4 is adjacent to the end point q closest to the fourth side S4 of the perforation J2 with a perforation gap N therebetween.

The perforation J3 consists of a plurality of curved or linear cuts. Each cut of the perforation J3 is adjacent to each other in the longitudinal direction with a perforation gap N shorter than each cut in the longitudinal direction.
The perforation J3 extends substantially parallel to the third side S3 between the ends closest to the third side S3 of the perforation J1 closer to the second side S2 and the perforation J1 closer to the fourth side S4. It is formed on the breaking path. A perforation gap N is provided between the end of the perforation J3 facing the perforation J1 closer to the second side S2 and the perforation J1 closer to the second side S2. Similarly, a perforation gap N is provided between the end of the perforation J3 facing the perforation J1 closer to the fourth side S4 and the perforation J1 closer to the fourth side S4.

The code mark M in the present embodiment is formed inside (coated region) of the breakage path where the breakable line portion 2h is formed in plan view. A code mark M indicated by a dashed line in FIG. 1 consists of a visible image representing two character strings, for example, the character string “ABCDEFG” and the character string “0123456”. Therefore, when the code mark M is exposed, the user of the label 1 can read the information represented by the code mark M as a character string.
For example, the information represented by the code mark M may be information specific to an article, or information specific to an article group consisting of a plurality of articles. For example, the information represented by the code mark M is more preferably information indicating that the article is authentic in that the article is manufactured by an authorized manufacturer and has passed authorized inspection standards. For example, the information represented by the code mark M may be information indicating that the article is genuine in that the article has been sold through a regular sales route.
The information represented by the code mark M may be directly displayed by a visually read character string, or may be obtained by decoding the visually read character string using a decoding means such as a database. good too.

The means for reading the code mark M is not limited to visual observation. For example, as means for reading the code mark M, an appropriate reading sensor such as a camera, laser scanner, optical sensor, electrostatic sensor, or electromagnetic sensor may be used. The information of the code mark M read by the reading means may be decoded by an appropriate decoder, signal processor, image processor, or the like.
For example, code marks M other than character strings, symbols, symbol marks, logo marks, contrast patterns, color scheme patterns, image patterns, and the like may be used. As the code mark M, an appropriate mark that can be deciphered based on the code (regulation) may be used. Code may be public or private.
For example, the code mark M may be a QR code (registered trademark) pattern, a barcode pattern, or the like.

FIG. 2 shows the cross-sectional structure of the label 1. As shown in FIG.
The label 1 consists of a label main body 1A (information confidentiality label) to be attached to an article, and a release paper 6 for protecting an adhesive material 3a, which will be described later. The label 1 is an information concealment label in a storage form or a distribution form, and the label main body 1A is an information concealment label in use.
FIG. 2 illustrates an example in which the outer shape of the label body 1A and the release paper 6 match when viewed from above. However, the label body 1A and the release liner 6 may have different sizes in a plan view as long as the release liner 6 is large enough to cover the adhesive material 3a described later. For example, the outer shape of the release paper 6 may have a shape such that at least a part of it protrudes from the outer shape of the label body 1A. For example, a plurality of label bodies 1A may be attached on one release paper 6 .

In the label body 1A, a lower paper 3 (first sheet) and an upper paper 2 are laminated in order from the release paper 6 side. The lower paper 3 and the upper paper 2 are adhered to each other via an adhesive material 4 (adhesive layer).

In this embodiment, the outer shape of the lower sheet 3 is the same as the outer shape of the upper sheet 2 . The outer edge of the lower sheet 3 and the outer edge of the upper sheet 2 overlap each other in plan view.
In the lower paper 3, an adhesive material 3a, a brittle paper 3b (brittle layer), and an anchor layer 3c are laminated in this order from the release paper 6 toward the adhesive material 4. As shown in FIG.
The adhesive material 3a has a sticking strength that makes it difficult to peel off from an article to be stuck and a brittle paper 3b to be described later. As the material of the adhesive material 3a, an appropriate material can be selected according to the object to be adhered, the material of the brittle paper 3b, the usage environment of the article, and the like. For example, as the material of the adhesive material 3a, a solvent-based adhesive, an emulsion-based adhesive, a hot-melt-based adhesive, or the like may be used.

The brittle paper 3b is a sheet member having a strength that makes it brittle and easily broken by an external force that tends to peel off the label body 1A from the sticking object. The brittle paper 3b has the same outer shape as the upper paper 2 in plan view.
Examples of materials for the brittle paper 3b include brittle synthetic paper (polypropylene film), high-quality paper (paper with a chemical pulp content of 100%), and recycled paper (made by dissolving waste paper into fibers and re-plowing it again). paper), etc. Here, the brittle synthetic paper is a synthetic paper having characteristics such that it breaks before deformation occurs when stress is applied, or when it is slightly deformed.
In this embodiment, the adhesive material 3a is attached to the entire surface of the brittle paper 3b on the side of the adhesive material 3a. However, when the brittle paper 3b is destroyed, if a part of the brittle paper 3b can remain on the sticking target together with the adhesive material 3a, the adhesive material 3a is laminated on a part of the brittle paper 3b. may

The anchor layer 3c is laminated on the surface of the brittle paper 3b opposite to the adhesive material 3a. A code mark printed layer 5 is formed between the anchor layer 3c and the upper paper 2. As shown in FIG.
The anchor layer 3c and the code mark printing layer 5 constitute the surface of the backing paper 3 opposite to the adhesive material 3a.
The code mark printing layer 5 consists of a cured product of ink distributed so as to display the code marks M. As shown in FIG. Here, the code mark printed layer 5 may form a positive image of the code mark M (an image of the code mark M itself) or a negative image of the code mark M (an image of the area surrounding the code mark M itself). may form In this embodiment, the code mark printed layer 5 forms a positive image of the code mark M as an example.
The code mark printed layer 5 may be formed by single-color printing or may be formed by multi-color printing. When the code mark printed layer 5 is formed by multicolor printing, for example, a positive image and a negative image of the code mark M may be printed in different colors.
A printing method for forming the code mark printed layer 5 is not particularly limited. For example, the code mark printed layer 5 may be formed by inkjet printing, offset printing, letterpress printing, or the like.
The anchor layer 3c is provided for the purpose of stably adhering the code mark printed layer 5 and preventing the ink of the code mark printed layer 5 before curing from penetrating and diffusing into the brittle paper 3b.
The material of the anchor layer 3c may be appropriately selected according to the properties of the ink forming the code mark printed layer 5. FIG. For example, when the code mark printed layer 5 is formed by inkjet printing, the material of the anchor layer 3c may be an acrylic resin anchor, a polyester resin anchor, or the like. For example, when the code mark printed layer 5 is formed by offset printing, the material of the anchor layer 3c may be an acrylic resin anchor, a polyester resin anchor, or the like.

The anchor layer 3c is made of a material that can be adhered with high strength by an adhesive material 4, which will be described later.
However, the anchor layer 3c may be provided only in the region where the code marks M are formed. As described above, when the anchor layer 3c is not laminated with the adhesive material 4, a material having a low adhesive strength with the adhesive material 4, which will be described later, may be used as the material of the anchor layer 3c.
Further, when the code mark printed layer 5 is stably and clearly formed on the surface of the brittle paper 3b, the anchor layer 3c may not be formed.

The backing paper 3 is formed with a plurality of cuts penetrating in the thickness direction in order to promote breakage of the brittle paper 3b when it is peeled off from the application target.
The shape and number of cuts are not particularly limited. However, in order to prevent the label 1 from being reused after it is peeled off, it is more preferable that the cut has a shape that induces a breaking pattern in which part of the backing paper 3 remains on the object to be stuck when the cut is peeled off. .

In this embodiment, cuts C1 and C2 are formed as indicated by broken lines in FIG.
The cut lines C1 are formed at the four corners of the backing paper 3, respectively. The plan view shape of the cut line C1 is an L shape made up of two straight lines parallel to the outline of the corner. The bent portion of the cut C1 faces in the same direction as the contour of the corner. The cut C1 is formed in a range overlapping with the non-removed portion 2A in plan view.
As shown in FIG. 2, the cut C1 penetrates through the backing paper 3 in the thickness direction.
The cut C2 is formed in the vicinity of the longitudinal middle portion of the second side S2 of the outer shape of the label 1 . Two cuts C2 extend from each of the second side S2 and the fourth side S4. The plan view shape of each cut C2 is a line segment parallel to the first side S1 and the third side S3. Each cut C2 is formed in a range overlapping with the non-removed portion 2A in plan view.
Although not shown, the cut C2 also penetrates the backing paper 3 in the thickness direction like the cut C1.

The adhesive material 4 is an adhesive layer for firmly bonding the bottom sheet 3 and the non-removable portion 2A of the top sheet 2 together. In this embodiment, the adhesive material 4 is formed on the anchor layer 3c in a range that overlaps the non-removable portion 2A in plan view. The layer thickness of the adhesive material 4 is more preferably equal to or greater than the layer thickness of the code mark printed layer 5 , and more preferably greater than the layer thickness of the code mark printed layer 5 .
When the layer thickness of the adhesive material 4 is thicker than the layer thickness of the code mark printed layer 5 , an air layer is formed between the code mark printed layer 5 and the upper paper 2 . Therefore, the code marks M are more difficult to read from the upper paper 2 side than when the code mark printed layer 5 and the upper paper 2 are in close contact with each other.

As for the material of the adhesive material 4, when an external force is applied to forcibly peel off the adhered state of the adhesive material 4 from the bottom paper 3 or the top paper 2, the base material of the adhesive material 4 is broken, and the adhesive material 4 is regenerated. It is more preferable to use a material that makes it difficult to bond or repair the bonded state. Examples of such materials include, for example, UV curable acrylic strong adhesive materials.

In this embodiment, the upper paper 2 includes, from the lower paper 3 side, a first coating layer 2a, a second coating layer 2b, a base material 2c, a metal deposition layer 2d (reading prevention layer), a first printed layer 2e, a second The printed layer 2f and the third coat layer 2g are laminated in this order.

The first coat layer 2a is mainly provided for the purpose of improving the surface smoothness of the bonding surface between the top paper 2 and the adhesive material 4, compared to the surface smoothness of the base material 2c, which will be described later. The first coat layer 2 a forms the surface of the upper paper 2 closest to the lower paper 3 in the label 1 .
As a material for the first coat layer 2a, a material having high adhesion strength and adhesion to the adhesive 4 is used.
As the material of the first coat layer 2a, it is more preferable to use a material that can prevent curling due to moisture absorption to the base material 2c, which will be described later. However, when the necessary moisture absorption prevention function is obtained by the second coating layer 2b described later, or when a material that does not easily absorb moisture is used for the base material 2c described later, the material of the first coating layer 2a has a moisture absorption function. Low material may be used.
For example, as the material of the first coat layer 2a, non-silicone, non-wax acrylic resin varnish, polyester resin varnish, or the like may be used.
The layer thickness of the first coat layer 2a is more preferably 1 μm or more and 10 μm or less, and further preferably 1 μm or more and 5 μm or less.

The second coat layer 2b is arranged between the first coat layer 2a and the base material 2c described later so as to be laminated on each of them. The second coat layer 2b is provided mainly for the purpose of preventing curl due to moisture absorption to the base material 2c, which will be described later.
The second coat layer 2 b does not contact the adhesive 4 . Therefore, the adhesive strength to the adhesive material 4 may be lower than that of the first coat layer 2a as long as the first coat layer 2a and the substrate 2c can be strongly laminated.
The second coat layer 2b also functions as a base layer for the first coat layer 2a. Therefore, as the material of the second coat layer 2b, it is more preferable to use a material capable of improving the surface smoothness of the substrate 2c.
For example, the material for the second coat layer 2b may be selected from the group of materials exemplified as suitable for the first coat layer 2a.
The layer thickness of the second coat layer 2b is more preferably 1 μm or more and 10 μm or less, and further preferably 1 μm or more and 5 μm or less.

As described above, an example in which the materials of the first coat layer 2a and the second coat layer 2b are different has been described. may be made of the same material that provides good That is, the first coat layer 2a and the second coat layer 2b may be formed by coating the same material repeatedly. However, in this case, since it is not possible to distinguish a clear interface between the first coat layer 2a and the second coat layer 2b, substantially one coat layer made of a single material on the substrate 2c is formed.

As the base material 2c, a sheet member having a tear strength that can be easily broken by the easily breakable line portion 2h is used. The substrate 2c is more preferably opaque, but may be transparent in this embodiment.
Examples of materials for the base material 2c include fine paper, synthetic paper, PET (polyethylene terephthalate), PP (polypropylene), and PE (polyethylene). From the point of view of reducing the material cost, it is more preferable that the material of the base material 2c is fine paper.
In the example shown in FIG. 2, fine paper having a thickness of about 50 μm is used as the base material 2c.

When the code mark M is covered with the upper paper 2, the metal deposition layer 2d reduces the light transmittance of the upper paper 2 to such an extent that the code mark M cannot be read from the outside through the upper paper 2. For example, when the code mark M is drawn as a positive image, the amount of light incident on the upper paper 2 from outside the upper paper 2 and reflected by the code mark M to return to the outside of the upper paper 2 is Similarly, let Lb be the amount of light incident on the upper paper 2 from outside the upper paper 2, reflected by the lower paper 3 excluding the code mark M, and returning to the outside of the upper paper 2. At this time, ΔL= If |Lm-Lb| is a light quantity that cannot be detected by the reading means, the code mark M cannot be read.
From the viewpoint that the information represented by the entire code mark M becomes unreadable, the metal deposition layer 2d may be provided in a range overlapping with a part of the code mark M in plan view. In this case, the metal deposition layer 2d is not limited to a solid pattern. The metal deposition layer 2d may be patterned into a suitable pattern that covers the code mark M unreadable in plan view.

As the metal material forming the metal deposition layer 2d, a material having a high reflectance at the reading wavelength used for the reading means may be used. Alternatively, a material with high absorption at the reading wavelength used for the reading means may be used. For example, an aluminum vapor deposition layer may be used as the metal vapor deposition layer 2d in terms of high reflectance.
As for the layer thickness of the metal vapor deposition layer 2d, an appropriate layer thickness that provides the above-described light transmittance is used. However, the metal vapor deposition layer 2d has a layer thickness that does not interfere with breakage of the breakable line portion 2h.
For example, when the reading means is visual and the code mark printed layer 5 is colored with visible light, the metal deposition layer 2d may be formed of an aluminum deposition layer with a layer thickness of 1 nm or more and 500 nm or less.

In this embodiment, as an example, the metal deposition layer 2d is formed as a solid pattern. Furthermore, the metal deposition layer 2d covers the entire surface of the substrate 2c. Therefore, the metal deposition layer 2d also has a function of reducing the moisture absorption of the substrate 2c.
However, if the base material 2c is made of a material that does not easily absorb moisture, the metal deposition layer 2d may be provided only in a region that overlaps the region where the code mark M is formed in plan view.

The first printed layer 2e and the second printed layer 2f are provided to form an image on the upper layer side of the metal deposition layer 2d. The first printed layer 2e and the second printed layer 2f are each formed with ink colored appropriately.
Since FIG. 2 is a schematic diagram, the first printed layer 2e and the second printed layer 2f are drawn so as to cover the entire surface of the metal deposition layer 2d. However, at least one of the first printed layer 2e and the second printed layer 2f may be intermittently formed in the plane direction according to the image.
For example, the area not covered with the first printed layer 2e and the second printed layer 2f is the area where the metal deposition layer 2d is visible from the outside. In this case, since the metal deposition layer 2d becomes an image portion having a metallic luster, a high-class image can be displayed on the surface of the upper paper 2. FIG.
For example, the first printed layer 2e may be formed in a region covering the entire substrate 2c for the purpose of forming the background of the image. The first printed layer 2e may be colored with a color such as white having a high reflectance, or may be colored with a color such as black having a low reflectance.
For example, the second printed layer 2f may be patterned to represent appropriate character strings, symbol strings, images, or the like.
At least one of the first printed layer 2e and the second printed layer 2f may be formed particularly in a region overlapping the code mark M in plan view. In this case, since it has the effect of making it more difficult to read the code mark M from the outside in an unopened state, a reading prevention layer can be formed together with the metal deposition layer 2d.

The printing method for forming the first printed layer 2e and the second printed layer 2f is not particularly limited. For example, examples of the printing method for forming the first printed layer 2e and the second printed layer 2f include offset printing, letterpress printing, flexography printing and the like.

The third coat layer 2g forms the outermost surfaces of the label 1 and the cover sheet 2. As shown in FIG. The third coat layer 2g is provided for the purpose of improving the abrasion resistance and blocking resistance of the upper paper 2. As shown in FIG.
As the material of the third coat layer 2g, an appropriate material that has good scratch resistance and blocking resistance is used. For example, materials suitable for the third coating layer 2g include acrylic resin varnish containing silicone oil or wax, or acrylic resin matte varnish containing fillers such as silica, calcium carbonate, and magnesium carbonate.
The layer thickness of the third coat layer 2g is more preferably 1 μm or more and 10 μm or less, and further preferably 1 μm or more and 5 μm or less.

Next, the action of the label 1 and the label main body 1A will be described using an example of an information concealment label for authenticity determination.
FIG. 7 is a schematic perspective view explaining the action of the confidential information label according to the first embodiment of the present invention.

The label 1 is attached to an article to be attached by peeling off the release paper 6 . That is, the label body 1A is adhered to the surface of the article via the adhesive material 3a.
The code mark M of the label 1 is formed in advance as a mark indicating information unique to the article to be affixed. For example, the character string "ABCDEFG0123456" shown in FIG. 1 may be a serial number unique to the article. The code mark M is associated with information such as the manufacturing factory, manufacturing lot, manufacturing date and time of the article, for example. The display character string of the code mark M and associated information are registered in the manufacturer's database, for example.
This database can be queried from sites on the Internet.

When the label body 1A attached to the article is in an unopened state, the code mark M is covered with the cover sheet 2 so that it cannot be read. That is, the upper paper 2 is formed with a vapor-deposited metal layer 2d in a range covering at least the code mark M in plan view. As a result, the external light and the reflected light of the external light on the code mark printed layer 5 are attenuated, so that the pattern of the code mark M cannot be read using the external light.
Therefore, it is impossible to obtain the information of the code mark M attached to the article without opening the label body 1A.

An authorized user of an article (hereinafter simply referred to as a user) may inquire about the authenticity of the article by accessing the manufacturer's database from a site on the Internet when he or she wishes to confirm the authenticity of the article. can be done.
In this case, the user opens the label body 1A and reads the information of the code mark M. Specifically, the opening edge 2C is pinched and the removal piece 2B is pulled toward the third side S3.
In the easily breakable line portion 2h, as a result of the perforation gaps N being broken one after another by the external force received from the user, the easily breakable line portion 2h is broken along the breaking path. At this time, the work of the external force is consumed and the external force is temporarily released by breaking the perforation gap N. Therefore, the external force applied by the user to peel off the top sheet 2 from the bottom sheet 3 does not reach the magnitude required to peel off the non-removable portion 2A from the bottom sheet 3 . Therefore, the external force transmitted from the non-removing portion 2A to the bottom paper 3 does not reach a magnitude that destroys the bottom paper 3 either.

For example, in the perforations J2 and J3, the perforation gap N between the ends of the adjacent cuts is broken, and the adjacent perforations are gradually joined to enlarge the cut.
Similarly, in the perforation J1, the perforation gap N between the adjacent main cuts Jc is broken, and the adjacent main cuts Jc are connected to each other to enlarge the cut. In particular, the perforation J1 is formed with branching cuts Ja and Jb that open in a V-shape in the breaking direction of the perforation gap N to be broken. Even if the breakage direction of the perforation gap N deviates from the breakage path, since the cuts are guided by the main cutout Jc when reaching the branch cuts Ja and Jb, they are broken along the breakage route.

In this way, the user can visually recognize the code mark M when the user breaks the easily breakable line portion 2h to a readable state. The user may read the code mark M by an appropriate reading means instead of visually (visually).
The user can also continue to unseal the label 1 until it is completely unsealed. In this case, as shown in FIG. 3, the removal piece portion 2B is separated from the label body 1A. The label main body 1A remains stuck on the object O to be stuck. A cut edge EA along the fracture path is formed inside the non-removed portion 2A.
As shown in FIGS. 3 and 4, the anchor layer 3c of the backing paper 3 and the code marks M are exposed in the area surrounded by the cut edge EA.
A cut edge EB along the breaking path is formed on the outer peripheral portion of the removed piece portion 2B, except that the original outer shape of the cover sheet 2 remains between the points P and Q.

In both of the cut edges EA and EB, flat or curved surfaces where the perforations are separated and broken surfaces where the perforation gap N is broken appear alternately.
For example, in the cut edge EA formed by breaking the perforation J1, as shown in FIG. 5, the perforation separation surface Ej and the fracture surface En are alternately arranged. The perforation separation surface Ej is the surface of the main cut Jc on the non-removed portion 2A side. The fracture surface En is formed by the perforation gap N being fractured. Therefore, it takes various shapes according to the breaking properties of the material of each layer of the upper paper 2 . For example, when the base material 2c is fine paper, the broken surface En is exposed to paper fibers and irregular unevenness is formed. Fracture surface En is not formed by a smooth plane or curved surface. Therefore, the fracture surface En is rougher than the perforation separating surface Ej. In FIG. 5, the zigzag line schematically represents that the fracture surface En is a rough surface.

For example, in the cut edge EB formed by breaking the perforation J1, as shown in FIG. 6, the perforation separation surface ej and the fracture surface en are alternately arranged. The perforation separation surface ej is the surface of the main cut Jc on the removal piece portion 2B side. The fracture surface en is formed by breaking the perforation gap N, similar to the fracture surface En. Therefore, the fracture surface en is rougher than the perforation separating surface ej. In FIG. 6, the zigzag line schematically represents that the fracture surface en is a rough surface.

The broken surfaces En, en become an obstacle to restoration when trying to restore the state before separation by fitting the removed piece portion 2B to its original position in the non-removed portion 2A. For example, when the removable piece 2B is fitted, the friction between the fractured surfaces En, en prevents the removable piece 2B from being completely pushed back to its original position, resulting in swelling of the joints and generation of steps.
Therefore, even if the label body 1A is unsealed and the removable piece portion 2B is put back, it can be easily recognized by observing the surface of the upper paper 2 that the label has been unsealed.
Furthermore, in the present embodiment, a branch cut Jb extends inside the removed piece portion 2B. For this reason, as shown in FIG. 7, when the removal piece portion 2B is turned up during the opening process, an external force causes shearing deformation of the branch cut Jb, or opening between the faces of the branch cut Jb.
As a result, the tongue portion T sandwiched between the fracture surface en and the branch cut Jb is easily deformed in the thickness direction. When the removal piece 2B is pushed back to its original position, the tongue T is easily deformed in the direction opposite to the pushing direction due to the frictional force received from the fractured surface En. and the fracture surface En.
As described above, in the label main body 1A of the present embodiment, it is difficult to fit the removed piece portion 2B back to the non-removed portion 2A so as not to show traces of restoration.
The above is an example of fitting back the removable piece portion 2B after the completely unsealed state.

After opening the removal piece 2B and reading the code mark M, the user can know whether the code mark M is registered as a genuine product of the manufacturer by inquiring the manufacturer's site about the information of the code mark M. can.
Since the user has the right to open the label body 1A in order to confirm whether it is a genuine product, there is no need to put back the removable piece 2B so as not to know that the label body 1A has been opened.

On the other hand, a counterfeiter may try to counterfeit an article using the label body 1A.
For example, a counterfeiter may attempt to give authenticity to a counterfeit product by peeling the unopened label body 1A from the article and attaching it to the counterfeit product.
However, the label body 1A is attached to the attachment target O via the backing paper 3 including the brittle paper 3b. Therefore, the brittle paper 3b is destroyed by an external force acting on the brittle paper 3b when the backing paper 3 is peeled off.
In particular, in the present embodiment, since the cuts C1 and C2 are formed in the backing paper 3, the breakage of the brittle paper 3b tends to progress from the cuts C1 and C2.
For example, when the label main body 1A is peeled off from the corner of the label main body 1A, breakage tends to progress along the cut line C1, so that the backing paper 3 inside the cut line C1 remains on the object O to be pasted.
For example, when the label body 1A is peeled off from the side where the cut line C2 is formed, the breakage tends to progress along the cut line C2, so that the bottom sheet 3 is torn and peeled off, or the bottom sheet 3 is torn off or separated from the cut line C2. part of the image remains on the object O to be pasted.
As described above, since the label body 1A cannot be peeled off from the target O to be affixed in an intact state, the counterfeiter cannot give authenticity to the counterfeit product by peeling off the label body 1A and attaching it to the counterfeit product. Can not.

For example, the counterfeiter opens the label main body 1A, reads the code mark M, forges the label 1 having the code mark M, and attaches the false label to the counterfeit product to give authenticity to the counterfeit product. may try to
However, even if the counterfeiter opens the label body 1A of the article on display, secretly reads the code mark M, and then returns the removed piece 2B to its original position, the label body 1A remains unsealed. put away. Therefore, when the mark of unsealing is found, the manager of the article immediately notifies the manufacturer of the code mark M on the unsealed label body 1A, thereby determining the article to which the read code mark M is given as a counterfeit. You can modify the database to
Therefore, even if a counterfeit product is distributed, the authenticity will not be guaranteed by the manufacturer.

As described above, according to the label 1 and the label main body 1A of the present embodiment, it is possible to prevent re-sticking and to easily detect that information has been illegally read.

[Second embodiment]
A confidential information label according to the second embodiment of the present invention will be described.
FIG. 8 is a schematic plan view of the confidential label of the second embodiment of the present invention.

As shown in FIG. 8, the label 11 (information confidentiality label) of this embodiment includes a label body 11A (information confidentiality label) instead of the label body 1A in the label 1 of the first embodiment.
The label body 11A includes an upper paper 12 (cover) instead of the upper paper 2 of the label body 1A in the first embodiment.
As shown in FIG. 8, the cover sheet 12 includes an easily breakable line portion 12h instead of the easily breakable line portion 2h of the cover sheet 2 in the first embodiment.
Thus, the label 11 and the label main body 11A of this embodiment are examples in which the easily breakable line portion 2h in the label 1 and the label main body 1A of the first embodiment is changed to the easily breakable line portion 12h. .
In the following, the points different from the first embodiment will be mainly described.

The breakable line portion 12h is composed of a plurality of cuts penetrating through the upper paper 12 in the thickness direction.
The cover sheet 12 can be torn along the easily tearable line portion 12h. In the present embodiment, the breakable line portion 12h includes a plurality of perforations J1 arranged along a breaking path forming an inverted C-shaped open loop, and a first side S1 and a second side S1 from each end of the open loop. and perforations J11 extending along the sides S2.
The perforation J1 in this embodiment consists of a main cut Jc and branch cuts Ja and Jb similar to those in the first embodiment. The branch cut Ja extends to the outer peripheral side of the label 11 with respect to the breaking path. The branch cut Jb extends to the inner peripheral side of the label 11 with respect to the tear path.

The planar view shape of the breaking path on which the perforations J1 are arranged in the present embodiment is such that linear portions substantially parallel to the second side S2, the third side S3, the fourth side S4, and the first side S1 of the label 11 are formed. , are connected in this order to form an inverted C shape. The end points X and Y of the breaking path on which the perforation J1 is arranged are located at the corner between the first side S1 and the second side S2 (lower left corner in the drawing), the third side S3 and the fourth side S4. They face each other across a diagonal line d connecting the sandwiched corner (upper right corner in the drawing).
Main cuts Jc and perforation gaps N are alternately formed on such a breaking path.
Assuming that the point Z is the intersection of the breaking path on which the perforation J1 is arranged and the diagonal line d, on the V-shaped breaking path from the point X to the point Z, a branch cut is formed from the end point near the point X in each main cut Jc. Ja and Jb are branched. Similarly, on the V-shaped breaking path from point Y to point Z, branch cuts Ja and Jb branch off from the end point near point Y in each main cut Jc.

The perforation J11 consists of a plurality of linear cuts extending on two line segments extending parallel to the diagonal line d. The perforation J11 is formed between the point U and the point Y on the first side S1 and between the point V and the point X on the second side S2. Between the perforations J11, a strip-shaped unsealing edge 12C extending along the diagonal line d is formed.

When the easy-to-break line portion 12h is completely broken along the breaking path, the cover sheet 12 is divided into a non-removable portion 12A outside the easy-to-break line portion 12h, a removable piece portion 12B inside the easy-to-break line portion 2h, can be separated into
To break the easily breakable line portion 12h, for example, the unsealing end portion 12C is pulled up, and the unsealing end portion is moved in the direction along the diagonal line d toward the corner where the third side S3 and the fourth side S4 intersect. 12C should be pulled. At this time, the perforation gaps N of the easily breakable line portion 12h are broken by an external force acting on the opening edge portion 12C, so that the perforation J11 and the perforation J1 are sequentially arranged along their breaking paths. be broken.

As described above, the label 11 and the label body 11A differ from the label 1 and the label body 1A of the first embodiment in the shape of the breaking path. Therefore, except that the outer shape of the removed piece portion 12B is different from the outer shape of the non-removed portion 2A, it has the same effect as the first embodiment.
That is, according to the label 11 and the label main body 11A of the present embodiment, as in the first embodiment, it is possible to prevent re-sticking and to easily detect that the information has been illegally read.

In the description of each of the above embodiments, the case where the lower sheet 3 is adhered to the pasting target O through the adhesive material 3a and the upper sheet 2 (12) is adhered to the lower sheet 3 through the adhesive material 4 is described. explained with an example. However, the lower sheet 3 and the upper sheet 2 (12) may be adhered to the object O and the lower sheet 3, respectively, via an adhesive layer other than an adhesive material, for example, an adhesive layer. The adhesive that can be used for the adhesive layer is not particularly limited as long as the required adhesive strength is obtained.

In the description of each of the above embodiments, an example in which the code mark M is formed by printing has been described. However, the means for forming the code mark M is not limited to printing as long as a readable shape can be formed. For example, the code mark M may be formed in an uneven shape by engraving, molding, or the like, or may be formed by removal processing such as etching.

In the description of each of the above-described embodiments, an example in which the metal vapor deposition layer 2d is included as the anti-reading layer has been described. However, for example, in the upper papers 2 and 12, the metal vapor deposition layer 2d may be deleted when the reading of the code mark M can be prevented by one or more layered portions other than the metal vapor deposition layer 2d. For example, if at least one of the first printed layer 2e and the second printed layer 2f on the top paper 2, 12 is formed in a color, shape, etc. that can prevent the code mark M from being read, the metal deposition layer 2d is omitted. may

In the description of each of the above-described embodiments, an example in which the covering is irretrievably removable from the covering region by providing the easily breaking line portions 2h and 12h including the perforations J1 in the covering has been described. .
However, the form of the covering is not limited to the form having the easy breaking line portion including the perforations J1. For example, the breakable line portion may be formed by perforations having a different shape from the Y-shaped perforations J1. The shape of the cut that is different from the Y shape is not particularly limited.
For example, in the perforation J1, a polygonal line-shaped cut in which one of the branch cuts Ja and Jb is deleted may be used.
For example, in the perforation J1, instead of or in addition to the Y-shaped cut, a straight cut, a broken line-shaped cut, a V-shaped cut, an arc-shaped cut, or the like may be used.
Further, for example, the shape in which the cuts are arranged is not limited to a linear shape or a gently curving curve that constitutes the breaking path such as the bottle shape shown in each of the above embodiments. The shape in which the cuts are arranged is a zigzag or wavy shape in which unevenness is formed laterally around the straight or curved breaking path when the cut is broken substantially along the straight or curved breaking path. There may be. For example, a zigzag perforation may be formed by arranging linear cuts obliquely crossing the breaking path so that the direction of inclination thereof alternates. For example, the zigzag-shaped perforation may be formed by combining a linear cut that obliquely crosses the breaking path and a V-shaped cut to form a chevron-shaped zigzag.
In addition, the zigzag or wavy perforations may be formed by forming the perforations themselves into a zigzag or wavy shape.
If it has zigzag or wavy perforations, it becomes more difficult to fit the removed portion 2B back into the non-removed portion 2A so that the trace of restoration cannot be seen.
For example, the covering does not have to have an easily breakable line portion. As an example of the case where the covering does not have the easily breakable line portion, there is an example in which the anti-reading layer of the covering is formed by scratch printing. For example, the cover may be formed of a second sheet in which a scratch print layer is formed on a transparent base sheet. For example, the covering may be formed by scratch printing itself formed on the first sheet.

In the description of each of the above embodiments, the example in which the code mark is provided on the first sheet has been described. However, code marks may also be provided on the covering, provided that they are externally readable after removal of the covering from the covering area.

Although preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments. Configuration additions, omissions, substitutions, and other changes are possible without departing from the scope of the present invention.
Moreover, the present invention is not limited by the foregoing description, but only by the appended claims.

1, 11 Label (Confidential label)
1A, 11A Label body (Confidential label)
2, 12 Upper paper (cover, second sheet)
2A, 12A Non-removed portions 2B, 12B Removed piece portion 2a First coat layer 2b Second coat layer 2c Base material 2d Metal vapor deposition layer (read prevention layer, aluminum vapor deposition layer)
2e 1st printed layer 2f 2nd printed layer 2g 3rd coat layers 2h, 12h Easily broken line portion 3 backing sheet (first sheet)
3a adhesive material 3b brittle paper (brittle layer)
4 Adhesive material (adhesive layer)
5 Code mark printed layer 6 Release paper J1, J2, J3, J11 Perforation Ja, Jb Branch cut Jc Main cut M Code mark N Perforation gap O Target to be pasted

Claims (8)

a first sheet that can be adhered to an object to be pasted;
a covering that forms a covering area on the surface by being laminated on the surface of the first sheet opposite to the surface to be attached, and that can be irreversibly removed from the covering area;
with
A code mark that can be read from the outside after removal of the covering from the covering area is provided on the first sheet or the covering in a range overlapping the covering area in a plan view,
The first sheet is
including a brittle layer that breaks when peeled off from the pasting object,
The covering is
When the cover is not removed from the cover area, the second code mark includes a reading prevention layer that prevents the code mark from being read from the outside, and is disposed only on the peripheral edge of the cover area. consisting of one sheet and a second sheet adhered thereto,
The layer thickness of the adhesive layer is thicker than the layer thickness of the code mark, and an air layer exists between the code mark and the cover.
Confidentiality label. The second sheet is
It has a perforation that penetrates in the layer thickness direction and has easy breakability in a breaking path along the peripheral edge of the covering area, and when the perforation is broken along the breaking path, the first sheet is separated from the first sheet. some peel off,
The information confidentiality label according to claim 1. The fracture path does not have a portion parallel to the peeling direction when removing the covering,
The information confidentiality label according to claim 2. The fracture path has a rectangular shape in a plan view, and the peeling initiation site of the covering is formed at a corner of the rectangle.
The information confidentiality label according to claim 3. The perforations are
Having a branch cut branching from the fracture path toward the inside of the covered region in a plan view,
The information confidentiality label according to claim 2. The perforations are
Y-shaped cuts are formed in plan view,
The information confidentiality label according to claim 5 . The anti-reading layer comprises an aluminum deposition layer,
The information confidentiality label according to any one of claims 1 to 6 . The code mark is
printed on the surface that overlaps the covered area in plan view,
The information confidentiality label according to any one of claims 1 to 7 .

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