JP2020046477A - Information concealment label - Google Patents

Abstract

To prevent restoration of an information concealment label and to make it easy to detect illegal reading of information.SOLUTION: A label 1 comprises: lower paper 3 that can be stuck to a target; and upper paper 2 arranged in a layer on the surface, opposite the target, of the lower paper 3, thereby forming a covering area on the surface, and which can be removed from the covering area so that it cannot be restored. A code mark M externally readable after the removal of the upper paper 2 from the covering area is provided on the lower paper 3 or upper paper 2 in an area overlapping the covering area as viewed from above. The lower paper 3 includes a fragile layer that can be broken when peeled from the target. The upper paper 2 includes a read prevention layer that prevents the code mark M from being read from outside when the upper paper 2 is not removed from the covering area.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an information security label.

For convenience such as forgery prevention and authenticity determination of an article, for example, a manufacturer or the like may give code information to the article to assure authenticity. The user of the article can check the authenticity of the article by querying the database or the like supplied by the manufacturer or the like for the code information given to the article.
For example, Patent Literature 1 discloses a sheet-shaped non-contact data carrier that indicates the authenticity of an attached article, and is capable of further preventing unauthorized removal from the attached state. A contact data carrier is described.

Japanese Patent No. 5092789

However, the above conventional techniques have the following problems.
The sheet-shaped non-contact data carrier described in Patent Literature 1 has a cut to prevent peeling of the base layer when the base layer is peeled from the outer edge. For this reason, it is difficult to cleanly remove the entire sheet-shaped non-contact data carrier from the article. Therefore, it is also difficult to convert the sheet-shaped non-contact data carrier to another article and convert it.
However, since the information for certifying the authenticity of the article is stored in a non-contact readable IC chip, a third party who does not have the right to know the data for certifying the authenticity can use the sheet-shaped non-contact data carrier. Without peeling, it is also possible to illegally obtain data that proves authenticity.
If it is found that a third party has illegally read data from the sheet-shaped non-contact data carrier, for example, a countermeasure such as invalidating the read data in a database for authenticity authentication can be considered.
However, in the case of the sheet-shaped non-contact data carrier of Patent Document 1, even if data is read, no trace remains on the sheet-shaped non-contact data carrier, so that the above-described measures cannot be taken. There is.

  The present invention has been made in view of the above-described problem, and has as its object to provide an information concealment label that can prevent re-use and can easily detect that information has been illegally read.

  In order to solve the above-mentioned problem, an information security label according to an aspect of the present invention is laminated on a first sheet that can be adhered to an object to be pasted, and a surface of the first sheet opposite to the object to be pasted. By forming a covering region on the surface by the above, comprising a covering body that can be irretrievably removed from the covering region, in a range overlapping the covering region in plan view, the first sheet or the covering body, An externally readable code mark is provided after removal of the coating from the coating area, and the first sheet includes a brittle layer that is destroyed when peeled off from the object to be attached. The body includes an anti-reading layer that prevents reading of the code mark from the outside when the covering is not removed from the covering area.

  In the information security label of the above aspect, the cover is formed of a second sheet bonded to the first sheet via an adhesive layer disposed on a peripheral portion of the cover area, and the second sheet is It has a perforation that penetrates in the layer thickness direction and has an easy rupture property in a rupture path along the peripheral edge of the coating region, and the perforation is ruptured in the rupture path, so that the first sheet is broken. Part may be peeled off.

  In the information security label of the above aspect, the perforation may have a branch cut branching from the break path toward the inside of the covering region in a plan view.

  In the information security label according to the above aspect, the perforation may have a Y-shaped cut in plan view.

  In the information security label of the above aspect, the read prevention layer may include an aluminum vapor-deposited layer.

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

  ADVANTAGE OF THE INVENTION According to the information concealment label of this invention, while being used by re-attachment, it can detect easily that the information was read illegally.

FIG. 2 is a schematic plan view illustrating an example of an information security label according to the first embodiment of the present invention. It is AA sectional drawing in FIG. FIG. 2 is a schematic plan view showing a removed piece in the information security label according to the first embodiment of the present invention, and a label body from which the removed piece has been removed. It is BB sectional drawing in FIG. FIG. 4 is an enlarged view of a portion C in FIG. 3. FIG. 4 is an enlarged view of a portion D in FIG. 3. It is a typical perspective view explaining an operation of an information security label of a 1st embodiment of the present invention. It is a schematic plan view of an information concealment label of a second embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In all the drawings, the same or corresponding members are denoted by the same reference numerals, and the common description is omitted, even when the embodiments are different.

[First Embodiment]
An information security 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 information security label according to the first embodiment of the present invention. FIG. 2 is a sectional view taken along line AA in FIG. FIG. 3 is a schematic plan view showing a removed piece in the information security label according to the first embodiment of the present invention and a label body from which the removed piece has been removed. FIG. 4 is a sectional view taken along line BB in FIG. FIG. 5 is an enlarged view of a portion C in FIG. FIG. 6 is an enlarged view of a portion D in FIG.

As shown in FIG. 1, the label 1 (information concealment label) of the present embodiment has, for example, a rectangular outer shape in 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 a plan view may be a polygonal shape other than a quadrangle, a circle, an ellipse, or the like. For example, the outer shape of the label 1 in a plan view may be a shape in which an appropriate uneven shape is added to an outer peripheral portion such as a polygonal shape, a circular shape, or an elliptical shape.
The label 1 is used by being attached to an article. The type of the article to which the label 1 is attached is not particularly limited.
FIG. 1 illustrates the outermost surface when the label 1 is attached. The label 1 holds therein information associated with an article in the form of a code mark M. On the outermost surface of the label 1, a top paper 2 (cover, second sheet) is arranged. The upper paper 2 covers the code mark M unreadable.
In the present embodiment, the code mark M is formed by printing on a lower sheet 3 described later.

The upper paper 2 has an easy-break line portion 2h. The easy break line portion 2h is composed of a plurality of cuts penetrating in the thickness direction of the upper paper 2.
The upper paper 2 can be broken along the easy-break line portion 2h. In the present embodiment, the easy-break line portion 2h can be broken along a bottle-shaped break path in plan view. The break path of the easy-break line portion 2h extends inward from a point P near the center of the first side S1 (the lower side in the figure) of the outer shape of the label 1, and extends along the first side S1 and the second side S2 (the left side in the figure). Side), the third side S3 (upper side in the figure), the fourth side S4 (the right side in the figure), and the inside of the upper paper 2 along the outer shape of the first side S1, and the center of the first side S1 The bottle shape is closer to the point Q closer to the fourth side S4 than the point P.
When all the easy break lines 2h are broken along the break path, the upper paper 2 can be separated into a non-removed portion 2A outside the break path and a removed piece 2B inside the break path.

Hereinafter, the state of the label 1 in which the easy-break line portion 2h is not broken is referred to as an unopened state, and the state of the label 1 in which at least a part of the easy-break line portion 2h is broken is referred to as an open state. In the opened state, the state of the label 1 in which the easy-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-break line portion 2h is completely broken. The state of No. 1 is referred to as a completely opened state.
In the unopened state of the label 1, the surface of the lower paper 3 described later is covered with the upper paper 2. In particular, in the present embodiment, the covering with the upper paper 2 can be released at least in a range overlapping the code mark M in plan view. In the area covered by the top paper 2, the area where the covering can be released is referred to as a "covered area". In the present embodiment, the area covered by the upper paper 2 is an area inside the fracture path in plan view. That is, the covering region is a region that overlaps with a range that becomes the removed piece portion 2B in a plan view.
In the readable state of the label 1, it is possible to uncover at least a part of the covered area by turning over the broken portion of the upper paper 2 on the covered area. In short, in the readable state, the upper paper 2 has been removed from the covering area (completely opened state), or is in a state equivalent to the removed state (even if the removed piece 2B is not completely removed, the removed piece 2B is removed). This means that at least a part of the code mark M can be exposed). Hereinafter, when it is said that the upper paper 2 (removal piece 2B) has been removed from the covering area, a state equivalent to the removal is also included.
In the completely opened state, the removal piece 2B can be completely removed from the label 1.

In the present embodiment, the easily breakable line portion 2h includes, for example, perforations J2, perforations J1, and perforations J3.
The perforation J2 includes 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 easily 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 into a path extending inward from the point P toward the second side S2 and a path extending inward from the point Q toward the fourth side S4.
As shown in FIG. 1, each perforation J2 widens from the points P and Q toward the end points p and q. Between each perforation J2, near the points P and Q, an opening end 2C corresponding to the bottle-shaped neck of the non-removed portion 2A is formed.

The perforation J1 is formed by connecting a plurality of cuts having a substantially Y-shape in plan view. Each cut of the perforation J1 includes a main cut Jc and branch cuts Ja and Jb.
The main cut Jc is a straight or curved cut formed on the fracture path.
The branch cuts Ja and Jb are V-shaped cuts in plan view connected to the ends of the main cuts Jc. The branch cut Ja is a linear cut extending to the outer peripheral side of the label 1 with respect to the break path. The branch cut Jb is a straight cut extending to the inner circumferential side of the label 1 with respect to the break path.
Each cut in the perforation J1 is 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 break 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 closest to the first side S1 in the perforation J1 near the second side S2 is adjacent to the end point p closest to the second side S2 in 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 closest to the first side S1 in the perforation J1 near the fourth side S4 is adjacent to the end point q closest to the fourth side S4 in the perforation J2 with a perforation gap N therebetween.

The perforation J3 is composed 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 each of the perforations J1 closer to the second side S2 and the ends of the perforations J1 closer to the fourth side S4 closer to the third side S3. It is formed on the fracture path. A perforation gap N is provided between the end of the perforation J3 facing the perforation J1 near the second side S2 and the perforation J1 near the second side S2. Similarly, a perforation gap N is provided between the end of the perforation J3 facing the perforation J1 near the fourth side S4 and the perforation J1 near the fourth side S4.

In a plan view, the code mark M in the present embodiment is formed inside (the covering region) the break path in which the easy break line portion 2h is formed. The code mark M indicated by a broken line in FIG. 1 is, for example, a visible image representing two character strings of a character string “ABCDEFG” and a 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 unique to an article or information unique to an article group including a plurality of articles. For example, it is more preferable that the information represented by the code mark M is information indicating that the article is manufactured by a regular manufacturer and has passed a regular inspection standard and thus has authenticity. For example, the information represented by the code mark M may be information indicating that the article has authenticity in that the article is sold through a regular sales channel.
The information represented by the code mark M may be directly displayed by a character string read visually, or may be obtained by decoding the character string read visually using a decoding unit such as a database. Is also good.

The means for reading the code mark M is not limited to visual inspection. For example, as a reading unit of the code mark M, an appropriate reading sensor such as a camera, a laser scanner, an optical sensor, an electrostatic sensor, and an electromagnetic sensor may be used. The information of the code mark M read by the reading unit may be decoded by an appropriate decoder, signal processing device, image processing device, or the like.
For example, as the code mark M, a code other than a character string, a symbol, a symbol mark, a logo mark, a light and dark pattern, a color arrangement pattern, an image pattern, and the like may be used. As the code mark M, an appropriate mark that can be decoded based on a code (rule) may be used. The 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 a cross-sectional configuration of the label 1.
The label 1 includes a label body 1A (information concealment label) to be attached to an article, and a release paper 6 for protecting an adhesive 3a described later. The label 1 is an information security label in a storage mode or a distribution mode, and the label body 1A is an information security label in a use state.
FIG. 2 illustrates an example in which the label body 1 </ b> A and the release paper 6 have the same outer shape in plan view. However, as long as the release paper 6 is large enough to cover the adhesive 3a described later, the label body 1A and the release paper 6 may have different sizes in plan view. For example, the outer shape of the release paper 6 may have a shape such that at least a part thereof protrudes from the outer shape of the label body 1A. For example, a plurality of label bodies 1A may be attached on one piece of 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 4 (adhesive layer).

In the present embodiment, the outer shape of the lower paper 3 is the same as the outer shape of the upper paper 2. The outer edge of the lower paper 3 and the outer edge of the upper paper 2 overlap each other in a plan view.
In the base paper 3, the adhesive 3a, the brittle paper 3b (brittle layer), and the anchor layer 3c are laminated in this order from the release paper 6 to the adhesive 4.
The adhesive material 3a has a bonding strength that is not easily peeled off from the article to be bonded and the brittle paper 3b described later. As the material of the adhesive material 3a, an appropriate material can be selected according to the material to be attached, the material of the brittle paper 3b, the use environment of the article, and the like. For example, as the material of the adhesive 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 is brittle and easily broken by an external force that attempts to peel off the label main body 1A from the application target. The brittle paper 3b has the same outer shape as the upper paper 2 in plan view.
As the material of the brittle paper 3b, for example, brittle synthetic paper (polypropylene film), woodfree paper (paper with a chemical pulp content of 100%), and recycled paper (dissolved waste paper into a fibrous form and re-punched it) Paper). Here, a brittle synthetic paper is a synthetic paper having such characteristics that it is broken before being deformed when a stress is applied, or is slightly deformed.
In the present embodiment, the adhesive 3a is attached to the entire surface of the brittle paper 3b on the adhesive 3a side. However, when the brittle paper 3b is destroyed, if a part of the brittle paper 3b can remain on the object to be pasted together with the adhesive 3a, the adhesive 3a is laminated on a part of the brittle paper 3b. You may.

The anchor layer 3c is laminated on the surface of the brittle paper 3b on the side opposite to the adhesive 3a. A code mark printing layer 5 is formed between the anchor layer 3c and the upper paper 2.
The anchor layer 3c and the code mark printing layer 5 constitute the surface of the undersheet 3 on the side opposite to the adhesive 3a.
The code mark printing layer 5 is made of a cured product of the ink distributed so as to display the code mark M. Here, the code mark printing 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 an area surrounding the code mark M itself). May be formed. In the present embodiment, as an example, the code mark printing layer 5 forms a positive image of the code mark M.
The code mark printing layer 5 may be formed by single color printing or multicolor printing. When the code mark printing 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.
The printing method for forming the code mark printing layer 5 is not particularly limited. For example, the code mark printing 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 printing layer 5 and preventing the ink before curing of the code mark printing layer 5 from penetrating and diffusing into the brittle paper 3b.
The material of the anchor layer 3c may be appropriately selected according to the characteristics of the ink forming the code mark printing layer 5. For example, when the code mark printing layer 5 is formed by inkjet printing, an acrylic resin-based anchor, a polyester resin-based anchor, or the like may be used as the material of the anchor layer 3c. For example, when the code mark printing layer 5 is formed by offset printing, an acrylic resin-based anchor, a polyester resin-based anchor, or the like may be used as the material of the anchor layer 3c.

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

The base paper 3 has a plurality of cuts penetrating in the thickness direction in order to promote the breakage of the brittle paper 3b when the base paper 3 is peeled off from the object to be pasted.
The shape and number of cuts are not particularly limited. However, in order to prevent the diversion of the label 1 after peeling, it is more preferable that the cut has a shape that induces a break pattern such that a part of the backing paper 3 remains on the object to be stuck when peeling. .

In the present embodiment, cuts C1 and C2 are formed as shown by broken lines in FIG.
The cuts C1 are formed at the four corners of the lower sheet 3 respectively. The shape of the cut C1 in plan view is an L-shape composed of two straight lines parallel to the outer shape line of the corner. The bent portion of the cut C1 faces in the same direction as the outer shape of the corner. The cut C1 is formed in a range overlapping the non-removed portion 2A in plan view.
As shown in FIG. 2, the cut C1 penetrates in the thickness direction of the base paper 3.
The cut C2 is formed in the vicinity of an intermediate portion in the longitudinal direction of the second side S2 of the outer shape of the label 1. The cut C2 extends two each from 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 particularly shown, the cut C2 penetrates in the thickness direction of the lower sheet 3 like the cut C1.

The adhesive material 4 is an adhesive layer for firmly bonding the lower paper 3 and the non-removed portion 2A of the upper paper 2. In the present embodiment, the adhesive 4 is formed on the anchor layer 3c in a range overlapping with the non-removed 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 printing layer 5, and more preferably greater than the layer thickness of the code mark printing layer 5.
When the thickness of the adhesive material 4 is larger than the thickness of the code mark printing layer 5, an air layer is formed between the code mark printing layer 5 and the upper paper 2. For this reason, it is more difficult to read the code mark M from the side of the upper paper 2 as compared with the case where the code mark print layer 5 and the upper paper 2 are in close contact.

  As the material of the adhesive 4, when an external force acts to forcibly separate the adhesive state between the adhesive 4 and the lower paper 3 or the upper paper 2, the base material of the adhesive 4 is broken, and It is more preferable to use a material that makes it difficult to bond or repair the bonded state. Examples of such a material include, for example, a UV-curable acrylic-based strong adhesive.

  In the present embodiment, the upper paper 2 is composed of a first coat layer 2a, a second coat layer 2b, a base material 2c, a metal deposition layer 2d (read prevention layer), a first print layer 2e, and a second print layer 2a. The print layer 2f and the third coat layer 2g are laminated in this order.

The first coat layer 2a is provided mainly for the purpose of improving the surface smoothness of the bonding surface between the upper paper 2 and the adhesive 4 more than the surface smoothness of a base material 2c described later. The first coat layer 2 a forms the surface of the upper paper 2 on the lowermost paper 3 side in the label 1.
As the material of the first coat layer 2a, a material having high adhesive strength and adhesion to the adhesive 4 is used.
As a material of the first coat layer 2a, it is more preferable to use a material capable of preventing curling due to moisture absorption into the base material 2c described later. However, when a necessary moisture absorption preventing function is obtained by the second coat 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 coat layer 2a has a moisture absorption function. Lower materials may be used.
For example, as a material of the first coat layer 2a, an acrylic resin-based varnish or a polyester resin-based varnish may be used as long as it is non-silicone or non-wax.
The layer thickness of the first coat layer 2a is more preferably 1 μm or more and 10 μm or less, further preferably 1 μm or more and 5 μm or less.

The second coat layer 2b is disposed between the first coat layer 2a and a base material 2c described later so as to be laminated on each. The second coat layer 2b is provided mainly for the purpose of preventing curling of the base material 2c described below due to moisture absorption.
The second coat layer 2 b does not contact the adhesive 4. Therefore, as long as the first coat layer 2a and the base material 2c can be firmly laminated, the adhesive strength to the adhesive 4 may be lower than that of the first coat layer 2a.
The second coat layer 2b also has a function as a base layer for the first coat layer 2a. Therefore, as the material of the second coat layer 2b, a material that can improve the surface smoothness of the base material 2c is more preferably used.
For example, the material of the second coat layer 2b may be selected from a material group 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, further preferably 1 μm or more and 5 μm or less.

  As described above, the example in which the materials of the first coat layer 2a and the second coat layer 2b are different has been described. However, the first coat layer 2a and the second coat layer 2b can prevent the substrate 2c from absorbing moisture and have a smooth surface. May be formed of the same material that improves the quality. That is, the first coat layer 2a and the second coat layer 2b may be formed by repeatedly applying the same material. However, in this case, since a clear interface cannot be discriminated between the first coat layer 2a and the second coat layer 2b, one coat layer made of a single material is substantially formed on the base material 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 the present embodiment.
For example, examples of the material of the base material 2c include high quality paper, synthetic paper, PET (polyethylene terephthalate), PP (polypropylene), PE (polyethylene), and the like. From the viewpoint that the material cost can be reduced, it is more preferable that the material of the base material 2c is high quality paper.
In the example shown in FIG. 2, high quality paper having a thickness of about 50 μm is used as the base material 2c.

When the code mark M is covered with the top paper 2, the metal deposition layer 2 d reduces the light transmittance of the top paper (2 to such an extent that the code mark M cannot be read from outside through the top paper 2. For example, when the code mark M is drawn as a positive image, the amount of light that enters the top paper 2 from outside the top paper 2 and is reflected by the code mark M and returns outside the top paper 2 Similarly, the amount of light that enters the upper paper 2 from the outside of the upper paper 2 and is reflected by the lower paper 3 excluding the code mark M and returns to the outside of the upper paper 2 is represented by Lb. If | Lm−Lb | is a light amount that cannot be detected by the reading unit, the code mark M cannot be read.
In that the information represented by the entire code mark M becomes unreadable, the metal deposition layer 2d may be provided in a range overlapping 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 an appropriate pattern that covers the code mark M so that it cannot be read in a plan view.

As the metal material for forming the metal deposition layer 2d, a material having a large reflectance at the reading wavelength used for the reading unit may be used. Alternatively or alternatively, a material having a high absorptance at the reading wavelength used for the reading means may be used. For example, an aluminum deposited layer may be used as the metal deposited layer 2d in that the reflectance is increased.
As the layer thickness of the metal deposition layer 2d, an appropriate layer thickness that can obtain the above-described light transmittance is used. However, the metal deposition layer 2d has a layer thickness that does not hinder the breakage of the easily breakable line portion 2h.
For example, when the reading means is visual and the code mark printing layer 5 is colored with visible light, the metal deposition layer 2d may be formed of an aluminum deposition layer having a thickness of 1 nm or more and 500 nm or less.

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

The first print layer 2e and the second print layer 2f are provided to form an image above the metal deposition layer 2d. The first print layer 2e and the second print layer 2f are each formed of ink colored in an appropriate color.
Since FIG. 2 is a schematic diagram, the first print layer 2e and the second print layer 2f are drawn so as to cover the entire surface of the metal deposition layer 2d. However, at least one of the first print layer 2e and the second print layer 2f may be formed intermittently in the plane direction according to the image.
For example, a region that is not covered by the first print layer 2e and the second print layer 2f is a region where the metal deposition layer 2d is visible from the outside. In this case, since the metal deposition layer 2 d is an image portion having a metallic luster, a high-quality image can be displayed on the surface of the upper paper 2.
For example, the first print layer 2e may be formed in a region covering the entire base material 2c for the purpose of forming an image ground. The first print layer 2e may be colored to have a high reflectance such as white, for example, or may be colored to have a low reflectance such as black, for example.
For example, the second print layer 2f may be patterned to represent an appropriate character string, symbol string, image, or the like.
At least one of the first print layer 2e and the second print layer 2f may be particularly formed in a region overlapping the code mark M in plan view. In this case, in the unopened state, the code mark M has a function of further preventing the code mark M from being read from the outside, so that a read prevention layer can be formed together with the metal deposition layer 2d.

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

The third coat layer 2 g forms the outermost surfaces of the label 1 and the upper paper 2. The third coat layer 2g is provided for the purpose of improving the scratch resistance and the blocking resistance of the upper paper 2.
As the material of the third coat layer 2g, an appropriate material having good abrasion resistance and blocking resistance is used. For example, as a material suitable for the third coat layer 2g, an acrylic resin-based varnish containing silicone oil or wax, or an acrylic resin-based varnish containing filler such as silica, calcium carbonate, magnesium carbonate, and the like can be given.
The layer thickness of the third coat layer 2g is more preferably 1 μm or more and 10 μm or less, and still more preferably 1 μm or more and 5 μm or less.

Next, the operation of the label 1 and the label main body 1A will be described using an example in the case of an information security label for authenticity determination.
FIG. 7 is a schematic perspective view illustrating the operation of the information security label according to the first embodiment of the present invention.

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

When the label main body 1A attached to the article is in an unopened state, the code mark M is unreadable by the upper paper 2. That is, the metal vapor deposition layer 2d is formed on the upper paper 2 in a range that covers at least the code mark M in plan view. As a result, since the external light and the reflected light of the external light on the code mark printing layer 5 are attenuated, the pattern of the code mark M cannot be read using the external light.
Therefore, it is not possible to acquire 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 "user") may make an inquiry about the authenticity of the article by accessing the manufacturer's database from an Internet site when he / she wants to confirm the authenticity of the article. Can be.
In this case, the user opens the label body 1A and reads the information of the code mark M. Specifically, the user removes the opening end 2C and pulls the removal piece 2B toward the third side S3.
In the easy-break line portion 2h, the perforation gap N is successively broken by an external force received from the user, so that the easy-break line portion 2h breaks along the break path. At this time, the work of the external force is consumed by breaking the perforation gap N, and the external force is temporarily released. For this reason, the external force from the user for peeling the upper paper 2 from the lower paper 3 does not reach a magnitude necessary for peeling the non-removed portion 2A from the lower paper 3. Therefore, the external force transmitted from the non-removed portion 2A to the lower sheet 3 does not reach the size at which the lower sheet 3 is broken.

For example, at the perforations J2 and J3, the perforation gap N between the ends of the adjacent cuts is broken, and the adjacent perforations gradually connect to enlarge the cut.
Similarly, at 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, so that the cut is enlarged. In particular, at the perforation J1, branch cuts Ja and Jb opened in a V-shape in the breaking direction of the perforation gap N to be broken are formed. Even if the breaking direction of the perforation gap N deviates from the breaking path, the break is guided along the breaking path when reaching the branch cuts Ja and Jb, because the cut is guided to the main break Jc.

In this way, when the user breaks the easy break line portion 2h until the user can read, the user can visually recognize the code mark M. The user may read the code mark M by an appropriate reading unit instead of viewing (visually).
The user can further open the label 1 so that the label 1 is completely opened. In this case, as shown in FIG. 3, the removal piece 2B is separated from the label main body 1A. The label main body 1A remains in a state of being pasted on the pasting target O. Inside the non-removed portion 2A, a cutout EA is formed along the fracture path.
As shown in FIGS. 3 and 4, the anchor layer 3 c and the code mark M of the base paper 3 are exposed in a region surrounded by the cut edge EA.
In the outer peripheral portion of the removal piece portion 2B, a cutout EB is formed along the breaking path except that the original outer shape of the upper paper 2 remains between the points P and Q.

Each of the cuts EA and EB alternately shows a flat surface or a curved surface where the cut line of the perforation is separated and a fracture surface where the perforation gap N is broken.
For example, as shown in FIG. 5, in the cut edge EA formed by breaking the perforation J1, the perforation separation surface Ej and the fractured 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 fractured surface En is formed by breaking the perforation gap N. For this reason, it takes various shapes according to the breaking characteristics of the material of each layer of the upper paper 2. For example, when the base material 2c is high-quality paper, irregularities are formed on the fractured surface En by exposing the paper fibers. The fracture surface En is not formed by a smooth flat surface or a curved surface. Therefore, the fracture surface En is a surface rougher than the perforation separation surface Ej. In FIG. 5, a zigzag line schematically indicates that the fractured surface En is a rough surface.

  For example, as shown in FIG. 6, in the cutout EB formed by breaking the perforation J1, the perforation separation surface ej and the fractured surface en are alternately arranged. The perforation separation surface ej is a surface on the side of the removed piece 2B of the main cut Jc. Like the fractured surface En, the fractured surface en is formed by breaking the perforation gap N. For this reason, the fracture surface en is a surface that is rougher than the perforation separation surface ej. In FIG. 6, a zigzag line schematically indicates that the fracture surface en is a rough surface.

The fractured surfaces En and en become obstacles to restoration when the removal piece portion 2B is fitted to the original position in the non-removal portion 2A to restore the state before separation. For example, when the removal piece portion 2B is fitted, the removal piece portion 2B cannot be completely pushed into its original position due to friction between the fractured surfaces En and en, and a seam rises or a step occurs.
For this reason, even if the label main body 1A is opened and the removed piece portion 2B is returned to its original position, it is easily understood that the label has been opened by observing the surface of the upper paper 2.
Further, in the present embodiment, a branch cut Jb extends inside the removal piece 2B. For this reason, as shown in FIG. 7, when the removal piece part 2B is flipped up in the opening process, the branch cut Jb is caused to undergo a shearing deformation or the gap between the surfaces of the branch cut Jb is opened by an external force.
Thereby, the tongue piece T sandwiched between the fractured surface en and the branch cut Jb is easily deformed in the thickness direction. Such a tongue piece T is easily deformed in the direction opposite to the pushing direction due to the frictional force received from the fractured surface En when the removal piece 2B is pushed into the original position. And the fracture surface En are more likely to form a step.
As described above, in the label body 1A of the present embodiment, it is difficult to fit the removed piece 2B back to the non-removed portion 2A so that the trace of restoration cannot be recognized.
The above is an example of the case where the removed piece 2B is returned after the completely opened state. However, the same applies to the case where the removed removed piece 2B is returned from the opened state or the readable state.

When the user opens the strip 2B and reads the code mark M, the user can check the information of the code mark M on the manufacturer's site to know whether or not the code mark M is registered as a genuine product of the manufacturer. it can.
Since the user has the right to open the label body 1A to check whether the label is genuine, there is no need to put back the removal piece 2B so as not to know that the label has been opened.

On the other hand, a forger may try to forge an article using the label body 1A.
For example, a counterfeiter may try to impart authenticity to a counterfeit product by peeling off the unopened label body 1A from the article and attaching it to the counterfeit product.
However, the label body 1A is stuck to the sticking target O via the base paper 3 including the brittle paper 3b. Therefore, the brittle paper 3b is broken by an external force acting on the brittle paper 3b when the base paper 3 is peeled.
In particular, in this embodiment, since the cuts C1 and C2 are formed in the base paper 3, the brittle paper 3b is easily broken 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, the breakage tends to proceed along the cut C1, so that the lower sheet 3 inside the cut C1 remains on the bonding target O.
For example, when the label body 1A is peeled off from the side where the cut C2 is formed, the breakage is likely to progress along the cut C2. Therefore, the base paper 3 is torn and peeled off, or the base paper 3 is separated from the cut C2 as a boundary. A part may remain on the paste target O.
As described above, since the label body 1A cannot be peeled off from the sticking target O in an intact state, the forger can remove the label body 1A and attach it to the counterfeit product, thereby imparting authenticity to the counterfeit product. Can not.

For example, a counterfeiter opens the label body 1A, reads the code mark M, forges the label 1 having the code mark M, and then attaches the false label to the counterfeit product, thereby imparting authenticity to the counterfeit product. You may try.
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 removal piece 2B to its original position, the label remains unopened on the label body 1A. I will. Accordingly, the manager of the article immediately notifies the manufacturer of the code mark M of the opened label body 1A when the opening mark is found, and determines the article provided with the read code mark M as a counterfeit product. You can modify the database to do so.
Therefore, even if a counterfeit product is distributed, the authenticity is not 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-use and to easily detect that information has been illegally read.

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

As shown in FIG. 8, the label 11 (information concealment label) of the present embodiment includes a label body 11A (information concealment label) instead of the label body 1A of the label 1 of the first embodiment.
The label main body 11A includes an upper paper 12 (cover) instead of the upper paper 2 of the label main body 1A in the first embodiment.
As shown in FIG. 8, the upper paper 12 includes an easy-break line portion 12h instead of the easy-break line portion 2h of the upper paper 2 in the first embodiment.
As described above, the label 11 and the label main body 11A of the present 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. .
Hereinafter, points different from the first embodiment will be mainly described.

The easy break line portion 12h is composed of a plurality of cuts penetrating in the thickness direction of the upper paper 12.
The upper paper 12 can be broken along the easy break line portion 12h. In the present embodiment, the easy break line portion 12h includes a plurality of perforations J1 arranged along a break 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. Perforations J11 extending to the side S2.
The perforation J1 in the present embodiment is composed of the same main cut Jc and branch cuts Ja and Jb as in the first embodiment. The branch cut Ja extends to the outer peripheral side of the label 11 with respect to the break path. The branch cut Jb extends to the inner peripheral side of the label 11 with respect to the break path.

The planar shape of the break path in which the perforations J1 are arranged in the present embodiment has a linear portion 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 connected in this order in an inverted C-shape. The end points X and Y of the fracture path where the perforations J1 are arranged are located at a corner (a lower left corner in the figure) sandwiched between the first side S1 and the second side S2 and a third side S3 and a fourth side S4. They face each other with a diagonal line d connecting the corners (the upper right corner in the figure) sandwiched therebetween.
The main cut Jc and the perforation gap N are alternately formed on such a break path.
Assuming that the point of intersection of the diagonal line d and the fracture path where the perforation J1 is arranged is a point Z, on the V-shaped fracture path from the point X to the point Z, a branch break from an end point near the point X at each main break Jc. Ja and Jb are branched. Similarly, on the V-shaped fracture path from the point Y to the point Z, the branch cuts Ja and Jb branch from the end point near the point Y at each main cut Jc.

  The perforation J11 is composed of a plurality of linear cuts extending on two line segments extending parallel to the diagonal 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 each perforation J11, a strip-shaped opening end 12C extending along the diagonal d is formed.

When the easy-break line portion 12h is completely broken along the break path, the upper paper 12 has a non-removable portion 12A outside the easy-break line portion 12h, a removal piece portion 12B inside the easy-break line portion 2h, It can be separated into
In order to break the easy-break line portion 12h, for example, the opening end 12C is pulled up, and the opening end is moved in the direction along the diagonal d toward the corner where the third side S3 and the fourth side S4 intersect. What is necessary is just to pull 12C. At this time, each perforation gap N of the easy-break line portion 12h is broken by an external force acting on the opening end 12C, so that the perforations J11 and the perforations J1 are sequentially formed along their respective break paths. Is broken.

As described above, the label 11 and the label main body 11A are different from the label 1 and the label main body 1A of the first embodiment in the shape of the break 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, the same operation as in the first embodiment is provided.
That is, according to the label 11 and the label main body 11A of the present embodiment, similarly to the first embodiment, it is possible to prevent re-use and easily detect that information has been illegally read.

  In the description of each of the above embodiments, the case where the lower paper 3 is bonded to the bonding target O via the adhesive 3a and the upper paper 2 (12) is bonded to the lower paper 3 via the adhesive 4 will be described. As explained in the example. However, the lower paper 3 and the upper paper 2 (12) may be bonded to the bonding target O and the lower paper 3 via an adhesive layer other than the adhesive, for example, an adhesive layer. The adhesive that can be used for the adhesive layer is not particularly limited as long as necessary 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 it can form a readable shape. For example, the code mark M may be formed in an uneven shape by stamping, molding, or the like, or may be formed by a removal process such as etching.

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

In the description of each of the above-described embodiments, an example has been described in which the cover is provided with the easily breakable line portions 2h and 12h including the perforations J1, so that the cover can be irretrievably removed from the cover region. .
However, the embodiment of the coating is not limited to the embodiment having the easily breakable line portion including the perforation J1. For example, the easy-break line portion may be formed by a perforation having a cut in a shape different from the Y-shaped cut in the perforation J1. The shape of the cut different from the Y-shape is not particularly limited.
For example, at the perforation J1, a broken 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 the Y-shaped cut or in addition to the Y-shaped cut, a cut such as a straight line, a broken line, a V-shape, or an arc may be used.
Further, for example, the shape in which the cuts are arranged is not limited to a straight line or a gently curved curve that forms a break path such as the bottle shape shown in each of the above embodiments. The shape in which the cuts are arranged is a zigzag shape or a wavy shape in which irregularities are formed on the side centering on the straight or curved break path if broken substantially along the straight or curved break path. There may be. For example, the zigzag perforations may be formed by arranging linear cuts obliquely intersecting the fracture path such that the inclination directions thereof are alternately changed. For example, the zigzag perforations may be formed into a mountain-shaped zigzag shape by combining a linear cut obliquely intersecting the breaking path and a V-shaped cut.
Further, the zigzag or wavy perforations may be configured such that the cuts forming the perforations themselves are formed in a zigzag or wavy shape.
In the case of a zigzag or wavy perforation, it is more difficult to fit the removed piece 2B back to the non-removed portion 2A so that the trace of restoration cannot be seen.
For example, the cover does not have to have the easily breakable line portion. As an example of the case where the coating does not have an easily breakable line portion, there is an example in which the reading prevention layer of the coating is formed by scratch printing. For example, the cover may be formed of a second sheet in which a scratch printing layer is formed on a transparent substrate 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, an example in which the code mark is provided on the first sheet has been described. However, the code mark may be provided on the cover as long as it can be read from the outside after the cover is removed from the cover area.

The preferred embodiments of the present invention have been described above, but the present invention is not limited to these embodiments. Additions, omissions, substitutions, and other modifications of the configuration can be made without departing from the spirit of the present invention.
The present invention is not limited by the above description but is limited only by the appended claims.

1, 11 labels (information confidential labels)
1A, 11A label body (information concealment label)
2,12 Top paper (coating, 2nd sheet)
2A, 12A Non-removed part 2B, 12B Removed piece part 2a First coat layer 2b Second coat layer 2c Base material 2d Metal deposition layer (read prevention layer, aluminum deposition layer)
2e 1st print layer 2f 2nd print layer 2g 3rd coat layer 2h, 12h easy break line part 3 Under paper (1st sheet)
3a Adhesive 3b Brittle paper (brittle layer)
4 Adhesive (adhesive layer)
5 Code mark printing layer 6 Release paper J1, J2, J3, J11 Perforated Ja, Jb Branch cut Jc Main cut M Code mark N Perforated gap O Pasted object

Claims (6)

A first sheet that can be adhered to an object to be pasted;
A coating body that is formed on the surface of the first sheet by being laminated on the surface opposite to the object to be pasted, and that can be irretrievably removed from the coating region;
With
In a range overlapping with the covering region in a plan view, the first sheet or the covering member is provided with a code mark that can be read from the outside after the removal of the covering member from the covering region,
The first sheet,
Including a brittle layer that is destroyed when peeled from the paste target,
The coating is
When the cover is not removed from the cover area, the read-out prevention layer that prevents reading of the code mark from the outside is included.
Information concealment label. The coating is
A second sheet adhered to the first sheet via an adhesive layer disposed on a peripheral portion of the covering area;
The second sheet,
It has a perforation that penetrates in the layer thickness direction and has an easy rupture property in a rupture path along the peripheral edge of the coating region, and the perforation is ruptured in the rupture path, so that the first sheet is broken. Some peel off,
The information security label according to claim 1. The perforation is
Having a branch cut branching from the fracture path toward the inside of the covering region in plan view,
The information concealment label according to claim 2. The perforation is
A cut is formed in a Y-shape in plan view.
The information concealment label according to claim 3. The read prevention layer includes an aluminum deposition layer,
The information concealment label according to claim 1. The code mark is
Is printed on the surface overlapping the covering area in plan view,
The information concealment label according to claim 1.

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