JP2012203022A - Lamination label - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lamination label which is difficult to be fabricated or disguised by peeling and reuse.SOLUTION: The lamination label is composed of a plurality of layers. In the lamination label, a lower sheet to be adhered on an object to be adhered has a peeling layer on a top face and an adhesive layer on a back face, and an upper sheet placed on the lower sheet has an adhesive layer on a back face, and is adhered peelably to the lower sheet, and at least the upper sheet is provided with a weak part by laser processing. An intermediate sheet of at least one layer is preferably provided between the upper sheet and the lower sheet, and the intermediate layer has a weak part by laser processing, includes a peeling layer on a top face and an adhesive layer on a back face, and is adhered peelably to the lower sheet through the adhesive layer.

Description

  The present invention relates to a laminated label having a fragile portion for preventing counterfeiting such as forgery, reuse, and tampering, and more particularly to a laminated label that can be peeled for each layer.

  Conventionally, in order to guarantee that the product is a genuine product, a security label attached to the product has been used. However, counterfeiting such as forging a security label and sticking it on a counterfeit product, or peeling off a regular security prevention label and reusing it is forever.

  As technical means for coping with such a forgery problem, it is known to make it difficult to forge by providing a transmission layer on the label, or to use a label whose shape is destroyed when it is peeled off. As the former mode, for example, Patent Document 1 discloses a technique in which a label is produced using a watermarked film, and the authenticity of the label can be determined based on the presence or absence of the watermark. However, ordinary watermarks are easily forged. Also, special watermarks require a dedicated detector for determining their authenticity, resulting in high costs.

  As the latter mode, for example, Patent Document 2 discloses a label provided with a detection unit for preventing forgery made weak by laser processing. Moreover, in patent document 3, the weak base part which consists of the notch cut out with the laser in the transparent base material sheet 1 of the clear label, and the broken line cut out with the laser in a part inside the notch was provided. A clear label is disclosed.

Japanese Patent Laid-Open No. 9-311634 International Publication Stand 2010/101037 Pamphlet Utility Model Registration No. 3164301

  Although the label disclosed in Patent Documents 2 and 3 can prevent impersonation to a certain degree, it is considered preferable to provide a plurality of impersonation detection means in a multifaceted manner in order to prevent imitation more reliably.

  An object of the present invention is to provide a laminated label that is difficult to counterfeit or peel off and reuse.

The laminated label of the present invention that has achieved the above object is characterized by the following items.
[1] A laminated label composed of a plurality of layers, the lower sheet adhered to the adherend has a release layer on the upper surface and an adhesive layer on the rear surface, and the upper sheet superimposed on the lower sheet is A laminated label which has an adhesive layer on the back surface and is detachably bonded to a lower sheet, and at least the upper sheet is provided with a fragile portion by laser processing.
[2] At least one intermediate sheet is provided between the upper sheet and the lower sheet, the intermediate sheet has a weakened portion formed by laser processing, and includes a release layer on the upper surface and an adhesive layer on the back surface. The laminated label according to [1], which is detachably bonded to the lower layer sheet.
[3] The laminated label according to [1] or [2], wherein the upper sheet and the intermediate sheet are provided with separated pieces separated by a cut line, and the separated pieces have identification information unique to the adherend.
[4] The laminated label according to [3], wherein the weakened part is formed in the identification information on the separation piece.
[5] The laminated label according to any one of [1] to [4], wherein the fragile portion is formed in an uncut bridging portion of a closed drawing.
[6] The laminated label according to any one of [1] to [5], wherein the lower sheet is provided with a weakened portion by laser processing.

The laminated label of the present invention is described as follows from another viewpoint.
The first aspect is a laminated label composed of a plurality of layers, the lower sheet to be adhered to the adherend has a release layer on the upper surface and an adhesive layer on the rear surface, and the upper sheet superimposed on the lower sheet is It has an adhesive layer on the back and is peelably bonded to the lower sheet. At least the upper sheet is provided with a separation piece separated by a cut groove, and the separation piece is provided with a fragile part by laser processing. It is a laminated label.
In a second aspect, in the first aspect, at least one intermediate sheet is provided between the upper sheet and the lower sheet, the intermediate sheet has a fragile portion by laser processing, a release layer on the upper surface, and an adhesive on the back surface The adhesive layer is detachably bonded to the lower layer sheet by the adhesive layer, and each intermediate layer is provided with a separation piece separated by a cut groove, and the separation piece is provided with a weakened portion by laser processing. It is characterized by being.
The third aspect is characterized in that, in the first or second aspect, the weakened part is formed in the identification information on the separation piece.
A fourth aspect is characterized in that, in the first to third aspects, the fragile part is formed in an uncut bridge part of a closed drawing.

The laminated label disguise act determination system of the present invention is constituted by, for example, the following technical means.
That is, the laminating label judgment system of the present invention comprises a laser control terminal having an input device, a label management terminal having an input device, a display device and a database, and has a release layer on the surface, A laminating label determination system comprising a lower sheet having an adhesive layer on the back surface and an upper sheet having an adhesive layer on the back surface and peelably laminated on the lower sheet, and the laser control terminal is The database terminal is provided with means for providing, in a specified position or shape, a weakened portion formed by forming a cut portion by laser processing on the upper sheet and the lower sheet based on the processing information input from the input device. Corresponding to the identification information based on the means for storing the position or shape of the vulnerable portion in the database in association with the storage device and the identification information input from the input device Characterized in that it comprises means for displaying the position or shape of the weakened portion. Preferably, in the system, the laser control terminal is provided with means for providing a separation piece separable by a cut line formed by laser processing on the upper sheet based on processing information input from the input device, and input from the input device. Based on the processed information, means for providing a separation piece on the lower sheet that can be separated by a separation line composed of a cut portion formed by laser processing and an uncut portion constituting a fragile portion at a position overlapping with the cut line of the upper sheet Be prepared.

The laminated label of the present invention has the following effects or advantages.
(1) In the laminated label of the present invention, only the lower sheet is firmly adhered to the adherend with difficulty in peeling, and the sheet constituting the upper layer of the lower sheet can be peeled to the lower sheet through the peeling layer. When the label is peeled off, the fragile portion is destroyed and a part of the weak portion remains in the lower layer, and the integrity of the entire label cannot be maintained. Therefore, it is almost impossible to disguise by reusing the original label.
(2) Since the laminated label of the present invention has a fine fragile portion by laser processing, it is extremely difficult to forge the label.
(3) In the laminated label of the present invention, each peeled sheet, in particular, the sheet constituting the upper layer of the lower sheet is provided with a separation piece as necessary, and identification information unique to the adherend is printed or engraved on the separation piece. Therefore, if the adherence distribution stage or end customer peels them off and attaches them to a postcard, etc., and returns them to the manufacturer or seller, the manufacturer or seller will be able to manage the adherend product distribution management, customer management, It can be used as a sales promotion means.
(4) Since the laminated label of the present invention can optically or electromagnetically detect fragile parts, particularly the difference in identification information and displacement, history management can be easily performed by a personal computer terminal, portable terminal, etc. via a network system. Can be used for distribution management.

It is a top view which shows the typical lamination label of this invention. It is sectional drawing which shows the typical lamination | stacking label of this invention, (A) is the aspect which made the separation piece incision the depth which penetrates an upper sheet, (B) is the aspect which made the separation piece incision the depth which penetrates a lower sheet | seat. Show. It is a top view of the lamination | stacking label of the state which peeled off the outer frame of the upper sheet | seat. It is a top view of the state which isolate | separated the upper sheet | seat and the lower sheet | seat completely, and also isolate | separated the separation piece of the upper sheet | seat from the outer frame. It is an enlarged view of a hollow character. It is a rear view of a lower sheet. It is a top view which shows typically another aspect of the peeling layer of the lamination | stacking label of this invention, (A) is the aspect which provided the peeling layer partially, (B) is the aspect which provided the shaded peeling layer partially. Indicates.

  The present invention relates to a laminated label having a weakened portion formed by laser processing. This laminated label is formed by laminating a plurality of sheets, and is stuck to a release paper so as to be peeled when not in use. Although the multilayer label of the present invention includes a multilayer label having three or more layers, an example of a two-layer label composed of an upper sheet and a lower sheet will be described below.

  The laminated label of the present invention exemplified below is constituted by forming a weakened portion by laser processing on a label body produced by laminating an upper sheet on a lower sheet via a release layer. Here, the fragile portion is a drawing or uncut cross-linked portion cut or half-cut by a laser, and means a portion whose breaking strength is weaker than the peeling strength of the upper sheet with respect to the peeling layer of the lower sheet. Hereinafter, the “cut portion” refers to a laser-cut portion including a half cut. Identification information such as a production number is displayed on the upper sheet and / or the lower sheet. This identification information is formed by cutting the upper sheet by laser processing and drawing it with cutout characters (hereinafter sometimes referred to as “inline cut characters”) or border characters (hereinafter also referred to as “outline cut characters”). The By providing a cut portion that penetrates the upper sheet, the surface of the lower sheet is exposed. In an aspect in which identification information is not displayed on the lower sheet, the identification information displayed on the upper sheet at the cut portion becomes invisible when the upper sheet is peeled off.

  On the contrary, the lower sheet may be formed by drawing identification information by laser processing. That is, the upper sheet identification information and the lower sheet identification information are formed of the same characters, symbols, figures, and the like, and a detection unit is provided that is configured to make the lower sheet identification information visible through a cut portion that penetrates the upper sheet. When there is a discrepancy between the identification information of the upper sheet and the identification information of the lower sheet, the detection unit can determine that the label is peeled off and reattached. Laser drawing on the lower sheet may be performed by irradiating the upper sheet surface with laser, and drawing on the upper sheet and the lower sheet at the same time. After providing the cut part on the upper sheet, the lower sheet is passed through the upper sheet cut part. You may make it draw. In the latter case, for example, as shown in FIG. 5, it is possible to configure a detection unit that combines outline cut characters having an outer circumference that is approximately the same size as the inner circumference of the inline cut characters.

Furthermore, it is preferable that identification information such as a production number is displayed on the upper sheet and the lower sheet, and a separable separation piece surrounded by an outer frame is provided. Display promotional information (for example, coupons, giveaway information, application information, etc.) on the outer frame or separation piece formed on the upper sheet, and use it as a campaign label or application ticket attached to application forms or postcards. .
On the lower sheet, authentication information (cover) and information such as advertisements can be drawn or printed in a manner hidden behind the upper sheet, and management information and information such as advertisements can be displayed when the upper sheet is peeled off.

  The character which comprises identification information is provided with the bridge | crosslinking part formed in the fine width by laser processing. This bridging portion constitutes a fragile portion that can be easily broken. When the attached label is peeled off, it can be visually determined that the bridging portion has been broken. The uncut width of the cross-linked portion is weakened by, for example, narrow design so that “laser processing width or uncut width of the cross-linked portion <adhesive strength of each sheet <breaking strength of each sheet”. The specific uncut width of the cross-linked portion is governed by the type of display body, the type of product to be attached, the packaging material, the form, and other various factors, so it cannot be specified unconditionally, but is preferably less than 400 μm, For example, it is set within a range of 20 to 200 μm.

In order to form such a fine-crosslinked portion, laser processing must be performed in an inert gas atmosphere such as nitrogen, argon, helium, or carbon dioxide. For example, when fine processing with a processing width of 200 μm or less is performed on a thin sheet with a thickness of 200 μm or less with a laser beam with a short wavelength of about 9.3 μm, there is a high probability that a laser burn scar will remain. At this time, it is preferable to apply the inert gas while suppressing the wind pressure.
Laser processing using an inert gas is also effective in controlling the depth of the cut portion with high accuracy by changing the laser intensity. That is, when performing gradation display described later, laser processing is performed in an inert gas atmosphere.

In the present invention, there is no limit on the upper limit of the font size of the cut character string. By laser processing in an inert atmosphere for creating cut character strings, in principle, the lower limit of the fragile portion is 2 to 12 points in terms of font size conversion from the point of view of the material and application of the label sheet. It is. When the font size of the character string is large, this fragile portion may be provided in the uncut bridge portion.
Here, in the character punching process, the threshold value of the visual legibility of a character string is generally 5 points. Since it is difficult to interpret visually when the number is less than 5 points, it is preferable that the identification information that requires visibility is approximately 5 points or more, and it is preferable to provide a weak part. Since it is difficult to read a picture, especially a character, it is suitable for use as a covert that conceals the intention of preventing label forgery to a third party. The covert may be drawn or printed on the upper sheet or the lower sheet.

  It is preferable that the separation piece and the outer frame of the lower sheet have a border line formed by a cut portion and an uncut portion as a boundary. In order to weaken the uncut portion, a sewing line or a half cut line may be formed there.

It is possible to determine the camouflage action by associating the position and shape of the fragile part or the uncut part with the identification information and managing the identification information. That is, when the identification information displayed on the laminated label is input to the label management terminal, the position or shape of the weakened portion or uncut portion displayed on the display device, and the weakened portion or uncut portion of the actual laminated label When the positions and shapes of the parts are different, it is possible to detect that the camouflage action has been performed.
For example, in the management numbers (identification information) in the 1000 range, the upper sheet is provided with a weak part with a width of 20 μm as shown in FIG. 5, and in the management numbers in the 2000 series, the weak part with a width of 100 μm is provided in the upper sheet. In the case where the left and right sides are provided opposite to each other, it is disclosed that when the position of the fragile portion is in the left-right direction or the width is 100 μm in the management numbers in the 1000s, it is determined that the camouflage action has been performed. .
As another mode, when the management number of the 1000 series is provided with the uncut portion of the lower sheet at the upper right and the lower left, and with the management number of 2000 series, the uncut portion is provided at the upper left and the lower right, the management number of the 1000 series It is disclosed that when it is found that the position of the uncut portion is in the upper left and the lower right, it is determined that a camouflage act has been performed.
The scope of the present invention includes a storage device in which a database in which the identification information and the position and shape of the fragile portion or the uncut portion are managed is stored, and a processing portion that determines an impersonation action based on information registered in the database. A camouflage action determination system including a label management terminal that controls a laser device that controls a laser device for processing the label is also included.

It is preferable that the upper sheet and the lower sheet have different colors. For example, when the brightness of the upper sheet is lower than that of the lower sheet, the visibility of the identification information of the lower sheet that is visible through the cut portion of the upper sheet is improved. . In this case, it is preferable that the depth of the cut portion penetrates the upper sheet and does not cut the surface of the lower sheet, or the brightness of the cut surface of the lower sheet is higher than that of the upper sheet.
Further, the depth of the cut portion may be changed stepwise, and the information displayed on the upper sheet or the lower sheet may be displayed in gradation. That is, the information formed on the paper (sheet) may be displayed with different colors by changing the depth of the cut portion of the sheet having different color layers in a stepwise symmetrical manner. Such a drawing mode is not only a forgery-preventing pattern, but also the identification information of the lower sheet is highlighted so that it is visually beautiful, and it is also possible to visually determine that it is a cut part instead of printing. Furthermore, by performing image processing on the color change of gradation display, it becomes easy to detect an error product in the label manufacturing stage.

  The material of the upper sheet and the lower sheet is not limited as long as laser processing is possible, and pulp paper, synthetic paper, various plastic films, and synthetic resin film sheets subjected to various chemical treatments and coating treatments can be used. The material to be used is selected from the viewpoint of processability, chemical resistance, durability, handleability, versatility, etc., depending on the application. For example, YUPO (registered trademark) can be used as the synthetic paper. As the synthetic resin film sheet material, almost all materials except chlorine-containing materials can be used. For example, polyethylene terephthalate (PET), polyethylene naphthalate, polyethylene, polypropylene (PP), polyacetal, acrylonitrile / butadiene / styrene copolymer Film sheets such as coalescence, fluorocarbon resin, polyetherimide, polyether ether ketone, polyimide, polyamide, etc. can be used. In addition, these films may be provided with a special coloring or protective coating containing metal as a top coat, or a flexible and elastic coating layer such as a flexographic coating. With these materials, laser mark processing in which laser processing is stopped at the top coat or flexo coating layer can be applied.

  The thickness of the upper sheet can be appropriately selected from the range of, for example, 20 to 500 μm from the viewpoint of laser processability, but is preferably in the range of 80 to 300 μm from the viewpoint of ease of processing. On the back surface of the upper sheet, an adhesive layer formed by applying a paste (for example, acrylic adhesive, starch paste, latex) is provided.

  The lower sheet is preferably made of a material that is weaker than the upper sheet, specifically, a material that is inferior in breaking load and elongation at break. On the back surface of the lower sheet, an adhesive layer formed by applying a paste (for example, an acrylic adhesive or a rubber adhesive) is provided.

  The release paper generally comprises a paper as a base material, a release layer that contacts the adhesive layer, and a sealing layer that prevents the release agent from penetrating into the base. For the substrate, semi-bleached paper, high-quality paper, glassine paper or the like is used depending on the application. A polyethylene layer is often used for the sealing layer, and the thickness is several to several tens of μm. The base material such as glassine paper having low permeability may not have a sealing layer. In the case of a highly permeable substrate, the sealing layer is coated with a clay coating agent or polyvinyl alcohol. It is common to use a silicone resin known as a release agent for the release layer. A material having such a strength that the adhesive strength causes breakage in combination with the shape of the material sheet is used. In the laminated label of the present invention, even when an adhesive that is easy to stick and peel is used, since it has a fragile portion, it can be prevented from being reused. The selection of the adhesive is appropriately selected according to the purpose, mode, environment and the like for which the laminated label is used.

An example of the laser processing procedure of the label in the present invention will be described.
There is no particular limitation on the character font used to create the laser cut character string. Arbitrary fonts that can be read by a personal computer or a combination of images such as symbols and figures may be used if necessary.
As a first step, the font necessary for the character string is read into the graphic software of the font processing personal computer, and the character width of the font is set as shown in FIG. A part is erased by the eraser function, and a part corresponding to the uncut bridging portion 16 is formed.
As a second step, the outline of the font is extracted, and the obtained processed font is transferred to the laser control personal computer.
As a third step, an inline cut character is created by punching out the character component (bag) of the font with a laser, or an outline character is created by cutting only the contour extracted from the character component of the font. At this time, thermal denaturation due to laser may occur on the laser beam irradiation side of the label sheet, and bulge traces may remain, or scattered fragments of the label sheet may adhere to the irradiation side surface due to laser irradiation and may be contaminated. Therefore, in order to prevent these, it is possible to apply a diluted solution of water or a surfactant or a starch paste solution to the irradiated surface of the label sheet, and wash it after laser processing. Use of water is suitable for the dilution of the surfactant, and the dilution concentration may be about 10%.

  As a fourth step, the irradiation condition of the laser irradiation apparatus is set by the laser control personal computer. For example, in the case of a carbon dioxide laser, main laser irradiation conditions are output power, pixel density, condensing size, focal length, focal depth, and the like. In the laser processing of the inline cut character of the present invention, although it varies depending on the material of the label sheet, the cut character, the size of the bridging portion, etc., the laser output is practically 20 to 50 W, the pixel density is 250 to 600 ppi, and the light collecting size is 25 to 50 μm, a focal length of 37.5 to 50 mm, and a focal depth of about 760 μm are preferable. When the setting is completed, the laser beam is irradiated based on the set value, and the inline cut character string is punched from the label sheet along the outline of the processed font.

  Hereinafter, details of the present invention will be described by way of examples, but the present invention is not limited to the examples.

  The laminated label 1 which concerns on an Example is affixed on the top | upper surface (upper surface) of the screw cap for sealing the bottle for drinks. The laminated label 1 is configured by laminating an upper sheet 10 and a lower sheet 20, and is stuck to a release paper 30 so as to be peelable when not in use (see FIG. 2). The upper sheet 10 is composed of an outer frame 11 and a separating piece 12, and the lower sheet 20 laminated with the upper sheet 10 is similarly composed of an outer frame 21 and a separating piece 22 (see FIG. 4).

The laminated label 1 according to the embodiment has a structure shown in FIG.
The upper sheet 10 includes a top coat 101, an upper sheet main body layer 102, and an adhesive layer 103, and can be peeled at the upper sheet peeling position shown in FIG. The top coat 101 is, for example, a PET film. The upper sheet main body layer 102 is made of milky white PET and has a thickness of about 50 μm. The reason why PET is used is that it has better heat resistance than PP (polypropylene). The adhesive layer 103 is formed of an acrylic adhesive and has a thickness of about 20 μm.
The lower sheet 20 includes a lower sheet separation layer 201, a lower sheet main body layer 202, and a lower sheet adhesive layer 203, and can be peeled at the lower sheet peeling position shown in FIG. The lower sheet separation layer 201 is a release layer formed of silicone and has a thickness of about 4 to 6 μm. The lower sheet body layer 202 is formed of a YUPO (registered trademark) label sheet and has a thickness of about 80 μm. The lower sheet adhesive layer 203 has a thickness of about 20 μm.
The release paper 30 is a glassine paper coated with silicone and has a thickness of about 65 μm.

FIG. 1 shows a laminated label 1 when not used or pasted. In this state, the border character 23 of the lower sheet 20 is visible through the upper sheet 10 and the cutout character 13. A product name and a serial number are displayed on the separation piece 12 surrounded by the cut line 2. The product name is printed in advance, and the serial number is indicated by the cutout characters 13.
The cut line 2 is a cut frame that penetrates the upper sheet 10. The cut line 2 may not be a substantially rectangular frame, but may be a straight line or a curve that separates small pieces. Further, the adhesive layer 103 provided on the back surface of the upper sheet 10 is configured to have a relatively weak adhesive force as compared with the adhesive layer 203 provided on the back surface of the lower sheet 20. Thereby, each of the outer frame 11 and the separation piece 12 can be separated with a weak force.
It is preferable that the adhesive force of the upper sheet 10 to the lower sheet 20 is weaker than the adhesive force of the lower sheet 20 to the adherend. Each adhesive force of the upper sheet 10 and the lower sheet 20 may be adjusted by changing the type of adhesive used, or may be adjusted by changing the crosslinking density when a cross-linking adhesive is used. It may be adjusted according to the shape. According to the shape of the release layer, the strongest adhesive strength is an aspect in which the lower sheet separation layer 201 is not provided on the lower sheet 20. Next, as shown in FIG. 7A, the adhesive strength is strong in a mode in which a release layer is provided at the center portion (or the outer edge portion) of the lower sheet separation layer 201. At this time, as shown in FIG. 7B, the adhesive strength may be adjusted by forming the lower sheet separation layer 201 in a shaded or dot shape. Similarly, the adhesive layer may be provided in a part, or may be formed in a mesh shape or a dot shape.

  As shown in FIG. 3, when the outer frame 11 of the upper sheet 10 is separated from the lower sheet 20, the outer frame 21 of the lower sheet 20 is exposed and the characters “SECURITY” printed on the lower sheet main body layer 202 are revealed. It is. Although not provided in this embodiment, a covert may be provided on the outer frame 22 of the lower sheet 20. Since the separation of the outer frame 11 of the upper sheet 10 can be performed with a weak force, when the laminated label 1 is peeled off for the purpose of reuse, the outer frame 11 is peeled off first, and the shape of the laminated label is collapsed. When reattaching, the upper sheet 10 and the lower sheet 20 act so that the positions are shifted. In addition, it is good also as the operation | use used for the use which affixes the separated outer frame 11, the separated piece 12, the outer frame 21, the separated piece 22, or those combinations to a campaign application form.

  FIG. 4 shows a state in which the upper sheet 10 and the lower sheet 20 are completely separated and the separation piece 12 is separated from the outer frame 11. In addition, in FIG. 4, the below-mentioned uncut part 4 is abbreviate | omitting illustration. A hollow character 13 formed on the separation piece 12 is a character that is hollowed out while leaving the outline portion of the character. For the cutout character 13, for example, a character cut portion 15 that forms a cutout character that can be used by a computer is created by burning with a laser. In this case, when all the line portions of the cutout character 13 are burned out, the island portion 14 is dropped, so that an uncut bridging portion 16 that connects the upper sheet 10 and the island portion is formed (see FIG. 5). The depth of the cutout character 13 is a depth penetrating the upper sheet 10 (see FIG. 2). Therefore, the surface of the lower sheet 20 can be visually recognized through the cutout characters 13.

  A border character 23 formed on the separation piece 22 of the lower sheet 20 is a character obtained by cutting out the outline (periphery) of the character. The border character 23 is drawn by forming a cut portion that penetrates the upper sheet 10 and does not penetrate the lower sheet 20 by a laser. The border character 23 is the same character as the cut-out character 13 and is similarly provided with a bridging portion that prevents the island portion from falling off. The size of the border character 23 is set such that the entire border character 23 can be visually recognized from the through hole of the cut character 13. Specifically, the dotted line portion in FIG. 5 becomes the border of the border character 23 that can be seen through the cut character 13. Since it is difficult to draw the outline character 23 visually recognized through the cut-out character 13, it becomes a forgery prevention pattern. Since the lower sheet 20 has higher brightness than the upper sheet 10 and there is a step in the character cut portion 15, the border characters 23 of the lower sheet 20 are displayed with emphasis.

  The bridging portion provided in the outline character 23 constitutes a fragile portion that is destroyed when the laminated label 1 attached to the object is peeled off. For this reason, it is preferable to form a bridge part narrowly, and in order to weaken a bridge part, a sewing machine line and a half cut line may be formed in a bridge part. Laser microfabrication is performed in an inert gas atmosphere in order to form an extremely fine cross-linked portion.

  As shown in FIG. 6, the lower sheet 20 is provided with a cut line cut portion 3 and a cut line uncut portion 4 that penetrate through the separation piece 22. A separation line composed of the cut portion 3 and the uncut portion 4 is formed at a position overlapping the cut line 2. That is, the positional relationship between the cut part 3 and the cut line 2 is as indicated by reference numeral 301 in FIG. 2B, and the positional relationship between the uncut part 4 and the cut line 2 is as indicated by reference numeral 401 in FIG. 2A. In FIG. 6, the cut part 3 and the uncut part 4 are highlighted for convenience of explanation. It is preferable to provide a plurality of uncut portions 4. In FIG. 6, although the uncut part 4 is provided in the position which becomes point symmetrical or line symmetrical, it is not limited to this. The uncut portion can be formed at an arbitrary position. By managing the uncut portion with a database associated with a management number such as a serial number, it is possible to determine the authenticity based on the correspondence between the position of the uncut portion and the management number.

  An adhesive layer 203 is formed on the back surface of the lower sheet 20 and is adhered to the release paper 30 when not used. The lower label 20 is peeled off from the release paper 30, and the laminated label 1 is adhered by bringing the back surface of the lower sheet 20 into contact with the adherend. The adhesive layer 203 of the lower sheet 20 is made of an adhesive that is sufficiently stronger than the adhesive layer 103 of the upper sheet 10. Therefore, if the laminated label 1 is to be peeled off from the adherend without any special intention, only the upper sheet 10 is peeled from the lower sheet 20 as shown in FIG. In order to peel the laminated label 1 from the lower sheet 20, it is necessary to use a tool such as a razor. However, when a tool is used, the fragile uncut portion 4 is coupled with the adhesive force of the adhesive layer 203. It will be destroyed. That is, the shipper can determine whether or not the label is reattached depending on whether or not the uncut portion 4 of the lower sheet 20 remains.

[Upper sheet test]
Laser cut 10 points 13 characters are created for each of 20 types of cross-linked widths of 20μm, 100μm, 200μm, 400μm, and 500μm, each of which is replaced with 10 each, and the remaining 10 are not replaced When observed with a stereoscopic microscope having a magnification of 20 times, a good determination result could be obtained at 20 to 400 μm depending on the presence or absence of shape collapse.

[Lower sheet test]
20 types of 20mm, 100μm, 200μm, 400μm and 500μm widths of uncut part 4 by laser processing are prepared, each of which is replaced by 10 sheets, and the remaining 10 sheets are not replaced by 20 times magnification. When observed with a stereomicroscope, a good determination result could be obtained depending on whether or not the uncut portion 4 was broken at 20 to 400 μm.

According to the laminated label of the present embodiment described above, it is possible to easily detect a camouflage action by a check based on the presence / absence of deviation of characters formed on the separation piece and a check based on the presence / absence of breakage of the fragile portion. Moreover, since the laminated label of the present embodiment is formed by superimposing hollow characters and border characters by laser microfabrication, it is extremely difficult to produce a forged label.
In this embodiment, it is affixed to the top surface of the screw cap, but the affixing mode is not limited to this. For example, it may be affixed to the joint between the cap and the container.

The laminated label of the present invention can be widely used as security labels for various products, products, and parts, including containers for food and drink and cosmetics. For example, it can be suitably used for beverages, cosmetic bottles and lids (crowns, screw caps, maxi caps, etc.).

DESCRIPTION OF SYMBOLS 1 Laminated label 2 Cut line 3 Cut line cut part 4 Cut line uncut part 10 Upper sheet 11 Outer frame 12 of upper sheet Separation piece 13 of upper sheet Cut-out character (inline cut character)
14 Island part 15 Character cut part 16 Uncut bridge part 20 Lower sheet 21 Outer frame 22 of lower sheet Separation piece 23 of lower sheet Border character (outline cut character)
30 Release paper 101 Top coat 102 Upper sheet main body layer 103 Upper sheet adhesive layer 201 Lower sheet separation layer 202 Lower sheet main body layer 203 Lower sheet adhesive layer 301 Separation piece cut cut portion 401 Separation piece cut uncut portion

Claims (6)

A laminated label composed of a plurality of layers,
The lower sheet to be adhered to the adherend has a release layer on the upper surface and an adhesive layer on the back surface.
The upper sheet superimposed on the lower sheet has an adhesive layer on the back surface, and is peelably bonded to the lower sheet.
A laminated label in which at least the upper sheet is provided with a weakened portion by laser processing.   At least one intermediate sheet is provided between the upper sheet and the lower sheet, the intermediate sheet has a fragile portion formed by laser processing, is provided with a release layer on the upper surface and an adhesive layer on the back surface, and the lower layer is formed by the adhesive layer. The laminated label according to claim 1, wherein the laminated label is releasably adhered to the sheet.   The laminated label according to claim 1 or 2, wherein the upper sheet and the intermediate sheet are provided with separated pieces separated by a cut line, and the separated pieces have identification information unique to the adherend.   The laminated label according to claim 3, wherein the fragile portion is formed in the identification information on the separation piece.   The laminated label according to any one of claims 1 to 4, wherein the fragile portion is formed in an uncut bridging portion of a closed drawing.   The laminated label according to any one of claims 1 to 5, wherein the lower sheet is provided with a weakened portion by laser processing.