JP2010019913A - Peeling and opening preventive medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a peeling and opening preventive medium capable discriminating forgery or alteration with high accuracy even in conductivity inspection for peeling or re-affixing. <P>SOLUTION: An identification card is formed by successively laminating an upper substrate 6, a second adhesive layer 5", a conductive layer 4, a first adhesive layer 5', a face photograph 12, and a lower substrate 2. The conductive layer 4 has the length L which resonates with the wavelength of a microwave transmitter/receiver 7, and is arranged at six portions having such position relation as partially overlapping the face photograph 12. When the identification card before peeling (c) and after peeling (d) is scanned (b) by the microwave transmitter/receiver 7 to measure the detection voltage, the waveform k before peeling (c) provides a high level detection voltage since the conductive layer 4 has the length which resonates with the wavelength of the microwave transmitter/receiver, and the waveform l after peeling (d) changes into a low level detection voltage since the conductive layer 4 is broken away into two by the peeling and does not resonate with the wavelength of the microwave transmitter/receiver 7 and allows easy transmission of microwaves. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to a peeling and unsealing prevention medium, and in particular, forgery, falsification, etc. by intentionally opening an envelope or the like, or peeling or replacing a layer of a document, card, identification card, etc. In this case, it is a peeling and unsealing medium that can be automatically discriminated by a machine and that can be checked for unsealing.

Conventionally, when mailing a sealed letter containing confidential documents or documents related to personal information, the sealed mouth is folded and glued, and a seal such as "Do not open", "Self-confidential", etc. is stamped, and only the designated party can open. Adhesive labels with partially adjusted adhesive strength of the adhesive layer are affixed to the opening part of envelopes containing compact discs and flexible discs. A portion of the letter “opened” remains on the envelope side, so that it can be determined that the recording medium has been opened.

In addition, when characters, images, etc. are printed on the surface of the substrate with inks that exhibit different colors under ultraviolet light and visible light, and the label is peeled off, the label itself is deformed or destroyed, and ultraviolet light, reference light A method of visually determining by discoloration when a defect such as peeling occurs by providing a collation label (for example, see Patent Document 1) that can be discriminated by irradiating and a discoloration part that discolors when exposed to air. Further, there is a method of providing a layer containing a member that changes due to heat, pressure, etc., and concealing the recording data in the lower layer by applying an external action (for example, see Patent Document 2).

In addition, by printing at least a part of the label printed with letters and patterns on the surface of the plastic film with the adhesive applied on the back surface using a conductive paint, There is a label (for example, refer to Patent Document 3) that electrically determines the authenticity of the label.

In addition, the adhesive used to bond the base materials for the two document substrates to be bonded is a bundle of conductive fibers having a diameter of 0.025 mm or less in a solid at room temperature and a solvent in the adhesive system. By applying this adhesive to a fiber / plastic composite impregnated with a resin that swells or dissolves, mixed with a columnar member cut to a length of 0.1 to 30 mm, this adhesive is applied to form a conductive fiber. Is held in a unique distribution, so that the document is irradiated with microwaves or the like, its reflection or transmission is detected by a detector, and this distribution is confirmed to determine whether the document is authentic or not. There exists a manufacturing method (for example, refer patent document 4).

In recent years, there has been a tendency to take a photograph of the owner's face as image information for a card or a portable medium. Therefore, by arranging an adhesion-inhibiting layer between the layers of the anti-tampering image display body and the transfer sheet used for forming the anti-tampering layer, it is possible to modify and alter the image part by peeling or reattaching. There is a fraud prevention image display body that can prevent and prevent reuse of an image portion or the like after destruction of the image display body, and a transfer sheet used for manufacturing the image display body (for example, see Patent Document 5).

JP-A-6-259014 JP-A-5-318975 JP-A-8-54825 Japanese Patent Publication No. 6-98861 Japanese Patent Laid-Open No. 10-44694

In general, a known technique is that a person visually determines a warning character or the like, so there is a risk of overlooking a “confidential” or “opened” warning. In addition, there was also a risk of pasting again so as not to leave any traces after opening with the warning ignored.

In Patent Document 1, humans visually determine different colors under ultraviolet light and visible light, but depending on the light source irradiation state and ambient light environment, the color is difficult to understand and may cause human error. There is. In addition, there is a risk of falsification by applying a material similar to a material having different colors under ultraviolet light and visible light to the peeled portion and erasing the peeled trace.

Patent Document 2 provides an information recording carrier to which an external action to be determined has not yet been added because a discoloration portion that changes color when exposed to air is provided or a visual change is made by providing a portion that changes due to heat, pressure, or the like. However, the color may be developed depending on the use environment (heat, pressure, bending, etc.) or chemical reaction (air and moisture penetration, etc.), and there is a risk of erroneous visual judgment.

In Patent Document 3, since at least a part of the surface of the label of the plastic film is printed with a character or pattern using a conductive paint, it can be replaced if the adhesive on the back surface of the label can be skillfully removed. There was a problem of being able to do it. In addition, since the conductive material is printed on the surface of the plastic film, there is a risk that the exposed conductive material is disconnected due to an external factor and misidentified. Moreover, since it is a system which measures by making the electrode of an electricity test machine contact, opening of a box etc. wrapped with the outer package cannot be measured from the outside.

In Patent Document 4, a linear conductive material is formed on the adhesive surface, and a power source or a fixed resistor is connected to the electrode to form an electric circuit. When the electric circuit is short-circuited or disconnected, it is determined that the package has been opened. ing. However, since the discrimination method is a contact method in which a power supply or a fixed resistor is connected for measurement, tampering by peeling or re-mounting the photo between the layers of the card or ID card, or opening a box wrapped in an outer package Cannot be detected immediately due to non-contact.

Patent Document 5 provides an adhesion inhibition layer that prevents adhesion between layers, and a separation trace between separation between layers in contact with the adhesion inhibition layer and separation at a portion having a weak adhesive force between layers other than the adhesion inhibition layer. Due to this difference, alterations and alterations of photographs and the like due to peeling or replacement are prevented. However, since a person visually determines the difference between the peeling marks, an artificial error may occur.

The present invention has been made in view of the above-mentioned conventional problems, eliminates oversight by humans, prevents the exposed conductive material from being disconnected and misidentified, and immediately detects opening by non-contact. Further, it is an object of the present invention to provide a peeling and unsealing prevention medium for accurately identifying the presence or absence of counterfeiting and tampering even in the conductivity inspection by peeling or replacing a card or identification card.

The peeling and unsealing prevention medium of the present invention includes a base material, a peeling layer supported by the base material, a conductive layer provided on the upper surface of the peeling layer, and an adhesive layer for bonding the conductive layer. cage, at least a part of a region of the conductive layer, the length of the long sides conductive layers resonates the electromagnetic wave is 1/2 n of a predetermined wavelength ⁽ⁿ is an integer of 0 or more), a short side length Is formed with a length of at least 0.05 mm and less than the length of the long side, and when the conductive layer is peeled off, the conductive layer is cut, and the peeling changes to a shape that does not resonate with the wavelength of the electromagnetic wave. It is characterized by being an anti-opening medium.

Further, the peeling and unsealing medium of the present invention comprises a base material, a peeling layer supported by the base material, a conductive layer provided on the upper surface of the peeling layer, and an adhesive layer for bonding the conductive layer. When the conductive layer is peeled off, at least a part of the shape of the conductive layer resonates with the wavelength of the electromagnetic wave applied to the conductive layer, and the length of the long side is ½ of the predetermined wavelength. ⁿ (where n is an integer of 0 or more), and a short side length of at least 0.05 mm and a length of the long side or less.

The peeling prevention medium of the present invention comprises an image information medium disposed above or below the conductive layer, and the image information medium has a long side length of the conductive layer of 1/2 ⁿ (a predetermined wavelength). n is an integer greater than or equal to 0) × the length of the short side is 0.05 mm to 1/2 ⁿ or less of the predetermined wavelength (n is an integer greater than or equal to 0), and peeling and It is characterized by being an anti-opening medium.

Further, the peeling and unsealing medium of the present invention comprises an image information medium disposed above or below the conductive layer, and when the image information medium is peeled, the length of the long side of the conductive layer has a predetermined wavelength. 1/2 ⁿ (where n is an integer of 0 or more) × short side length of 0.05 mm to ½ ⁿ or less (n is an integer of 0 or more) of a predetermined wavelength is cut into a wavelength resonance It is characterized by being an anti-peeling medium that does not have such a length.

The image information medium described above is a peeling and unsealing prevention medium that is a face photograph.

Further, the peeling and opening prevention medium of the present invention includes an opening tape base material in which the entire surface of the package is covered with an outer packaging member, and a cutting line is provided at a predetermined position of the outer packaging member. The long side is 1/2 ^{n of the} predetermined wavelength (n is an integer of 0 or more), the short side is at least 0.05 mm or more, and the long side is long. It is a peeling and opening prevention medium in which at least one sheet band of a conductive material having a length and a width that resonates at a wavelength is arranged orthogonally by vapor deposition, printing, coating, or thermal transfer. Yes.

By adopting the above configuration, the present invention prevents oversight by humans, and by automatically measuring conductivity by a machine, it is possible to accurately identify the presence or absence of forgery or tampering. .

Below, the peeling and unsealing prevention medium by embodiment of this invention are demonstrated using drawing. However, the present invention is not limited to the best mode for carrying out the invention described below, and includes various other embodiments within the scope of the technical idea described in the scope of claims. .

As a method for detecting whether or not the peeling and opening prevention medium affixed to the article etc. has been peeled off or opened in order to discriminate forgery or tampering with the article etc. attached with the peeling and opening prevention medium of the present invention, Embodiment 1 in which peeling is detected by the occurrence of cracks such as cracks and cracks in the conductive layer constituting the peeling and unsealing medium when peeled or opened. Embodiment 2 in which peeling is detected by cutting the layer into a certain length and width, and Embodiment 3 in which peeling is detected by the occurrence of anisotropy due to the peeling direction in the conductive layer. This will be described using one form.

(Embodiment 1)
FIG. 1 is a schematic cross-sectional view showing a basic configuration of an unsealing and peeling preventing medium according to an embodiment of the present invention. In the present embodiment, opening or peeling is detected when a crack occurs in the conductive layer when opening or peeling. The occurrence of cracks means a state in which the conductive layer itself is cracked, cracked, or torn.
The opening and peeling prevention medium of the present embodiment is called as an opening prevention medium or a peeling prevention medium depending on how to use the article to be stuck as an adherend and sticking to the adherend. The principle is the same. In the following description, when the drawings are used, the same reference numerals are given to the same components, and the description thereof is omitted.

FIG. 1A is a schematic cross-sectional view showing a basic configuration of the peeling prevention medium 1. It consists of a lower laminate in which the release layer 3 and the conductive layer 4 are laminated on the lower substrate 2, and an upper laminate in which the adhesive layer 5 is laminated on the upper substrate 6, and the lower laminate and the upper laminate are separated by a laminator or the like. Heat and pressure are applied and fused to produce an anti-peeling medium shown in FIG. Depending on the form of use of the peel prevention medium 1, it is used as an adherend or release paper.

For example, when sealing an envelope or the like as a method of using the produced peel prevention medium 1, when folding the folded portion of the envelope and using the peel prevention medium 1 between the lower surface of the folded portion and the envelope body side The lower base 2 is peeled off and attached to the envelope body side, and the upper base 6 is peeled off and the folded portion of the envelope is attached from above. The lower base material 2 and the upper base material 6 at this time are used as release paper.
As another use, the folded portion of the envelope is folded, the folded portion and the envelope main body side are aligned, and the lower base material 2 is peeled and bonded from the folded portion to the folded portion and the main body portion. At this time, the lower substrate 2 is used as release paper, and the upper substrate 6 serves as a protective layer.

In addition, the conductive layer 4 may be any material that changes its electrical resistance value by causing deformation or destruction when it is peeled, but an aluminum foil is particularly preferable as a material that easily breaks when a force is applied. The upper substrate 6 uses a transparent film or the like, but it is preferable to use a material suitable for the usage form.

When the anti-peeling medium 1 produced as shown in FIG. 1B is peeled off from the upper base 6 side or the lower base 2 side, the adhesive layer 5 is generally more adhesive than the release layer 3. Therefore, as shown in FIG. 1C, the conductive layer 4 is transferred to the upper substrate 6 side where the adhesive layer 5 is provided. At that time, the conductive layer 4 is peeled off from the release layer 3, a crack is generated in the conductive layer 4, the conductive layer is disconnected, and the conductivity is lowered.

FIG. 1D shows a state where the peeled anti-peeling medium 1 is restored by bonding the peeled lower base material 2 side and the upper base material 6 side using an adhesive or heat. Although it appears to have been restored in appearance, the crack of the conductive layer 4 generated when it is peeled off is not repaired even if it is restored by adhesion, and the crack remains in the conductive layer 4.
Whether or not the peeling prevention medium 1 according to the present embodiment is peeled by measuring the conductivity of the peeling prevention medium 1 when checking for evidence of forgery or tampering with the use of such a phenomenon. Can be detected.

FIG. 2 is a diagram illustrating an example of a method of detecting whether or not the peeling prevention medium 1 is peeled off by machine reading. FIG. 2 (a) is a schematic view of a non-contact type mechanical reader, in which a microwave handset 7 and a non-reflective terminator 8 are arranged to face each other, and a detection body is inserted into the gap to detect a detection voltage. Is to measure. This is a method for determining whether it is before or after peeling by measuring the detection voltage.
When the peeling prevention medium 1 obtained in the first embodiment is measured by using this machine reading method, the microwave reflection level is high when the conductivity of the conductive layer 4 is high, and the conductivity of the conductive layer 4 is high. A higher level is detected when the region of the conductive layer 4 resonates with the length and width of the resonance wavelength of the used microwave.

FIG. 2B is a schematic diagram of a transport-type mechanical reader using a transport device or the like. When measurement is performed while the separation preventing medium 1 and the microwave handset 7 are moved relatively, a scanned waveform is obtained. It is possible to determine whether the peeling prevention medium 1 is before peeling or after peeling.

Here, the length and width of the conductive layer that resonates with the wavelength of the microwave will be outlined.
FIG. 2C is a graph regarding the length of the conductive layer that resonates with the wavelength of the microwave, with the horizontal axis representing the pattern length mm of the conductive layer and the vertical axis representing the microwave detection voltage v. Microwaves are electromagnetic waves, and the frequency (GHz) and wavelength (mm) are as shown in the following equation.
Wavelength λ = c / f (c: speed of light, f: frequency)
The resonance wavelength of the antenna with respect to electromagnetic waves is an integral fraction of the wavelength λ. Since the value of the microwave detection voltage is affected by various factors, the microwave detection voltage v was actually measured using a 24.15 GHz microwave handset 7 with smooth conductors of various lengths. .

According to experiments, various factors are added, and the largest microwave detection voltage can be obtained in a conductor having a length of about 4 mm as shown in FIG. Since various factors are added, in this embodiment, the length of the conductor is determined to be “almost” an integral fraction of the wavelength of the electromagnetic wave. Further, according to experiments, generally, a smooth conductor having a length of about ¼ of the wavelength of the detection microwave has a high detection voltage, which is 1/2, 1/8, 1/16,. Thus, the maximum value of the microwave detection voltage could be observed in the length of 1/2 ⁿ (n is an integer of 0 or more).
On the other hand, the width of the conductive layer that resonates with the wavelength of the microwave needs to be about 0.05 mm or more in order to detect the conductivity by separating the noise from the microwave.
The upper limit of the width of the conductive layer is considered to be a theoretical value that is approximately ½ ⁿ or less (n is an integer of 0 or more) of the wavelength of the detection microwave. Through experiments, it has been confirmed that 1/2 ⁿ corresponds to about 4 mm, and this value is a limit value that allows resonance as a width.

As described above, the method of mechanically reading the peeling prevention medium 1 has been described with reference to FIG. 2, but the printed matter, its authenticity determination method, and its authenticity determination device (Japanese Patent No. 3855502) previously filed by the present applicant. No.) or a reading method of a sheet measuring instrument using a leakage electromagnetic field (Japanese Patent Laid-Open No. 2005-265735) can be suitably used.

FIG. 3 shows an embodiment in which the image information medium 9 is further arranged between the upper laminated body and the lower laminated body in addition to the basic structure of the opening and peeling preventing medium shown in FIG.
3A shows a schematic cross-sectional view and a measurement waveform showing a configuration of the peeling prevention medium 1 after peeling, and FIG. 3B shows a structure of the peeling preventing medium 1 after peeling. Since the anti-peeling medium 1 is the same as shown in FIG. 1B by applying heat and pressure with a laminator or the like and fusing it to produce the anti-peeling medium, a description thereof will be omitted. The measurement waveform indicates a detection voltage measured by a reading method by a machine reading device using the microwave transceiver 7 shown in FIG.

As shown in the cross-sectional view of FIG. 3A, the conductive layer 4 before peeling is a continuous region, and the size is sufficiently longer than the resonance wavelength of the microwave handset 7. Consists of the whole. As shown in the waveform a of FIG. 3A, the conductive layer 4 has a high electrical conductivity, so that the radio wave transmitted from the microwave layer receiver 7 is easily reflected. A detection voltage is obtained.

On the other hand, when the peeling prevention medium 1 is peeled from the upper base material 6 side or the lower base material 2 side, the conductive layer 4 after peeling is the peeling layer as shown in the sectional view of FIG. 3, the image information medium 9 portion is peeled off from the conductive layer 4 and stuck to the adhesive layer 5 side, and the conductive layer 4 portion without the image information medium 9 is adhered to the adhesive layer 5 while being adhered to the image information medium 5. When it cut | disconnects at the edge part 9 and affixed on the upper base material 6 side, peeling of a conductive layer arises and a fine crack generate | occur | produces. As shown in the waveform b of FIG. 3B, the conductive layer 4 after peeling has been cut and the electric conductivity of the portion of the conductive layer 4 attached to the upper base 6 side has become low. The radio wave transmitted from 7 is likely to be transmitted, and this portion has a low detection voltage.
In such a configuration, when it is restored to the original state again, it seems to have been repaired by visual observation, but has it peeled off due to a change in electrical resistance value compared to the state where it is normally applied? It is possible to identify whether or not.

The waveforms a and b shown in FIGS. 3A and 3B are voltage waveforms measured with a 24.15 GHz Doppler module (microwave detector). When measuring with the microwave transceiver 7, the vapor deposition film thickness of the conductive layer 4 needs about 400-1000 mm.

(Embodiment 2)
FIG. 4 is a schematic cross-sectional view showing a basic configuration of the peeling prevention medium 1 in one embodiment of the present invention. This embodiment is a mode in which peeling is detected when a cut occurs in a conductive layer when peeling occurs. In the present embodiment, the cutting that occurs in the conductive layer 4 that can detect the peeling means that the conductive layer 4 portion is configured to have a certain length and width that causes wavelength resonance with the microwave when peeling. is there.
As shown in FIG. 4A, the basic configuration of the peeling prevention medium 1 used in the present embodiment is a lower laminate in which a peeling layer 3 and a conductive layer 4 are laminated on a lower substrate 2 and an upper substrate 6. The conductive layer 4 is cut when it is peeled off for the purpose of falsification by sandwiching an image information medium 9 such as a photograph or name panel between the upper laminated body in which the adhesive layer 5 is laminated. In the present embodiment, the length of the conductive layer 4 as shown in FIG. 3 of the first embodiment described above is not set to the same length as other portions constituting the peeling prevention medium 1, but the conductive layer 4 When the layer is cut, the length of the conductive layer 4 that does not resonate with the wavelength changes to the length that resonates with the wavelength. Conversely, the length of the conductive layer 4 that resonates with wavelength does not resonate with the wavelength. The length of the conductive layer 4 is such that the length changes.

4A shows a schematic cross-sectional view and a measurement waveform showing a configuration of the peeling prevention medium 1 after peeling, and FIG. 4B shows a structure after peeling. In the present embodiment, an example will be described in which the conductive layer 4 is cut when peeled, and the length is changed to a wavelength resonating length.

FIG. 4A is composed of a lower laminate in which a peeling layer 3 and a conductive layer 4 are laminated on a lower substrate 2, and an upper laminate in which an adhesive layer 5 is laminated on an upper substrate 6. The image information medium 9 is sandwiched between the upper laminate and heat and pressure are applied by a laminator or the like and fused to produce the peeling prevention medium 1. At that time, the dimension of the conductive layer 4 is set to a length L1 that is sufficiently longer than the resonance wavelength of the microwave transceiver 7 shown in FIG. 2, and the positional relationship between the conductive layer 4 and the image information medium 9 is the microwave. The arrangement is such that it overlaps by the length L of the resonance wavelength of the transceiver 7.
The usage method of the lower base material 2 and the upper base material 6 is the same as that of the first embodiment depending on the usage form of the peeling prevention medium 1.
In addition, the conductive layer 4 may be any material that changes its electric resistance value due to deformation or destruction, but aluminum foil is particularly preferable as a material that easily breaks when force is applied.
The upper substrate 6 uses a transparent film or the like, but it is preferable to use a material suitable for the usage form.

When the produced anti-peeling medium 1 is peeled, a state after peeling as shown in FIG. 4B is obtained. The portion of the conductive layer 4 without the image information medium 9 is peeled off from the release layer 3 and adhered to the adhesive layer 5 so as to adhere to the upper substrate 6 side, while the image information medium 9 portion is attached to the adhesive layer 5. And the conductive layer 4, the portion of the conductive layer 4 overlapping the image information medium 9 remains on the lower substrate 2 side. As a result, the conductive layer 4 is divided into two regions having a length L that causes wavelength resonance on the lower substrate 2 side and a length L1-L that does not cause wavelength resonance on the upper substrate 6 side.

In order to restore the peeled anti-peeling medium 1, the length L and the L1-L conductivity are obtained even after the lower substrate 2 side and the upper substrate 6 side are bonded using an adhesive or heat after peeling. Layer 4 remains electrically disconnected. When checking for evidence of forgery or tampering of the anti-peeling medium 1, it can be detected that it has been peeled off by measuring using a microwave transceiver.
The method of detecting the peeling prevention medium 1 restored before and after peeling by machine reading is performed using FIGS. 2A and 2B described in the first embodiment. Thereby, since conductivity and wavelength resonance can be detected, it is possible to perform machine reading with higher accuracy as to whether or not the film is peeled off.

A waveform c in FIG. 4 (a) shows a waveform measured by the microwave transmitter / receiver 7 of the peeling prevention medium 1 after peeling, and a waveform d in FIG. 4 (b) shows peeling.
As shown in FIG. 4A, the conductive layer 4 before peeling has a continuous electric conductivity of the conductive layer 4 and has a length L1 that is sufficiently longer than the resonance wavelength of the microwave transceiver 7. In addition, the electric wave of the microwave is easily reflected by conductivity, and shows a medium detection voltage.
On the other hand, as shown in FIG. 4B, the peeled conductive layer 4 is divided into two regions on the lower base material 2 side and the upper base material 6 side by the image information medium 9 at the time of peeling. Since the dimension of the conductive layer 4 remaining on the substrate 2 side becomes a length L that resonates with the wavelength of the microwave transceiver, a high level detection voltage can be obtained. In such a configuration, when it is restored to the original state again, it seems that it has been repaired by visual observation, but it has been peeled off due to the fact that wavelength resonance is obtained compared to the state where it is normally applied. Can be identified.

Note that the measurement of the waveform c and the waveform d shown in FIGS. 4A and 4B is the same as the measurement of the waveform a and the waveform b shown in FIGS. To do.

FIG. 4C shows a schematic cross-sectional view and a measurement waveform showing the configuration of the peeling prevention medium 1 after peeling, and FIG. 4D shows the structure of the peeling preventing medium 1 after peeling. In FIG. 4A and FIG. 4B described above, when the peeling prevention medium 1 is peeled, the conductive layer 4 that does not resonate with wavelength changes to a wavelength resonating length. When 1 is peeled off, the conductive layer 4 is cut and the conductive layer 4 is changed to a length that does not resonate with wavelength. However, when the conductive layer 4 is cut, an image information medium such as a photograph or a name panel is used. The purpose of detecting 9 alterations is the same.

FIG. 4C is composed of a lower laminate in which the peeling layer 3 and the conductive layer 4 are laminated on the lower substrate 2 and an upper laminate in which the adhesive layer 5 is laminated on the upper substrate 6. An image information medium 9 was sandwiched between the upper laminate and heat and pressure were applied by a laminator or the like to fuse them to produce a peeling prevention medium 1. At that time, the size of the conductive layer 4 is a length L which is the resonance wavelength of the microwave transceiver 7 and the positional relationship between the conductive layer 4 and the image information medium 9 is arranged so that they overlap each other. The length L of the dimension of the conductive layer 4 is not overlapped.

When the produced peeling prevention medium 1 is peeled, a state after peeling as shown in FIG. The portion of the conductive layer 4 without the image information medium 9 is peeled off from the release layer 3 and adhered to the adhesive layer 5 so as to adhere to the upper substrate 6 side. On the other hand, the image information medium 9 has the adhesive layer 5 and the conductive layer. 4, the portion of the conductive layer 4 overlapping the image information medium 9 remains on the lower substrate 2 side. As a result, the conductive layer 4 having the length L with which the wavelength resonates is divided into two regions, the length L2 where the wavelength does not resonate with the lower base material 2 side and the L-L2 with the upper base material 6 side. .
In order to restore the peeled anti-peeling medium 1, the two lengths L <b> 2 and L-L <b> 2 are electrically conductive even after the lower substrate 2 side and the upper substrate 6 side are bonded using an adhesive or heat after peeling. Layer 4 remains electrically disconnected. When checking for evidence of forgery or tampering of the peeling prevention medium 1, it can be detected that the peeling has occurred by measuring using the microwave transceiver 7.
The method of detecting the peeled anti-peeling medium 1 by machine reading is performed using FIGS. 2A and 2B described in the first embodiment.

A waveform e in FIG. 4C shows a waveform measured by the microwave transmitter / receiver 7 of the peeling preventing medium 1 after peeling, and a waveform f in FIG.
As shown in FIG. 4C, the conductive layer 4 before peeling exhibits a high level of detection voltage because the dimension is a length L that resonates with the wavelength of the microwave transceiver 7.
On the other hand, as shown in FIG. 4D, the conductive layer 4 after peeling is divided into two regions at the time of peeling, and has a length L2 that is sufficiently shorter than the resonance wavelength of the microwave transceiver 7. Since the microwave radio wave is easily transmitted through the conductive layer 4, it shows a medium level detection voltage. When the conductive layer 4 has such a configuration, when it is restored to its original state after peeling, it appears to have been repaired by visual observation, but wavelength resonance is obtained as compared with a state where it is normally applied. It becomes possible to identify whether it peeled or not.

(Embodiment 3)
FIG. 5 is a schematic diagram showing the configuration of the peeling prevention medium 1 in which the upper base material 6 forming the upper laminate is made longer than the adhesive layer 5 in the basic structure of the opening and peeling prevention medium shown in FIG. It is sectional drawing. This embodiment is a mode in which peeling is detected when anisotropy occurs in the conductive layer when peeling occurs.
In the configuration of the peeling prevention medium 1 used in the present embodiment, when peeling the laminated sheets, a crack occurs at the boundary line between the peeled portion and the portion that has not been peeled, and as the peeling proceeds, Since cracks increase one after another, conductive anisotropy remains in the direction perpendicular to the pulling direction.

FIG. 5A is a cross-sectional view illustrating a state in which the peeling preventing medium 1 is partially peeled. The peeling prevention medium 1 includes a lower laminated body in which a peeling layer 3 and a conductive layer 4 are laminated on a lower base material 2, and an upper laminated body in which an adhesive layer 5 is laminated on an upper base material 6 that is longer than the adhesive layer 5. Are manufactured by applying heat and pressure with a laminator or the like and fusing them.
If the upper base material 6 that forms the upper laminate is made longer than the adhesive layer 5, the elongated region is not bonded, so it can be peeled by holding that portion, and the peel strength and tear strength are balanced. Therefore, the direction in which cracks tend to proceed can be controlled.

FIG. 5B shows a conductive layer that has been peeled off by adhering to the side of the adhesive layer 5 that is stronger than the release layer 3 when the release prevention medium 1 having the same length as that of the adhesive layer 5 is peeled off. FIG. This is an example in which irregular cracks occurred and no anisotropy occurred.
In this case, there is no long region of the upper base material 6 as shown in FIG. 5 (a), and the whole base material is fused in a solid state, and the force for forcibly peeling is obtained. Since it is applied to the area to be peeled, irregular cracks are generated in the conductive layer 4 portion as it is peeled off.
FIG. 5C is a diagram showing a state of the conductive layer 4 when the peeling prevention medium 1 shown in FIG. 5A is peeled off. An example in which an anisotropic crack occurs and anisotropy occurs is shown.
In this case, since the upper base material 6 is configured to be longer than the adhesive layer 5, when peeling off, the upper base 6 is peeled off by pulling up with the longer part, so that the vertical direction is in the peeling direction. Regular cracks occurred.

Here, a method for measuring the anisotropy of the peeling prevention medium 1 will be described. As shown in FIG. 2, it is possible to measure the presence or absence of cracks by placing the microwave transmitter / receiver 7 and the non-reflective terminator 8 facing each other and inserting the peeling prevention medium 1 into the gap. The conductivity is different between the vertical direction and the horizontal direction by measuring several points while changing the angle between the microwave transmitter / receiver 7 and the peeling prevention medium 1 around the center of the microwave irradiation range. Therefore, anisotropy can be detected. Thus, by detecting the anisotropy, it is possible to determine the trace of peeling, and the conductivity anisotropy can be determined. As a result of measurement by this method, FIG. 5B shows no anisotropy of conductivity, and FIG. 5C shows anisotropy.

FIG. 6 shows a configuration in which the strong adhesion region and the weak adhesion region are alternately provided in the basic configuration of the unsealing and peeling preventing medium shown in FIG. 1 instead of uniformly applying the adhesive layer 5 in a solid shape. 2 is a schematic cross-sectional view showing the configuration of the peel prevention medium 1 that has been removed. FIG. In the present embodiment, the peeling is detected by the occurrence of anisotropy in the conductive layer 4 when the peeling occurs. By alternating the configuration of the adhesive layer 5 with strength, it is possible to generate a striped pattern shape at the time of peeling.
In addition, as an example in which anisotropy is generated by partially changing the adhesive application amount of the adhesive layer 5, a configuration in which strong adhesion regions and weak adhesion regions are alternately arranged, for example, stripes What was formed in the shape is considered.

FIG. 6A is a schematic configuration diagram of the anti-peeling medium 1 before peeling (before fusing). The lower substrate 2 includes a lower laminate in which a peeling layer 3 and a conductive layer 4 are laminated, and an upper substrate. The material 6 is composed of an upper laminated body in which adhesive layers 5 in which strong adhesion areas and weak adhesion areas are alternately arranged are laminated, and this lower laminated body and upper laminated body are subjected to heat and pressure using a laminator or the like. The peeling prevention medium 1 is manufactured by fusing.
FIG. 6B shows the state of the conductive layer 4 after peeling of the produced peeling prevention medium 1, and the weakly bonded region portion has weaker adhesive strength than the peeling layer 3. Since only the strongly bonded region is bonded to the conductive layer 4 and peeled off, the conductive layer 4 remains in a striped pattern on the lower substrate 2 side.

When measuring the anisotropy of the anti-peeling medium 1, for example, a microwave transceiver 7 is used to measure the electrical conductivity by measuring several points at different angles around the center of the microwave irradiation range. Sex anisotropy can be determined. As a result, anisotropy can be detected because the conductivity differs in the vertical and horizontal directions even if the peeled portion appears to have been restored to the original. In this way, it is possible to determine the trace of peeling by detecting anisotropy.
In addition, the usage method of the lower base material 2 and the upper base material 6 is the same as that of Embodiment 1 according to the utilization form of the peeling prevention medium 1. In addition, the conductive layer 4 may be any material that changes its electric resistance value due to deformation or destruction, but aluminum foil is particularly preferable as a material that easily breaks when force is applied.
The upper substrate 6 uses a transparent film or the like, but it is preferable to use a material suitable for the usage form.

(Example 1) FIG. 7 shows Example 1 in which the peeling prevention medium 1 is a label for sealing or the like as an example using the first and second embodiments of the present invention. In the first embodiment, when a label for sealing or the like is peeled off, there are two detection methods: a detection method in which a high level is generated in the detection voltage by the microwave transceiver, and conversely, a detection method in which the high level existing in advance is low. I can take it. These two methods will be described with reference to FIGS.
A detection method in which a high level is generated in the detection voltage by the microwave transmitter / receiver 7 will be described with reference to FIGS.
In general, when sealing an envelope or the like, the folded portion is folded and adhered together with the envelope main body with an adhesive tape from above, or the lower surface of the folded portion is pasted with glue or the like. In the present embodiment, it is determined whether or not the envelope having the label for sealing or the like adhered from the folded portion is peeled off. When the folded part of the envelope is peeled off and restored to the original state, it looks visually repaired, but the conductive layer that makes up the label does not return to its original state even when restored after peeling. Is read by the microwave transmitter / receiver 7 to provide a label capable of determining the trace of peeling.

Fig.7 (a) is a figure which shows the position of the label for sealing stuck on the envelope, and the scanning position by a sensor. FIG.7 (b) is a schematic sectional drawing which shows the structure of the label for sealing. The layers constituting the sealing label include the lower substrate 2, the second adhesive layer 5 ″, the release layer 3, the conductive layer 4, the first adhesive layer 5 ′, and the upper substrate 6. The upper substrate. A transparent film etc. are used for 6. The lower base material 2 is peeled off, and a label for sealing is pasted over the folded portion of the envelope and the main body. The weakly bonded region is composed of the length and width of the conductive layer that resonates with the wavelength of the microwave, that is, the length of the long side is approximately ½ ⁿ or less of the wavelength of the detection microwave (n is Since the measured length is about 4 mm, and the length of the short side is 0.05 mm to 1/2 ⁿ or less of the predetermined wavelength (n is an integer of 0 or more), In this embodiment, it is possible to determine the peeled trace by setting the size to 4 mm to 1 mm. Furthermore, the weak adhesion areas, and weakly adhesive strength than the peeling layer 3.

FIG. 7C shows a state before opening, FIG. 7D shows a schematic cross-sectional view after opening and a voltage waveform detected by the microwave transceiver 7.
As shown in FIG. 7 (c), before opening, the conductive layer 4 of the sealing label is not cut and the conductivity is continuous. A medium level is shown by the width of 4 based on the conductivity of the conductive layer.
On the other hand, when the detection waveform h after opening shown in FIG. 7D is seen, the sealing label is peeled off together when the folded portion of the envelope is peeled off, and the conductive layer 4 is transferred to the upper substrate 6 side. It can be seen that it was cut into two of the portions remaining on the release layer 3 side. Of the conductive layer 4 cut in two, the portion of the first adhesive layer 5 ′ that is in contact with the weakly bonded region is not peeled off even when the sealing label is peeled off to form a conductive element having a size of 4 × 1 mm. Thus, the remaining detection voltage on the lower surface of the peeling layer 3 is at a high level, while the portion in contact with the strong adhesion region is peeled off together with the peeling, so that the detection voltage is at a medium level with a wide area. As a result, it can be seen that the detection waveform h has a higher level peak than the detection waveform g in the portion where the conductive element is formed.

In addition, even if the peeled part is restored to its original state and restored with an adhesive or the like, it appears to be repaired visually, but the shape of the voltage waveform detected by the microwave transmitter / receiver has a high-level peak width. As it is, it can be seen that it has peeled off.
As a measurement method for determining with higher accuracy, as shown in the above-described third embodiment, the conductive layer 4 was peeled off a plurality of times by changing the angle with the center of the microwave transceiver as a fulcrum. You may determine anisotropy by measuring the detection voltage of a part.

A detection method in which the high level existing in advance in the detection voltage by the microwave transceiver is lowered will be described with reference to FIGS.

Fig.7 (a) is a figure which shows the position of the label for sealing stuck on the envelope, and the scanning position by a sensor. FIG.7 (e) is a schematic sectional drawing which shows the structure of the label for sealing. The layers constituting the sealing label include the lower substrate 2, the second adhesive layer 5 ″, the release layer 3, the conductive layer 4, the first adhesive layer 5 ′, and the upper substrate 6. The upper substrate. A transparent film etc. are used for 6. The lower base material 2 is peeled off, and a label for sealing is pasted over the folded part of the envelope and the main body, and the conductive layer 4 has a higher level by a microwave transceiver. As described above, at least one conductive element having a size of 4 × 1 mm is formed so as to obtain a detection voltage, and the first adhesive layer 5 ′ is composed of a weakly bonded region and a strongly bonded region, and has a strong strength. A conductive element having a size of 4 × 1 mm is disposed so as to overlap at least 0.5 mm in the adhesion region, and in this embodiment, the conductive element is disposed so as to overlap by 2 mm.

Fig. 7 (f) shows a state before opening, and Fig. 7 (g) shows a schematic cross-sectional view after opening and a voltage waveform detected by the microwave transceiver.
As shown in FIG. 7 (f), before opening, since the conductive elements of the conductive layer 4 of the sealing label are not cut and the conductivity is continuous, the detection waveform g ′ in FIG. When it sees, the part which formed two electroconductive elements has shown the high level.
On the other hand, when the detection waveform h ′ after opening shown in FIG. 7G is seen, the sealing label is peeled off together when the folded portion of the envelope is peeled off, and the conductive element of the conductive layer 4 (the one on the left side) is It turns out that it cut | disconnected into the part which transferred to the upper base material 6 side, and the remaining part. The conductive element with dimensions 4 x 1 mm was cut, so the part of the conductive element that moved to the strong adhesion area side was about 2 mm, and the part of the conductive element that remained on the weak adhesion area side was dimension 2 mm. As a result, the detection waveform h ′ decreased to a low level. As a result, the detection waveform g ′ before peeling has two high level peaks, whereas the detection waveform h ′ after peeling has a high level peak because the conductive element is cut in two. It turns out that becomes one.
Even if the peeled portion is restored to its original state and attached with an adhesive or the like, it appears to have been repaired by visual observation, but the trace of peeling can be seen from the shape of the voltage waveform detected by the microwave transceiver 7.

Further, in this example, as described in the first embodiment, the method for detecting the peeling by the occurrence of the cut in the conductive layer has been described. However, the method for the peeling preventing medium described in the second and third embodiments is described. It is also possible to use it.

(Example 2) FIG. 8 shows Example 2 in which an anti-peeling medium is used for a card or a portable medium as another example using the first and second embodiments.
In general, a card or a portable medium often incorporates a photograph of the owner's face as image information. In the present embodiment, in the card-like identification card, when the card layer is peeled off and the face photo is replaced with another face photo to return to the original state, or the original face image is scraped off and the face image is removed. Is printed and returned to its original state, it is possible to discriminate peeling because a crack is generated in the conductive layer constituting the card.

FIG. 8A shows a configuration in the case where the peeling prevention medium is used as a card-like identification card. The layers constituting the card are composed of a lower substrate 2, a release layer 3, a conductive layer 4, a face photograph 12, an adhesive layer 5, and an upper substrate 6. The release layer 3 may be replaced with an adhesive layer instead of the release layer 3 as long as the material has a sufficiently low adhesive force as compared with the adhesive layer 5. In this embodiment, an example in which a face photograph is inserted into a card is shown, but other information recording media such as a name card can be used. As the upper substrate 6, a transparent film, a colored film or the like is used. The colored film is used because the conductive layer can be concealed.

As shown in the schematic cross-sectional view of the layers constituting the card in FIG. 8A, the conductive layer 4 has no cracks and is conductive before peeling. Looking at the waveform i of the detection voltage, the level is increased by the width of the conductive layer 4.
On the other hand, after the peeling in FIG. 8 (b), as shown in the schematic cross-sectional view of the layers constituting the card, when peeled off, the conductive layer 4 has a portion transferred to the upper substrate 6 side and a lower substrate. It can be seen that the material 2 is cut into two parts remaining on the side. Further, the waveform j of the detection voltage after peeling shown in FIG. 8B is at a low level because a fine crack is generated on the entire surface in the portion of the conductive layer 4 transferred to the upper base material 6 side. The remaining conductive layer 4 remains at a high detection voltage. As a result, the detection voltage waveform j is narrower than the waveform i.
Even if the peeled portion is returned to its original state and pasted with an adhesive or the like, it looks visually repaired, but since the waveform shape of the detected voltage remains narrow, the trace of peeling can be seen.

Another embodiment according to the second embodiment will be described with reference to FIGS.
In the form of the card in FIG. 8A, the conductive layer 4 other than the face photograph 12 portion is transferred to the upper substrate 6 side when peeled, whereas in the form of the card in FIG. The point is that the layer 4 is transferred to the lower surface of the face photograph 12. In other words, the difference is whether the layer of the card as the identification card is detected or the face photograph itself is detected.

FIG. 8D shows a schematic cross-sectional view of the layers constituting the card. The lower substrate 2, the conductive layer 4, the adhesive layer 5, the face photograph 12, the release layer 3, and the upper substrate 6 are configured in this order. When the card is peeled off, the conductive layer 4 is cut into two by the facial photograph 12, and further peeling can be detected by generating fine cracks. Further, if the release layer 3 is a material having a sufficiently low adhesive force compared to the adhesive layer 5, it may be replaced with an adhesive layer instead of the release layer 3. In this case, at the time of peeling, all the conductive layers 4 are transferred to the upper base material 6 side. Thereafter, when the forger removes the facial photograph 12 from the upper base material 6, the conductivity of the facial photograph portion is removed. Since (medium level) is lost, peeling can be detected.

As shown in the cross-sectional view of FIG. 8D, before peeling, the conductive layer 4 has no cracks, and the conductivity is continuous. Therefore, the detection voltage shows a high level corresponding to the width of the conductive layer. On the other hand, after peeling in FIG. 8E, when peeled off, the conductive layer 4 was cut into two parts: a part where the conductive layer 4 was transferred to the adhesive layer 5 laminated on the back surface of the face photograph 12 and a remaining part. In the portion of the conductive layer 4 that has been transferred to the back side of the face photograph 12, the detection voltage is at a low level because fine cracks have occurred on the entire surface. On the other hand, the detection voltage of the conductive layer 4 remaining on the lower substrate 2 side is low. The part remains at high detection voltage. As a result, the width of the detection voltage is narrowed.
Even if the peeled portion is returned to its original state and pasted with an adhesive or the like, it appears to have been repaired by visual observation, but since the corrugated shape remains narrow, the trace of peeling can be seen.

As in the two examples described in detail above, even when the face photograph is peeled off and returned to the original state, it appears to have been repaired visually, but the detected waveform width of the detected conductive layer portion is narrow. Thus, it becomes possible to determine the trace of peeling.

The detection voltage is measured by mechanical reading as shown in FIG. 8 (c). The microwave transmitter / receiver 7 and the non-reflective terminator 8 are opposed to each other, and the card is conveyed into the gap. Was used to measure by scanning. In order to determine more accurately, as shown in the third embodiment, the center of the microwave transmitter / receiver 7 is used as a fulcrum, the angle is changed, and the detected voltage is measured a plurality of times to change the anisotropy. You may judge.

Further, in this example, the method for detecting peeling by generating fine cracks in the conductive layer as described in the first embodiment has been described. However, the method of the peeling prevention medium described in the second and third embodiments is described. It is also possible to use.

Example 3 FIG. 9 shows Example 3 in which a configuration using wavelength resonance is used for an identification card or a portable medium as an example using the second embodiment.
In general, the identification card often incorporates a photograph of the face of the owner as image information. In the third embodiment, for the purpose of falsifying the identity light, for example, when the layer is peeled off and replaced with another face photo to return to the original state, or the original face image is scraped off and the face image is printed again. When it is restored to its original state, it looks as if it has been repaired visually, but cracks are generated in the conductive layer constituting the identification card, so that it is possible to determine peeling. The difference between the third embodiment and the second embodiment is that the size of the conductive layer is set to a length that resonates with the wavelength of the microwave handset.

Fig.9 (a) is a schematic sectional drawing which shows the structure of the identification card | curd using the wavelength resonance of a present Example. When the second adhesive layer 5 ″, the conductive layer 4, and the first adhesive layer 5 ′ are laminated on the upper base material 6 and fused with the lower base material 2, heat and pressure are applied by a laminator or the like with the face photograph 12 interposed therebetween. Applying and fusing to complete the identification card, the conductive layer 4 has a length L that resonates with the wavelength of the microwave transceiver, and this conductive layer 4 partially overlaps the face photograph 12. In this embodiment, the dimension L of the conductive layer 4 is such that the maximum microwave detection voltage can be obtained in the conductive layer, as described in FIG. The width can be 0.05 mm or more and 4 mm or less (1/2 ⁿ or less (n is an integer of 0 or more)), but in this embodiment, the width is 1 mm.

FIG. 9C shows a state before peeling, and FIG. 9D shows a state after peeling. As shown in FIG. 9D, when the facial photograph 12 is to be peeled off, the six conductive layers 4 arranged between the facial photograph 12 and the lower substrate 2 are cut into two parts. . One is the portion of the conductive layer 4 that is bonded to the face photograph 12 and adhered to the upper surface of the face photograph 12. The other is the portion of the conductive layer 4 bonded to the lower substrate 2 without overlapping the face photograph 12 and remains on the lower substrate 2. As a result, the conductive layer 4 having the length L (about 4 mm) at which the wavelength resonates is divided into the length L2 at which the wavelength does not resonate. Even if the lower base material 2 and the upper base material 6 are returned to the original state by using an adhesive or heat after peeling, the conductive layer 4 portion is not continuous but repaired in two. It has not been done.

As shown in FIG. 9B, the detection voltage was measured by scanning the identification card before peeling in FIG. 9C and after peeling in FIG. 9D with the microwave transceiver 7. As a result, looking at the waveform k before peeling in FIG. 9C, a high level detection voltage was obtained because the dimension of the conductive layer 4 was the length that resonated with the wavelength of the microwave transceiver 7.
On the other hand, when the waveform l after peeling in FIG. 9D is seen, the conductive layer 4 is cut into two by peeling, and the microwave does not resonate with the wavelength of the microwave transmitter / receiver 7 and the microwave is easily transmitted. Changed to low level detection voltage.

FIG. 10 shows a schematic cross-sectional view of an identification card as another form according to the third embodiment. In this embodiment, the size of the conductive layer 4 is set to a length L2 that does not resonate with the wavelength of the microwave transmitter / receiver. It is arranged at six locations so as to partially overlap the back side. In this embodiment, when peeled off, the conductive layer 4 is cut to a length of about 4 mm at which the wavelength resonates.
When the first base material layer 5 ′ is laminated on the upper base material 6, the conductive layer 4 and the second adhesive layer 5 ″ are laminated on the lower base material 2, and the upper base material 6 and the lower base material 2 are fused. Then, heat and pressure are applied by a laminator or the like with the face photograph 12 in between and fused to complete the identification card.
The description before peeling in FIG. 10B and after peeling in FIG. 10C is the same as FIG.

There are two differences between the embodiment of FIG. 10 and FIG. For one, the embodiment shown in FIG. 9 has a configuration in which the conductive layer 4 is placed on the face photograph 12, which may cause problems in appearance. In this case, it is changed to a layer configuration in which the conductive layer 4 is disposed under the face photograph 12 as in the embodiment shown in FIG. Second, in the embodiment shown in FIG. 9, the conductive layer 4 that resonates with wavelength is changed to a length that does not resonate with wavelength, whereas in the embodiment shown in FIG. 10, the length of the conductive layer 4 that does not resonate with wavelength is reversed. Changes to the length at which the wavelength resonates.

As in the two examples described in detail above, even when the face photograph 12 is peeled off and returned to the original state, it seems to have been repaired by visual observation, but the level due to the wavelength resonance has changed, so the peeling It is possible to determine the trace.

Example 4 FIG. 11 shows Example 4 used for the outer packaging member as an example using the second embodiment.
A packaging body that uses a film for the exterior of various box-type cases such as storage boxes such as video and flexible disks, cigarettes, caramel, etc., wraps a film of polypropylene or the like around the entire outer surface of the case, Folded according to the outer shape of the case, the overlapped part was band-to-film, adhered by thermal welding and sealed, and the opening tape with the opening function was wrapped and pasted at any place, these Is called an outer packaging member.

In FIG. 11, the schematic of Example 4 of an anti-opening medium is shown. In this embodiment, the anti-opening medium is a conductive seal band having a length and a width at which the wavelength of the microwave resonates is perpendicular to the band-shaped opening tape of the package, and is disposed on the inner surface of the package by vapor deposition or the like. What you did. In addition, a tape that has been previously attached to a drug product and a seal band deposited on the tape is also included. As a method for arranging the conductive seal band on the package, it may be arranged by thermal transfer, coating film, printing, etc. in addition to vapor deposition.

Fig.11 (a) is a figure which shows the structure of the layer in the packaging body of various box type cases, and is the figure seen from the upper surface. It is composed of a seal band 14, a package 15, and a band-shaped opening tape 16. The sealing body 14 is composed of the first adhesive layer 5 ′, the conductive layer 4, and the protective layer 17, and is formed by laminating on top in this order. The strip-shaped opening tape 16 is configured by providing the second adhesive layer 5 ″ on the tape substrate 18.
The strip-shaped opening tape 16 is adhered to the package 15, and the unsealing prevention medium 1 before opening is completed as shown in FIG. 11 (b). FIG. 11B is a top cross-sectional view, a side view, and a detection waveform of the unsealing prevention medium 1. FIG.11 (c) is a figure which shows the state after opening which pulled the end of the strip | belt-shaped opening tape 16, and broke the film from the state before opening of FIG.11 (b).

As shown in FIG. 11B, the seal band 14 before opening is a conductive layer (aluminum foil) 4 having a length of 4 mm and a width of 1 mm that resonates with the wavelength of the microwave. ), The detected voltage of the microwave displays a normal peak at the position where the seal band 14 is disposed. On the other hand, when the film is broken by pulling one end of the strip-shaped opening tape 16 as shown in FIG. 11C, the conductive layer (aluminum foil) 4 is not in a resonance state, and the micro wave as shown by the waveform n in FIG. The wave detection voltage is almost zero.
Thus, even if the tape once opened is pasted again with glue or something, since the conductive layer (aluminum foil) 4 is cut and does not resonate, fraud can be prevented.

Another embodiment according to the fourth embodiment is shown in an example in which a seal band is deposited and disposed perpendicular to the band-shaped opening tape 16 attached to the medicine box as shown in FIG. FIG. 12A shows the structure of the layers, and FIG. 12B is a state diagram in which one end of the belt-shaped opening tape 16 is pulled to break the film. Since this case is the same as the package of the case, details are omitted.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows 1st Embodiment of the peeling and unseal | opening prevention medium which concerns on this invention, and is a schematic sectional drawing of a peeling prevention medium. It is a figure which shows 1st Embodiment of the peeling and unseal | opening prevention medium which concerns on this invention, and is a figure which carries out machine reading of the peeling prevention medium. It is a schematic sectional drawing which shows another form of 1st Embodiment of the peeling and unseal | opening prevention medium which concerns on this invention. It is a figure which shows 2nd Embodiment of the peeling and unseal | opening prevention medium which concerns on this invention, and shows the schematic sectional drawing and detection waveform of a peeling prevention medium. It is a figure which shows 3rd Embodiment of the peeling and unseal | opening prevention medium which concerns on this invention, and is the schematic of the generation | occurrence | production state of the anisotropy of a peeling prevention medium. It is a schematic sectional drawing which shows another form of 3rd Embodiment of the peeling and unseal | opening prevention medium which concerns on this invention. It is a figure which shows Example 1 using the 1st and 2nd embodiment. It is a figure which shows Example 2 using the 1st and 2nd embodiment. It is a figure which shows Example 3 using 2nd Embodiment. FIG. 10 is a diagram illustrating another example of the third embodiment. It is a figure which shows Example 4 of the anti-opening medium using 2nd Embodiment. It is a figure which shows another form of Example 4. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Peeling prevention medium 2 Lower base material 3 Peeling layer 4 Conductive layer 5 Adhesive layer 5 'First adhesive layer 5 "Second adhesive layer 6 Upper base material 7 Microwave transceiver 8 Non-reflection terminator 9 Image information medium 12 Photo 14 Sealing strip 15 Packaging 16 Strip-like opening tape 17 Protective layer 18 Tape base material

Claims (6)

A base material, a release layer supported by the base material, a conductive layer provided on an upper surface of the release layer, and an adhesive layer for bonding the conductive layer,
In at least a part of the conductive layer, the length of the long side where the conductive layer resonates with the electromagnetic wave is 1/2 ⁿ of a predetermined wavelength (n is an integer of 0 or more), and the length of the short side Is formed at least 0.05 mm and less than the length of the long side,
An anti-peeling medium, wherein when the conductive layer is peeled off, the conductive layer is cut and changes into a shape that does not resonate with the wavelength of electromagnetic waves. A base material, a release layer supported by the base material, a conductive layer provided on an upper surface of the release layer, and an adhesive layer for bonding the conductive layer,
When the conductive layer is peeled off, at least a part of the shape of the conductive layer resonates with the wavelength of the electromagnetic wave applied to the conductive layer, and the length of the long side is 1/2 ^{n of a} predetermined wavelength. (N is an integer of 0 or more) and the length of the short side is at least 0.05 mm or more and the length of the long side or less. An image information medium is disposed above or below the conductive layer, and the image information medium has a length of a long side of the conductive layer of ½ ^{n of a} predetermined wavelength (n is an integer of 0 or more). The short side length of 0.05 mm to ½ ⁿ or less (n is an integer of 0 or more) of the predetermined wavelength is disposed so as to overlap the conductive layer. Peeling prevention medium. An image information medium is disposed above or below the conductive layer. When the image information medium is peeled off, the length of the long side of the conductive layer is 1/2 ^{n of a} predetermined wavelength (n is 0). 2. The length of the short side is 0.05 mm to 1/2 ⁿ or less (n is an integer of 0 or more) of the predetermined wavelength, so that the wavelength does not resonate. The peeling prevention medium according to 2. The peeling prevention medium according to claim 3, wherein the image information medium is a face photograph. The entire surface of the article to be packaged is covered with an outer packaging member, and includes an opening tape base material provided with a cutting line at a predetermined position of the outer packaging member, and one side of the opening tape base material has a long side length. Is a wavelength resonating length, wherein the length is 1/2 ^{n of a} predetermined wavelength (n is an integer of 0 or more), the length of the short side is at least 0.05 mm and the length of the long side is not more than An anti-opening medium, wherein at least one sheet band of conductive material having a width is arranged orthogonally by vapor deposition, printing, coating or thermal transfer.

Images