JP2013216056A - Pressure sensitive bonding product, and confirmation method of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pressure sensitive bonding product that conceals personal information described on surfaces bonded and laminated, and in addition if trying to peek the information, the illicitness can be easily certificated, and the misbehavior is surely prevented, and there is no obstacle in manufacturing and handling.SOLUTION: A pressure sensitive bonding product is divided into one piece and the other piece with the boundary of a folding scheduled line of an opaque substrate. Pressure sensitive bonding layers provided on opposing surfaces with a boundary of a folding scheduled line can be bonded, peeled and re-bonded. On one surface of one piece of the opaque substrate, the pressure sensitive bonding layer and a developer layer containing the electron accepting developer are provided in order. On one surface of the other piece of the opaque substrate, the pressure sensitive adhesive layer and a coloring agent layer containing a microcapsule involving the electron donating coloring agent are provided in order, and is folded by the folding scheduled line, the microcapsule is broken by pressurizing, the electron donating coloring agent reacts with the electron accepting developer and the developer layer produces the color.

Description

  In the present invention, a pressure-sensitive adhesive layer is provided on one side of an opaque base material, which does not exhibit adhesiveness in a normal state, but is peelably bonded by pressing the adhesive application surfaces facing each other. The present invention relates to a pressure-bonding product and a method for confirming whether the pressure-sensitive pressure-bonding product is illegally peeled off and re-bonded.

  Conventionally, when only personal information is taught to a specific person and personal information to be concealed is transmitted to other people, a document containing the personal information is sent as a sealed letter. However, since the postage cost is higher than that of postcards, it has been a heavy burden for companies that send out a large amount of deliveries.

  On the other hand, it is now possible to use a postcard that can be sent in a state where personal information is included in a postcard and cannot be read from the outside. This pressure-sensitive postcard is a special pressure-bonding device in which a pressure-sensitive adhesive that can be peeled is applied to the surfaces to be bonded, and personal information is printed on the surface to be bonded to make the pressure very high. The surfaces coated with the pressure-sensitive adhesive are pressure-bonded to each other and sent in a postcard form for use.

  The person who received this postcard reads the personal information by peeling the bonded surface from the end of the postcard that has been crimped. However, there have been cases in which personal information printed on this postcard was stolen while being sent and used illegally. On the other hand, as disclosed in Patent Documents 1 and 2, if another person peels off the cover sheet and sees it, even if the peeled portion is adhered again, it can be detected (peeled). A confidential information concealment sheet has been proposed.

  In the above secret information concealment sheet, the cover sheet to be peeled is intermittently cut, and when peeled off, the cut portion was torn and moved to the main body side that had been bonded until then, It is to inform. However, this secret information concealment sheet requires a dedicated device for cutting, and for those who receive the concealment information concealment sheet, if the concealment sheet is peeled off and the concealed information is read, Even a part of the information concealment sheet is torn, resulting in poor appearance, and an alternative is needed.

JP 2003-72264 A JP 2010-143083 A

  Therefore, in order to solve the above problems, the object of the present invention is to provide a pressure-sensitive adhesive product in which a pressure-sensitive adhesive layer is provided on one side of an opaque substrate, and the pressure-sensitive adhesive layer is in contact with an opaque substrate or the like. Without pressure bonding, the pressure-sensitive adhesive layers adhere to each other, and can be peeled off and re-adhered, concealing the personal information written on the bonded and bonded surfaces, and trying to steal the information In such a case, it is possible to provide a pressure-sensitive pressure-sensitive product that can easily prove the fraud, reliably prevent the fraud, and have no trouble in manufacturing and handling.

  The above object is achieved by the present invention described below. That is, the present invention is divided into one piece and the other piece with the planned folding line of the opaque base material as a boundary, and the pressure-sensitive adhesive layers provided on the surfaces facing each other with the planned folding line as a boundary. Adhering and peeling, re-adherable, one side of the opaque substrate in the one piece, the pressure-sensitive adhesive layer, a developer layer containing an electron-accepting developer is provided in order, On one side of the opaque substrate in the other piece, the pressure-sensitive adhesive layer, a color former layer containing a microcapsule encapsulating an electron-donating color former is provided in this order, and folded along the planned folding line, The pressure-sensitive pressure-sensitive adhesive product is characterized in that the microcapsules are broken, the electron-donating color former reacts with an electron-accepting color developer, and the color of the color developer layer can be developed.

  According to the above pressure-sensitive pressure-bonded product, it is folded along the planned folding line located at the center of the opaque base material, and one piece and the other piece are pressed with the pressure-sensitive adhesive layers overlapping each other. It is bonded, that is, crimped, and has high concealability such as personal information described on the crimping surface. Furthermore, when the pressure-bonding surface is peeled off in an attempt to steal the information, the developer layer of one piece reacts with the color former layer of the other piece to develop a color, thereby demonstrating the illegal act.

The present invention also provides:
The developer layer and the color former layer are provided at a position symmetrical to the expected folding line and on a part of the pressure-sensitive adhesive layer. It is a pressure-sensitive crimping product. According to this, since the developer layer and the color former layer are formed on a part of the pressure-sensitive adhesive layer, the adhesion between the pressure-sensitive adhesive layers is hindered by pressure bonding of the pressure-sensitive pressure-sensitive adhesive product. Since the developer layer and the color former layer, which can be a factor, are provided in limited places, the inhibition factor can be reduced, and the adhesiveness between the pressure-sensitive adhesive layers can be increased, which is preferable.

A method of confirming whether the pressure-sensitive pressure-bonded product of the present invention has been tampered with and re-bonded is as follows.
A method for confirming whether or not the pressure-sensitive pressure-bonded product described above is peeled off and re-bonded after being crimped,
By pressure bonding, a part of the microcapsules is destroyed, the electron-donating color former reacts with an electron-accepting developer, and the pressure-sensitive pressure-sensitive adhesive product in a state where the developer layer develops color at a predetermined color density. When you peel off the crimping surface,
It is characterized in that it is judged whether the pressure-sensitive pressure-bonded product has been illegally peeled off and re-adhered by looking at the color development state in the developer layer on the peeled surface.

  If it is said confirmation method, the object of the information recorded on the pressure-sensitive pressure-sensitive adhesive product is defined as the color density A, which is the color density of the developer layer due to the reaction with the color developer layer when pressure-bonded under normal conditions. If a third party who is not the person himself / herself peels off the pressure-bonding surface of the pressure-sensitive pressure-bonded product and steals the information recorded on the pressure-bonding surface, Is peeled off, the color of the developer layer is developed at a color density B higher than the color density A described above. As a result, it is possible to recognize that the pressure-sensitive pressure-bonded product is illegally handled, and there is a high possibility that information to be concealed is stolen.

  The pressure-sensitive pressure-bonded product and the method for confirming the pressure-sensitive pressure-bonded product of the present invention reliably conceal the personal information written on the bonded and bonded surfaces, and if the information is attempted to be stolen, It can be proved easily and can be reliably prevented. Moreover, the pressure-sensitive pressure-bonded product of the present invention has no trouble in manufacturing and handling.

It is the schematic which shows one embodiment of the pressure-sensitive crimping product of this invention. It is the schematic which shows other embodiment of the pressure-sensitive crimping product of this invention. It is a flowchart which shows the method of confirming whether the pressure-sensitive crimping product of this invention was illegally peeled and reattached.

Next, an embodiment of the invention will be described in detail.
FIG. 1 shows one embodiment of the pressure-sensitive pressure-bonded product of the present invention, and FIG. 1 (1) shows a schematic plan view before pressure-bonding of the pressure-sensitive pressure-bonded product 1. The pressure-sensitive crimping product 1 has a perforation as a planned folding line 6 at the center thereof, and the pressure-sensitive crimping product 1 is divided into one piece 7 and the other piece 8 with the perforation as a boundary. . In the pressure-sensitive pressure-bonding product 1, the pressure-sensitive adhesive layer 3 is applied to the entire surface of one side of the opaque base material 2, and the color former layer 5 is formed at a portion constituting the outer side of the one piece 7. It is provided in an inverted U shape. In addition, the developer layer 4 is provided in a U-shape at a location constituting the outer side of the other side 8.

  In FIG. 1 (1), the schematic of the cross section in the position of AA was shown in FIG. 1 (2). FIG. 1 (3) shows a schematic explanatory diagram showing a state of folding along the planned folding line 6 located at the center of the pressure-sensitive pressure-bonded product 1 in FIG. 1 (1). When folded along the planned folding line 6, one piece 7 and the other piece 8 overlap at the position where both outer sides coincide, and the pressure-sensitive adhesive layers of one piece 7 and the other piece 8 overlap. , A pressure-bonded product that has a width (L / 2) that is half the length L of the long side of the rectangle that is the outer shape of the pressure-sensitive pressure-bonded product 1 shown in FIG. Is obtained.

  In the pressure-sensitive pressure-bonded product 1 in which the one piece 7 and the other piece 8 are overlapped and bonded, the color developer layer 5 included in the one piece 7 and the developer layer 4 included in the other piece are in contact with each other. The microcapsules encapsulating the electron-donating color former contained in the color former layer are broken by the pressure during pressure bonding, and react with the electron-accepting color developer contained in the developer layer to develop color. The color development in the developer layer can be recognized by peeling the pressure-bonded surface of the pressure-bonded product. In addition, if the act of removing the pressure-bonding surface and then pressing it again to restore the original information in order to steal personal information written on the pressure-bonding surface, the color development in the developer layer is peeled off at the first time. Since the color is developed at a higher density than when viewed, or the color is not uniform and uneven, the above fraud can be proved.

  FIG. 1 (4) shows a schematic diagram of a cross section at the position B-B of the pressure-sensitive pressure-bonded product 1 in the crimped state shown in FIG. 1 (3). As shown in the figure, the sheet is folded at a planned folding line 6 located at the center of the pressure-sensitive pressure-bonding product 1, and one piece and the other piece are pressed and bonded with the pressure-sensitive adhesive layers overlapping each other. In detail, however, the portion constituting the outer side of one piece and the other piece has a color former layer on the outer side of one piece and the developer on the outer side of the other piece. Since the layers are provided, the pressure-sensitive adhesive layers are not bonded to each other. However, the pressure-sensitive adhesive layers are detachably bonded to each other except the outer side.

  FIG. 2 shows another embodiment of the pressure-sensitive pressure-bonded product of the present invention, in which the developer layer 4 and the color former layer 5 are symmetric with respect to the planned folding line 6 located at the center of the pressure-sensitive pressure-bonded product. “DNP” is repeatedly provided as an alphabetic character at the position. That is, the color former layer 5 is formed in a “DNP” pattern, the developer layer 4 is formed in a mirror image pattern “DNP”, and the developer having the color developer layer 5 in one piece is provided in the other piece. The microcapsules encapsulating the electron-donating color former contained in the color former layer are destroyed by folding and pressurizing the folding line 6 as a reference so as to overlap with the color layer 4, and the developer layer is formed in the color developer layer. By reacting with the electron-accepting developer contained therein, the pattern of the developer layer 4 is colored and can be read.

  In the case of FIG. 2, the developer layer 4 and the color developer layer 5 are formed in alphabetical patterns at symmetrical positions with respect to the folding line 6, and information on pressure-sensitive pressure-bonded products is recorded. It is preferable to form the developer layer 4 and the color former layer 5 at positions that do not overlap with the portions to be applied. In FIG. 1, the developer layer 4 and the color developer layer 5 are formed in a solid shape along the outer side of the pressure-sensitive pressure-bonded product. In any case, in the pressure-sensitive pressure-sensitive adhesive product of the present invention, the developer layer and the color former layer are provided in a symmetrical position with respect to the planned folding line, so that the folded folding line is overlapped with the planned folding line. The developer layer is colored when pressed.

  The color developer layer is formed on the entire surface of one piece on the other pattern or the pressure-sensitive adhesive layer, not limited to the developer layer and the color developer layer shown in FIGS. A developer layer may be formed on the entire surface of the other piece. When it is formed on the entire surface, both the color former layer and the color developer layer are reduced in thickness so that the adhesiveness between the pressure-sensitive adhesive layers is given. Practically, it is preferable to provide the developer layer and the color former layer on a part of the pressure-sensitive adhesive layer.

Hereinafter, each element which comprises a pressure-sensitive crimping product is demonstrated in detail.
(Opaque substrate)
The opaque base material 2 of the pressure-sensitive pressure-bonded product of the present invention is a product after pressure-bonding, and has an opacity so as to conceal information such as personal information described on the pressure-bonded surface so that it cannot be seen through. Is. Examples of the opaque base material include paper such as fine paper, art paper, coated paper, cast coated paper, synthetic resin or emulsion impregnated paper, synthetic rubber latex impregnated paper, synthetic resin internal paper, cellulose fiber paper, or the like. A film (so-called synthetic paper) having fine voids (micro voids) inside the material can be used.

  The thickness of the opaque substrate is preferably 20 to 300 μm. Among the opaque substrates, paper is particularly preferable. This is because the folding property and the adhesive property when the pressure-sensitive adhesive layers are bonded to each other by folding along the planned folding line are good.

(Pressure sensitive adhesive layer)
The pressure-sensitive adhesive layer 3 is adjusted so that the pressure-sensitive adhesive layer does not adhere even when it comes into contact with an opaque base material, but is bonded only when the pressure-sensitive adhesive layers are in pressure contact with each other, and can be peeled off again. It has been done. However, the pressure conditions for the a strong pressure conditions at about ^{50kg / cm 2 ~200kg / cm 2} , peel off the those crimped sensitive-pressure adhesive products, if spying information, and to re-bonding hands A special sealer that does not adhere to the surface and pressurizes with high pressure is required. When such a pressure bonding condition is performed twice or more, the number of times of pressure bonding is increased, and the color density in the developer layer is increased, which supports the above-described fraudulent act. More specifically, after the pressure-sensitive adhesive layers are pressure-bonded for the first time, after the pressure-bonded material is peeled off, when the pressure-bonding is performed again, when the pressure is not made larger than the pressure condition when first pressure-bonded, The pressure-sensitive adhesive layers do not adhere to each other.

  As the pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer applied in the present invention, those used in conventional pressure-sensitive folding mail forms can be used. In general, a pressure-sensitive adhesive layer can be formed by applying a coating liquid composed of an adhesive main agent, an adhesive strength adjusting agent, additives and the like to an opaque substrate. Adhesive base polymers used in the above pressure sensitive adhesive include natural rubber, modified natural rubber, synthetic rubber such as styrene-butadiene rubber, acrylonitrile-butadiene rubber, ethylene-vinyl acetate copolymer resin, acrylate resin , Vinyl chloride resins, vinylidene chloride resins, etc. in the form of solutions or emulsions, proteins such as casein, gelatin, cellulose derivatives such as carboxymethyl cellulose, hydroxymethyl cellulose, saccharose such as oxidized starch, esterified starch, etc. Natural polymer compounds such as polyvinyl alcohol, polyacrylic acid, styrene-butadiene latex, polyvinylpyrrolidone, acrylonitrile-butadiene latex, styrene-maleic anhydride copolymer, etc. Soluble synthetic polymer compound or latices can be used in combination.

  Further, silica, kaolin, clay, calcium carbonate, aluminum hydroxide, titanium oxide, zinc oxide, melamine resin particles, benzoguanamine resin particles, starch particles and the like can be used in combination for the purpose of controlling adhesiveness. It is also possible to use a release agent in combination with the purpose of controlling releasability. For example, various paraffins, waxes, fatty acids or derivatives thereof, higher alcohols, metal soaps, silicone resins and the like are not impaired. Can be used in a range. Furthermore, an antistatic agent, a thickener, a dispersant, an antiseptic, an antioxidant, an anti-aging agent, an anti-ultraviolet agent, an antifoaming agent, etc. may be added to the pressure-sensitive adhesive used in the present invention as necessary. it can.

The pressure-sensitive adhesive layer is prepared by adjusting a coating solution of the materials listed above, and using known coating apparatuses such as various blade coaters, roll coaters, air knife coaters, bar coaters, curtain coaters, gravure coaters, and gate roll coaters. Can be formed. The thickness of the pressure-sensitive adhesive layer, as in harmony with the peel and adhesive property can ^{take, 5g / m 2 ~30g / m} 2 approximately in a dry state is preferred.

(Developer layer)
Examples of the electron-accepting developer contained in the developer layer 4 include clays (for example, activated clay, acid clay, attapulgite, bentonite, colloidal silica, aluminum oxalate, etc.), organic acids (for example, fragrances such as salicylic acid). Group carboxy compounds or metal salts thereof), mixtures of organic acids and metal compounds, acidic polymers (eg phenol / formaldehyde resins, salicylic acid resins or their zinc, magnesium, aluminum, calcium, titanium, manganese, And polyvalent metal salts such as tin and nickel).

A binder component such as starch or polyvinyl alcohol, or a conventionally known release agent such as silicone oil, paraffin, stearamide, polyethylene wax, or the like, or titanium oxide, White pigments such as calcium carbonate and zinc oxide are added and mixed as necessary, and the adjusted coating solution is printed and applied onto the pressure-sensitive adhesive layer on the opaque substrate of pressure-sensitive pressure-bonded products. Is done. The developer layer can be formed by printing by a known method such as gravure printing, screen printing, or bar coating. The thickness of the developer layer is in a dry state, a 0.1g / m ² ~10g / m ² approximately.

(Coloring agent layer)
A color former layer 5 containing a color former that reacts with the developer and develops color is provided. As this color former layer, a color former encapsulating microcapsule produced from a color former such as crystal violet lactone or benzoyl leucomethylene blue by an encapsulation method such as an interfacial polymerization method, an in situ method, a phase separation method or a coacervation method. In addition, a coating solution obtained by mixing a binder component such as polyvinyl alcohol, starch or natural rubber latex and a capsule protective agent such as starch powder or talc is applied on the pressure-sensitive adhesive layer of the opaque base material of the pressure-sensitive pressure-bonded product. In addition, it is formed by printing and coating. The color former layer can be formed by printing by a known method such as screen printing or bar coat printing. The thickness of the color former layer, in the dry state, is 0.1g / m ² ~10g / m ² approximately.

  The color former used in the color former layer is a known one, for example, a blue color former such as crystal violet lactone, and a black color former such as 2-anilino-3-methyl-6-N-methyl-pentylaminofluorane. A red color former such as 2-chloro-3-methyl-6-diethylaminofluorane or a green color former such as 2-dibenzylamino-6-diethylaminofluorane can be arbitrarily selected.

  In the pressure-sensitive pressure-sensitive adhesive product of the present invention, the electron-donating color former contained in the color developer layer is in contact with the color developer layer possessed by one piece and the developer layer possessed by the other piece, and the pressure at the time of crimping. The microcapsule encapsulating is broken and reacts with the electron-accepting developer contained in the developer layer to develop color. When the surface is peeled off and the action of pressing again to restore the original color, the color development in the developer layer is higher in color than the one seen at the first time, or the color development is uniform. Instead, unevenness occurs. In order to generate this phenomenon, it is necessary that the color former layer does not destroy all the microcapsules encapsulating the electron donating color former contained in the color former layer at the first pressurization. When the crimping surface is peeled off, the personal information written on the crimping surface is stolen, and the act of crimping again (illegal act) is performed, the above-mentioned color former layer destroys the microcapsules that have not been destroyed at the first time. Then, it reacts with the developer layer and develops a color at a density higher than the color density at the first pressing.

  In addition, as described in the description of the pressure-sensitive adhesive layer, when the pressure-bonded layer is peeled off and then re-bonded, the pressure-sensitive adhesive layer must be made larger than the pressure condition at the time of first bonding. Since the adhesive layers do not adhere to each other, a larger pressure is applied to the contact surface between the developer layer and the color former layer. As a result, the portion of the color former layer that is not destroyed by the first press-bonding is destroyed, and reacts with the developer layer to obtain a higher color density.

  In order to exhibit the above color development function, the color former layer has a relatively small particle size of microcapsules and an average particle size of 2 μm to 7 μm is used for general pressure sensitive paper (carbonless paper). It is preferable to add about 20 to 50% more in the color former layer than the ratio.

(Pressure confirmation method for pressure-sensitive pressure-sensitive products)
A method for confirming the pressure-sensitive pressure-bonded product will be described with reference to the flowchart of FIG.
As the start of the method for confirming whether or not the pressure-sensitive pressure-bonded product has been illegally used, information such as personal information is recorded on the pressure-bonded surface of the pressure-sensitive pressure-bonded product. (S101)
In order to conceal the recorded information and send (distribute) it to a designated person, it is folded along the planned folding line, and the pressure-sensitive adhesive layers provided on one piece and the other piece come into contact with each other and adhere to each other So that it is pressurized. This process is the first pressure bonding. (S102)
Next, the pressure-bonding surface of the pressure-sensitive pressure-bonded product bonded in S102 is peeled off. (S105)

A density at which the developer layer is colored by the reaction with the color developer layer after being pressed in S102 is defined as a color density A.
After the pressure-bonding surface is peeled off in S105 described above, the color development state in the developer layer on the peeled surface is checked for confirmation. (S106) If the color density is color density A (YES), correct handling has been performed, that is, it is normal, and the designated end user can confirm the information content recorded on the peeled surface. . (S107)

After the first pressure-bonding process (S102), pressure-sensitive pressure is pressure-bonded by a third party who is not the subject person of personal information recorded in the pressure-sensitive pressure-bonded product (hereinafter referred to as a designated end user). I peeled off the crimping surface of the worn product and stole the information recorded on the crimping surface. This is cheating. (S103)
The third party folds along the planned folding line and pressurizes the pressure-sensitive adhesive layers provided on one piece and the other piece so that they are brought into contact with each other. (S104) This process is the second pressure bonding, and the pressure bonding is performed at a pressure larger than the pressure at the time of the first pressure bonding performed in S102. Assuming that the density at which the developer layer is colored by the reaction with the color developer layer in S104 is the color density B, the relationship B> A is established as compared with the color density A by the first pressure bonding. That is, the pressure applied in the second time is higher than the pressure applied in the first time, and the color density in the developer layer is higher.

The end user who is a designated person peels off the pressure-bonding surface of the pressure-sensitive pressure-bonded product bonded in S104 by hand. (S105)
After the pressure-bonding surface is peeled off in S105 described above, the color development state in the developer layer on the peeled surface is checked for confirmation. (S106) The color density is not the color density A (NO), but the color density B which is higher than the color density A, the pressure-sensitive pressure-sensitive product is handled illegally, and information to be concealed is stolen. Recognizing that there is a high risk, the above-mentioned damage content is notified to a predetermined contact, and measures are taken accordingly. (S108) In this procedure, an appropriate action is taken in consultation with the person in charge of the contact, such as changing the number of the designated account used. In the above case, when the predetermined color density is A, it is determined that the correct handling has been performed and no fraud has been performed. When the predetermined color density is B, it is determined that the pressure-sensitive crimped product has been handled illegally.

Next, the present invention will be described more specifically with reference to examples. Hereinafter, unless otherwise specified, parts or% is based on mass.
Example 1
As an opaque substrate, gravure printing is performed on the entire surface of one side of a high-quality paper having a basis weight of 80 g / m ² (thickness 72 μm) using the following pressure-sensitive adhesive layer coating solution, and 10 g / m ^{2 in} a dry state. A pressure sensitive adhesive layer was formed.
(Pressure-sensitive adhesive layer coating solution)
Acrylate ester emulsion; (AE-923, manufactured by Nippon Synthetic Rubber Co., Ltd.):
85 parts Kaolin; (Engelhard, Ultra White-90): 35 parts Starch particles; 30 parts Water: 180 parts

Dividing into one piece and the other piece with the planned folding line located at the center of the opaque base material as the boundary, the following manifestation is formed on the pressure-sensitive adhesive layer with the one piece. A developer layer having a thickness of 7 g / m ² was formed by gravure printing in a pattern as shown in FIG.
(Developer layer coating solution)
Polyvinyl alcohol (Kuraray, Poval PVA-110) 5 parts Developer (containing metal salt of alkylphenol resin and salicylic acid derivative metal salt) 2 parts Water 50 parts

In the other piece, a color former layer having a thickness of 10 g / m ² when dried with the following color former layer coating solution on the pressure-sensitive adhesive layer is shown in FIG. 1 by screen printing. The pressure-sensitive pressure-bonded product of Example 1 was produced with such a pattern.
(Coloring agent layer coating solution)
Microcapsules encapsulating red electron-donating color former (average size of microcapsules 4 μm) 10 parts Polyvinyl alcohol (GL-05 manufactured by Nippon Synthetic Chemical Industry Co., Ltd.) 2 parts Talc 0.5 parts Water 37.5 parts

Information including personal information was recorded on the surface of the pressure-sensitive pressure-bonded product provided with the developer layer and the color former layer by an electrophotographic recording method. The above folding line is pre-processed with a perforation, and is folded so that the pressure-sensitive adhesive layers provided on one piece and the other piece are in contact with each other and bonded together. No. sealer (Dai Nippon Printing Co., Ltd. MS-9100) was pressed under pressure of 200 kg / cm ² .

  After the crimping, the person himself / herself of the personal information recorded on the pressure-sensitive crimping product peeled the crimping surface by hand and looked at the color development state of the developer layer. The color density was equivalent to A. This means that after crimping, the crimping part is illegally peeled off, and the information on the crimping surface has not been stolen and proved to be handled correctly, and is recorded on the pressure-sensitive crimping product. Only the subject person of the personal information was able to confirm the information content hidden by peeling the pressure-bonding surface.

(Example 2)
A pressure-sensitive pressure-sensitive adhesive product was produced in the same manner as in Example 1 above, and an electrophotographic recording system was provided on the surface of the pressure-sensitive pressure-bonded product provided with a developer layer and a color former layer as in Example 1. I recorded information including personal information. The above folding line is pre-processed with a perforation, and is folded so that the pressure-sensitive adhesive layers provided on one piece and the other piece are in contact with each other and bonded together. No. sealer (Dai Nippon Printing Co., Ltd. MS-9100) was pressed under pressure of 200 kg / cm ² .

After the crimping, a third party who is not the subject person of the personal information recorded on the pressure-sensitive crimped product peels off the crimped surface of the pressure-sensitive crimped product by hand and steals the information recorded on the crimped surface. It was. Thereafter, the pressure-bonding surface from which the third party was peeled was pressure-bonded again. The pressure condition at the time of pressure bonding at this time was 250 kg / cm ² . The subject person of the above personal information peeled off the pressure-bonded surface of the pressure-bonded pressure-bonded product that was re-bonded by hand. Looking at the color development state in the developer layer on the peeled surface, the color density B is higher than the color density A, and the pressure-sensitive pressure-sensitive product is handled illegally, and there is information to be concealed. Recognized that there is a high risk of being stolen. The subject person of the personal information notified the details of the damage to a predetermined contact and took appropriate measures to prevent damage to the subject person.

DESCRIPTION OF SYMBOLS 1 Pressure-sensitive crimping product 2 Opaque base material 3 Pressure-sensitive adhesive layer 4 Developer layer 5 Color developer layer 6 Folding line 7 One piece 8 The other piece

Claims (3)

It is divided into one piece and the other piece on the boundary of the folding line of the opaque base material,
The pressure-sensitive adhesive layers provided on the surfaces facing each other with the planned folding line as a boundary are bonded together, peeled off, and re-adherable,
The pressure-sensitive adhesive layer and a developer layer containing an electron-accepting developer are sequentially provided on one side of the opaque substrate in the one piece, and the sensitive layer is provided on one side of the opaque substrate in the other piece. A pressure-adhesive layer, a color former layer containing a microcapsule encapsulating an electron-donating color former is provided in this order, and is folded along the planned folding line. A pressure-sensitive pressure-sensitive adhesive product, characterized in that the developer reacts with an electron-accepting developer and the developer layer can develop color.   The developer layer and the color former layer are provided at a position symmetrical to the expected folding line and on a part of the pressure-sensitive adhesive layer. The pressure-sensitive crimping product according to claim 1. A method for confirming whether the pressure-sensitive pressure-bonded product according to claim 1 or 2 has been illegally peeled off and re-adhered after being crimped,
By pressure bonding, a part of the microcapsules is destroyed, the electron-donating color former reacts with an electron-accepting developer, and the pressure-sensitive pressure-sensitive adhesive product in a state where the developer layer develops color at a predetermined color density. When you peel off the crimping surface,
A method for confirming a pressure-sensitive pressure-sensitive adhesive product, characterized by determining whether the pressure-sensitive pressure-sensitive adhesive product has been illegally peeled off and reattached by looking at the color development state of the peeled surface of the developer layer.

Images