JP2015025860A - Scratch label - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a scratch label that solves a conventional problem of easy production of an imitation thereof by an unauthorized person, as a sole means to conceal classified information is a scratch hiding layer, and also a problem of easy forgery of a scratch label having a hologram layer on a top layer, which has been developed to prevent such forgery, however, in which the hologram layer is visible by a third party and an unauthorized person can easily create a scratch label having a similar optical effect.SOLUTION: A hologram layer is arranged below a scratch hiding layer of a scratch label, so as to conceal a hologram design thereof from a third party. Mere scratching does not cause the hologram to appear. Only when the scratch hiding layer is interfacially peeled, classified information and a hologram reproduction image simultaneously become visible. Such unexpectedness enhances a forgery prevention effect in the scratch label.

Description

  The present invention is a scratch label provided with a scratch concealment layer for concealing the secret information display part on the base material, and by attaching the scratch label so as to cover the secret information display part on the base material. The present invention relates to a scratch label that can conceal the secret information and that can be visually recognized when the scratch concealment layer is scraped off.

  In particular, after removing the scratch concealment layer, the label is peeled off, that is, if the remaining part is peeled off, a clear hologram reproduction image appears in a form overlapping with the confidential information, and the authenticity determination for counterfeit or altered products It is related with the scratch label which makes it easy to make forgery and alteration very difficult.

  In the present invention, the “base material” means a prepaid card itself provided with a secret information display section, or various sheet shapes, card shapes, or other shapes in which secret information is recorded in advance. The material may be any material using a plastic material, a metal material, or any other material, and is not particularly limited as long as the secret information can be concealed by the scratch label of the present invention.

  Further, in the present invention, “secret information” means “information that should be disclosed only to a legitimate right holder who can know the secret information”, and means for providing the “secret information” on the substrate includes: Appropriate printing methods, methods using an ink jet method capable of forming individual information, and laser printing, etc., as well as characters, figures, symbols, and any other “information” that can be at least visually recognized Can be used.

  Of course, “secret information” on the base material and other “information” carried by the scratch label (which may be concealed or disclosed), or various combinations of these “information” The information may be synthesized by an information synthesizing means or the like (including encryption processing), and “information disclosed to the rightful owner” is formed.

Further, in the present invention, “scratch” means an act of scraping the “target layer” with a coin, a nail, etc., and an act of partially or completely removing the “target layer”. To do. In particular, since the purpose is to visually recognize what is behind the “target layer”, even if “partial scraping” is used, all “target layers” in the “scored area” Is removed without leaving any shavings. (Hereinafter, this scratch operation is also referred to as “scratch-off”.)
In the present invention, the “high refractive index transparent resin layer” means a “transparent resin layer having a high refractive index”, and here, it means a transparent resin layer having a refractive index n exceeding 1.7.

  The refractive index n is represented by a value obtained by dividing the light velocity (c) in vacuum by the light velocity (v) in the medium (more precisely, the phase velocity). Unless otherwise specified, the refractive index value is This is for light having a D-line wavelength of 589.3 nm of sodium.

  In the present specification, “parts” indicating blending are based on mass unless otherwise specified. The “hologram” includes those having a light diffractive function such as a diffraction grating.

(Main applications) In addition to the spread of communication networks and computer networks, the spread of computer terminals that transmit and receive data and their portability have progressed, and the proportion of tertiary industries in Japan has also grown rapidly, Furthermore, various services are also provided by public institutions.

  Tertiary industries include information and communications, transportation, postal, wholesale, retail, finance, insurance, real estate, goods rental, academic research or specialized technical services, lodging, food and beverage services , Life-related service industry, entertainment industry, education or learning support industry, medical or welfare-related business, electricity business, gas business, heat supply business, water service business, public service, barber beauty related business, complex service business, leisure service, rental service, outsourcing Services, transportation services, restaurant services, energy, entertainment, consulting, and other service industries are positioned as traders and public institutions involved in such tertiary industries, not only selling goods but also providing specific services. Since the company is also paying for it, the service to customers and consumers is different even when the goods are sold differently. To provide, or, customers and consumers (hereinafter, also referred to as customers, etc..) Fees and compensation from the (hereinafter also referred to as a fee, and the like.) Is often doing the recovery of.

  For example, as a method of collecting charges and consideration, a method of automatically deducting consideration corresponding to the service used from a bank account of a customer or the like, or a credit contract with a credit sales company in advance, The method of settlement of usage fees is a general form of collection of charges, etc., and is used for settlement of charges for public services such as electricity charges, gas charges, water charges, and various information provision services. Widely used as a method. In addition, the prepaid card sales form is also a popular way to collect charges for services that should be provided in the future. Collection of charges, fares, and other considerations Widely used.

  Furthermore, the “articles” to be sold are data terminal devices, personal computers, desktop PCs, online game machines, telephone line equipment, data line terminators such as facsimiles and modems, radio receivers, television receivers, etc. Devices (information devices), in particular portable communication devices (terminals) that are communication devices that can be carried and used, and portable information devices (terminals) that are portable and usable information devices, that is, portable music players, IC recorders , Portable DVD player, pocket computer, smart book, tablet PC, PDA, calculator, portable game console, digital camera, video camera, laptop computer, laptop computer, handheld computer, portable printer, portable scanner, portable modem, electronic dictionary, Electronic notebook, electronic book , Portable data terminal, mobile phone terminal, PHS terminal, pager terminal, portable radio, mobile TV, One Seg, wristwatch, pocket watch, hearing aid, handheld GPS, security buzzer, video phone, GPS receiver, car navigation terminal, remote control terminal , Electronic money, digital keys, digital locks, IC cards for digital cards, point cards, etc., which will be delivered to customers, such as music, movies, game software, etc. , Multimedia related content such as Web animation, etc. as these “articles”, download sales, cloud computing, music distribution, IP broadcasting, Internet broadcasting, Internet TV, Internet broadcasting network, Internet radio, podcast, Deo-on-demand, it is also widely used method of delivering using means such as a video sharing service.

  And, the “goods” that are the subject of these added values, and those that give customers “qualifications” and “rights” that can receive various “services” as described above, that is, their added value. Various types of cards are widely used as a medium for determining whether a person requesting receipt or use of a cardholder is a person who has a valid "qualification" or "right". It is used for.

  These cards are used in many fields as ID cards, membership cards, cash cards with a monetary value, credit cards, prepaid cards, commuter passes, coupon tickets, etc. Is steadily increasing. Among these, prepaid vouchers for providing services using the prepaid method, so-called prepaid cards, have a particularly high quantitative increase rate, and are widely used as prepaid amounts for a certain unit and value information for that amount can be used. It is popular.

  On the card, value information and identification information are recorded as picture or character information printed or printed on the base material, and a magnetic recording unit or optical recording unit provided on the base material, depending on circumstances. Is recorded as machine-readable information on the IC chip, holds various information according to the application, and makes it possible to use the information in various scenes.

  In a telephone card that can be said to be a representative of the prepaid card, value information and identification information are recorded on the telephone card itself, and each time the telephone card is used at a telephone terminal, the call charge is reduced from the value information recorded on the telephone card. However, after that, the balance was recorded again on the telephone card. After that, as a method for dealing with telephone card counterfeiting and alteration, only a random “number” was printed on the telephone card. The telephone card is assigned to the host computer that manages the issuance, registration, sale, use, deduction processing, deregistration, etc. of the telephone card. The so-called “scratch-off” that you can make a call for the amount of money used when accessing System telephone cards ", ie, a method of using the format telephone cards to be delivered the confidentiality of the permitted number (secret information.) Have been put into practical use, increasingly also the card issuing quantity.

  In this system, if a license number is leaked at the distribution stage, it will only cause troubles such as illegal service receipt by a person who obtained the license number illegally, and the inability to provide legitimate use to authorized buyers. In addition, there is no longer any means to determine whether the “actual use of the authorization number” is an act of an authorized purchaser or an act of an unauthorized person, and the fraudulent act cannot be specified. Therefore, it becomes impossible to specify the amount of damage and claim damages based on the specification.

  For this reason, after the permission number is printed on the telephone card, the permission number is temporarily covered with a concealable layer that can be scraped (scratched) in order to prevent the permission number from being easily stolen by a third party. This is a system in which a telephone card purchaser (authorized purchaser) scratches and removes the concealment layer, reads the concealment number concealed beneath it, and uses the concession number. Adoption of “off method” is indispensable.

  For example, as an access method for international calls, a contract is made with a telephone company (referred to as a relay company) that serves as a relay base, and by paying a predetermined amount (for example, 1,000 yen), the number unique to the contractor is described. When you make an international call, enter the access number displayed on the card (toll-free. This is secret information) to access the relay company, and then give it to the individual subscriber A system that allows you to make a call by entering the other party's phone number after entering your personal number, making an international call at a low charge, and sending a commercial for a specified time when you access a relay company As a method that can be used as a device, it is becoming widespread.

  When this system is joined, the personal number given to the individual is processed so that it is completely invisible from the outside by scratch processing (meaning concealment processing that can be scratched). The personal number appears for the first time by peeling.

  Conventionally, in event lotteries, game cards, etc., it is a hidden layer that can be used to scratch the result of lottery such as pictures, characters, numbers, etc. After being concealed, the concealment layer capable of scratching can be seen by rubbing the concealment layer capable of scratching with a nail or a coin so that the contents of the secret information displayed under the concealment layer can be seen. Printed prints are known. These prints are generally provided with a concealable layer that can be scratched at multiple locations, and one concealed layer that appears to be a “hit” is scraped off with coins, etc. The information display is visually confirmed. If two or more concealment layers are scraped off, the rule is often invalid.

In addition, tickets used for services in speed lotteries and fast food restaurants have numbers and letters (secret information) printed on the base material, and then a concealable layer that can be scratched on them. When the lottery purchaser or ticket recipient scrapes the concealment layer with a nail or a coin, the numbers and letters printed on the base appear. To do. A system in which this number or character that appears is compared with a predetermined number or character, and if it matches, the winning is determined (the secret information is encrypted in a certain sense, it is encrypted information, and other information In other words, it is a mechanism in which “winning” is determined by collation, in other words, deciphering.) In addition, an instant lottery game card or instant lottery with secret individual data such as a lottery code hidden by a concealable layer that can be scratched In merchandise, etc., confidential individual data can be used for complex games, and when the concealment layer is scraped off, a message such as a letter of “around” or a prize number will appear. In addition, the “scratch method” is also used as a “simple lottery”, and it can be used for various lotteries such as lottery tickets and when purchasing products. There are means for providing free gifts, teaching tools, and game cards, but more specifically, at the mobile phone shop, there are 11 scratch frames, and only 5 of them are rubbed and your mobile phone number The number of prizes that can be matched is decided, and on the back side, special discount coupons for new contracts are attached, and used for scratches such as 5 times points for acquiring point card members at major drug stores Things to do, those that can be used as coupons from the day of membership registration, those that provide a coupon usage period, sealed in egg packs to major supermarkets at major egg makers, If you apply the ticket on a postcard and apply to the address listed on the back, you will receive a gift certificate that you can use at the place of purchase, a housing exhibition hall, a fast food shop , Amusement parks, sightseeing spots, sports watching, etc., food industry, fashion industry, beauty industry, medical industry, etc. A winning pattern is scratch-printed, and a lottery layer such as an instant lottery or a scratch lottery is formed by scratching the scratch pattern. When the mark can be put out, it is determined as “winning”, the number of times until the mark is put out, the level of “winning” (for example, product price) determined by the trajectory cut, the pattern is vertical and horizontal There are some which are provided in a grid and determine the level of “hit” depending on where the mark is located in the grid.

Also for scratch triangle lottery and fortune lottery, character lottery, toy lottery, lottery for food such as confectionery, lottery prize set such as lottery for daily necessities, prize set using dice, wheel tie Shooting prize set, toy fishing and thousand fishing prize set, holed treasure box prize set, gacha gacha and capsule prize set, easy-to-grid prize prize set, all-you-can-fill and ball case play prize set, seasonal lottery set and prize lottery set, For event prize sets such as summer fireworks prize set, summer festival gift lottery set, summer summer goods lottery set, Christmas prize lottery set, New Year prize lottery set, year-end and New Year prize lottery set, etc.
Furthermore, business card size and postcard size used for store events, such as shopping coupons and discount coupons to promote store visits, items that use scratches for direct mail of event guidance, postcards for guidance to stores In addition to scratch printing on crimped postcard DM such as V-fold and Z-fold, etc., scratching dozens of times once a day, depending on the number of times, at gift shops, furniture and clothes stores There are items that you can get for sale, items that are decided at the four corners of the scratch card, and those that are structured so that you can efficiently collect the items you want by referring to this .

With the spread of such “scratch method”, as “secret information”, not only simple “around” or “out of” characters, serial numbers and other numbers, but also barcodes, two-dimensional barcodes, etc. Machine recognition codes, customer data, messages, etc. All words / symbols, or specific marks, etc. are constructed in a fixed or variable form. Furthermore, these “information” uses a coloring mechanism or decoloring mechanism. Proposals have also been made of things that can be read out and those that can read the "secret information" only with a specific light source.
(Prior art) As mentioned above, automatic debits from bank accounts and payments through credit sales companies are very solid methods, but the prior procedures are cumbersome and until the service starts. However, for services that are indispensable to use such as public charges, even if it is an effective fee collection method, it is not always appropriate as a fee collection method for arbitrary services for customers. If the procedure for paying the fee is cumbersome, or if the user waits for several days before the service can actually be used, the customer is forced to use the service.

  For this reason, the fee collection method using a prepaid card is a very convenient method and is very effective depending on the service, i.e., in the same form as when purchasing ordinary goods, However, the so-called “prepaid card method” has been expanded since the prepaid card can be used from the time of purchasing the prepaid card, but on the other hand, the problem of forgery or alteration of the prepaid card In other words, since a general prepaid card uses a method of recording the remaining compensation magnetically, illegal use by the method of tampering with the magnetic recording has become widespread. Recognizing that the "prepaid card method" using records is a minor problem in terms of safety I wanted.

  For this reason, the card itself does not keep a record of the amount of money, only the “authentication number etc.” is kept as “secret information”, and the person who purchased the card gives the “number etc.” A new “prepaid card service” in which various services can be received by “declaring” has become widespread. Since this “number etc.” is concealed as “secret information” by a concealment layer that can be scratched, it is also called a number-type prepaid card compared to a conventional magnetic prepaid card.

  This number-type prepaid card includes communication systems such as public telephone cards, mobile phone cards, international telephone cards, payment systems such as game software, music software, and other paid software payment cards, shopping cards, gift cards, An article purchasing system such as a coin card has been put into practical use.

  The scratch label of the present invention is such a “base material” such as a card provided with “secret information” having added value, that is, a “base material” constituting the card, etc. Is attached to cover the “secret information”, conceal the “secret information” from a third party, Only a person who has a legitimate right to receive the disclosure can confirm the “secret information” only after scratching the scratch concealment layer of the scratch label.

  As a technique for achieving this object, Patent Document 1 discloses that a person who purchases a card does not keep a record of the amount of money in the card itself but keeps only “authentication number etc.” as confidential information. A variety of services can be received by "declaring" the "number" etc. As a prepaid card service, a concealment layer etc. that can be scratched to conceal this "number etc." as confidential information A technique for concealing is disclosed.

  Also, scratches that are destroyed by printing information that you want to keep secret temporarily on a sheet with a printer, etc., and scratching on the upper layer of those secret information display parts, such as instant lottery tickets, secret information transmission cards, quiz cards, etc. “Scratch cards” formed by forming a possible concealing layer are already widely used, but since these concealable concealing layers can be formed from materials that are relatively easily available, It is easy to carry out alteration.

For example, at the pre-sales stage, a sales representative scratches and peels off the scratchable concealment layer of an instant lottery ticket such as a lottery ticket, and checks the lottery number and the winning lottery ticket in advance by looking at the lottery number. By re-creating a concealable concealment layer on the lottery number display area again, the camouflage can be seen so that it is restored to its original state and the fraud is not noticed. However, since it is also physically possible to engage in fraudulent activities such as making a specific customer make money by selling a winning lottery ticket to an acquaintance, as a countermeasure against this, A method has been proposed in which a capsule is inserted to determine authenticity. However, with this method, when a legitimate user scratches, it can be expected to have a promotional effect that appeals to the sense of smell such as the smell of roses, but after an unauthorized person scratches once, it can be scratched again containing the same fragrance. Even if a concealing layer is provided, it has been difficult for a legitimate user who has subsequently obtained to leave an improper trace that can be easily read visually. (For example, see Patent Document 2.)
As described above, as a method of directly preventing the camouflaging action, a hologram layer on which a hologram image is formed is provided on the concealable concealment layer or straddling the concealment concealment layer and the base material. A technique has also been developed that makes it difficult for a person who wants to perform the recognition of the existence of a hologram image to prevent a fraudulent act with the difficulty of forming a “hologram layer”. (For example, refer to Patent Document 3 or 4.)
However, since these technologies have disclosed the existence of the hologram layer and the hologram design to a third party in advance, the technology having an optical effect similar to that of the hologram reproduction image is forged over a sufficient amount of time. Originally, this configuration itself is designed to scrape the hologram layer and the scratchable concealing layer at the same time. While bringing in a modified product with no layer at all, it had the disadvantage of not preventing fraud such as acting as if it were a genuine product.

JP-A-10-214320 JP 2001-47777 A JP-A-11-34565 JP 2005-305844 A

  In the present invention, a hologram layer is provided behind the scratch concealment layer so that the presence of the hologram and the hologram design can be concealed to a third party, and the “secret information” can be visually recognized by scratching the scratch concealment layer. However, the existence of the hologram is still concealed, and for the purpose of improper use or for the purpose of confirming authenticity, if the remaining part is peeled off, a clear hologram reproduction image appears, and the existence of the hologram for the first time The present invention provides a scratch label having a high anti-counterfeiting property.

  And, by attaching the scratch label of the present invention to the base material so as to cover the “secret information” provided on the base material of the card or the like as described above, so-called “scratch card”, It is possible to make “a card or the like to which the scratch label of the present invention is attached”, that is, “a scratch card or the like in which secret information is concealed”.

  In the scratch card or the like with the scratch label of the present invention attached, the hologram design is not disclosed to a third party or even to the parties, so that an unauthorized person attaches the scratch label of the present invention to the scratch card. Even if you get multiple copies, etc., you do not notice the existence of the hologram first. Even if you know the structure and existence of the hologram by some means, is it the only design that the hologram design is unified? , It is impossible to know whether it is an arrangement of multiple designs arbitrarily or a specific hologram design corresponding to specific confidential information. It is virtually impossible to make "counterfeit goods" for scratch cards with confidential information other than To provide a scratch label.

  Furthermore, as the hologram layer has a high scratch resistance, it is possible to suppress the deterioration of the sharpness of the hologram reproduction image due to the scratch, and the layer exposed when the remaining part is peeled off as a high refractive index layer, The hologram reproduction image that appears will be made clearer, and a visible message such as “open” will be displayed as the peeled trace by the surface activation treatment of the peeling interface, In addition, by providing pigments with different average particle diameters in the scratch concealment layer, it is possible to leave a peeling mark when the label is peeled off, and provide a scratch label that can significantly enhance its anti-counterfeiting property. To do.

To achieve the above objective,
The first aspect of the scratch label of the present invention is:
A scratch label for concealing confidential information provided on a substrate, wherein the scratch concealment layer, the relief hologram forming layer, and the peelable adhesive layer are configured in this order, and at the same time, the relief hologram forming layer and the release layer The interface of the adhesive layer is subjected to a pattern-like surface activation treatment, and the interface includes the pattern-like surface activation treatment interface, and the scratch concealment layer is removed by scratching, whereby the secret information Can be visually recognized, and is regenerated from the relief hologram forming layer when peeling occurs at the interface between the relief hologram forming layer and the peelable adhesive layer, excluding the patterned surface activation treatment interface. The relief hologram reproduction image is visible.

According to the scratch label of the first aspect,
A scratch label for concealing confidential information provided on a substrate, wherein the scratch concealment layer, the relief hologram forming layer, and the peelable adhesive layer are configured in this order, and at the same time, the relief hologram forming layer and the release layer The interface of the adhesive layer is subjected to a pattern-like surface activation treatment, and the interface includes the pattern-like surface activation treatment interface, and the scratch concealment layer is removed by scratching, whereby the secret information Can be visually recognized, and is regenerated from the relief hologram forming layer when peeling occurs at the interface between the relief hologram forming layer and the peelable adhesive layer, excluding the patterned surface activation treatment interface. It is possible to provide a scratch label characterized in that a relief hologram reconstructed image can be visually recognized. Even if the existence of the hologram and the hologram design can be concealed and the scratch concealment layer can be scratched to make “secret information” visible, the existence of the hologram is still concealed, In addition, it is possible to provide a scratch label having a high anti-counterfeit property capable of confirming the presence of a hologram.

The second aspect of the scratch label of the present invention is:
The patterned surface activation treatment is a light treatment or a physical treatment.

According to the scratch label of the second aspect,
The patterned surface activation treatment can provide a scratch label according to the first aspect characterized in that the surface activation treatment is a light treatment or a physical treatment. It is possible to reliably provide a scratch label with improved anti-counterfeiting properties.

The third aspect of the scratch label of the present invention is:
The pattern of the surface activation treatment in the form of a pattern is constituted by a set of fine patterns.

According to the scratch label of the third aspect,
The pattern-like surface activation treatment can be provided with the scratch label according to the first or second aspect, characterized in that the pattern is constituted by a set of fine patterns. It is possible to provide a scratch label in which the appearance of the “pattern” at the time is clearer and the anti-counterfeiting property is enhanced.

The fourth aspect of the scratch label of the present invention is:
The copy-forgery-inhibited pattern printing is performed on the surface of the scratch concealing layer opposite to the surface on which the relief hologram forming layer is formed.

According to the scratch label of the fourth aspect,
Providing a scratch label according to any one of the first to third aspects, wherein a copy-forgery-inhibited pattern printing is performed on a surface of the scratch concealing layer opposite to a surface on which the relief hologram forming layer is formed. It is possible to provide a scratch label that prevents the scratch concealment layer from being altered and has improved anti-counterfeiting properties.

The fifth aspect of the scratch label of the present invention is:
A transparent substrate is provided between the scratch concealing layer and the relief hologram forming layer.

According to the scratch label of the fifth aspect,
A transparent substrate is provided between the scratch concealing layer and the relief hologram forming layer, so that the scratch labels of the first to fourth aspects can be provided, and more stable scratches are possible. A scratch label can be provided.

The sixth aspect of the scratch label of the present invention is:
The refractive index of the peelable adhesive layer is the same as the refractive index of the relief hologram forming layer, or the difference in refractive index is 0.1 or less.

According to the scratch label of the sixth aspect,
The scratch label according to any one of the first to fifth aspects, wherein a refractive index of the peelable adhesive layer is the same as a refractive index of the relief hologram forming layer, or a difference in refractive index thereof is 0.1 or less. Thus, it is possible to provide a scratch label that further enhances the secrecy of the hologram layer and improves its anti-counterfeiting property.

The seventh aspect of the scratch label of the present invention is:
The peelable adhesive layer is a high refractive index transparent resin layer, and the peelable adhesive layer has a refractive index of 1.7 or more.

According to the scratch label of the seventh aspect,
Provided are scratch labels according to the first to sixth aspects, wherein the peelable adhesive layer is a high refractive index transparent resin layer, and the peelable adhesive layer has a refractive index of 1.7 or more. Therefore, a clearer hologram reproduction image can appear, and a scratch label with high anti-counterfeiting properties can be provided.

The eighth aspect of the scratch label of the present invention is:
The scratch concealing layer contains a pigment having an average particle diameter of 1.0 μm to 10 μm and a fine pigment having an average particle diameter of 0.01 μm to 0.1 μm.

According to the scratch label of the eighth aspect,
The scratch label according to the first to seventh aspects, wherein the scratch masking layer contains a pigment having an average particle diameter of 1.0 μm to 10 μm and a fine pigment having an average particle diameter of 0.01 μm to 0.1 μm. When the scratch label is peeled off, the peeling mark remains on the scratch concealment layer, and a scratch label with significantly improved forgery prevention can be provided.

  The “secret information” concealed by the scratch label of the present invention includes a personal identification number, personal authentication number, account number, other personal number or symbol, lottery number or symbol, management number or symbol, or simply continuous Numbers or symbols that are effective when registered, the same number as a common key number that is an encryption key number, or a completely random number that is used as a scratch card or other base material. A person who is allowed to know such as a number that is generated when making it so that no one including the creator knows the contents of the number (meaning a regular purchaser. Of course, a system designer for scratch cards etc. Or a scratch card issuer, etc.) or a number or symbol that can only be seen by others and cannot be physically seen by others. A.

  Also, depending on the use of the scratch card, etc., not only numbers or symbols but also characters, figures, marks, etc., which can be commonly recognized by the individual and the supplier of the scratch card, etc. Any of these can be used. The recognition method also has a recognizable method other than visual, for example, an optical reading method, a magnetic reading method, or any other physical or chemical reading method while having at least information that can be recognized by visual confirmation. In order to increase the anti-counterfeiting, it is also possible to include an optical reading method using the hologram reproduction principle in the relief hologram reproduction image that can be viewed with overlapping the secret information.

  As a method of providing this "secret information" on a substrate such as a scratch card, as a method for forming variable information, a thermal melt transfer method, a sublimation transfer method, an optical or physical direct drawing method, an electrophotographic method, and Examples of the method for forming fixed information include an ink jet method, a gravure printing method, an offset printing method, a letterpress printing method, an intaglio printing method, and a screen printing method.

  Alternatively, a method may be used in which the base material itself is made of a coloring material or a decoloring material, and variable information or fixed information is recorded using the coloring principle or decoloring principle.

By these methods or methods, the “secret information” is formed on a substrate such as a scratch card, and
The scratch concealing layer, the relief hologram forming layer, and the peelable adhesive layer are formed in this order, and at the same time, a patterned surface activation treatment is applied to the interface between the relief hologram forming layer and the peelable adhesive layer. When the scratch concealment layer is removed by scratching, the “secret information” becomes visible, and when the label is peeled off, the interface other than the surface activation treatment interface of the relief hologram forming layer is the first time there. By sticking a scratch label on which the relief hologram reconstructed image reproduced from the image is visible on the substrate so as to cover the “secret information” formation part, the “secret information” is visually observed by a third party. Preventing legitimate reading and unauthorized reading, and legitimate users scratch the scratch concealment layer to It can be a scratch card, or the like that can decipher the information. "

  Here, on the other hand, the hologram means that a “three-dimensional object” to be reproduced as a hologram reproduction image is irradiated (illuminated) with a laser beam that is temporally and spatially coherent. Reflected and scattered (diffracted) “light” (which is called “object light”) on the surface of the “three-dimensional object” is incident on the photosensitive material at a predetermined angle, and on the other hand, the laser light itself ( This is called “reference light.”) Is incident on the photosensitive material at an angle different from the incident angle of the “object light” and interferes with the “object light” and the “reference light”. The “interference fringes” generated by the interference are recorded on the photosensitive material.

  This hologram forming method is one of the hologram forming methods by the photographing method, and is also called “two-beam bundle interferometry”.

  Since the “object light” and the “reference light” are coherent with each other, a clear interference fringe is generated in the photosensitive material, and the interference fringe is recorded.

  First, as a simple case, considering the case where the reference light and the object light are at an angle and both are parallel light, the difference in the length of the path (light path) to the photosensitive material surface of the two lights, Therefore, due to the difference in phase of the two light beams, they strengthen each other at one position on the surface of the photosensitive material and weaken at another position. As a result, the photosensitive material has an equal interval determined by the angle between the reference light and the object light. Interference fringes extending in the direction perpendicular to the surface of the photosensitive material are recorded.

  The contrast of the interference fringes is greatest when the amplitudes of the reference light and the object light are equal, and decreases as there is a difference. Since the object light is light that changes depending on the three-dimensional shape of the “three-dimensional object” and is not parallel light, the interference fringes are disturbed.

  However, the disturbance is caused by a change in the phase of the object light with respect to the reference light as a lateral shift of the interference fringe, and a change in the amplitude as a change in contrast. The photosensitive material records all the information on the phase and amplitude of the object light. Is done. A hologram obtained by developing the photosensitive material thus exposed becomes a hologram.

  In this hologram, the image of the object does not appear like a photograph taken with an ordinary camera, but it appears to be uniformly clouded (recorded as a refractive index distribution), Object information is completely recorded with fineness close to the wavelength of light.

  As this photosensitive material, a photoresist is used, and the photoresist surface is provided with irregularities of a desired depth by managing the development time of the photoresist. This is a relief hologram, and the irregularities are the same as described above. The depth and period are disturbed, and the disturbance includes information on the phase and amplitude of the object light.

  The uneven surface is a hologram relief surface, and the “photosensitive material layer having an uneven surface” at this time corresponds to the “relief hologram forming layer”.

  When a hologram in which interference fringes are recorded is illuminated with, for example, the same laser light as the reference light described above, the interference fringes recorded in the photosensitive material act as a diffraction grating that changes the traveling direction of the light.

  When light is incident on the diffraction grating, in addition to the directly transmitted light (zero-order diffracted light) that is transmitted as it is, plus the first order and minus the first order in the direction determined by the spacing of the grating, in this case, the spacing of the interference fringes. Produces diffracted light.

  When parallel light having a predetermined angle is used as object light and reference light at the time of hologram creation, the positive and negative first-order diffracted light when the hologram is illuminated are both parallel light. Advances in the direction in which the original object light passes through the photosensitive material.

  Since the actual interference fringes are disturbed by the phase and amplitude of the object light, the plus first-order diffracted light is disturbed so as to correspond to it, and the original object light is reproduced as it is. When observed through the hologram, the object image is three-dimensionally reproduced at the original position without being disturbed by the zero-order or minus first-order diffracted light. This image is called a direct image, and it becomes a virtual image because it looks like divergent light as if light came from an object. In addition, the minus first-order diffracted light reproduces an image that is reversed from the original object on the right side of the hologram. This is called a conjugate image and becomes a real image because the light is actually focused.

  When the direct image is observed by changing the viewing position, it can be confirmed that the relative positions of the three-dimensional object before and after are changed and reproduced three-dimensionally.

  This situation is the same also in the relief hologram, and when the hologram relief surface of the relief hologram forming layer described above is illuminated with a predetermined “reference light”, a direct image (hologram reproduction image) appears at a predetermined angle.

  The relief surface is filled with a peelable adhesive layer having a refractive index substantially the same as that of the relief hologram forming layer, that is, the refractive index is exactly the same or the difference is 0.1 or less. When formed in this way, the hologram relief surface and the peelable adhesive layer are integrated into a state that is regarded as “one optically uniform layer”, that is, optically There will be no interface, and no reflection or refraction will occur at this interface.

  This means that the hologram relief surface has been substantially eliminated, and it is no longer true that the “reflected light” from this interface appears in the reflection direction determined by a predetermined angle, “Real images that are conjugate images are not formed”.

  However, the interface between the relief hologram forming layer and the peelable adhesive layer is defined as “very easy to peel”, and when the force is applied to the relief hologram forming layer, peeling easily occurs from the interface. If it is set as `` state '' or `` only those who know that there is an interface can be peeled off '', after the interface peeling, from the hologram relief surface transferred to the peelable adhesive layer, Due to the difference in refractive index between the peelable adhesive layer and air, the interface, that is, the exposed surface of the peelable adhesive layer becomes a reflective surface, and “the reflected light from this interface is determined by a predetermined angle. The direct image appears in the direction, or the real image that is the conjugate image is formed. "

  The shape of the hologram relief surface has a depth of about 0.01 μm, and a pitch (meaning the period of irregularities) is a pattern in which irregularities with a pitch of about 1.0 μm are laid in a predetermined area without any gaps. Each of the uneven shapes generates “individual reflected diffracted light” every 1.0 μm, and the “individual reflected diffracted light” causes a light interference phenomenon with each other. It is visually recognized as a combined relief hologram reproduction image.

  Therefore, for example, when one of the 1.0 μm irregular shapes is regarded as a smooth small three-dimensional curved surface (the sectional shape of the hologram relief irregularities often repeats monotonic increase and decrease like a trigonometric curve. An example of this is a curved line.) On the three-dimensional curved surface, a fine dent or protrusion of the order of 0.001 μm is generated, or the curved surface itself is a curved surface deformed in the order of 0.001 μm. Mean deformation (meaning that the depth of the recess becomes 0.001 μm deeper or shallower, or its diameter increases by about 0.1 μm. Such changes are considered to be extremely fine. Although it tends to be, it is still a big change of “10% change”.) That is, “Slight deformation of hologram relief surface shape” occurs. As a result, the sharpness of the relief hologram reproduced image is greatly affected, and the sharpness is lowered.

  In particular, when such deformation is unevenly distributed in the hologram recording area, it also causes deformation of the relief hologram reproduced image itself.

  Therefore, by conversely using this, by applying a pattern-like surface activation treatment to the interface between the relief hologram forming layer and the peelable adhesive layer, the relief hologram is formed at the pattern-like surface activation treatment interface. “Partial adhesion between the forming layer and the peelable adhesive layer (meaning that the peel strength of this interface region is much higher than the peel strength of the interface region excluding the interface region),” Pattern sticking ”” occurs.

  When this relief hologram forming layer is peeled off from the interface with the peelable adhesive layer, a part of the surface of the peelable adhesive layer is broken and adhered onto the hologram relief surface of the relief hologram forming layer after peeling. However, the hologram relief surface is covered with “the pattern shape”, and the relief hologram reproduced image reproduced by the hologram relief can no longer be visually recognized from the “pattern shape” region, as if the relief It will be visually recognized as a display of “the pattern” in the hologram reproduction image.

  At this time, “Pattern-like surface activation treatment is applied to the“ interface ”between the relief hologram forming layer and the peelable adhesive layer” means that “after the relief hologram forming layer is formed,“ the surface ” In the case of forming a peelable adhesive layer on the surface of the relief hologram forming layer including “the surface” and “on the surface” after forming the peelable adhesive layer. In some cases, a pattern-like surface activation treatment is performed, and a relief hologram forming layer is formed on the surface of the peelable adhesive layer including “the surface”. As a result, “relief hologram formation” This means that a “patterned surface activation treatment is applied to the“ interface ”between the layer and the peelable adhesive layer”.

  Therefore, the “patterned surface activation treatment of“ the surface ”of any layer” is “partially fixed” at the interface between both layers, that is, “patterned surface activation”. It is a region where “sticking” occurs (“interface” portion) and is defined as “surface activation treatment interface” (region), and the other region (other “interface” portion) is “surface” It is defined as “interface (region) excluding the activation treatment interface”.

  In the scratch label of the present invention, a scratch masking layer, a relief hologram forming layer, and a peelable adhesive layer are formed in this order.

  Furthermore, it is comprised by what provided the tint block printing on the scratch concealment layer, and what provided the transparent base material between the scratch concealment layer and the relief hologram formation layer.

  As the ink composition for the scratch concealment layer, a rubber-based natural resin, a diene resin, an acrylic resin, or a vinyl resin is used as a resin component to obtain concealability and scratch properties. And a pigment component such as fine oxide powder of 20 to 80% of the total solid content is used. Moreover, in order to improve the concealment property of a scratch concealment layer, you may contain 1-10% of pigment components with strong concealment property, such as barium sulfate and calcium carbonate. By configuring the scratch concealing layer ink composition from the above composition, both printability and scratch properties can be satisfied.

  The scratch concealing layer is obtained by diluting this composition with an appropriate solvent and applying a printing method such as an offset printing method, a gravure printing method, a screen printing method, an intaglio printing method, an ink jet printing method on an appropriate peelable film. The thickness after use is 5 μm to 50 μm, and further 10 μm to 30 μm.

  If this thickness is less than 5 μm, there is a possibility that “secret information” can be seen through. If the thickness exceeds 50 μm, the total thickness of the scratch label becomes too large, and it is attached to a substrate such as a scratch card. In addition, the “protrusion” on the substrate is too large, which hinders handling such as stacking scratch cards. Furthermore, if the thickness is 10 μm or more, the concealment property of secret information is sufficient, and if it is 30 μm or less, the forming workability is excellent, and the protruding amount when 1000 scratch cards are stacked is within 3 cm, and automatic conveyance It is within the range that can be used for processing and the like. If the thickness of the scratch concealing layer is within this range, it can be easily pulverized with coins, fingers or nails.

  However, the exposed surface of the scratch concealing layer provided on the appropriate peelable film is an interface with the relief hologram forming layer, and the scratch concealing layer is partially applied after constituting the scratch label and adhering to the substrate. In the area where the scratch concealment layer is removed, the “secret information” is visually recognized through the interface in the area where the scratch concealment layer has been removed, and for the purpose of ensuring the visibility thereof, The exposed surface of the scratch masking layer is required to be a so-called “optical mirror surface”.

  When the interface between the scratch concealing layer and the relief hologram forming layer is not an “optical mirror surface” but a so-called “rough surface”, this “rough interface” is referred to as “secret information”. When the illumination light for visual recognition passes, the “light phase” is disturbed and further becomes “scattered light”. It looks like you are watching.

  Such “optical mirror surface” means that the smoothness of the surface of a certain “layer” is substantially 0.01 μm to 0.1 μm in terms of average surface roughness Ra. In a three-dimensional curved surface such as a hologram relief surface, “optically mirrored” means that the curved surface is a “smooth surface” that does not have irregular irregularities that deviate from the desired curved surface. In other words, the value of the average surface roughness Ra in the microscopic area of the three-dimensional curved surface that can be approximated to a plane is approximately microscopic. Also in the region, it can be defined as “0.01 μm to 0.1 μm”.

Usually, when the scratch concealment layer is formed by using the printing method as described above, the surface thereof has a “roughness” of about 1.0 μm to 30.0 μm or more in some cases, and the “roughness” It is easy to grind with coins, fingers or nails, and is desirable in terms of scratch-off suitability. (Scratch-off means that the scratch concealment layer is partially removed by scratching with coins or claws.)
However, the surface opposite to the surface in contact with the relief hologram forming layer of the scratch concealment layer (the outermost surface as the scratch label) is exactly the surface that scratches and preferably has such roughness. The opposite surface, that is, the surface in contact with the relief hologram forming layer of the scratch concealing layer needs to be an “optical mirror surface” as described above for the purpose of the present invention. For this reason, after forming a scratch concealment layer on an appropriate peelable film, it has a smooth surface equal to or higher than the above-mentioned “optical mirror surface”, using a “metal plate subjected to a surface smoothing treatment” or the like, Using a flat plate press treatment that heats at 100 to 200 ° C. and pressurizes at 10 ⁷ to 10 ⁹ Pa, or “a metal roll that has been subjected to a surface smoothing treatment”, etc. The surface in contact with the relief hologram forming layer of the scratch concealing layer is defined as an “optical mirror surface” by roll press treatment applying a linear pressure of 0 kg or more.

  Alternatively, not only the printing method described above but also a roll coating method or a resist processing method is suitable for this purpose.

  Furthermore, a film having a very high specularity with an average surface roughness Ra of 0.01 μm or less is prepared in advance as a transfer substrate, and a scratch concealment layer is temporarily formed on the film, and the scratch concealment layer is prepared. The surface in contact with this film is referred to as an “optical mirror surface”, and the temporarily formed scratch concealing layer is transferred onto the appropriate peelable film described above, and an exposed surface is formed on the appropriate peelable film. A scratch masking layer that has become an “optical mirror surface” can be provided. In this method (transfer method), at the stage of drying and further curing the scratch masking layer, movement of the pigment component in the scratch masking layer ink composition used for the scratch masking layer and transfer of the resin component occur, It is preferable because an “optical mirror surface” can be obtained relatively easily and the surface can be used as an interface with the relief hologram forming layer of the scratch concealing layer as it is.

  However, the scratch concealing layer and the relief hologram forming layer are purposely made to make it easier to conceal the existence of the hologram relief surface, which is the interface between the relief hologram forming layer and the peelable adhesive layer, when the scratch concealing layer is scratched off. The interface with is not an “optical mirror surface” as described above, but is only a “rough surface that disturbs the phase of the light” of the illumination light that reaches the interface after ensuring the visibility of “secret information”. This is also suitable depending on the application and purpose of the scratch label of the present invention (meaning that the confidentiality of the interface is particularly required).

Various thermoplastic resins, thermosetting resins, or ionizing radiation curable resins can be used as the transparent resin layer for constituting the relief hologram forming layer on the scratch concealing layer. (Ionizing radiation means electron beams and ultraviolet rays.)
The relief hologram forming layer uses a solvent that does not dissolve the scratch concealment layer, printing method such as offset printing method, gravure printing method, screen printing method, intaglio printing method, inkjet printing method, spin coating method, curtain coating method, Using a forming means such as a photoresist processing method, the thickness after drying is 1.0 μm to 50 μm, and further, a thickness of 3.0 μm to 20 μm.

  If this thickness is less than 1.0 μm, it is difficult to form a relief hologram. If the thickness exceeds 50 μm, the total thickness of the scratch label is too large, and is stuck on a substrate such as a scratch card. If this happens, handling such as scratch cards will be hindered.

  Then, on the exposed surface of the relief hologram forming layer (meaning the surface opposite to the surface of the relief hologram forming layer that is in contact with the scratch concealing layer), the previously prepared diffraction grating and interference fringes are uneven. An original recorded in a form (meaning an original having a predetermined hologram relief surface) is pressed as a replication-type press die (also called a stamper), and both are heated by an appropriate means such as a heating roll. By press-bonding, the concavo-convex pattern of the original can be replicated on the relief hologram forming layer. At this time, the relief hologram pattern to be formed may be a single relief hologram pattern or an aggregate of a plurality of relief hologram patterns.

  Alternatively, an ionizing radiation curable resin is filled between the uneven surface of the original plate and the scratch concealing layer, the resin is cured with ionizing radiation, and then the original plate is peeled off, thereby the scratch concealing layer. A relief hologram forming layer having a more precise hologram relief surface can be formed thereon.

  As the hologram relief formed on the relief hologram forming layer, that is, the “hologram”, various “holograms” such as rainbow holograms that can be formed as “relief holograms” can be adopted. Only the issuer of the scratch label of the invention understands “the overall design configuration” (meaning the type of design applied to each type of scratch label), and the authorized purchaser receives the scratch label of the present invention. When distributing, announce the hologram design applied to the scratch label, and when the authorized buyer confirms the “secret information”, whether or not it has the specified hologram design It is also preferable to be able to determine the anti-counterfeiting property.

  2. A part of the hologram relief surface of the relief hologram forming layer is surface-activated in a “pattern shape” to improve the adhesiveness with the peelable adhesive layer formed thereon, and 0.5 kg / 25 mm width or more; The surface activation treatment interface in the interface between the relief hologram forming layer and the peelable adhesive layer with an adhesive strength of 0 kg / 25 mm width or less (also referred to as peel strength, in a 180 ° peel test specified in JIS Z0237). Can be used as long as the desired pattern shape (characters, figures, symbols, etc. is visible). Typically, characters such as “open” are used to indicate evidence that the label has been peeled off. The character portion “open” is activated for display.) The part (part of the interface) where the adhesive strength is partially increased becomes a “patterned surface activation treatment interface”. This portion is also referred to as a “patterned surface activation treatment interface” region.

  Since this part (this region) of the interface between the relief hologram forming layer and the peelable adhesive layer is in a state where both layers are fixed, the scratch concealment layer and the relief hologram forming layer are scraped off by “scratch-off”. In this case, interface peeling does not occur at the interface, and the relief hologram forming layer remains partially fixed on the peelable adhesive layer. Of course, in the portion other than this portion (region other than this region) at the interface between the relief hologram forming layer and the peelable adhesive layer, interface peeling easily occurs at the interface, and the surface of the peelable adhesive layer becomes It will be exposed.

  That is, this portion (this region) of the interface between the relief hologram forming layer and the peelable adhesive layer is the “patterned surface activation treatment interface” (region), and the relief hologram forming layer and the peelable adhesive layer The part other than this part (the area other than this area) of the interface of “1” means “the interface (area) excluding the“ patterned surface activation treatment interface ”(area) at the interface between both layers”.

  This “interface other than the“ patterned surface activation treatment interface ”” is an “interface” that has not been subjected to “surface activation treatment”, and in this “interface that has not been subjected to“ surface activation treatment ”” The adhesion between the relief hologram forming layer and the peelable adhesive layer maintains a very small value of 0.0001 to 0.2 kg / 25 mm width.

  Here, in order to “perform an interface between the relief hologram forming layer and the peelable pressure-sensitive adhesive layer so that the interface includes a“ patterned surface activation interface ”” As described above, “A part of the hologram relief surface of the relief hologram forming layer is surface-activated in a“ pattern shape ”to improve the adhesion with the peelable adhesive layer formed on the surface, and the interface between both layers May include a “patterned surface activation treatment interface” or “a part of the surface of the peelable adhesive layer may be activated in a“ pattern ”and laminated thereon. Needless to say, the adhesiveness to the relief hologram forming layer may be improved so that the interface between the two layers includes a “patterned surface activation treatment interface”.

  For this surface activation treatment, that is, treatment that greatly enhances wettability, treatment that creates functional groups on the surface, etc., light treatment such as laser irradiation, excimer light irradiation, oxygen-sensitized excimer light irradiation, (open) plasma treatment , Physical treatment such as corona treatment, electron beam irradiation treatment, surface treatment with chemicals such as oxidants, chemical treatment such as primer treatment, silane coupling treatment, physical treatment such as argon beam etching, etchant, and sandblasting There are various surface formation processes.

  When the relief hologram forming layer is peeled off to remove the scratch label, the part that has not been activated is easily peeled off between the relief hologram forming layer and the peelable adhesive layer, leaving the remaining activity. Only the characterized surface portion, that is, for example, the character portion of “open” is peeled off with the surface of the peelable adhesive layer attached to the relief hologram forming layer side, or the relief hologram forming layer is placed on the peelable adhesive layer side. When the surface of the peelable adhesive layer is peeled off, the exposed surface of the peelable adhesive layer becomes a “partially rough surface” and partially exhibits light scattering properties. On the hologram relief surface, the letters “open” appear to float.

  In this case, the relief hologram reproduction image is observed as being blocked by the characters “open”. Further, since the region of the non-activated portion is larger than the region of the activated portion, it has an effect of promoting separation at this interface.

  Since the hologram reproduction image has very high redundancy, this blockage (meaning the width of the activated region, for example, the line width of the letter “open”) is 0.5 μm to the period of interference fringes of the hologram relief. It is 200 times to 5000 times 2 μm, more preferably 500 times to 2000 times.

  If this blockage is less than 200 times, the hologram reproduction image is strongly reproduced due to hologram redundancy and the blockage is weakened. If this blockage exceeds 5000 times, the relief hologram forming layer becomes difficult to peel off or scratch labels The entire surface can be peeled off, or the rough surface portion expands when peeling (the phenomenon that the rough surface portion and the rough surface portion are connected, etc.) occurs, and it becomes difficult to obtain a clear cut. To do.

  The sharpness of blocking (characters, etc.) when the relief hologram forming layer is peeled is best at 500 to 2000 times the period of interference fringes of the hologram relief.

  On the other hand, the non-activated surface has a peel strength of 0.0001 kg / 25 mm width or more and 0.2 kg / 25 mm width or less. It is assumed that the relief hologram forming layer is peeled off, and when the relief hologram forming layer is peeled off, the outermost surface of the peelable adhesive layer becomes almost a mirror surface (a state of “interface other than the activation treatment interface”). Can visually recognize the relief hologram reproduction image.

  In addition, the hologram relief surface on the lower surface of the relief hologram forming layer that has been peeled off is substantially mirror-like in the state of the “interface other than the activation treatment interface”, and a clear relief hologram reproduction image can also be visually recognized from this surface. be able to.

  In addition, a method of directly performing an interface activation process such as a corona process on the relief hologram forming layer in a pattern form through a shielding mask or the like can also be used. However, according to this method, the gap between the shielding mask and the relief hologram forming layer, the diffusion of the processing gas, and the like, the interface between the activated portion and the non-activated portion is unclear (notched or partially And the boundary of the activated region on the surface of the relief hologram forming layer tends to be unclear.

  Such a “rough surface” generated in the “surface activation treatment interface” region peels off the outermost surface of the relief hologram forming layer or the outermost surface of the peelable adhesive layer (the hologram forming layer or the peelable adhesive layer). If this “active-inactive” interface is not a straight line, the destruction area will be easily expanded to unnecessary parts and the message itself will be unclear. . This is prominent when the message includes fine lines, fine characters, and the like.

  Other activation treatments can form a very clear pattern, and the difference in adhesion strength between the activation treatment surface and the other surfaces can be greatly increased, so that the fracture region is clearer. Can be.

  Of course, the pattern processing using these activation processes is optically transparent, and when the scratch label is observed, the pattern boundary cannot be visually recognized. Maintains the sexuality (its continuity).

  Among surface activation treatments, light treatment such as laser irradiation or physical treatment such as plasma treatment is particularly desirable because the treatment surface of the relief hologram forming layer is not uneven and maintains a mirror surface. Moreover, it is excellent in optical transparency.

  Furthermore, instead of uniformly activating the above-mentioned “pattern”, the “pattern” can be more finely patterned, for example, a fine pattern such as a dot pattern, a checkered pattern, or a random pattern. By activating only the region (for example, by activating it in the form of a halftone dot, the part other than the halftone dot in the “pattern” remains as an unactivated surface). As a “consisting of a set of simple patterns”, the “roughened” state when the relief hologram forming layer is peeled can be made more complicated, and the light scattering property can be improved.

  Considering the purpose of blocking the redundancy of the hologram, it is desirable to provide the “pattern” uniformly, but another feature at the time of reproducing the hologram image is “a fine light diffractive band having a width of 50 μm to 300 μm. When the hologram is cut, a pair of the light diffractive band and the hologram band forms a stripe (this is also an example of “consisting of a set of fine patterns”). In order to “block” the hologram reproduction using the phenomenon that “the effect of inhibiting the reproduction of the hologram image occurs due to the interference effect of the diffracted light”, the size of the “fine pattern” is 50 μm to 300 μm wide. In addition, it is desirable that the length is the same. In the case of the present invention, the portion corresponding to the fine light diffractive band is a light scattering band.

  For example, the size of the halftone dot diameter, the length of one side of a checkered square, and the width of each region of the random pattern are set as this size.

  When the relief hologram forming layer is peeled off, the mirror surface area and the “roughened surface” area are alternately formed in the above-described size, so that one mirror surface area and one “roughened surface” area adjacent to the mirror surface area are formed as described above. By forming the fine “stripe” and repeatedly presenting this streak, the reproduction of the relief hologram image is hindered, and it is visually recognized as a rainbow-colored region. Therefore, in this case, for example, a rainbow colored “open” character is observed.

  As the relief hologram forming layer, various thermoplastic resins, thermosetting resins, or ionizing radiation curable resins can be used as described below, but the method of the present invention is used as a film of the relief hologram forming layer. The effect is exhibited when an ionizing radiation curable resin such as ultraviolet curing or electron beam curing is used, which is very strong and very difficult to break the film itself.

  A peelable adhesive layer is provided so as to fill the hologram relief surface of the relief hologram forming layer and to enable interface peeling at the interface with the relief hologram forming layer.

  As the resin that can be used for the peelable adhesive layer, various thermoplastic resins, thermosetting resins, or ionizing radiation curable resins can be used, but the “wetting property of the peelable adhesive layer with respect to the relief hologram forming layer is The surface tension of the relief hologram forming layer is preferably set smaller than the surface tension of the peelable adhesive layer.

  However, if there is such a difference in surface tension, it becomes difficult for the peelable pressure-sensitive adhesive layer to fill the hologram relief surface with high accuracy. Therefore, after the peelable pressure-sensitive adhesive layer is formed, It is also preferable to increase the accuracy of transfer of the hologram relief shape to the peelable adhesive layer by applying a press or roll press.

  Furthermore, when the peelable adhesive layer is formed, a liquid excellent in fluidity and volatility, that is, a linear, branched or cyclic saturated hydrocarbon, a halide thereof, or a lower alcohol (both at room temperature) And having a boiling point of 30 to 100 ° C., a normal temperature vapor pressure of 10 kPa or more, particularly 50 kPa or more, and low resin solubility (specifically, pentane, dichloroethane, methanol) Is dripped onto the hologram relief surface in an extremely small amount (0.1 to 5.0 ml), and the fluidity of the liquid suppresses unnecessary friction at this interface, and the peelable adhesive layer entrains bubbles or causes unnecessary steps. In addition, during flat plate press and roll press processing, it is pushed out of the interface quickly and evaporated quickly. Without becoming a deformation factor of the ram relief surface, it is preferable to increase the shape-formable.

  In addition, a reactive resin such as a two-component curable type is used for the relief hologram forming layer, and an aging treatment of several days to several months at 30 ° C. to 80 ° C., as a corona treatment or an ionizing radiation curable type, The surface tension of the hologram relief surface is reduced by accelerating these reactions by applying additional ionizing radiation and bringing the degree of cure (particularly the degree of cure of the hologram relief surface of the relief hologram forming layer) closer to 100%. Can be made.

  Furthermore, the fluorination treatment and the fluorine ion implantation treatment on the hologram relief surface also have the effect of reducing the surface tension of the hologram relief surface while maintaining the “shape” of the hologram relief surface unchanged.

  Here, by making the surface tension of the peelable adhesive layer 1 mN / m larger than the surface tension of the hologram forming layer, “difficult to wet” occurs when the peelable adhesive layer is formed on the hologram forming layer. In addition, the resin used for the peelable adhesive layer and the resin used for the hologram forming layer are “miscible” and mixed to prevent deterioration of the hologram relief surface, that is, deformation of the fine relief shape of the hologram relief surface. .

  And the difficulty of wetting when forming the peelable adhesive layer on the hologram forming layer can be obtained by increasing the surface tension of the peelable adhesive layer even at 1 mN / m than the surface tension of the hologram forming layer. The difference is 10 mN / m or more, more preferably 20 mN / m or more. In addition, these wettability values can be actually measured by using a liquid mixture for wet tension test manufactured by Wako Pure Chemical Industries, Ltd.

  This “difficulty to wet”, that is, “ease of maintaining the shape of the hologram relief surface” increases when the difference in surface tension between the two layers is 10 mN / m or more, and becomes remarkable when the difference is 20 mN / m or more. . However, making the difference between the surface tensions of both layers more than 40 mN / m entails considerable difficulty in selecting the resin used for both layers. In addition, the greater the difference in surface tension between the two layers, the harder the wetting of the peelable adhesive layer resin provided on the hologram relief surface of the hologram forming layer. In a normal printing method, the hologram relief surface of the hologram forming layer On the contrary, the relief surface of the peelable pressure-sensitive adhesive layer (meaning that the surface is in contact with the hologram relief surface of the hologram forming layer) is "the hologram relief surface of the hologram forming layer" with high accuracy. It becomes obstructed to become the same.

For this reason, when forming the peelable adhesive layer or after the formation, a high linear pressure (roll press) from the exposed surface side of the peelable adhesive layer (meaning the surface opposite to the hologram relief surface of the peelable adhesive layer). 0.1 kg or more for a roll width of 1 cm. Furthermore, it means that the pressure is 1 kg or more.) Or high plain pressure (meaning flat pressure press. 10 ⁷ Pa or more, further 10 ⁸ Pa or more. It is necessary to devise so that the relief surface of the peelable adhesive layer coincides with the hologram relief surface of the hologram forming layer with high accuracy.

  And the greater the difference in surface tension between the hologram forming layer and the peelable adhesive layer, the easier the interface peeling at the interface between the two layers occurs. For example, from a scratch card with the scratch label of the present invention attached If you try to remove the scratch label improperly, apply deformation pressure to the scratch label, or let the solvent infiltrate in order to dissolve the adhesive on the label, partial peeling will start to occur all over the interface of both layers ( It means that voids are generated.), The part appears to be “white turbid” including air, and the hologram relief is very fine, and the peelable adhesive layer becomes a relief hologram forming layer. Since it is set so that it is difficult to get wet, it is no longer possible to return the peeled part to its original state even when high pressure is applied from the relief hologram forming layer side. Is shall.

  Specifically, it is preferable to use a silicon resin or a fluorine-containing resin itself having a releasability from the peelable adhesive layer and a low surface tension as the relief hologram forming layer.

Also, various thermoplastic resins or thermosetting resins mixed with silicon resin or fluorine-containing resin, and further silicon oil, or those resin and silicone resin or fluorine-containing resin copolymerized Alternatively, those in which a siloxane bond [—Si (R ₁ ) (R ₂ ) —O—] or a fluorine atom [—F] is introduced into the molecule of the resin can be used.

  As a peelable adhesive layer, the interface peel strength with respect to the relief hologram forming layer is small, and the peel strength with respect to the substrate or “secret information” is 1.0 to 3.0 kg / 25 mm width (180 according to JIS Z0237). Since the relief hologram forming layer itself has a high releasability, the material selection of the peelable adhesive layer is relatively easy.

  In addition, this is more preferable because it also leads to an improvement in the scratch suitability of the scratch concealing layer laminated on the relief hologram forming layer.

  Here, as the resin that can be used for the peelable adhesive layer, the interfacial peel strength with respect to the relief hologram forming layer is 0 among various thermoplastic resins, thermosetting resins, or ionizing radiation curable resins. .1 to 200 g / 25 mm width, in particular, 1.0 to 30 g / 25 mm width (according to JIS Z0237 compliant 180 ° peeling method) is used.

  If the interfacial peel strength is less than 0.1 g / 25 mm width, it will be inferior in processing suitability and handling suitability, and if it exceeds 200 g / 25 mm width, an attempt to peel off the interface and check the authenticity will be attempted. It will be difficult.

  In particular, the ink composition for the peelable pressure-sensitive adhesive layer uses a solvent-based or water-based solvent that hardly dissolves the relief hologram forming layer, and adversely affects the “optical mirror surface” property of the hologram relief of the relief hologram forming layer. Make it not exist.

  In order to further enhance the interfacial peelability of the peelable adhesive layer with the relief hologram forming layer, in the resin that can be used for the peelable adhesive layer, inorganic fine particles such as microsilica, fine particle resin powder such as silicon resin and fluororesin powder, etc. Further, a lubricant and extender pigment such as calcium carbonate, barium sulfate, talc and the like, and a release agent such as silicone oil can be added in an amount of 1.0 to 30.0% with respect to the resin component.

  However, in this case, the added inorganic fine particles and fine particle resin powder are concentrated on the interface side of the peelable adhesive layer with the relief hologram forming layer, and the local content ratio on the interface side is increased. In the vicinity of the base of the peelable adhesive layer and the surface to be attached with “secret information” on the opposite side, in order to keep the content ratio low, on the prepared release paper (label separator) The peelable adhesive layer in which these additives are uniformly dispersed is applied once, and the drying conditions and the like are adjusted (the release paper is heated to 50 to 100 ° C. while the drying conditions are mild, and then peeled off) By gradually drying from the surface in contact with the paper side to the exposed surface, etc.), these additives are lifted on the surface of the peelable adhesive layer, and at the same time the surface in contact with the release paper (Affix to the base material or “secret information” of the peelable adhesive layer. It requires devising such reducing the amount contained in the surface) near to. Thereby, the content ratio of the inorganic fine particles and the fine particle resin powder is 1.2 to 1.0 to the peelable adhesive layer “near the interface with the relief hologram forming layer” and “near the surface on the release paper side”. 2.0 to 1.0.

      That is, when the thickness of the peelable adhesive layer is 30 μm and the additive content ratio is 10.0%, the additive in the region from the interface with the relief hologram forming layer laminated thereon to the inside of 3 μm The content ratio is 12%, the additive content ratio in the region from the surface in contact with the release paper to the inside of 3 μm is 8%, and the ratio is 12: 8 = 1.5: 1.0. Means that.

  Of course, the additive is silicon oil (molecular weight: 300 to 50,000) such as dimethylpolysiloxane, methylphenylpolysiloxane, and modified products thereof, and the fluidity in the resin is high. It is also preferable to use a material that is easily moved from the inside of the resin to the resin surface by pressing (referred to as a bleed phenomenon).

  The peelable adhesive layer is formed with a thickness of 10 μm to 60 μm.

  When the thickness is less than 10 μm, the transfer of the hologram relief shape from the relief hologram forming layer becomes insufficient, and it becomes difficult to maintain the transferred hologram relief shape. The total thickness of the film becomes too large, and when it is stuck on a base material such as a scratch card, the handling of stacking the scratch card or the like is hindered.

  In addition, the hologram relief surface, which is the interface between the peelable adhesive layer and the relief hologram forming layer, is for an authorized purchaser or the administrator of the scratch label of the present invention to confirm the validity of the scratch label. Since it is not desirable for an unauthorized person who discovered the existence to accidentally “mold” the hologram relief surface and divert it to a counterfeit product, etc., the relief hologram reproduced from the hologram relief surface After confirming the reconstructed image, as described above, in the “surface activation treatment interface” region, an unpredictable “layer breakage and adhesion of the broken portion to other layers, that is, the“ rough surface of both layers ” The generation of "" and making the repair virtually impossible is greatly useful for improving its anti-counterfeiting property.

  Furthermore, a peelable adhesive layer is provided on an appropriate “release paper for labels”, a hologram relief is formed on the surface, and a relief hologram forming layer and a scratch concealing layer are overlaid so as to fill the hologram relief. The procedure of peeling the “label release paper” to make the scratch label of the present invention can also be used. In this procedure, the above-mentioned “surface activity” is applied to the surface of the peelable adhesive layer. The treatment region can be similarly applied using the same means, and in this procedure, the treatment region becomes the “surface activation treatment interface” region.

  Further, in the structure of the scratch label of the present invention, the interface between the relief hologram forming layer and the peelable adhesive layer is the hologram relief surface of the relief hologram forming layer. The refractive index of the adhesive adhesive layer is substantially the same as the refractive index of the relief hologram forming layer, that is, the refractive index of the peelable adhesive layer and the refractive index of the relief hologram forming layer are the same, or the difference in refractive index is The intensity of reflected light at the interface between the two layers, that is, the hologram relief surface is minimized to suppress the expression of a relief hologram reproduction image by the relief hologram forming layer reproduced by the reflected light.

  By doing so, the interface between the two layers can be made “not optically present”, and unnecessary reflection and refraction from the interface can be eliminated, and the scratch concealment layer of the scratch label of the present invention can be scratched. When turned off, no relief hologram reproduction image is generated from the scratched portion, and the relief hologram reproduction image cannot be visually recognized. That is, at this stage, it is possible to make it seem that the hologram is not included in the scratch label of the present invention.

  In particular, by making the difference in refractive index between the two layers 0.05 or less for any wavelength of visible light (400 nm to 800 nm), it can be used in outdoor sunlight or a strong halogen lamp. Therefore, it is possible to secure the secrecy of the irradiation.

  When this refractive index difference exceeds 0.1, the intensity of the reflected light increases, and even under ordinary illumination light such as an indoor fluorescent lamp, the presence of the interface is easily noticed, that is, Then, the relief hologram reproduction image appears, and the relief hologram reproduction image can be visually recognized, and the presence thereof is exposed.

  Further, the peelable adhesive layer has a hologram relief surface on the exposed surface after the relief hologram forming layer is peeled off for the purpose of confirming the existence of the hologram relief surface. For example, whether or not this surface is an “optical mirror surface”), and has a great influence on the reproduction of the relief hologram reproduction image, that is, the exposed surface of the relief hologram reproduction image It is a “reflecting surface” that affects the sharpness.

  The intensity of reflected light on the exposed surface of the peelable adhesive layer is determined by the upper and lower “layers” at which the exposed surface serves as an interface, that is, “layer above this interface = air (refractive index n = 1.0)” Therefore, the refractive index of the peelable adhesive layer is preferably larger than 1.0 because it is proportional to the square of the refractive index difference between “the layer under this interface = peelable adhesive layer”.

    For this purpose, the peelable adhesive layer is composed of a “high refractive index transparent resin layer”, that is, a transparent resin layer that exhibits a high refractive index of 1.7 or more while ensuring “transparency”. Thus, the refractive index difference with air can be made 0.7 or more, the above reflected light intensity is made very large, a clearer relief hologram reproduction image appears, and the “secret” behind it "Information" can also be clearly seen.

  Research on “higher refraction while maintaining the optical transparency of the resin material” has been conducted earnestly, but it does not adversely affect the observation of the hologram reproduction image (“optically transparent”). ), Through the peelable adhesive layer, while maintaining “transparency” that allows the “secret information” underneath it to be sufficiently and reliably visible, while maintaining the “refractive index as a << resin layer”. There is a limit to increasing it, and in the polymer structure of a resin with a relatively high refractive index, a “sulfur atom” with a high atomic refractive index, a “halogen component” such as a chlorine atom or a fluorine atom, Resin materials using a method of introducing an “aromatic ring group” having a high refractive index structure at the molecular level, or ultrafine particles of high refractive index metal oxide such as TiOx and ZrOx (average particle size: 0.0003 μm to 0.03 μm) A highly dispersed method, and further, a polymer material Although a material having a refractive index n = 1.9 was found by a method of incorporating a predetermined metal salt into the molecular structure of the material, it is still possible to use ZnS, which is an example of metal compound fine particles (or thin films). No “transparent” resin having a refractive index n = 2.3 has been found yet. Therefore, at present, by setting the refractive index of the peelable adhesive layer to 1.7 to 2.3, the refractive index difference with air is 0.7 to 1.3, particularly 1.0 to 1.3. can do.

  Of course, when the refractive index of the peelable adhesive layer is set to a high one, it is natural that the refractive index of the relief hologram forming layer is increased accordingly.

  However, since the peelable adhesive layer itself is behind the exposed surface (the “interface” or “reflecting surface”) as viewed from the observer side, the “reflected light” itself includes Does not have a direct effect (The properties inside the peelable adhesive layer do not directly affect the sharpness of the relief hologram reproduction image, and the properties of the outermost surface of the peelable adhesive layer have a direct effect. Although the size of the refractive index at the interface is important, the transparency inside the layer and the light scattering property inside the layer depend on the clarity of the relief hologram reconstructed image. Has almost no effect.

  Therefore, the peelable adhesive layer itself (inside the layer) can sacrifice “optical transparency” and “optical uniformity” (of course, “secret information” can be visually recognized). Transparency is necessary.), A transparent resin material having a relatively high refractive index, and a pigment having a high refractive index (a pigment having a refractive index of 2.0 or more, further 3.0 or more, etc.). If it exceeds 0.0, light scattering and light shielding properties are exhibited.) By mixing about 30 to 70%, transparency is somewhat sacrificed (meaning a decrease in transparency). A layer having a high refractive index can be pursued.

  However, even behind the reflective surface, if it is colored or becomes white and has a strong light scattering property, not only the visibility of "secret information" but also the clarity of the relief hologram reproduction image Consideration is necessary because it may have adverse effects.

  As the ink composition for the peelable adhesive layer, any of solvent-based and water-based adhesives can be used. For example, vinyl acetate resin, acrylic resin, vinyl acetate-acrylic copolymer, natural rubber, etc. Examples thereof include rubber resins. Further, in order to obtain a material configuration that is naturally friendly, it is particularly preferable to use a material made from a natural material such as latex mainly composed of natural rubber.

  However, when the “secret information” was provided on the substrate by the ink jet method, the height of the “secret information” printing part (meaning the swell of the printing part) increased to 5.0 μm to 20 μm. In this case, when the scratch label of the present invention is pasted on the “secret information”, the peelable adhesive layer is appropriately deformed so as to softly wrap the “high” printed portion. Therefore, it is essential that the rising pattern of the “secret information” printed part does not lead to the rising of the relief hologram forming layer and the scratch concealing layer. For this reason, the thickness of the peelable adhesive layer Is preferably 2.0 times to 5.0 times the rising height of the “secret information” provided by the inkjet method (meaning the distance from the base material surface of the printing unit to the surface of the printing unit). is there.

  If this thickness is less than 2.0 times the raised height, the absorbency becomes insufficient, and if it exceeds 5.0 times, it becomes an unnecessary thickness, and again the total thickness of the scratch label. Will be adversely affected.

  As a method for forming the peelable adhesive layer, it can be formed by applying and drying by a method such as gravure coating, roll coating or comma coating.

  The adhesive strength of the peelable adhesive layer to the substrate or the “secret information” forming part is at least 5 times greater than the interfacial peel strength between the relief hologram forming layer and the peelable adhesive layer, in particular, 10 times to The peel strength at the interface between the peelable adhesive layer and the “base material or“ secret information ”forming part” is 1.0 to 3 in the peel method at 180 ° according to JIS Z0237. It is desirable that the width be in the range of 0.0 kg / 25 mm. Of course, even higher peel strengths are suitable for the purposes of the present invention. In particular, the adhesive strength between the base material and the “secret information” forming portion on the base material is determined so that the peelable adhesive layer of the scratch label of the present invention forms the “secret information” on the base material and the base material. Although it is necessary to increase the peel strength between the layers to a level that makes it difficult to peel off from the portion, the peel strength between any layers is designed to be much greater than the interface peel strength between the relief hologram forming layer and the peelable adhesive layer.

  Thus, when the scratch label which consists of a scratch concealment layer, a relief hologram formation layer, and a peelable adhesive layer provided on an appropriate peelable film is peeled from the peelable film, the scratch label of the present invention is obtained.

  For the purpose described above, the surface of the peelable film may be set to a “rough surface” having an average surface roughness Ra of 1.0 μm to 30 μm, or a roughness higher than that. It can be made uniform and easy, and contributes to improvement of scratch-off appropriateness.

  Furthermore, the surface of the scratch concealment layer opposite to the surface on which the relief hologram forming layer is formed is printed with a background pattern, which not only improves anti-counterfeiting due to the presence of the “background pattern” but also illegally scratches. In doing so, the “background pattern” is also scraped off at the same time, thereby enhancing the effect of preventing forgery and alteration.

  This tint block printing is a light-colored pattern or coloring print that is the background of the main design pattern, and you can use a single color printing ink, but in order to improve anti-counterfeiting, It is also preferable to use the printing ink. For this multi-color tint block printing, offset printing or gravure printing is also used, but special printing methods such as Orlov printing and Simultan printing are also suitable because of their high anti-counterfeiting properties.

  Orlov printing is letterpress multicolor collective printing, in which each color ink transferred to a partial plate (pattern roller) corresponding to each color ink is gathered on an intermediate roller, and then the ink from the collective roller. The inks are simultaneously applied to two letterpress plates. There are two methods: printing directly from the letterpress surface (Orlov printing) and printing after transferring ink to a rubber cylinder (blanket cylinder) (offset zummel). Although there is only one printing plate, the color can be changed to some color from the middle of one drawing line.

  Simultan printing is a method in which a plurality of printing plates (lithographic printing plates, resin printing plates, or relief printing plates such as metal printing plates) are arranged around a single rubber cylinder (bran cylinder), and ink from each printing plate is collected on the rubber cylinder. Then print. The printing position accuracy is almost determined by the mounting accuracy of the plate surface to the plate cylinder, and since there is little influence of expansion and contraction of the base material, high registration can be stably achieved.

  The design for this background pattern printing is a figure that is used for decorative effects, such as "patterns" that are repeated regularly, "patterns" that include patterns with a crest, and other "patterns" that are used for dyeing and weaving. Designs repeated as “can be used.

  In particular, for the purpose of easily destroying the design due to scratches, it is also preferable to make the width of the image line very narrow and make it a “thin line” or “fine pattern” of about 30 to 100 μm. It is.

  The formation thickness of the “background pattern” in the background pattern printing is set to 1.0 to 10.0 μm.

  However, since the surface of the scratch concealment layer is a “rough” surface, the tint block printing can be performed using an ink jet method capable of printing following the unevenness, a thermal transfer method that is not easily affected by the unevenness, or a sublimation transfer method. You may go. Furthermore, it is also preferable to use such a transfer method to perform printing only on the concave and convex portions of the scratch concealment layer so that the tint block printing can be destroyed very easily due to unauthorized scratches.

  In particular, the sublimation transfer method is preferable because it penetrates only into the resin layer constituting the scratch concealment layer to create a unique texture and it is difficult to counterfeit the same.

  In addition, when this copy-forgery-inhibited pattern printing is provided between the scratch concealing layer and the relief hologram forming layer, and the design and formation position are the same above and below the scratch concealing layer, the scratch concealing layer is scraped. In addition, making the tint block design visible as a continuous design is also preferable in order to enhance its unexpectedness and anti-counterfeiting.

  When the scratch concealing layer of the scratch label of the present invention contains both a pigment having an average particle diameter of 1.0 μm to 10 μm and a fine pigment having an average particle diameter of 0.01 μm to 0.1 μm, the scratch label When it is attempted to illegally peel off, it becomes possible to leave a peeling mark on the scratch concealment layer, and to significantly improve the anti-counterfeiting property.

  Of course, when a person who wants to determine authenticity dares to peel off at the interface between the relief hologram forming layer and the peelable adhesive layer, this "peeling mark" occurs. This “occurrence of peeling marks” can also be one of the authenticity determinations, which is preferable.

  As described above, the pigment component included in the ink composition for the scratch concealing layer is 20 pigment components such as metal fine powder and oxide fine powder thereof (of course, nitride or other compound fine powder may be used). A pigment group containing ˜80% is used, but as this pigment component, a pigment group having an average particle size of 1.0 μm to 10 μm and a relatively large particle size (“group” means that a plurality of pigments are mixed). ) And a fine particle pigment group having an average particle size of 0.01 μm to 0.1 μm, and by using these mixed systems, the fine particle pigment group enters a gap between the large particle size pigment group, and a scratch concealing layer When subjected to extreme deformation, the fine pigment group acts as a slipping agent between pigments having a large particle size, making the movement of the pigment having a large particle size easy and irreversible (causing plastic deformation) This I mean.). Furthermore, in order to promote this “slip” effect, it is also preferable to add 1% to 5% of a slipperiness imparting agent such as silicon oil or talc.

  When trying to peel off the scratch label illegally, the scratch label or the “lamination part of the scratch concealment layer and the relief hologram forming layer” that caused the interface peeling is subjected to “bending deformation” of 90 to 180 degrees, The scratch concealment layer is also subjected to the same deformation, and one surface of the scratch concealment layer is fixed to the relief hologram forming layer and is difficult to cause displacement deformation. The deformation pressure is concentrated and the above plastic deformation is increased to cause irregular irregularities and irregular tears on the other surface of the scratch concealment layer, and the irregular irregularities and irregular tears are generated. , It will be visually recognized as a “peel mark”.

  In order to generate such “peeling marks” more reliably, the ratio of the pigment group having a large particle diameter to the fine particle pigment group is set to 10: 1 to 10:30, particularly 10: 5 to 10:10. It is preferable that

  If the ratio of the fine particle pigment group is less than 1 with respect to the pigment group 10 having a large particle diameter, it becomes difficult for “scratch marks” to occur in the scratch concealment layer. “Peeling marks” are less likely to occur.

  Furthermore, the use of a fragile resin that is prone to cohesive failure as the resin used in the ink composition for the scratch concealment layer also ensures the generation of this “peeling mark”. This means that the scratch concealment layer is partially removed by scratching with coins or claws.

  Furthermore, by providing a transparent substrate between the scratch concealing layer and the relief hologram forming layer, coins and nails can be prevented from scraping the surface of the relief hologram forming layer directly at the time of scratch-off, thereby forming a relief hologram. It is possible to prevent adverse effects on the “optical mirror surface” of the surface of the layer, and to remove the scratch concealment layer stably and surely without residue (meaning uncut residue). Can be.

  In particular, it is preferable to use a transparent substrate that has high scratch resistance and is not easily deformed by pressing with a nail or the like. For example, a material having a strong surface strength such as a three-dimensional crosslinked film, or a fluororesin If a product having such a releasability and slipping nails or the like is used, a scratch label excellent in these effects can be obtained.

  As the transparent substrate used for the scratch label of the present invention, in addition to the above-mentioned properties, it is possible to reduce the thickness and to have mechanical strength, solvent resistance and heat resistance. Furthermore, as long as it has transparency, it is not particularly limited, but a film-like or sheet-like plastic is preferable.

  For example, various plastic films such as polyethylene terephthalate (PET), polycarbonate, polyvinyl alcohol, polysulfone, polyethylene, polypropylene, polystyrene, polyarylate, triacetyl cellulose (TAC), diacetyl cellulose, and polyethylene / vinyl alcohol can be exemplified. .

  In particular, a plastic film mixed with fluorine-based resin powder, silicon-based resin powder, or the like is preferable because of extremely high scratch resistance.

  Although the thickness of a transparent base material is 2.0-50 micrometers, it is desirable to set it as 3.0-20.0 micrometers from the processing appropriateness as a scratch label, and handling appropriateness.

  If the thickness is less than 2.0 μm, the processing concealment when providing a scratch concealing layer or a relief hologram forming layer on the transparent substrate is inferior, and this thickness is 50 If the thickness exceeds 0.0 μm, the total thickness of the scratch label becomes too large, which is not preferable.

  In the case of providing a transparent substrate, in the above-described scratch label production procedure, an appropriate peelable film is not used, a scratch concealment layer is provided on one surface of the transparent substrate, and the other surface of the transparent substrate is provided. By providing the relief hologram forming layer and the peelable adhesive layer in this order, the scratch label of the present invention can be obtained without using an appropriate peelable film.

  Alternatively, a relief hologram forming layer and a peelable adhesive layer are provided in this order on one surface of the transparent substrate, and an appropriate release paper (meaning a separator for an adhesive label) is attached to the peelable adhesive layer. After that, a scratch concealing layer may be provided on the other surface of the transparent substrate to form the scratch label of the present invention.

  By using these procedures, the scratch concealment layer and the relief hologram forming layer are physically and chemically stable on a “film” called “transparent substrate” and also have a high surface smoothness. In addition, since it can be provided using separate steps, it can be formed more stably and more precisely.

  Further, the relief hologram forming layer itself is made of an ionizing radiation curable resin or a thermosetting resin, and in order to locally increase the strength of the hologram relief surface of the relief hologram forming layer, the peeling property can be removed while pressing the original plate. A method of heating the original plate to 100 to 200 ° C. while applying pressure from the film side is also suitable.

  Moreover, it is also suitable to use what is excellent in solvent resistance and heat resistance, such as a three-dimensional bridge | crosslinking type melamine resin, as a transparent resin layer to be used.

  Further, the two-layer structure of the scratch concealing layer and the relief hologram forming layer is combined with one layer, that is, the function of the scratch concealing layer and the function of the relief hologram forming layer. It is also preferable that the forgery is suppressed by making the realization more difficult, and the manufacturing process is simplified.

  In this case, the scratch label of the present invention is “a scratch label that conceals confidential information provided on a substrate, and a new scratch concealment layer and a peelable adhesive layer are configured in this order, The interface between the new scratch concealment layer and the peelable adhesive layer forms a hologram relief surface, and the new scratch concealment layer is removed by scratching, or the new scratch concealment layer is By peeling from the interface with the peelable adhesive layer, the secret information and the relief hologram reproduced image reproduced from the hologram relief surface can be visually recognized.

In order to achieve this configuration, after forming a new scratch concealing layer on an appropriate peelable film, the “surface-smoothed metal” has a smooth surface equal to or greater than the “optical mirror surface” described above. Roll using flat plate press treatment for heating at 100 to 200 ° C. and pressurizing at 10 ⁷ to 10 ⁹ Pa using “plate” or the like, or “metal roll subjected to surface smoothing treatment” Prepare a new scratch concealment layer exposed surface by “rolling press” by applying a linear pressure of 1.0 kg or more to a width of 1 cm. The master plate (meaning the master plate having a predetermined hologram relief surface) in which the diffraction grating and the interference fringes are recorded in a concavo-convex shape is pressed as a press mold (also referred to as a stamper) of a replication method, and by appropriate means, Heat both By crimping it can replicate the uneven pattern of the original plate to a new scratch concealing layer.

  Since the replication method is higher in temperature and higher than the replication conditions for the relief hologram forming layer, the pressure method to the original cylinder is not a flat plate type, but a rotary type, and a linear pressure of 1000 kg / m to 100,000 kg / m, Preferably, a pressure of 50000 kg / m or more is applied, and the original plate surface temperature is set to a high temperature of 150 ° C. to 250 ° C. If the diameter of the duplication cylinder is small, the reproducibility of the relief is lowered. Therefore, it is preferable that the duplication cylinder diameter is large. 0.5 m / min to 5 m / min.

  As a material used for this new scratch concealing layer, the above-described ink composition for the scratch concealing layer can be used as appropriate, and among them, a release agent such as silicone oil described above is used in the ink composition. It is also preferable to add 1.0 to 30.0% as a “lubricant” and enhance the “hologram relief formability” of the new scratch concealment layer by its lubricating performance.

  The “surface activation treatment” described above is also applied to the surface of the “new scratch masking layer”.

  In addition, it is also possible to include the above-mentioned “pigment having an average particle diameter of 1.0 μm to 10 μm and fine particle pigment having an average particle diameter of 0.01 μm to 0.1 μm” in a new scratch concealing layer. It is preferable because it enhances the property.

  The peelable adhesive layer side of the scratch label of the present invention thus obtained is in contact with the substrate surface of the scratch card and the “secret information” forming portion on the substrate, and the “secret” It was pressed so as to cover the “information” forming portion, and was pressed from above the scratch label by a rubber roller applied with a weight of 2 kg, and the scratch label of the present invention was adhered to a predetermined position of the substrate.

  In this state, the “secret information” covered by the scratch label could not be visually recognized, and it was impossible to imagine that a hologram was included in the scratch label. By scraping a part of the layer with a coin, only the “secret information” can be seen from the shaved area, and the relief hologram forming layer is peeled off from the interface with the peelable adhesive layer, thereby providing a clear image. A relief hologram reconstructed image appeared, and it was determined that the scratch label was authentic.

  Further, the scratch concealing layer of the present invention wherein the scratch concealing layer contains a pigment having an average particle size of 1.0 μm to 10 μm and a fine particle pigment having an average particle size of 0.01 μm to 0.1 μm, the base material and the base After sticking to the “secret information” forming part on the material, when part of the label is peeled off, the “peeling mark” is generated on the surface of the label due to the peeling action, and the label is peeled off without leaving a trace of peeling. Seemed difficult.

  According to the present invention, the hologram layer is provided behind the scratch concealment layer so that the existence of the hologram and the hologram design can be concealed to a third party, and the scratch concealment layer is scratched to provide “secret information”. Even if it is visible, the existence of the hologram is still concealed, and for the purpose of fraud or for the purpose of authenticity confirmation, if the remaining part is peeled off, a clear hologram reproduction image will appear, and the hologram will be displayed for the first time. Thus, it is possible to provide a scratch label having a high anti-counterfeiting property capable of confirming the presence of.

  And, by attaching the scratch label of the present invention to the base material so as to cover the “secret information” provided on the base material of the card or the like as described above, so-called “scratch card”, It becomes possible to use “a card or the like to which the scratch label of the present invention is attached”, that is, “a scratch card or the like in which secret information is concealed”.

  In addition, according to the present invention, since the hologram design is not disclosed to a third party or even a party in the scratch card or the like with the scratch label of the present invention attached, an unauthorized person can remove the scratch card or the like. Even if a large number is obtained, first of all, it does not notice the existence of the hologram, for example, even if the structure and the existence of the hologram can be known by some means, whether the hologram design is the only unified design, It is not possible to know if the design is arbitrarily arranged or if a specific hologram design is made to correspond to specific confidential information. It is virtually impossible to make a “counterfeit product” for a scratch card or the like having secret information.

  Furthermore, as the hologram layer has a high scratch resistance, it is possible to suppress the deterioration of the sharpness of the hologram reproduction image due to the scratch, and the layer exposed when the remaining part is peeled off as a high refractive index layer, The hologram reproduction image that appears will be made clearer, and a visible message such as “open” will be displayed as the peeled trace by the surface activation treatment of the peeling interface, In addition, by providing pigments with different average particle diameters in the scratch concealment layer, a scratch label that can significantly improve its anti-counterfeiting is provided as a structure that can leave the peeling marks when trying to peel off the label. can do.

  Accordingly, the present invention provides a scratch label for providing a new scratch card that is difficult to forge or alter, and proves that the card holder has a legitimate right in the tertiary industry. In addition to applications such as “scratch lottery”, labels that are useful not only for applications that play a role of so-called “keys” are provided in systems that provide expensive products and services.

It is sectional drawing of the scratch label H which shows one Example of this invention. It is sectional drawing of the scratch label H 'which shows the other Example of this invention. FIG. 3 is a view showing that the scratch label H according to one embodiment of the present invention is being peeled at the interface between the relief hologram forming layer 2 and the peelable adhesive layer 4 after being attached to the base material 8 of the scratch card 7. (The scratch card 7 and the “secret information” 9 on the base material 8 are omitted.) FIG. 3 is a view in which a scratch label H of the present invention is attached to a predetermined position of a base material 8 of a scratch card 7. Here, (a) is the figure which looked at the scratch card 7 from the top, (b) is the AA sectional drawing. A figure in which “secret information: 12345678” 8 is printed on the scratch card 7 (the frame surrounding “secret information” 9 is shown for convenience only.) FIG. 3 is a diagram in which a tint block print 10 is provided on the uppermost layer of the scratch label H of the present invention and is attached to a predetermined position of the base material 8 of the scratch card 7. (Only the copy-forgery-inhibited pattern printing 10 of the scratch label H of the present invention is highlighted and illustrated.)

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
(Scratch hiding layer, tint block printing, and transparent substrate)
As the ink composition used for the scratch concealment layer 1 of the scratch label H or H ′ of the present invention, a thermoplastic resin or a thermosetting resin can be used. Thermoplastic resins include cellulose derivatives such as ethyl cellulose, cellulose nitrate, ethyl hydroxyethyl cellulose, cellulose acetate propionate, and cellulose acetate, styrene resins such as polystyrene and poly-α-methylstyrene, styrene copolymer resins, and polymethacrylic acid. Methyl, polyethyl methacrylate, polyethyl acrylate, polybutyl acrylate, and other acrylic or methacrylic acid ester homopolymers or copolymers, polyvinyl chloride, polyvinyl acetate, vinyl chloride-vinyl acetate copolymer, polyvinyl Butylal resin, polybutadiene, styrene-butadiene copolymer, vinyl copolymer such as acrylonitrile-butadiene copolymer, rosin, rosin modified maleic acid resin, rosin ester resin such as polymerized rosin Coumarone resins, vinyltoluene resins, and polyamides, polyimides and the like. Further, a curing agent or the like may be mixed with these resins within a range satisfying the scratch-off property to prevent unnecessary peeling or peeling of the outermost surface of the scratch concealment layer 1 due to rubbing or the like. (See FIGS. 1 to 3)
Examples of the thermosetting resin include silicon resin, melamine resin, polyurethane, phenol resin, rosin-modified phenol resin, epoxy resin, unsaturated polyester resin, and the like. As a silicon resin and rubber-based natural resin, natural rubber, hydrochloric acid rubber, polyisoprene, polychloroprene, and the like can be used.

  Furthermore, it is also preferable to use a biodegradable plastic as the ink composition used for the scratch concealment layer 1 in consideration of the environmental influence in the act of scratching off.

  Biodegradable plastics include lactone resins such as ε-caprolactone, polybutylene succinate resins such as polybutylene succinate-adipate, and polylactic acid such as low molecular weight aliphatic dicarboxylic acids and low molecular weight aliphatics. Polyester resins synthesized from diol, mixtures of modified polyvinyl alcohol, aliphatic polyester resins and starches, etc., or polymers obtained by adding aliphatic isocyanates to low molecular weight aliphatic polyesters, are also natural products. Suitable are animal natural substances such as gelatin, plant natural substances such as cellulose, or microorganism-producing substances such as polyhydroxybutyrate.

  As the ink composition used for the scratch concealment layer 1, in order to impart concealability and scratch properties to the entire solid content containing these resin components, metal-based fine powder (aluminum powder, brass fine powder, copper fine powder) Powder, etc.), oxide fine powders thereof, fine nitride powders, and other compound fine powders containing 20 to 80% of pigment components are used.

  Further, in order to further improve the concealing property of the scratch concealing layer 1, 1 to 10% of a pigment component having a strong concealing property such as barium sulfate or calcium carbonate may be contained. By configuring the ink composition for scratch concealment layer 1 from the above composition, both printability and scratch properties can be satisfied.

The scratch concealment layer 1 is obtained by diluting the composition with an appropriate solvent, and then releasing an appropriate peelable film (the scratch label H or H ′ of the present invention is formed on the film and then peeled off from the film. Thus, the scratch label H or H ′ of the present invention can be obtained. This “appropriate release film” is not shown.) On the offset printing method, gravure printing method, screen printing method, intaglio Using a printing method such as a printing method or an inkjet printing method, the thickness after drying is 5 μm to 50 μm, and further, a thickness of 10 μm to 30 μm. (See FIGS. 1 to 3)
Further, as the ink composition for the scratch concealment layer 1, a water paste ink in which a metal paste, a resin material and an auxiliary agent are dispersed in water and a lower alcohol can be used, and in particular, on the relief hologram forming layer 2 The procedure for providing the scratch concealment layer 1 is preferable because it does not give unnecessary deformation or alteration to the surface of the relief hologram forming layer 2.

  As the metal of the metal paste, bronze powder, which is an alloy of copper and zinc, or aluminum powder is used. Alternatively, an aluminum paste obtained by making aluminum fine powder and treating the surface with a fatty acid or the like into a paste with a hydrocarbon solvent having a high boiling point (mineral spirit or the like) may be used.

  In addition to the above, pigments for yellow, magenta, cyan, or black used for general printing inks, and extender pigments such as titanium white may be used as appropriate.

  As the resin material, polyurethane-based resin, polyacrylonitrile-based resin, polyacrylic acid-based resin, or the like can be used, and an aluminum paste or a color pigment is prepared by setting an emulsion of these resin materials to 25 to 50% of the ink composition. In addition, 10 to 35% of water and less than 5% of isopropyl alcohol are added and stirred to obtain an aqueous emulsion ink. An auxiliary agent such as an antifoaming agent, a surfactant, or a preservative can be added to this in an amount of 0.1 to 3%.

  For the formation of the scratch concealment layer 1 using this water-based emulsion ink composition, a gravure printing method, a screen printing method, a flexographic printing method for printing via an anilox roller, or the like can be applied as a suitable method for full surface printing or partial printing. .

  In addition, the ink composition for scratch concealment layer 1 is obtained by dissolving a fragile resin that easily cohesively breaks in the solvent in a solvent, and aluminum powder (silver), brass powder (gold), copper as a concealing pigment. Metal powder such as powder (red), or a mixture of white extender pigments such as talc or kaolin, or a mixture of a colored pigment or dye appropriately mixed with this can be used.

  As the resin that is easily cohesive failure, a blend resin obtained by blending different kinds of resins at an appropriate blending ratio can be used. For example, polyethylene, ethylene-vinyl acetate copolymer (EVA), polypropylene, polystyrene, styrene-based polymer, A blend resin in which any two or more of resins such as styrene-butadiene rubber, various waxes, rosin, terpene resins, and terpene polymers are blended in an appropriate ratio can be used.

  As a solvent for dissolving this resin, toluene, methyl ethyl ketone, methyl isobutyl ketone, xylene, cyclohexanol, isobutyl acetate, cyclohexane, methylcyclohexanone, glycol derivatives such as ethylene glycol monobutyl ether, or a mixed solvent thereof can be used.

  As pigments used in the ink composition for scratch concealment layer 1, organic pigments such as quinacridone red magenta, anthraquinone red yellow, polyazo yellow, benzimidazolone yellow orange and phthalocyanine pigment Copper phthalocyanine blue (α type, β type), copper phthalocyanine green, dissimilar metal phthalocyanine blue, selenium blue, azo pigments, soluble azo pigments (carmine 6B, permanent red 2B, etc.), insoluble azo pigments (disazo type, Monoazo, etc.), insoluble polycyclic pigments (red: quinacridone, perylene, diketopyrrolopyrrole, orange: perinone, perylene, diketopyrrolopyrrole, yellow: quinophthalone, isoindolinone, green: phthalocyanine, blue: phthalocyanine, in Dunslen , Purple: dioxazine, etc.), insoluble lake pigments (red: lake red C, watching red, etc.).

  Examples of inorganic pigments include complex oxide pigments, fine particle complex oxide pigments, bitumen, and hybrid pigments. In addition, petals, molybdenum red, cadmium red, red lead (and above, red), and yellow lead. (Red mouth), molybdenum orange (orange), cadmium orange (orange), ultramarine blue, Prussian blue, cobalt blue, cerulean, manganese blue (above, blue), amber (brown), yellow Lead, cadmium yellow, titanium yellow, yellow iron oxide (above, yellow), chromium oxide, cobalt green, viridian, peacock (above, green), Mars purple, cobalt violet, manganese violet (above, purple.), Etc. An extender pigment, a metal powder pigment, etc. are used.

  The particle diameter of these pigments is finished as a pigment group having an average particle diameter of 1.0 μm to 10 μm or a fine particle pigment group having an average particle diameter of 0.01 μm to 0.1 μm. In particular, the fine pigment group tends to agglomerate and needs to be redispersed.

  Before providing the scratch concealment layer 1 on an appropriate peelable film, the offset labeling, gravure printing, etc. can be used according to the design according to the use of the scratch label H or H ′ of the present invention. After applying the tint block printing 10 with a thickness of ˜10.0 μm, the scratch concealment layer 1 is provided so as to cover the tint block printing 10. , H ′ (not shown) can be obtained.

Of course, the tint block printing 10 may be provided on the scratch concealment layer 1 after the scratch label H or H ′ is formed by using the same printing method. (FIG. 6 is a view in which the scratch label H or H ′ of the present invention provided with the tint block printing 10 is stuck on the base material 8 of the scratch card 7).
Needless to say, the design can be improved by printing a normal design (main design pattern or the like) other than the tint block printing 10.

Also, without using the appropriate peelable film, a transparent substrate 6 having a thickness of 2.0 to 50.0 μm is used, and the surface of the transparent substrate 6 is scratched by using the printing method described above. After providing the concealing layer 1 and further providing the tint block printing 10 on the scratch concealing layer 1, the relief hologram forming layer 2 (and the hologram relief 3) and peeling are formed on the other surface of the transparent substrate 6. As a procedure for providing the adhesive layer 4, the scratch label H ′ of the present invention may be formed. (See Figure 2.)
Further, on the scratch concealment layer 1 or on the scratch concealment layer 1 and the tint block printing 10, a cellulose resin, a polyester resin, a vinyl resin, an epoxy resin, an acrylic resin, and a copolymer thereof. A protective layer of ionizing radiation curable resin or the like may be formed to a thickness of 1 to 3 μm by a heat-sensitive melt transfer method, a sublimation transfer method, or an ink jet method to further conceal the “secret information” 9. (Not shown)
Further, the two layers of the scratch concealing layer 1 and the relief hologram forming layer 2 are combined into one layer, that is, the function of the scratch concealing layer 1 and the function of the relief hologram forming layer 2 "relief hologram forming layer having scratch concealing properties". In other words, it is integrated as a “new scratch concealment layer”, and the hologram relief 3 (“hologram relief 3 of the scratch concealment layer” instead of “hologram relief 3 of the relief hologram formation layer”) is formed on one surface thereof. Can also be provided. (Not shown)
By forming the peelable adhesive layer 4 on the “hologram relief 3”, the scratch label of the present invention can be obtained. (This layer structure is not shown.)
In this configuration, the “new scratch masking layer” uses the ink composition for scratch masking layer 1, and after forming one surface as an “optical mirror surface”, the hologram relief 3 is formed on the relief hologram forming layer 2. By setting higher heating and higher pressure than the replication conditions to be performed, “the hologram relief 3” is formed.
(Relief hologram forming layer and hologram relief)
As a resin material used for the transparent resin layer for constituting the scratch hologram H or the relief hologram forming layer 2 of H ′ of the present invention, various thermoplastic resins, thermosetting resins, or ionizing radiation curable resins are used. Can be used. As the thermoplastic resin, acrylic ester resin, that is, polymethyl methacrylate (refractive index n = 1.49), polymethyl acrylate (n = 1.47), polybenzyl methacrylate (n = 1.57), polybutyl acrylate (N = 1.44), polyisobutyl acrylate (n = 1.48), etc. Cellulosic resins, ie, cellulose nitrate (n = 1.54), methylcellulose (n = 1.50), cellulose acetate propio Nates (n = 1.47), vinyl resins, ie, polyvinyl acetate (n = 1.47), polyvinyl chloride / vinyl acetate (n = 1.54), acrylamide resins (n = 1.50) ), Polystyrene resin (n = 1.60) or the like, and as the thermosetting resin, unsaturated polyester resin (n = 1. 4), acrylic urethane resin (n = 1.60), epoxy-modified acrylic resin (n = 1.55), melamine resin (n = 1.56), epoxy-modified unsaturated polyester resin (n = 1.64), Alkyd resin (n = 1.54), phenol resin (n = 1.60), silicon resin (n = 1.41-1.60), or fluorinated resin (n = 1.35-1.38) Etc. (See FIGS. 1 to 3)
These thermoplastic resins and thermosetting resins can be used alone or in combination of two or more. One or more of these resins may be cross-linked using various isocyanate resins, or various curing catalysts, for example, metal soap such as cobalt naphthenate or zinc naphthenate may be blended. Or peroxide such as benzoyl peroxide and methyl ethyl ketone peroxide for initiating polymerization with heat or ultraviolet light, benzophenone, acetophenone, anthraquinone, naphthoquinone, azobisisobutyronitrile, or diphenyl sulfide good.

  Examples of the ionizing radiation curable resin include epoxy acrylate, urethane acrylate, acrylic-modified polyester, etc., for the purpose of introducing a crosslinked structure into such an ionizing radiation curable resin or adjusting the viscosity, A monofunctional monomer, a polyfunctional monomer, or an oligomer may be blended and used.

In addition, a mixture of the above thermoplastic resin or thermosetting resin with a silicon resin or a fluorine-containing resin, or a silicone oil, or a thermoplastic resin or a thermosetting resin and a silicon resin or a fluorine-containing resin. And those obtained by introducing a siloxane bond [—Si (R ₁ ) (R ₂ ) —O—] or a fluorine atom [—F] into the molecule of a thermoplastic resin or thermosetting resin. Can be used.
Furthermore, the above-described thermoplastic resin or thermosetting resin in which silicon powder fine particles or fluorine powder fine particles are dispersed may be used.

  Fluorinated resins include perfluorinated fluorocarbon resins, tetrafluorinated resins, partially fluorinated resins, trifluorinated resins, polyvinylidene fluoride, polyvinyl fluoride, and fluorinated resin copolymers. Tetrafluoroethylene / hexafluoropropylene copolymer, ethylene / tetrafluoroethylene copolymer, ethylene / chlorotrifluoroethylene copolymer and the like can be used.

Furthermore, in order to form the relief hologram forming layer 2 using the above resin material, the relief hologram forming layer 2 can be formed directly by performing interference exposure of the hologram on the photosensitive resin material and developing it. Using a hologram or a replica thereof, or a plating mold thereof as a replication mold, and pressing the mold surface against a transparent resin layer created by press molding, injection molding, blow molding, or the like, Forming is performed to form three hologram relief surfaces. (See FIGS. 1 to 3)
When thermosetting resin or ionizing radiation curable resin is used, curing is performed by heating or ionizing radiation irradiation while keeping the uncured resin in close contact with the mold surface, and then cured by peeling after curing. Fine relief of the relief hologram can be formed on one side of the transparent resin layer, and this relief relief becomes the hologram relief 3. Note that a diffraction grating forming layer having a diffraction grating formed into a pattern by a similar method can also be used as the light diffraction structure (that is, the hologram relief 3 of the relief hologram forming layer 2).

  The hologram is a recording of interference fringes due to the interference between the object beam and the reference beam in an uneven relief shape, for example, a laser reproduction hologram such as a Fresnel hologram, and a white light reproduction hologram such as a rainbow hologram, There are color holograms, computer generated holograms (CGH), holographic diffraction gratings, and the like using these principles. Further, like a machine readable hologram, the reproduction light may be converted into data by a light receiving unit and transmitted as predetermined information, or authenticity determination may be performed.

  Furthermore, in order to precisely create fine irregularities (that is, hologram relief 3), not only an optical method but also an electron beam drawing device is used to create a precisely designed relief structure, which is more precise and complicated. It is also possible to create a simple reproduction light. As the relief shape, the pitch or depth of the unevenness or a specific periodic shape is designed according to the light or the wavelength (range) of the light source, the reproducing direction and the intensity. The pitch (period) of the unevenness depends on the reproduction angle and is usually 0.1 μm to several μm, and the depth of the unevenness is a factor that greatly affects the reproduction strength, and is usually 0.1 μm to 2 μm.

  However, the relief structure produced by using an electron beam drawing apparatus, that is, the relief structure that becomes the hologram relief 3 by duplication, has a cross-sectional shape of “laminar shape” (like a wall with a cross-section standing up at a right angle). Therefore, when the peelable adhesive layer 4 is precisely embedded in the concave portion and then peeled with the hologram relief 3 surface as an interface, a part of the peelable adhesive layer 4 remains in the concave portion. (This means that the peelable adhesive layer 4 is coherently broken and remains as an adhesive residue.) When such a phenomenon occurs, the relief hologram reproduction image reproduced from the hologram relief 3 is remarkably unclear. It will be a thing.

  In order to avoid this problem, the developing process of the electron beam resist to be used is adjusted, or the electron beam at the time of electron beam drawing is not set to the two steps of [ON / OFF], [ON (100% intensity / ON (70% strength) / OFF] is made into three or more stages, so that the “wall” angle of the cross-sectional shape is changed from vertical (90-degree planar shape) to slope (60 to 80 degrees). When the peelable pressure-sensitive adhesive layer 4 is peeled from the concave portion, no adhesive residue is left in the concave portion.

  This is due to the principle of hologram recording / reproduction, in the case of a repetitive unevenness of the same shape, such as a single diffraction grating, the greater the adjacent unevenness, the greater the degree of interference of reflected light. The intensity increases, converges to the maximum value, minimizes blurring in the diffraction direction, and improves the accuracy of convergence to the focal point of an individual point of the image, such as a stereoscopic image, that converges to the focal point. However, if the reconstructed image becomes clear, and there are irregularities with a period or shape different from the irregularities of the hologram image on the relief surface, it becomes noise during reproduction of the hologram or diffraction grating, and the image is This is to cause blurring.

  The method of shaping (also called replicating) the hologram relief shape is as follows. A master plate on which diffraction gratings and interference fringes are recorded in a concavo-convex shape is used as a press mold (referred to as a stamper), and the master plate is placed on the relief hologram forming layer 2. The concavo-convex pattern of the original plate can be duplicated by heating and press-bonding them together by an appropriate means such as a heating roll. The hologram pattern to be formed may be single or plural.

  In order to accurately reproduce the above-mentioned extremely fine shape and to minimize distortion and deformation such as heat shrinkage after replication, the original plate is made of metal and is replicated at low temperature and high pressure.

  For the original plate, a metal having high hardness such as Ni is used. After a Cr or Ni thin film is formed on the surface of a glass master or the like formed by optical imaging or electron beam drawing by vacuum deposition or sputtering, 5 to 50 nm is formed, and then Ni is electrodeposited (electroplating, electroless) It can be made by peeling the metal after forming it to a thickness of 50 to 1000 μm by plating or further composite plating.

  In order to use it for high-pressure rotation type replication, it is necessary to increase the thickness accuracy of this Ni layer, and it is usually ± 10 μm, preferably ± 1 μm. For this reason, you may use the back surface grinding | polishing or the planarization method.

  Since the replication method is a high pressure, a rotary type is used instead of a flat plate type, and the linear pressure is set to 100 kg / m to 10,000 kg / m, preferably 5000 kg / m or more. If the diameter of the duplication cylinder is small, the reproducibility of the relief is lowered. Therefore, it is preferable that the duplication cylinder diameter is large. Usually, an arc having a diameter of 0.1 m to 2.0 m, preferably 1.0 m or more is used. To do.

  The relief hologram forming layer 2 is pressed along this duplication cylinder, and duplication is carried out at the above pressure by a metal cylinder from the back side. In order to minimize distortion and deformation such as heat shrinkage after replication, the entire relief hologram forming layer 2 is not heated, but only a portion of the relief hologram forming layer 2 on the hologram relief 3 surface side is heated. The method is desirable. Usually, it heats to 60 to 110 degreeC. Furthermore, the precision can be further improved by keeping the metal cylinder on the back surface at room temperature or cooling it.

(Surface activation treatment)
Predetermined at a predetermined position on the surface of the relief hologram forming layer 2 or on the hologram relief 3 of the relief hologram forming layer 2 or on the peelable adhesive layer 4 or on the surface of the peelable adhesive layer 4 on the hologram relief 3. A surface activation treatment is performed in a pattern to form a “surface activation treatment interface” (region) 5. (Refer to FIGS. 1 to 3. In the drawings, each is indicated by a dotted line region. In each figure, the relief hologram forming layer 2 and the peelable adhesive layer 4 are laminated via the hologram relief 3.)
To perform this surface activation treatment, carbon dioxide laser irradiation, far infrared carbon dioxide laser irradiation, 172 nm vacuum ultraviolet ray (VUV, excimer light) irradiation, oxygen sensitized excimer light irradiation, plasma treatment, open plasma treatment, corona treatment, The chemical bond on the outermost surface of each layer described above is cut by photon energy (7.2 eV), discharge energy, electron beam energy, etc. larger than the chemical bond energy of the outermost surface of each layer, such as electron beam irradiation treatment, or Physical treatment such as ozone or directly excited oxygen generated by oxygen in the atmosphere, such as vacuum ultraviolet rays of 172 nm, generating functional groups by this contact, permanganate, peroxidation Each surface is oxidized by applying an oxidizing agent, primer coating, vinyl, epoxy, methacryloxy, Chemical treatment such as treatment with no-mercapto, acryloxy, isocyanate, styryl, alkoxy oligomer type silane coupling agent, argon beam etching treatment that is vacuum treatment, etching solution that partially dissolves the outermost surface of each layer described above A physical surface forming process such as a sandblasting process that further mechanically scrapes the surface of each layer is used. (A specific processing method is not shown.)
By this surface activation treatment, a large peel strength can be obtained even between the respective layers having low adhesion between the respective layers, that is, between the layers having a low peel strength at the interface.

Using the above surface activation treatment, the interfacial tension or surface energy of each layer described above is increased. For example, since the peel strength is determined by the resin used for the relief hologram forming layer and the forming method thereof, the interfacial tension value cannot be uniquely specified, but 60 to 80 mN / m is suitable as a standard. (In polyethylene terephthalate resin, 36 mN / m increases to 60 mN / m, and the peel strength from the melamine resin as the relief hologram forming layer increases from 0.4 kg / 25 mm width to 2.1 kg / 25 mm width. .)
Therefore, the surface of the predetermined layer described above is surface-activated to a predetermined pattern shape, and further to a pattern shape composed of a pattern composed of a set of fine patterns, and the predetermined layer formed on the surface is activated. Adhesion is improved, and the strength is 0.5 kg / 25 mm width or more and 3.0 kg / 25 mm width or less (in 180 ° peel test specified in JIS Z0237), and a desired pattern shape (characters, graphics) that can be visually recognized. Any symbol can be used as long as it is visible.Typically, in order to show evidence that the label has been peeled off, the part other than the “open” character is used to display characters such as “open”. "Patterned surface activation treatment interface" (region) 5.

  Among the surface activation treatments, optical treatment such as laser irradiation or physical treatment such as plasma treatment does not cause unnecessary irregularities on the treatment surface of the layer to be treated, for example, the relief hologram forming layer 2, and the mirror surface is formed. It is particularly desirable because it is maintained, and is excellent in optical transparency.

Furthermore, the “patterned“ pattern ”is made up of“ a set of finer patterns ”, for example, a set of fine areas such as halftone dots, checkered patterns, random patterns, etc. Then, only the fine region is activated (for example, by activating it in the form of a halftone dot, the portion other than the halftone dot in the “pattern” remains as a non-activated surface), whereby a relief hologram is obtained. Roughened state when the forming layer 2 is peeled off (a part of the relief hologram forming layer 2 breaks and adheres at the halftone dot portion on the peelable adhesive layer 4, and the fracture surface becomes a “rough surface”) Or, in the halftone dot portion on the peelable adhesive layer 4, the peelable adhesive layer 4 side is broken and fixed to the relief hologram forming layer 2 side and peeled off, After all "rough surface Means that it is observed as a.) A more complicated, it is possible to improve the scattering property of light.
(Peelable adhesive layer)
A peelable pressure-sensitive adhesive layer 4 is provided so as to fill the hologram relief 3 surface of the relief hologram forming layer 2 and to allow interface peeling at the interface with the relief hologram forming layer 2. (See FIGS. 1 to 3. See FIG. 3 for the state where the relief hologram forming layer 2 and the peelable adhesive layer 4 are peeled off.)
As the resin that can be used for the peelable pressure-sensitive adhesive layer 4, a resin that satisfies a predetermined requirement can be appropriately selected from various thermoplastic resins, thermosetting resins, or ionizing radiation curable resins.

  At this time, it is preferable that “the wettability is low” of the peelable adhesive layer 4 with respect to the relief hologram forming layer 2, and the surface tension of the relief hologram forming layer 2 can be set smaller than the surface tension of the peelable adhesive layer 4. preferable.

Examples of the thermoplastic resin include cellulose resins such as acrylamide resin (n = 1.50) or polystyrene resin (n = 1.60), that is, cellulose nitrate (n = 1.54), methylcellulose (n = 1. 50), cellulose acetate propionate (n = 1.47), etc., acrylic ester resin, that is, polymethyl methacrylate (refractive index n = 1.49), polymethyl acrylate (n = 1.47), poly Benzyl methacrylate (n = 1.57), polybutyl acrylate (n = 1.44), polyisobutyl acrylate (n = 1.48), etc., vinyl resins, that is, polyvinyl acetate (n = 1.47), Polyvinyl chloride / vinyl acetate (n = 1.54) or the like, and as the thermosetting resin, silicon resin (n = 1.41 to 1) 60), phenol resin (n = 1.60), melamine resin (n = 1.56), alkyd resin (n = 1.54), unsaturated polyester resin (n = 1.64), acrylic urethane resin (n = 1.60), epoxy-modified acrylic resin (n = 1.55), epoxy-modified unsaturated polyester resin (n = 1.64), or fluorinated resin (n = 1.35 to 1.38). Can be mentioned. (See FIGS. 1 to 3)
These thermoplastic resins and thermosetting resins may be used alone or in combination of two or more, and may be cross-linked using various isocyanate resins, or various curing catalysts may be blended. .

  Examples of the ionizing radiation curable resin include epoxy acrylate, urethane acrylate, acrylic-modified polyester, etc., for the purpose of introducing a crosslinked structure into such an ionizing radiation curable resin or adjusting the viscosity, A monofunctional monomer, a polyfunctional monomer, or an oligomer may be blended and used.

In addition, a mixture of the above thermoplastic resin or thermosetting resin with a silicon resin or a fluorine-containing resin, or a silicone oil, or a thermoplastic resin or a thermosetting resin and a silicon resin or a fluorine-containing resin. And those obtained by introducing a siloxane bond [—Si (R ₁ ) (R ₂ ) —O—] or a fluorine atom [—F] into the molecule of a thermoplastic resin or thermosetting resin. Can be used.
Furthermore, the above-described thermoplastic resin or thermosetting resin in which silicon powder fine particles or fluorine powder fine particles are dispersed may be used.

  Fluorinated resins include perfluorinated fluorocarbon resins, tetrafluorinated resins, partially fluorinated resins, trifluorinated resins, polyvinylidene fluoride, polyvinyl fluoride, and fluorinated resin copolymers. Tetrafluoroethylene / hexafluoropropylene copolymer, ethylene / tetrafluoroethylene copolymer, ethylene / chlorotrifluoroethylene copolymer and the like can be used.

The surface tension (also referred to as interfacial tension) of these resins is JIS K6768 (revised), polytetrafluoroethylene (polytetrafluoroethylene) 18, silicon resin 20, polytrifluorinated ethylene (PTFE) 22 , Polyvinylidene fluoride 25, polyvinyl fluoride 28, polyethylene (density 0.955) 31, polystyrene 33, polycarbonate 35, polyvinyl alcohol 37, polyvinyl acetate 37, polymethyl methacrylate 39, polyvinyl chloride 39, polyvinylidene chloride 40 , Urethane resin 40, nylon 6:42, polyethylene terephthalate 43, urea resin 45, nylon 66:46, cyclic aliphatic epoxy resin 46, polyvinyl butyral 54 mN / m, etc. (wetting tension test manufactured by Wako Pure Chemical Industries, Ltd.) With mixed liquid Actual measurement is possible.)
However, if a difference in surface tension is provided between the two layers in this way, it becomes difficult for the peelable adhesive layer 4 to fill the hologram relief 3 surface with high accuracy. Therefore, after the peelable adhesive layer 4 is formed, From the peelable pressure-sensitive adhesive layer 4 side, through a suitable peelable film (to prevent the peelable pressure-sensitive adhesive layer 4 from attaching), a flat plate press or a roll press is applied to form a hologram relief shape on the peelable pressure-sensitive adhesive layer 4 Improve the transfer accuracy.

  For this reason, the relief hologram forming layer 2 is aged for several days to several months at 30 ° C. to 80 ° C. using a two-component curing type reactive resin system such as a [urethane resin / isocyanate curing agent] type. Reactions such as treatment, surface corona treatment with a corona treatment machine for insulating substrates manufactured by Kasuga Electric, and additional irradiation of the ionizing radiation with the resin of the relief hologram forming layer 2 as an ionizing radiation curing type And the degree of curing (particularly the degree of curing of the hologram relief 3 surface of the relief hologram forming layer 2) is brought close to 100%, thereby reducing the surface tension of the hologram relief 3 surface, and further, the hologram relief 3 surface Fluorine treatment and fluorine ion implantation treatment of the hologram relief without changing the “shape” of the three hologram relief surfaces Reduce the surface tension of the leaf three sides.

  The surface tension of the peelable adhesive layer 4 is made 1 mN / m or more larger than the surface tension of the hologram forming layer 2. Furthermore, the difference is 10 mN / m or more, more preferably 20 mN / m or more.

At this time, the roll linear pressure from the exposed surface side of the peelable pressure-sensitive adhesive layer 4 (meaning the surface opposite to the hologram relief 3 surface of the peelable pressure-sensitive adhesive layer 4) is 0.1 kg or more / roll 1 cm wide roll press. Or, a flat pressure press of 10 ⁷ Pa or more is used in combination.

  Furthermore, as the resin that can be used for the peelable adhesive layer 4, the interface peel strength with the relief hologram forming layer 2 is selected from various thermoplastic resins, thermosetting resins, or ionizing radiation curable resins. The ink composition for the peelable pressure-sensitive adhesive layer 4 has a width of 0.1 to 200 g / 25 mm, particularly 1.0 to 30 g / 25 mm (according to a peeling method based on 180 ° in accordance with JIS Z0237). It is assumed that a solvent-based or water-based solvent that hardly dissolves the relief hologram forming layer 2 is used and does not adversely affect the “optical mirror surface” property of the hologram relief 3 of the relief hologram forming layer 2.

  In order to further enhance the interfacial peelability of the peelable adhesive layer 4 with the relief hologram forming layer 2, inorganic resin such as microsilica and fine particle resin such as silicon resin and fluororesin powder are used in the resin that can be used for the peelable adhesive layer 4. 1.0 to 30.0% of powder, other additives such as calcium carbonate, barium sulfate, lubricants such as talc, extender pigments, and release agents such as silicone oil are added to the resin component.

  Furthermore, the refractive index of the peelable adhesive layer 4 is substantially the same as the refractive index of the relief hologram forming layer 2, that is, the refractive index of the peelable adhesive layer 4 and the refractive index of the relief hologram forming layer 2 are the same, or The refractive index difference is 0.1 or less. In particular, the refractive index difference between the two layers is set to 0.05 or less for any wavelength of visible light (400 nm to 800 nm).

  Further, the peelable adhesive layer 4 is a “high refractive index transparent resin layer”, that is, a transparent resin layer system having a refractive index n of 1.7 to 2.3 (including pigments etc.) while ensuring “transparency”. Meaning).

  Resins used for this high refractive index resin layer are acrylic resin, polyester resin, polyurethane resin, vinyl chloride resin, vinyl acetate resin, vinyl chloride-vinyl acetate copolymer resin, polyamide resin, melamine Examples thereof include resins and phenol resins.

  The refractive index of the resin used is, for example, an acrylic ester resin (refractive index n = 1.47), an acrylamide resin (n = 1.50), a nitrocellulose resin (n = 1.54), as a thermoplastic resin. Vinyl acetate resin (n = 1.47), polystyrene resin (n = 1.60) or the like, and as thermosetting resin, unsaturated polyester resin (n = 1.64), urethane resin (n = 1.60), epoxy-modified acrylic resin (n = 1.55), epoxy-modified unsaturated polyester resin (n = 1.64), alkyd resin (n = 1.54), or phenol resin (n = 1. 60) etc.

  Examples of the ionizing radiation curable resin include epoxy acrylate (n = 1.55), urethane acrylate (n = 1.54), acrylic modified polyester (n = 1.64), and the like.

  Furthermore, in consideration of the environment, it is also preferable to use a biodegradable plastic as described above for the high refractive index resin layer.

  Furthermore, a transparent resin material having a relatively high refractive index is selected, and a pigment having a refractive index of 2.0 or more is mixed in the resin material in an amount of about 30 to 70%, thereby obtaining a “layer having a high refractive index”. To do.

  The pigments are particularly suitable for fine particle transparent pigments and ultrafine particle pigments, such as calcium carbonate, barium sulfate, aluminum hydroxide, clay, kaolin, white carbon, alumina white, diatomaceous earth, gypsum, talc, and quartzite powder. Finely pulverized extender pigments, inorganic fine particles such as microsilica, fine particle resin powders such as silicon resin and fluororesin powder, other fine particle pigments having an average particle size of 0.1 μm to 0.01 μm, Use an ultrafine pigment of not more than 01 μm.

  Specifically, the average particle size is adjusted for finely pulverized naturally occurring calcite, ice sheets, aragonite, limestone, marble, shells, chalk, barite, gypsum, gibbstone, etc., and their composites. In addition, as for inorganic pigments and organic pigments that are generally used, those having an average particle size of 0.01 μm or less, such as ultrafine titanium oxide and ultrafine zirconium oxide, are appropriately resinous. It is suitable because it becomes transparent when mixed with the material. In particular, the pigment itself preferably has a refractive index of 2.0 to 3.0. When the refractive index exceeds 3.0, the metallic luster starts to appear, and the transparency is insufficient. Therefore, the refractive index is used in consideration of this point.

  As a specific example, when ultrafine titanium oxide (TTO-55N manufactured by Ishihara Sangyo Co., Ltd .: refractive index n = 2.4) is dispersed in an appropriate resin, the refractive index as the high refractive index resin layer is 1. 9 to 2.0, and refraction as a high refractive index resin layer when ultrafine zirconium oxide (average particle diameter 0.0001 μm to 0.05 μm in dynamic light scattering method) is dispersed in an appropriate resin. The rate is 1.7-1.9.

  However, particles having this particle size are liable to agglomerate, and need to be subjected to redispersion treatment such as repeated passage through an appropriate dispersion treatment machine such as a kneader. The amount of addition is determined by the balance between the degree of improvement of the refractive index and transparency, but usually 1% to 20% addition is preferable, dissolved in an appropriate solvent or water considering the relief hologram forming layer 2, It is used by being dispersed in the resin selected as the peelable adhesive layer 4.

  Furthermore, as the peelable pressure-sensitive adhesive layer 4, any conventionally known solvent-based or water-based pressure-sensitive adhesives such as vinyl acetate resin, acrylic resin, vinyl acetate-acrylic copolymer, vinyl acetate-vinyl chloride copolymer, ethylene- From the vinyl acetate copolymer, polyurethane resin, rubber-based resin such as natural rubber and chloroprene rubber, those satisfying the predetermined requirements are appropriately selected.

  In order to make the material composition natural, especially natural latex such as latex mainly composed of natural rubber, modified natural rubber latex, especially natural rubber latex obtained by graft polymerization of natural rubber with styrene, especially methyl methacrylate, etc. You may use what was produced from the raw material.

  Solvents used in the peelable adhesive layer 4 include solvents such as ketones (acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, diacetone alcohol, isophorone, diisobutyl ketone, etc.), alcohols (methanol, ethanol, Isopropyl alcohol, n-propyl alcohol, isobutyl alcohol, n-butyl alcohol and the like, and aqueous solutions thereof), aromatics (benzene, toluene, xylene, Solvesso No. 100, Solvesso No. 150, Cactus P-180, etc.). ), Cyclic hydrocarbons (such as cyclohexane), esters (ethyl acetate, butyl acetate, isobutyl acetate, propylene glycol monomethyl ether acetate, cellosolve acetate, ethyl-3-ethoxypropionate, etc.), Ether compounds (tetrahydrofuran, methyl cellosolve, ethyl cellosolve, butyl cellosolve, t-butyl cellosolve.) And the like can be used.

  The thickness of the peelable adhesive layer 4 is 10 μm to 60 μm.

  As a method for forming the peelable adhesive layer 4, it may be formed by applying and drying so as to fill the hologram relief 3 of the relief hologram forming layer 2 with high accuracy by a method such as gravure coating, roll coating or comma coating. it can.

When more precise printing is required, a stainless screen printing method, a letterpress printing method, an offset printing method, a photoresist processing method, or the like can be used. (See FIGS. 1 to 3)
The adhesive strength of the peelable adhesive layer 4 is 1.0 to 3.0 kg / 25 mm width as the peel strength at the interface with the base material 8 or the “secret information” 9 forming portion in the peel method at 180 ° according to JIS Z0237. It is desirable to be in the range. Of course, even higher peel strengths are suitable for the purposes of the present invention.

  In particular, the adhesive strength between the base material 8 and the “secret information” 9 forming portion on the base material 8 is determined by applying the scratch label H or H ′ of the present invention on the base material 8 and the base material 8 for the purpose of the present invention. The “secret information” 9 formation part of the above-mentioned needs to be large enough to be difficult to remove.

The scratch label H or H ′ of the present invention thus formed was stuck on a predetermined position of the base material 8 of the scratch card 7 used for a certain purpose. (See Figure 4.)
At this time, continuous numbers 1 to 8 are printed as “secret information” 9 at a predetermined position on the substrate 8 (see FIG. 5. In FIG. 5, a frame indicating the predetermined position is displayed for convenience. The scratch label H or H ′ of the present invention is attached so as to cover the “secret information” 9.

In addition, the scratch label H or the scratch concealing layer 1 of H ′ of the present invention on which the background pattern printing 10 made of a geometric pattern was applied was pasted on the base material 8 of the scratch card 7. (See Figure 6.)
In any case, visually, the “secret information” 9 covered with the scratch label H or H ′ of the present invention cannot be visually recognized, and from the appearance, the scratch label H, Alternatively, it was very difficult to know that the relief hologram forming layer 2 exists in H ′.

  Then, when the scratch concealment layer 1 of the scratch label H or H ′ of the present invention, or the copy-forgery-inhibited pattern printing 10 and the scratch concealment layer 1 are partially scraped off using coins, they are hidden under the scraped area. The "secret information" 9 that had been visible can now be seen.

  However, even at this stage, it is impossible to know that the relief hologram forming layer 2 exists in the scratch label H or H ′, and further, the remaining scratch concealing layer 1 and the relief hologram forming layer 2 are peeled off, For the first time, the hologram relief 3 on the peelable adhesive layer 4 (the hologram relief 3 of the relief hologram forming layer 2 is transferred and formed) is exposed, and the “secret information” 9 and the relief hologram forming layer 2 from the relief hologram forming layer 2 are exposed. The relief hologram reconstructed image could be seen at the same time. (A state where the scratch concealment layer 1 and the relief hologram forming layer 2 are peeled off to expose the hologram relief 3 on the peelable adhesive layer 4 is shown in FIG. 3).

EXAMPLES Hereinafter, although an Example and a comparative example demonstrate this invention further in detail, it is not limited to this. In addition, except a solvent, each composition of each layer is a mass part of solid content conversion.
Example 1
As a base material 8 of the scratch card 7, a predetermined design is applied to a milk white polyethylene terephthalate sheet (card size) having a thickness of 188 μm by offset printing (see FIG. 4). In this area, a number “12345678” (4 mm in height, 2 mm in width, 1 mm in character spacing) was printed as “secret information” 9.

Separately, a 38 μm-thick transparent polyethylene terephthalate sheet (release film having a surface roughness of 3 μm to 10 μm. The surface of which was subjected to a release treatment with a fluororesin and a roughening treatment. The ink composition for scratch concealment layer 1 having the following composition is formed by a stainless screen printing method, and the thickness of the scratch concealment layer 1 is 30 μm after drying. Formed in thickness. (See FIG. 1. The peelable film (1) is not shown.)
・ <Ink composition for scratch concealment layer 1>
Acrylonitrile-butadiene copolymer 20 parts Acrylic resin 5 parts Pigment non-leafing aluminum paste Aluminum fine powder 40 parts Pigment leafing aluminum paste Aluminum fine powder 10 parts Isocyanate-based curing agent 1 part Toluene 10 parts Ethyl acetate 5 parts Ethyl cell solve 9 parts Next On the scratch concealment layer 1, using a stainless steel metal roll plate having high surface smoothness (average surface roughness Ra is 0.1 μm), calendering is performed at 100 ° C. with a linear pressure of 100 kg / cm. Then, the surface of the scratch concealment layer 1 is smoothed, and an ink composition for the relief hologram forming layer 2 having the following composition is formed thereon by a stainless screen printing method. The formation layer 2 was formed with a thickness of 10 μm. (See FIG. 1. The peelable film (1) is not shown.)
・ <Ink composition for relief hologram forming layer 2>
Melamine resin 30 parts Toluene 10 parts Methyl alcohol 10 parts Isopropyl alcohol 20 parts Ethyl cellosolve 20 parts Butyl cellosolve 10 parts Here, a Ni original plate provided with a hologram (relief hologram) with high design taken using a laser optical system The relief surface of the Ni original plate is aligned with the relief hologram forming layer 2 described above, and a rotary relief hologram forming device (original cylinder diameter 1.0 m, original surface temperature 100 ° C., pressure cylinder diameter 0.3 m) is prepared. The hologram relief 3 (the relief shape of the Ni original plate) was formed on the relief hologram forming layer 2 with a water cooling method, a pressure of 2000 kg / m, and a replication speed of 10 m / min. (See FIG. 1. The peelable film (1) is not shown.)
On the hologram relief 3 of the relief hologram forming layer 2, excimer UV03 reforming device is used, and excimer light with a wavelength of 172 nm is used as “open” and “sealed” in a size of 10 mm × 10 mm. The surface activation treatment was performed by irradiating as an irradiation pattern arranged vertically and horizontally.

The arrangement of the characters “open” and “sealing” is a “patterned” “surface activation treatment interface” region 5, and the other regions are “interfaces excluding the surface activation treatment interface” region. . (See Figure 1)
For the peelable adhesive layer 4 having the following composition so as to fill the hologram relief 3 on the surface of the hologram relief 3 of the relief hologram forming layer 2 and to cover the “surface activation treatment interface” region 5. After the ink composition is formed by a stainless screen printing method and dried to a thickness of 30 μm, the peelable adhesive layer 4 has a thickness of 30 μm. Through a roll press treatment in which a linear pressure of 2.0 kg / 1 cm roll width is applied through a film (38 μm polyethylene terephthalate film whose surface has been subjected to fluorination treatment, hereinafter referred to as “peelable film (2)”). Pressing was performed to improve the followability of the peelable adhesive layer 4 to the hologram relief 3. (See FIG. 1. Two types of peelable films (1) and (2) and roll press treatment are not shown).
・ <Adhesive composition for peelable adhesive layer 4>
Vinyl acetate-acrylic copolymer 20 parts Cellulose acetate 10 parts Isophorone diisocyanate 0.1 part Toluene 10 parts Isopropyl alcohol 20 parts Ethyl acetate 30 parts Ethyl cellosolve 10 parts This scratch concealment layer 1, relief hologram forming layer 2, and release The laminate of the adhesive layer 4 was cut into a size of 10 mm in length and 30 mm in width, and peeled off from the peelable films (1) and (2) to obtain the scratch label H of the first example of the present invention. (See Figure 1)
This scratch label H is pasted at a predetermined position on the base material 8 of the scratch card 7 so as to cover the “secret information” 9 printed on the base material 8. As a result, the “silver label” can only be observed on the scratch card 7, and the “secret information” 9 and the existence of the hologram formed below and in it can not be known. There wasn't. (See FIG. 4. In FIG. 4, “1-6” becomes “1-5”.)
Next, when the “silver label” on the scratch card 7 was scratched with a coin, the scratch concealment layer 1 was partially scraped, and a part of the “secret information” 9 was visually recognized from the scraped portion. Even at this stage, I could not know the existence of the hologram. (Not shown)
Next, when the nail was scratched on the cross section of the “silver label” portion and peeled off, peeling occurred from the interface between the relief hologram forming layer 2 and the peelable adhesive layer 4, and “unscratched scratches” The laminated portion of the concealing layer 1 and the relief hologram forming layer 2 is peeled off (see FIG. 3. However, FIG. 3 is a diagram in which the interfacial separation is generated without removing the scratch concealing layer 1). Relief hologram reproduction image “hologram with high designability” by hologram relief 3 transferred to the adhesive layer 4 and “surface” provided inside the relief hologram reproduction image so as to block the relief hologram reproduction image A sequence of characters “open” and “sealed” appearing in the “activation processing interface” area 5 appears, and “secret information” 9 and its relief hologram reproduction image and “pattern” are displayed. It is assumed that down-like "in" to the surface activation treatment interface "region 5 visible at the same time, it appeared difficult to forge the" silver label ". (Not shown)
(Example 2)
On the surface opposite to the surface in contact with the relief hologram forming layer 2 of the scratch concealing layer 1 of Example 1, yellow tint block printing 10 made of a geometric pattern was performed with a sublimation transfer printer. (This printed surface was the surface that was in contact with the peelable film (1), and was formed after peeling the peelable film (1).) The scratch label of Example 2 was the same as Example 1. H was obtained. (See FIGS. 1, 4 and 6.)
When the scratch label H on the scratch card 7 was evaluated in the same manner as in Example 1, it was found that the tint block print 10 had a unique texture and was observed in gold, and when scratched with coins, Good results similar to those of Example 1 were obtained except that the concealing layer 1 was scraped at the same time and it was thought that forgery of the label was more difficult. (Not shown)
Example 3
In Example 1, a transparent polyethylene terephthalate sheet having a thickness of 16 μm was used as a transparent base material without using a release film (see FIG. 2), and the scratch concealment layer 1 was applied to one side thereof in the same manner, and After forming the relief hologram forming layer 2 with the same thickness and the same thickness on the other surface, the hologram relief 3 is formed on the surface by the same hologram duplication method. Example 1 except that the “patterned” “surface activation treatment interface” region 5 and the peelable adhesive layer 4 were formed on the hologram relief 3 in the same manner and with the same thickness. Similarly, the scratch label H ′ of Example 2 was obtained. (See FIGS. 2 and 4.)
The scratch label H ′ on the scratch card 7 was evaluated in the same manner as in Example 1. As a result, the scratch concealment layer 1 can be removed cleanly from the transparent substrate surface without leaving any shaving residue when scratched with a coin. The same as in Example 1 except that it was thought that the off could be carried out stably and, therefore, the “secret information” 9 became clearer and the anti-counterfeiting property seemed to have increased. Good results were obtained. (Not shown)
Example 4
A scratch label H of Example 4 was obtained in the same manner as in Example 1 except that an ink composition having the following composition was used as the relief hologram forming layer 2 and the peelable adhesive layer 4 of Example 1. . (See FIGS. 1 and 4)
・ <Ink composition for relief hologram forming layer 2>
Polybutyl acrylate (n = 1.44) 30 parts Toluene 10 parts Methyl alcohol 10 parts Isopropyl alcohol 20 parts Ethyl cellosolve 20 parts Butyl cellosolve 10 parts ・ <Ink composition for peelable adhesive layer 4 (n = 1.45) )>
Silicone resin (refractive index n = 1.44) 25 parts Vinyl acetate resin (n = 1.47) 5 parts Ethyl acetate 10 parts Isopropyl alcohol 35 parts Butyl cellosolve 25 parts Example of scratch label H on scratch card 7 When evaluated in the same manner as in No. 1, when a coin was scratched, even when observed under sunlight, a relief hologram reproduction image by the hologram relief 3 did not occur at all, and the anti-counterfeiting property seemed to be greatly enhanced. Except for this, good results similar to those of Example 1 were obtained. (Not shown)
(Example 5)
A scratch label H of Example 5 was obtained in the same manner as in Example 1 except that an ink composition having the following composition was used as the relief hologram forming layer 2 and the peelable adhesive layer 4 of Example 1. . (See FIGS. 1 and 4)
・ <Ink composition for relief hologram forming layer 2>
Polybutyl acrylate (n = 1.44) 30 parts Toluene 10 parts Methyl alcohol 10 parts Isopropyl alcohol 20 parts Ethyl cellosolve 20 parts Butyl cellosolve 10 parts ・ <Ink composition for peelable adhesive layer 4>
Silicone resin (refractive index n = 1.54) 20 parts Polyvinyl chloride / vinyl acetate (n = 1.54) 10 parts Ethyl acetate 10 parts Isopropyl alcohol 35 parts Butyl cellosolve 25 parts Scratch label H on this scratch card 7 Was evaluated in the same manner as in Example 1, and when the coin was scratched, the relief hologram reproduction image by the hologram relief 3 could not be visually recognized even when viewed close to the indoor fluorescent lamp, and the anti-counterfeiting property seems to have increased. Except for this, the same good results as in Example 1 were obtained. (Not shown)
(Example 6)
A scratch label H of Example 6 was obtained in the same manner as Example 1 except that the ink composition having the following composition was used as the relief hologram forming layer 2 and the peelable adhesive layer 4 of Example 1. . (See FIGS. 1 and 4)
<Ink composition for relief hologram forming layer 2>
Polybutyl acrylate (n = 1.44) 30 parts Toluene 10 parts Methyl alcohol 10 parts Isopropyl alcohol 20 parts Ethyl cellosolve 20 parts Butyl cellosolve 10 parts ・ <Ink composition for peelable adhesive layer 4: Refractive index n = 1 .71 high refractive index transparent resin layer>
Urethane resin (refractive index n = 1.60) 30 parts by mass Ultrafine particle zirconium oxide (average particle size: 0.001 μm, refractive index n = 2.10)
6 parts ethyl acetate 5 parts isopropyl alcohol 34 parts butyl cellosolve 25 parts The scratch label H on the scratch card 7 was evaluated in the same manner as in Example 1. When the scratch concealment layer 1 and the relief hologram forming layer 2 were peeled off, The same relief results as in Example 1 were obtained except that the appearing relief hologram reproduced image appeared clearer and the anti-counterfeiting property seemed to be enhanced. (Not shown)
(Example 7)
In Example 1, using the ink composition for scratch concealment layer 1 having the following composition, the same procedure as in Example 1 was conducted except that the scratch concealment layer 1 was formed in the same manner and with the same thickness. The scratch label H of Example 7 was obtained. (See Figure 1)
<Ink composition for scratch concealment layer 1>
Acrylonitrile-butadiene copolymer 20 parts Acrylic resin 5 parts Pigment aluminum paste Aluminum fine powder (average particle size 8 μm) 30 parts Fine zirconium oxide (average particle size: 0.01 μm) 20 parts Silicone oil 5 parts Toluene 10 parts Ethyl acetate 5 Part Ethyl Cellosolve 5 parts Scratch label H on this scratch card 7 was evaluated in the same manner as in Example 1, and when the scratch label H was peeled off, in addition to the same good results as in Example 1, Since a “peeling mark” was generated in a portion of the scratch concealment layer 1 where the scratch was not scratched off, it seemed that this label was very difficult to counterfeit. (Not shown)
(Comparative example)
In Example 1, a scratch label of a comparative example was obtained in the same manner as in Example 1 except that the relief hologram forming layer 2 was not provided and a scratch label was formed.

  When this scratch label was evaluated in the same manner as in Example 1, it was possible to visually recognize the “secret information” 9 by scratching off, but a hologram reproduction image did not appear, and it was found to be a normal scratch label. It was estimated that forgery was possible.

H, H ′ Scratch label 1 Scratch concealing layer 2 Relief hologram forming layer 3 Relief hologram forming layer hologram relief 4 Peelable adhesive layer 5 Patterned surface activation treatment interface (region)
6 Transparent base material 7 Scratch card 8 Base material 9 “Confidential information”
10 Background pattern printing

Claims (8)

A scratch label that conceals confidential information provided on a substrate,
A scratch concealing layer, a relief hologram forming layer, and a peelable adhesive layer are configured in this order, and at the same time, a patterned surface activation treatment is applied to the interface between the relief hologram forming layer and the peelable adhesive layer, The interface includes the patterned surface activation treatment interface;
By removing the scratch concealing layer by scratching, the secret information can be visually recognized, and the interface between the relief hologram forming layer and the peelable adhesive layer excluding the pattern-like surface activation treatment interface. A scratch label, wherein a relief hologram reproduction image reproduced from the relief hologram forming layer becomes visible when peeling occurs.
The scratch label according to claim 1, wherein the surface activation treatment in the pattern form is a light treatment or a physical treatment.
The scratch label according to claim 1 or 2, wherein the pattern of the surface activation treatment in the pattern form is constituted by a set of fine patterns.
The scratch label according to any one of claims 1 to 3, wherein a copy-forgery-inhibited pattern printing is performed on a surface of the scratch concealing layer opposite to a surface on which the relief hologram forming layer is formed.
The scratch label according to any one of claims 1 to 4, wherein a transparent substrate is provided between the scratch concealing layer and the relief hologram forming layer.
6. The refractive index of the peelable adhesive layer is the same as the refractive index of the relief hologram forming layer, or the refractive index difference is 0.1 or less. Scratch label.
The scratch label according to any one of claims 1 to 6, wherein the peelable adhesive layer is a high refractive index transparent resin layer, and the refractive index of the peelable adhesive layer is 1.7 or more. .
8. The scratch concealing layer contains a pigment having an average particle diameter of 1.0 μm to 10 μm and a fine pigment having an average particle diameter of 0.01 μm to 0.1 μm. Scratch label.

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