JP4973163B2 - Scratch card manufacturing method and scratch card - Google Patents

Description

  The present invention relates to a scratch card manufacturing method, and more particularly, a scratch card manufacturing method for transferring a transfer layer onto a concealing layer (hereinafter referred to as a scratch layer) surface removed by rubbing, and the scratch card. It is about.

  In the present specification, “ratio”, “part”, “%” and the like indicating the composition are based on mass unless otherwise specified, and the “/” mark indicates that they are integrally laminated. “Scratch layer” is an abbreviation, functional expression, common name, or industry term for “hiding layer” and “PET” is “polyethylene terephthalate”.

  (Main use) The main use of the scratch card of the present invention is a lottery card, a lottery ticket, a prepaid card, and the like. However, there is no particular limitation as long as the application requires a concealing layer (hereinafter referred to as a scratch layer) for concealing lottery results, individual information, and the like such as various cards.

(Background Art) Conventionally, this type of scratch card is provided with a scratch layer for concealing the lottery result, individual information, etc., but the scratch layer is thick by printing in order to have a sufficient concealment effect. It is a silver ink layer. The silver ink layer is provided in a conspicuous main portion of the scratch card, but is plain and has low design properties. In order to solve this problem, some scratch layers are provided with holograms, but the production efficiency is low. In use, the scratch layer is removed from the surface of the release layer by rubbing with a coin, a nail, or the like, so that a printed layer such as individual information can be visually observed.
Therefore, a scratch card manufacturing method and a scratch card are required to have a high design property, high security, a high production efficiency, and a high yield.

(Prior Art) Conventionally, a scratch card is provided with a print layer on which individual information is printed, a release layer, a scratch layer, etc., and the scratch layer conceals the individual information etc. and can be scraped off by a coin or the like. And what is a peeling layer is a layer which makes it possible to peel the scratch layer formed in the upper surface (for example, refer patent documents 1-2). However, the scratch layer is a normal ink layer and has a problem of low design.
In addition, the present applicant has disclosed a scratch card in which a hologram layer is formed on the upper side of the scratch layer in order to enhance security (see, for example, Patent Document 3). However, the method of forming the hologram layer on the upper side of the scratch layer is a transfer method, and the hologram layer is transferred to the position of the scratch layer provided in advance on the card surface, but the metal reflection layer of the hologram is opaque. For this reason, the hologram cannot be seen through the hologram during alignment, the alignment takes a long time, the production efficiency is extremely low, and the transfer temperature is increased to increase the production efficiency. Then, there is a drawback of whitening. In order to solve the above-mentioned problems, the present inventors have intensively studied and have arrived at the present invention.

Japanese Utility Model Publication No. Hei 6-42229 JP 2003-72268 A JP 2005-324521 A

  In order to solve the above-described problems, the present inventors have made extensive studies and have completed the present invention. An object of the present invention is to provide a scratch card manufacturing method and a scratch card that have high design properties, high security, high production efficiency, and high yield.

To solve the above problem,
A method for manufacturing a scratch card according to the invention of claim 1 conceals secret information provided on a card substrate and has at least a hologram layer and a transparent reflective layer on the scratchable surface of the scratch layer. In the method for manufacturing a scratch card for transferring a card, (1) a hologram transfer foil preparation step for preparing a hologram transfer foil having the transfer layer in advance, and (2) secret information on at least one surface of the card substrate. A printing layer forming step for printing; (3) a peeling layer forming step for forming a peeling layer so as to cover the printing layer; and (4) a concealing property so as to have a peripheral edge inside the peripheral edge of the peeling layer. A scratch layer forming step of forming a scratch layer; and (5) a transfer star having a peripheral edge inside the peripheral edge of the release layer and outside the peripheral edge of the scratch layer. Using the path, the peripheral edge of the transfer stamper is located inside the peripheral edge of the peeling layer, and, as is outside the perimeter of the scratch layer, the position of the transfer stamper forming the transfer layer A transfer step of transferring the transfer layer onto the surface of the scratch layer by visually aligning with the scratch layer through the transparent reflection layer and the hologram layer, and pressing the transfer layer against the scratch layer When, only including, peripheral prior Symbol transferred transfer layer is a method for producing a scratch card, characterized in that 0.1~2mm larger than the periphery of the scratch layer.

According to the present invention of claim 1, without whitening even accelerate the transfer rate by increasing the transfer temperature, scratch cards with low meaning Takumi resistant scratch layer excellent in design property and security covered with a transparent hologram, A method of manufacturing a scratch card with high production efficiency and high yield is provided.
Further, when the scratch card manufactured by the manufacturing method of the present invention have been inadvertently bent even less crack reduction and bleaching of appearance due as occurs in holograms the metallic reflective layer, less meaning Takumi property since the scratch layer is covered with a transparent hologram, ing and scratch card which is excellent in design and high security of the transparent hologram.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a cross-sectional view of a scratch card showing one embodiment of the present invention.
FIG. 2 is a cross-sectional view of a hologram transfer foil used in the scratch card manufacturing method of the present invention.
FIG. 3 is an explanatory view for explaining a method of manufacturing a scratch card according to the present invention.

  (Invention of Method) The manufacturing method of the scratch card 10 of the present invention conceals the secret information provided on the card substrate 101, and at least the hologram layer 15 and the transparent reflection layer are formed on the scratch layer 23 which can be scratched. 17 is a method of manufacturing a scratch card 10 for transferring a transfer layer 21 having (17) a hologram transfer foil 10 preparation step for preparing the hologram transfer foil 1 having the transfer layer 21 in advance; A printing layer 27 forming step for printing secret information on at least one surface of the card substrate 101; (3) a peeling layer 25 forming step for forming the peeling layer 25 so as to cover the printing layer 27; A scratch layer 23 forming step of forming a concealing scratch layer 23 so as to have a periphery inside the periphery of the release layer 25; and (5) the periphery of the release layer 25. By pressing the transfer layer 21 against the scratch layer 23 using a transfer stamper located inside the periphery and outside the periphery of the scratch layer 23, the surface of the scratch layer 23 is A transfer step of transferring the transfer layer 21.

(Invention of Product) As shown in FIG. 1, the scratch card 10 of the present invention comprises a transfer layer 21 {peeling layer 13 (if necessary) / hologram layer 15 / transparent reflective layer 17 / adhesive layer 18 (if necessary). )} / Scratch layer 23 / peeling layer 25 / printing layer 27 / card substrate 101. The periphery of the transfer layer is made larger than the periphery of the scratch layer.
Moreover, it is preferable to make the periphery of the transfer layer 21 larger than the periphery of the scratch layer 23, and it is 0.1 to 2 mm larger. However, since the scratch layer with low design is covered with the transparent hologram, the transparent hologram Further, it is more preferable in that it has excellent design properties and high security, and even when the scratch card is bent carelessly, there is little deterioration in appearance due to cracks generated in the hologram of the metal reflection layer and less whitening phenomenon. The card of the scratch card 10 of the present invention is not limited to the card shape, and may be various forms such as a label, a slice, a bookmark, and a leaflet.

  (Hologram Transfer Foil Preparation Step) The first step is a hologram transfer foil 1 preparation step for preparing the hologram transfer foil 1 having the transfer layer 21. As shown in FIG. 2, the hologram transfer foil 1 has a layer structure of transfer substrate 11 / peeling layer 13 (if necessary) / hologram layer 15 / transparent reflective layer 17 / adhesive layer 18 (if necessary). Yes, the release layer 13 and / or the adhesive layer 18 may be provided as necessary.

  (Transfer Base Material) As the transfer base material 11, various materials can be applied depending on the use as long as they have heat resistance, mechanical strength, mechanical strength to withstand manufacturing, solvent resistance, and the like. For example, polyester resins such as polyethylene terephthalate / polybutylene terephthalate / polyethylene naphthalate, polyamide resins, vinyl resins such as polyvinyl chloride, acrylic resins, imide resins, engineering resins such as polyarylate, polycarbonate, cyclic polyolefin There are cellulosic films such as cellulosic resins and cellophane. The transfer substrate may be a copolymer resin containing these resins as a main component, a mixture (including alloy), or a laminate composed of a plurality of layers. Usually, polyester films such as polyethylene terephthalate and polyethylene naphthalate are preferably used because of their good heat resistance and mechanical strength, and polyethylene terephthalate is most suitable.

  The transfer substrate 11 may be a stretched film or an unstretched film, but a film stretched in a uniaxial direction or a biaxial direction is preferable for the purpose of improving the strength. The thickness of the transfer substrate is usually about 2.5 to 50 μm, preferably 2.5 to 12 μm, and most preferably 4 to 6 μm. Prior to coating, the transfer substrate 11 is subjected to corona discharge treatment, plasma treatment, ozone treatment, flame treatment, primer (also called an anchor coat, adhesion promoter, or easy adhesive) coating treatment, pre-heat treatment, removal. Easy adhesion treatment such as dust treatment, vapor deposition treatment, and alkali treatment may be performed. Moreover, you may add additives, such as a filler, a plasticizer, a coloring agent, and an antistatic agent, as needed.

  (Release layer, release layer) In order to improve the releasability during transfer, a release layer 13 is provided, and if necessary, a release layer may be provided, and both the release layer 13 and the release layer are provided. The transferability can be further improved.

  (Release layer) The release layer 13 usually includes a release resin, a resin containing a release agent, a curable resin that is cross-linked by ionizing radiation, etc. In the present invention, a melamine resin is used, which will be described later. By combining with the hologram layer 15 or the hard coat layer 14 to be peeled, the peelability from the release layer 13 is stabilized, and the transferability at the time of transfer can be improved. The release layer 13 is formed by dispersing or dissolving the resin in a solvent, applying and drying the resin by a known coating method such as roll coating or gravure coating, and baking at a temperature of about 150 ° C to 200 ° C. The thickness of the release layer 13 is usually about 0.01 μm to 5.0 μm, preferably about 0.5 μm to 3.0 μm.

  (Peeling layer) The peeling layer provided as necessary includes acrylic resins, vinyl resins, polyester resins, and fiber resins with release resins such as fluorine resins, silicones, and various waxes added or copolymerized. Wax, melamine-based resin, etc., and when both the release layer 13 and the release layer are provided, they may be used in appropriate combination. In this case, the release layer has a function as a protective layer after transfer. Have.

  (Hologram Layer) The hologram layer 15 includes at least an ionizing radiation curable resin, reactive silicone, and polyethylene wax. Preferably, the material of the hologram layer 15 includes (1) an isocyanate having three or more isocyanate groups in the molecule, and (2) at least one hydroxyl group and at least two (meth) acryloyloxy groups in the molecule. Ionizing radiation curable resin containing urethane (meth) acrylate oligomer which is a reaction product of polyfunctional (meth) acrylates having one or polyhydric alcohols having at least two hydroxyl groups in the molecule (this specification) (Referred to as “ionizing radiation curable resin composition M”), reactive silicone and polyethylene wax. More preferably, a (meth) acrylate oligomer is also included and cured. What is necessary is just to harden with ionizing radiation, after apply | coating this composition and drying and shaping | molding the fine unevenness | corrugation relief which expresses a hologram function. The ionizing radiation curable resin is also called a crosslinkable resin, and the same applies to other layers.

  (Ionizing radiation curable resin composition M) The “ionizing radiation curable resin composition M” is a cured product of an ionizing radiation curable resin containing a urethane (meth) acrylate oligomer. The photocurable resin etc. which are indicated by 329031 gazette can be illustrated, and it mentions also in an example. That is, “ionizing radiation curable resin composition M” (1) isocyanates having 3 or more isocyanate groups in the molecule, (2) at least one hydroxyl group and at least two (meth) acryloyloxy groups in the molecule Reaction product of polyfunctional (meth) acrylates having, or (3) polyhydric alcohols having at least two hydroxyl groups in the molecule.

  ((Meth) acrylate oligomer) The (meth) acrylate oligomer may be a heat-resistant oligomer, and examples thereof include trade names of Nippon Synthetic Chemical Co., Ltd .; Purple light 6630B, 7510B, 7630B and the like.

  (Polyethylene wax) Polyethylene wax includes polyethylene resin particles and beads, and is preferably spherical beads. However, when polyethylene wax is added, the foil breakage is reduced, so the amount added is about 0.01 to 10 parts by weight, preferably 0.1 to 5 parts by weight, with respect to 100 parts by weight of ionizing radiation curable resin. And

  (Reactive silicone) Reactive silicone is a reactive silicone that reacts with and binds with resin when cured with ionizing radiation, and is modified by acrylic, methacrylic, or epoxy modification. The ratio on the basis of mass containing silicone is about 0.1 to 10 parts, preferably 0.3 to 5 parts relative to “ionizing radiation curable resin composition M” 100. If it is less than this range, peeling from the press stamper is insufficient at the time of relief molding, and it is difficult to prevent contamination of the press stamper and the moldability is poor. Further, beyond this range, the adhesiveness of the transparent reflective layer to the hologram layer surface is low, and the commercial value is lost by peeling between the hologram layer and the transparent reflective layer. Addition of conventional silicone oil results in poor adhesion to the transparent reflective layer.

  As described above, the hologram layer 15 includes the “ionizing radiation curable resin composition M”, and if necessary, (meth) acrylate oligomer, reactive silicone, and polyethylene wax, thereby providing relief moldability. It has a high light diffraction effect and can also serve as a hard coat function. In particular, by including polyethylene wax, the scratch resistance (scratch resistance) is remarkably improved.

(1) Since the coated film of the hologram layer 15 in a coated state before ionizing radiation curing is not sticky in a finger dry state and can be wound up without blocking, roll-to-roll processing can be performed.
(2) When reactive silicone is included in the hologram layer 15, the relief from the unevenness of the stamper gathers on the coating surface and the moldability is improved, and the relief structure can be easily molded, and ionization is performed after molding. When cured with radiation, the reactive silicone also cures.
(3) By including polyethylene wax, the hologram layer 15 becomes the outermost surface layer after transfer, but the solvent can be used even in extremely harsh environments, for a long period of time, and / or for many repeated uses. It protects the image provided on the transfer member from mechanical friction and abrasion, is hardly scratched and has excellent durability.
(4) Since the hologram layer 15 is in contact with the release layer 13 using the melamine-based resin, it peels between the hologram layer 15 and the release layer 13 and has a stable release property. The foil breakage is good and the occurrence of burrs can be extremely reduced.

  (Formation of hologram layer) The hologram layer 15 contains the above-mentioned ionizing radiation curable resin, (meth) acrylate oligomer, reactive silicone, and polyethylene wax as required, and further, if necessary, a photopolymerization initiator, A plasticizer, stabilizer, surfactant, etc. are added, dispersed or dissolved in a solvent, applied by a known coating method such as roll coating, gravure coating, comma coating, die coating, and dried to form a coating film. It ’s fine. The thickness of the hologram layer 15 is usually about 0.5 μm to 20 μm, preferably about 1 μm to 10 m, and may be applied multiple times.

  (Hologram) Next, on the surface of the hologram layer 15, a predetermined relief structure such as a hologram that exhibits a light diffraction effect is formed and cured. A hologram is a recording of interference fringes due to the interference of light between object light and reference light in an uneven relief shape, such as a laser reproduction hologram such as a Fresnel hologram, a white light reproduction hologram such as a rainbow hologram, There are color holograms utilizing the above principle, computer generated holograms (CGH), holographic diffraction gratings and the like. The relief shape is a concavo-convex shape, and is not particularly limited, and may have a fine concavo-convex shape such as light diffusion, light scattering, light reflection, light diffraction, etc., such as Fourier transform or lenticular lens. , A light diffraction pattern, and a moth eye. Further, although it does not have a light diffraction function, it may be a hairline pattern, a mat pattern, a line pattern, an interference pattern, or the like that expresses a unique glitter.

  As a method for producing these relief shapes, in addition to holograms and diffraction gratings produced using hologram photographing and recording means, holograms produced using an electron beam drawing device based on optical calculations such as interference and diffraction, A diffraction grating can also be mentioned. Also, a relatively large pattern such as a hairline pattern or a line pattern may be a machine cutting method. These holograms and / or diffraction gratings may be recorded single or multiple, or may be recorded in combination. These original plates can be prepared by known materials and methods, and usually, laser beam interference using a glass plate coated with a photosensitive material, using an electron beam drawing apparatus on a glass plate coated with an electron beam resist material. An electron beam drawing method for patterning can be applied.

  (Relief shaping) The relief shape is shaped (also referred to as replication) on the surface of the hologram layer 15. Hologram shaping can be formed by a known method. For example, when recording diffraction gratings or interference fringes of holograms as reliefs of surface irregularities, a master on which the diffraction gratings or interference fringes are recorded in irregularities is pressed. The concave / convex pattern of the original can be duplicated by using it as a mold (referred to as a stamper) and by superimposing the original on the resin layer and heat-pressing both of them with an appropriate means such as a heating roll.

  (Relief Curing) The hologram layer 15 is irradiated with ionizing radiation during or after embossing with a stamper to cure the ionizing radiation curable resin. The ionizing radiation curable resin becomes an ionizing radiation curable resin (hologram layer 15) when cured (reacted) by irradiation with ionizing radiation after the relief is formed. The ionizing radiation may be classified according to the quantum energy of the electromagnetic wave, but in this specification, all ultraviolet rays (UV-A, UV-B, UV-C), visible rays, gamma rays, X-rays, electrons It is defined as including a line. Accordingly, ultraviolet (UV), visible light, gamma rays, X-rays, or electron beams can be applied as ionizing radiation, but ultraviolet (UV) is preferred. An ionizing radiation curable resin that is cured by ionizing radiation may contain a photopolymerization initiator and / or a photopolymerization accelerator in the case of ultraviolet curing, and may not be added in the case of high energy electron beam curing. Can be cured even with thermal energy.

  (Relief pattern) The pattern of the hologram layer 15 is not particularly limited, but is preferably a pseudo-continuous pattern. When creating a press mold (referred to as a stamper) for the pseudo continuous pattern, it is only necessary to match a plurality of small relief plates with high accuracy to make the joints inconspicuous, or to fill the joints with resin. In this way, by using a quasi-continuous pattern, the area can be as large as possible, or preferably the entire surface.

  (Transparent Reflective Layer) Since the transparent reflective layer 17 is provided on the transparent reflective layer 17 on the relief surface of the hologram layer 15 provided with a predetermined relief structure, the reflection and / or diffraction effect of the relief is enhanced. If the reflectance of 15 is higher, it is not particularly limited.

Since the transparent reflective layer 17 has a substantially colorless and transparent hue and its optical refractive index is different from that of the hologram layer, it is possible to visually recognize the brightness of the hologram or the like even though there is no metallic luster. A hologram can be produced. For example, there are a thin film having a higher refractive index than the hologram layer 15 and a thin film having a lower refractive index. Examples of the former include ZnS, TiO ₂ , Al ₂ O ₃ , Sb ₂ S ₃ , SiO, SnO _2. ITO, etc., and examples of the latter include LiF, MgF ₂ , and AlF ₃ . Preferably, it is a metal oxide or nitride, specifically, Be, Mg, Ca, Cr, Mn, Cu, Ag, Al, Sn, In, Te, Fe, Co, Zn, Ge, Pb, Cd , Bi, Se, Ga, Rb, Sb, Pb, Ni, Sr, Ba, La, Ce, Au, and other oxides or nitrides, and the like may be a mixture of two or more thereof. Also, a general light-reflective metal thin film such as aluminum can be used when it has a thickness of 200 mm or less.

  The transparent metal compound is formed on the relief surface of the hologram layer 15 by vacuum such as vapor deposition, sputtering, ion plating, and CVD so that the thickness of the relief layer of the hologram layer 15 is about 10 to 2000 nm, preferably 20 to 1000 nm. It may be provided by a thin film method or the like. Further, a transparent synthetic resin having a different refractive index of light from that of the hologram layer 15 may be used. When the refractive index of the adhesive layer 19 material and the ultraviolet absorbing layer 18 material is sufficiently different, the ultraviolet absorbing layer 18 It can also serve as the transparent reflective layer 17.

  (Adhesive layer) As the adhesive layer 19, a heat-sensitive adhesive that melts or softens when heated and exhibits an adhesive effect can be applied. Specifically, a vinyl chloride resin, a vinyl acetate resin, or vinyl chloride. Examples thereof include vinyl acetate copolymer resins, acrylic resins, and polyester resins. The adhesive layer 19 preferably contains a filler such as microsilica in terms of the ability to break the foil. Further, the resin of the adhesive layer 19 is preferably one having a melting point of 60 to 95 ° C. which melts and adheres at a low temperature of about 95 ° C. and solidifies and adheres at about 60 ° C. When the melting point is less than the above range, the adhesiveness to the transfer medium is insufficient, and the temperature at which the formed image is used is limited. On the other hand, when the melting point exceeds the above range, the transferability becomes insufficient by heating with a thermal head, the foil breakability of the hard coat layer is lowered, and burrs are easily generated.

  The material resin is dissolved or dispersed in a solvent, an additive such as a pigment is added as appropriate, and the layer is applied and dried by a known method such as roll coating, gravure coating, or comma coating, and a layer having a thickness of 1 to 30 μm Get. The hologram transfer foil 1 can be prepared as described above.

  (Print Layer Formation Step) The second step is a print layer 27 formation step for printing secret information on at least one surface of the card substrate 101.

  (Card base material) The card base material 101 is not particularly limited. For example, natural fiber paper, coated paper, tracing paper, plastic film that is not deformed by heat during transfer, glass, metal, ceramics, wood, cloth or Any medium such as a dye-accepting medium may be used, and it may be appropriately selected depending on the application. Further, at least a part of the medium of the card base 101 may be subjected to image, coloring, printing, or other decoration.

  (Printing) The secret information is printed on the card base 101 to form the print layer 27. The print layer 27 is formed on at least one surface of the card base 101, and appropriate secret information (for example, whether or not a lottery is won, lottery number, individual information, serial number, variable number, character data, image, Code, marks, etc.) are printed layers. What is necessary is just to form by well-known printing methods, such as offset printing, gravure printing, and silk screen printing.

  (Peeling layer forming step) The third step is a peeling layer 25 forming step for forming the peeling layer 25 so as to cover the printing layer 27. The release layer 25 is a layer for facilitating scraping of the scratch layer 23, and is formed of, for example, a silicon-based release ink. Further, the periphery of the release layer 25 may cover the scratch layer 23 and the transfer layer 21 described later may be formed larger. The shape of the release layer 25 is not particularly limited, and is rectangular, circular, elliptical, or along the printed layer 27. May be covered.

  (Scratch Layer Forming Step) The fourth step is a scratch layer 23 forming step for forming the concealing scratch layer 23 so that the periphery is inside the periphery of the release layer 25.

  The scratch layer 23 is a layer that can be scraped off with a coin or the like, and is provided so as to cover the print layer 27 in order to conceal the secret information printed on the print layer 27. The scratch layer 23 may be printed with a concealing ink. For example, silver ink or the like obtained by converting metal powder into ink may be formed by a known printing method such as offset printing, gravure printing, silk screen printing, etc., and printing may be performed a plurality of times in order to improve concealment.

  (Transfer process) In the fifth process, the transfer layer 21 is formed by using a transfer stamper whose periphery is inside the periphery of the release layer 25 and outside the periphery of the scratch layer 23. This is a transfer step of transferring the transfer layer 21 onto the surface of the scratch layer 23 by pressing against the scratch layer 23. The transfer process may be a known transfer method, and for example, hot stamping (foil stamping) by hot stamping can be applied. The peripheral edge of the transfer layer 21 is determined by the shape of the stamper, and may cover the print layer printed with appropriate secret information formed by a known printing method. Even if an arbitrary shape such as a rectangle, a circle or an ellipse is transferred Good.

  As shown in FIG. 3, the transfer step includes the scratch layer 23 surface of the laminate having the layer structure of scratch layer 23 / peeling layer 25 / printing layer 27 / card substrate 101, which has been created in the second to fourth steps. Then, after loading the transfer machine so as to face the adhesive layer 18 surface of the hologram transfer foil 1 prepared in the first step, the heated stamper is lowered and pressed, the stamper is raised and simultaneously the hologram transfer foil 1 By pulling up the transfer substrate 11, only the transfer substrate 11 is removed, so that the transfer layer 21 corresponding to the stamper is transferred to the card substrate 101 side.

  However, if the transfer layer 21 is displaced during transfer, that is, if the position of the transfer layer 21 does not match the position of the scratch layer 23, the scratch layer 23 with low designability protrudes from the transfer layer 21, and the appearance is remarkably poor. Become. For this purpose, the transfer stamper may be transferred with the size of the transfer stamper increased so that the periphery of the transfer layer 21 is larger than the periphery of the scratch layer 23. It protrudes from the periphery and is also transferred to the surface of the release layer 25, and the adhesive force is unstable and unevenness is likely to occur on the release layer 25 surface having the peelability.

  Therefore, it is preferable to use a transfer stamper in which the peripheral edge of the transfer layer 21 is slightly larger than the peripheral edge of the scratch layer. More preferably, the peripheral edge of the transfer layer 21 is 0.1 to 2 mm larger than the peripheral edge of the scratch layer 23. That is. When this range is exceeded, the peripheral edge of the transfer layer 21 protrudes larger than the peripheral edge of the scratch layer 23, and unevenness tends to occur on the peripheral edge, resulting in poor appearance. If it is less than this range, it is difficult to align the position of the transfer layer 21 with the position of the scratch layer 23, and it takes a long time for the alignment, resulting in extremely low production efficiency.

  Furthermore, if the transfer speed is increased and the transfer temperature is increased in order to increase the production efficiency of continuous transfer operations, the conventional hologram having a reflective layer of an aluminum thin film will be whitened. However, in the scratch card manufactured using the scratch card manufacturing method for transferring the transfer layer having at least the hologram layer and the transparent reflection layer of the present invention, the transfer temperature is not whitened even if the transfer temperature is increased. Can increase the transfer speed and increase the production efficiency.

  Therefore, in the present invention, even if the peripheral edge of the transfer layer 21 is only about 0.1 to 2 mm larger than the peripheral edge of the scratch layer 23, the transparent hologram can be seen through the transparent hologram when aligning, so the alignment can be easily performed. Can do. Therefore, the scratch card which is excellent in design property and security property in which the scratch layer with low design property is covered with a transparent hologram provides a method for producing a scratch card with high production efficiency and high yield.

  EXAMPLES Hereinafter, although an Example and a comparative example demonstrate this invention further in detail, it is not limited to this.

Example 1
(First Step) Hologram Transfer Foil 10 Preparatory Step A PET film having a thickness of 25 μm is used as the transfer substrate 11, and TCM01 medium (Dainippon Ink Co., Ltd. Melamine resin trade name) The coating liquid was applied after drying to 2 μm, dried, and baked at 180 ° C. for 20 seconds to form the release layer 13.
The surface of the release layer 13 was coated with the following ionizing radiation curable resin composition with a gravure reverse coater so that the thickness after drying was 3 μm and dried at 100 ° C.
・ <Procedure for producing ionizing radiation curable resin composition>
First, “ionizing radiation curable resin composition M” was produced by the following procedure. A reactor equipped with a stirrer, reflux condenser, dropping funnel and thermometer was charged with 206.1 g of ethyl acetate and 133.5 g of isophorone diisocyanate trimer (HULS product, VESTANAT T1890, melting point 110 ° C.), 80 The solution was heated to 0 ° C. and dissolved. After air was blown into the solution, 0.38 g of hydroquinone monomethyl ether, 249.3 g of pentaerythritol triacrylate (product of Osaka Organic Chemical Industry Co., Ltd., Viscoat 300) and 0.38 g of dibutyltin dilaurate were charged. After reacting at 80 ° C. for 5 hours, 688.9 g of ethyl acetate was added and cooled.
The “ionizing radiation curable resin composition M”, a film-forming resin (acrylic oligomer), a reactive silicone, a polyethylene wax, a photopolymerization initiator, and a solvent are blended in the following composition to form an ionizing radiation curable resin. A composition was prepared. The composition part is a component conversion part, and the same applies hereinafter.
・ <Ionizing radiation curable resin composition of hologram layer>
“Ionizing radiation curable resin composition M” 25 parts by mass Methacrylate oligomer (manufactured by Nippon Synthetic Chemical Co., Ltd., trade name Murasaki 6630B) 5 parts by weight of reactive silicone (manufactured by Shin-Etsu Chemical Co., Ltd., trade name X-22-2445) 0. 2 parts by mass Polyethylene wax (average particle size 2.0 μm) 0.3 parts by mass Photopolymerization initiator (Ciba, trade name Irgacure 907) 0.9 parts by mass Ethyl acetate 70 parts by mass Next, to the layer surface, 2 A stamper with a quasi-continuous pattern duplicated from the diffraction grating by the beam interference method by the 2P method is attached to the embossing roller of the duplicating apparatus, and is heated and pressed (embossed) with the opposing roller to form a fine uneven pattern. The relief was shaped. Immediately after shaping, it was cured by irradiating with ultraviolet rays using a high-pressure mercury lamp.
A transparent reflective layer 17 was formed by forming a 50 nm thick titanium oxide thin film on the relief surface of the hologram layer 15 by vacuum deposition.
Next, the following adhesive layer composition was applied to the surface of the transparent reflective layer 17 with a gravure coater so that the coating amount after drying was 1 μm, and dried at 100 ° C. to form an adhesive layer 19.
・ <Adhesive layer composition>
Polyester resin P-170 (manufactured by Nippon Synthetic Chemical Co., Ltd., trade name) 20 parts by mass Microsilica (average particle size 0.5 μm) 1.5 parts by mass Solvent (MEK: toluene = 1: 1) 78.5 parts by mass In this way, a hologram transfer foil 1 having a layer configuration of transfer substrate 11 / release layer 13 / hologram layer 15 / transparent reflective layer 17 // adhesive layer 18 was obtained.
(2nd process) The printing layer 27 formation process which prints secret information The PET base material of thickness 188 micrometers is used as the card | curd base material 101, a number is black ink as secret information, and a card name and an explanatory note are yellow, red, A printing layer 27 was formed by printing by using a multicolor offset printing method using four colors of indigo and black ink.
(Third Step) Release Layer 25 Formation Step for Forming Release Layer 25 Release layer 25 is formed by silk screen printing using a silicone-based ink so as to sufficiently cover the number portion which is the secret information on the printed layer 27 surface. Formed.
(Fourth step) Scratch layer 23 forming step for forming a concealing scratch layer 23 The surface of the release layer 25 is silky with silver ink so as to cover only the numbers that are smaller than the periphery of the release layer 25 and are secret information. The scratch layer 23 was formed by screen printing.
(Fifth step) Transfer step of transferring the transfer layer 21 onto the surface of the scratch layer 23. It comprises the layer structure of the scratch layer 23 / release layer 25 / print layer 27 / card substrate 101 obtained in the second to fourth steps. The laminate and the hologram transfer foil 1 prepared in the first step were loaded into a transfer machine. After the scratch layer 23 surface of the laminate and the adhesive layer 18 surface of the hologram transfer foil 1 are opposed to each other, the heated stamper is lowered and pressed, and then the stamper is raised and simultaneously the transfer substrate 11 of the hologram transfer foil 1. Was pulled up to remove only the transfer substrate 11, and the transfer layer 21 was transferred to the card substrate 101 side to obtain the scratch card of Example 1.
The peripheral edge of the transfer layer 21 was made 2 mm larger than the peripheral edge of the scratch layer 23.

  Example 2 A scratch card of Example 2 was obtained in the same manner as in Example 1 except that the peripheral edge of the transfer layer 21 was made 0.5 mm larger than the peripheral edge of the scratch layer 23.

  (Comparative Example 1) A scratch card of Comparative Example 1 was obtained in the same manner as in Example 1 except that the transparent reflective layer 17 was made of an aluminum thin film having a thickness of 500 nm by vacuum deposition.

  (Comparative Example 2) A scratch card of Comparative Example 2 was obtained in the same manner as in Example 2 except that the transparent reflective layer 17 was made of an aluminum thin film having a thickness of 500 nm by vacuum deposition.

(Evaluation result) The preparation time including alignment took 20 minutes in Example 1, 30 minutes in Example 2, 45 minutes in Comparative Example 1, and 60 minutes in Comparative Example 2. Further, the yield of 10,000 continuous transfer operations was as high as 99% in Example 1, 97% in Example 2, 85% in Comparative Example 1, and 70% in Comparative Example 2.
Furthermore, in Comparative Example 1, as the transfer conditions, the transfer time was fixed at 0.5 seconds and the transfer temperature was good up to 155 ° C., but it was whitened at 160 and 165 ° C., and printed on the card substrate at 170 ° C. Although the ink has peeled off, in Example 1, the transfer conditions are fixed at 0.5 seconds, and even if the transfer temperatures are changed to 155, 160, 165, and 170 ° C., the ink can be transferred well without whitening. I was able to.

It is sectional drawing of the scratch card | curd which shows one Example of this invention. It is sectional drawing of the hologram transfer foil used with the manufacturing method of the scratch card | curd of this invention. It is explanatory drawing explaining the manufacturing method of the scratch card | curd of this invention.

Explanation of symbols

1: Hologram transfer foil 10: Scratch card 11: Transfer base material 13: Release layer 15: Hologram layer 17: Transparent reflection layer 18: Adhesive layer 21: Transfer layer 23: Scratch layer 25: Release layer 27: Print layer 101: Card Base material

Claims (1)

In a method for manufacturing a scratch card, concealing secret information provided on a card substrate, and transferring a transfer layer having at least a hologram layer and a transparent reflective layer to the surface of a scratch layer that can be scratched,
(1) A hologram transfer foil preparation step for preparing a hologram transfer foil having the transfer layer in advance,
(2) a printing layer forming step of printing secret information on at least one surface of the card base;
(3) a release layer forming step of forming a release layer so as to cover the print layer;
(4) a scratch layer forming step of forming a concealing scratch layer so as to have a periphery inside the periphery of the release layer;
(5) Using a transfer stamper whose periphery is inside the periphery of the release layer and outside the periphery of the scratch layer,
The transfer stamper has a peripheral edge inside the peripheral edge of the release layer and outside the peripheral edge of the scratch layer,
The position of the transfer stamper is visually aligned with the scratch layer through the transparent reflection layer and the hologram layer constituting the transfer layer,
By pressing the transfer layer to the scratch layer, the surface of the scratch layer, seen including a transfer step, the transferring the transfer layer,
Periphery before Symbol transferred transfer layer, the manufacturing method of a scratch card, characterized in that 0.1~2mm larger than the periphery of the scratch layer.

Images