JP6035731B2 - Card having writing area and method for manufacturing the same - Google Patents

Description

  The present invention relates to a card having a writing area, and more particularly to a card having a writing area that does not have a convex shape, has writing characteristics, and is easy to write and does not easily disappear, and a manufacturing method thereof. .

  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. “PET” is an abbreviation, functional expression, common name, or industry term for “polyethylene terephthalate”.

  (Background Art) Conventionally, a card such as a membership card, a cash card, a credit card, and other certificates are generally shown in FIG. 4 as an area for entering a name of a user such as a card. Thus, a writing panel (corresponding to the writing area of the present invention) such as a so-called sign panel or silk panel is provided, and desired entries are displayed on the writing panel by writing with a writing tool. For the sign panel of the writing panel, a sheet member for the sign panel is attached to a part of the area on the card base, and for the silk panel, white ink is applied to a part of the area on the card base. It was provided by silk screen printing. However, when the above sign panel or silk panel is provided on the card substrate, in any case, a part of the card surface becomes convex, and the smoothness of the card surface is lost. And since the surface is smooth, the pen tip is difficult to write when writing with a ballpoint pen, etc.If the card surface is rubbed during use, entries written with oily magic etc. will rub off and easily disappear is there. Also, for direct sublimation transfer printing, which prints directly on the surface of the card, the print area is limited, sticks to or adheres to the thermal head, and is rubbed with the thermal head. There are problems such as.

  Furthermore, for full-surface printing by retransfer, there is a problem that writing aptitude is deteriorated because ink and a retransfer layer are also deposited on the writing panel. In addition, since a part of the writing panel etc. on the surface of the card is convex, the convex part is rubbed or caught on other objects, so that the sign panel or silk panel from the card base There is a problem in that there is a high risk of disappearance. A card with a writing area is easy to write in the writing area even if you write with a writing instrument such as a ballpoint pen. It is hard to fall off or disappear, and even when printing with a sublimation transfer method with a card printer, the writing area is scraped or the card surface is partially convex, which limits the printing area. It is demanded not to affect.

JP 2002-307875 A

  (Prior Art) Conventionally, in a card in which at least a printing layer and a transparent protective layer are sequentially provided on a white card base, an area where no printing layer is provided is provided on a part of the card base, and the card starts from the area. There is known a card having a writable writing area formed so that a base material surface can be seen (see, for example, Patent Document 1). However, since the surface of the writing panel (corresponding to the writing area of the present invention) is the same as the surface of the card and the surface of the writing panel is smooth, the pen tip slips when writing with a ballpoint pen or the like. If the surface of the card is rubbed during use, entries written with oil-based magic rub off and easily disappear.

  In order to solve the above-described problems, the present inventors have made extensive studies and have completed the present invention. Its purpose is easy to write even if you write with a writing instrument such as a ballpoint pen in the writing area, and even if you write with oil-based magic etc., even if the card surface is rubbed in use, the entry will not rub off or disappear easily, In addition, the writing area that does not adversely affect the printing area, such as the writing area being shaved or a part of the card surface being convex, even when printing with a sublimation transfer method, etc., on a card printer. And a method for manufacturing the same.

In order to solve the above-mentioned problem, a card having a writing area according to the invention of claim 1 of the present invention is a card having a writing area that can be written with a writing instrument.
The card is laminated with a printed layer and a transparent protective layer in this order on a card substrate made of white,
By providing the printed layer only in the area excluding the area corresponding to the writing area, a card is formed with a writing area in a state where a white solid portion can be visually observed on the card surface,
The saw concave than the height of the height the surface of the card of the writing area, and the surface roughness Ra 1~5μm defined in JIS-B-0601, average length Rsm is fine irregularities is 200~800μm The card has a writable writing area characterized by being formed .
Method for producing a card having a writing area according to the second aspect of the present invention is a method for producing a card having additionally serial possible writing area,
Process transparency protective layer peelably provided on the transfer substrate, viewed print layer and adhesive layer in the region excluding the region corresponding to the writing area and to prepare a thermal transfer foil which are laminated in this order When,
Wherein the surface of the adhesive layer of the thermal transfer foil is placed onto the surface of the card substrate, and a transfer step of peeling and removing the transfer substrate after adding heat and pressure, is transferred to the card substrate Irradiating the surface of the writing area of the transparent protective layer with a laser beam to form fine irregularities;
It is a manufacturing method of the card | curd which has the writable area | region which can be recorded additionally characterized by comprising.

According to the first aspect of the present invention, the writing area is white of the card base, the writing area in a state where the white plain portion can be seen from the card surface is formed, and the color written with the writing implement is displayed more clearly. The writing area is easy to write even with a writing tool such as a ballpoint pen, and even if the entry is written with oil-based magic or the like, even if the card surface is rubbed, the entry will not rub off or disappear easily. Even when printing with a sublimation transfer method with a card printer, the writing area is scraped, and the card surface is partially convex so that there is no adverse effect such as limiting the printing area. .
According to the present invention of claim 2, by arbitrarily setting the region without the printed layer at the stage of producing a thermal transfer foil, it is possible to determine the additionally recordable writing area freely, if necessary By creating thermal transfer foils for various writing areas and transferring them to the card base, cards with writing areas that can be added to different areas for each card can be easily created. With this equipment and technology, production efficiency is good and mass production can be achieved at low cost.

It is sectional drawing of the card | curd which has an area for writing which shows one Example of this invention. FIG. 2 is a cross-sectional view when an entry is written in the writing area of FIG. 1. It is a perspective view of the card | curd which has an area for writing which shows one Example of this invention. It is a perspective view of the card | curd which has the conventional writing area | region.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  (Card having a writing area) The card 10 having a writable writing area 21 according to the present invention has a writing area 21 that can be filled in with a writing tool, as shown in FIG. 10 is a card substrate 11 in which a printing layer 15 and a transparent protective layer 17 are laminated in this order, and the printing layer 15 is provided only in a region excluding the region corresponding to the writing region 21, thereby The writing area 21 in a state where the white plain portion can be visually observed is formed, and the height of the writing area 21 is recessed from the height of the surface of the card 10 having the writing area 21. In addition, you may provide the adhesive bond layer 13 for improving the adhesive force between the card | curd base material 11 and the printing layer 15. FIG. Further, fine irregularities are formed on the surface of the writing area 21 by laser processing or embossing. Then, in the writing area 21 that can be additionally written, as shown in FIG. 2, a card is displayed by writing an entry 23 with a writing instrument. Since it is not printed on the lower surface side of the portion where the entry 23 is written, the white card base 11 can be seen from the card surface side, and the entry 23 can be clearly seen against the white background. FIG. 3 is a perspective view of FIG. 2, which shows a card 10 having a writing area 21 additionally written, and the height of the writing area 21 is recessed from the height of the surface of the card 10 having the writing area 21.

  (Conventional Card) FIG. 4 shows a conventional card having a sign panel 21 'which is a writable writing area. The sign panel is higher than the card surface, and the sign panel has a smooth surface. For this reason, when writing with a ballpoint pen or the like, the tip of the pen slips and it is difficult to write, and when the card surface is rubbed during use, the entries written with oil-based magic rub off easily.

  (Manufacturing method) The manufacturing method of the card | curd which has a writable area of the invention of this application is (1) The area | region corresponding to the said transparent protective layer 17 and the said writing area | region 21 which were provided so that peeling was possible on the transfer base material. A step of producing a thermal transfer foil in which the printing layer 15 and the adhesive layer 13 are laminated in this order only in the excluded region; and (2) the surface of the adhesive layer 13 of the thermal transfer foil is the surface of the card substrate. And (3) a surface of the writing area 21 of the transparent protective layer 17 transferred to the card substrate by laser. And a process of forming fine irregularities by processing or embossing.

  (Manufacturing Process of Thermal Transfer Foil) Next, a manufacturing method of the card 10 having a writing area will be described including the materials in the order of processes. In the first step, (1) the printing layer 15 and the adhesive layer 13 are laminated in this order only in a region excluding the transparent protective layer 17 provided on the transfer substrate so as to be peelable and the region corresponding to the writing region 21. This is a process for producing a thermal transfer foil.

  (Thermal transfer foil) First, the printing layer 15 and the adhesive layer 13 are laminated in this order only in a region excluding the transparent protective layer 17 provided on the transfer substrate so as to be peelable and the region corresponding to the writing region 21. To produce a thermal transfer foil. Although not shown, the thermal transfer foil has a structure in which a transfer substrate / release layer or release layer / transparent protective layer 17 / printing layer 15 / adhesive layer 13 are sequentially laminated.

In addition, although the transparent protective layer 17 on the transfer base material and the printing layer 15 are indispensable in the thermal transfer foil, the transparent protective layer 17 on the transfer base material is peeled off or separated from the release layer or the release layer. May be omitted if possible. Moreover, when the adhesive layer 13 is provided on the card base 11 in the configuration of the thermal transfer foil, the adhesive layer 13 may not be provided on the thermal transfer foil.

  (Transfer Substrate) The transfer substrate is not particularly limited as long as it has heat resistance and mechanical strength that can withstand the heat and pressure during transfer. For example, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate. Polyester resins such as phthalate, polyethylene terephthalate-isophthalate copolymer, polyamide resins such as nylon (trade name) 6 and nylon (trade name) 66, polyolefin resins such as polypropylene, cyclic polyolefin resins such as polynorbonene, etc. Is applicable. 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. The transfer substrate 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 strength. The thickness of the substrate film is usually about 6 to 200 μm, preferably 12 to 50 μm. Usually, polyethylene terephthalate having a thickness of 12 μm is optimal.

  (Peeling layer or mold release layer) When the transparent protective layer 17 is not peelable from the transfer substrate, the transfer substrate is optionally provided with a transfer group for improving the peelability on the transparent protective layer 17 side. A release layer or a release layer may be provided as a component of the material so that the transparent protective layer 17 can be peeled off. When the transfer substrate is peeled and removed during transfer, the release layer is separated from the transfer substrate and remains on the transparent protective layer 17 side when the transfer substrate is peeled, and the release layer is peeled and removed as part of the transfer substrate. Refers to the layer to be applied.

  (Peeling layer) As the peeling layer, for example, an acrylic resin, a cellulose resin, a melamine resin, a silicone resin, a urethane resin, a polyolefin resin, a wax or the like, or a mixture containing these is used.

  (Release layer) As the release layer, a release resin, a resin containing a release agent, a curable resin that is crosslinked by ionizing radiation, and the like can be applied. The releasable resin is, for example, a fluorine resin, silicone, melamine resin, epoxy resin, polyester resin, acrylic resin, or fiber resin. The resin containing the release agent is, for example, an acrylic resin, vinyl resin, polyester resin, or fiber resin obtained by adding or copolymerizing a release agent such as fluorine resin, silicone, or various waxes. is there. The curable resin that is cross-linked by ionizing radiation is, for example, a resin containing a monomer / oligomer having a functional group that is polymerized (cured) by ionizing radiation such as ultraviolet (UV) or electron beam (EB).

  The release layer or release layer can be formed by adding the above resin and additives as necessary, dissolving and / or dispersing in a solvent, applying by roll coating or gravure printing, drying, or aging, or It may be crosslinked by irradiating with ionizing radiation.

  The thickness of the release layer or release layer is usually about 0.05 μm to 5 μm, preferably about 0.5 μm to 3 μm, because the purpose of the layer is not surface protection. If the thickness is too thick, the effect of the transparent protective layer 17 underneath is reduced. Therefore, the thinner the better, the better. However, if the thickness is 0.1 μm or more, better film formation is obtained and the peeling force is stabilized.

  (Transparent protective layer) The transparent protective layer 17 is a layer for improving surface properties such as abrasion resistance and solvent resistance, and is preferably a cross-linked acryl polyol resin composition with a cross-linking agent. As the cross-linking agent, isocyanate compounds and silane coupling agents can be applied, but the transfer force is appropriate when the thermal transfer foil is transferred to the card to be transferred and the transfer substrate is peeled off, and changes with time. Therefore, it is preferable to use a two-component curable resin in which an acrylic polyol is crosslinked using a silane coupling agent as a crosslinking agent.

  (Acrylic polyol) The acrylic polyol is not particularly limited and may be selected from conventionally known ones according to the use and required physical properties. Among the polyols, a transfer product excellent in surface properties and weather resistance can be obtained by using acrylic polyol. In addition, acrylic polyol is, for example, (meth) acrylic acid, methyl (meth) acrylate, ethyl (meth) acrylate, (meth) acrylic acid-n-propyl, isopropyl (meth) acrylate, (meth) acrylic acid. 1 type or 2 types or more of (meth) acrylic acid alkyl ester such as n-butyl, (meth) acrylic acid isobutyl, (meth) acrylic acid octyl, (meth) acrylic acid-2-hydroxyethyl, (meta It is a polyol having a plurality of hydroxyl groups obtained by copolymerizing a hydroxyl group-containing acrylic monomer such as 2-hydroxypropyl acrylate, 2-hydroxy-3-phenoxypropyl (meth) acrylate, or the like. In addition, (meth) acrylic acid means acrylic acid or methacrylic acid.

  As the silane coupling agent, a known silane coupling agent having an amino group, a vinyl group, an epoxy group, a mercapto group, a chloro group or the like in addition to the alkoxy group may be used. For example, γ-aminopropyltriethoxysilane, γ-methacryloxypropyltrimethoxysilane, γ-methacryloxypropylmethyldimethoxysilane, γ-methacryloxypropyldimethylmethoxysilane, γ-methacryloxypropyltriethoxysilane, γ-methacryloxy Propyldimethylethoxysilane, γ-acryloxypropyltrimethoxysilane, γ-acryloxypropylmethyldimethoxysilane, γ-acryloxypropyldimethylmethoxysilane, γ-acryloxypropyltriethoxysilane, γ-acryloxypropylmethyldiethoxysilane , Γ-acryloxypropyldimethylethoxysilane, vinyltriethoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-mercaptopropyltrimethoxysila Etc. In addition, the addition amount of the silane coupling agent as a crosslinking agent with respect to acrylic polyol is about 5-15 mass parts of silane coupling agents with respect to 100 mass parts of polyols.

  The transparent protective layer 17 may be composed of only the two-component curable resin composed of the acrylic polyol and the silane coupling agent, but various additives may be added as necessary. For example, when a filler of metal oxide particles is added as an additive, the wear resistance can be greatly improved. Examples of the metal oxide particles as the filler include metal oxides such as aluminum, titanium, silicon, zirconium, and magnesium. Specifically, for example, alumina such as α-alumina. Such metal oxide particles having an average particle diameter of 2 to 3 μm, a particle size distribution having a minimum value of 0.01 μm and a maximum value of 6 μm, for example, can provide good wear resistance. This is preferable.

  In addition, the shape of the metal oxide particles is spherical or nearly spherical, such as a spheroid, which has good coating suitability (no streaks, etc.), and when a thermal transfer sheet is molded, it is transparently protected during molding. It is preferable that the layer does not easily crack or break. As the shape, other shapes such as scales and polygons may be used. Moreover, although the addition amount of a metal oxide particle changes with required physical properties, it is about 0.1-30 mass parts with respect to 100 mass parts of said 2 liquid curable resins. As additives other than the metal oxide particles, known additives such as fillers such as extender pigments, lubricants such as waxes, ultraviolet absorbers, light stabilizers, and colorants are appropriately used.

  The transparent protective layer 17 is formed by adding the above resin, a crosslinking agent and, if necessary, a solvent, and dissolving and / or dispersing in a solvent, and printing methods such as gravure printing and silk screen printing, gravure coating, The coating method such as roll coating may be applied, dried, aged and crosslinked. Moreover, the thickness of the transparent protective layer 17 should just be suitably set according to a use, a required physical property, etc., Usually, about 1-100 micrometers, Preferably it is 3-20 micrometers.

  (Printing layer) The printing layer 15 is a layer in which a pattern or the like is formed by a forming method and material using conventionally known printing such as gravure printing, silk screen printing, and offset printing. A region corresponding to a region where a writing region 21 that can be additionally written to the card substrate 11 is provided on the print layer 15 when the transparent protective layer 17 and the print layer 15 are transferred onto the card substrate 11 using a thermal transfer foil. Only the portion is provided with a region portion where the printing layer 15 is not provided. That is, even when the transparent protective layer 17 and the print layer 15 are transferred onto the card substrate 11 using the thermal transfer foil, the white portion of the card substrate 11 can be visually observed from the card surface.

  The ink for forming the printing layer is composed of a vehicle made of a binder, a colorant such as a pigment or a dye, and various additives appropriately added thereto, like a general ink. As the resin used for the binder, for example, an acrylic resin, a vinyl chloride-vinyl acetate copolymer, a polyester resin, a cellulose resin, a polyurethane resin, or the like, or a mixture containing these is used. Colorants include titanium white, carbon black, petal, yellow lead, ultramarine blue and other inorganic pigments, aniline black, quinacridone, isoindolinone, phthalocyanine blue and other organic pigments, titanium dioxide coated mica foil powder, etc. Pigments or other dyes are used.

  (Adhesive layer) The adhesive layer 13 is a layer for transferring and adhering the transfer layer composed of the transparent protective layer 17 and the printing layer 15 to the card substrate 11 as a transfer target, and is a known thermoplastic resin, cured. A conductive resin or the like may be used. For example, one or a mixture of thermoplastic resins such as vinyl acetate resin, vinyl chloride-vinyl acetate copolymer, acrylic resin, thermoplastic polyester resin, polyamide resin, ionomer, and chlorinated polyolefin. Used as

  The adhesive layer 13 is appropriately added various additives to the above resin, dissolved and / or dispersed in a solvent, and printing methods such as gravure printing and silk screen printing, and coating methods such as gravure coating and roll coating, Apply and dry. Although there is no restriction | limiting in particular as the thickness of the adhesive bond layer 13, Usually, about 1-50 micrometers, Preferably it is 3-20 micrometers. Note that the adhesive layer 13 can be omitted when the binder resin itself has sufficient adhesive force with the card substrate 11 as a transfer target and is formed on the entire surface.

  (Transfer step) The second step is (2) a transfer in which the surface of the adhesive layer 13 of the thermal transfer foil is placed on the surface of the card substrate 11 and the transfer substrate is peeled off after applying heat pressure. It is a process. By placing the adhesive layer 13 surface of the thermal transfer foil on the surface of the card substrate 11 and applying heat pressure from the transfer substrate, the transfer substrate is peeled off from the release layer or the release layer and removed, The printing layer 15 and the transparent protective layer 17 can be laminated on the card substrate 11, and the foil can be easily cut off and transferred easily.

  The method for transferring to the transfer target is not particularly limited. For example, hot stamping by hot stamping (foil stamping), entire surface or stripe transfer by hot roll, thermal printer (thermal printing head) ( A known method such as a thermal transfer printer) can be applied. It is good also as a card | curd by cut | disconnecting one sheet | seat at a time after transferring the whole surface with a heat roll with the large-sized shape which imposed the some card | curd.

  In the present invention, by arbitrarily setting a region where the printing layer 15 is not provided at the stage of producing the thermal transfer foil, the writable writing region 21 can be freely determined, so that various writing can be performed as necessary. By producing the thermal transfer foil of the area 21 and transferring it to the card substrate 11, it is possible to easily produce the card 10 having the writing area 21 that can be additionally written in a different area for each card. With equipment and technology, production efficiency is good and mass production is possible at low cost.

  (Card base material) The card base material 11 is not particularly limited, but specifically, polyvinyl chloride resin, vinyl acetate resin, vinyl chloride-vinyl acetate copolymer resin, butadiene resin, acrylonitrile-butadiene-styrene. Examples thereof include a copolymer resin, a polycarbonate resin, a polyamide resin, a polyester resin, a (meth) acrylic resin, or a resin composed of a plurality of these, and papers. The card base 11 is white, and there is an effect that the entry 23 can be clearly displayed when a sign or the like is written on the writable writing area 21. However, the color is not necessarily limited to white, and may be any color that can read at least the entry 23 in relation to the color of the writing instrument.

  (Concavity and convexity forming step) The third step is (3) the surface of the writing area 21 of the transparent protective layer 17 transferred to the card substrate 11 is dented or finely uneven by laser processing or embossing. Is a step of forming.

  (Unevenness) The surface of the writing area 21 of the transparent protective layer 17 is recessed, or the surface of the writing area 21 of the transparent protective layer 17 is made fine unevenness. The concavo-convex shape may be random or regular, and is not particularly limited. However, the surface roughness of the concavo-convex shape is an arithmetic average roughness Ra in accordance with JIS-B-0601 of about 0.5 to 10 μm. The average length Rsm of the curved elements is about 100 to 1000 μm, preferably 200 to 800 μm, and the maximum cross-sectional height Rt is about 0.5 to 50 μm, preferably 1 to 30 μm. . By forming such fine irregularities, it is easy to write in the writing area 21 even with a writing tool such as a ballpoint pen. In addition, even if the entry is written with oil-based magic or the like, and the card surface is rubbed for use, the entry is not easily scraped off or lost. Further, in order to provide fine irregularities, the height of the writing area 21 is recessed from the height of the surface of the card, so that the writing area is scraped even when printing by a sublimation transfer method or the like with a card printer. Because it does not, it is more excellent in writing ability and surface durability when using the card.

(Embossing)
For embossing to form fine irregularities, a mold or roll having reverse irregularities of the irregularities described above is prepared and heated and pressed in a flat plate or roll form by a known embossing method.

(Laser processing)
Examples of the laser beam used for laser processing for forming fine irregularities include gas lasers such as He—Ne laser, Ar laser, CO ² laser, and excimer laser, solid lasers such as YAG laser, Nd—YVO 4 laser, and semiconductor lasers. And dye laser. Of these, YAG laser and Nd-YVO4 laser are preferable. For example, when a specific wavelength such as a laser having a wavelength of 1062 nm is used as the laser beam, an infrared absorber that absorbs light of the wavelength is added to the transparent protective layer 17 within a range where the white color of the base is visible. You may keep it. The laser may be either a pulse laser or a continuous wave laser, and if the beam diameter is narrow, the writing area 21 may be scanned.

  When the surface of the transparent protective layer 17 in the writing area 21 is irradiated with a laser beam, fine irregularities are formed on the surface by foaming or blistering. If the laser beam is too strong, the color may be black, so adjust accordingly.

  The card 10 having the writable writing area 21 of the present invention thus produced has a writing area 21 that can be filled in with a writing tool, as shown in FIG. The printing layer 15 and the transparent protective layer 17 are laminated in this order on the card base 11 made of white, and the printing layer 15 is provided only in the area excluding the area corresponding to the writing area 21, thereby providing a white color on the card surface. The writing area 21 is formed so that the plain portion can be visually observed, and the height of the writing area 21 is recessed from the height of the surface of the card 10 having the writing area 21. The surface of the transparent protective layer 17 in the writing area 21 is formed with fine irregularities by laser processing or embossing, and as shown in FIG. 2, the writing area is additionally written by writing the entry 23 with a writing instrument. Card 10 having 21. Since it is not printed on the lower surface side of the portion where the entry 23 is written, the white card base 11 can be seen from the card surface side, and the entry 23 can be clearly seen against the white background. Since the surface of the writing area has fine irregularities, even if you write with a writing instrument such as a ballpoint pen, the ball on the tip of the pen is easy to write without slipping. It is easy to write and has excellent writing characteristics. In addition, when rubbed during use, the ink is soaked into the fine irregularities on the surface of the writing area, so it is difficult to disappear. Furthermore, since there are no convex portions on the card surface, there is no adverse effect such as the writing area being scraped or the printing area being restricted when printing with a card printer.

  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 or mass% of solid content conversion.

  (Example 1) First, a PET film having a thickness of 25 μm is used as a transfer substrate, and an additive is added to the melamine-based resin, dissolved and / or dispersed in a solvent, and then applied by a roll coating method. Then, drying and aging to form a release layer having a thickness of 1.5 μm, and using the acrylic polyol having a silane coupling agent as a crosslinking agent on the surface of the release layer, applying it by a roll coating method, drying and aging A transparent protective layer 17 having a thickness of 4 μm is formed, and only a portion of the area corresponding to the area where the writeable area 21 can be additionally written is printed on the surface of the transparent protective layer 17 by using a general-purpose urethane-based four-color ink. In order to prevent the formation of the coating layer, a gravure printing method is used to form a printing layer 15, and an additive is added to the polyester resin on the surface of the printing layer 15, and dissolved and / or dispersed in a solvent. A thermal transfer foil in which a transfer substrate / release layer / transparent protective layer 17 / printing layer 15 / adhesive layer 13 are laminated in order, which is applied by a coating method and dried to form an adhesive layer 13 having a thickness of 5 μm. Created. Next, the adhesive layer 13 of the thermal transfer foil is overlaid on the surface of the card substrate 11 mainly composed of a polyvinyl chloride resin of credit card size in the credit card specification, and hot stamping (foil stamping) by thermal stamping is performed. ) Method, after heating and pressing at a temperature of 120 ° C. for 0.5 seconds, the transfer substrate and the release layer were peeled off and removed. The surface of the exposed transparent protective layer 17 of the card is embossed under the conditions of an embossing roll temperature of 50 ° C. and a line speed of 10 m / min, so that the writing area 21 is recessed by 0.2 mm. A card 10 having a region 21 was obtained.

  (Example 2) The surface of the surface of the transparent protective layer 17 of the exposed card obtained in the same manner as in Example 1 was embossed under the conditions of an embossing roll temperature of 50 ° C and a line speed of 10 m / min. Surface irregularities having a thickness Ra of 2 μm, a spacing Sm between convex portions of 500 μm, and a maximum cross-sectional height Rt of 10 μm were formed to obtain a card 10 having the writing area 21 of Example 2.

  (Example 3) Using the Nd-YVO4 laser on the surface of the exposed surface of the transparent protective layer 17 of the exposed card obtained in the same manner as in Example 1, a laser irradiation speed of 400 mm / sec is applied to the writing area 21. A card having a writing area 21 of Example 3 by forming a surface irregularity shape having an arithmetic average roughness Ra of 5 μm, an interval Sm between convex portions of 200 μm, and a maximum cross-sectional height Rt of 30 μm. 10 was obtained. The surface roughness was measured using a surface roughness meter Surfcoder SE-30K (trade name, manufactured by Kosaka Laboratory Ltd.) as a measuring instrument.

(Evaluation) When the writing area 21 of the card 10 having the writing area 21 of Examples 1 to 3 was written on the surface with a ballpoint pen and oil-based magic ink (registered trademark) as the entry 23, Example 1 However, Examples 2 and 3 were easy to write, and the names of Examples 1 to 3 were clearly displayed. Further, after the steel wool No. 0000 was reciprocated 10 times under a load condition of 20 kPa (200 g / cm ² ) on the surface of the card on which this name was displayed, the degree of damage was visually observed. It was not recognized, entry 23 was not scraped off and disappeared, and the durability was excellent. Furthermore, a face photograph was printed by a sublimation transfer method with a card printer in an area other than the writing area 21, but the entry 23 and the writing area 21 were not scratched or scraped, and the entry 23 did not disappear.

  (Industrial Applicability) The main use of the card 10 having the writing area 21 of the present invention is as a card such as a membership card, cash card, credit card, and other certificates, etc. It is easy to write even if you write with a writing instrument, and it is difficult for the items to be worn off or erased during use. However, there is no particular limitation as long as it is an application that requires a writing area that can be filled in with a writing instrument.

10: Card having a writing area 11: Card base material 13: Adhesive layer 15: Printing layer 17: Transparent protective layer 21: Writing area 21 ': Sign panel 23: Information

Claims (2)

In a card with a writing area that can be filled in with a writing instrument,
The card is laminated with a printed layer and a transparent protective layer in this order on a card substrate made of white,
By providing the printed layer only in the area excluding the area corresponding to the writing area, a card is formed with a writing area in a state where a white solid portion can be visually observed on the card surface,
The saw concave than the height of the height the surface of the card of the writing area, and the surface roughness Ra 1~5μm defined in JIS-B-0601, average length Rsm is fine irregularities is 200~800μm A card having a writable writing area characterized by being formed . A method of manufacturing a card having additionally serial possible writing area,
Process transparency protective layer peelably provided on the transfer substrate, viewed print layer and adhesive layer in the region excluding the region corresponding to the writing area and to prepare a thermal transfer foil which are laminated in this order When,
Wherein the surface of the adhesive layer of the thermal transfer foil is placed onto the surface of the card substrate, and a transfer step of peeling and removing the transfer substrate after the addition of heat and pressure,
Irradiating the surface of the writing area of the transparent protective layer transferred to the card substrate with a laser beam to form fine irregularities;
A method for manufacturing a card having a writable writing area characterized by comprising:

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