JP7358891B2 - card - Google Patents

Description

The present invention relates to card-type media mainly made of plastic sheets among information recording media such as commuter passes, train tickets, admission tickets, prepaid cards, credit cards, cash cards, point cards, various securities, and identification cards. The present invention relates to a card having an improved decorative effect on the edge of the card and an improved anti-counterfeiting effect.

JIS , which stipulates how to test the characteristics of cards. According to the card characteristic testing method in JIS The optical opacity is defined as being greater than 1.3 in the wavelength range of 450 to 950 nm, and greater than 1.1 in the wavelength range of 950 to 1000 nm.

Conventional cards use a core sheet that is a white sheet made by kneading white pigment into a sheet, or a colored sheet made by kneading a non-white coloring agent into a resin, and a transparent oversheet on the front and back sides of the core sheet. A common structure is a stack of layers. The methods used to decorate cards include printing a pattern or other pattern on the surface of a core sheet and covering it with an oversheet, and overprinting, which involves forming a concealing layer on the oversheet and then printing. It's here. However, these are all decorations on the face of the card when viewed from above, and when carrying multiple cards stacked together, it was necessary to check the face of each card. .

On the other hand, a card has been disclosed that has a colored portion on at least part of the side surface around the card (see, for example, Patent Documents 1 and 2). Furthermore, as an improvement plan that omitted the process of separately coloring the side surfaces around the card in Patent Documents 1 and 2, improving productivity and suppressing cost increases, the core layer and oversheet layer were coated with a white sheet or colored. There is a known proposal that provides a card whose end surface appears colored without using a sheet (see Patent Document 3).

The card according to Patent Document 3 has a card base including a laminate in which a front cover sheet made of a transparent resin material, a core sheet made of at least one transparent resin material, and a back cover sheet are laminated in this order, and the card base A light-harvesting fluorescent dye printed portion is formed between the core sheet and the back cover sheet using a printing ink containing a light-harvesting fluorescent dye in a card that emits light incident from the surface of the card base from a side surface of the card base. It is characterized by having been. According to Patent Document 3, when decorating a card using fluorescent dye, it is sufficient to print only in a predetermined area with a printing ink containing a light-harvesting fluorescent dye, thereby avoiding contamination of a series of molding devices with fluorescent dye. It is said that it is possible to deliver cards at low cost and in a short delivery time.

Japanese Patent Application Publication No. 11-34546 Japanese Patent Application Publication No. 2000-301871 Patent No. 5353400

Patent Document 3 discloses that a front cover sheet and a core sheet are made of a transparent resin material, and after absorbing light incident from the front cover sheet in a light-concentrating fluorescent dye printing section, the wavelength is converted and the light is applied to the side surface of the core sheet. Depending on the formulation and hue of the transparent (translucent) ink that forms the pattern printing area on the front cover sheet and core sheet, the light transmission density (OD> 1.1 or 1.3) are often not satisfied. Patent Document 3 aims to improve the decorativeness of cards with unique specifications such as those for shopping malls that do not need to comply with standards such as ISO and JIS.

In the present invention, in a card having a sufficient light transmission density (opacity) in accordance with standards such as ISO and JIS, the decorative effect and anti-counterfeiting effect by fluorescent material or phosphorescent material, which has not been proposed so far, can be achieved. The purpose of the present invention is to propose a card with a configuration in which improvement is realized on the side surface (end surface) of the card.

The card according to the invention comprises:
A decorative layer made of a laminate including a protective layer and an adhesive layer is provided on at least one side surface of a rectangular card made of a laminate including two or more resin layers, and an adhesive layer with a bonding width corresponding to the thickness of the card. A card provided by joining with
The decorative layer is provided only on a part of the side surface of the card,
The decorative layer is characterized in that at least one of the layers contains either a fluorescent material or a luminescent material.

The decorative layer has a structure in which a protective layer, an intermediate layer, and an adhesive layer are laminated in this order, and the content of the fluorescent material in the intermediate layer is preferably 0.5 to 50%.

The average particle size of the fluorescent material is preferably 3 to 5 μm.

The decorative layer has a structure in which a protective layer, an intermediate layer, and an adhesive layer are laminated in this order, and the content of the luminescent material in the intermediate layer is preferably 0.5 to 30%.

The average particle size of the luminescent material is preferably 10 to 20 μm.

A card conforming to standards such as ISO and JIS is provided with a configuration in which the decorative effect and anti-counterfeiting effect of a fluorescent material or a luminescent material are realized on the side surface (end surface) of the card.

FIG. 1 is a plan view showing an example of a card of the present invention. FIG. 1 is a cross-sectional view showing an example of the structure of a card of the present invention. FIG. 3 is a cross-sectional view showing a configuration example in which the decorative layer is in the form of a transfer film. FIG. 3 is a perspective view showing an example of a form in which a decorative layer is formed on the side surface of the card. FIG. 3 is a conceptual diagram schematically showing a method of forming a decorative layer on the side surface of a card base material using a transfer film. An enlarged view showing where a decorative layer is formed on the side of the card.

Embodiments of the present invention will be described below with reference to the drawings. Here, the drawings are schematic, and for convenience of explanation, relationships with plane dimensions, thickness ratios of each layer, etc. may be exaggerated and illustrated in a size different from the actual scale. In addition, the embodiments shown below illustrate configurations for embodying the technical idea of the present invention, and the technical idea of the present invention is that the materials, shapes, structures, etc. of the component parts are It is not something specific. The technical idea of the present invention can be modified in various ways within the technical scope defined by the claims.

<Card>
FIG. 1 is a plan view showing an example of the card of the present invention. A decorative layer 20 is provided along the outer periphery of the rectangular card 10 and on the entire side surface of the card 10.

The decorative layer 20 does not necessarily need to be provided on the entire side surface of the card 10 (the entire circumference of the four sides); for example, the decorative layer 20 may be provided on the top and bottom side surfaces of the card 10 when viewed from above, or on the left and right side surfaces of the card 10. Alternatively, a method of partially providing the card 10 on the side surface of the card 10 may be used. FIG. 4 shows a perspective view of a card 10 having a decorative layer 40 formed only on the bottom side surface of the card base material.

<Card base material>
FIG. 2 is a sectional view showing an example of the structure of the card 10 of the present invention. The card base material 14 is made of a laminate including two or more resin layers. The card base material 14 has a structure in which an oversheet 13 is laminated on both sides of a core sheet 12, and an example is shown in which a printing section 11 is provided between the core sheet 12 and the oversheet.

A decorative layer 20 consisting of an adhesive layer 21, an intermediate layer 22, and a protective layer 23 is provided on the side surface of the card base material 14. At least one of the decorative layers 20 contains either a fluorescent material or a luminescent material.

Although the core sheet 12 is illustrated as having a one-layer structure, the core sheet 12 does not necessarily have to be a single layer, and may be composed of two or more layers. Further, an IC inlet including an IC chip, an antenna, etc. may be included.

When incorporating an IC inlet, any known IC inlet can be used, such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyimide (PI), paper, synthetic paper, etc. It is possible to use a device in which an IC chip and an antenna electrically connected to each other are provided on an IC inlet support made of the following.

Here, the antenna is made by etching or punching metal foil such as aluminum or copper into a pattern, or by applying conductive ink by known means such as screen printing, flexographic printing, gravure printing, or inkjet printing. Examples include those provided in a pattern or those formed by winding welding.

The core sheet 12 can be made of any conventionally known material, including paper, polyethylene terephthalate resins such as polyethylene terephthalate (PET) and PET-G, polyvinyl chloride resin, and acrylonitrile-butadiene-styrene. Copolymers, polycarbonate resins, polyacrylic acid ester resins, polymethacrylic acid ester resins, styrene-methyl methacrylate copolymers, polylactic acid resins, polyolefin resins, and other arbitrary resins alone or in composites, alloys, and blends It can be used as a body.

Even if various additives are added to these resins, such as conventionally known pigments and extender pigments such as titanium oxide, calcium carbonate, barium sulfate, and white lead white, as well as heat stabilizers and ultraviolet absorbers, there will be no problem. do not have.

The oversheet 13 is made of a resin that essentially has light transmittance, and specifically, polyethylene terephthalate resins, polyethylene naphthalate resins, polyvinyl chloride resins, polyester resins, polycarbonate resins, polyacrylate resins, polyester resins, etc. Synthetic resins such as methacrylic acid ester resins, polystyrene resins, acrylonitrile-butadiene-styrene copolymers, styrene-methyl methacrylate copolymers, polylactic acid resins, polyvinyl alcohol resins, triacetyl cellulose resins, natural resins, or their derivatives. Composites, alloys, blends, etc. of modified resins alone or in combination can be used.

The oversheet 13 can be subjected to addition of various conventionally known additives such as heat stabilizers, ultraviolet absorbers, plasticizers, and antistatic agents, and special treatments such as matte treatment.

Further, there is no problem even if a functional layer such as a layer having laser printing properties or an adhesion imparting layer is separately provided between the core sheet 12 and the oversheet 13.

Such a functional layer may be provided in the form of a sheet, or may be provided as a coating layer or a printed layer.

Although the printing section 11 is provided between the core sheet 12 and the oversheet 13, the printing section 11 is not limited to this, and may be provided on any layer of the laminate 10. For example, an overprint method may be used in which a printed portion is formed on the outermost surface of the card 10 via a concealing layer or the like.

The printing section 11 can be formed using a known printing technique such as an offset printing method, a screen printing method, a flexographic printing method, or a gravure printing method, or an on-demand printing technique such as an inkjet method, or a wet or dry electrostatic photography method. can.

The card base material 14 formed as described above may be provided with a magnetic recording layer or the like on at least one of its front and back surfaces.

<Decorative layer>
The decorative layer 20 is composed of layers including at least an adhesive layer 21 and a protective layer 23, and at least one of the layers contains either a fluorescent material or a luminescent material. As shown in FIG. 2, an intermediate layer 22 may be provided between the adhesive layer 21 and the protective layer 23.

In this embodiment, at least one of a fluorescent material and a luminescent material is dispersed and blended in the intermediate layer 22. Alternatively, at least one of a fluorescent material and a phosphorescent material may be dispersed and mixed into the ink forming the printing layer (described later). Fluorescent materials are materials that absorb light energy from the outside, such as ultraviolet rays and visible light, and convert it into light, and are classified into YAG (yttrium aluminum garnet) based, yellow, red, green, and blue colors (wavelengths). We have a lineup of materials such as TAG (terbium aluminum garnet), sialon, and BOS (barium orthosilicate). Many phosphorescent materials are composed of inorganic materials that are made by adding a small amount of rare earth elements such as europium or dysprosium to a mother crystal of strontium aluminate or calcium aluminate.

By including the fluorescent material and luminescent material in the decorative layer 20, it has an eye-catching effect compared to the decorativeness of printed images using printing inks containing ordinary dyes and pigments or high-luminance inks with reflective properties. and the anti-counterfeiting effect is improved. In particular, when viewing in a dark place, the eye-catching effect due to the luminescence of the phosphorescent material, and the improvement in the eye-catching effect due to the coloring and luminescence of the fluorescent material when exposed to black light (ultraviolet light) are remarkable. .

By providing the intermediate layer 22 and adding a fluorescent material or a luminescent material into the intermediate layer 22, the fluorescent material is added to the adhesive layer 21 for bonding the decorative layer 20 to the side surface of the card base material 14 having a thickness of 1 mm or less. Alternatively, it is possible to avoid a decrease in adhesive strength due to the addition of a luminescent material and allow the adhesive layer 21 to perform its original adhesive function. This also applies to maintaining the scratch resistance of the protective layer 23 by avoiding adding a fluorescent material or a phosphorescent material to the protective layer 23, which is responsible for providing scratch resistance when the card 10 is used. .

When a fluorescent material or a phosphorescent material is added only to the intermediate layer 22, the appropriate content of the fluorescent material in the intermediate layer 22 is 0.5 to 50%. This is because if it is less than 0.5%, the decorative and anti-counterfeiting effects achieved by using the fluorescent material will be reduced, and if it is more than 50%, the adhesion of the intermediate layer 22 with the adhesive layer 21 and the protective layer 23 will be reduced. . For the same reason, it is appropriate for the content of the luminescent material in the intermediate layer 22 to be 0.5 to 30%.

The average particle size of the added fluorescent material is preferably 3 to 5 μm. Further, the average particle diameter of the luminescent material to be added is preferably 10 to 20 μm.

The decorative layer 20 is produced in the form of a transfer film 30 as shown in FIG. 3, and is formed by thermal transfer to the side surface of the card base material 14. The decorative layer 20 is not limited to the form of a transfer layer transferred from the transfer film 30, and may be in the form of a sticker having a pressure-sensitive adhesive layer, for example, but may be formed on the side surface of the card base material 14 with a thickness of 1 mm or less. When forming a narrow width, a thermal transfer foil is preferable in order to transfer a finely patterned transfer layer to the side surface of the card base material 14.

In thermal transfer, when a transfer film is heated in a pattern with a hot roll or a thermal head, the transfer layer (protective layer, intermediate layer, adhesive layer) is locally activated in the areas corresponding to the heating pattern, and the transferred material ( transfer to the card base material). In the form of a sticker, it is difficult to cut the decorative layer into narrow widths, and the decorative layer is formed by sandwiching the edges including the side surfaces of the card base material.

An example of the layer structure in the case of forming the transfer film 30 will be explained. The support 26 used for the transfer film 30 includes paper such as capacitor paper, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polypropylene (PP), polyvinyl chloride (PVC), and polycarbonate (PC). , triacetyl cellulose (TAC), polyimide (PI), and the like can be used, and among them, polyethylene terephthalate (PET) can be preferably used in consideration of ease of handling and cost.

The support body 26 may be subjected to various treatments such as antistatic treatment, adhesion enhancement treatment, and mold release treatment.

The thickness of the support 26 is preferably 1 μm to 100 μm, and more preferably about 3 μm to 50 μm in consideration of ease of handling.

The protective layer 23 is a hard layer that can protect the decorative layer 20 from damage even when the anti-counterfeit card 10 is inserted and slid into various reader/writers when the finally obtained card 10 is actually used. It is preferable to have a coating function, and it is required to have abrasion resistance, scratch resistance, slipperiness, etc., and also to be able to be easily peeled off at the interface with the support 26 when transferring the decorative layer 20 to the side surface of the card base material 14. is required.

As the material used for the protective layer 23, thermoplastic resin, thermosetting resin, radiation curable resin, etc. can be used.

When using a thermoplastic resin as the protective layer 23, examples include (meth)acrylic resin, polyester resin, polyvinyl chloride resin, polycarbonate resin, cellulose resin, etc.; It is not limited.

When using a thermosetting resin as the protective layer 23, examples include combinations of various resins such as various polyol resins, epoxy resins, phenol resins, and melamine resins, and curing agents compatible with these resins. can do.

When a radiation-curable resin is used as the protective layer 23, for example, monomers, oligomers, or resins having a functional group such as a radically polymerizable ethylene group, or a functional group such as a cationically polymerizable epoxy group are used. Examples include combinations of monomers, oligomers, resins, and polymerization initiators.

These various resins may be used alone, or two or more types of resins may be laminated or mixed to form a composite structure.

It is desirable that a filler is added to the protective layer 23, and examples of the filler include silica, talc, diatomaceous earth, calcium carbonate, and fine resin particles, and silica can be preferably used.

By adding a filler to the protective layer 23, the mechanical strength of the protective layer film can be increased, and the cuttability of the protective layer 23 during transfer of the decorative layer 20 can be improved.

The amount of filler added is preferably in the range of 0.5% to 40% by mass based on the resin content of the protective layer. This is because if it is less than 0.5%, sufficient film strength cannot be obtained, and if it exceeds 40%, the protective layer 23 becomes brittle and cracks are likely to occur.

The protective layer 23 also contains various waxes such as animal waxes, vegetable waxes, mineral waxes such as montan wax, natural waxes such as petroleum waxes such as paraffin wax, synthetic waxes such as polyethylene wax, modified waxes, and zinc stearate. Various additives such as fatty acid metal salts, higher fatty acids, fillers made of fluorine resins and silicone resins, lubricants such as silicone oil, polymerization inhibitors, polymerization accelerators, photosensitizers, heat stabilizers, and light stabilizers. may be added.

The thickness of such a protective layer 23 is preferably 1 μm to 10 μm or less. This is because if the film thickness is less than 1 μm, sufficient abrasion resistance and scratch resistance cannot be exhibited, and if it exceeds 10 μm, when the decorative layer 20 is thermally transferred from the decorative transfer film 30, This is because the cutting ability of the material decreases and burrs are more likely to occur.

The intermediate layer 22 can be provided for the purpose of imparting a decorative effect, an anti-counterfeiting effect, and improving the film strength of the decorative layer 20. Specifically, the intermediate layer 22 is made of any suitable material such as thermoplastic resin, thermosetting resin, radiation-curing resin, etc. materials can be used.

When using a thermoplastic resin as the intermediate layer 22, for example, polyester resin, (meth)acrylic resin, urethane resin, polycarbonate resin, vinyl resin such as vinyl chloride, polyamide resin, epoxy resin, cellulose, etc. Various resins such as resins can be arbitrarily selected.

When a thermosetting resin is used as the intermediate layer 22, examples include various polyol resins, epoxy resins, phenol resins, melamine resins, etc., and materials in which curing agents corresponding to the various resins are added. However, it is not necessarily limited to these.

When using a radiation-curable resin as the intermediate layer 22, examples include radical polymerization type monomers, oligomers, or resins, or a mixture of cationic polymerization type monomers, oligomers, or resins, and a polymerization initiator. be able to.

A coloring material can be added to such an intermediate layer 22, and coloring materials include, for example, pearl pigments, fine powders of cholesteric liquid crystal cured films, granular or scale-like metal powders, and carbon black as a representative example. Examples include various pigments, dyes, and various fluorescent materials, but the present invention is not necessarily limited to these.

The intermediate layer 22 has aluminum, silver, gold, copper, or nickel formed on its surface, that is, the side in contact with the adhesive layer 21, by a vapor deposition method such as a vacuum evaporation method, a sputtering method, or a chemical vapor deposition method (CVD method). A metal thin film such as the like may also be provided.

Further, the intermediate layer 22 may be formed as a generally uniform film, but may also be provided as a printed layer on which arbitrary patterns and characters are formed.

When providing a printing layer, a conventionally known printing method can be used, for example, any printing method such as a gravure printing method, an offset printing method, a screen printing method, a flexographic printing method, etc. can be appropriately selected and used. .

The adhesive layer 21 is a layer for adhering the card base material 14 and the decorative layer 20, and any material can be used as long as it has adhesive properties with the card base material 14, but thermoplastic resin is preferably used. It can be used for.

Examples of thermoplastic resins include polyester resins, urethane resins, epoxy resins, vinyl acetate resins, vinyl chloride-vinyl acetate copolymer resins, various (meth)acrylate copolymer resins, and ethylene-vinyl acetate copolymer resins. Various resins such as resins, ionomer resins, styrene-butadiene copolymer resins, acrylonitrile-butadiene copolymer resins, and various rubbers can be arbitrarily selected depending on the material of the card base material 14. The materials can be used singly or in combination as composites, alloys, blends, etc.

A dye may be added to the adhesive layer 21, and examples of the dye include pigments such as carbon black, dyes, and fluorescent materials.These materials may be added as necessary. One or more optionally selected materials can be added.

Various extender pigments such as silica, calcium carbonate, talc, and fine resin particles may be added to the adhesive layer 21 as necessary within a range that does not cause a decrease in adhesive strength.

The thickness of the adhesive layer 21 is preferably about 0.3 μm to 3 μm. This is because if the thickness is less than 0.3 μm, sufficient adhesion cannot be obtained, and if it exceeds 3 μm, the cuttability of the decorative layer 20 decreases and burrs are likely to occur.

<Transfer formation of decorative layer onto card>
FIG. 5 is a conceptual diagram schematically showing a method of forming the decorative layer 20 on the side surface of the card base material 14 using the transfer film 30.

The transfer film 30 is unwound from the unwinding section 31 and is placed opposite to the side surface of the card base material 14, which is the object to be transferred, on which the decorative layer 20 is to be provided.

The size of the card 10 in accordance with JIS Then, the card is conveyed in an upright state and nipped by the hot roll 51 at the contact position with the transfer film 30, thereby transferring the transfer layer with a width of 0.76 mm corresponding to the card thickness.

At this time, the card base materials 14 may be installed one by one and transferred sequentially, but a plurality of card base materials 14 may be installed one on top of the other (perpendicular to the paper surface in FIG. 5). It is desirable that the decoration layer 20 is transferred to the side surface of the card base material 14 using a hot roll 51. By adopting such a method, productivity can be improved.

Advantages of adopting a thermal transfer method as a method for forming the decorative layer 20 on the side surface of the card base material 14 include the following advantages in addition to being advantageous in terms of pattern formation in narrow areas. be able to.

In the manufacturing process of the card base material 14, an integrated card base material sheet is formed by sandwiching and laminating the core sheet 12 provided with the printed portion 11 between two oversheets, and then using a cutting die to form an integrated card base material sheet. A card base material 14 is formed by punching out a card shape.

At this time, since the side surface of the card base material 14 has fine irregularities formed by the punching blade, when a printing method is adopted as a method for decorating the side surface, fluorescent light contained in the printing ink must be used. Since the particles of the material or luminescent material follow the unevenness of the side surface, the ink containing the fluorescent material or luminescent material adheres unevenly to the side surface of the card base material 14, causing the printed pattern to appear uneven. Become.

On the other hand, when the transfer method is adopted, only the adhesive layer 21 follows the fine irregularities on the side surface of the card base material 14, and the intermediate layer 22 etc. are not affected by the irregularities. 22 can be uniformly attached to the side surface of the card base material 14.

As shown in FIG. 6, the particle size of the fluorescent material or luminescent material dispersed and mixed in the intermediate layer 22 constituting the decorative layer 20 is large, and the intermediate layer 22 and the protective layer 23 have irregularities that follow the particle shape. In the case of the surface shape, since the surface of the protective layer 23 is non-flat, damage caused by mechanical contact is limited to the convex portions, and damage does not occur in the concave portions. Therefore, scratches are reduced compared to when the protective layer 23 is flat. In addition, since the area of the light-emitting/coloring area caused by the fluorescent material or the phosphorescent material increases and is visually visible, even if there is a damaged area in the decorative layer 20, the hiding effect is high and it is hard to notice.

<Preparation of transfer film 30>
As the support 26 for the transfer film 30, a PET film (Lumirror 25T60;
Toray Industries, Inc.) was prepared, and a coating solution for the protective layer 23 (described below) was applied onto this PET film using a gravure coater to form the protective layer 23 so that the film thickness after drying was 5.0 μm.

Next, a coating solution for the intermediate layer 22 (described below) was applied onto the protective layer 23 using a gravure coater so that the intermediate layer 22 had a thickness of 1.5 μm after drying.

Thereafter, a coating liquid for the adhesive layer 21 (described below) was applied on the intermediate layer 22 using a gravure coater so that the adhesive layer 21 had a dry film thickness of 1.0 μm, thereby obtaining a transfer film 30.

<Coating liquid for protective layer 23>
Acrylic resin 30 parts by mass Silica filler 3 parts by mass Toluene 40 parts by mass Methyl ethyl ketone 40 parts by mass Methyl isobutyl ketone 20 parts by mass

<Coating liquid for intermediate layer 22>
Acrylic resin 70 parts by mass Fluorescent pigment FZ-2002 Green (manufactured by Shinroihi) 30 parts by mass Methyl ethyl ketone 70 parts by mass Toluene 30 parts by mass

<Coating liquid for adhesive layer 21>
Polyester resin 5 parts by mass Vinyl chloride-vinyl acetate copolymer resin 20 parts by mass Methyl ethyl ketone 40 parts by mass Toluene 40 parts by mass

<Card production>
A white vinyl chloride sheet with a thickness of 600 μm is used as a core sheet, and transparent vinyl chloride sheets with a thickness of 80 μm are used as an oversheet on both sides of this core sheet, which are overlapped and laminated by applying heat pressure using a heat press machine. A card base sheet was obtained.

Thereafter, the above card base material sheet was cut into a card shape using a cutting die conforming to ID-I specified in JIS X 6301 to obtain a card base material 14.

A decoration layer 20 consisting of a protective layer 23, an intermediate layer 22, and an adhesive layer 21 is applied to the side surface of the obtained card base material 14 using a test hot roll transfer machine (manufactured by Navitas Co., Ltd.) using the previously prepared transfer film. was transferred onto the side surface of a card base material 14 having a thickness (transfer width) of 0.76 mm to obtain a card sample. The card sample sufficiently satisfied the light transmission density (OD>1.1 or 1.3) required by JIS X 6301 (2.0 or more).

<Evaluation method>
The card sample obtained as described above was swiped (contacted and slid) 2000 times on a magnetic reader (MJR-350-VCOM manufactured by Welcom Design Co., Ltd.), and then the decorative layer provided on the side surface was The situation was visually observed.

<Evaluation results>
Even after 2000 swipes, the decorative layer 20 was not damaged or worn to expose the color of the white core sheet of the card.

From the above results, it has become possible to easily provide the decorative layer 20, which has an extremely high design quality and a high anti-counterfeiting effect, on the side surface of the card base material 14, and also in terms of the durability of the obtained card. We were able to provide a card with enough durability to withstand 2000 swipes (assuming 5 years of use).

<Comparative example>
Various changes were made to the formulation of the coating liquid for the intermediate layer 22 in the transfer film 30, and the transfer was formed on the side surface of the card base material 14 in the same manner as above, and the obtained card samples were evaluated in the same manner as above. Table 1 shows the evaluation results when the blending amount and particle size of the fluorescent material were variously changed, and Table 2 shows the evaluation results when the blending amount and particle size of the phosphorescent material were variously changed. The blending amounts of the fluorescent material and the luminescent material are the solid content ratios excluding the solvent content.

When the blending amount of the fluorescent material deviated from the index range of 0.5% to 50%, it was confirmed that the swipe durability decreased and the eye-catching effect was also lacking. (Comparative Examples 2 and 3) The same was true when the particle size of the fluorescent material deviated below the index of 3 to 5 μm. (Comparative Examples 1 and 3) When the blending amount of the fluorescent material is larger than the index, the adhesion between the upper and lower protective layers and the adhesive layer of the intermediate layer is poor, the transfer film 30 is not formed, and the card base material 14 However, it has not been possible to transfer and form a decorative layer. (Comparative example 4)
When the blending amount of the phosphorescent material was less than the index range of 0.5 to 30%, a decrease in swipe durability was confirmed, and the eye-catching effect was also lacking. (Comparative Example 5) When the amount exceeds the range of the index, and when the particle size of the luminescent material is larger than the index of 10 to 20 μm, the adhesion with the upper and lower protective layers and adhesive layer of the intermediate layer is poor, and the transfer film 30 was not formed, and the decoration layer could not be transferred and formed on the card base material 14. (Comparative Examples 6 and 7)

DESCRIPTION OF SYMBOLS 10... Card 11... Printing part 12... Core sheet 13... Oversheet 14... Card base material 20... Decorative layer 21... Adhesive layer 22... Intermediate layer 23... Protective layer 26... Support body 30... Transfer film 31... Unwinding part 32 ... Winding section 40 ... Decorative layer 51 ... Heat roll

Claims (6)

A decorative layer made of a laminate including a protective layer and an adhesive layer is provided on at least one side surface of a rectangular card made of a laminate including two or more resin layers, and an adhesive layer with a bonding width corresponding to the thickness of the card. A card provided by joining with
The decorative layer is provided only on a part of the side surface of the card,
A card characterized in that at least one of the decorative layers contains either a fluorescent material or a phosphorescent material. 1. The decorative layer has a structure in which a protective layer, an intermediate layer, and an adhesive layer are laminated in this order, and the content of the fluorescent material in the intermediate layer is 0.5 to 50%. Card listed. 3. The card according to claim 1, wherein the fluorescent material has an average particle size of 3 to 5 μm. 1. The decorative layer has a structure in which a protective layer, an intermediate layer, and an adhesive layer are laminated in this order, and the content of the luminescent material in the intermediate layer is 0.5 to 30%. Card listed. 5. The card according to claim 1, wherein the luminescent material has an average particle size of 10 to 20 μm. The card according to any one of claims 1 to 5, characterized in that it satisfies a light transmission density (OD: opacity) required by JIS X 6301.