JP2003132319A - Ic card, its manufacturing method, and ultraviolet curing ink - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an IC card having characteristics such as durability of an external appearance in using the card, a sliding performance in a carrier system, yellowing prevention performance, and label adhesion and to provide its manufacturing method and ultraviolet curing ink for the IC card. SOLUTION: This IC card is provided with an IC chip 5 and an antenna 6 communicating with a transmitter connected to the IC chip as necessary and, at least, a part of the surface of the IC card is provided with an ultraviolet curing resin layer 7 formed by curing the ultraviolet curing ink, which is mainly composed of urethan acrylate, epoxy acrylate, and aliphatic glycol acrylate. The silicone compound can be included in the ultraviolet curing ink to its upper limit. The contents of the three components are preferably within 15-65 pts.wt. per ink 100 pts.wt. When the ultraviolet curing resin layer is provided on the base material surface, screen printing and offset printing are preferable.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an IC card which is equipped with an IC chip and an antenna for connecting the IC chip to communicate information with a communication device, as the case requires, and is capable of contact or non-contact communication. More specifically, a specific ultraviolet curable resin layer is provided on a part or the entire front and back surfaces of the IC card to impart abrasion resistance, glossiness and friction characteristics to the IC card, and An IC card capable of being adhered and firmly adhered to, such as a hologram, a magnetic stripe, a sign panel, an adhesive label or the like provided with an image such as a logo mark by printing on the front or back of the IC card Is.

[0002]

2. Description of the Related Art In recent years, cash cards, bank cards,
Cards such as entertainment cards such as transportation cards and golf cards are widely used. These cards are roughly classified into a simple card without a recording layer, a magnetic card having a magnetic recording layer (including a magnetic stripe), I
It can be classified into a contact type IC card mounted with a C chip and a non-contact IC card mounted with an IC chip.

Of these, a magnetic card having a magnetic recording layer is used in cash cards such as VISA cards, prepaid cards and tickets used in transportation such as JR, and in entertainment facilities such as televisions and golf practice machines. It is used in various fields such as prepaid cards. This magnetic recording layer is roughly classified into a case where a magnetic recording layer is provided on the entire surface of a base material and a case where a magnetic stripe is attached to a plastic base material. The former is generally called a so-called magnetic card, and the latter is so-called a magnetic stripe card. Such a magnetic recording layer is
Barium ferrite, acicular γ-iron oxide, cobalt-coated γ-iron oxide, etc. are used as the recording material, and the so-called coercive force is used because of the ease of rewriting the recording and the degree of influence on the magnetic field. It is used according to the application, taking into account the characteristics that are easy to use. Barium ferrite is generally used in J-thru and telephone cards, and γ-iron oxide is used in cards having cards and magnetic stripes. When performing magnetic recording on such a magnetic material, a so-called minute electromagnet called a magnetic head is used, and the magnetic field is changed by changing the magnetic field according to the recording density in the card transport direction or in the opposite direction. Make a record. The information to be magnetically recorded is encoded and usually encrypted, but the magnetic recording itself is based on the above-described magnetization pattern of the magnetic material, and it is predetermined that this pattern is transferred or tampered with. This can be done relatively easily by using a magnetic head. For this reason, forgery and alteration of these magnetic cards has become a major social problem.

Further, although a magnetic card encodes and encrypts information and records it, there is a problem that the amount of information is limited because the recording pattern itself is limited by the length of the card. On the other hand, in the IC card, since the information is recorded in the memory area of the IC chip, it is possible to record and store the information amount several times to several thousand times that of the magnetic recording by increasing the memory capacity. For this reason, there is an increasing trend to use IC cards in fields where magnetic cards have been conventionally used. In Europe and the United States, contact-type IC cards have already spread as cash cards. The contact type IC card is generally manufactured by a method in which an IC module having a connection terminal is embedded in a plastic base material by making a hole and fixed with an adhesive. The advantages of contact IC cards are
In addition to the large amount of information, the communication with the communication device is performed via the contact terminal, which has the advantages of stable communication, being less susceptible to noise, and having less misreading and misidentification.

On the other hand, the non-contact IC card has an IC chip and an antenna connected to it, and communicates with a communication device via electromagnetic waves. Therefore, there is a merit that communication with a communication device (reader / writer) is possible even if the IC card is stored in a container such as a wallet or bag. However, electromagnetic waves are absorbed by the shield material such as metal,
There is a drawback that the communication becomes unstable in the reflected situation, and in the extreme case, the communication cannot be performed at all. Also,
There is also a drawback that it is easily affected by noise from external electric appliances. Such contact-type and contact-type IC cards can encrypt and record information, and even if the content of the information can be detected by some method, its meaning cannot be easily read, and thus the security is high. ,
In the future, there will be a movement to operate in various fields such as the Basic Resident Register and licenses.

As described above, the IC card originally manages and operates the information of the IC chip, but in order to impart the function as a card, offset printing or sublimation fusion transfer is performed on the surface thereof. In many cases, the cards are printed to identify the card. However, when the card surface is a printing layer or a printing layer, the thickness of the recording layer itself is thin, and the plastic as the base material is usually a polyester material such as PET, so that the surface is scratched during repeated use. There is a problem in that, in the extreme case, the printed surface is scraped off due to abrasion, and the displayed image becomes unreadable. Furthermore, it is necessary to record information when the card is issued as an IC card (encoding)
However, since the cards are usually conveyed one by one, a certain degree of suitability for sliding is required. Also, when printing or printing on the surface of the card, it is desirable that the surface of the card is white and plain. For example, when top-coating the surface of the card, consideration should be given to not turning the underlying white plastic surface yellow. is necessary.

Cards are provided with card security, holograms are attached to enhance aesthetics,
A magnetic stripe layer may be provided in order to provide information such as the ID number of the IC card separately from the IC chip, or an autograph column called a sign panel may be provided to clearly indicate the owner of the card. Further, in some cases, it may be necessary to print a facial photograph or the like on a sublimation transfer label and attach the label to a card. for that reason,
On the surface of the card, improve the adhesion with these adhesives,
It was necessary to firmly fix the label and the like.

[0008]

SUMMARY OF THE INVENTION In the present invention, such contact and non-contact IC cards are provided with characteristics such as durability of appearance when the card is used, slipperiness in a carrier system, and yellowing-free property. Another object of the present invention is to provide an IC card in which a label having an adhesive layer such as a hologram, a magnetic stripe, and a sign panel is firmly attached. It is also an object of the present invention to provide a method for producing such an IC card, and to provide an ink for surface application which can impart the above characteristics to the surface of the IC card. It is an issue.

[0009]

According to the present invention, a unique UV-curable resin layer is provided on at least a part of the front surface and / or the back surface of an IC card. This makes it possible to protect the surface of the card firmly, prevent scratches, and make the slipperiness suitable. Further, the ultraviolet curable resin layer is almost transparent, and the color of the underlying white PET material or the like is less likely to be discolored. In addition, holograms and magnetic stripes,
It is possible to strengthen the adhesion with labels having an adhesive such as sign panels.

The characteristics of such an ultraviolet curable resin layer are as follows.
This is mainly due to the resin composition. In the present invention, by properly blending a urethane acrylate, an epoxy acrylate, and an aliphatic glycol acrylate as the ultraviolet curable resin, it has become possible to exhibit its function. Further, as an auxiliary agent, an additive generally added to the ink can be used depending on the purpose.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION I of the present invention incorporating an IC chip
The C card is a contact type IC card in which a communication terminal connected to the IC chip is on the surface of the card, a non-contact type IC card in which an IC chip and an antenna capable of communicating by electromagnetic waves are arranged, and a contact type It is classified into a combination card having both functions of a contactless IC card and a non-contact type IC card. In the present invention, in order to simplify the explanation, a non-contact IC is used.
Although the embodiments will be described focusing on the card, the IC card of the present invention is not limited to the non-contact IC card.

First, the IC chip used in the IC card has a general IC (integrated circuit) form. That is, a semiconductor is formed into a required shape on a silicon wafer by a technique such as lithography and doping to form an electronic circuit. After that, it is ground to a required thickness and subjected to a dicing process to form an IC chip. The IC chip used as an IC card has a connection terminal,
In this, a connection terminal called a bump is provided at a connection portion on the IC by a method such as plating. Such IC chips for IC cards are manufactured and marketed by Infineon, Motorola, Sony, Fujitsu, Matsushita Electric Industrial, etc., for example. As an example, Infineon Co., Ltd. uses MCC1-1-
2. The contact type IC chip module is commercially available with a product number such as M2.2.

Such an IC chip alone is a so-called
It is called a bear chip and the IC chip is exposed. Therefore, it is easily damaged when a local external force such as a pen tip is applied. Therefore, the IC chip is connected to a metal plate having a connection terminal of a predetermined shape called a lead frame by a method such as wire bonding, a thermosetting resin such as an epoxy resin is sealed inside a mold of a predetermined shape, and heat solidified. By doing so, an IC module having increased strength may be formed and used. Such a module is also called a packaged chip, and is commercially available, for example, from Infineon or the like under a product number such as MCC2-2-1.

In the present invention, the IC chip for the above IC card is used. In the non-contact IC card, the connection terminal of this IC chip is connected to the antenna. Usually, the antenna is 10 μm to 800 μm thick, such as PET or polyimide.
m base material of copper or aluminum material etched into a predetermined pattern, copper wire having a diameter of 50 μmφ to 300 μmφ formed in a predetermined shape on the base material in a winding form, silver particles To 50% by weight as solid content
A conductive paste ink containing 90% by weight is arranged on a substrate in a predetermined shape by a method such as screen printing, and the like.

The shape of the antenna is often a loop antenna shape, and the number of turns thereof is 1 to several tens of turns, and is appropriately selected depending on the application. In the non-contact IC card, a contact type (a card and a reader / writer are in close contact for communication) and a proximity type (communication distance is generally several cm depending on the communication distance.
~ Tens of cm), near type (communication distance: tens of cm to several m),
It is classified as a microwave type (communication distance: 1 m to several m). The frequency of the carrier wave of the electromagnetic wave for communication is also limited, and for example, in the proximity type, it is often 13.56 MHz. The number of turns and line width of the antenna are designed so as to resonate with this electromagnetic frequency. A base material on which such an IC chip and an antenna are arranged is called an inlet.

As a method of connecting the IC chip to the antenna terminal, for example, a wire bonding method, a flip chip bonding method (FCB method) or the like is commonly used. The wire bonding method is a method of connecting a terminal (bump) of an IC chip and an antenna terminal with a gold wire. In the FCB method, first, ACF (anisotropic conductive film) or ACP (anisotropic conductive paste) is connected to an antenna terminal, an IC chip is placed thereon, and the IC chip terminal and the antenna terminal are heated and pressed. By doing so, the connection is fixed. Although ACF and ACP have little conductivity themselves, they contain fine particles of silver or gold inside, and when these conductive particles are heated and pressed, they adhere to each other at the connection part and become conductive. There is. These anisotropic conductive materials are
For example, it is commercially available from Hitachi Chemical Co., Ltd. and Sony Chemical Company.

It becomes possible to communicate with a communication device in the state of an inlet in which an IC chip and an antenna are joined.
For use as an IC card, a protective material is often provided on the front and back surfaces of the inlet in order to protect the IC chip and the antenna. As a method of providing such a protective material, a base material such as PET (polyethylene terephthalate) or PEN (polyethylene naphthalate) is attached to the front surface and back surface of the inlet via a heat-fusible adhesive material.
A method of laminating by heat and pressure molding, PETG (a type of non-crystalline modified polyester resin, which is marketed under the name PETG, is also referred to as PETG in this specification. To be exact, at least ethylene glycol, terephthalate (Defined as a modified polyester resin obtained by polymerizing three components of acid and 1,4-cyclohexanedimethanol)
For example, a method of laminating with an inlet material that has a heat fusion property at a relatively low temperature (about 70 ° C) by heat and pressure molding, put the inlet in a mold, and encapsulate ABS (acrylonitrile butadiene styrene) resin. Examples include a so-called injection molding method in which heating and curing are performed. In the method of bonding the base materials, the layer structure of the base material is not limited to the inlet and the base material on the front and back surfaces thereof, and a multilayer method of bonding a plurality of base materials is often performed. In the contact type IC card, a method is used in which an IC module is embedded in a hole (counterbore hole) formed in a base material and fixed with a curable resin such as an epoxy resin, and a vinyl chloride resin is generally used as the base material. Often. A polyester resin having a melting point or a softening point of 60 ° C. to 150 ° C. is mainly used as an adhesive for joining by a bonding method. As such an IC card of the present invention, for example, as shown in FIG. 1, the first base material 1 is provided on the front surface and the back surface of the first base material 1 provided with the IC chip 5 and the antenna 6.
Ultraviolet rays formed by stacking a sheet-shaped second base material 2 and a third base material 3 with a heat-melting adhesive layer 4 interposed therebetween, and curing the ultraviolet curable ink of the present invention. An example is one in which the curable resin layer 7 is provided on each of the surfaces of the second base material 2 and the third base material 3.

Generally, the inlet is often handled as a sheet having a predetermined shape. For example, even when the FCB method is used for bonding, the IC chip is positioned and bonded to the sheet-shaped antenna material. Therefore, in many cases, the front and back substrates and adhesives to be attached to the inlet are also formed into a sheet having a predetermined size. In this way, by laminating the inlet and an appropriate base material, a predetermined thickness,
Normally, the ISO standard is set to 740 μm to 840 μm, and the thin telephone card is set to 420 μm to 480 μm. This sheet is punched into a predetermined size by a punching machine, for example, a size of about 54 mm × 86 mm in the case of JIS II type, and made into a card.

In the present invention, by providing an ultraviolet curable resin layer on the front and back surfaces of the card thus punched, the card is provided with abrasion resistance, slipperiness and transparency,
It is characterized in that it has strong adhesiveness and bondability with holograms, magnetic stripes, sign panels, adhesive labels printed by sublimation transfer printing, etc., which will be described later. Usually, the base material used for the surface of the card is a plastic material such as PET, PETG, ABS resin, etc., and a predetermined pattern is printed with an offset sheet-fed printing machine or the like before pasting it as a joining sheet with the inlet described above. Then, the ultraviolet curable ink of the present invention is printed on at least a part of the surface base sheet by a method such as screen printing.

The above-mentioned UV-curable ink in the present invention contains urethane acrylate, epoxy acrylate, and aliphatic glycol acrylate as main components, and the content of these UV-curable inks is 100% urethane acrylate. 15 per part by weight
To 65 parts by weight, the epoxy acrylate is in the range of 15 to 65 parts by weight per 100 parts by weight of the ink, and the aliphatic glycol acrylate is in the range of 15 to 65 parts by weight per 100 parts by weight of the ink. preferable. Of course, after the UV curing, these acrylates are mixed and polymerized, so that the UV curable resin layer in the IC card of the present invention contains the above-mentioned three constituent components in the above-mentioned proportions. It is composed of components that are bound in a (high) molecular state. In the present invention, each component described above is present as a monomer, an oligomer, or a prepolymer in the ink in an ink state such as a screen ink before the ultraviolet curing. The urethane acrylate used in this state includes yellowing type aromatic urethane acrylates and non-yellowing type aliphatic urethane acrylates, preferably non-yellowing type aliphatic urethane acrylates, and as a commercial product, for example, CN-made by Sartomer
929, CN-924, CN-944, CN-945,
CN-953, CN-961, CN-962, CN-9
63, CN-964, CN-965, CN-966, C
N-968, CN-980, CN-981, CN-98
2, CN-983, CN-984 and Ebecryl 230, 240, 250, 260 manufactured by Daicel UCB.
270, 280, 290, 4853, 4835, 488
1, 4883, 8402, 8800, 4866 and Actlane 200, 210, 230, 2 manufactured by ACROSS.
50, 251, 260, 270, 276, 280, 29
0 and the like. Examples of the epoxy acrylate include CN104, CN111, manufactured by Sert Mao Co.,
CN112, CN115, CN116, CN117, C
N118, CN119, CN120, CN121, CN
124, CN136 and Ebecr made by Daicel UCB
yl 600, 608, 640, 3700, 3404,
3600, 3703, 3200, 3500, 3201,
3702, 3800, 6229, 629, 639, 36
03, 616 and Actilane 30 manufactured by ACROSS
0, 310, 320, 330, 340 and the like. The aliphatic glycol acrylate has the general formula A-O.
A compound represented by (RO) _n -A, in which A represents an acryloyl group, R represents an aliphatic hydrocarbon residue, and n represents a number of 1 or more. Specific examples of such compounds include, as n = 1 acrylates, ethylene glycol diacrylate, propylene glycol diacrylate, 1,3-butylene glycol diacrylate, 1,4-butanediol diacrylate, and 1,6. -Hexanediol diacrylate, 1,9
-Nonanediol diacrylate, neopentyl glycol diacrylate, cyclopentanyl diacrylate, etc., and acrylates in which n is greater than 1 include diethylene glycol diacrylate, triethylene glycol diacrylate, polyethylene glycol (chain length unit 200) Examples thereof include acrylate, polyethylene glycol (chain length unit 400) diacrylate, polyethylene glycol (chain length unit 600) diacrylate, dipropylene glycol diacrylate, tripropylene glycol diacrylate, polypropylene glycol diacrylate and the like. It is extremely preferable that the above urethane-based acrylate, epoxy-based acrylate and aliphatic glycol acrylate are blended in the ink in an amount corresponding to the above content.

The action of each of these acrylate components will be described below. First, urethane-based acrylate imparts transparency to the resin layer after curing with ultraviolet light and has little odor after curing,
It has the effect of strengthening the adhesiveness of adhesives such as holograms and magnetic stripes, imparting flexibility when molding the IC card sheet, and preventing cracks due to swelling of the IC chip portion. Epoxy acrylate is
It strengthens the adhesiveness with the adhesive after UV curing, makes the friction coefficient suitable and provides slipperiness, accelerates the curing during UV curing, and forms the sheet during sheet forming (usually metal such as stainless steel). Plate is used) has the effect of preventing sticking with, aliphatic glycol acrylate,
It has an effect of imparting adhesiveness with an adhesive agent after being cured by ultraviolet rays, little odor after curing, imparting flexibility at the time of forming a sheet, and preventing cracking due to swelling of an IC chip portion. In the present invention, the respective components have an overlapping effect, and the IC card formed by making these components into ink by adjusting them according to the above-mentioned formulation will exhibit a very balanced function.

The UV-curable ink, of course, requires a so-called polymerization initiator that initiates curing polymerization when it is irradiated with UV rays. In the present invention, as such a polymerization initiator, at least one initiator selected from acetophenone photoinitiators, benzoin photoinitiators, benzophenone photoinitiators, and phosphine oxide photoinitiators is used. It is preferable.
The proportion of such a polymerization initiator in the ultraviolet curable resin ink is preferably in the range of 2 to 10% by weight. Of course, a material having a function as a so-called sensitizer, which accelerates the polymerization in combination with the material for initiating the polymerization, may be used. Examples of those acting as sensitizers include n-butylamine and di-n.
Known materials such as -butylamine, tri-n-butylphosphine, triethylamine are used.

In the present invention, the defoaming property and the leveling property during printing are increased in the ink composition of the ultraviolet curable resin to improve the flatness of the print cured coating film, and at the same time, the coating film after curing is provided with slipperiness. In order to do so, an auxiliary agent such as a (meth) acrylic polymer or a trace amount of a silicon compound may be added.
At this time, the proportion of such an auxiliary agent in the ultraviolet-curable resin ink is preferably in the range of 0.5 to 5.0% by weight. The occupying ratio is preferably within the range of 1.0% by weight. When the amount of such an auxiliary agent or silicon compound is larger than the above-mentioned amount, the adhesion to the substrate is deteriorated.
In addition, the adherence of the hologram, magnetic stripe, and sign panel is deteriorated. Of course, if necessary, other auxiliary agents such as antistatic agents and silica may be added.

The above-mentioned UV-curable resin layer is formed by screen-printing a predetermined ink in a thickness of 0.5 μm to 30 μm. When the thickness is smaller than this, the abrasion resistance of the resin layer becomes weak, and when the thickness is too large, there arises such a disadvantage that the IC chip portion is cracked during molding. In normal screen printing, the ink amount is generally 1 μm to 10 μm.
It is about m. This thickness can be adjusted by the number of meshes of the plate at the time of screen printing and the thickness of the photosensitive emulsion. Overprinting is also performed to increase the printing thickness. The ink is prepared by thoroughly mixing the materials with a stirrer such as a planetary mixer. When a pigment component is contained in the ink, it is also dispersed and mixed by a disperser such as a roll mill. The ink viscosity when used as a screen ink is generally 50
It is often set in the range of 0 cps to 100,000 cps. If the viscosity is lower than this, it may cause ink dripping during printing and scumming. If the viscosity is too high, plate residue may occur during screen printing, resulting in poor transfer of ink, which may cause clogging.

In the present invention, the main purpose is to provide the ultraviolet curable resin ink by screen printing, but it is also recommended to print by offset printing for the purpose of reducing the printing thickness. In this case, the ink thickness is
It is in the range of 0.5 μm to 5 μm. Generally, the printing speed in screen printing is 200 to 500 sheets / hour, while in offset printing it is 5000 to 10,000 sheets / hour, and the manufacturing efficiency in offset printing is better than that in screen printing. . At this time, the viscosity of the ink used for offset printing is 10,000 cps to 10 cps.
It is desirable that the viscosity is 0000 cps, and a thickener may be added to increase the ink viscosity during offset printing.

In the method for producing an IC card of the present invention, a resin layer is provided on at least a part of the base material on the outermost surface side of the ultraviolet curable ink by screen printing or offset printing. It is cured by irradiation with ultraviolet rays and turned into a resin. The ultraviolet irradiator used at this time uses a commonly used metal halide lamp or mercury lamp. It goes without saying that a plurality of such UV irradiation lamps may be used. The irradiation amount of ultraviolet rays is defined by measuring the amount of light on the surface of the printing substrate with a photometer. In the present invention, the integrated light amount as the total light amount when irradiating ultraviolet rays is 50 mJ /
It is preferably cm ² ~400mJ / cm ^2, preferably, particularly preferably ^{200mJ / cm 2 ~300mJ / cm 2} . If the amount of UV light is less than this, the curing of the UV-curable resin ink will be insufficient, and if the amount of UV light is more than this, the temperature rise when irradiated with UV will be large, and the deformation of the base material such as PET will be greatly increased. Inconvenience occurs. Thus, it is important to make the amount of light appropriate during ultraviolet irradiation, but the range of such amount of ultraviolet light is within the range of irradiation conditions when performing general ultraviolet irradiation, and in the present invention, general-purpose ultraviolet light is used. The irradiator can be used. Such an ultraviolet irradiator is sold, for example, by Eye Graphics.

In general, an IC card is often used by printing a predetermined pattern on the front and back surfaces by offset printing or the like, but a hologram is attached to enhance security, or an IC chip unique ID number or the like is attached to the IC chip. Other than the magnetic stripe for recording on the magnetic stripe, a sign panel for writing the cardholder's name, or in some cases, a label with a sublimation transfer print of a face photo etc. The IC card of the present invention is often used by attaching it, and the IC card of the present invention has a printed image or a printed label provided with a printed image by transfer on the outside thereof in contact with the ultraviolet curable resin layer. But also.

The ultraviolet-curable resin layer described above in the present invention is
It is characterized by strong adhesiveness of labels having such an adhesive, and holograms and sign panels are made into a card and then a dedicated sticking machine (for example, sold by Kurz or Navitas). The sticking process is performed by heating and pressing with a sticking machine). The adhesive used in this case has a melting point or softening point of 80 ° C to
A thermoplastic resin such as a polyester resin material at 200 ° C. is often used as a main component. Base materials for holograms and sign panels are sold by Kurz and Murata Gold Leaf. The magnetic stripe is usually sold as a striped reel from Dainippon Ink and Kurtz, Hitachi Maxell, and the like. This is a layer mainly composed of low melting point wax as a release layer on a base material such as PET, a magnetic recording layer in which a magnetic material such as barium ferrite or γ-iron oxide is dispersed in polyurethane resin, a low melting point polyester resin, etc. It is composed of an adhesive layer composed of, etc., and is generally attached to the surface base material layer on the side where the magnetic stripe is attached, the magnetic stripe base material is peeled off, and the sheet is laminated with the inlet sheet by heat and pressure molding. And punch it into a predetermined shape to make a card. Adhesive labels such as facial photographs are often attached in card form. As described above, the IC card of the present invention is in contact with the ultraviolet curable resin layer, and the hologram, magnetic stripe,
At least one type of display substrate selected from sign panels and logo mark display substrates is also attached.

Although the embodiment relating to the manufacture of the non-contact IC card has been described above, it goes without saying that the present invention is applied to a contact type IC card and a combination card in addition to the non-contact IC card. . In the contact type IC card, the IC module is formed by making a counterbored hole in a base material such as vinyl chloride having a predetermined thickness, mounting the module, and fixing it with an adhesive. As the adhesive, cyanoacrylate or the like is used in addition to the epoxy resin. In this case, IC
The ultraviolet curing resin is provided on the base material before the module is mounted. Further, the combination card may be provided with a non-contact type IC chip and a contact type IC chip individually or may use an IC chip that serves as both ICs. In the present invention, these are collectively referred to as a combination card. Regarding this, particularly in the latter case of the integrated type, after making a hole for connection in the antenna terminal part of the IC card incorporating the inlet equipped with the antenna and further making a countersunk hole for embedding the integrated type IC chip, Mount the IC module. The IC module is fixed with cyanoacrylate or a hot melt adhesive. Such a combination manufacturing machine is sold, for example, by Mainen Ziegel.

[0030]

EXAMPLES Examples of the present invention will be shown below, but the present invention is not limited to these examples. [Example 1] As shown in Fig. 1, the following inlet sheet (first base material), to which a second base material and a third base material were attached, was punched into a card to form a hologram. , Magnetic stripe, sign panel, adhesive label sticking suitability was investigated. Inlet sheet: A PET material (manufactured by Toray Industries, Inc.) having a thickness of 50 μm, a copper foil having a thickness of 16 μm is attached to a predetermined pattern via a polyester adhesive, resist printing is performed, an antenna pattern is exposed, and unnecessary portions are removed by etching. Then, the antenna pattern was formed. Then 375m
An antenna sheet was obtained by cutting the sheet to a size of m × 475 mm using a sheet cutter. FC on this sheet
Non-contact type IC via B via ACF (Hitachi Chemical Co., Ltd.)
An inlet sheet was obtained by mounting a chip (manufactured by Tamura Electric Co., Ltd.).

Second base material and third base material: A predetermined pattern was printed on each surface of a white PET material (manufactured by Toray) having a thickness of 250 μm by an offset printing machine (manufactured by Heidelberg). The offset ink used was from Dainippon Ink. After that, 3 with a screen printer (manufactured by Tokai Shoji)
A screen ink having the following composition was solid-printed using a 00 mesh plate material and irradiated with an ultraviolet irradiator (manufactured by Eye Graphic Co.) to be cured. The thickness after printing was 7 μm. [Screen ink formulation] Urethane-based acrylate (Actilane 200 manufactured by ACROS Co., Ltd.) 30 parts by weight Epoxy acrylate (Actilane 300 manufactured by ACROS Co., Ltd.) 30 parts by weight Aliphatic glycol-based acrylate (neopentyl glycol diacrylate) 30 parts by weight Acetophenone-based photoinitiator 5 Parts by weight Acrylic polymer type adjuvant 5 parts by weight

A magnetic stripe material (manufactured by Kurz Co., Ltd.) is attached to a part of the second base material (front surface side sheet base material) after screen printing, and the stripes are temporarily attached by a heat and pressure treatment. The transparent PET) was removed and the magnetic layer was transferred to the second substrate. Sheet forming: 110 μm thickness on both sides of inlet sheet
Hot melt adhesive (manufactured by Toagosei: melting point 100 ° C)
Further, the second base material and the third base material are superposed on both outer sides thereof, sandwiched between stainless steel plates having a thickness of 1 mm, and subjected to a heating / pressurizing treatment of 4 kg / cm ² at 120 ° C. for 30 minutes. The material sheets were pasted together. Carding treatment: The formed sheet was punched with a card puncher to form a card of 54 mm × 86 mm. Adhesion of hologram and sign panel: hologram substrate (made by Kurtz) and sign panel substrate (made by Kurtz) at 150 ° C for 5 seconds by a sticker made by Kurtz
Was pasted on each card.

Peeling test: Cellotape (registered trademark) was attached to each part of the hologram, sign panel, and magnetic stripe, and peeled off, and it was judged whether or not the tape was peeled off, and the quality was judged. Sliding test: The frost and dynamic friction coefficient of each card were measured by a surface property tester manufactured by Shinto Kagaku. As compared with a commercially available magnetic card, it was checked whether the friction coefficient was significantly different, and the quality was judged. Flexibility: It was judged whether or not there was a crack due to the swelling of the IC chip at the time of molding, and the quality was judged. Odor: The odor after carding was judged by odor. Moldability: It was judged whether or not the ultraviolet curable resin was attached to the metal plate used at the time of forming the sheet, and the quality was judged. Yellowing: Whether the white background portions of the second base material and the third base material after being made into cards are discolored was visually inspected to determine whether they were good or bad. Flatness: Whether or not there is unevenness in screen printing on the surface after forming into a card was visually judged to be good or bad.

Example 2 A card was prepared in the same manner as in Example 1 except that the composition of the screen ink was changed, and each test was carried out. [Screen ink formulation] Urethane acrylate (Ebecry230 manufactured by Daicel UCB) 45 parts by weight Epoxy acrylate (Ebecry3700 manufactured by Daicel UCB) 25 parts by weight Aliphatic glycol acrylate (polyethylene glycol 400 diacrylate) 20 parts by weight Acetophenone photoinitiated Agent 5 parts by weight Acrylic polymer auxiliary agent 5 parts by weight

Comparative Example 1 A card was prepared in the same manner as in Example 1 except that the urethane acrylate was removed from the composition of the ultraviolet curable ink used in Example 1 and each test was conducted.

[Comparative Example 2] A card was prepared in the same manner as in Example 1 except that the epoxy acrylate was removed from the composition of the ultraviolet curable ink used in Example 1, and each test was carried out.

Comparative Example 3 A card was prepared in the same manner as in Example 1 except that the aliphatic glycol acrylate was replaced with trimethylolpropane triacrylate in the UV curable ink composition used in Example 1. Each test was conducted.

[Example 3] The procedure of Example 3 was repeated except that the composition of the UV curable ink used in Example 1 was changed to 10 parts by weight of the urethane acrylate and 50 parts by weight of the epoxy acrylate. A card was prepared in the same manner as in Example 1 and each test was performed.

[Example 4] The procedure of Example 1 was repeated except that the composition of the ultraviolet curable ink used in Example 1 was changed to 10 parts by weight of the epoxy acrylate and 50 parts by weight of the urethane acrylate. A card was prepared in the same manner as in Example 1 and each test was performed.

Example 5 A card was prepared in the same manner as in Example 1 except that an aromatic urethane acrylate was used as the urethane acrylate in the composition of the ultraviolet curable ink used in Example 1 and each test was conducted. Carried out.

Example 6 The UV curable ink used in Example 1 was mixed with an acrylic polymer auxiliary agent of 4.0.
A card was prepared in the same manner as in Example 1 except that the amount of the silicon compound was 1.0 part by weight, and each test was performed.

[Embodiment 7] The UV curable ink used in Embodiment 1 was blended with 2.5 parts of an acrylic polymer auxiliary agent.
A card was prepared in the same manner as in Example 1 except that the amount of the silicone compound was 2.5 parts by weight, and each test was performed.

Table 1 below shows Examples 1 to 7 and Comparative Example 1
3 shows the test results and the manufacturing status of the test items. In Table 1, ⊚: very good, ◯: good, Δ: barely usable, x: not usable.

[0044]

[Table 1]

[0045]

As can be seen from the experimental results shown in Table 1, the IC card of the present invention has abrasion resistance and glossiness due to the ultraviolet curable resin layer provided on at least a part of the front and back surfaces of the card. It is also excellent in terms of friction characteristics, durability of appearance when using a card, slipperiness in a transport system, and non-yellowing. Furthermore, in the case of the IC card of the present invention, the attachment of labels having an adhesive layer such as hologram, magnetic stripe, and sign panel is firm.

[Brief description of drawings]

FIG. 1 is a diagram showing a layer structure in a preferred example of an IC card of the present invention.

[Explanation of symbols]

1st base material 2 Second base material 3rd base material 4 Heat-meltable adhesive layer 5 IC chip 6 antenna 7 UV curable resin layer

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI Theme Coat (reference) H01L 25/00 G06K 19/00 H (72) Inventor Kiyoshi Furujo 1 No. 2 Tatsumi-cho, Anan City, Tokushima Prefecture Oji Paper Co., Ltd. Incorporator of the card media business (72) Inventor Toshiyuki Shimonishi 1-2, Tatsumi-cho, Anan city, Tokushima Prefecture Oji Paper Co., Ltd. Inside the card media business of the corporation (72) Naoto Takada 8-43 Nishiohisa, Arakawa-ku, Tokyo No. 2 F term in Teikoku Ink Mfg. Co., Ltd. (reference) 2C005 MA11 MA13 MA40 NA02 NA09 PA03 PA15 PA19 PA21 PA29 RA04 RA09 RA10 RA11 4J039 AD10 AE04 AE05 AE11 EA06 4J040 DF041 EC001 JA12 JB01 MB03 NA20 PA30 5B035 BA03 BB09 CA01 CA01 CA23

Claims (10)

[Claims] 1. An IC card, which optionally comprises an IC chip and an antenna for connecting to the IC chip and communicating with a communication device, wherein a urethane acrylate is provided on at least a part of the surface of the IC card. An IC card comprising an ultraviolet curable resin layer formed by curing an ultraviolet curable ink containing an epoxy acrylate and an aliphatic glycol acrylate as a main component. 2. The content of the urethane acrylate contained in the ultraviolet curable ink is in the range of 15 to 65 parts by weight per 100 parts by weight of the ink, and the content of the epoxy acrylate is 15 to 65 parts per 100 parts by weight of the ink. And the content of the aliphatic glycol acrylate is 15 to 65 per 100 parts by weight of the ink.
2. I according to claim 1, characterized in that it is in the range of parts by weight.
C card. 3. The IC card according to claim 1, wherein the content of the silicon compound in the ultraviolet curable resin layer is 1.0% by weight or less. 4. The IC card comprises a first base material 1 on which an IC chip and an antenna are provided, and another second base material and a third base material which are joined so as to sandwich the first base material. It is comprised, and the said ultraviolet curable resin layer is provided in at least one part of the surface of the said 2nd base material and / or the 3rd base material, The any one of the Claims 1-3 characterized by the above-mentioned. IC card described in. 5. A heat-meltable adhesive layer is provided between the first base material and the second base material, and between the first base material and the third base material. I according to claim 4,
C card. 6. The thickness of the ultraviolet curable resin layer is 0.5.
It is in the range of μm to 30 μm.
The IC card according to claim 5. 7. A hologram, a magnetic stripe, a sign panel, which is in contact with the ultraviolet curable resin layer and is provided outside thereof.
At least one kind of display base material selected from the display base material of the logo mark is attached.
6. The IC card according to any one of 6 above. 8. The print or print label provided with a print image or a print image by transfer is attached to the outside of the UV-curable resin layer in contact with the UV-curable resin layer. The IC card according to item 1. 9. Screen printing or offsetting on at least a part of the front surface and / or the back surface of an IC card, which optionally includes an IC chip and an antenna for connecting to the IC chip and communicating with a communication device. 9. The method for producing an IC card according to claim 1, wherein the ultraviolet curable ink is coated by printing, and then a curing treatment is performed by irradiating with ultraviolet rays. 10. An ultraviolet curable ink for surface coating of an IC card, which comprises urethane acrylate, epoxy acrylate and aliphatic glycol acrylate as main components.