JP2000322542A - Antenna magnetic core for noncontact data carrier, production of the core, antenna for noncontact data carrier using the core and noncontact data carrier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily provide a noncontact data carrier of high sensitivity at a low cost by reducing the force that is applied to the magnetic core of an antenna due to the stress caused by the heat contraction or the hardening contraction of resin when an internal parts is sealed by the resin. SOLUTION: A thin film magnetic material 42 of an amorphous magnetic alloy thin belt of an Fe group, a Co group, an Ni group, etc., is provided on the surface of an elastic resin layer 41 made of the urethane resin, silicone resin, etc., and wound round in one or more layers according to the shape of a sheath case of a noncontact data carrier. Thus, an almost cylindrical antenna magnetic core 40 is obtained. Then the core 40 is put into a cylindrical bobbin which is made of the polyamide resin etc., and contains a coil where a copper wire is wound round. Thus, a transmitting and receiving antenna is obtained. Then the antenna and a circuit parts are put into the sheath case of the data carrier and sealed by the sealing resin. Thus, the noncontact data carrier is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antenna core for a non-contact data carrier, a method for manufacturing the antenna core, an antenna for a non-contact data carrier using the antenna core, and a non-contact data carrier. In particular,
An antenna core used for an antenna for a non-contact data carrier that has an IC chip as a main internal component and transmits and receives signals to and from an external device in a non-contact manner, a method of manufacturing the antenna core, and a method of manufacturing the antenna core The present invention relates to a non-contact data carrier antenna using a core and a non-contact data carrier using the magnetic core.

[0002]

2. Description of the Related Art A non-contact data carrier system comprises a transponder which is carried and is called a non-contact data carrier, and an interrogator connected to a host side. Induction electromagnetic field, microwave (radio wave)
It is characterized in that communication is performed in a non-contact manner via a transmission medium such as the one described above. This system possesses a transponder or attaches it to various articles, and remotely reads information about the person or article possessed by the interrogator and provides it to the host, thereby realizing information processing about the person or article.

[0003] As an information transmission system of a non-contact data carrier system, an electromagnetic coupling system, an electromagnetic induction system, a microwave system, an optical communication system, and the like are generally known. Among these methods, in the electromagnetic coupling method, the electromagnetic induction method, and the microwave method, the energy of the transmission signal from the interrogator can be used as the driving power of the transponder. Since the transmission signal itself can be used as a drive source, there is no deterioration in response capability due to a decrease in battery output, as compared with other similar systems in which a drive source such as a battery needs to be built in the transponder. There is a great advantage that there is no limit on the use of the transponder due to battery life.

A transponder (non-contact data carrier) used in such a non-contact data carrier system is mainly composed of an antenna for transmitting and receiving signals to and from an interrogator and circuit components, and is durable and resistant. Considering the environment,
Usually, it has a structure in which internal components such as transmission / reception antennas and circuit components are hermetically sealed with resin or the like. As a transmitting / receiving antenna, a coil formed of a copper conductor is frequently used in terms of cost and productivity, and as a circuit component, for example, a copper circuit pattern and a terminal portion are formed on the surface of an epoxy board, and an IC Generally, a chip is wire-bonded. Usually, outer diameter 30 to 200
The two end wires (conductor portions) of the coil formed of the μm copper wire are connected to terminal portions of the circuit component by welding or soldering. As the resin material for hermetically sealing these internal components, thermoplastic resins such as vinyl chloride resin, polyethylene terephthalate resin, acrylonitrile-butadiene-styrene copolymer resin, or epoxy resin, phenol resin, silicone resin, etc. A thermosetting resin such as a thermosetting resin is used.

[0005]

By the way, in the non-contact data carrier system, it is necessary to reliably transmit and receive data regardless of the mounting position of the non-contact data carrier. Extending the communication distance is required, and higher sensitivity of the transmitting and receiving antennas is required. As a countermeasure, it has been known to use an amorphous magnetic material, ferrite, or the like as the antenna core to increase the transmission / reception sensitivity.

On the other hand, in the non-contact data carrier, it is necessary to cover the entire internal components such as antennas and circuit components with a sealing resin made of epoxy resin or the like in consideration of environmental resistance, impact resistance and the like. Consideration must be given to deterioration or breakage of the magnetic properties of the magnetic material for the magnetic core due to the sealing resin. In particular, when sealing the internal component, external stress is applied to the internal component, and the antenna (magnetic core) is deformed, so that a predetermined sensitivity cannot be obtained.

Therefore, by providing a buffer layer for relaxing the stress around the magnetic material for the magnetic core, the stress applied by the heat shrinkage and the curing shrinkage of the resin which occurs at the time of resin sealing is dispersed and absorbed by the buffer layer. Thus, it is conceivable to reduce the force directly applied to the antenna magnetic core.

The buffer layer is formed by applying a liquid curable resin, such as urethane resin, silicone resin, or epoxy resin, having elasticity after curing, to a core material for a magnetic core formed in a substantially cylindrical shape by dipping, coating, or casting. Etc. and then cured.

However, according to such a method,
There is a problem that it is difficult to uniformly apply the curable resin to the magnetic material for the magnetic core, the workability is not good, and as a result, the cost is extremely high.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an antenna magnetic core capable of maintaining high sensitivity without being damaged by external stress applied when resin sealing an internal component. It is to provide by a simple method. In addition, by using the antenna core, a non-contact data carrier that can increase the reliability of data transmission and reception and further extend the communication distance,
The purpose is to provide it easily and inexpensively.

[0011]

According to the present invention, an elastic resin layer serving as a buffer layer is provided in advance on a thin-film magnetic material forming an antenna core, and the antenna is formed by winding the elastic resin layer. It is intended to easily produce a magnetic core.

An antenna core for a non-contact data carrier according to a first aspect of the present invention is an internal component having a circuit component including a storage element for storing information and an antenna for transmitting and receiving signals to and from an external device in a non-contact manner. In a non-contact data carrier sealed with resin, the antenna magnetic core for the non-contact data carrier used for the antenna, the thin film magnetic material provided on the surface of the elastic resin layer is wound into a substantially cylindrical shape. It is characterized by becoming.

The antenna core for a non-contact data carrier can be manufactured by winding a thin-film magnetic material provided in advance on the surface of an elastic resin layer. For this reason, it is not necessary to attach a buffer layer later, and the coating and forming steps of the elastic resin layer are easy, and the thickness can be easily adjusted to a constant value. Therefore, a buffer layer can be easily provided on the inner surface or outer surface of the antenna core.

According to a second aspect of the present invention, in the antenna core for a non-contact data carrier, the thin film magnetic material of the antenna core for the non-contact data carrier is provided on the surface of the elastic resin layer with an adhesive. It is characterized by the following.

The antenna core can be provided with a thin-film magnetic material by, for example, an adhesive on the surface of an elastic resin layer. By winding the thin-film magnetic material, a buffer layer can be easily formed around the antenna core. Can be formed. Further, since the thin-film magnetic material can be bonded and fixed at the time of winding, it is not necessary to newly fix the magnetic material with an adhesive or an adhesive tape after the winding, so that the manufacturing process is further simplified.

According to a third aspect of the present invention, in the antenna core for a non-contact data carrier, the elastic resin layer in the antenna core for the non-contact data carrier is a double-sided adhesive sheet having elasticity. .

In the antenna core, since the elastic resin layer is made of an elastic double-sided adhesive sheet, a thin-film magnetic material can be easily provided on the surface of the elastic resin layer. In addition, since the thin film-shaped magnetic materials can be simultaneously adhered and fixed, it is more convenient when wound over a plurality of layers. Further, the thickness of the resin layer can be easily controlled when the resin layer is formed, and a stable antenna core can be obtained.

According to a fourth aspect of the present invention, there is provided an antenna magnetic core for a non-contact data carrier, wherein the non-contact data according to the first, second or third aspect is made of a hot melt type adhesive.

In the non-contact data carrier antenna magnetic core, the elastic resin layer becomes adhesive only when it is applied to the thin-film magnetic material or heated when it is fixed after winding. For this reason, handling during transportation and winding in the manufacturing process becomes very easy.

According to a fifth aspect of the present invention, there is provided a method of manufacturing an antenna core for a non-contact data carrier, comprising a circuit component including a storage element for storing information, and an antenna for transmitting and receiving signals to and from an external device in a non-contact manner. In a non-contact data carrier in which the internal parts are sealed with resin, a method for manufacturing an antenna core for a non-contact data carrier used for the antenna, wherein a thin film magnetic material is provided on the surface of the elastic resin layer,
It is characterized by being wound in a substantially cylindrical shape.

According to this manufacturing method, it is possible to easily obtain an antenna magnetic core provided with a buffer layer made of an elastic resin layer.

According to a sixth aspect of the present invention, there is provided a method of manufacturing an antenna magnetic core for a non-contact data carrier, wherein the elastic resin layer is formed of an adhesive resin.

According to this manufacturing method, the thin-film magnetic material can be easily provided on the elastic resin layer, and the antenna core provided with the buffer layer can be easily obtained. Further, since the elastic resin layer has adhesiveness, the thin film magnetic material can be bonded and fixed by winding. For this reason, it is not necessary to newly fix with an adhesive or an adhesive tape after winding, and the manufacturing process is further simplified.

According to a seventh aspect of the present invention, there is provided a method of manufacturing a magnetic core for a non-contact data carrier, comprising: a circuit component including a storage element for storing information; and an antenna for transmitting and receiving signals to and from an external device in a non-contact manner. In a non-contact data carrier in which an internal component is sealed with a resin, a method of manufacturing an antenna core for a non-contact data carrier used for the antenna, wherein the thin-film magnetic material is one of a double-sided adhesive sheet having elasticity. And then wound in a substantially cylindrical shape.

According to the manufacturing method, the thin-film magnetic material can be easily provided on the elastic resin layer, and the antenna core provided with the buffer layer can be easily obtained. Moreover,
Since the thin-film magnetic material can be adhered and fixed at the time of winding, it is not necessary to newly fix the magnetic material with an adhesive or an adhesive tape after the winding, thereby simplifying the manufacturing process. In particular, in the case of winding a plurality of times, it can be said that this method is more advantageous in that the thin film magnetic materials can be simultaneously adhered and fixed. Further, the thickness of the resin layer can be easily controlled at the time of forming the resin layer, and a stable antenna core can be easily obtained.

An antenna for a non-contact data carrier according to claim 8 is a circuit component including a storage element for storing information,
5. A non-contact data carrier antenna for use in a non-contact data carrier in which an internal component having an antenna for transmitting and receiving signals to and from an external device in a non-contact manner is used for a non-contact data carrier. The non-contact data carrier antenna core, a bobbin provided around the antenna core, and a coil wound around the bobbin.

In the antenna, an elastic resin layer can be easily provided on the antenna magnetic core, and an antenna with reduced characteristic deterioration due to resin sealing can be manufactured easily and inexpensively. Therefore, by using the antenna, a stress applied during resin sealing can be reduced, and a highly sensitive non-contact data carrier can be easily obtained at low cost.

A non-contact data carrier according to claim 9 is:
A non-contact data carrier in which an internal component including a circuit component including a storage element for storing information and an antenna for transmitting and receiving signals to and from an external device in a non-contact manner is sealed with resin. Item 8 is a non-contact data carrier antenna.

In this non-contact data carrier, since the antenna according to the present invention is used, a reliable non-contact data carrier can be obtained inexpensively and easily.

[0030]

FIG. 1 is a sectional view showing the structure of a non-contact data carrier according to the present invention, and FIG. 2 is a diagram showing an antenna core used for the non-contact data carrier of FIG.
3A is a plan view, FIG. 3B is a side view, and FIG. 3 is a perspective view showing an antenna core used for another non-contact data carrier.

The non-contact data carrier 1 shown in FIG. 1 includes a circuit component 2, a transmitting / receiving antenna 3, and an outer case 4 for housing these internal components. Note that the outer case 4
Has a substantially cylindrical shape here, but may have a cubic shape, and is not particularly limited in the present invention.

The circuit component 2 has, for example, a copper circuit pattern and terminal portions formed on the surface of an epoxy substrate 2a.
A soldered C chip 2b is used. IC
The chip 2b includes the transmitting / receiving antenna 3 in the configuration of the transponder.
Except for the above, each of the functional circuit units is built-in.

The transmitting / receiving antenna 3 is configured by winding a coil 30 formed of a conductive copper wire around an antenna core 40. The two end wires (conductor portions) of the coil 30 are connected to the circuit component 2 by welding or soldering.
Are connected to the terminal section.

The antenna magnetic core 40 is formed by winding a thin-film magnetic material 42 provided on the surface of an elastic resin layer 41. The thin-film magnetic material 42 is, for example, Fe-based,
The thin-film magnetic material 42 such as a ribbon made of an amorphous magnetic alloy such as a Co-based or Ni-based alloy or a ribbon made of a microcrystalline magnetic alloy can be used.

The elastic resin layer 41 is provided to reduce the stress on the antenna core 40 when the internal parts are sealed with resin, and functions as a buffer layer. Examples of the elastic resin layer 41 include a sheet-like material formed of an elastic urethane resin, a silicone resin, an epoxy resin, or the like. Those that do not affect the magnetic properties are preferably used. The thin-film magnetic material 42 is bonded to the surface of the elastic resin layer 41 with an adhesive. Alternatively, a liquid curable resin such as a urethane resin, a silicone resin, or an epoxy resin that exhibits elasticity after curing can be used. In this case, the thin film-shaped magnetic material 42 may be applied to a uniform thickness on the surface and then cured. Alternatively, it may be wound in a semi-cured state and then cured.

In the present invention, as described above, the above-mentioned thin-film magnetic material 42 is provided on the surface of the elastic resin layer 41 and wound. Therefore, it is more preferable to use an elastic resin layer 41 having adhesiveness. When such a material having adhesiveness is used, when the thin-film magnetic material 42 is wound, the thin-film magnetic material 42 can be fixed without using an adhesive or an adhesive tape at the end of winding.

The elastic resin layer 41 having such adhesiveness
As a solvent-based, solvent-free (curable) and other adhesives,
For example, various acrylic adhesives and rubber adhesives can be used. Among these, it is particularly preferable to use a hot melt adhesive. Examples of the hot melt adhesive include a polyvinyl alcohol resin adhesive, a polyolefin resin adhesive, and a polyester adhesive. Such a hot-melt adhesive shows adhesiveness only when heated. Therefore, the adhesiveness is exhibited by heating only at the time of sticking to the surface of the thin film-shaped magnetic material 42 or thereafter when winding into a substantially cylindrical shape. It is a simpler and even more advantageous method. These adhesives are applied to the surface of the thin-film magnetic material 42 by a roll method, a spray method, or a dipping method, and the elastic resin layer 41 is provided.

Further, a double-sided adhesive sheet can be used as the elastic resin layer 41 having adhesiveness. The double-sided adhesive sheet can be obtained, for example, by applying the above-mentioned various elastic adhesives to both surfaces of various plastic sheets such as polyethylene and polypropylene. In addition, a resin sheet having elasticity such as polyurethane, which is coated with an adhesive on both sides, or a resin sheet having elasticity impregnated with an adhesive can be used. By using such a double-sided adhesive sheet, the thin-film magnetic material 42 can be easily bonded. In addition, in the case of winding a plurality of times, the thin-film magnetic material 42 can be easily fixed to the thin-film magnetic material 42, which is more convenient.

The thin-film magnetic material 42 provided with such an elastic resin layer 41 is formed in one or more layers according to the shape of the outer case 4 of the non-contact data carrier 1, such as a cylindrical shape, an elliptic cylindrical shape, or the like. It is wound in a substantially cylindrical shape. Further, in the antenna magnetic core 40 shown in FIG. 2, the thin film-shaped magnetic material 42 which is cut in a strip shape in advance is used.

The transmission / reception antenna 3 includes the antenna core 40 formed as described above, a bobbin 50 provided around the antenna core 40, and the coil 30 wound around the bobbin 50. The bobbin 50 functions as a support member that supports the coil 30 in a fixed shape.
The bobbin 50 is made of polyester resin, polyamide resin, A
From insulating thermoplastic resin such as BS resin,
It is manufactured in a substantially cylindrical shape or a substantially elliptical cylindrical shape by injection molding or the like. The antenna core 40 is inserted into the cylinder of the bobbin 50. Thus, as shown in FIG.
Is wound around a coil 30 around which, for example, a copper wire is wound.
Is provided.

The transmitting / receiving antenna 3 and the circuit component 2 thus manufactured are housed in the outer case 4 and then sealed with the sealing resin 5. The outer case 4 is made of, for example, various plastic materials such as polycarbonate resin, polyester resin, polyamide resin, polyphenylene sulfide resin, and ABS resin having an insulating property.
It is manufactured in a cubic shape, a rectangular parallelepiped shape, a columnar shape or the like with one opening.

As the sealing resin 5 for sealing the internal parts,
For example, thermoplastic resins such as polystyrene, polyethylene, polypropylene, polyvinyl alcohol, polyurethane, phenolic resin, epoxy resin, acryl,
A thermosetting resin such as silicone can be used.
The sealing resin 5 is injected into the outer case 4, cooled and solidified, and the non-contact data carrier 1 is manufactured. When a photocurable resin is used, it is solidified by light irradiation.

As described above, the antenna core 40 according to the present invention is used.
By using the resin, the stress applied due to the heat shrinkage and the cure shrinkage of the resin generated during the resin sealing is dispersed and absorbed by the elastic resin layer 41. As a result, the stress applied to the antenna core 40 is reduced, the performance of the transmitting / receiving antenna 3 can be prevented from deteriorating, and high sensitivity can be easily achieved. Therefore,
For example, the reliability of data transmission / reception can be increased regardless of the attachment position of the non-contact data carrier 1, and the like.
A non-contact data carrier 1 having excellent characteristics, such as making it possible to extend the communication distance between the transponder and the interrogator, can be provided at low cost.

Further, in the above embodiment, the case where the thin-film magnetic material 42 cut into a strip is wound around the bobbin 50 has been described. In the present invention, as shown in FIG. It is also possible to form the antenna magnetic core 40 by winding the wide thin film-shaped magnetic material 42 provided on the surface of the antenna 40 into a substantially cylindrical shape. In this case,
The antenna magnetic core 40 may be formed by winding the thin-film magnetic material 42 provided on the surface of the elastic resin layer 41 formed in a sheet shape into a roll shape and cutting it into an appropriate width. . As a result, the antenna core 40 can be formed continuously, and the antenna core 40 can be obtained even more inexpensively.

In the above embodiment, the case where the coil 30 is wound around the bobbin 50 has been described.
In the present invention, the coil 30 can be formed by directly winding a copper wire around the antenna core 40 without using the bobbin 50.

Further, there is no need to use the outer case 4, and the internal components are directly loaded into the mold, and the internal components are sealed by casting or transfer molding of an epoxy resin or the like, or by injection molding of a thermoplastic resin. Alternatively, the non-contact data carrier 1 can be manufactured.

Further, there is no need to use the outer case 4, and the internal components are directly loaded into the mold, and the internal components are sealed by casting or transfer molding of an epoxy resin or the like, or by injection molding of a thermoplastic resin. Alternatively, the non-contact data carrier 1 can be manufactured.

[0048]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to specific embodiments.

Example 1 C having a width of 10 mm and a thickness of 50 μm
An urethane resin having elasticity after curing is applied to an o-based amorphous magnetic alloy sheet to a thickness of 30 μm, cured through a curing oven at 60 ° C., and then placed in a cylindrical jig having a diameter of 5.5 mm to form an outer diameter of 5 mm. The antenna core of Example 1 was obtained by winding the wire until it became 0.9 mm, cutting it, and fixing the end with an adhesive tape.

Example 2 C having a width of 10 mm and a thickness of 50 μm
An epoxy-based adhesive having elasticity after curing is applied to an o-based amorphous magnetic alloy sheet to a thickness of 30 μm,
After curing to a state where the adhesiveness before complete curing was maintained through a curing furnace, the resin was wound around a cylindrical jig having a diameter of 5.5 mm until the outer diameter reached 5.9 mm, and cut. Then, it was again put into a curing oven at 60 ° C., and the epoxy adhesive was completely cured, whereby the antenna core of Example 2 was obtained.

Example 3 C having a width of 10 mm and a thickness of 50 μm
After adhering an elastic double-sided adhesive sheet having a thickness of 30 μm to an o-based amorphous magnetic alloy sheet, the diameter is 5.5 mm.
Was wound around an outer diameter of 5.9 mm and cut to obtain an antenna core of Example 3.

Example 4 C having a width of 10 mm and a thickness of 50 μm
An o-type amorphous magnetic alloy sheet is heated and melted with a polyolefin-based hot-melt adhesive having elasticity after curing, applied to a thickness of 30 μm on the sheet, solidified by cooling, and an amorphous sheet with a hot-melt adhesive layer Was prepared. Then, it is wound around a cylindrical jig having a diameter of 5.5 mm until it has an outer diameter of 5.9 mm, cut, heated again, melted by hot-melt type adhesive, and adhered. Obtained.

(Comparative Example 1) C having a width of 10 mm and a thickness of 50 μm
An o-type amorphous magnetic alloy sheet was wound around a cylindrical jig having a diameter of 5.5 mm until the outer diameter reached 5.9 mm, cut, and fixed at the ends with an adhesive tape. I got

[Evaluation Test] Diameter of a bobbin made of polyamide resin having an outer diameter of 7.0 mm formed by winding the antenna magnetic cores of Examples 1 to 4 and Comparative Example 1 with 600 mm turns of a copper wire having a diameter of 0.05 mm. Insert into the 6.0mm cylindrical hollow,
Transmission and reception antennas were fabricated. Next, a circuit board was connected to the transmitting / receiving antenna to produce an internal component, and the inner diameter was 9 mm.
It was inserted into an outer case made of a polycarbonate resin having an outer diameter of 10 mm. Thereafter, an appropriate amount of a liquid epoxy resin was poured into the outer case, and the epoxy resin was cured by heating at 80 ° C. in an oven to prepare a non-contact data carrier.

With respect to the obtained non-contact data carrier,
With respect to the magnetic characteristics of the antenna core before and after the resin sealing and the sensitivity of the non-contact data carrier, the deterioration rate of the inductance and the communication distance at 125 kHz and 1 v were measured. Table 1 shows the results.

[0056]

[Table 1] (Test results) As can be seen from Table 1, when an antenna core manufactured by winding a thin-film magnetic material having an elastic resin layer is used, deterioration of magnetic properties is small even after resin sealing, and By using the antenna core,
The communication distance has increased dramatically. Further, the manufacturing process was simplified.

[0057]

According to the present invention, a non-contact data carrier antenna core provided with a buffer layer of an elastic resin layer can be obtained simply and inexpensively.

Therefore, by using the antenna core, the stress applied to the antenna core due to the heat shrinkage or the curing shrinkage due to the resin sealing can be reduced. Therefore,
It is possible to prevent the performance of the transmitting and receiving antennas from deteriorating and to supply an antenna capable of maintaining high sensitivity at low cost. As a result, it is possible to provide a non-contact data carrier system having excellent characteristics, such as increasing the reliability of data transmission and reception and extending the communication distance between the transponder and the interrogator, at low cost.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a configuration of a contactless data carrier of the present invention.

FIG. 2 is a diagram showing an antenna core used for the non-contact data carrier of FIG. 1, wherein FIG.
FIG. 2 (b) is a side view thereof.

FIG. 3 is a perspective view showing an antenna core used for another non-contact data carrier.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Non-contact data carrier 2 ... Circuit components 2a ... Epoxy board 2b ... IC chip 3 ... Transceiver antenna 4 ... Outer case 5 ... Sealing resin 30 ... Coil 40 ... Antenna core 41 ... Elasticity Resin layer 42: Thin film magnetic material

Claims (9)

[Claims] 1. A non-contact data carrier in which an internal component including a circuit component including a storage element for storing information and an antenna for transmitting and receiving signals without contact with an external device is sealed with resin. An antenna core for a non-contact data carrier, wherein the thin-film magnetic material provided on the surface of the elastic resin layer is wound into a substantially cylindrical shape. . 2. The antenna core for a non-contact data carrier according to claim 1, wherein said thin-film magnetic material is provided on a surface of said elastic resin layer by an adhesive. 3. The antenna core for a non-contact data carrier according to claim 1, wherein the elastic resin layer is a double-sided adhesive sheet having elasticity. 4. The antenna core for a non-contact data carrier according to claim 1, wherein the elastic resin layer is made of a hot-melt type adhesive. 5. A non-contact data carrier in which an internal component including a circuit component including a storage element for storing information and an antenna for transmitting and receiving a signal without contact with an external device is sealed with a resin. A method of manufacturing an antenna magnetic core for a non-contact data carrier used for an antenna, comprising: providing a thin-film magnetic material on a surface of an elastic resin layer, and winding the thin-film magnetic material into a substantially cylindrical shape. Of manufacturing an antenna magnetic core for a vehicle. 6. The method for manufacturing a magnetic core for a non-contact data carrier according to claim 5, wherein said elastic resin layer is formed of an adhesive resin. 7. A non-contact data carrier in which an internal component including a circuit component including a storage element for storing information and an antenna for transmitting and receiving a signal without contact with an external device is sealed with a resin. A method of manufacturing an antenna magnetic core for a non-contact data carrier used for a method, wherein the thin-film magnetic material is provided on any one of surfaces of a double-sided adhesive sheet having elasticity, and then wound into a substantially cylindrical shape. A method of manufacturing an antenna magnetic core for a non-contact data carrier. 8. A non-contact data carrier used for a non-contact data carrier in which an internal component including a circuit component including a storage element for storing information and an antenna for transmitting / receiving a signal without contact with an external device is sealed with a resin. An antenna for a contact data carrier, the antenna core for a non-contact data carrier according to any one of claims 1 to 4, a bobbin provided around the antenna core, and a coil wound around the bobbin. An antenna for a non-contact data carrier, comprising: 9. A non-contact data carrier in which an internal component including a circuit component including a storage element for storing information and an antenna for transmitting and receiving a signal without contact with an external device is sealed with a resin, 9. A non-contact data carrier according to claim 8, wherein the antenna is a non-contact data carrier antenna.