JPH1131281A - Resonance label and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the circuit pattern of a resonance label, to reduce cost, to reduce process loss due to process reduction, to attain the mass production and high speed processing of a product, and to extend practical range or applicable range. SOLUTION: In a method for manufacturing a resonance label 1, mount 2 such as a polyester film, polyimide film, synthetic paper, and paper is prepared, a conductive printing part 3 for forming a spiral pattern constituting an electrode board pattern and an inductance element constituting a capacitance element is printed by the screen printing or gravure printing of conductive resin materials on the mount 2, and coated with a dielectric layer 4 made of a polyethylene film or resin. Then, a pair of electrode board pattern and spiral pattern are polymerized so as to be faced through the dielectric layer 4 to each other, and this pair of faced electrode board pattern and spiral pattern are connected by heat press or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resonance label used for identification management using an automatic identification card or the like, a card authenticity chuck for use in a prepaid card, a pachinko card, or the like, and various other security systems and the like. It is about the method.

[0002]

2. Description of the Related Art Conventionally, as a method of manufacturing this kind of resonance label, for example, as disclosed in JP-A-8-44964, (1) a step of releasably attaching a conductive foil to a mount. (2) a step of laminating a dielectric on the conductor foil attached to the mount, (3) a step of forming a pair of spiral patterns by half-die cutting the conductor foil on which the dielectric is laminated,
(4) a step of removing unnecessary portions of the conductor foil on which a pair of spiral patterns are formed, (5) a step of counter-polymerizing via the pair of conductor foils from which the unnecessary portions have been removed, and (6) a pair of opposed conductor foils Is manufactured through a step of combining the two.

[0003] Through these steps, an inductance element formed by a spiral pattern of aluminum foil and a polyethylene thin film as a dielectric sandwiched between a pair of electrode plates of the spiral pattern are formed. An LC resonance circuit is constituted by the capacitance element. At this time, a pair of spiral patterns superposed face-to-face via a polyethylene thin film serving as a dielectric also constitutes a capacitance element in a distributed capacity. The inherent resonance frequency of the LC resonance circuit is determined by the total number of turns of the spiral conductive foil as an inductance element and the dielectric constant and thickness of a dielectric element as a capacitance element sandwiched between a pair of conductive foils. And has a fixed resonance frequency based on the set pattern of the resonance labels. For example, when used for a prepaid card, a pachinko card, or the like, the resonance label is concealed and installed in the card, and the authenticity of the card is checked in a single reception mode by an ID scanner or the like prepared in advance. It was.

[0004]

However, according to the conventional method for manufacturing a resonant label, the above-mentioned step (3) of forming a pair of spiral patterns by half-die-cutting the conductor foil having the dielectric laminated thereon, 4) Since there is a step of removing unnecessary portions of the conductor foil on which a pair of spiral patterns are formed, mass production and high-speed processing of products cannot be performed due to an increase in loss of these steps, and the yield has been reduced. . Also,
The first stage of the conventional spiral pattern creation is based on the step (1) of re-peeling the conductor foil on the backing paper, and the step (3) of the conductor foil laminated with the dielectric is half-die cut to form a pair. Since this is a process of forming a spiral pattern, there is a limit in reducing the size of the circuit itself, and it has been impossible to reduce the size of the resonance label itself and the cost has been increased.

Accordingly, the present invention has been made in view of the above-mentioned problems which have been encountered in the past, and has been made to reduce the circuit pattern and cost, and to reduce the process loss due to the process reduction. Enables mass production and high-speed processing of products,
An object of the present invention is to provide a resonance label that can be used in place of a conventional barcode and a method of manufacturing the same.

[0006]

Therefore, in the present invention, an inductance element formed of a spiral conductive film, an electrode plate 6 formed at the other end of the inductance element, and the electrode plate 6 are provided. An electrode forming the capacitance element in a resonance label 1 having an LC resonance circuit having a capacitance element formed of dielectric layers 4 sandwiched therebetween and oscillating an echo wave by resonating with an electromagnetic wave of a specific frequency. The spiral pattern constituting the plate 6 and the inductance element is formed on the mount 2 by screen printing or gravure printing.
The above-described problem has been solved by the conductive printing unit 3 having the conductive resin material applied thereon.

Further, the above-mentioned problem has been solved because the mount 2 is made of a polyester film or a polyimide film, synthetic paper, paper or the like.

As the conductive resin material forming the conductive printed portion 3, any one of a polyester resin, an acrylic resin, a phenol resin, a silicon resin, a polyimide resin, and an olefin resin is used as a binder resin. The same problem was solved by filling and mixing either silver or copper.

Further, the printing plate used for the screen printing or the gravure printing uses a stencil made of a tetron member or a stainless steel member having a range of 150 to 350 mesh, and has an emulsion thickness of 0.01 to 0.25 mm. Solved the above-mentioned problem.

Further, as a method of manufacturing a resonance label,
(1) A process of preparing a mount such as a polyester film or a polyimide film, synthetic paper, paper, etc. (2) Screen printing of a conductive resin material on the mount, an electrode plate pattern forming a capacitance element and a spiral pattern forming an inductance element. Or a step of printing by gravure printing; (3) a coating step for forming the dielectric layer 4 with a polyethylene film or resin; and (4) a counter-polymerization of a pair of electrode plate patterns and a spiral pattern via the dielectric layer 4. The above-mentioned problem has been solved by comprising a step of performing (5) a step of combining a pair of electrode plate patterns and a spiral pattern which are superposed and opposed by a heat press or the like.

In the resonance label and the method of manufacturing the same according to the present invention, the LC resonance of the resonance label 1 formed by the conductive printing portion 3 in which the conductive resin material is applied on the mount 2 by screen printing or gravure printing. The circuit unit is reduced as much as possible in comparison with the conventional size. For example, in the case of printing with a 350 mesh screen, the size can be reduced to about 1 cm square size, and the thickness of the conductive printing portion 3 is within a range that maintains conductivity. About 0.01-0.25mm (1
0-250 μm),
It is possible to form a circuit pattern in various sizes and patterns according to multipurpose use.

Further, polyester resin, acrylic resin,
Using any of phenolic resin, silicone resin, polyimide resin and olefin resin as binder resin,
The conductive resin material for forming the conductive printed portion 3 which is filled with any one of gold, silver, copper and aluminum is formed at a low temperature while maintaining the original conductivity of gold, silver or copper. It is dry and improves the adhesiveness of the polyester film, polyimide film, synthetic paper, paper, etc. to the mount, and realizes a low-resistance circuit pattern.

Thus, when used for an automatic identification card, a prepaid card, a pachinko card, or the like, in addition to a single LC resonance circuit, a plurality of LC resonance circuits having different resonance frequencies are provided on one card board, for example. To form a multipurpose identification card or the like which can be arranged in a small space at an interval such that it does not interfere with each other on a dielectric film and can use a number of channels of a large number of transmission frequencies, in a considerably small size and at a low cost. And allows an alternative use for conventional barcodes.

Further, a step of removably attaching the conductive foil to the backing paper of (1) in the conventional spiral pattern making,
The step (3) of forming a pair of spiral patterns by half-die cutting the conductor foil on which the dielectric is laminated and the step (4) of removing unnecessary portions of the conductor foil having the pair of spiral patterns formed thereon have been deleted. As a result, in addition to the reduction in process loss due to the reduction in processes, mass production and high-speed processing of products are enabled, and the yield is improved.

As described above, if the resonance label 1 transmits an electromagnetic wave toward the resonance label 1 by, for example, an ID scanner, the resonance label 1 has a unique resonance frequency variably set according to the circuit pattern of the conductive printing section. An echo wave is oscillated by resonating with an external electromagnetic wave having substantially the same frequency, and the presence of the predetermined resonance label 1 is recognized by receiving the echo wave with an ID scanner.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The resonance label according to the present invention, as shown in a development plan view of the resonance label of FIG. 1 and a manufacturing process flow of FIG. 4, first, a polyester film or a polyimide film, synthetic paper, paper or the like. After the backing sheet 2 is processed and cleaned and washed, a conductive sheet 3 is formed on the backing sheet 2 to form a pair of electrode plate patterns forming a capacitance element and a pair of spiral patterns forming an inductance element. Printing by printing a negative made by exposing a conductive resin material by the optical lattice function of a net screen to a plate material, so-called screen printing (for example, silk screen printing) or using a copper cylinder etched by photoengraving or the like. Printing is performed by so-called gravure printing.

At this time, as a specific material of the conductive resin material, for example, any one of polymer materials such as polyester resin, acrylic resin, phenol resin, silicone resin, polyimide resin, and olefin resin is used as a binder resin. Metals with good conductivity such as gold, silver,
A paste-like material in which any one of copper and aluminum is filled and mixed as a filler material is used. For example, a low-temperature fast-drying and high-temperature cross-linking type having excellent adhesion to the mount 2 by screen printing, preferably to a polyester film It has intermediate properties (standard drying conditions: 130-180 ° C. × 10 minutes or more and 30 minutes or less), and a specific resistance of about 4.0 × 10 −6 Ω · c
m or less, viscosity about 100-140 poise, pencil hardness F
It is preferable to use a conductive resin material commonly known as Doitite FA-323 (manufactured by Fujikura Kasei Co., Ltd.) obtained by mixing the above-described polyester resin and silver.

In this case, the characteristics of the conductive printed portion 3 after printing are as follows.
0 Ω, the converted specific resistance is about 3.5 × 10 -5 Ω · cm, and the pencil hardness is F. A printing plate used for screen printing or gravure printing uses a stencil made of a tetron member or a stainless steel member having a mesh size of about 150 to 350, and has an emulsion thickness (print thickness) of about 0.01 to 0.25 mm.
(10 to 250 μm), it is possible to reduce the size to about 1 cm square by printing with, for example, a 350 mesh screen, and the thickness of the conductive printing portion 3 is, for example, about within a range in which conductivity is maintained. 0.01-0.
The degree of freedom is increased to about 25 mm (10 to 250 μm).

When the printed conductive portion 3 is once removed, it can be easily removed from the backing paper 2 by wiping it with an organic solvent such as thinner. Incidentally, if the conductive resin material forming the conductive printed portion 3 is, for example, a polyester resin which is further filled with carbon in addition to silver or copper, the characteristics of the conductive printed portion 3 after printing are, for example, Circuit resistance is 92 Ω and converted specific resistance is 2.5 × 10 -5 Ω in a conductive resin material obtained by mixing silver and carbon.
Cm and pencil hardness H.

Next, in order to form the dielectric layer 4 of a polyethylene film or a resin on the electrode plate pattern and the spiral pattern which are the pair of conductive printing portions 3, a liquid polyethylene is applied and dried, or About 2 thick
A thickness of about 2 to 10 μm to become the dielectric layer 4 by attaching an existing polyethylene film of about 10 to 10 μm or the like.
To form a polyethylene thin film.

Next, a perforation is made at a boundary portion between the pair of conductive printing portions 3 to form a fold line portion 5.
Is bent with the polyethylene thin film side inside, and the two conductive printing parts 3 are superposed and polymerized by heat press and the like, so that a pair of electrode plate patterns and a spiral pattern are formed via the dielectric layer 4. It is counter polymerized. In this manner, the dielectric constant of the polyethylene thin film which is the dielectric layer 4 becomes constant, and a circuit which does not require electrical conduction as shown in FIGS. You.

At this time, an inductance element composed of both conductive printed parts 3, an electrode plate 6 formed at the other end of the inductance element, and a dielectric layer 4 such as a polyethylene thin film sandwiched between the electrode plates 6. A resonance label 1 having a mutual capacitance element is formed, and two spiral patterns formed by both conductive printing portions 3 are bonded to each other via a dielectric layer 4 so that there is no bonding portion between the spiral patterns. As shown by the electrical equivalent circuit of the resonance label 1 of No. 3, each spiral pattern forming the coil L is in a state of being connected by the capacitor C layer. Thus, an LC resonance circuit that resonates with an electromagnetic wave having a specific frequency and oscillates an echo wave is formed. At this time, a pair of spiral patterns superposed face-to-face via a polyethylene thin film serving as the dielectric layer 4 also constitutes a capacitance element in a distributed capacity.

As described above, by changing the printing pattern and printing size of the conductive printing portion 3 by screen printing (for example, silk screen printing) or gravure printing using a conductive resin material, the resonance label 1 is previously set.
, A number of unique resonance frequencies are determined, which makes it possible to obtain a small-sized resonance label 1 in which a personal identification number is complicatedly coded, such as an electronic auto-lock card. .

In addition, a very complicated function programmed can be provided by the shielding method and the interlocking processing with the computer, and the frequency can be set to several millions or more. The setting operation can be easily set by a measuring device such as an ID scanner of a resonance frequency and a computer management, and the security is improved.

Next, an example of the use of the resonance label 1 according to the present invention will be described. As a means for confirming the status of electrical wiring, water pipes, gas pipes, and the like in a concealed environment of construction and civil engineering work. In consideration of the application, for example, the resonance label 1 is placed on a pipe, a joint pipe, a valve, or an electric wiring of water, gas, or the like concealed on a wall, a ceiling, a floor, and even a road or a sidewalk of a building. It is intended to be attached (attached or placed), and the locations concealed with wood, mortar, asphalt, concrete, soil, etc. can be easily and externally identified through an ID scanner including an antenna and a measuring instrument from the outside. It can be detected and confirmed accurately.

As described above, the resonance label 1 is formed by sandwiching the surface of a spiral pattern of aluminum foil with a polyester film, and has a thickness of about 0.2 to 0.5 mm and a size of about 30 × 50 mm, for example. Or about 10 × 10-80
The construction is very simple because of the rectangular shape of about × 80mm, and the fixed frequency range is 5M
Hz to 60 MHz, and any number of fixed frequencies can be provided, and the type of wiring, piping, etc. in a concealed environment can be determined separately. That is,
If an electromagnetic wave is transmitted toward the resonance label 1 by an ID scanner or the like, it resonates with an external electromagnetic wave having a frequency substantially equal to the natural resonance frequency variably set according to the print pattern and print size of the conductive printing unit 3. As a result, an echo wave is oscillated, and by receiving the echo wave with the ID scanner, the presence of the predetermined resonance label 1 is accurately recognized. In addition, by continuously overlapping the resonance labels 1 having different printing patterns and different printing sizes from each other in the conductive printing section 3, a continuously variable natural resonance frequency change can be obtained. By returning the position to the original position, the original regular resonance frequency can be reproduced.

[0027]

The present invention is configured as described above.
The LC resonance circuit unit of the resonance label 1 formed by the conductive printing portion 3 in which the conductive resin material is applied on the mount 2 by screen printing or gravure printing can be reduced as much as possible in comparison with the conventional size. As a result, it is possible to reduce the size of the circuit pattern and reduce the cost, to mass-produce the product and to perform high-speed processing, and to use it in place of the conventional barcode.

Further, by making it possible to variously set and change the print pattern and print size of the conductive printing section 3 by screen printing, it is possible to expand the practical range and the application range, and to further improve security. became. In particular, when used for an automatic identification card, a prepaid card, a pachinko card, etc., in addition to a single LC resonance circuit, a plurality of LC resonance circuits having different resonance frequencies are provided on a single card substrate such as a dielectric film. Since they can be arranged in a small space at intervals such that they do not interfere with each other, a number of channels of many transmission frequencies can be used, and a multipurpose identification card or the like can be formed in a considerably small size and at low cost, In addition, alternative use for conventional barcodes has been made possible.

Furthermore, a step of releasably attaching a conductive foil to the backing paper of (1) in the conventional spiral pattern making,
The step (3) of forming a pair of spiral patterns by half-die cutting the conductor foil on which the dielectric is laminated and the step (4) of removing unnecessary portions of the conductor foil having the pair of spiral patterns formed thereon have been deleted. As a result, in addition to the reduction of process loss due to process reduction, mass production of products and high-speed processing are enabled,
The yield could be improved.

[Brief description of the drawings]

FIG. 1 shows a resonance label showing an embodiment of the present invention, in which (A) is a developed plan view after screen printing or gravure printing of a conductive printing portion, and (B) is a plan view of a completed product.

FIG. 2 is a vertical sectional side view of the same.

FIG. 3 is a circuit diagram showing an electrical equivalent circuit of the resonance label.

FIG. 4 is a manufacturing process diagram of the resonance label.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Resonance label 2 ... Mount 3 ... Conductive printing part 4 ... Insulator layer 5 ... Fold line part 6 ... Electrode plate

Claims (5)

[Claims] An inductance element formed of a spiral conductive film, an electrode plate formed at the other end of the inductance element, and a capacitance element formed of dielectric layers sandwiched between the electrode plates. In a resonance label including an LC resonance circuit that resonates with an electromagnetic wave of a specific frequency and oscillates an echo wave, an electrode plate forming the capacitance element and a spiral pattern forming the inductance element include:
A resonance label comprising a conductive printing portion obtained by applying a conductive resin material on a backing sheet by screen printing or gravure printing. 2. The resonance label according to claim 1, wherein the backing is made of a polyester film or a polyimide film, synthetic paper, paper, or the like. 3. The conductive resin material forming the conductive printed portion uses any one of polyester resin, acrylic resin, phenol resin, silicone resin, polyimide resin, and olefin resin as a binder resin, and uses gold,
3. The resonance label according to claim 1, wherein the resonance label is a mixture of any one of silver, copper, and aluminum. 4. A printing plate used for the screen printing or the gravure printing uses a stencil made of a tetron member or a stainless member having a range of 150 to 350 mesh,
The resonance label according to any one of claims 1 to 3, wherein the emulsion has a thickness of 0.01 to 0.25 mm. 5. A method of manufacturing a resonance label, comprising the following steps: (1) a step of preparing a backing such as a polyester film or a polyimide film, synthetic paper, or paper;
(2) a step of printing an electrode plate pattern forming a capacitance element and a spiral pattern forming an inductance element on a mount by screen printing or gravure printing of a conductive resin material; and (3) a dielectric layer of a polyethylene film or resin. A coating step for forming; (4) a step of counter-polymerizing a pair of electrode plate patterns and a spiral pattern via a dielectric layer; and (5) a pair of electrode plate patterns and a spiral pattern of counter-polymerized by a heat press or the like. The step of combining.