JP2015082175A - Ic tag label - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an IC tag label which has an embrittling function to be used for a non-contact type IC tag label, and which has a high embrittling effect and less likely allows disturbance on the embrittling function.SOLUTION: The IC tag label includes an inlet composed of an IC chip and an antenna formed on a substrate, and an upper paper and a lower paper laminated with an adhesive layer on front and back surfaces of the inlet, respectively, and has tackiness on a side of the lower paper where the IC tag is not present. The IC tag label has a cut in the lower paper.

Description

  This technology is an IC tag label that is used for a non-contact type IC tag label and has a brittle function, and has a high brittle effect, and the brittle function is not easily disturbed.

  An RFID tag (hereinafter referred to as an IC tag label or simply referred to as an IC tag or a label) that can read information stored in an IC chip wirelessly is used in a contactless card for entering / exiting management. It is affixed as labels to various articles and cases that are distributed in the market, and is used for purposes such as shoplifting prevention, authentication, history management, distribution management, and inventory management.

  For example, in the management of products at retail stores and rental stores, IC tags equipped with IC chips for IC tags and antennas are used. An IC tag is a general term for a system that enables high-frequency transmission and reception of data, which is unique information of an IC tag for an IC tag, without contact.

  ID information, which is unique information for distinguishing each IC tag, is written in the IC chip incorporated in the IC tag. In some cases, the IC chip has a general-purpose memory area different from the memory area containing the ID information, and can read and write information related to products.

  Reading of IC chip ID information and reading and writing of information in the general-purpose memory area are performed in a non-contact manner by a dedicated data read / write device RW (Reader Writer) by short-range wireless communication using an electromagnetic field or radio wave. Can be done.

  For example, by attaching the IC tag to a product and reading the ID information by a RW, the RW can be combined with a computer system and applied to a product entry / exit management, inventory management, rental management, and the like. Furthermore, if information related to the product such as the product code, the arrival date, the person in charge is written in RW in the general-purpose memory area, the information of the product can be read by reading the information in RW connected to another computer system. Can be transmitted between computer systems.

  However, for such IC tags, there are those that sell forgery and gain benefits by forging and improperly attaching IC tags, for example.

  In order to deal with such unauthorized use of IC tags, when an IC tag attached to an article is to be peeled off, an antenna pattern that is an essential component of the IC tag is easily broken. Prevention techniques are disclosed (see, for example, Patent Document 1 and Patent Document 2).

  As a patent document for such an IC tag, Japanese Patent No. 5035041 “Use of Fragile Labels and Fragile Labels” discloses an invention in which perforations and cuts are made in the labels to make them vulnerable to prevent replacement. ing. In addition, this document also describes controlling the degree of brittleness by controlling the adhesive strength between layers.

  However, in the invention such as the document, it is necessary to select a suitable adhesive and develop a new adhesive. If it is not general-purpose adhesive, a tack paper manufacturing process is added before labeling.

  Moreover, the type which has a notch with a brittle IC tag label may not be destroyed if the method of peeling is devised. In such a case, in order to make it difficult to break, design and verification of the design, position, size, number, etc. of the cuts had to be examined in detail, and time and effort were required. Further, when brittle paper or brittle tack paper is used, the brittle function as a label increases, but there is a problem that an inlet film cannot be applied. This is because the brittle effect is weakened when applied.

Patent No. 5035041 Japanese Patent No. 4549765

  In view of the above problems, the present invention provides an IC tag label that is used for a non-contact type IC tag label and has a brittle function, has a high brittle effect, and is difficult to disturb the brittle function. It is an issue.

  In order to solve the above-mentioned problems, an invention according to claim 1 of the present invention is an inlet comprising an IC chip and an antenna formed on a substrate (hereinafter referred to as “inlet film”), and the front and back of the inlet. An IC tag label in which an upper paper and a lower paper are laminated through an adhesive layer, and the lower paper has an adhesive on the non-IC tag side, and the lower paper has a cut.

  The invention according to claim 2 of the present invention is the IC tag label according to claim 1, wherein the cut is provided in a lower paper and an inlet film.

  The invention of claim 3 of the present invention is the IC tag label according to claim 1 or 2, wherein the lower paper uses brittle paper.

  The invention according to claim 4 of the present invention is the IC tag label according to any one of claims 1 to 3, wherein an antenna circuit exists on an extension of the cut.

  In the invention of claim 5 of the present invention, the adhesive used for the IC tag label uses an adhesive having no adhesive substrate in at least one layer. The IC tag label according to item 1.

  The invention according to claim 6 of the present invention is the IC tag label according to any one of claims 1 to 5, wherein the incision is an incision that is not exposed on the outer periphery of the label and on the surface layer. It is.

  The invention according to claim 7 of the present invention is characterized in that, in the adhesive used for an IC tag label, the “adhesive strength between the inlet film and the lower paper” is stronger than the “adhesive strength between the upper paper and the inlet film”. The IC tag label according to any one of claims 1 to 6.

  By the above-described solution, the notch is not exposed on the exterior or outer periphery of the label, and only the lower paper or the lower paper and the inlet film are notched so that the brittle function is hardly disturbed and It has the effect of making the brittle function difficult to understand.

  In addition, the use of brittle paper and the use of adhesive without an adhesive substrate have an effect that the inlet film is more easily broken when the label is peeled off from the adherend. Furthermore, it has become possible to obtain a high brittle function due to the above-described incision.

  Also, by changing the “adhesive strength between the inlet film and the lower paper” and “adhesive strength between the upper paper and the inlet film” and having a notch, the appearance as a label is easily broken. doing.

It is a figure which shows one form of this invention. It is a figure which shows one of the comparative examples of this invention. It is a figure which shows one of the comparative examples of this invention. It is a figure which shows one of the comparative examples of this invention.

  The IC tag of the present invention basically has an antenna 2 and an IC chip 1 formed on an inlet base material 3 as shown in FIG. 1 sandwiched between an upper paper adhesive layer 5 and a baseless adhesive layer 6. In this configuration, the paper is sandwiched between upper paper and lower paper. As a method of use, the above-mentioned IC tag is provided with the lower paper adhesive 8 and attached to an adherend to be used as an IC tag label.

  Next, each layer structure will be described.

  As the inlet base material 3, a plastic base material such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), or polycarbonate can be used. Moreover, a paper base material etc. can be used and especially paper, a foamed PET film, etc. are used suitably, when improving destructiveness.

  As the antenna element, Al, Cu, Ag, conductive ink, or the like is preferably used. However, the antenna element is not limited to this as long as it is conductive. Moreover, HF, UHF, LF, etc. can be used for the frequency of an IC tag. The antenna element is not particularly limited as long as a circuit can be formed using a conductive material, and various antenna elements can be used. For example, a method of forming a metal thin film in a pattern by etching, a method of forming a conductive ink in a pattern by printing, and the like can be mentioned.

  As a method of forming a metal thin film into a pattern by etching, a conductive thin film such as aluminum or copper is coated in a pattern with an etchant-resistant material, and the conductive thin film is partially removed with an etchant. A method of forming a conductive thin film in a pattern can be used. In addition, for the part where the wiring intersects, a jumper wire may be provided on the back surface of the inlet base material, and a connection opening may be provided on the inlet base material, or may be connected by bonding separately using a jumper wire member. May be. As a method of forming the conductive ink in a pattern by printing, it is preferable that the conductive ink is made of a conductive paste in which particles made of a conductive material are dissolved or dispersed in a binder. The conductive material described above is preferably silver-based, and examples of the conductive paste include an evaporative drying type silver paste that contains a binder resin, a solvent, and silver powder to obtain conductivity by contacting them. However, the conductive material is not limited to silver, but for example, a metal powder such as copper or nickel, a conductive carbon powder, a conductive fiber, a conductive whisker or the like dissolved or dispersed in a solvent together with a resin binder is used. it can. As a printing method, for example, it can be formed by printing by a printing method such as screen printing, flexographic printing, gravure printing, or offset printing. It is also possible to print conductive ink with a printer.

  The IC chip is electrically connected to the antenna element and mounted on the inlet base material. Usually, the antenna element is mounted after being formed.

  As the lower paper adhesive, the upper paper adhesive, and the baseless adhesive, a solvent type, an aqueous emulsion type, a hot melt type, an adhesive, and the like can be used.

  The solvent type is mainly composed of natural rubber and synthetic rubber including block copolymer, rosin and its ester, tackifier resin such as terpene resin, softener such as phthalate ester and phosphate ester, toluene, N- Adhesion of rosin and its ester, terpene resin, etc. to acrylic resin mainly composed of polyacrylate obtained by radical polymerization in solvent mainly composed of ethyl acetate or toluene Some are made of a resin, a plasticizer such as a phthalate ester or a phosphate ester, and a curing agent such as a diisocyanate or an aziridinyl group compound.

  As an aqueous emulsion type, an acrylic resin mainly composed of polyacrylate obtained by emulsion polymerization in water is made into an emulsion composed of additives such as antifoaming agent, leveling agent, thickener netine dispersion, etc. There is.

As the hot melt type (solvent-free type), there is one having an ethylene-vinyl acetate copolymer as a main component, and any of the above solvent type, aqueous emulsion type, and hot melt type (solvent-free type) can be used. Among them, the adhesive layer using the water-based emulsion type adhesive with acrylic resin as the main resin is more suitable in terms of flexibility between the rollers, and it can cope with environmental problems, safety and economy. It is a more advantageous pressure-sensitive adhesive from the viewpoint of the above.

  In addition, polyvinyl acetate, ethylene-vinyl acetate copolymer, polyacrylate ester, polyvinyl chloride, natural rubber, synthetic rubber, vinyl acetate-acrylate copolymer, polyester, polyurethane, etc. A water-insoluble polymer material can also be used.

  These materials can be set within the aforementioned adhesive strength range by optimization of additives, molecular weight, and the like. The thickness is 10 to 100 μm. Most preferably, it is about 20-30 micrometers. However, from the results of Examples, it is preferable to use a substrate-free adhesive.

  However, in the present invention, the “adhesive force between the inlet film and the lower sheet” is made stronger than the “adhesive force between the upper sheet and the inlet film”. Thus, by changing the adhesion degree of the pressure-sensitive adhesive layer, it becomes possible to more effectively make brittleness and break the IC tag due to the difference in peel strength.

  For the cover paper, a material that is easy to tear is desirable. In the case of paper, high-quality paper, medium-quality paper, art paper, coated paper, etc. In the case of other than paper, synthetic paper such as PET (polyethylene terephthalate), PP (polypropylene), PVC (polyvinyl chloride), etc., the thickness is In any case, it is preferable that the thickness is about 50 μm or less because it is more easily broken and the brittle function is enhanced.

  As for the lower paper, the use of brittle paper increases the effect of preventing forgery. As the material, PVC, paper, foamable PET paper, PP paper, polyester film, and the like are preferably used. Although the thickness is not specified, it is preferably a thin substrate having a thickness of 50 μm or less.

  Next, examples of the present invention will be described below.

  The tear strength (brittle effect) of an IC tag label in which a UHF band film antenna was sealed with foamed PET was verified.

  The following materials and methods were used as materials used in this example.

  An Al antenna (about 10 μm) was formed by etching on a PET film (thickness 50 μm) as an antenna on a UHF band IC chip. At the time of labeling, the size was slightly smaller than the outer periphery of the label so that the inlet film was not exposed at the label edge. As the upper paper, a tack paper having a weak adhesive property (foamed PET thickness: 50 μm) is used for the foamed PET-based synthetic paper, and as the lower paper, a brittle tack paper having a strong adhesive property having no adhesive base material on the brittle paper ( Brittle paper thickness 50 μm) was used. Here, as the brittle paper, a brittle polyvinyl chloride resin film having brittleness was used.

As the adhesive material between the inlet and the lower paper, a strong adhesive type without an adhesive base material was used, but the standard specification value of the adhesive force to glass against the adhesive used in this example was as follows.
・ Strong adhesive type (standard specification value: 2.66 to 3.42 N / 10 mm)
・ Weak adhesive type (standard specification value: 1.50 to 2.10 N / 10 mm)

Using the above materials, the following labels were prepared, and a card size IC tag label was attached to the adherend glass plate. After 20 minutes or longer, the label was peeled off from that location.

  For comparison, other configurations shown below were also performed. The method of peeling was to remove brittleness as much as possible by using only hands without using tools. The label to be peeled was randomized and the brittle mechanism of the label was unknown.

Comparative example

(Comparative Example 1)
A general IC tag label was cut to give a brittle function. A cut was also made in the inlet substrate of the inlet film.

(Comparative Example 2)
Although it is the same as the structure of this invention, the cut was given only to the lower paper. (No cut in the inlet base.)

(Comparative Example 3)
Although it is the same as the structure of this invention, the same thing was used for top paper adhesion and inlet adhesion. These had the same adhesive strength (general strong adhesion).

  The results of experiments as described above are shown below.

  About Example 1, since the cut | notch part was not visible about the ease of peeling, it was difficult to peel off, preventing a brittle function. As a result, the IC tag communication becomes impossible to communicate, and the external appearance uses brittle paper as the lower paper, so that it is difficult to peel off without impairing the external appearance.

  The ease of peeling for Comparative Example 1 was destroyed when peeled with a constant force, but the result was that the brittle function was likely to be hindered when peeling because the cut portion was visible. IC tag communication has an adhesive base for the inlet adhesive, so the antenna is hard to break, and the appearance is the same for both the top paper and the inlet. The top paper and the inlet film are the same when peeled off. Easy to peel off.

  The ease of peeling for Comparative Example 2 was difficult to remove while hindering the brittle function because the cut portion was not visible. In addition, for IC tag communication, since the inlet base material is not cut, the antenna is not easily destroyed. This time, the inlet base material was not torn because it was PET, but it is assumed that if the material is paper, it will be easily torn. As for the external appearance, since brittle paper is used as the lower paper, it was difficult to peel it off without impairing the external appearance.

  The ease of peeling for Comparative Example 3 was difficult to remove while hindering the brittle function because the cut portion was not visible. However, since the upper paper adhesive and the inlet adhesive have the same adhesive strength, they can be peeled off in the state of “upper paper + inlet”. With respect to the IC tag communication, if the state is “upper paper + inlet”, the IC tag can be destroyed without causing the communication. Moreover, since the external appearance used brittle paper for the lower paper, it was difficult to peel off without impairing the external appearance.

  Based on the above results, a high destructive effect was seen when labeling was performed with this patent configuration.

  Although the present invention has mentioned the IC tag as described above, the industrial applicability is a business that guarantees security that requires a sealing seal or a sealing label, and a business field that requires management such as traceability. To be used.

DESCRIPTION OF SYMBOLS 1 IC chip 2 Antenna 3 Inlet base material 4 Upper paper 5 Upper paper adhesion 6 Base material adhesion 7 Lower paper 8 Lower paper adhesion 9 Substrate 10 Cut 11 Adhesion with substrate (strong viscosity)

Claims (7)

  An IC tag label having an inlet composed of an IC chip and an antenna formed on a base material, and an upper paper and a lower paper laminated on the front and back of the inlet via an adhesive layer, and having an adhesive on the non-IC tag side of the lower paper 2. An IC tag label having a notch in the lower paper.   2. The IC tag label according to claim 1, wherein the cut is provided in a lower paper and an inlet film.   The IC tag label according to claim 1 or 2, wherein brittle paper is used as the lower paper.   The IC tag label according to any one of claims 1 to 3, wherein an antenna circuit exists on an extension of the cut.   The IC tag label according to any one of claims 1 to 4, wherein the adhesive used for the IC tag label uses an adhesive having no adhesive substrate in at least one layer.   6. The IC tag label according to claim 1, wherein the cut is a cut that is not exposed on the outer peripheral edge of the label and on the surface layer.   7. The IC according to claim 1, wherein the adhesive force used for the IC tag label has a stronger adhesive force between the inlet film and the lower paper than an adhesive force between the upper paper and the inlet film. Tag label.