JP2006082776A - Information providing medium attaching method, information providing medium obtaining element, and rubber tire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information providing medium attaching method having stable attaching strength to a rubber member for a long term even when the content of sulfur of a rubber member is low in regard to an information medium formed with a metallic coated layer predominantly composed of cobalt on an attaching surface; an information medium attaching element; and rubber tire equipped with the information providing medium attached at stable strength for a long term. <P>SOLUTION: In the process of vulcanizing a rubber member 18, an adhesion rubber piece 16 includes sulfur of the amount required for vulcanization bonding with the metallic coated layer 15 formed on the attaching surface 11b of a bar code label 10. Therefore, between the metallic coated layer 15 formed on the attaching surface 11b of the bar code label 10 and an adhering rubber piece 16, an adhesion interface layer including vulcanized cobalt is sufficiently generated to securely vulcanization bond the bar code label 10 and the adhering rubber piece 16. On the other hand, the rubber member 18 and the adhering rubber piece 16 are securely bonded by cross linking. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a method for attaching an information providing medium attached to a rubber member, an information providing medium attaching body, and a rubber tire.

  Conventionally, an information providing medium (for example, a barcode label having a one-dimensional or two-dimensional barcode printing surface or a wireless tag capable of writing and reading data) is provided on the surface of a rubber member such as a rubber tire. There are products that can be installed to enable production management for each product and individual management in the distribution process.

  As a method for attaching such an information providing medium to the surface of a rubber member, a bar code label formed of a heat-resistant rigid resin film prepared in advance is attached to the surface of an unvulcanized rubber tire with an adhesive, and the tire is added. A method of adhering to the tire surface in the sulfurization process has been proposed (see, for example, Patent Document 1).

By the way, in recent years, market demand for rubber products on the premise of effective use of resources (recycling, etc.) has increased, and the necessity of distribution management for rubber products shipped to the market has increased more than before. In view of such a situation, as an information providing medium attached to the rubber member of the rubber product, it is ideal that it does not come off from the surface of the rubber member from the time of manufacture / shipment until the end of the life of the rubber product. In the above-described method for attaching an information providing medium (barcode label) using an adhesive material, the information providing medium may be peeled off when the adhesive material is deteriorated due to aging. Therefore, there has been a demand for a method of attaching an information providing medium to the surface of a rubber member with a strength stronger than that in the past and stable in the long term.
JP 2000-221884 A

  Based on the background described above, as a method of attaching the information providing medium to the surface of the rubber member with a longer-lasting stable strength than before, a metal film layer mainly composed of cobalt is formed on the back surface of the information providing medium. An information providing medium mounting method has been devised in which a metal coating layer and rubber on the surface of a rubber member are vulcanized and bonded to attach the information providing medium to the rubber member.

  More specifically, a metal film layer mainly composed of cobalt is formed on the mounting surface (that is, the surface facing the surface of the rubber member) of the information providing medium formed by PET (Polyethylene terephthalate) or the like by sputtering or the like. After the formation, the information providing medium arranged with the metal film layer in contact with the rubber on the surface of the rubber member is subjected to a vulcanization step together with the rubber member. In this vulcanization process, the metal film layer of the information providing medium undergoes a sulfurization reaction due to sulfur contained in the rubber of the rubber member, and an adhesive interface layer containing cobalt sulfide (CoxS) is generated between the rubber member and the metal film layer. Thus, the information providing medium and the rubber member are firmly vulcanized and bonded.

  However, in the information providing medium mounting method using such a metal coating layer, it is difficult to maintain a strong adhesive strength for a long period depending on the sulfur content of the rubber member to be vulcanized and bonded to the metal coating layer. Turned out to be.

  That is, when the rubber member has a high sulfur content, a sufficient adhesive interface layer is generated between the rubber member and the metal coating layer, and the information providing medium is made strong and stable in the long term. However, when the sulfur content of the rubber member is low, the formation of an adhesive interface layer is insufficient, and the adhesive strength immediately after vulcanization is strong, but the environment in which it is used thereafter. The adhesive strength may gradually decrease due to (for example, heating or vibration for a long time).

  For example, as an example of a rubber product having a rubber member, a heavy duty tire mounted on a vehicle such as a truck can be cited. A side rubber with a low sulfur content is disposed on the side portion of the heavy duty tire to increase the side rigidity, and an information providing medium is applied to such a side rubber by a method using the metal film layer described above. When attached, the adhesive strength gradually decreases due to heat, vibration, and the like during vehicle travel.

  Similarly, when an information providing medium is attached to a side rubber containing a large amount of an anti-aging agent (for example, aldehyde, ketone, amine reaction product, imidazoles, phenols or derivatives thereof) In some cases, the adhesive strength gradually decreases due to alteration or movement of the inhibitor.

  Therefore, in view of the above problems, the present invention relates to an information providing medium attached to a rubber member, the information providing medium having a metal coating layer containing cobalt as a main component on the attachment surface, and the rubber member contains sulfur. Even when the amount is small, the attachment strength to the rubber member is strong and can be attached with a long-term stable information providing medium, the information provision medium attachment body, and the strong and long-term stable strength. Another object of the present invention is to provide a rubber tire having an information providing medium.

  In order to achieve the above-described object, the present invention has the following features. First, the first feature of the present invention is that an information providing medium (for example, the mounting surface 11b) having a mounting surface (for example, the mounting surface 11b) that faces the surface (for example, the surface 18a) of a rubber member (for example, the rubber member 18). , A method of attaching an information providing medium for attaching the barcode label 10) to the rubber member, the step of forming a metal coating layer (for example, the metal coating layer 15) containing cobalt as a main component on the mounting surface; A fixed rubber piece (for example, fixed rubber piece 16) containing sulfur in an amount necessary for vulcanization adhesion with the metal film layer on the surface of the rubber member outward from the surface of the rubber member; The information providing medium in which the mounting surface on which the metal coating layer is formed is opposed to the rubber surface is arranged in a layered manner, the fixed rubber piece arranged in a layered manner and the information provision With the body, and summarized in that a step of vulcanizing the rubber member.

  According to this feature, in the rubber member vulcanization process, the information providing medium is attached to the rubber member with the fixed rubber piece interposed therebetween.

  More specifically, since the fixed rubber pieces contain sulfur in an amount necessary for vulcanization adhesion with the metal film layer formed on the mounting surface of the information providing medium, they are arranged in layers. In the process of vulcanizing the rubber member together with the fixed rubber piece and the information providing medium, an adhesive interface layer containing cobalt sulfide (CoxS) is sufficient between the metal film layer formed on the mounting surface of the information providing medium and the fixed rubber piece. The information providing medium and the fixed rubber piece are firmly vulcanized and bonded to each other, and the rubber member and the fixed rubber piece are firmly bonded by cross-linking.

  Accordingly, the present invention relates to an information providing medium attached to a rubber member, and the method for attaching the information providing medium in which a metal coating layer containing cobalt as a main component is formed on the attachment surface, wherein the rubber member has a low sulfur content. In addition, it is possible to provide a method for attaching an information providing medium whose attachment strength to the rubber member is stable for a long period of time.

  Furthermore, in order to achieve the above-mentioned object, the second feature of the present invention is that the information providing medium having a mounting surface on which a metal coating layer containing cobalt as a main component is formed, and vulcanization of the metal coating layer. The gist of the present invention is to provide an information providing medium attachment body including a fixed rubber piece containing sulfur necessary for adhesion and vulcanized and bonded to the metal coating layer.

  According to the information providing medium mounting body having such characteristics, the fixed rubber piece contains sulfur in an amount necessary for vulcanization and adhesion to the metal film layer formed on the mounting surface of the information providing medium. An adhesive interface layer containing cobalt sulfide (CoxS) is sufficiently generated between the layer and the fixed rubber piece, and the information providing medium and the fixed rubber piece can be firmly vulcanized and bonded. Further, even when the rubber member to which the fixed rubber piece is bonded has a low sulfur content, the fixed rubber piece can be firmly bonded to the rubber member by cross-linking.

  Therefore, regarding an information providing medium attached to a rubber member and having an attachment surface formed with a metal coating layer mainly composed of cobalt, the sulfur content of the rubber member to which the information providing medium is attached is Even if the amount is small, it is possible to provide an information providing medium attachment body in which the attachment strength to the rubber member is stable for a long time.

  Furthermore, in order to achieve the above-mentioned object, a third feature of the present invention is a rubber tire provided with an information providing medium, wherein the information providing medium is mounted on a side facing the surface of a rubber member of the rubber tire. On the surface, a metal coating layer containing cobalt as a main component is formed, and on the surface of the rubber member of the rubber tire, a fixed rubber piece containing sulfur in an amount necessary for vulcanization adhesion to the metal coating layer Is a rubber tire in which the information providing medium is attached by vulcanizing and bonding the metal coating layer to the surface of the fixed rubber piece that is outside the tire.

  According to this feature, since the fixed rubber piece contains an amount of sulfur necessary for vulcanization and adhesion with the metal film layer formed on the mounting surface of the information providing medium, the vulcanized and adhered metal film layer Adhesive interface layer containing cobalt sulfide (CoxS) is sufficiently formed between the adhesive rubber piece and the fixed rubber piece. Further, the rubber member of the rubber tire and the fixed rubber piece are firmly bonded by cross-linking.

  Therefore, regardless of the sulfur content of the rubber member of the rubber tire, it is possible to provide a rubber tire having an information providing medium attached with a stable strength over the long term.

  To provide a method for attaching an information providing medium with a long-term stable mounting strength to a rubber member, an information providing medium mounting body, and a rubber tire provided with an information providing medium attached with a long-term stable strength. it can.

(How to install information media)
A method for attaching an information providing medium according to the present invention will be described with reference to the drawings. FIG. 1 is a view showing a barcode label 10 which is an example of an information providing medium according to the present embodiment. As shown in FIG. 1A, the barcode label 10 has a horizontally long rectangular shape in plan view. Further, the barcode label 10 includes a base material layer 11 and a protective layer 12 as shown in FIG. Bar code printing 21 as shown in FIG. 1A is applied to the surface 11a of the base material layer 11, and a protective layer 12 having translucency is covered. The barcode printing 21 is visible through the protective layer 12 having translucency, and the printing surface is protected by the protective layer 12. Moreover, the base material layer 11 and the protective layer 12 are each formed by PET (Polyethylene terephthalate).

  Next, a method of attaching the barcode label 10 as an information providing medium to the rubber member will be described with reference to FIGS. 2A to 2D are diagrams schematically showing a process of attaching the barcode label 10 to the rubber member 18 in time series. FIG. 3 is a flowchart of a process in which the barcode label 10 is attached to the rubber member 18.

  Here, it is assumed that the rubber member 18 is in a state of raw rubber before vulcanization before the processing of the flowchart shown in FIG. 3 is executed.

  In step S10 shown in FIG. 3, first, a metal containing cobalt as a main component on the back surface of the barcode label 10 (that is, the attachment surface 11b of the barcode label 10 on the side facing the rubber surface 18a of the rubber member 18). A coating layer 15 is formed (see FIG. 2A).

  In the present embodiment, a conventional sputtering method is used as a method of forming the metal coating layer 15 mainly composed of cobalt on the attachment surface 11b of the barcode label 10. According to the sputtering method, it is possible to form a stable metal film layer 15 on a relatively heat-sensitive resin material such as a bar code label 10 formed of a resin such as PET. Compared to the metal coating layer formed by vapor deposition by the method, it is possible to form the metal coating layer 15 that has excellent adhesion to the attachment surface of the barcode label 10 and is difficult to peel off. Therefore, in this embodiment for the purpose of attaching the bar code label 10 to the rubber member 18 with a long-term stable strength, the sputtering method is suitable as a method for forming the metal coating layer 15.

  It is also possible to attach the fixed rubber piece 16 to the rubber member 18 by forming the metal film layer 15 of copper. However, in order to obtain stronger adhesive strength, the metal film layer 15 is mainly made of cobalt. It is preferable that the material is a component.

  In step S20 shown in FIG. 3, the fixed rubber piece 16 is temporarily fixed to the metal film layer 15 formed on the attachment surface of the barcode label 10 (see FIG. 2B). At this time, it is preferable to apply a small amount of pressure-sensitive adhesive for temporary fixing to either the metal film layer 15 or the surface of the fixed rubber piece 16 facing each other.

  The fixed rubber piece 16 is a rubber composition containing an amount of sulfur necessary to be vulcanized and bonded to the metal film layer 15 in a vulcanization process described later, and is necessary for vulcanization bonding. The sulfur content may be, for example, a sulfur content equivalent to the coating rubber that covers the belt cord of the belt layer that is a constituent member of the rubber tire.

  In step S30 shown in FIG. 3, the fixed rubber piece 16 to which the bar code label 10 is temporarily fixed is further temporarily fixed to the rubber surface 18a of the rubber member 18 (see FIG. 2C). At this time, it is preferable to apply a small amount of adhesive for temporarily fixing to either the fixed rubber piece 16 or the surface of the rubber surface 18a opposite to each other. Since it is also an unvulcanized rubber, it can be temporarily fixed without applying an adhesive.

  By the steps S20 and S30 described above, the fixing rubber piece 16 and the mounting surface 11b on which the metal coating layer 15 is formed are formed on the rubber surface 18a of the rubber member 18 from the rubber surface 18a outward. The barcode label 10 opposed to the rubber surface 18a is arranged in a layered manner (see FIG. 2D).

  In addition, as an order of the arrangement | positioning process of such a fixed rubber piece 16 and the barcode label 10, step S20 and step S30 may be reverse. That is, after the fixed rubber piece 16 is temporarily fixed on the rubber surface 18 a of the rubber member 18, the bar code label 10 may be temporarily fixed on the fixed rubber piece 16 and arranged in layers.

  Next, in step S40 shown in FIG. 3, as described above, the rubber member 18 in which the fixed rubber piece 16 and the barcode label 10 are arranged in layers is vulcanized. Through this vulcanization process, the metal film layer 15 of the bar code label 10 undergoes a sulfurization reaction due to sulfur contained in the rubber of the fixed rubber piece 16, and cobalt sulfide (CoxS) is formed between the fixed rubber piece 16 and the metal film layer 15. The bar code label 10 and the fixed rubber piece 16 are vulcanized and bonded together. On the other hand, the fixed rubber piece 16 and the rubber surface 18a of the rubber member 18 are bonded by cross-linking by the same process.

  As a result, the bar code label 10 is attached to the rubber member 18 with a long-term stable strength across the fixed rubber piece 16.

(Structure of rubber tire)
Next, the structure of the rubber tire according to the present invention will be described with reference to the drawings. FIG. 4 is a partial cross-sectional perspective view of the rubber tire 1 to which a barcode label 10 as an information providing medium is attached. A rubber tire 1 shown in FIG. 4 is a rubber product including a plurality of types of rubber members, and is an example in which a barcode label 10 is attached to a side rubber 3 that is a rubber member forming a sidewall. The rubber tire 1 includes a rubber member such as a tread rubber 2 that forms a tread portion and an inner liner rubber 4 that forms the inner surface side of the rubber tire 1 in addition to the side rubber 3.

  FIG. 5 is a cross-sectional view in the direction perpendicular to the barcode label attachment surface 11b in the rubber tire 1 to which the barcode label 10 shown in FIG. 4 is attached. The horizontal direction in the figure is the longitudinal direction of the barcode label 10.

  The configuration of the bar code label 10 shown in the figure is the same as that of the bar code label 10 described with reference to FIG. 1, and the material thereof is also made of PET (Polyethylene terephthalate). The rubber tire 1 has elasticity or stretchability so that it can be deformed to an equal or higher degree according to the deformation amount of the attached rubber tire 1.

  On the attachment surface 11b of the bar code label 10, a metal film layer 15 mainly composed of cobalt is formed by a sputtering method.

  In the barcode display 21 (see FIG. 1) of the barcode label 10 according to the present embodiment, information on the production time (date, etc.) of the rubber tire 1 and production management information such as the production location and production lot number are displayed. In addition, tire type information such as tire type and tire size is recorded.

  Further, as shown in FIG. 5, a fixed rubber piece 16 is crosslinked and bonded to the surface of the side rubber 3 of the rubber tire 1.

  Further, a metal film layer 15 formed on the bar code label 10 is vulcanized and bonded to the surface 16b of the sticking rubber piece 16 on the outer side of the tire.

  The fixed rubber piece 16 is a rubber composition containing sulfur in an amount necessary to be vulcanized and bonded to the metal film layer 15. The sulfur content of the fixed rubber piece 16 is the same as that of the fixed rubber piece 16 described in step S20 of FIG.

  In FIG. 5, the length in the longitudinal direction of the fixed rubber piece 16 in plan view is substantially the same as the length in the longitudinal direction of the barcode label 10 in plan view, but the present invention is not limited to this. For example, as shown in FIG. 6, the dimension L2 in the longitudinal direction of the fixed rubber piece 16 may be longer than the dimension L1 in the longitudinal direction of the barcode label 10. Similarly, the dimension in the short direction of the fixed rubber piece 16 may be longer than the dimension in the short direction of the barcode label 10.

  The rubber member of the rubber tire 1 to which the barcode label 10 that is an information providing medium is attached is not limited to the side rubber 3. The rubber member of the rubber tire 1 to which the barcode label 10 is attached may be a rubber member other than the side rubber 3 (for example, the tread rubber 2 or the inner liner rubber 4).

(Structure of information provision medium attachment)
Next, the structure of the information providing medium attachment body 28 according to the present invention will be described with reference to FIG. The information providing medium mounting body 28 is an amount necessary for vulcanization adhesion between the bar code label 10, which is an information providing medium in which the metal coating layer 15 mainly composed of cobalt is formed on the mounting surface 11b, and the metal coating layer 15. It is the attachment body which comprises the fixed rubber piece 16 containing the sulfur.

  When the barcode label 10 as an information providing medium is to be attached to a rubber member (for example, the side rubber 3 of the rubber tire 1), it is preferable to prepare such an information providing medium attachment body 28 in advance.

  The information providing medium attachment body 28 may be a structure in which the barcode label 10 and the fixed rubber piece 16 are temporarily fixed with an adhesive or the like in advance, or the barcode label 10 and the fixed rubber piece 16 may be provided. It may be in a separate state.

(Modification)
A modification of the bar code label as an information providing medium is shown in FIG. As shown in FIG. 7B, the barcode label 30 shown in FIG. 7 includes a base material layer 31 and a protective layer 32, and barcode printing 41 as shown in FIG. 7A is performed. . The surface 31a of the base material layer 31 and the bar code print 41 are the same as the bar code label 10 shown in FIG. In addition, the base material layer 31 and the protective layer 32 are both PET as the material of the barcode label 10 shown in FIG.

  When the rubber member to which the barcode label 30 is attached is the rubber member of the rubber tire 1 described above, the barcode printing 41 includes information on the production time (for example, production date) of the rubber tire 1, the production location, and the production. In addition to production management information such as a lot number, information such as tire type information such as tire type and tire size is recorded.

  Further, in the barcode label 30 according to this modification, a small wireless tag 42 (RFID tag) is embedded in advance in forming the base material layer 31.

  The wireless tag 42 is provided with a storage element for storing information, and an IC chip, an antenna, and the like so that the information stored in the storage element can be read from the outside in a non-contact manner.

  In the case where the rubber member to which the barcode label 30 is attached is the rubber member of the rubber tire 1 described above, in addition to the production management information and the tire type information recorded on the barcode display 41, the storage element of the wireless tag 42 is provided. In addition, information on the results of performance / quality tests (for example, tire uniformity tests) in the pre-shipment inspection, information on the tire shipping stage (for example, shipping date), shipping destination information (for example, shipping destination information) Such as customer information) is recorded.

  In recent years, a wireless tag capable of writing information to the storage element from the outside in a non-contact manner has been developed. If the wireless tag 42 is a wireless tag capable of such reading / writing, a rubber product can be used. It is also possible to write distribution management information such as information relating to reuse (for example, rubber tire 1) (for example, history of recycling processing) at a desired timing. Further, if necessary, other information can be deleted while leaving specific information.

  In the barcode label 30 in which the wireless tag 42 is embedded, the thickness and weight of the barcode label 30 (particularly, the base material layer 31) will increase. In order to attach to a rubber member (for example, the side rubber 3 of the rubber tire 1) with a stable strength, a stronger adhesive strength is required, and the present invention is particularly effective.

  Further, as the configuration of the information providing medium, it is not indispensable that the barcode printing 41 is printed like the barcode label 30, and the information providing medium is simply an information providing medium in which the wireless tag 42 is embedded. Also good.

(Action / Effect)
According to the method for attaching the barcode label 10 which is an information providing medium according to the present embodiment, the fixed rubber piece 16 is necessary for vulcanization adhesion with the metal film layer 15 formed on the attachment surface 11b of the barcode label 10. Since a large amount of sulfur is contained, it is formed on the attachment surface 11b of the barcode label 10 in the step of vulcanizing the rubber member 18 together with the fixed rubber pieces 16 and the barcode label 10 arranged in layers. While the adhesive interface layer containing cobalt sulfide (CoxS) is sufficiently generated between the metal film layer 15 and the fixed rubber piece 16, the barcode label 10 and the fixed rubber piece 16 are firmly vulcanized and bonded, The rubber member 18 and the fixed rubber piece 16 are firmly bonded by cross-linking.

  Therefore, even when the sulfur content of the rubber member 18 is small, it is possible to provide a method for attaching the bar code label 10 whose attachment strength to the rubber member 18 is stable for a long time.

  Further, according to the information providing medium attachment body 30 according to the present embodiment, the amount of sulfur necessary for vulcanization adhesion with the metal film layer 15 formed on the attachment surface 11b of the barcode label 10 is fixed to the fixed rubber piece 16. Therefore, an adhesive interface layer containing cobalt sulfide (CoxS) is sufficiently generated between the metal film layer 15 and the fixed rubber piece 16, and the bar code label 10 and the fixed rubber piece 16 are firmly added. Sulfur can be bonded. Further, even when the content of sulfur in the rubber member to which the fixed rubber piece 16 is bonded is small, the fixed rubber piece 18 can be firmly bonded to the rubber member by crosslinking.

  Therefore, even when the sulfur content of the rubber member to which the barcode label 10 is to be attached is small, it is possible to provide an information providing medium attachment body whose attachment strength to the rubber member is stable for a long time.

  Further, according to the rubber tire 1 according to the present embodiment, the fixed rubber piece 16 contains sulfur in an amount necessary for vulcanization and adhesion with the metal film layer 15 formed on the attachment surface 11b of the barcode label 10. Therefore, an adhesive interface layer containing cobalt sulfide (CoxS) is sufficiently generated between the vulcanized and bonded metal film layer 15 and the fixed rubber piece 16. Further, the side rubber 3 and the fixed rubber piece 16 of the rubber tire 1 are firmly bonded by cross-linking.

  Therefore, regardless of the sulfur content of the side rubber 3 of the rubber tire 1, it is possible to provide the rubber tire 1 including the barcode label 10 attached with a stable strength over a long period of time.

It is a figure which shows the barcode label 10 which concerns on this embodiment. It is the figure which represented typically the process in which the barcode label 10 was attached to the rubber member 18 along a time series. 4 is a flowchart of a process for attaching the barcode label 10 to the rubber member 18. 1 is a partial cross-sectional perspective view of a rubber tire 1 to which a barcode label 10 is attached. It is sectional drawing of the perpendicular direction with respect to the barcode label attachment surface 11b in the rubber tire 1 to which the barcode label 10 was attached. 2 is a diagram comparing a longitudinal dimension L2 of the fixed rubber piece 16 and a longitudinal dimension L1 of the barcode label 10. FIG. It is a figure which shows the modification of the barcode label as an information provision medium.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Rubber tire, 2 ... Tread rubber, 3 ... Side rubber, 4 ... Inner liner rubber, 10, 30 ... Bar code label, 11, 31 ... Base material layer, 11a, 31a ... Surface of base material layer, 11b, 31b ... Installation Surface, 12, 32 ... protective layer, 15 ... metal coating layer, 16 ... fixed rubber piece, 18 ... rubber member, 18a ... rubber surface, 21, 42 ... barcode printing, 28 ... information providing medium attachment, 42 ... wireless Method tag

Claims (3)

An information providing medium attaching method for attaching an information providing medium having an attachment surface on the side facing the surface of the rubber member to the rubber member,
Forming a metal coating layer mainly composed of cobalt on the mounting surface;
On the surface of the rubber member, a fixed rubber piece containing an amount of sulfur necessary for vulcanization adhesion with the metal film layer and the metal film layer are formed outward from the surface of the rubber member. Arranging the information providing medium with the mounting surface facing the rubber surface in a layered manner; and
A method for attaching an information providing medium, comprising: a step of vulcanizing the rubber member together with the fixed rubber pieces and the information providing medium arranged in a layered manner. An information providing medium having a mounting surface on which a metal coating layer mainly composed of cobalt is formed;
An information providing medium attachment body comprising: a fixed rubber piece containing sulfur in an amount necessary for vulcanization adhesion to the metal coating layer and vulcanized to the metal coating layer. A rubber tire comprising an information providing medium,
A metal coating layer mainly composed of cobalt is formed on the mounting surface on the side of the information providing medium that faces the surface of the rubber member of the rubber tire.
On the surface of the rubber member of the rubber tire, a fixed rubber piece containing sulfur in an amount necessary for vulcanization adhesion with the metal film layer is crosslinked and bonded,
A rubber tire characterized in that the information providing medium is attached by vulcanizing and bonding the metal film layer to a surface of the fixed rubber piece that is outside the tire.

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