CN1915647A - Method for attaching rfid tag to tyre - Google Patents

Abstract

The present invention provides a method for attaching an RFID tag to a tyre. The method includes: a step of coating thermosetting adhesive on RFID tag by a thickness of 5 mum to 40 mum; a step of attaching said RFID tag to the inner of a tyre; a step of vulcanizing said tyre. As a result, a tyre which has improved durability, excellent RFID identifying distance and wherein the adhesive between the RFID tag and the tyre can not be destroyed can be produced by forming a sufficient adhering. Thus, the identifying, safekeeping and managing of the tyre is easy to perform.

Description

Method for attaching RFID tags to tires

technical field

The present invention relates to a method for attaching RFID tags (Radio Frequency Identification Tag: radio frequency identification tags) to tires, in particular, to a method for attaching RFID tags to tires as follows, which can improve the safety of RFID tags Adhesive force and durability of tires prevent RFID tags from being damaged even under severe usage conditions and maintain a sufficient recognition distance.

Background technique

In order to manage the manufacture, shipment and distribution of automobile tires, it is necessary to quickly grasp the unique information about the tires such as model, serial number, manufacturing method, characteristics, processing history, and use history.

In particular, it is stipulated in the Manufactured Product Liability Law that when a defect in a product causes damage to the life, person, or property of others, the responsibility for compensation for the loss lies with the manufacturer, regardless of negligence. tire management.

In addition, the U.S. Federal Government Transportation Agency stipulates that the manufacturing number and the loading vehicle identification number (NIN) of each tire are included in the warranty content of the tire so that it can be identified and stored.

Therefore, in order to manage each tire, the manufacturer of the tire has developed a method of attaching an RFID tag capable of storing product history and usage history to the tire.

The RFID tag is a radio frequency identification tag that can store inherent information such as the manufacturing date, manufacturer, and product number of the tire, and can effectively manage the entire logistics information from the tire production process to sales and disposal. It consists of an ultra-small IC chip and an antenna. constitute.

As a prior art method of attaching RFID tags to tires, there are the following methods: on the surface of an RFID tag composed of an IC chip capable of storing and identifying manufacturing history and usage history and an antenna, a metal and Brasscoating of rubber, etc., and bonding it between the RFID tag and the tire rubber.

However, in this prior art RFID label attachment method, there is a problem that the RFID cannot be recognized due to the damage of the RFID label under severe usage conditions such as tires.

Contents of the invention

The present invention is proposed in order to solve the problems of the above-mentioned prior art. The purpose of the present invention is to provide a method for attaching RFID tags to tires. Detached or damaged tire.

In order to achieve the above object, the method for attaching RFID tags to tires of the present invention includes: a step of applying a thermosetting adhesive to the RFID tag with a thickness of 5-40 μm; a step of attaching an RFID tag of a permanent adhesive to the inside of the tire; and a step of vulcanizing the tire.

The thermosetting adhesive is selected from at least one of halogenated (halogenated) adhesives, isocyanate adhesives, epoxy resin adhesives, acrylic resin adhesives and polyurethane adhesives kind.

The RFID tag coated with the thermosetting adhesive is preferably attached inside the tire at a position 5 to 50 mm above the upper end of the bead filler.

Description of drawings

Fig. 1 is the structural representation that is used for the RFID label of the present invention;

Fig. 2 is a schematic diagram of a tire attached with an RFID tag according to an embodiment of the present invention.

Detailed ways

Next, the present invention will be described in further detail.

The method for attaching the RFID tag to the tire of the present invention comprises: a step of coating a thermosetting adhesive on the RFID tag with a thickness of 5-40 μm; coating the RFID tag coated with the thermosetting adhesive the step of attaching to the inside of the tire; and the step of vulcanizing the tire.

As shown in FIG. 1, the RFID tag used in the present invention is composed of an IC chip 1 capable of storage and identification, an antenna 2, and a heat-resistant polymer film 3 for protecting the IC chip and antenna.

The heat-resistant polymer film 3 is used to prevent deformation of the RFID tag during vulcanization and to protect the IC chip 1 and antenna 2 when the tire is running, and is preferably a film with a melting temperature of 180° C. or higher. Examples of the heat-resistant polymer film 3 include polyamide resins, epoxy resins, acrylic resins, and the like.

The adhesive strength of the resin and rubber used for the RFID tag is reduced. When a thermoplastic resin adhesive is used to attach the RFID tag to the tire, it will be denatured during high-temperature vulcanization, and the RFID tag will be damaged during fatigue. out of shape.

Therefore, in the present invention, a thermosetting adhesive is used as a method of bonding the heat-resistant polymer film of the RFID tag to the rubber. The use of a thermosetting adhesive can improve the fatigue resistance of the tire during running without causing a decrease in the adhesive force at high temperature.

As the thermosetting adhesive used in the present invention, it is possible to use adhesives selected from halide-based adhesives, isocyanate-based adhesives, epoxy resin-based adhesives, acrylic resin adhesives, and polyurethane-based adhesives. One of them or two or more in combination.

The thermosetting adhesive used in the present invention is coated on the RFID tag. The RFID tag coated with the thermosetting adhesive is attached to the inside of the tire when the tire is molded. By the heat applied during tire vulcanization, the heat-resistant polymer film of the RFID tag and the rubber react to form a chemical bond, thereby forming a bond between the heat-resistant polymer film and the rubber.

The coating thickness of the thermosetting adhesive used in the present invention is preferably 5 to 40 μm, more preferably 10 to 30 μm. When the coating thickness of the thermosetting adhesive is less than 5 μm, the adhesive force is insufficient, so the RFID tag and the rubber will be separated when the tire is running, which is not suitable; when the thickness exceeds 40 μm, the stress will be concentrated on the tire It is not suitable if it is on the adhesive layer when driving, and it will be damaged due to this.

FIG. 2 shows a tire to which an RFID tag is attached according to the present invention. As shown in FIG. 2, the tire used in the present invention includes an inner liner 21, a sidewall portion 22, a carcass 23, a bead filler 24, a bead wire 25, and a rim pad 26, coated with the thermosetting The adhesive RFID tag is preferably attached inside the tire at a position 5 to 50 mm above the upper end of the bead filler.

The present invention will be described in detail below through the examples, but the following examples are only used to illustrate the present invention, and the scope of the present invention is not limited thereto.

Examples 1-3

A halide-based adhesive (Lord Chemical Company, Chemlok 6254) was coated on the RFID tag at the thickness described in Table 1 below. Next, attach the RFID tag to the inside of the tire (Hankook tire, specification: P235/70R17 RH03) at a position above 20 mm from the upper end of the bead filler. Then, the tire was vulcanized at 160° C. for 20 minutes, thereby manufacturing a tire with an RFID tag attached thereto.

Comparative example 1-4

In Comparative Example 1, the RFID tag was attached to the tire without applying an adhesive. In Comparative Example 2, a thermoplastic resin adhesive (such as Lord Corporation's Chemlok AP-133 product) was applied as an adhesive. Binder. Except for this, tires with RFID tags were produced by the same method as in Example 1.

For the tires with RFID tags obtained in Examples 1 to 3 and Comparative Examples 1 to 4, evaluations of indoor durability and RFID tag recognition distance were performed. The results are shown in Table 1 below.

In the present invention, physical properties of tires to which RFID tags are attached are evaluated by the following methods.

<Physical property evaluation method>

1) Indoor durability performance: set the tire running speed to 81Km/h, apply a load of 710Kg at the beginning, after the tire runs, increase the load by 15% every 4 hours, and carry out the test until an accident occurs on the tire, and Travel time was measured.

2) RFID tag recognition distance: Using RFID recognizer (MPR2010 of AWID Company), measure the recognition distance of the RFID tag attached to the tire after the indoor durability test. When the chip or antenna of the RFID tag is damaged, the distance is not recognized.

<table 1> Example 1 Example 2 Example 3 Comparative example 1 Comparative example 2 Comparative example 3 Comparative example 4 Adhesive Coating Thickness Halide binder (μm) 10 20 30 - - 3 45 Thermoplastic resin binder (μm) - - - - 20 - - Indoor Durability Driving time (hr) 50 58 53 15 27 32 37 RFID identification Recognition distance (cm) 110 115 105 0 0 0 0

From the results in Table 1 above, it can be known that the bonding between the RFID tag and the rubber cannot be achieved without the use of an adhesive. The driving time is very short, the RFID tag will be damaged and the RFID tag cannot be recognized. As an adhesive, when using a thermoplastic resin adhesive, although the driving time is prolonged, due to the heat generated during driving, the bond between the RFID tag and the rubber is released, thereby destroying the RFID tag, making it impossible to Identify RFID.

In addition, when the coating thickness of the halogenated adhesive is less than 5 μm, although the running time becomes longer, because the coating thickness of the adhesive is thin, the adhesion between the RFID tag and the rubber is insufficient, so when the tire is running The adhesive part between the RFID tag and the rubber is damaged, and the RFID cannot be recognized. When the coating thickness of the halogenated adhesive is greater than 40 μm, the stress will be concentrated on the adhesive layer when the tire is running, which will damage the RFID tag and make it impossible to identify the RFID.

On the contrary, according to the tire with the RFID tag attached according to the present invention, the bonding between the RFID tag and the tire is sufficient, so that the driving time can be greatly extended, and the bonding between the RFID tag and the rubber will not be destroyed even after driving, showing Excellent RFID identification distance.

According to the method of attaching the RFID tag to the tire of the present invention, the thermosetting adhesive is coated on the RFID tag with a certain thickness, and the RFID tag is attached to the tire, thus the RFID tag and the A sufficient bond is formed between the tires, which improves the durability of the tire, does not destroy the bond between the RFID tag and the tire, and has an excellent RFID identification distance. The method can easily identify, store and manage tires.

Claims (4)

1. A method for attaching an RFID tag to a tire, comprising: The step of coating the thermosetting adhesive on the RFID label with a thickness of 5-40 μm; a step of attaching the RFID tag coated with the thermosetting adhesive inside the tire; and The step of vulcanizing the tire. 2. The method for attaching RFID tags to tires according to claim 1, wherein the thermosetting adhesive is a halide-based adhesive, an isocyanate-based adhesive, an epoxy resin-based adhesive, etc. At least one of adhesive, acrylic resin adhesive and polyurethane adhesive. 3. the method that RFID tag is attached to tire according to claim 1, is characterized in that, the RFID tag that is coated with described thermosetting adhesive is attached to described tire inside from bead filler ( 24) at a position above the upper end of 5-50mm. 4. The tire with the RFID tag affixed by the method according to any one of claims 1 to 3.

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