A sandwich type RFID foam label

Abstract

The utility model discloses a kind of sandwich type RFID foam labels, including lower foam, the bottom of lower foam is fixedly connected with adhesive layer one, the top of lower foam is fixedly connected with anti-metal interference layer, the top of anti-metal interference layer is fixedly connected with RFID chip, the top of RFID chip is provided with upper foam, the bottom of upper foam is fixedly connected with adhesive layer two used in cooperation with lower foam, the anti-metal interference layer includes the soft magnetic sheet fixedly connected at the top of lower foam.The utility model first pass through lower foam to metal, prevent metal internal eddy current effect absorption RFID chip's electromagnetic energy, then pass through soft magnetic sheet, carbon fiber sheet and silica aerogel absorption metal reflection radio frequency signal, at this moment, radio frequency signal reflected by metal can be absorbed, so that the energy that read-write ware emits can effectively reach RFID chip, to reach the effect of good anti-metal interference capability in this way.

Description

Technical Field

[0001] This utility model relates to the field of RFID tag technology, specifically a sandwich-type RFID foam tag. Background Technology

[0002] RFID tags are electronic tags that automatically identify target objects and acquire data through radio signals. They are characterized by non-contact operation, high-efficiency identification, and simultaneous processing of multiple tags, and are widely used in logistics, retail, asset management and other fields.

[0003] RFID tags are used in the process of marking products in the factory. Traditional RFID tags have poor resistance to metal interference. The metal surface will strongly reflect radio frequency signals, resulting in signal energy attenuation or path confusion. At the same time, the eddy current effect inside the metal will absorb some electromagnetic energy, significantly weakening the energy received by the tag, thus causing the RFID tag to be completely unable to respond to read and write commands. Utility Model Content

[0004] To address the problems mentioned in the background art, the purpose of this utility model is to provide a sandwich-type RFID foam tag that has the advantage of good metal interference resistance. This solves the problems of traditional RFID tags having poor metal interference resistance, strong reflection of radio frequency signals on the metal surface leading to signal energy attenuation or path confusion, and the absorption of some electromagnetic energy by the eddy current effect inside the metal, which significantly weakens the energy received by the tag, thus causing the RFID tag to be completely unable to respond to read and write commands.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sandwich-type RFID foam tag, comprising a lower foam, an adhesive layer one fixedly connected to the bottom of the lower foam, an anti-metal interference layer fixedly connected to the top of the lower foam, an RFID chip fixedly connected to the top of the anti-metal interference layer, an upper foam disposed on the top of the RFID chip, and an adhesive layer two used in conjunction with the lower foam fixedly connected to the bottom of the upper foam.

[0006] The anti-metal interference layer includes a soft magnetic sheet fixedly connected to the top of the lower foam, a carbon fiber sheet fixedly connected to the top of the soft magnetic sheet, and a silica aerogel fixedly connected to the top of the carbon fiber sheet.

[0007] As a preferred embodiment of this invention, the soft magnetic sheet is an amorphous soft magnetic alloy sheet.

[0008] As a preferred embodiment of this invention, the carbon fiber sheet is a viscose-based carbon fiber sheet.

[0009] As a preferred embodiment of this invention, the silica aerogel is a hydrophobic silica aerogel.

[0010] As a preferred embodiment of this invention, a label is fixedly connected to the top of the upper foam.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model first uses foam to block the metal, preventing the eddy current effect inside the metal from absorbing the electromagnetic energy of the RFID chip. Then, it uses soft magnetic sheet, carbon fiber sheet and silica aerogel to absorb the radio frequency signal reflected by the metal. At this time, the radio frequency signal reflected by the metal can be absorbed, so that the energy emitted by the reader can effectively reach the RFID chip, thereby achieving a good anti-metal interference effect.

[0013] 2. By setting the soft magnetic sheet as an amorphous soft magnetic alloy sheet, this utility model can increase the flexibility of the soft magnetic sheet, making it less prone to bending and damage. Attached Figure Description

[0014] Figure 1 This is a three-dimensional view of the RFID foam tag structure of this utility model;

[0015] Figure 2 This is a bottom view of the RFID foam tag structure of this utility model;

[0016] Figure 3 This is an exploded view of the RFID foam tag structure of this utility model;

[0017] Figure 4 This is a partial sectional view of the front view of the anti-metal interference layer structure of this utility model.

[0018] In the diagram: 1. Lower foam; 2. Adhesive layer one; 3. Anti-metal interference layer; 31. Soft magnetic sheet; 32. Carbon fiber sheet; 33. Silica aerogel; 4. RFID chip; 5. Upper foam; 6. Adhesive layer two; 7. Label paper. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figures 1 to 4As shown, the present invention provides a sandwich-type RFID foam tag, including a lower foam 1, an adhesive layer 2 fixedly connected to the bottom of the lower foam 1, an anti-metal interference layer 3 fixedly connected to the top of the lower foam 1, an RFID chip 4 fixedly connected to the top of the anti-metal interference layer 3, an upper foam 5 disposed on the top of the RFID chip 4, and an adhesive layer 6 used in conjunction with the lower foam 1 fixedly connected to the bottom of the upper foam 5.

[0021] The anti-metal interference layer 3 includes a soft magnetic sheet 31 fixedly connected to the top of the lower foam 1, a carbon fiber sheet 32 ​​fixedly connected to the top of the soft magnetic sheet 31, and a silica aerogel 33 fixedly connected to the top of the carbon fiber sheet 32.

[0022] refer to Figure 4 The type of soft magnetic sheet 31 is an amorphous soft magnetic alloy sheet.

[0023] As a technical optimization of this utility model, by setting a soft magnetic sheet 31 of amorphous soft magnetic alloy, the flexibility of the soft magnetic sheet 31 can be increased, making the soft magnetic sheet 31 less prone to bending and damage.

[0024] refer to Figure 4 The type of carbon fiber sheet 32 ​​is viscose-based carbon fiber sheet 32.

[0025] As a technical optimization of this utility model, by setting a carbon fiber sheet 32 ​​of the type of viscose-based carbon fiber sheet 32, the anti-metal interference performance of the carbon fiber sheet 32 ​​can be increased, which makes it more convenient for users to use.

[0026] refer to Figure 4 The silica aerogel 33 is a hydrophobic silica aerogel 33.

[0027] As a technical optimization of this utility model, by setting a silica aerogel 33 of the type of hydrophobic silica aerogel 33, the waterproof performance of the silica aerogel 33 can be increased, preventing water from penetrating the silica aerogel 33 and coming into contact with the RFID chip 4.

[0028] refer to Figure 1 A label 7 is fixedly connected to the top of the upper foam 5.

[0029] As a technical optimization of this utility model, by setting the label paper 7, product data can be manually written or printed, which facilitates the marking of product data by users.

[0030] The working principle and usage process of this utility model are as follows: When in use, after the lower foam 1 is attached to the metal surface through the adhesive layer 2, the lower foam 1 first blocks the metal to prevent the eddy current effect inside the metal from absorbing the electromagnetic energy of the RFID chip 4. Then, the soft magnetic sheet 31 absorbs the radio frequency signal reflected by the metal, preventing the radio frequency signal from being conducted to the carbon fiber sheet 32. When the radio frequency signal is conducted to the carbon fiber sheet 32, the carbon fiber sheet 32 ​​absorbs the radio frequency signal reflected by the metal, preventing the radio frequency signal from being conducted to the silica aerogel 33. When the radio frequency signal is conducted to the silica aerogel 33, the silica aerogel 33 finally absorbs the radio frequency signal reflected by the metal. At this time, the radio frequency signal reflected by the metal can be absorbed, so that the energy emitted by the reader can effectively reach the RFID chip 4, thereby achieving a good anti-metal interference effect.

[0031] In summary, this sandwich-type RFID foam tag, by setting up a lower foam 1, an adhesive layer 2, an anti-metal interference layer 3, a soft magnetic sheet 31, a carbon fiber sheet 32, a silica aerogel 33, an RFID chip 4, an upper foam 5, and an adhesive layer 2 6, solves the problems of traditional RFID tags having poor anti-metal interference capabilities, strong reflection of radio frequency signals from metal surfaces leading to signal energy attenuation or path confusion, and the absorption of some electromagnetic energy by the eddy current effect inside the metal, significantly weakening the energy received by the tag, thus causing the RFID tag to be completely unable to respond to read and write commands.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sandwich-type RFID foam tag, comprising a lower foam (1), characterized in that: The bottom of the lower foam (1) is fixedly connected to an adhesive layer (2), the top of the lower foam (1) is fixedly connected to an anti-metal interference layer (3), the top of the anti-metal interference layer (3) is fixedly connected to an RFID chip (4), the top of the RFID chip (4) is provided with an upper foam (5), and the bottom of the upper foam (5) is fixedly connected to an adhesive layer (6) that works in conjunction with the lower foam (1). The anti-metal interference layer (3) includes a soft magnetic sheet (31) fixedly connected to the top of the lower foam (1), a carbon fiber sheet (32) fixedly connected to the top of the soft magnetic sheet (31), and a silica aerogel (33) fixedly connected to the top of the carbon fiber sheet (32).

2. The sandwich-type RFID foam tag according to claim 1, characterized in that: The soft magnetic sheet (31) is an amorphous soft magnetic alloy sheet.

3. The sandwich-type RFID foam tag according to claim 1, characterized in that: The carbon fiber sheet (32) is a viscose-based carbon fiber sheet (32).

4. A sandwich-type RFID foam tag according to claim 1, characterized in that: The silica aerogel (33) is a hydrophobic silica aerogel (33).

5. A sandwich-type RFID foam tag according to claim 1, characterized in that: A label (7) is fixedly connected to the top of the upper foam (5).

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