Book RFID tag and method of making the same

Abstract

The application provides a book RFID tag and a manufacturing method thereof. The book RFID tag comprises a coreless substrate, the coreless substrate is in a strip shape, the coreless substrate comprises an insulating layer, a first hard layer above the insulating layer and a second hard layer below the insulating layer, and the insulating layer has a conductive point; an RFID chip, the RFID chip is embedded in the first hard layer; a first antenna, the first antenna is embedded in the first hard layer and connected with the RFID chip; and a second antenna, the second antenna is embedded in the second hard layer and connected with the RFID chip through the conductive point. The book RFID tag has the characteristics of narrow, thin, hard and double-antenna structure, can meet the use requirement of being pasted in the blank position close to the spine in the book in the automatic book collecting and editing work, and is helpful to realize efficient book collecting and editing work.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of RFID tags, in particular to a book RFID tag and a manufacturing method thereof. BACKGROUND

[0002] The number of books in a library is huge, in order to facilitate the taking and placing of books and the management of borrowing and returning, a label containing the book name, call number, library number, shelf number, etc. is generally pasted on the book during book acquisition and editing.

[0003] In order to save manpower and improve the efficiency of book acquisition, the related technology has developed an automatic book acquisition device. For example, the prior application of Chinese patent CN114524218B discloses an automatic book acquisition device which can paste labels on the spine, the back cover, the inside front page and the blank space near the spine according to the relevant requirements of the user. Among them, the RFID label is pasted on the blank space near the spine.

[0004] Currently, in order to improve the speed and accuracy of RFID tag identification during book acquisition and subsequent book entry and exit, dual-antenna RFID is gradually popularized in book acquisition management, and some users of acquisition equipment directly stipulate in the equipment procurement contract that dual-antenna RFID labels should be applied.

[0005] The application object, pasting position and performance requirements of the above-mentioned RFID label determine that the RFID label must meet the following characteristics: 1. It must be as narrow as possible to completely fit in the blank space near the spine without blocking the content inside the book; 2. It must be thin enough so as not to significantly affect the overall thickness of the book, or in other words, it will not cause the book to be significantly deformed by the support of the RFID label; 3. It must have a certain rigidity, otherwise in the case of very narrow size and poor hardness, the overall mechanical strength is poor, which leads to the internal antenna being easily broken during the automatic labeling operation and subsequent book use; 4. It must contain two antenna structures.

[0006] However, the above-mentioned characteristics are contradictory and difficult to meet simultaneously in the current design and manufacture of RFID labels, for example, a label containing two antenna structures is either thick because the antennas are located in different layers or wide because the antennas are located in the same layer; rigid labels are either made of hard substrate containing core plates or packaged with plastic shells, thus having a large thickness. Therefore, it is urgent to propose a narrow, thin and rigid dual-antenna RFID label. SUMMARY

[0007] The present application provides a book RFID tag and a manufacturing method thereof, which has the characteristics of narrow, thin, hard and double-antenna structure, can meet the use requirement of being pasted in the blank near the spine in the book in the automatic book collecting and editing work, and is helpful to realize efficient book collecting and editing work.

[0008] The technical scheme adopted by the present application is as follows:

[0009] The book RFID tag comprises a coreless substrate, an RFID chip, a first antenna and a second antenna.

[0010] The book RFID tag further comprises a glue layer and a release paper layer.

[0011] The length-width ratio of the coreless substrate is greater than or equal to 10.

[0012] The insulating layer is a cyanate ester resin layer or a polytetrafluoroethylene layer.

[0013] The conductive point is a metalized hole opened on the insulating layer or a metal block embedded in the insulating layer.

[0014] The first hard layer and the second hard layer are both composite polymer layers, which are casted from a mixture of polyethylene, alkyd resin, epoxy resin and glass fiber, and the mass ratio of the polyethylene, the alkyd resin, the epoxy resin and the glass fiber in the mixture is 10-20%, 35-45%, 20-30% and 15-25% respectively.

[0015] The RFID chip is buried in the middle position of the length direction of the first hard layer, the conductive point is located in the middle position of the length direction of the insulating layer, the first antenna comprises two symmetrical radiators on both sides of the middle position of the length direction of the first hard layer, and the second antenna comprises two symmetrical radiators on both sides of the middle position of the length direction of the second hard layer.

[0016] A kind of book RFID label manufacturing method, comprising the following steps: by cutting the insulating plate material to obtain the insulating layer;Perforation is made on the insulating layer, and the conductive point is made through the insulating layer at the position of perforation;The first antenna is printed on one side of the insulating layer by conductive slurry, and the RFID chip is placed on one side of the insulating layer, wherein the first pin of the RFID chip is connected with the first antenna, and the second pin of the RFID chip is connected with the conductive point;The first hard layer is cast on one side of the insulating layer, and the RFID chip and the first antenna are buried in the first hard layer during casting;The second antenna is printed on the other side of the insulating layer by conductive slurry, wherein the second antenna is connected with the conductive point;The second hard layer is cast on the other side of the insulating layer, and the second antenna is buried in the second hard layer during casting.

[0017] The second pin of the RFID chip is bonded with the conductive point by conductive glue, and the first pin of the RFID chip is bonded with the first antenna by conductive glue.

[0018] The first hard layer and the second hard layer are both casted by the mixture of polyethylene, alkyd resin, epoxy resin and glass fiber, and the mass fraction of the polyethylene, the alkyd resin, the epoxy resin and the glass fiber in the mixture is 10-20%, 35-45%, 20-30% and 15-25% respectively.

[0019] The beneficial effects of the present application are as follows:

[0020] The present application adopts coreless substrate, and the thickness of the coreless substrate is less than 1 / 3 of the substrate containing core plate, so that the overall label is thin;The double antenna is layered, and does not occupy horizontal space, so that the label can maintain a narrow size;The two sides of the coreless substrate are formed into hard layers, so that the label has a certain rigidity, and has a certain mechanical strength even in the case of narrow size. Therefore, the book RFID label has the characteristics of narrow, thin, hard and double antenna structure, can meet the use demand of being pasted in the blank near the spine of the book in the automatic book collecting and editing work, and helps to realize efficient book collecting and editing work. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the cross-sectional structure schematic view of the book RFID label of one embodiment of the present application;

[0022] Figure 2 It is the structure schematic view of RFID chip and first antenna exposed when the first hard layer of one embodiment of the present application is removed;

[0023] Figure 3 The figure is a flow chart of a method for making a book RFID tag according to an embodiment of the present invention. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] like Figure 1 and Figure 2 As shown, the book RFID tag of an embodiment of the present invention includes a coreless substrate 10, an RFID chip 20, a first antenna 30 and a second antenna 40. The coreless substrate 10 is in a long strip shape. The coreless substrate 10 includes an insulating layer 11, a first hard layer 12 located above the insulating layer 11 and a second hard layer 13 located below the insulating layer 11. The insulating layer 11 has a conductive point 14; the RFID chip 20 is buried in the first hard layer 12; the first antenna 30 is buried in the first hard layer 12 and is connected to the RFID chip 20; the second antenna 40 is buried in the second hard layer 13 and is connected to the RFID chip 20 through the conductive point 14.

[0026] In one embodiment of the present invention, the ratio of the length to the width of the coreless substrate 10 is greater than or equal to 10. In a specific embodiment of the present invention, the length of the coreless substrate 10 is 80 to 150 mm, and the width is 2 to 8 mm. The dimensions of the coreless substrate 10 are the same as those of a book RFID tag, which is suitable for attachment to a blank space near the spine of a page within a book without obscuring the content of the page.

[0027] In one embodiment of the present invention, the insulating layer 11 is a cyanate resin layer or a polytetrafluoroethylene layer. Of course, other insulating materials suitable for forming a coreless substrate may also be used.

[0028] In one embodiment of the present invention, the conductive point 14 is a metalized hole opened on the insulating layer 11, or a metal block embedded in the insulating layer 11. There can be one or more conductive points 14, and the number corresponds to the number of pins of the RFID chip 20 connected to the second antenna 40 ( Figure 1 (Take 2 as an example).

[0029] In one embodiment of the present application, the first hard layer 12 and the second hard layer 13 are both composite polymer layers, which can be casted from a mixture of polyethylene, alkyd resin, epoxy resin and glass fiber. In the mixture, the mass ratio of polyethylene, alkyd resin, epoxy resin and glass fiber is 10-20%, 35-45%, 20-30% and 15-25% respectively. In a preferred embodiment of the present application, the mass ratio of polyethylene, alkyd resin, epoxy resin and glass fiber is 15%, 40%, 25% and 20% respectively. The first hard layer 12 and the second hard layer 13 casted from the above mixture have a rigidity of more than 6 kN / mm when the thickness is greater than 0.2 mm.

[0030] In one embodiment of the present application, referring to Figure 1 and Figure 2 , the RFID chip 20 can be embedded at the middle position of the first hard layer 12 in the length direction, the conductive point 14 is located at the middle position of the insulating layer 11 in the length direction, the first antenna 30 can include two radiators which are symmetrically located at both sides of the middle position of the first hard layer 12 in the length direction, and similarly, the second antenna 40 can include two radiators which are symmetrically located at both sides of the middle position of the second hard layer 13 in the length direction.

[0031] The book RFID tag according to the embodiment of the present application has the following advantages. The book RFID tag has a coreless substrate, so the thickness of the coreless substrate is less than 1 / 3 of the thickness of a substrate with a core, and thus the overall thickness of the tag is relatively small. The tag has a double-antenna structure, so the tag does not occupy horizontal space and thus can maintain a relatively small size. The two surfaces of the coreless substrate are formed into hard layers, so the tag has a certain rigidity and mechanical strength even when the size of the tag is relatively small. Therefore, the book RFID tag has the advantages of narrowness, thinness, rigidity and a double-antenna structure, and can meet the requirements of being attached to the blank space near the spine of a book in the automated book collecting and editing process, thereby facilitating efficient book collecting and editing.

[0032] Further, the book RFID tag according to the embodiment of the present application can further include a glue layer and a release paper layer. The glue layer is located on the first hard layer 12 or under the second hard layer 13, and the release paper layer covers the glue layer. The glue layer is made of adhesive, and the area of the glue layer is equal to the area of the coreless substrate. The area of the release paper layer can be greater than the area of the glue layer, which facilitates the release of the release paper layer in the automated operation.

[0033] To obtain the book RFID tag according to the above embodiment, the present application further provides a method for manufacturing a book RFID tag.

[0034] As shown in Figure 3 , the method for manufacturing a book RFID tag according to the embodiment of the present application includes the following steps:

[0035] S1, cutting the insulation board to obtain an insulation layer.

[0036] In one embodiment of the present application, the insulation board is a cyanate ester resin board or a polytetrafluoroethylene board, and the cut insulation layer is a cyanate ester resin layer or a polytetrafluoroethylene layer.

[0037] S2, punching holes on the insulation layer and making conductive points through the insulation layer at the punching positions.

[0038] The conductive points can be metallized holes or metal blocks.

[0039] S3, printing a first antenna on one side of the insulation layer by conductive paste and placing an RFID chip on one side of the insulation layer, wherein the first pin of the RFID chip is connected to the first antenna and the second pin of the RFID chip is connected to the conductive point.

[0040] The conductive paste can be conductive copper paste, conductive aluminum paste or conductive silver paste, etc. The first pin of the RFID chip refers to the pin that should be connected to the first antenna, and the second pin of the RFID chip refers to the pin that should be connected to the second antenna. When placing the RFID chip on one side of the insulation layer, the second pin of the RFID chip can be bonded to the conductive point by conductive glue, and the first pin of the RFID chip can be bonded to the first antenna by conductive glue.

[0041] S4, casting a first hard layer on one side of the insulation layer, and embedding the RFID chip and the first antenna in the first hard layer during the casting process.

[0042] S5, printing a second antenna on the other side of the insulation layer by conductive paste, wherein the second antenna is connected to the conductive point.

[0043] When printing the second antenna, the second antenna is connected to the conductive point.

[0044] S6, casting a second hard layer on the other side of the insulation layer, and embedding the second antenna in the second hard layer during the casting process.

[0045] In one embodiment of the present application, the first hard layer and the second hard layer are both cast from a mixture of polyethylene, alkyd resin, epoxy resin and glass fiber. In the mixture, the mass ratio of polyethylene, alkyd resin, epoxy resin and glass fiber is 10-20%, 35-45%, 20-30% and 15-25% respectively. In a preferred embodiment of the present application, the mass ratio of polyethylene, alkyd resin, epoxy resin and glass fiber is 15%, 40%, 25% and 20% respectively. The first hard layer 12 and the second hard layer 13 cast from the above mixture have a rigidity of more than 6kN / mm when the thickness is greater than 0.2mm.

[0046] After step S6, the adhesive layer and the release paper layer can also be made, thereby completing the making of the book RFID tag.

[0047] The making method of the book RFID tag according to the embodiment of the present application does not use a substrate containing a core plate, so that the tag is relatively thin as a whole; the layered arrangement of the two antennas does not occupy horizontal space, so that the tag can maintain a relatively narrow size; the two surfaces are formed into hard layers, so that the tag has a certain rigidity, and even in the case of a relatively narrow size, the tag can have a certain mechanical strength. Thus, the book RFID tag made according to the present application has the characteristics of narrowness, thinness, hardness and double-antenna structure, and can meet the use requirement of being pasted in the blank space near the spine of a book in the automated book collecting and editing work, and is helpful to realize efficient book collecting and editing work.

[0048] In the description of the present application, the terms "first", "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. The meaning of "plurality" is two or more, unless otherwise specifically limited.

[0049] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, or detachable connection, or integrated; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] In the present application, unless otherwise specifically defined and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0051] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples, without contradiction.

[0052] Any process or method descriptions or descriptions of the flow diagrams in the flow charts described herein, or otherwise described in the specification, can be understood as representing the steps of any one or more of the methods or processes described herein, and the scope of the preferred embodiments of the present application includes additional implementation in which the steps are performed in a different order, including an order that is substantially simultaneous, or in reverse order, depending upon the functionality involved. The descriptions of the flow diagrams and / or steps described herein, or otherwise described in the specification, can be understood as representing any one or more of the steps of any one or more of the methods or processes described herein, and the scope of the preferred embodiments of the present application includes additional implementation in which the steps are performed in a different order, including an order that is substantially simultaneous, or in reverse order, depending upon the functionality involved.

[0053] The logic and / or steps represented in the flow charts described herein, or otherwise described in the specification, for example, can be considered as a list of executable instructions for implementing the logic function, and can be specifically embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus or device, such as a computer-based system, a system including a processor, or other system that can fetch the instructions from the instruction execution system, apparatus or device and execute the instructions. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate or transport a program for use by or in connection with an instruction execution system, apparatus or device, or in conjunction with these instruction execution systems, apparatus or devices. More specific examples (non-exhaustive list) of computer-readable media include the following: electrical connections having one or more wires (electronic devices), portable computer disks (magnetic devices), random access memories (RAM), read-only memories (ROM), erasable programmable read-only memories (EPROM or flash memories), fiber optic devices, and portable compact disc read-only memories (CDROMs). In addition, a computer-readable medium can even be paper or other suitable medium on which the program can be printed, as the program can be electronically obtained, for example, by optical scanning of the paper or other medium, followed by electronic conversion into a useable form, and then stored in computer memory.

[0054] It should be understood that parts of the present application can be implemented in hardware, software, firmware or a combination thereof. In the above embodiments, a plurality of steps or methods can be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, and as in another embodiment, it can be implemented using any or a combination of the following technologies, which are known in the art: discrete logic circuitry having logic gates for implementing logic functions on data signals, application specific integrated circuits having appropriate combinational logic gates, programmable gate arrays (PGA), field programmable gate arrays (FPGA), etc.

[0055] Those skilled in the art can understand that all or part of the steps carried out by the above-mentioned embodiment methods can be completed by programs instructing relevant hardware, and the programs can be stored in a computer readable storage medium, and when the programs are executed, one or a combination of the steps of the method embodiments is included.

[0056] In addition, each functional unit in each embodiment of the present application can be integrated into one processing module, or each unit can exist physically, or two or more units can be integrated into one module. The above integrated module can be realized in the form of hardware or in the form of a software functional module. The integrated module, if realized in the form of a software functional module and sold or used as an independent product, can also be stored in a computer readable storage medium.

[0057] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A book RFID tag, characterized by, The application relates to a coreless substrate, which is in a strip shape and comprises an insulating layer, a first hard layer above the insulating layer and a second hard layer below the insulating layer, the insulating layer having a conductive point; an RFID chip embedded in the first hard layer; a first antenna embedded in the first hard layer and connected with the RFID chip; a second antenna embedded in the second hard layer and connected with the RFID chip through the conductive point; wherein the first hard layer and the second hard layer are both composite polymer layers, which are casted from a mixture of polyethylene, alkyd resin, epoxy resin and glass fiber, and the mass ratio of the polyethylene, the alkyd resin, the epoxy resin and the glass fiber in the mixture is 10-20%, 35-45%, 20-30% and 15-25% respectively. The application further relates to a glue layer above the first hard layer or below the second hard layer; and a release paper layer covering the glue layer. The length-width ratio of the coreless substrate is greater than or equal to 10. The insulating layer is a cyanate ester resin layer or a polytetrafluoroethylene layer. The conductive point is a metalized hole opened on the insulating layer or a metal block embedded in the insulating layer. The RFID chip is embedded at the middle position of the length direction of the first hard layer, the conductive point is at the middle position of the length direction of the insulating layer, the first antenna comprises two symmetrical radiators on both sides of the middle position of the length direction of the first hard layer, and the second antenna comprises two symmetrical radiators on both sides of the middle position of the length direction of the second hard layer.

2. The book RFID tag of claim 1, wherein The application further relates to the following steps: cutting the insulating plate to obtain the insulating layer; punching the insulating layer and making the conductive point penetrating through the insulating layer at the punching position; printing the first antenna on one side of the insulating layer through conductive paste and placing the RFID chip on one side of the insulating layer, wherein the first pin of the RFID chip is connected with the first antenna and the second pin of the RFID chip is connected with the conductive point; casting the first hard layer on one side of the insulating layer and embedding the RFID chip and the first antenna in the first hard layer during the casting process; printing the second antenna on the other side of the insulating layer through conductive paste, wherein the second antenna is connected with the conductive point; casting the second hard layer on the other side of the insulating layer and embedding the second antenna in the second hard layer during the casting process. The second pin of the RFID chip is bonded with the conductive point through conductive glue, and the first pin of the RFID chip is bonded with the first antenna through conductive glue. ​ 3. The book RFID tag of claim 1, wherein ​ 4. The book RFID tag of claim 1, wherein ​ 5. The book RFID tag of claim 4, wherein, ​ 6. The book RFID tag of claim 1, wherein ​ 7. A method of manufacturing a book RFID tag according to any one of claims 1 to 6, characterized by, ​ ​ ​ ​ ​ ​ ​ 8. The method of claim 7, wherein the step of applying the adhesive is performed by a roll coater. ​

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