WO2022193392A1

WO2022193392A1 - Radiofrequency identification tag and manufacturing method therefor

Info

Publication number: WO2022193392A1
Application number: PCT/CN2021/087182
Authority: WO
Inventors: 焦林
Original assignee: 深圳市骄冠科技实业有限公司
Priority date: 2021-03-16
Filing date: 2021-04-14
Publication date: 2022-09-22
Also published as: CN112836782A

Abstract

The present application relates to the field of corrugated antenna tags and specifically relates to a radiofrequency identification tag and a manufacturing method therefor, comprising the following steps: mounting a corrugated antenna, which is affixed to a tag surface layer on the side coated with an adhesive layer; mounting a miniature radiofrequency sensor, which is affixed to a specified position on the tag surface layer, the miniature radiofrequency sensor and the corrugated antenna being provided on a same side of the tag surface layer; the specified position being in a trough at a midsection position of the corrugate antenna; the corrugated antenna and the miniature radiofrequency sensor being separated from each other; and compounding a tag, the tag surface layer to which the corrugated antenna and the miniature radiofrequency sensor are affixed is laminated with a tag bottom layer so that the corrugated antenna and the miniature radiofrequency sensor are arranged between the tag surface layer and the tag bottom layer, thus producing a radiofrequency tag. The radiofrequency tag of the present application has a simple structure, an environmentally-friendly method, an extended service life, and inexpensive costs and is favorable for the promotion of RFID tag radiofrequency technology.

Description

A radio frequency tag and its manufacturing method

technical field

The present application relates to the field of wave-shaped antenna tags, and in particular, to a radio frequency tag and a manufacturing method thereof.

Background technique

At present, the application scope of RFID tags and radio frequency technology is more and more extensive. RFID tags with different structures are derived from different usage scenarios. Each RFID tag has its own strengths and advantages, as well as different defects.

In the related art, the PET aluminum foil film chemically etched wavy antenna and the chip are fixed together with the inlay method of the radio frequency tag, which is the mainstream RFID tag used in radio frequency technology. The corrugated antennas are bonded together, which easily leads to the peeling of the chemically etched aluminum foil corrugated antennas during bending, so the bending resistance is poor and cannot be used to make "laundry labels" and car tire labels.

The radio frequency RFID tags of the above-mentioned related art have poor bending resistance.

SUMMARY OF THE INVENTION

In order to improve the bending resistance of a radio frequency RFID tag, the present application provides a radio frequency tag and a manufacturing method thereof.

In the first aspect, a radio frequency tag provided by the application and a manufacturing method thereof adopt the following technical solutions:

A manufacturing method of a radio frequency tag, comprising the following steps:

Install the wave antenna, and paste the wave antenna to the label surface on the side coated with the adhesive layer;

Install the micro RF sensor, paste the micro RF sensor to the designated position of the label surface layer, the micro RF sensor and the wave antenna are arranged on the same side of the label surface layer; the designated position is the wave antenna in the middle position. the wave valley; the distance between the wave antenna and the miniature radio frequency sensor;

The label is compounded, and the label surface layer pasted with the wave antenna and the micro RF sensor is pressed with the label bottom layer so that the wave antenna and the micro RF sensor are located between the label surface layer and the label bottom layer to obtain a radio frequency label.

By adopting the above technical solution, the wavy antenna is obtained by squeezing the metal wire into a continuous wavy shape, and the wavy antenna has the function of converting electromagnetic waves and high-frequency electric energy, and can play the role of receiving or sending signals; The surface layer and the bottom layer of the label are glued to make the surface layer of the label and the bottom layer of the label sticky, which facilitates the fixing of the wave antenna, the miniature radio frequency sensor or the mutual bonding and fixing; Cut and press down on the label bottom layer, and control the micro RF sensor to correspond to the designated position, so that the wave antenna and the micro RF sensor are fixed between the label bottom layer and the label surface layer, so that the wave antenna and the micro RF sensor are not easy. Exposed, thus reducing the peeling between the wave-shaped antenna and the micro RF sensor and the bottom layer of the label and the surface layer of the label; the bottom layer of the label and the surface layer of the label are bonded to each other by adhesive, so the bonding is relatively firm, and it is not easy to separate from each other; Therefore, when the formed radio frequency tag is bent, it is not easy to separate the wave antenna, the micro radio frequency sensor from the label surface layer and the bottom layer of the label, and the bending resistance of the radio frequency tag is improved; The cost of the surface layer and the bottom layer of the label is low, and the manufacturing method is simple, so the cost of the radio frequency tag is low, which is convenient for mass production; the radio frequency tag prepared by the above method has good bending resistance and stability, and has a long service life; The thickness of the label is small, which is convenient for printing and fixing; to sum up, the radio frequency label of the present application is helpful for the promotion of the radio frequency technology of the RFID label in the market.

Optionally, the wave-shaped antenna is located above the label surface layer, so that the wave-shaped antenna falls onto the glue layer of the label surface layer after being cut.

By adopting the above technical solution, the wave antenna is directly contacted with the adhesive layer of the label surface layer after shearing by the action of gravity, so that the wave antenna and the label surface layer are fixed, the fixing is simple and easy, and the manufacturing process more environmentally friendly.

Optionally, before the micro radio frequency sensor is attached, the micro radio frequency sensor is adhered to the release tape.

By adopting the above technical solution, before the micro RF sensor and the label surface are fixed, they are pasted on the release tape. Since the adhesive between the release tape and the micro RF sensor is relatively slight, the micro RF sensor and the release tape are easier to separate. , and it is convenient to realize the continuous pressing of the micro radio frequency sensor and the sticking of the label surface layer, so that the process of fixing the micro radio frequency sensor and the label surface layer has a high efficiency.

Optionally, the miniature radio frequency sensor is positioned with the wave antenna through a photoelectric identification system, so that the position of the miniature radio frequency sensor corresponds to the wave antenna.

By adopting the above technical solutions, the photoelectric identification system obtains the real-time position information of the wave-shaped antenna by identifying the wave-shaped antenna, and obtains the reference position information of the micro-RF sensor by identifying the micro-RF sensor, and then compares the real-time position information of the wave-shaped antenna with the micro-RF sensor. The reference position information of the RF sensor is compared until the real-time position information is adjusted to correspond to the reference position information, so as to achieve a more accurate alignment between the micro RF sensor and the wave-shaped antenna, thereby helping the micro RF sensor to accurately land on the designated position. .

Optionally, the wire running speed of the metal wire is consistent with the paper running speed of the label surface layer, so that the wave-shaped antenna is stably adhered to the adhesive layer of the label surface layer.

By adopting the above technical solution, the wire routing is consistent with the speed of the label surface layer, so the interval between the two adjacent wave-shaped antennas on the label surface layer is equal, so that the position between the wave-shaped antenna and the label surface layer is equal. matching accuracy.

Optionally, the running time of the label surface layer is the same as the running stop time of the metal wire, and within the stopping time, the metal wire is cut.

By adopting the above technical solution, the metal wire is cut within the stopping time, so the incision at the end section of the metal wire is neat, and each section of the wavy antenna formed by the extrusion of the metal wire is more regular, thus making the performance of each radio frequency tag better. Stablize.

Optionally, the paper running of the label surface layer and the wire running of the metal wire have the same stop time, and within the stop time, the micro radio frequency sensor is pressed to a designated position.

By adopting the above technical solution, the micro radio frequency sensor is pressed down on the label surface layer during the stop time. Since the label surface layer and the micro radio frequency sensor are relatively stationary, the position of the micro radio frequency sensor is more accurate.

In the second aspect, a radio frequency tag provided by the application and a manufacturing method thereof adopt the following technical solutions:

A radio frequency label, applied to the above-mentioned manufacturing method of a radio frequency label, comprising a label bottom layer and a label surface layer, a wave antenna and a miniature radio frequency sensor are arranged between the label bottom layer and the label surface layer, and the label The bottom layer and the label surface layer are adhered to each other by adhesive glue.

By using the above technical solution, the bottom layer of the label and the surface layer of the label are bonded together by adhesive, and the wave antenna and the micro radio frequency sensor are covered between the bottom layer and the surface layer of the label, so the wave antenna and the micro radio frequency sensor are covered. The sensor is not easy to be exposed, which reduces the wave antenna, the micro RF sensor and the label surface layer or the label bottom layer when the RF label is bent or deformed by external force.

Optionally, the label bottom layer or the label surface layer is a paper sheet and/or a film, and the adhesive is a pressure-sensitive adhesive.

By adopting the above technical solution, the cost of the paper sheet and the film is low, and the pressure-sensitive adhesive has strong viscosity, which can be used to make a tag label. When the paper sheet or film is bent, the pressure-sensitive adhesive can also be used. Keep a good fit with the paper or film. In this way, the durability of the radio frequency tag is strong.

Optionally, the label bottom layer and the label surface layer are non-woven fabrics, and the adhesive is PUR type hot melt adhesive.

By adopting the above technical solutions, the non-woven fabric has strong bending resistance and can be used to make laundry tags. The internal wave antenna and micro RF sensor can maintain a good RF coupling function during the laundry process, which improves the radio frequency tag. internal structural stability.

Optionally, the label bottom layer and the label surface layer are rubber sheets, and the adhesive glue is rubber-type glue.

By adopting the above technical solution, the rubber sheet has good ductility. When the radio frequency tag is stretched by external force, the wave antenna and the rubber skin are stretched together, so the structure of the wave antenna and the micro radio frequency sensor is not easily damaged, thus ensuring the radio frequency function. of normal operation.

Optionally, the wave-shaped antenna is made of metal wire, and the metal wire is any one of copper wire, aluminum wire or stainless steel wire.

By adopting the above technical solution, since the cost of copper wire or aluminum wire in the metal wire is low, the cost of the wave antenna is greatly saved, which is helpful for the promotion of radio frequency tags.

Optionally, the diameter of the metal wire ranges from 0.05 to 0.08 mm.

By adopting the above technical solution, since the diameter of the metal wire is up to 0.08mm and its thickness is relatively thin, the thickness of the radio frequency tag of the present application is made thinner, the appearance of the radio frequency tag is smoother, and it is convenient to print text and digital patterns on the surface of the tag. .

Optionally, the expanded length of the wave-shaped antenna is 0.4m.

By adopting the above technical solution, the 0.4m long wave antenna can receive high frequency signals above 3MHz, making the wave antenna more compatible with the miniature radio frequency sensor.

Optionally, the diameter of the miniature radio frequency sensor is not greater than 6 mm, and the thickness is not greater than 0.2 mm.

By adopting the above technical solutions, the micro-RF sensor has a smaller thickness and occupies less space, thus reducing the area where the micro-RF sensor interacts with external forces, and the micro-RF sensor is not easily squeezed by external forces to cause bending deformation.

Optionally, the positional offset between the wave-shaped antenna and the miniature radio frequency sensor is not greater than 0.3 mm.

By adopting the above technical solution, when the positional offset between the wave antenna and the miniature radio frequency sensor is less than 0.3mm, the radio frequency performance is kept in a relatively good state, which increases the fault tolerance rate of the radio frequency tag.

To sum up, the present application includes at least one of the following beneficial technical effects:

The method of making the wave-shaped antenna is simple, and the manufacturing process does not produce waste water and waste gas, and is environmentally friendly;

The copper wire RF wave antenna and the miniature RF sensor are not connected by conductive glue. It is very easy to separate the miniature RF sensor from the RF tag, so as to achieve the purpose of recycling the miniature RF sensor for multiple use.

Description of drawings

FIG. 1 is a method flowchart of a method for manufacturing a radio frequency tag according to an embodiment of the present application.

FIG. 2 is a schematic diagram of a method flow principle according to an embodiment of the present application.

FIG. 3 is a top view of a wavy antenna formed by extruding a metal wire through a double pressing wheel to form a wavy shape according to an embodiment of the present application.

FIG. 4 is a schematic diagram of a micro radio frequency sensor adhered to a release tape according to an embodiment of the present application.

FIG. 5 is a schematic diagram of attaching a micro radio frequency sensor to a label surface layer according to an embodiment of the present application.

FIG. 6 is a schematic structural diagram of the separation of the label surface layer and the label bottom layer of a radio frequency label according to an embodiment of the present application.

FIG. 7 is a cross-sectional view of a radio frequency tag according to an embodiment of the present application.

FIG. 8 is a schematic structural diagram of a micro radio frequency tag according to an embodiment of the present application.

Description of reference numerals: 1. Bottom layer of label; 2. Surface layer of label; 3. Adhesive layer; 4. Wave antenna; 5. Miniature radio frequency sensor; 51, Bottom plate; 52, Chip; Outer loop antenna; 55. Conductive wire;

11. Coating head; 12. Metal wire; 121. Lead-in wheel; 122. Double pressure roller; Push rod; 14. Lamination wheel; 15. Cutting assembly; 16. Finished roll of radio frequency tag.

Detailed ways

In the related art, there are several ways to make radio frequency tags:

A conventional tag label includes a wave-shaped antenna 4 and a chip 52, wherein the wave-shaped antenna 4 is made by chemical etching of PET aluminum foil film, and the wave-shaped antenna 4 and the chip 52 are fixed together by a PVC sheet with conductive glue to form a mosaic. Radio frequency tags are the mainstream RFID tags for radio frequency technology applications. However, since the chip 52 is bonded to the chemically etched aluminum foil wave antenna 4 with conductive glue, the bending resistance of PVC is different from the bending resistance of the wave antenna 4, so chemical etching is easily caused during bending. The aluminum foil wavy antenna 4 is peeled off from the conductive adhesive and PVC sheet, so the hang tag label has poor bending resistance and is difficult to be used to make laundry labels and car tire labels.

At the same time, the production of the wave antenna 4 by chemical etching of the PET aluminum foil will generate a large amount of waste water and pollute the environment; it will also lead to high production costs of the RFID tag, which affects the expansion of the application range of the RFID tag.

The laundry tag in the related art is made of a multi-strand carbon fiber to make a wave-shaped antenna 4, which is coupled and connected to the radio frequency resonant cavity of the PCB double-layer structure to become an RFID tag. The carbon fiber wave antenna 4 is resistant to bending, and the label bending process does not affect the RF coupling function of the carbon fiber wave antenna 4 and the RF resonant cavity of the PCB board. Therefore, in dynamic scenarios such as laundry processes, even if the RFID tag occurs It is not easy to affect the structural stability of the label even if it is bent. However, the material cost and manufacturing cost of the carbon fiber wavy antenna 4 in such laundry tags are very high, and this alone far exceeds the price of the PET aluminum foil wavy antenna 4 RFID tag, resulting in a PCB double-layer RF The manufacturing cost of the resonant cavity assembly is high, which exceeds the price of ordinary RFID tags. The price of laundry tags is more than 6 times that of the above-mentioned hang tag tags, which affects the application and promotion of laundry tags.

In addition, the thickness of the PCB double-layer RF resonant cavity assembly of the laundry label reaches 2mm, resulting in the thickest part of the laundry label reaching 3mm, which not only makes the appearance of the laundry label uneven, but also makes it difficult to print text and numbers on the surface of the laundry label.

The tire label in the related art is installed inside the tire. The tire label uses rubber skin as the bottom layer 1 of the label. One side of the rubber layer is fixed with a corrugated wave antenna 4, and the wave antenna 4 and the RFID chip 52 are welded on a small PCB. On the board, when the external force pulls the label to stretch, the corrugated wave antenna 4 and the bottom layer 1 of the rubber skin are stretched together, and the stability of the wave antenna 4 and the chip 52 welded on the PCB board is not affected, which ensures the external force of the tire label. When stretched, its radio frequency performance is not affected. However, the manufacturing process is complicated, and the IC legs of the packaged chip 52 need to be welded together with two bent copper wires, which leads to an increase in cost; the sales price of tire tags is too high, which restricts the promotion and application of RFID tire tags; In addition, since the PCB board is thick, in order to protect the PCB board and the chip 52, the tire label is embedded inside the tire, which leads to troublesome installation and sticking of the tire label.

The radio frequency tag of the wave antenna 4 printed with conductive ink in the related art basically does not generate waste liquid or waste water in the manufacturing process, the manufacturing process is more environmentally friendly, and it is convenient to manufacture various personalized radio frequency wave antenna 4 . However, since the cost of conductive ink is still higher than the above-mentioned hang tag label, it has not been widely promoted and applied.

Therefore, in order to improve the above problems, the present application provides a manufacturing method of a radio frequency tag and a radio frequency tag.

The present application will be further described in detail below in conjunction with accompanying drawings 1-7.

The embodiment of the present application discloses a method for manufacturing a radio frequency tag.

Referring to Fig. 1 and Fig. 2, a manufacturing method of a radio frequency label includes unwinding the label surface layer 2, first unwinding the rolled label surface layer 2, and applying adhesive to the unrolled label surface layer 2. The coating head 11 with glue brushes the adhesive glue on the label surface layer 2 , and the adhesive glue forms a glue layer 3 on the label surface layer 2 , and the glue layer 3 makes one side of the label surface layer 2 sticky.

Referring to FIG. 2, the wave antenna 4 is formed, and the wire 12 is coiled and pulled, and the wire 12 enters the meshing portion of the double pressure wheel 122 through the introduction wheel 121. The modulus of the double pressure wheel 122 can be 4, 3 or 2, The number of teeth of the double pressing wheel 122 is about 18, and the metal wire 12 is squeezed into a wave-shaped wave antenna 4 when it passes through the double pressing wheel 122 .

Referring to FIG. 2 , further, the metal wire 12 is extruded to form a wave-shaped wave antenna 4 . Specifically, the metal wire 12 can be a copper wire or an aluminum wire, and of course can also be other metals with higher conductivity. The diameter of the metal wire 12 ranges from 0.05 to 0.08 mm. In this embodiment, the diameter of the metal wire 12 may be 0.06 mm, 0.07 mm or 0.08 mm.

Referring to FIG. 2 and FIG. 3 , the wave antenna 4 is installed. After the metal wire 12 is squeezed by the double pressure rollers 122, a shearing knife 123 is installed at the outlet of the double pressure rollers 122, and the label surface of the adhesive layer 3 is coated. Layer 2 passes under the shearing knife 123; after the wavy wire 12 continues to move forward along the conveying direction of the wire 12, the shearing knife 123 is pressed down, and the wire 12 is cut into a wavy wave. Antenna 4, the wave antenna 4 falls on the glue coating layer 3 of the label surface layer 2 under the action of gravity, and the wave antenna 4 and the label surface layer 2 are pasted together. Further, the length of the wave antenna 4 to be cut can be between 0.13m and 0.45m, specifically 0.4m. When the length of the wave antenna 4 is 0.4m, the wave antenna 4 has better sensitivity .

Referring to FIG. 2 , for reinforcement, an anti-sticking pressure wheel 124 is also installed on the advance pay-off line of the label surface layer 2. The anti-sticking pressure wheel 124 can be a roller made of silicone material, and the process of rolling on the adhesive layer 3 of the label surface layer 2 It is not easy to stick the adhesive glue in the middle, and the wave antenna 4 is pressed down by the anti-sticking pressure wheel 124 to squeeze each other with the label surface layer 2, so that the wave antenna 4 and the glue layer 3 of the label surface layer 2 are attached. be stronger.

The line speed of the wire 12, the rotational speed of the double pressure roller 122 and the paper feed speed of the label surface layer 2 are the same, and the line stop time of the metal wire 12, the stop time of the rotation of the double pressure roller 122 and the label surface layer 2 are the same. The stop time is the same, so that the wave antenna 4 can be stably adhered to the designated position of the adhesive layer 3 of the label surface layer 2.

Referring to FIG. 4 and FIG. 5 , the micro radio frequency sensor 5 is attached, and the micro radio frequency sensor 5 is pasted on the release tape 13 . The release tape 13 is arranged in rolls. During operation, the release tape 13 is first unrolled, and then the micro-RF sensor 5 of the release tape 13 is controlled by the control component to be pasted with the adhesive layer 3 of the label surface layer 2, and then the release tape 13 is pasted. The tape 13 is wound.

2, 5, specifically, the conveying direction of the unfolded release tape 13 is parallel to the conveying direction of the label surface layer 2, and the unfolded release tape 13 is parallel to the unfolded label surface layer 2, and the release The tape 13 is located just above the label surface layer 2 , and the micro radio frequency sensor 5 is pasted on the side of the release tape 13 facing the adhesive layer 3 of the label surface layer 2 .

The above-mentioned release belt 13 can be made of transparent PET material, and the release belt 13 of PET material has high transparency, non-toxic and tasteless, high tensile strength, good stiffness, anti-burning cracking, not easy to break, and excellent electrical and optical properties. , Oxygen resistance and moisture resistance are good, can withstand low temperature of minus 70 ℃, can withstand high temperature of 200 ℃, and has excellent characteristics of corrosion resistance and stable shrinkage. In addition, the release tape 13 can also use a PE film, an OPP film or the like so that the surface of the release tape 13 has a light and stable release tape 13 .

The diameter of the above-mentioned micro radio frequency sensor 5 may be less than 10 mm, and the thickness may be less than 0.3 mm. Specifically, in this embodiment, the diameter of the micro radio frequency sensor 5 may be 0.08 mm and 0.2 mm in thickness.

Referring to FIGS. 1 and 5 , the above-mentioned control assembly may include a sticking controller 131 and a sticking push rod 132 arranged below the sticking controller 131 , and the sticking controller 131 receives the position signal of the photoelectric recognition system to control the downward movement of the sticking push rod 132 pressure. Specifically, during the transmission process, the photoelectric identification system obtains the preset reference position information of the micro radio frequency sensor 5 and the real-time position information that the label surface layer 2 drives the wave antenna 4 to move during the transmission process. The reference position information is that during the transmission process of the label surface layer 2 , the micro RF sensor 5 should be pasted at a designated position on the label surface layer 2 , and this designated position can usually be the trough position of the wave-shaped wave antenna 4 . Specifically, the miniature radio frequency sensor 5 can be placed in the wave trough position near the middle of the wave antenna 4. At this time, the wave antenna 4 and the miniature radio frequency sensor 5 have better radio frequency sensitivity; further, the miniature radio frequency sensor 5 is located in the wave antenna 4. At the trough in the middle position, it can be the trough in the middle, or it can be the trough close to the middle position.

Further, the wave antenna 4 and the miniature radio frequency sensor 5 are spaced apart, so that the wave antenna 4 and the miniature radio frequency sensor 5 do not need to be electrically connected, but form a common radio frequency signal emission source or radio frequency signal through electromagnetic induction coupling. receive the source, thus reducing damage to the line during electrical connection.

The above-mentioned real-time position information is changed, and the photoelectric system will compare the real-time position information with the reference position information. When the real-time position information is consistent with the reference position information, it means that the micro radio frequency sensor 5 is aligned with the designated position. At this time, the micro radio frequency sensor 5 is located below the sticking push rod 132, and the designated position is also located below the micro radio frequency sensor 5. At this time, the photoelectric recognition system sends an execution signal to the sticking controller 131, and the sticking controller 131 controls the sticking push rod 132 to move down. Press, and the position where the release tape 13 is in contact with the sticking push rod 132 moves down, so that the micro radio frequency sensor 5 sticks at the designated position. When the sticking push rod 132 moves upward, the release tape 13 is tightened and moved upward, so that the release tape 13 is kept parallel to the label surface layer 2 .

Further, when the distance between the wave antenna 4 and the miniature radio frequency resonant cavity is less than 1 mm, the wave antenna 4 and the miniature radio frequency sensor 5 do not need to be electrically connected, but become a common radio frequency signal transmission source or receiver through electromagnetic induction coupling. source. During the actual operation, the positional deviation between the miniature radio frequency sensor 5 and the wave antenna 4 is not more than 0.3mm. When the mutual position change between the wave antenna 4 and the miniature radio frequency sensor 5 is less than 0.3mm, it is difficult not to affect the relationship between the wave antenna 4 and the wave antenna 4. RF performance of miniature RF sensor 5.

Referring to Figure 2, the label bottom layer 1 is unrolled, the rolled label bottom layer 1 is first unrolled, and adhesive glue is applied to the unfolded label bottom layer 1, and the adhesive glue also forms an adhesive layer 3 on the label bottom layer 1, and the adhesive layer is 3 Make one side of the label base layer 1 sticky.

Referring to FIG. 2 , the label is compounded, and the label bottom layer 1 formed with the adhesive layer 3 on one side is transferred to the label surface layer 2 on which the micro radio frequency sensor 5 is attached, and then the corrugated antenna 4 and the micro radio frequency sensor 5 are pasted by the pressing wheel 14. The label surface layer 2 of the sensor 5 and the label bottom layer 1 are pressed together to obtain a composite roll. The wave antenna 4 and the micro RF sensor 5 are both between the label surface layer 2 and the label bottom layer 1, and the wave antenna 4 and the micro RF sensor 5 have a certain distance from the edge of the label surface layer 2 and the label bottom layer 1, and the label bottom layer 1 has a certain distance. The adhesive layer 3 between the adhesive layer 3 and the label surface layer 2 can firmly stick the wave antenna 4 and the micro radio frequency sensor 5 around, and the wave antenna 4 and the micro radio frequency sensor 5 are not easily exposed.

1 and 2, cutting, using cutting components 15 such as die-cutting knives and slitting knives to die-cut and slit the composite web to obtain radio frequency tags. Specifically, in the process of die-cutting, the die-cutting knife is combined into a die-cutting plate according to the shape requirements of the RFID tag. When the shape of the incoming RFID tag is square, the die-cutting knife forms a square frame-shaped die-cutting plate; under the action of pressure , the die-cutting version will die-cut the composite roll into square RFID tags.

Referring to FIGS. 1 and 2 , during the slitting process, the practical slitting knife cuts the wide composite coil material into multiple narrow width coil materials, which can make the composite coil material cut more finely. After die-cutting and slitting by the cutting assembly 15 , the finished roll 16 of the radio frequency tag is obtained.

The implementation principle of a method for manufacturing a radio frequency tag in the embodiment of the present application is as follows: unwinding the label surface layer 2 so that the label surface layer 2 is unfolded and coated with adhesive on one side thereof, so that the label surface layer 2 is sticky; The metal wire 12 is extruded to form a wave-shaped wave-shaped antenna 4, the wave-shaped antenna 4 is cut to make the wave-shaped antenna 4 adhere to the label surface layer 2, and then the photoelectric control system is used to control the micro radio frequency sensor 5 and the label surface layer. 2 is attached to the designated position, so that the wave antenna 4 is coupled with the label surface layer 2; Since the wave antenna 4 and the micro radio frequency sensor 5 are both arranged between the label surface layer 2 and the label bottom layer 1, the label bottom layer 1 and the label surface layer 2 have a protective effect on the wave antenna 4 and the micro radio frequency sensor 5, so that the wave shape The antenna 4 and the miniature radio frequency sensor 5 are not easy to leak, the radio frequency tag has strong bending resistance, and the manufacturing process of the radio frequency tag is environmentally friendly and pollution-free.

The embodiment of the present application also discloses a radio frequency tag.

Example 1:

6 and 7, a radio frequency tag, applied to the above-mentioned manufacturing method of a radio frequency tag, includes a label bottom layer 1 and a label surface layer 2, and a wave antenna 4 is installed between the label bottom layer 1 and the label surface layer 2 And the micro radio frequency sensor 5, the label bottom layer 1 and the label surface layer 2 are fixed between the label bottom layer 1 and the label surface layer 2 by adhesive glue to fix the wave antenna 4 and the micro radio frequency sensor 5 between the label bottom layer 1 and the label surface layer 2.

Further, the miniature radio frequency sensor 5 is located at the wave trough of the wave antenna 4 in the middle position, which may be in the middle wave trough, or may be at the wave trough near the middle position. The distance between the wave antenna 4 and the miniature radio frequency sensor 5 makes it unnecessary to electrically connect the wave antenna 4 and the miniature radio frequency sensor 5, but to form a common radio frequency signal transmitting source or radio frequency signal receiving source through electromagnetic induction coupling, Therefore, damage to the wiring during electrical connection is reduced.

The above-mentioned wave antenna 4 is made of metal wire 12, and the metal wire 12 may be copper wire, aluminum wire, stainless steel or other metals, or may be a wave antenna 4 made of an alloy of copper, aluminum or other metals. Further, the diameter of the metal wire 12 is in the range of 0.05-0.08 mm, and the length of the wave antenna 4 after unfolding is 0.4 m. When the length of the wire is less than 0.4m, the sensitivity of the wave antenna 4 will decrease rapidly.

The diameter of the above-mentioned miniature radio frequency sensor 5 is not more than 6 mm, and the thickness is not more than 0.2 mm. Further, the positional offset between the wave antenna 4 and the micro radio frequency sensor 5 is not more than 0.3 mm.

8 , further, the miniature radio frequency sensor 5 includes a base plate 51 and a chip 52 with two pins attached to the base plate 51 , an inner loop antenna 53 is mounted on the base plate 51 , and an outer loop antenna 53 is also provided around the inner loop antenna 53 . The loop antenna 54, the inner loop antenna 53 and the outer loop antenna 54 are all annular with a gap, and one end of the inner loop antenna 53 and one end of the outer loop antenna 54 are connected by a conductive wire 55, and the other end of the inner loop antenna 53 is connected. The other end of the outer loop antenna 54 is connected to two pins of the chip 52 respectively. The connection of the pins of the chip 52 is outside the range covered by the chip 52 on the base plate 51. In this way, the pins do not additionally occupy the entire thickness of the micro RF sensor 5, and the gap between the chip 52 and the base plate 51 is reduced, so Helps to reduce the thickness of the micro RF sensor 5 .

The above-mentioned label layer and label surface layer 2 can be made of the same material, specifically can be paper sheets such as writing paper, kraft paper, coated paper, double-adhesive paper or glossy paper, or can be PET film, PC film, PVC film, ABS Film, PE film, PP film, BOPP film and composite film and other films.

The adhesive is coated on one of the sides of the label surface layer 2 and one of the sides of the label bottom layer 1 to form an adhesive layer 3, and the wave antenna 4 and the miniature radio frequency sensor 5 are located in the label surface layer 2 near the center. The side of the label bottom layer 1 coated with the adhesive layer 3 is correspondingly attached to the side of the label surface layer 2 coated with the adhesive layer 3, so that the edges of the label bottom layer 1 and the label surface layer 2 correspond to each other. Both the wave-shaped antenna 4 and the miniature video sensor have a distance from the edge of the label surface layer 2, so that the wave-shaped antenna 4 and the miniature radio frequency sensor 5 are not easily exposed to the outside of the label surface layer 2 and the label bottom layer 1.

The above-mentioned adhesive gluing can be a pressure-sensitive adhesive, specifically, a natural rubber pressure-sensitive adhesive, a synthetic rubber pressure-sensitive adhesive, a thermoplastic elastomer pressure-sensitive adhesive, and the like. The bonding of the pressure-sensitive adhesive is relatively firm, and the wave antenna 4 and the miniature radio frequency sensor 5 are not connected by conductive glue, so it is easy to separate the miniature radio frequency sensor 5 from the radio frequency tag when disassembling, and the miniature radio frequency sensor 5 can be recovered. To achieve the purpose of repeated use, the application cost of the radio frequency tag is greatly reduced, which is beneficial to the application and promotion of the radio frequency technology.

The implementation principle of Embodiment 1 is: in this application, the wave antenna 4 and the miniature radio frequency sensor 5 are assembled between the label surface layer 2 and the label bottom layer 1, so that the wave antenna 4 and the miniature radio frequency sensor 5 are not easily exposed. The ability to bend is strong, and due to the small size of the wave-shaped antenna 4 and the miniature radio frequency sensor 5, the surface flatness of the manufactured radio frequency tag is good, and printing can be carried out; due to the simple structure of the radio frequency tag, the The cost is low, which is conducive to the promotion of radio frequency technology.

Example 2:

The difference between this embodiment and Embodiment 1 is that the materials of the label bottom layer 1 and the label surface layer 2 are spunlace non-woven fabrics, heat-bonded non-woven fabrics, pulp air-laid non-woven fabrics, wet-laid non-woven fabrics, Nonwoven materials such as spunbond nonwovens, meltblown nonwovens, needle punched nonwovens or stitchbonded nonwovens. From the material distinction, the meltblown cloth can also be a PET non-woven fabric or a PP non-woven fabric.

The type of the above-mentioned adhesive is PUR type hot-melt adhesive, which can be specifically thermoplastic PU elastomer hot-melt adhesive or reactive PU hot-melt adhesive.

The implementation principle of Example 2 is as follows: the non-woven fabric can be washed with water, so the manufactured radio frequency tag is resistant to bending, does not easily affect the radio frequency function of the radio frequency tag, and is suitable for making laundry tags.

Example 3:

The difference between this embodiment and Embodiment 1 is that the material of the label bottom layer 1 and the label surface layer 2 can be rubber sheets, and the adhesive can be rubber-type glue made of synthetic rubber as the base material, such as neoprene rubber Glue, HY-308 metal rubber glue, HY-T160PE slow-drying glue, HY-T160PP slow-drying glue, etc. or cold sulfur glue, etc. The adhesion between the rubber-type glue and the rubber sheet is relatively firm, and the performance between the rubber-type glue and the rubber sheet is better.

The implementation principle of Embodiment 3 is: when the external force pulls the label to extend, the corrugated wave antenna 4 and the label bottom layer 1 of the rubber skin extend the wave antenna 4 and the stability of the miniature radio frequency sensor 5, which ensures that the tires are not affected. When the label is stretched by external force, its radio frequency performance is not affected; the connection between the wave antenna 4 and the miniature radio frequency sensor 5 is simple, and no welding pins are required, so the cost is low, the versatility is strong, and the PCB is eliminated. Therefore, this embodiment does not need to protect the fragile PCB board, and can be directly installed on the outer side of the tire instead of the inner side of the tire. The installation method of the tire label is simple and the signal is better.

The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore: all equivalent changes made according to the structure, shape and principle of the present application should be covered within the scope of the present application. Inside.

Claims

A method for manufacturing a radio frequency tag, comprising the following steps:

Install the wave antenna (4), and paste the wave antenna (4) on the label surface layer (2) on the side coated with the adhesive layer (3);

Attaching the micro radio frequency sensor (5), pasting the micro radio frequency sensor (5) on the designated position of the label surface layer (2), the micro radio frequency sensor (5) and the wave antenna (4) are both arranged on the label surface layer (2) on the same side; the designated position is the wave trough of the wave antenna (4) in the middle position; the wave antenna (4) and the miniature radio frequency sensor (5) are spaced apart;

The label is compounded, and the label surface layer (2) pasted with the wave antenna (4) and the micro radio frequency sensor (5) is pressed with the label bottom layer (1) to make the wave antenna (4) and the micro radio frequency sensor (5) Both are located between the label surface layer (2) and the label bottom layer (1) to obtain a radio frequency label.
The manufacturing method of a radio frequency tag according to claim 1, wherein the wave antenna (4) is located above the label surface layer (2), so that the wave antenna (4) is cut and dropped to the on the adhesive layer (3) of the label surface layer (2).
The manufacturing method of a radio frequency tag according to claim 1, characterized in that: before the micro radio frequency sensor (5) is attached, the micro radio frequency sensor (5) is adhered to the release tape (13).
The manufacturing method of a radio frequency tag according to claim 3, characterized in that: the micro radio frequency sensor (5) is positioned with the wave antenna (4) by a photoelectric identification system, so that the micro radio frequency sensor (5) is connected to the wave antenna (4). The position of the shaped antenna (4) is corresponding.
The manufacturing method of a radio frequency tag according to claim 1, characterized in that: the wire speed of the wire (12) is consistent with the paper speed of the label surface layer (2), so that the wave antenna (4) ) is stably bonded to the adhesive layer (3) of the label surface layer (2).
The manufacturing method of a radio frequency tag according to claim 2, characterized in that: the paper running of the label surface layer (2) and the wire (12) of the metal wire (12) have the same stop time, and within the stop time, the The wire (12) is cut.
The manufacturing method of a radio frequency tag according to claim 1, characterized in that: the paper running of the label surface layer (2) and the wire (12) of the metal wire (12) have the same stop time, and within the stop time, the micro The radio frequency sensor (5) is pressed to the designated position.
A radio frequency tag, characterized in that it is applied to the manufacturing method of a radio frequency tag according to any one of the above claims 1 to 7, comprising a label bottom layer (1) and a label surface layer (2), the label bottom layer (1) ) and the label surface layer (2) are provided with a wave-shaped antenna (4) and a miniature radio frequency sensor (5), and the label bottom layer (1) and the label surface layer (2) are attached to each other by adhesive.
A radio frequency label according to claim 8, characterized in that: the label bottom layer (1) or the label surface layer (2) is a sheet of paper and/or a film, and the adhesive is a pressure-sensitive adhesive.
A radio frequency tag according to claim 8, characterized in that: the label bottom layer (1) and the label surface layer (2) are non-woven fabrics, and the adhesive is PUR type hot melt adhesive.
A radio frequency tag according to claim 8, characterized in that: the label bottom layer (1) and the label surface layer (2) are rubber sheets, and the adhesive is rubber-type glue.
A radio frequency tag according to claim 8, characterized in that: the wave antenna (4) is made of metal wire (12).
The radio frequency tag according to claim 12, wherein the diameter of the metal wire (12) ranges from 0.05 to 0.08 mm.
A radio frequency tag according to claim 8, characterized in that: the length of the wave antenna (4) after unfolding is 0.4m.
A radio frequency tag according to claim 8, characterized in that: the diameter of the micro radio frequency sensor (5) is not more than 6 mm, and the thickness is not more than 0.2 mm.
A radio frequency tag according to claim 8, characterized in that the positional offset between the wave antenna (4) and the miniature radio frequency sensor (5) is not greater than 0.3 mm.