Printed antenna electronic tag and preparation method thereof

Abstract

The invention relates to the technical field of electronic tag manufacturing, in particular to a printed antenna electronic tag and a preparation method, adopted conductive ink is high in conductivity, resistance loss of an RFID tag is reduced, and signal transmission efficiency is improved. And the wear resistance, water resistance, scratch resistance and the like of the prepared printed antenna electronic tag are remarkably improved. The electronic tag can keep a long service life in various environments, tag failure caused by physical damage is reduced, the anti-fake performance of the tag is improved by adding the anti-fake additive in the UV covering film and printing anti-fake information on the covering film layer, circulation of counterfeit and shoddy products is effectively prevented, and the anti-fake performance of the electronic tag is improved. In this way, the technical problems that a printed antenna electronic tag prepared in the prior art is poor in wear resistance and anti-counterfeiting performance, and the service life of the printed antenna electronic tag is short due to the poor wear resistance are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic tag manufacturing, and in particular to an electronic tag with a printed antenna and a manufacturing method thereof. Background Art

[0002] Electronic tags are the carriers of RFID technology, which is an intelligent identification technology that can store and transmit data. As a data carrier, electronic tags can play the role of identification, item tracking, and information collection. RFID technology has been widely used in many fields such as industrial automation and commercial automation. For example, its application in logistics, warehousing, retail and other fields is becoming more and more extensive. The traditional RFID tag antenna manufacturing process mainly includes etching, coil winding and printing. Among the above methods, the printing method is favored because of its low cost, fast production speed and easy large-scale production.

[0003] However, the electronic tags with printed antennas prepared in the existing methods have poor performance in terms of wear resistance and anti-counterfeiting. The poor wear resistance leads to a short service life of the electronic tags with printed antennas. Summary of the invention

[0004] The purpose of the present invention is to provide a printed antenna electronic tag and a preparation method, aiming to solve the technical problem that the printed antenna electronic tag prepared in the prior art has poor performance in wear resistance and anti-counterfeiting, and the poor wear resistance leads to a short service life of the printed antenna electronic tag.

[0005] To achieve the above object, the present invention adopts a method for preparing a printed antenna electronic tag, comprising the following steps:

[0006] Step 1, selecting PET as a substrate, and performing surface pretreatment on the substrate to obtain a substrate layer;

[0007] Step 2: Printing an antenna layer on the substrate layer to form an antenna circuit pattern;

[0008] Step 3: Cover the printed antenna layer with a UV coating material, and irradiate the coating material with ultraviolet light through a UV curing device, so that the coating material is closely attached to the printed antenna layer to obtain a coating layer;

[0009] Step 4: After printing anti-counterfeiting information on the coating layer, a printed antenna electronic label can be obtained.

[0010] Among them, in step 2, the antenna layer is printed on the substrate layer to form the antenna circuit pattern in the following specific manner:

[0011] Conductive ink is printed on the substrate layer using gravure printing, silk screen printing or inkjet printing to form an antenna circuit pattern.

[0012] The conductive ink preparation method used is as follows:

[0013] High-purity, uniformly dispersed silver nanoparticles, environmentally friendly acrylic resin, ethanol and propylene glycol methyl ether mixed solvent, dispersant, defoamer and leveling agent are mixed in proportion and added into a high-speed disperser for dispersion treatment;

[0014] After the dispersion is completed, it is ground and refined by a sand mill;

[0015] After the refinement is completed, adjust the ink viscosity to a viscosity of 10000s.

[0016] Among them, in step three, the UV coating material used includes 45%-70% polyurethane resin, 5%-15% curing agent, 10%-20% wear-resistant additives, 2%-6% anti-counterfeiting additives, 1%-2% flame retardants, 2%-4% plasticizers and 2%-5% other additives.

[0017] The UV coating material used also includes 1%-2% of an antistatic agent, and the antistatic agent is a polymer antistatic agent.

[0018] Among them, the curing agent is an isocyanate curing agent, the wear-resistant additive is nano-silica or alumina, the anti-counterfeiting additive is a fluorescent pigment or a thermosensitive pigment, the other additives include one of a leveling agent and a defoaming agent, the flame retardant is a halogen flame retardant or a phosphorus flame retardant, and the plasticizer is a phthalate.

[0019] In step 3, the UV curing equipment used irradiates the coating material with ultraviolet light with a wavelength of 350-380nm and a light intensity of 1200-1500mj / cm 2 , irradiation time 20-30s.

[0020] The present invention also provides a printed antenna electronic tag, which is prepared by the above-mentioned method for preparing a printed antenna electronic tag.

[0021] It comprises a base layer, an antenna layer and a coating layer, wherein the antenna layer is arranged on the base layer, and the coating layer covers the antenna layer.

[0022] The invention discloses a printed antenna electronic tag and a preparation method thereof. First, PET is selected as a substrate, and the surface of the substrate is pretreated to obtain a substrate layer; an antenna layer is printed on the substrate layer to form an antenna circuit pattern; a UV coating material is covered on the printed antenna layer, and the coating material is irradiated with ultraviolet light by a UV curing device to make the coating material closely adhere to the printed antenna layer to obtain a coating layer; anti-counterfeiting information is printed on the coating layer to obtain a printed antenna electronic tag. By using high-purity and uniformly dispersed silver nanoparticles as conductive fillers, the conductive performance of the conductive ink is significantly improved, the resistance loss of the RFID tag is reduced, and the signal transmission efficiency is improved. The method significantly improves the wear resistance, water resistance, scratch resistance and other properties of the prepared printed antenna electronic tag through a specific UV coating material formula and ratio. This allows the electronic tag to maintain a longer service life in various environments, reducing label failure caused by physical damage. By adding anti-counterfeiting additives to the UV covering film in the method and printing anti-counterfeiting information on the covering layer, the anti-counterfeiting performance of the label is improved, and the circulation of counterfeit and shoddy products is effectively prevented. The use of UV curing equipment does not require the use of harmful solvents, which meets environmental protection requirements. The added antistatic agent has a long-lasting antistatic effect and is less affected by environmental humidity. The use of specific antistatic agents in combination synergistically enhances the effect, which helps to maintain and enhance the high mechanical strength and antistatic durability of the polyurethane acrylic resin UV light-curing coating. At the same time, compared with the traditional etching method and coil winding method, the method uses a printing method to prepare RFID tag antennas, which has the advantages of fast production speed and low cost, and is suitable for large-scale production, which helps to reduce production costs. In this way, the printed antenna electronic tags prepared in the prior art have poor performance in wear resistance and anti-counterfeiting, and the poor wear resistance leads to a short service life of the printed antenna electronic tags. Technical problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a flow chart of the steps of the method for preparing the printed antenna electronic tag of the present invention. DETAILED DESCRIPTION

[0025] Embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0026] See also Figure 1 , Figure 1 It is a flow chart of the steps of the method for preparing the printed antenna electronic tag of the present invention.

[0027] The present invention provides a method for preparing an electronic tag with a printed antenna.

[0028] The steps include:

[0029] Step 1, selecting PET as a substrate, and performing surface pretreatment on the substrate to obtain a substrate layer;

[0030] Step 2: Printing an antenna layer on the substrate layer to form an antenna circuit pattern;

[0031] Step 3: Cover the printed antenna layer with a UV coating material, and irradiate the coating material with ultraviolet light through a UV curing device, so that the coating material is closely attached to the printed antenna layer to obtain a coating layer;

[0032] Step 4: After printing anti-counterfeiting information on the coating layer, a printed antenna electronic label can be obtained.

[0033] In step 1, the thickness of the substrate used is 50-350 microns, and the surface pretreatment of the substrate includes corona treatment or plasma treatment.

[0034] In step 2, the antenna layer is printed on the substrate layer to form the antenna circuit pattern in the following specific manner:

[0035] Conductive ink is printed on the substrate layer using gravure printing, silk screen printing or inkjet printing to form an antenna circuit pattern.

[0036] The conductive ink used is prepared as follows:

[0037] High-purity, uniformly dispersed silver nanoparticles, environmentally friendly acrylic resin, ethanol and propylene glycol methyl ether mixed solvent, dispersant, defoamer and leveling agent are mixed in proportion and added into a high-speed disperser for dispersion treatment;

[0038] After the dispersion is completed, it is ground and refined by a sand mill;

[0039] After the refinement is completed, adjust the ink viscosity to a viscosity of 10000s.

[0040] In step three, the UV coating material used includes 45%-70% polyurethane resin, 5%-15% curing agent, 10%-20% wear-resistant additives, 2%-6% anti-counterfeiting additives, 1%-2% flame retardants, 2%-4% plasticizers and 2%-5% other additives.

[0041] The UV coating material used also includes 1%-2% of an antistatic agent, and the antistatic agent is a polymer antistatic agent.

[0042] The curing agent is an isocyanate curing agent, the wear-resistant additive is nano-silica or alumina, the anti-counterfeiting additive is a fluorescent pigment or a thermosensitive pigment, the other additives include one of a leveling agent and a defoaming agent, the flame retardant is a halogen flame retardant or a phosphorus flame retardant, and the plasticizer is a phthalate.

[0043] In step 3, the UV curing equipment used irradiates the coating material with ultraviolet light with a wavelength of 350-380nm and a light intensity of 1200-1500mj / cm 2 , irradiation time 20-30s.

[0044] Example 1: In this example, in step 3, the UV coating material used includes 50% polyurethane resin, 15% curing agent, 20% wear-resistant additives, 6% anti-counterfeiting additives, 2% flame retardants, 3% plasticizers, 2% antistatic agents and 2% other additives. In this example, the UV curing equipment used irradiates the coating material with ultraviolet light with a wavelength of 350nm and a light intensity of 1200mj / cm 2 , irradiation time 20s.

[0045] Example 2: In this example, in step 3, the UV coating material used includes 60% polyurethane resin, 15% curing agent, 15% wear-resistant additive, 2% anti-counterfeiting additive, 1% flame retardant, 2% plasticizer, 2% antistatic agent and 3% other additives. In this example, the UV curing equipment used irradiates the coating material with ultraviolet light with a wavelength of 365nm and a light intensity of 1350mj / cm 2 , irradiation time 25s.

[0046] Example 3: In this example, in step 3, the UV coating material used includes 65% polyurethane resin, 10% curing agent, 12% wear-resistant additives, 5% anti-counterfeiting additives, 1% flame retardant, 4% plasticizer, 1% antistatic agent and 1% other additives. In this example, the UV curing equipment used irradiates the coating material with ultraviolet light with a wavelength of 380nm and a light intensity of 1500mj / cm 2 , irradiation time 30s.

[0047] The method for preparing a printed antenna electronic tag of the present invention comprises the following steps: firstly selecting PET as a substrate, and performing surface pretreatment on the substrate to obtain a substrate layer; printing an antenna layer on the substrate layer to form an antenna circuit pattern; covering the printed antenna layer with a UV coating material, and irradiating the coating material with ultraviolet light through a UV curing device to make the coating material closely adhere to the printed antenna layer to obtain a coating layer; and printing anti-counterfeiting information on the coating layer to obtain a printed antenna electronic tag. By using high-purity and uniformly dispersed silver nanoparticles as conductive fillers, the conductive performance of the conductive ink is significantly improved, the resistance loss of the RFID tag is reduced, and the signal transmission efficiency is improved. The method significantly improves the wear resistance, water resistance, scratch resistance and other properties of the prepared printed antenna electronic tag through a specific UV coating material formula and ratio. This allows the electronic tag to maintain a longer service life in various environments, reducing label failure caused by physical damage. By adding anti-counterfeiting additives to the UV covering film in the method and printing anti-counterfeiting information on the covering layer, the anti-counterfeiting performance of the label is improved, and the circulation of counterfeit and shoddy products is effectively prevented. The use of UV curing equipment does not require the use of harmful solvents, which meets environmental protection requirements. The added antistatic agent has a long-lasting antistatic effect and is less affected by environmental humidity. The use of specific antistatic agents in combination synergistically enhances the effect, which helps to maintain and enhance the high mechanical strength and antistatic durability of the polyurethane acrylic resin UV light-curing coating. At the same time, compared with the traditional etching method and coil winding method, the method uses a printing method to prepare RFID tag antennas, which has the advantages of fast production speed and low cost, and is suitable for large-scale production, which helps to reduce production costs. In this way, the printed antenna electronic tags prepared in the prior art have poor performance in wear resistance and anti-counterfeiting, and the poor wear resistance leads to a short service life of the printed antenna electronic tags. Technical problems.

[0048] The present invention also provides a printed antenna electronic tag, which is prepared by the above-mentioned method for preparing a printed antenna electronic tag.

[0049] It comprises a base layer, an antenna layer and a coating layer, wherein the antenna layer is arranged on the base layer, and the coating layer covers the antenna layer.

[0050] The coating layer significantly improves the wear resistance, water resistance, scratch resistance and other properties of the label through a specific UV coating material formula and ratio, so that the electronic label can maintain a longer service life in various environments, reducing the failure of the label due to physical damage. By introducing anti-counterfeiting additives and printing anti-counterfeiting information (such as QR codes, digital watermarks, etc.) on the coating layer, the anti-counterfeiting performance of the label is effectively improved. This helps prevent the circulation of counterfeit and shoddy products and protect the rights and interests of brands and consumers. The addition of antistatic agents can reduce the surface resistance of the surface, thereby improving the antistatic performance. The improvement of antistatic performance helps reduce electrostatic discharge and dust absorption problems, and improves the reliability of electronic tags in sensitive environments.

[0051] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A method for preparing a printed antenna electronic tag, characterized in that: The steps include: Step 1, selecting PET as a substrate, and performing surface pretreatment on the substrate to obtain a substrate layer; Step 2: Printing an antenna layer on the substrate layer to form an antenna circuit pattern; Step 3: Cover the printed antenna layer with a UV coating material, and irradiate the coating material with ultraviolet light through a UV curing device, so that the coating material is closely attached to the printed antenna layer to obtain a coating layer; Step 4: After printing anti-counterfeiting information on the coating layer, a printed antenna electronic label can be obtained.

2. The printed antenna electronic tag and preparation method according to claim 1, characterized in that: In step 1, the thickness of the substrate used is 50-350 microns, and the surface pretreatment of the substrate includes corona treatment or plasma treatment.

3. The method for preparing a printed antenna electronic tag according to claim 2, characterized in that: In step 2, the antenna layer is printed on the substrate layer to form the antenna circuit pattern in the following specific manner: Conductive ink is printed on the substrate layer using gravure printing, silk screen printing or inkjet printing to form an antenna circuit pattern.

4. The method for preparing a printed antenna electronic tag according to claim 3, characterized in that: The conductive ink used is prepared as follows: High-purity, uniformly dispersed silver nanoparticles, environmentally friendly acrylic resin, ethanol and propylene glycol methyl ether mixed solvent, dispersant, defoamer and leveling agent are mixed in proportion and added into a high-speed disperser for dispersion treatment; After the dispersion is completed, it is ground and refined by a sand mill; After the refinement is completed, adjust the ink viscosity to a viscosity of 10000s.

5. The method for preparing a printed antenna electronic tag according to claim 4, characterized in that: In step three, the UV coating material used includes 45%-70% polyurethane resin, 5%-15% curing agent, 10%-20% wear-resistant additives, 2%-6% anti-counterfeiting additives, 1%-2% flame retardants, 2%-4% plasticizers and 2%-5% other additives.

6. The method for preparing a printed antenna electronic tag according to claim 5, characterized in that: The UV coating material used also includes 1%-2% of an antistatic agent, and the antistatic agent is a polymer antistatic agent.

7. The method for preparing a printed antenna electronic tag according to claim 6, characterized in that: The curing agent is an isocyanate curing agent, the wear-resistant additive is nano-silica or alumina, the anti-counterfeiting additive is a fluorescent pigment or a thermosensitive pigment, the other additives include one of a leveling agent and a defoaming agent, the flame retardant is a halogen flame retardant or a phosphorus flame retardant, and the plasticizer is a phthalate.

8. The method for preparing a printed antenna electronic tag according to claim 7, characterized in that: In step 3, the UV curing equipment used irradiates the coating material with ultraviolet light with a wavelength of 350-380nm and a light intensity of 1200-1500mj / cm 2 , irradiation time 20-30s.

9. A printed antenna electronic tag, prepared by the method for preparing a printed antenna electronic tag according to claim 8, characterized in that: It comprises a base layer, an antenna layer and a coating layer, wherein the antenna layer is arranged on the base layer, and the coating layer covers the antenna layer.

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