Folding woven label UHF RFID integrated industrial washing label

Abstract

The invention provides a folding woven label UHF RFID integrated industrial washing label, and relates to the technical field of label preparation, and the folding woven label UHF RFID integrated industrial washing label comprises a woven label main body, a label main body, a middle folding position, a TC fabric layer, an antenna, an RFID module and a polyester thickening layer. A woven label main body base blank is woven on a multi-axial weaving machine according to the warp and weft density of 120 * 80 and the twill interweaving angle of 85 degrees, the woven label main body base blank is immersed into an alkali-resisting color fixing agent solution after weaving is completed, ultrasonic oscillation is conducted for 30 minutes, then the woven label main body is formed through shaping in a high-temperature shaping machine at the temperature of 150 DEG C, and the woven label main body is woven through high-density cationic yarn twill. LOGO, washing instructions or brand information can be freely printed and dyed on the front face, the label body is completely hidden on the back face of the woven label after being folded in half, the touch sense is the same as that of a common woven label, hard protrusions and wrapping edge thickening traces are avoided, the problem that the grade sense of a hard white label and a pocket label is lacked is thoroughly solved, and the customer acceptability is extremely high.

Description

Technical Field

[0001] This invention relates to the field of tag manufacturing technology, specifically to a folded woven label UHF RFID integrated industrial washing tag. Background Technology

[0002] As the global textile supply chain evolves towards intelligent and closed-loop management, and industrial washing develops towards high-temperature, high-alkali, high-frequency, and multi-scenario compatibility, higher demands are placed on the flexibility, durability, concealment, and automated sewing compatibility of UHF RFID washing tags. Especially in high-turnover scenarios such as hospital gowns, hotel linens, and school uniforms, the tags need to have an appearance and feel indistinguishable from ordinary woven labels, withstand over 200 cycles of 90℃ drum washing, have stable reading distances, and support direct feeding onto existing customer label sewing equipment. Currently, RFID industrial washing tags are widely used in apparel asset tracking and washing management. However, existing RFID industrial washing tags are typically sewn onto linens or other fabric goods using two methods: one is to directly sew a white rigid RFID washing tag onto the fabric, and the other is to insert the RFID module into a pocket label made of woven material before sewing. Both methods fail to meet market demands and present the following key technical challenges:

[0003] 1. Insufficient appearance and customer acceptance: Directly sewn hard white RFID tags are stiff and monochromatic, making it difficult to print logos, washing instructions, or brand information on the surface, resulting in a lack of product quality and low customer acceptance; Although pocket labels can partially hide the RFID module, the four sides of the woven label need to be bound, heat-pressed, or thickened to withstand industrial washing, which damages the original soft texture and exquisite appearance of the woven label, greatly reducing the overall aesthetic appeal;

[0004] 2. The sewing process is incompatible and the production efficiency is low. Hard labels require additional holes or special sewing machines, which deviates from the customer's original woven label sewing process and increases the cost of production line modification. Pocket labels require manual insertion of RFID modules before sewing, which has a low degree of automation and increases the sewing time of a single piece by 3-5 times. It is not compatible with high-speed automatic label sewing equipment, which limits the large-scale application.

[0005] 3. The contradiction between integrated structure and washability and maintainability: existing labels cannot truly integrate woven label and RFID functions. The RFID module, antenna and woven label are separately packaged, which makes them prone to displacement, breakage or leakage during washing. The failure rate is high after 200 cycles, and the whole piece must be scrapped after damage. There is a lack of local replaceable design, and the maintenance cost is high. It is difficult to meet the customer's need to retain the original sewing habits while achieving durable tracking.

[0006] Therefore, a folded woven label UHF RFID integrated industrial washing label is needed to solve the above problems. Summary of the Invention

[0007] Technical problems to be solved

[0008] To address the shortcomings of existing technologies, this invention provides a folded woven label UHF RFID integrated industrial washing label, which solves the problems mentioned in the background technology.

[0009] Technical solution

[0010] To achieve the above objectives, the present invention provides the following technical solution: a folded woven label UHF RFID integrated industrial washing label, comprising a woven label body, a label body, a folded section, a TC fabric layer, an antenna, an RFID module, and a polyester thickened layer, wherein the manufacturing process steps are as follows:

[0011] Sp1: High-density cationic yarn is selected and treated with plasma de-hairing. It is then woven on a multi-axial loom with a warp and weft density of 120×80 and a twill weave angle of 85° to form the main body of the woven label. After weaving, it is immersed in an alkali-resistant color-fixing agent solution and ultrasonically vibrated for 30 minutes. Then it is fixed in a 150°C high-temperature setting machine to form a flexible woven label body.

[0012] Sp2: A laser etching machine is used to create a repeatable fold crease at a preset depth of 0.1mm on the center back of the woven label;

[0013] Sp3: Select a single-layer TC fabric with a cotton content of ≥60%, soften it by bio-enzyme washing, spray a nano-level hydrophilic silicone oil layer in a vacuum spraying machine, and flatten and dry it in an 80℃ roller calender to obtain the TC fabric layer.

[0014] Sp4: Hot melt PU adhesive dot matrix is ​​pre-coated in the middle of the TC fabric layer. After the 0.5mm thick soft polyester fabric is activated by plasma surface, it is aligned and bonded by infrared positioning system. 2 bar pressure is applied and hot-pressed for 5 seconds to locally composite the polyester thickened layer.

[0015] Sp5: The antenna primary pattern (circular in the middle, rings on both sides, and wavy on the outermost side) is formed by printing non-magnetic silver paste on the TC fabric layer using a screen printing machine. After UV curing for 10 seconds, the pattern is double-layered with imported non-magnetic metal thread along the printed trajectory using a CNC embroidery machine with an embroidery spacing of ≤0.08mm.

[0016] Sp6: Use a vacuum pickup arm to place the RFID module in the middle area of ​​the antenna, apply conductive silver paste, then use pulsed laser micro-welding, pour low-temperature epoxy resin and vacuum degassing and curing.

[0017] Sp7: Apply double-sided PU adhesive between the TC fabric layer and the polyester thickened layer, and sew it in place using a double-needle overlock sewing machine with a stitch length of 2.5mm. Apply double-sided PU adhesive to the bottom of the TC fabric layer and single-sided PU adhesive to the top of the polyester thickened layer 7. Then, heat the entire assembly in an 80℃ hot air circulating oven for 2 minutes to set the label body.

[0018] Sp8: A thin layer of hot melt interface agent is pre-coated on the top back of the woven label body and the top edge of the label body. The ultrasonic welding machine is used to scan and weld along the edge at 20kHz with a pulse width of 0.5 seconds and an interval of 0.2 seconds. The weld depth is ≤0.3mm, forming an integrated structure.

[0019] Preferably, the cationic yarn in Sp1 is treated with radio frequency plasma at a frequency of 13.56MHz for 45 seconds to remove lint, and a 150°C steam pre-shrinking treatment is added before the main body of the woven label is shaped to improve wrinkle resistance.

[0020] Preferably, the TC fabric layer in Sp3 is washed with bio-enzymes using a cellulase concentration of 0.5 g / L and constant temperature oscillation at 55°C for 90 minutes, followed by neutralization rinsing and vacuum dehumidification until the moisture content is ≤8%.

[0021] Preferably, the hot melt PU adhesive matrix in Sp4 is sprayed with micro-dots with a grid spacing of 1.2mm, and the polyester thickening layer is preheated to 45°C with infrared radiation before lamination to improve the initial adhesion.

[0022] Preferably, the non-magnetic silver paste printing in Sp5 uses a 280-mesh screen and a squeegee angle of 30°, and the overlapping metal wire is pre-coated with a 0.02mm thick insulating varnish layer to prevent short circuits.

[0023] Preferably, the amount of conductive silver paste in Sp6 is controlled at 0.03 mg, the laser micro-welding uses a wavelength of 1064 nm, a pulse energy of 0.8 mJ, and a frequency of 50 kHz, and the epoxy resin is cured under a vacuum of -0.095 MPa for 15 minutes to remove bubbles.

[0024] Preferably, the PU coating thickness in the Sp7 is controlled at 0.05mm, the double-needle overlock sewing machine adopts a differential feeding mechanism, and the sewing tension is set to 0.8cN.

[0025] Preferably, in the Sp8 process, the welding edges are pre-cleaned with 40kHz ultrasonic waves to remove oil stains before ultrasonic welding, and after welding, they are rapidly cooled to below 35°C with cold air to prevent thermal deformation.

[0026] Preferably, after the overall preparation is completed, the roll is wound in a roll of 50 pieces per roll using a rolling machine, and the roll is sealed after verifying the reading rate of each piece by one by an RFID detection probe built into the roll, which is ≥99.9%.

[0027] Preferably, the woven label body has a folding section in the middle of its back side for folding, and a label body is located at the top of the back side of the woven label body. The bottom layer of the label body is a single-layer TC fabric layer, and a polyester thickening layer is added in the middle of the TC fabric layer. An RFID module is installed in the overlapping position of the middle of the TC fabric layer and the polyester thickening layer. The RFID module is coupled to an antenna. The antenna has a circular center that surrounds the RFID module, with rings on both sides near the inside and a wavy outer edge. The top edge of the back side of the woven label body and the top edge of the label body are ultrasonically welded. The TC fabric layer and the polyester thickening layer are sewn together, and there is PU adhesive between the TC fabric layer and the polyester thickening layer. The bottom of the TC fabric layer has double-sided PU adhesive, and the top of the polyester thickening layer has single-sided PU adhesive.

[0028] Beneficial effects

[0029] This invention provides a folded woven label UHF RFID integrated industrial laundry tag. It has the following beneficial effects:

[0030] In this invention, the main body of the woven label is made of high-density cationic yarn twill weave. The front can be freely printed with logos, washing instructions or brand information. The main body of the label is completely hidden on the back of the woven label after being folded in half. The feel is no different from ordinary woven labels. There are no hard protrusions or thickened edges. It completely gets rid of the lack of quality of hard white labels and pocket labels. Customers have a very high acceptance rate. It is perfectly suited for high-end patient gowns, hotel linens, school uniforms and other scenarios with strict requirements for aesthetics.

[0031] In this invention, the bottom layer of the label body is coated with double-sided PU adhesive. Customers can directly feed the label using the existing woven label sewing process and high-speed automatic label sewing equipment. After folding, the middle fold position is precisely aligned with the edge, eliminating the need for hole drilling, machine modification, or manual filling. The sewing time per piece is the same as that of ordinary woven labels, resulting in zero production line modification costs and improved efficiency for large-scale production. The roll packaging (50 labels / roll) further supports automated unpacking and feeding, completely solving the production bottleneck of existing technologies that deviate from customer habits.

[0032] In this invention, the woven label body and the tag body are sealed by ultrasonic gradient welding and glue seam double sealing, the antenna is double-layered and embroidered with a self-healing spare wire, the RFID module is suspended by silicone block and encapsulated with epoxy, and the polyester thickened honeycomb buffer and fluorinated separator can withstand 200 cycles of 90℃ high-alkali drum washing with zero displacement of the RFID module, no attenuation of reading distance, and zero leakage of the cavity. When damaged, the tag body can be removed along the dotted weak seam and a new part can be heat-applied with heat-sensitive PU glue to restore it. The woven label body is retained without disassembly, reducing maintenance costs and truly realizing the comprehensive needs of woven label and RFID functions integration, seamless preservation of customers' original sewing habits, and durable tracking. Attached Figure Description

[0033] Figure 1This is a structural diagram of the furnace body of the present invention;

[0034] Figure 2 This is a diagram of the internal structure of the furnace body of the present invention;

[0035] Figure 3 This is a structural diagram of the gas distribution ring pipe of the present invention;

[0036] Figure 4 This is a flowchart of the label manufacturing process of the present invention.

[0037] Illustration: 1. Woven label body; 2. Tag body; 3. Center fold; 4. TC fabric layer; 5. Antenna; 6. RFID module; 7. Polyester thickened layer. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Specific Implementation Example 1:

[0040] like Figures 1 to 4 As shown, a folded woven label UHF RFID integrated industrial washing label includes a woven label body 1, a label body 2, a center fold 3, a TC fabric layer 4, an antenna 4, an RFID module 6, and a polyester thickened layer 7. The manufacturing process steps are as follows:

[0041] Sp1: High-density cationic yarn is selected and treated with plasma depilation. It is then woven on a multi-axial loom with a warp and weft density of 120×80 and a twill weave angle of 85° to form the base blank of the woven label body 1. After weaving, it is immersed in an alkali-resistant color-fixing agent solution and ultrasonically vibrated for 30 minutes. Then, it is fixed in a 150°C high-temperature setting machine to form the flexible woven label body 1.

[0042] Sp2: A laser etching machine is used to pre-set the center fold position 3 at a depth of 0.1mm on the back of the main body 1 of the woven label to form a repeatable fold crease;

[0043] Sp3: Select a single-layer TC fabric with a cotton content of ≥60%, soften it by bio-enzyme washing, spray a nano-level hydrophilic silicone oil layer in a vacuum spraying machine, and flatten and dry it in an 80℃ roller calender to obtain TC fabric layer 4.

[0044] Sp4: Hot melt PU adhesive dot matrix is ​​pre-coated in the middle of TC fabric layer 4. After the 0.5mm thick soft polyester fabric is activated by plasma surface, it is aligned and bonded by infrared positioning system. 2 bar pressure is applied and hot-pressed for 5 seconds to locally composite the polyester thickened layer 7.

[0045] Sp5: The primary pattern of antenna 5 (circular in the middle, rings on both sides, and wavy on the outermost side) is formed by printing non-magnetic silver paste on the TC fabric layer 4 using a screen printing machine. After UV curing for 10 seconds, double-layer embroidery is carried out using imported non-magnetic metal thread along the printed trajectory using a CNC embroidery machine with an embroidery spacing of ≤0.08mm.

[0046] Sp6: Use a vacuum pickup arm to place the RFID module 6 in the middle area of ​​the antenna 5, apply conductive silver paste, then micro-weld it with pulsed laser, pour low-temperature epoxy resin and vacuum degassing and curing.

[0047] Sp7: Apply double-sided PU adhesive between TC fabric layer 4 and polyester thickened layer 7, and sew it in place using a double-needle overlock sewing machine with a stitch length of 2.5mm. Apply double-sided PU adhesive to the bottom of TC fabric layer 4 and single-sided PU adhesive to the top of polyester thickened layer 7. Then, heat the entire product in an 80℃ hot air circulating oven for 2 minutes to set the label body 2.

[0048] Sp8: A thin layer of hot melt interface agent is pre-coated on the top back of the woven label body 1 and the top edge of the label body 2. The ultrasonic welding machine is used to scan and weld along the edge at 20kHz with a pulse width of 0.5 seconds and an interval of 0.2 seconds. The weld depth is ≤0.3mm, forming an integrated structure.

[0049] The depilatory treatment of the cationic yarn in Sp1 is carried out by radio frequency plasma treatment at a frequency of 13.56MHz for 45 seconds. Before the main body of the woven label 1 is shaped, a 150℃ steam pre-shrinking treatment is added to improve the wrinkle resistance.

[0050] Sp3 TC fabric layer 4 bio-enzyme washing uses cellulase concentration of 0.5g / L, constant temperature shaking at 55℃ for 90 minutes, followed by neutralization rinsing and vacuum dehumidification until the moisture content is ≤8%.

[0051] In Sp4, the hot melt PU adhesive matrix is ​​sprayed with micro-dots with a grid spacing of 1.2mm. The polyester thickened layer 7 is preheated to 45℃ by infrared radiation before bonding to improve the initial adhesion.

[0052] Sp5 non-magnetic silver paste printing uses a 280-mesh screen and a 30° squeegee angle. The embroidered metal wire is pre-coated with a 0.02mm thick insulating varnish layer to prevent short circuits.

[0053] The amount of conductive silver paste applied in Sp6 was controlled at 0.03 mg. Laser micro-welding was performed using parameters of 1064 nm wavelength, 0.8 mJ pulse energy, and 50 kHz frequency. Epoxy resin was cured under vacuum of -0.095 MPa for 15 minutes to remove bubbles.

[0054] The thickness of the PU roller coating in the Sp7 is controlled at 0.05mm. The double-needle overlock sewing machine adopts a differential feeding mechanism, and the sewing tension is set to 0.8cN.

[0055] Before ultrasonic welding in Sp8, the welding edges are pre-cleaned with 40kHz ultrasonic to remove oil and dirt. After welding, the edges are rapidly cooled to below 35°C with cold air to prevent thermal deformation.

[0056] After the overall preparation is completed, the rolls are wound in 50 pieces per roll using a rolling machine. The rolls are sealed after each piece is verified by an RFID detection probe built into them to ensure a read rate of ≥99.9%.

[0057] The back of the woven label body 1 has a folding point 3 in the middle, which can be folded in half. The label body 2 is located at the top of the back of the woven label body 1. The bottom layer of the label body 2 is a single-layer TC fabric layer 4. A polyester thickened layer 7 is added in the middle of the TC fabric layer 4. An RFID module 6 is installed in the overlapping position of the middle of the TC fabric layer 4 and the polyester thickened layer 7. The RFID module 6 is coupled to an antenna 5. The antenna 5 is circular in the middle, surrounding the RFID module 6. The two inner sides are ring-shaped, and the outermost end is wavy. The top edge of the back of the woven label body 1 and the top edge of the label body 2 are ultrasonically welded. The TC fabric layer 4 and the polyester thickened layer 7 are sewn together. At the same time, there is PU glue between the TC fabric layer 4 and the polyester thickened layer 7. The bottom of the TC fabric layer 4 is double-sided with PU glue, and the top of the polyester thickened layer 7 is single-sided with PU glue. Specific Implementation Example 2:

[0059] like Figures 1 to 4 As shown, the following is a further explanation of the process steps in the above-described Embodiment 1:

[0060] SP1: Weaving and Pre-treatment of the Main Body of the Woven Label

[0061] High-density cationic yarn is selected and first treated with 13.56MHz radio frequency plasma for 45 seconds to remove surface fuzz, then removed by an online electrostatic eliminator (8kV corona discharge) to remove fly ash and dust. Subsequently, the base fabric is woven on a multi-axial loom with a warp and weft density of 120×80 and a twill weave angle of 85°. The loom is equipped with an optical defect scanner (0.1mm resolution) to mark defects in real time. Immediately after weaving, the fabric is immersed in a pH=9.5 alkali-resistant color-fixing agent solution (circulating and filtered, impurities <5ppm) and ultrasonically vibrated for 30 minutes to ensure colorfastness. It then undergoes a double treatment of 150℃ steam pre-shrinking and high-temperature setting, resulting in uniform shrinkage and excellent wrinkle resistance, forming the flexible woven label body 1.

[0062] Sp2: Mid-fold molding and reinforcement

[0063] On the back center of the woven label body 1, a 355nm ultraviolet laser etching machine (pulse frequency 80kHz, power 3W) is used to pre-set the V-shaped center fold position 3 at a depth of 0.1±0.02mm. Immediately after etching, a polyurethane elastic film (dry film thickness 8μm) is atomized and sprayed into the groove to enhance fiber bridging and improve resilience. After molding, an automatic folding robot arm simulates 100 opening and closing cycles, and semi-finished products with fold deviation >0.3mm are removed to ensure that the folded edges are flush and resistant to repeated bending.

[0064] Sp3: TC fabric layer softening and hydrophilic treatment

[0065] A single-layer TC fabric containing 65% cotton was selected. After softening with cellulase (0.5g / L, 55℃) and shaking for 90 minutes, it was neutralized, rinsed, and vacuum-bleached to a low moisture content. It then underwent a second low-temperature plasma hydrophilic activation (150W, 20 seconds) followed by vacuum spraying with 30nm particle size hydrophilic silicone oil, forming a gradient permeation layer with a hydrophilic surface and a hydrophobic core, resulting in quick-drying, non-sticky, and moisture-wicking properties. Infrared temperature measurement was used to control fluctuations within ±2℃ before calendering at 80℃, resulting in a smooth and soft fabric surface, thus producing TC fabric layer 4.

[0066] SP4: Partially composited polyester thickened layer

[0067] Light-colored infrared positioning crosshairs (water-based ink, later evaporated at high temperature) are pre-printed in the middle of TC fabric layer 4. Hot-melt PU adhesive (0.3mm diameter per dot) is then sprayed onto the fabric at a 1.2mm grid spacing. A 0.5mm thick soft polyester fabric is then surface-activated by plasma and preheated to 45℃ using infrared technology. It is then aligned and bonded using an infrared positioning system (accuracy ±0.1mm) and a vacuum adsorption stage, and hot-pressed for 5 seconds under 2 bar pressure. After lamination, X-ray inspection is used to check the uniformity of the adhesive dots, eliminating defects with voids >0.5mm². Local thickening significantly enhances compressive strength while adding minimal weight.

[0068] Sp5: Antenna Printing and Embroidery Reinforcement

[0069] The antenna's primary pattern (a central circle, two side rings, and an outer wavy shape) is formed using a 280-mesh screen and a 30° squeegee angle to print non-magnetic silver paste, achieving high line width precision. After UV curing for 10 seconds, it is slowly cooled in a 60°C oven to release stress. Subsequently, a CNC embroidery machine is used to embroider double layers of imported non-magnetic metal thread pre-coated with 0.02mm insulating varnish, with an embroidery spacing ≤0.08mm and tension adaptive control fluctuation <0.5cN. After embroidery, it undergoes 1000 pre-bending cycles on a bending tester (5mm radius, 2Hz) to remove components with abnormal resistance values, ensuring stable antenna performance and global frequency band coverage.

[0070] SP6: RFID module coupling package

[0071] Using a vacuum pickup arm (positioning accuracy ±0.05mm), a 3×3mm ImpinjM800 RFID module 6 was placed in the central circular area of ​​the antenna. After applying 0.03mg of conductive silver paste, it was micro-welded using a 1064nm laser (0.8mJ, 50kHz), resulting in a strong solder joint. A 15μm UV insulating varnish was sprayed on the solder joints after soldering to protect them. A two-component epoxy resin (A:B=100:28) was automatically mixed and poured, followed by vacuum degassing (-0.095MPa, 15 minutes) and a 5-minute settling period to ensure no bubbles remained. After encapsulation, in-situ UHF activation was performed and written to the EPC. Failed reads were returned to the circuit to ensure tight coupling and resistance to bending.

[0072] SP7: Label body adhesive seam shaping

[0073] A 0.05±0.005mm layer of PU adhesive (measured by online laser) is applied between the TC fabric layer 4 and the polyester thickened layer 7. The layers are then sewn together using a double-needle overlock sewing machine (differential feed ratio 1:1.05, tension 0.8cN, stitch length 2.5mm). The bottom of the TC fabric layer 4 is coated with PU adhesive on both sides, and the top of the polyester thickened layer 7 is coated with PU adhesive on one side. The entire layer is then kept warm in 80℃ hot air circulation for 2 minutes to promote penetration. Finally, it is subjected to a second shaping process using cold pressure rollers (1.5 bar, 25℃), resulting in a flat and warped label body 2.

[0074] Sp8: Ultrasonic Integrated Welding

[0075] The welding edges were first pre-cleaned with 40kHz ultrasound and 0.2% nonionic surfactant to remove oil stains, and then coated with a nano-SiO2 thickened hot melt interface agent (15μm thick). A 20kHz ultrasonic welding machine (0.5s pulse / 0.2s interval) was used to scan and weld along the top of the back of the woven label body 1 to the top of the label body 2. Infrared thermal imaging monitored the peak temperature as <135℃, and the weld depth as ≤0.3mm. After welding, the area was rapidly cooled to 32℃ with cold air. Random checks showed a tensile strength >25N, and the weld was strong and showed no thermal deformation.

[0076] Final roll packaging and quality inspection:

[0077] The integrated label undergoes AOI optical inspection (5μm resolution) to identify surface defects, and the RFID probe verifies the read rate and RSSI distribution consistency for each label individually. Qualified products are wound in rolls of 50 labels each, with the roll containing an anti-static PE film, desiccant, and a temperature and humidity recording card, facilitating direct feeding into customers' automated label-sewing equipment.

[0078] This complete process achieves industrial-grade mass production capabilities by innovating a series of technologies, including plasma depilation, electrostatic elimination, laser creasing, elastic membrane bridging, enzyme washing gradient hydrophilicity, micro-dot infrared positioning, double-layer stress release embroidery, laser micro-welding insulation, in-situ activation, differential cold pressing shaping, ultrasonic pre-cleaning intermittent welding, and AOI / RSSI dual inspection. These technologies enable labels to be as soft as ordinary woven labels, have globally consistent readability, withstand multiple extreme industrial washes without degradation, and be batch-traceable. Specific Implementation Example 3:

[0080] like Figures 1 to 4 As shown, the following is a further explanation of the label structure in the above embodiments:

[0081] Woven label body 1: High-density cationic yarn twill weave, moderate weight, logo can be printed on the front. The back has a 0.1mm deep V-shaped fold 3 laser-etched in the center and infiltrated with a polyurethane elastic film, so that the edges are flush after folding and can withstand repeated opening and closing; sparse weft floats are woven into the outer 0.5mm of the welding area to form a micro-convex dot matrix, which becomes "rivet" anchor points after ultrasonic melting to disperse tensile stress; the edges are locked and covered, and the cut does not fall apart.

[0082] TC Fabric Layer 4: A 0.35mm thick, 65% cotton single-layer blended fabric with 3% spandex in the weft direction for slight elasticity, allowing it to naturally stretch with the collar without constricting the neck. The outer side of the thickened central area features laser-drilled plum blossom-shaped micropores (80μm diameter, 2mm spacing), with a hydrophilic coating inside the pores forming one-way moisture-wicking channels to allow sweat to escape and prevent detergent penetration. The bottom is coated with temperature-sensitive double-sided PU adhesive (softens at 60℃) for easy sewing or seamless removal.

[0083] Polyester thickened layer 7: 18mm×22mm in size, 0.5mm thick, with internal hot-pressed pre-fabricated honeycomb microcavities (0.12mm wall thickness, 0.3mm cavity height) to buffer compression, ensuring uniform force distribution on the RFID module 6; surface plasma fluorination treatment reduces wettability and isolates against high-temperature alkaline solutions. A single-sided PU adhesive coating on the top enhances cavity sealing, forming a sealed cavity with the TC fabric layer 4 via PU adhesive and overlock stitching. A pre-set dotted weak seam (5mm stitch spacing, only 60% thread strength) on the top of the cavity facilitates complete removal and replacement.

[0084] Antenna 5: 48mm in total length, with a thin and uniform silver paste printing layer and double-layer reinforcement with embroidered fine metal wires. A central circular ring (4mm inner diameter) surrounds the RFID module 6, with two side ring sections (6mm radius) transitioning to the outermost wavy section (3.5mm peak spacing, amplitude gradually changing from 2 to 0.5mm), extending the effective electrical length, smoothing impedance matching, and improving far-field performance. A 0.05mm spare conductor is pre-embroidered at the top of each peak, running parallel to the main line. In case of breakage during washing, stress-induced automatic splicing enables signal self-healing.

[0085] RFID Module 6: The bottom of the 3×3mm ImpinjM800 RFID module 6 is coated with conductive silver paste to couple the antenna. It is suspended and encapsulated with elastic silicone pads (0.2mm high) at the four corners, maintaining a 0.1mm air gap to reduce parasitic capacitance. The top is encapsulated with a flat epoxy resin layer and laser-etched with a 0.8mm×0.8mm QR code (unique serial number) for easy tracking. The total height does not exceed that of the thickened layer 7, and the surface is free of protrusions.

[0086] Connection Interface: The top back of the woven label body 1 and the top of the label body 2 are ultrasonically welded to form an 8mm wide gradient weld strip (0.3→0.1mm wedge-shaped depth), with intermittently distributed weld points (1.5mm spacing), preserving the fiber structure and providing strong pull-out force. The TC fabric layer 4 and the polyester thickened layer 7 are glued together, and the interlocking of the seam and adhesive layer enhances the strength.

[0087] Overall Features: After folding, the inner V-groove at the center fold 3 creates a 0.2mm ventilation gap to prevent stuffiness; the four corners are rounded with an R1.5mm radius to eliminate any sharp edges; the RFID module 6 area is locally thickened for pressure resistance and has low overall bending stiffness; the antenna's wavy ring and spare wire ensure stable signal under folding, compression, and twisting; the cavity features honeycomb cushioning, fluorinated alkali barrier, and microporous moisture-wicking to keep the interior dry for extended periods; the dotted weak seam and temperature-sensitive adhesive support non-destructive replacement. This structure achieves a comprehensive performance of extreme softness and skin-friendliness, strong concealment, permanent RFID module 6, zero signal dead zones, resistance to extreme industrial washing, and easy maintenance, making it perfectly suited for high-frequency washing scenarios such as hospitals, hotels, and school uniforms. Specific Implementation Example 4:

[0089] like Figures 1 to 4 As shown, the following are applications of labels produced using this process in actual operations:

[0090] The following is the complete application process of folded woven label UHF RFID integrated industrial washing tags in the closed-loop management of hospital patient gowns:

[0091] This label is manufactured using the aforementioned complete process. Its unfolded dimensions are 58mm × 25mm, and its thickness after folding is only 1.1mm. Its appearance and feel are no different from ordinary woven label body 1. It has a built-in 3×3mm Impinj M800 series RFID module 6. The antenna 5 uses silver paste printing + double-layer non-magnetic metal thread embroidery. The RFID module 6 is surrounded by a circle in the middle, and the two sides transition to a wave shape at the outer end. It covers the full frequency band of European and American standards and can withstand more than 200 high-alkaline drum washes at 90℃. The area of ​​the RFID module 6 is thickened with polyester layer 7 + honeycomb buffer local thickening. The bottom TC fabric layer 4 is slightly elastic in the weft direction. The fold position 3 on the back of the woven label body 1 is a V-shaped laser etching + elastic film memory structure. The top of the woven label body 1 and the label body 2 are ultrasonically gradient welded + glued double seal. It has the characteristics of self-healing spare wire of antenna 5, cavity drying, and local replacement along the weak seam of the dotted line of polyester layer 7. The following is the actual application process of its closed-loop management of 5,000 patient gowns in a tertiary hospital throughout their entire life cycle. It runs through the initialization of warehousing, issuance and binding, daily inventory, soiled linen collection, industrial washing, clean linen issuance, anomaly maintenance and data closure, fully demonstrating the comprehensive advantages of soft and concealed labels, stable reading, automation compatibility and resistance to extreme working conditions.

[0092] The hospital's laundry center receives patient gowns with pre-sewn labels from the garment factory. The label body 2 is automatically sewn onto the inner neckline of the woven label body 1 using double-sided PU adhesive and overlock stitching on the bottom of the TC fabric layer 4. After folding, the center fold 3 ensures that the two sides are flush and do not curl up, so patients do not feel any foreign body sensation when wearing them. Upon warehousing, a roll unpacking machine is used to directly load the gowns (50 labels / roll, protected with anti-static PE film and desiccant). Fixed four-antenna UHF channel readers (30dBm power) are used for batch initialization. Each RFID module 6 is written with a 96-bit unique EPC (encoding including department, bed number, and admission date) and an encrypted user area (name, blood type, and allergy history). Initialization of 5,000 gowns takes only 12 minutes with a 100% success rate and requires no manual intervention. When the nurses distribute the tags at the nurses' station, they use a handheld UHF reader to scan the patient's wristband and bring it within 0.5m of the main body of the woven label to automatically read the antenna signal. The system binds the patient's ID to the RFID module 6EPC in real time, and the screen displays the complete identity information. After confirming that everything is correct, the tag is distributed. The tag fits snugly against the skin of the neck, resulting in zero complaints about wearing it.

[0093] During routine ward rounds, nurses use a cart equipped with a directional antenna tablet to conduct batch inventory checks within a 2.5m range in the ward. The system automatically verifies the consistency between the person, clothing, and bed. The tags fold naturally with the collar after being folded in half. The TC fabric layer has a 4-weft micro-elasticity and a 3V-shaped memory structure at the center fold to ensure that the edges do not curl or fold. The antenna 5 has a wave-ring design for comprehensive reading without blind spots. When patients are transferred to other departments or discharged, they pass through a door-frame UHF channel, where the RFID module 6 dynamically captures their information, and the system records that "clothing follows the person," preventing cross-departmental confusion. During the soiled clothing recycling stage, patients change out of their hospital gowns and put them into the department's smart recycling bin. The UHF antenna inside the bin automatically identifies the tag body 2 and pushes it to the corresponding soiled clothing channel. When the laundry center receives the clothes, the channel reader counts the number of clothes in the bag, the department of origin, and the level of contamination. It automatically generates a differentiated washing formula (90℃ for heavy contamination and 60℃ for light contamination). The fluorinated surface of the polyester thickened layer 7 and the honeycomb buffer structure effectively resist the corrosion of blood stains, iodine, and disinfectant. The sealed cavity between the TC fabric layer 4 and the polyester thickened layer 7 keeps the interior dry.

[0094] Industrial washing utilizes a tunnel-type continuous washing machine, with 200 pieces per compartment. Before washing, the channel read rate is 100%, and a full inspection is performed again after washing. The system records the signal strength changes of each RFID module 6. After the 150th wash, batches with performance curves approaching the threshold receive an automatic warning and are prioritized for allocation to departments using low-frequency equipment. The woven label body 1 and tag body 2 are double-sealed with ultrasonic gradient welds and PU glue. The RFID module 6 is suspended by silicone blocks and encapsulated with epoxy resin to ensure zero displacement. Even if the main antenna 5 breaks, the spare conductor at the top of the wave section can self-heal through stress induction. After 200 extreme washes, the garments remain functional and the reading distance shows no attenuation. When clean clothes are removed from the warehouse, an automatic folding machine grabs the collar. The folded state of the tag body 2 does not affect the mechanical operation. Simultaneously, a "clean status" identifier is written to the RFID module 6 via a UHF conveyor belt reader. The garments are then packaged into intelligent clean lockers, where nurses scan the locker door QR code to collect them in batches. The system updates inventory in real time.

[0095] Maintenance is extremely convenient. If a very small number of antenna 5 main lines break, the spare wires will automatically connect to maintain the function. If a complete replacement is required, the maintenance personnel use a 60℃ hot air gun to tear off the old label body 2 along the preset dotted weak seam (thread strength only 60%) of the polyester thickened layer 7. The woven label body 1 is retained without disassembly. The new label body 2 is restored using the heat-sensitive PU adhesive at the bottom of the TC fabric layer 4, which is completed within 30 seconds. After scanning the QR code on the top of the epoxy resin of the old label, the new RFID module 6 inherits all the data with one click without reprogramming. The hospital HIS system connects in real time through the RFID middleware, automatically generating reports such as clothing turnover rate, loss rate, washing cost, and asset life. The clothing turnover cycle is shortened to less than 3 days, the loss rate is reduced from nearly 2% in traditional management to less than 0.2%, washing energy consumption is significantly reduced due to precise formula, and the label's concealment and softness are comparable to ordinary woven label body 1. Patients are unaware of the loss, and nursing efficiency is greatly improved. It truly realizes intelligent, error-free, and traceable closed-loop management of the entire chain from patient compliance with warehousing to recycling. Specific Implementation Example 5:

[0097] like Figures 1 to 4 As shown, to comprehensively verify the reliability of this tag under non-standard industrial washing and extreme environments, cyclic testing was conducted under the following three extreme conditions. The tag manufacturing process and structural parameters were the same as in Examples 1 to 3. The focus was on examining the durability of the woven label body 1, antenna 5, RFID module 6, ultrasonic weld, and polyester thickened layer 7. The test sample consisted of 100 mass-produced tags (batch number: WL-RFID-20251031), and the test environment was a constant temperature and humidity laboratory (23±2℃, RH50±5%).

[0098] (1) Petroleum dry cleaning cycle test (simulating high-end suit care):

[0099] Perform according to GB / T5717-2015: Soak the label in tetrachloroethylene solvent for 30 minutes with the suit, dry in a 140℃ drying oven for 15 minutes, and repeat 50 times.

[0100] Test Project Test methods / equipment initial value After 50 times Antenna 5 resistance change Vector Network Analyzer E5063A 3.8Ω 3.9Ω RFID module 6 reading distance Impinj Speedway R420 2.4m 2.4m Weld pull-out force Instron 336 (GB / T 3923.1) tensile testing machine 32N 30N Epoxy resin encapsulation bubble rate X-ray inspection system 0% 0% Tetraoxide residue GC-MS (Gas Mechanism for Gas Analysis) Not detected <0.1ppm

[0101] (2) High-temperature steam ironing cycle test (simulating the ironing of linens in a five-star hotel):

[0102] Simulate a hotel ironing production line: Place the label in a 200℃ steam iron (pressure 0.4MPa, steam jet 10 seconds / time, cooling 5 seconds) with the label folded in half, and repeat 100 times.

[0103] Test Project Test methods / equipment initial value After 100 times Color difference (ΔE) of woven label body 1 Datacolor 800 spectrophotometer 0.3 0.6 Ultrasonic weld depth Metallurgical microscope Olympus BX53 0.28mm 0.28mm RFID module 6 offset X-ray inspection system 0mm 0mm Antenna 5 read success rate Impinj Speedway (100 times / piece) 100% 100% Surface smoothness (warping) Keyence LJ-X8000 Laser Profilometer <0.1mm <0.1mm

[0104] (3) Liquid nitrogen cryogenic cold chain cycle test (simulating biological sample transportation):

[0105] Simulating extreme temperature differences in cold chain logistics: The label was immersed in liquid nitrogen at -196℃ for 30 seconds along with the sample bag and then immediately placed in a constant temperature chamber at 25℃ to recover, and the cycle was repeated 20 times.

[0106] Test Project Test methods / equipment initial value After 20 times Antenna 5 impedance Vector Network Analyzer E5063A 50Ω 51Ω RFID module 6 read rate Impinj Speedway R420 (27dBm) 100% 100% Cellular cavity collapse rate Hitachi SU8020 Scanning Electron Microscope 0% 0% Epoxy resin microcracks Staining and penetration method + stereomicroscopy Not detected Not detected 3-fold springback angle High-speed camera Phantom VEO 710 (1000fps) 178° 177°

[0107] The above three extreme working condition tests prove that this tag, through core technologies such as "printing-overlay composite antenna", "epoxy + silicone block double insurance encapsulation", "ultrasonic gradient welding + fluorinated separator", "honeycomb buffer + dotted weak seam", and "high temperature shaping + hydrophilic gradient coating", not only withstands 200 washes in conventional 90℃ high alkaline water, but is also seamlessly compatible with petroleum dry cleaning, high temperature steam ironing, and liquid nitrogen ultra-low temperature cold chain, with zero performance degradation and complete structure. It breaks through the technical bottleneck of existing RFID washing tags that are "only water-resistant" and has the ability to be applied across industries and working conditions.

[0108] All tests were conducted by a nationally qualified textile quality supervision and inspection agency, using equipment including a dry cleaning machine (calibrated and qualified), a steam ironing machine (calibrated and qualified), a liquid nitrogen temperature control system (calibrated and qualified), a UHF reader / writer (calibrated and qualified), and a tensile testing machine (calibrated and qualified).

[0109] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising a reference structure" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0110] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A folded woven label UHF RFID integrated industrial washing label, characterized in that, The material includes a woven label body (1), a tag body (2), a center fold (3), a TC fabric layer (4), an antenna (4), an RFID module (6), and a polyester thickened layer (7), characterized in that the manufacturing process steps are as follows: Sp1: High-density cationic yarn is selected and plasma de-haired. It is then woven on a multi-axial loom with a warp and weft density of 120×80 and a twill weave angle of 85° to form the base blank of the woven label body (1). After weaving, it is immersed in an alkali-resistant color-fixing agent solution and ultrasonically vibrated for 30 minutes. Then it is fixed in a 150°C high-temperature setting machine to form a flexible woven label body (1). Sp2: A laser etching machine is used to pre-set the center fold position (3) at a depth of 0.1mm on the back of the main body of the woven label (1) to form a repeatable fold crease; Sp3: Select a single-layer TC fabric with a cotton content of ≥60%, soften it by biological enzyme washing, spray a nano-level hydrophilic silicone oil layer in a vacuum spraying machine, and flatten and dry it in an 80°C roller calender to obtain the TC fabric layer (4). Sp4: Hot melt PU adhesive dot matrix is ​​pre-coated in the middle of the TC fabric layer (4). After the 0.5mm thick soft polyester fabric is activated by plasma surface, it is aligned and bonded by infrared positioning system. 2 bar pressure is applied and hot-pressed for 5 seconds to locally composite the polyester thickened layer (7). Sp5: A screen printing machine is used to print non-magnetic silver paste on the TC fabric layer (4) to form the primary pattern of antenna (5). After UV curing for 10 seconds, a CNC embroidery machine is used to double-layer embroider along the printing trajectory with imported non-magnetic metal thread. The embroidery spacing is ≤0.08mm. Sp6: Use a vacuum pickup arm to place the RFID module (6) in the middle area of ​​the antenna (5), apply conductive silver paste, then use pulsed laser micro-welding, pour low-temperature epoxy resin and vacuum degassing and curing. Sp7: Roller-coated double-sided PU adhesive between TC fabric layer (4) and polyester thickened layer (7), and sewed and fixed with a double-needle overlock sewing machine with a stitch distance of 2.5mm. Roller-coated double-sided PU adhesive at the bottom of TC fabric layer (4) and single-sided PU adhesive at the top of polyester thickened layer (7). Then the whole thing is kept warm in an 80℃ hot air circulating oven for 2 minutes to form the label body (2). Sp8: A thin layer of hot melt interface agent is pre-coated on the top back of the woven label body (1) and the top edge of the label body (2). The ultrasonic welding machine is used to scan and weld along the edge at 20kHz with a pulse width of 0.5 seconds / interval of 0.2 seconds. The weld depth is ≤0.3mm, forming an integrated structure.

2. The folded woven label UHF RFID integrated industrial washing label according to claim 1, characterized in that: The depilatory treatment of the cationic yarn in Sp1 is performed by radio frequency plasma at a frequency of 13.56MHz for 45 seconds. Before the main body of the woven label (1) is shaped, a 150℃ steam pre-shrinking treatment is added to improve the wrinkle resistance.

3. The folded woven label UHF RFID integrated industrial washing label according to claim 1, characterized in that: The TC fabric layer (4) in Sp3 is washed with bio-enzymes using a cellulase concentration of 0.5g / L and constant temperature oscillation at 55℃ for 90 minutes, followed by neutralization, rinsing, and vacuum dehumidification until the moisture content is ≤8%.

4. The folded woven label UHF RFID integrated industrial washing label according to claim 1, characterized in that: The hot melt PU adhesive matrix in Sp4 is sprayed with micro-dots with a grid spacing of 1.2mm. The polyester thickened layer (7) is preheated to 45°C by infrared radiation before bonding to improve the initial adhesion.

5. The folded woven label UHF RFID integrated industrial washing label according to claim 1, characterized in that: The non-magnetic silver paste printing in Sp5 uses a 280-mesh screen and a 30° squeegee angle. The overlapping metal wire is pre-coated with a 0.02mm thick insulating varnish layer to prevent short circuits.

6. The folded woven label UHF RFID integrated industrial washing label according to claim 1, characterized in that: The amount of conductive silver paste in the Sp6 was controlled at 0.03 mg. The laser micro-welding used parameters of wavelength 1064 nm, pulse energy 0.8 mJ, and frequency 50 kHz. The epoxy resin was cured under vacuum of -0.095 MPa for 15 minutes to remove bubbles.

7. The folded woven label UHF RFID integrated industrial washing label according to claim 1, characterized in that: The PU coating thickness in the Sp7 is controlled at 0.05mm, and the double-needle overlock sewing machine adopts a differential feeding mechanism with a sewing tension set at 0.8cN.

8. The folded woven label UHF RFID integrated industrial washing label according to claim 1, characterized in that: Before ultrasonic welding in Sp8, the welding edges are pre-cleaned with 40kHz ultrasonic to remove oil and dirt. After welding, cold air is used to quickly cool the temperature to below 35°C to prevent thermal deformation.

9. A folded woven label UHF RFID integrated industrial washing label according to claim 1, characterized in that: After the overall preparation is completed, the rolls are wound in 50 pieces per roll using a rolling machine. The rolls are sealed after each piece is verified by an RFID detection probe built into them to ensure a read rate of ≥99.9%.

10. A folded woven label UHF RFID integrated industrial washing label according to claim 1, characterized in that, The woven label body (1) has a folding point (3) in the middle of its back side, which allows it to be folded in half. The label body (2) is located at the top of the back side of the woven label body (1). The bottom layer of the label body (2) is a single-layer TC fabric layer (4). A polyester thickened layer (7) is added in the middle of the TC fabric layer (4). An RFID module (6) is installed in the overlapping position of the middle of the TC fabric layer (4) and the polyester thickened layer (7). The RFID module (6) is coupled to an antenna (5). The antenna (5) is circular in the middle, surrounding the RFID module (6) inside. The inner sides are rings, and the outermost end is wavy. The top edge of the back of the woven label body (1) and the top edge of the label body (2) are ultrasonically welded. The TC fabric layer (4) and the polyester thickened layer (7) are sewn together. At the same time, there is PU glue between the TC fabric layer (4) and the polyester thickened layer (7). The bottom of the TC fabric layer (4) is double-sided with PU glue, and the top of the polyester thickened layer (7) is single-sided with PU glue.

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