A process for producing an environmentally friendly label fabric without sizing treatment

Abstract

The present application belongs to the technical field of label fabric production, and discloses an environment-friendly label fabric production process without sizing treatment, comprising the following steps: S1: base material pretreatment and interface strengthening; S2: intelligent ink system development; S3: precise dynamic jet printing control; S4: energy gradient curing system; S5: function enhancement and cyclic regeneration. The present application removes fiber surface impurities and constructs a micro-nano level barrier structure, realizes the dynamic balance of ink penetration inhibition and base material flexibility under the condition of free sizing, and breaks through the dependence on chemical sizing of traditional processes; the intelligent ink system is designed in cooperation with nano-enhanced materials through a photo-thermal dual-response mechanism, and is endowed with self-adjusting curing characteristics and anti-deformation ability, which not only avoids the capillary diffusion defects of low-viscosity ink, but also eliminates the interface cracking risk caused by curing shrinkage. Dynamic jet printing control combined with real-time deformation compensation algorithm can accurately adapt to complex surfaces such as coarse lines and wrinkles, and significantly improve the pattern resolution and color uniformity.

Description

Technical Field

[0001] This invention belongs to the field of label fabric production technology, specifically a production process for environmentally friendly label fabrics that does not require sizing. Background Technology

[0002] Eco-labeled fabrics are textiles produced through eco-certification systems and sustainable technologies. Their core lies in the selection of raw materials, production processes, and the environmental friendliness of the final product. These fabrics typically use organic cotton, recycled polyester (such as recycled fibers from RPET plastic bottles), or bio-based fibers (such as lyocell and hemp), reducing resource consumption and chemical pollution at the source. Furthermore, they utilize technologies such as low-temperature dyeing, anhydrous dyeing, and electron beam cross-linking to reduce energy consumption and wastewater discharge.

[0003] Eco-friendly label fabrics undergo a no-sizing process during production, but still have many shortcomings. Specifically, the applicability of materials is limited. Cotton single yarns need to be tension mercerized to increase their strength before they can be made no-sizing, but this process is difficult to apply directly to unmodified conventional cotton fibers or blended single yarns. High-count, high-density or new synthetic fiber fabrics, due to their abundant yarn hairs and low crimp, still require traditional or environmentally friendly sizing agents to ensure weaving efficiency. This limits the application of sizing-free technology to some low- to mid-range fabrics. Insufficient mechanical properties and durability are another issue. While mesh fabrics using weave design to replace sizing avoid chemical sizing, their loose mesh structure makes them prone to yarn slippage during winding and lamination, requiring high-temperature fixation processes that may release harmful substances like formaldehyde. Denim desizing-free processes reduce wastewater discharge, but residual dyes from insufficient desizing can affect subsequent softening treatments, leading to stiff fabrics or reduced colorfastness. A trade-off exists between process stability and environmental friendliness. Some sizing-free technologies rely on alternative environmentally friendly sizing agents (such as polyacrylamide), but their desizing rate is still difficult to achieve 100%, and residual sizing can affect fabric breathability and increase post-processing energy consumption. While sizing-free digital printing on silk reduces chemical oxygen demand, the addition of waterproofing agents and softeners may alter fabric drape, and high-temperature steam fixation is required, limiting actual energy savings. Summary of the Invention

[0004] The purpose of this invention is to provide an environmentally friendly label fabric production process that does not require sizing, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a production process for environmentally friendly label fabrics that does not require sizing, comprising the following steps:

[0006] S1: Substrate pretreatment and interface strengthening;

[0007] S2: Development of intelligent ink systems;

[0008] S3: Precision dynamic inkjet printing control;

[0009] S4: Energy gradient solidification system;

[0010] S5: Enhanced Functionality and Recycling;

[0011] The substrate pretreatment and interface strengthening include multi-level bio-enzyme degreasing and activation and the construction of a nano-silicon-aluminum composite barrier layer; the intelligent ink system development includes biphasic resin base compounding and photothermal dual-response function integration; the precision dynamic inkjet control includes multi-modal inkjet parameter optimization and fabric deformation compensation algorithm; the energy gradient curing system includes multi-spectral photocuring coupling and electron beam topological crosslinking; and the functional strengthening and recycling include biomimetic hydrophobic interface construction and reversible adhesive recycling system.

[0012] As a further technical solution of the present invention, the multi-stage bio-enzyme degreasing and activation includes using a composite bio-enzyme treatment system to pretreat the cotton and linen blended substrate, preparing a compound solution of cellulase and pectinase with enzyme activities of 1200 U / g and 800 U / g, respectively, a treatment temperature of 45°C, a pH value of 5.5, a treatment time of 60 minutes, and using ultrasonic-assisted equipment to enhance the enzymatic hydrolysis efficiency and remove the wax layer and pectin on the fiber surface.

[0013] As a further technical solution of the present invention, the construction of the nano-silicon-aluminum composite barrier layer includes mixing modified nano-silica and boehmite at a mass ratio of 7:3 to prepare an aqueous dispersion with a particle size of 25±3nm and a solid content of 20%. The dispersion is then applied using a high-voltage electrostatic spraying device with a nozzle diameter of 0.25mm, a spraying pressure of 0.65MPa, a coating amount of 1.8g / m², and dried with hot air at 140℃ to form a dense barrier layer with a thickness of 0.9μm.

[0014] As a further technical solution of the present invention, the dual-phase resin base compounding includes a mixture of hyperbranched polyester acrylate and silicone-modified polyurethane in a mass ratio of 5:5. The former has a viscosity of 15 mPa·s, and the latter has a molecular weight of 2200 Da. 2% nano zinc oxide whiskers are added as reinforcing fillers with a specific surface area of ​​200 m² / g and a diameter of 20 nm. The mixture is stirred for 45 minutes using a planetary mixer at a vacuum of -0.09 MPa and a rotation speed of 1000 rpm. The final ink viscosity is controlled at 20 ± 1 mPa·s.

[0015] As a further technical solution of the present invention, the photothermal dual-response function integrates 0.5% near-infrared absorber copper indium sulfide quantum dots with a particle size of 3nm and an excitation wavelength of 808nm, combined with 1.2% thermosensitive microcapsules, and coated with phase change paraffin with a melting point of 42℃. This system generates a local thermal effect simultaneously during UV curing, promotes deep cross-linking, and compensates for curing shrinkage stress through thermal expansion effect.

[0016] As a further technical solution of the present invention, the multimodal printing parameter optimization includes selecting a Ricoh MH5420M printhead assembly, configuring a dual closed-loop feedback system, setting the droplet volume to 2.8 pL, the firing frequency to 55 kHz, the nozzle temperature to 25.5 ± 0.3 ℃, the printing height to 0.75 mm, integrating a high frame rate CCD vision system, calibrating the printing trajectory in real time at a rate of 50 frames / second, with a positioning error ≤ 15 μm and a linewidth fluctuation rate of ± 1.5%.

[0017] As a further technical solution of the present invention, the fabric deformation compensation algorithm includes developing a fabric surface topology modeling system based on deep learning, acquiring the three-dimensional shape of the fabric in real time through a laser triangulation instrument, dynamically adjusting the ink droplet point, implementing ink volume gradient compensation for coarse texture fabric, increasing the ink droplet coverage by 8% in the raised area and reducing the ink volume by 5% in the recessed area, and eliminating the color difference phenomenon caused by texture.

[0018] As a further technical solution of the present invention, the multi-band photocuring coupling includes a 385nm UV-LED array in the initial curing stage, with an irradiance of 3200mW / cm² and an exposure time of 35ms, achieving a surface crosslinking degree of 92%. In the deep curing stage, it switches to a 405nm excimer lamp with a pulse frequency of 250Hz, an energy density of 1200mJ / cm², and a penetration depth of ≥25μm. A near-infrared auxiliary module is added with a wavelength of 980nm and a power density of 50W / cm².

[0019] As a further technical solution of the present invention, the electron beam topological crosslinking includes using a 7.5MeV electron accelerator, a beam current of 15mA, a scanning speed of 2m / s, and applying an 18kGy dose to the edge region of the pattern to enhance crosslinking through a three-dimensional dose distribution algorithm, while the dose in the central region is 15kGy, forming a gradient network structure. After treatment, the ink layer hardness reaches 4H, the adhesion is 5B, and the bending resistance is ≥5000 times.

[0020] As a further technical solution of the present invention, the biomimetic hydrophobic interface construction includes the use of plasma-enhanced atomic layer deposition technology to sequentially deposit an alumina seed layer and a perfluorosiloxane functional layer on the surface of the ink layer at a deposition temperature of 110°C. The precursors are trimethylaluminum and perfluorooctyltriethoxysilane. The cycle number is 200 times to form a superhydrophobic film with a thickness of 80 nm, a contact angle ≥125°, and a wash resistance ≥10,000 times. The reversible adhesive recycling system includes the introduction of 2% dynamic covalent monomer dithioester, which forms a reversible cross-linked network under electron beam irradiation. During recycling, an 80°C thermal field treatment combined with immersion in a 0.1 mol / L vitamin C solution is used to achieve clean separation of the ink layer and the substrate. The substrate recovery rate is ≥95%, and the ink layer material reusability rate is ≥80%.

[0021] The beneficial effects of this invention are as follows:

[0022] 1. This invention systematically solves the core problems of high pollution, high energy consumption, and narrow applicability in the production of traditional environmentally friendly label fabrics by integrating a green design and intelligent technology throughout the entire process. The substrate pretreatment utilizes the synergistic effect of bio-enzymatic hydrolysis and nano-composite coating to efficiently remove impurities from the fiber surface and construct a micro-nano-level barrier structure. This achieves a dynamic balance between ink penetration inhibition and substrate flexibility under paste-free conditions, breaking through the dependence of traditional processes on chemical pastes. The intelligent ink system, through the synergistic design of a photothermal dual-response mechanism and nano-reinforcing materials, endows the ink with self-regulating curing characteristics and deformation resistance, avoiding the capillary diffusion defects of low-viscosity inks and eliminating the risk of interface cracking caused by curing shrinkage. Dynamic printing control combined with a real-time deformation compensation algorithm accurately adapts to complex surfaces such as rough textures and wrinkles, significantly improving pattern resolution and color uniformity.

[0023] 2. This invention employs a multi-spectral photocuring coupled electron beam topological crosslinking strategy. Through energy-level input and three-dimensional dose control, it achieves simultaneous enhanced crosslinking both inside and outside the ink layer, balancing surface abrasion resistance and deep adhesion, thus overcoming the depth limitations of traditional curing processes. The combination of a biomimetic hydrophobic interface and a reversible adhesive system not only forms a long-lasting protective barrier against moisture erosion and mechanical wear, but also achieves non-destructive separation of the substrate and ink layer through the controllable dissociation of dynamic bonds, constructing a complete "production-recycling-regeneration" lifecycle system. This technology deeply integrates high performance and sustainability, meeting the stringent requirements for weather resistance and flexibility in markings from fields such as medical devices and outdoor equipment, while reducing resource waste through material recycling. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall process of the present invention;

[0025] Figure 2 This is a schematic diagram of the substrate pretreatment and interface strengthening process of the present invention;

[0026] Figure 3 This is a schematic diagram of the development process of the intelligent ink system of the present invention;

[0027] Figure 4 This is a schematic diagram of the precision dynamic inkjet printing control process of the present invention;

[0028] Figure 5 This is a schematic diagram of the energy gradient solidification system of the present invention;

[0029] Figure 6 This is a schematic diagram of the process for enhancing and regenerating the function of the present invention. Detailed Implementation

[0030] 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.

[0031] like Figures 1 to 6 As shown in the embodiment of the present invention, a production process for an environmentally friendly label fabric that does not require sizing includes the following steps:

[0032] S1: Substrate pretreatment and interface strengthening;

[0033] S2: Development of intelligent ink systems;

[0034] S3: Precision dynamic inkjet printing control;

[0035] S4: Energy gradient solidification system;

[0036] S5: Enhanced Functionality and Recycling;

[0037] Substrate pretreatment and interface strengthening include multi-level bio-enzyme degreasing and activation and construction of nano-silicon-aluminum composite barrier layer; intelligent ink system development includes biphasic resin base compounding and photothermal dual-response function integration; precision dynamic inkjet control includes multi-modal inkjet parameter optimization and fabric deformation compensation algorithm; energy gradient curing system includes multi-spectral photocuring coupling and electron beam topological crosslinking; functional strengthening and recycling include biomimetic hydrophobic interface construction and reversible adhesive recycling system.

[0038] By reconstructing the surface properties of the substrate through bio-enzymatic hydrolysis and nanocomposite technology, a highly active interface and a dense barrier layer are formed under pulp-free treatment, breaking through the dependence of traditional processes on chemical pulps and eliminating wastewater pollution at the source. The intelligent ink system combines photothermal response mechanism to achieve self-regulating curing, precisely matching the permeability of different fibers and simultaneously inhibiting ink diffusion and shrinkage cracking. The dynamic inkjet printing algorithm compensates for fabric texture deformation in real time, and ensures high-definition reproduction of complex surface patterns through adaptive ink droplet distribution. Gradient energy curing integrates photothermal synergy and electron beam crosslinking to construct a three-dimensional stable ink layer structure, balancing deep curing efficiency and mechanical strength. Biomimetic hydrophobic interface and reversible bonding technology give the product long-term protection, while achieving efficient separation and recycling of the substrate and ink layer, forming a closed-loop regeneration system. The whole solution focuses on green manufacturing and intelligent control, solving the pain points of high pollution, frequent leakage, poor durability and difficult recycling in the production of environmentally friendly label fabrics.

[0039] like Figure 2As shown, the multi-stage bio-enzyme degreasing and activation process includes using a composite bio-enzyme treatment system to pretreat cotton-linen blended substrates, preparing a compound solution of cellulase and pectinase with enzyme activities of 1200 U / g and 800 U / g, respectively, at a treatment temperature of 45℃, a pH of 5.5, and a treatment time of 60 minutes. Ultrasonic assistance is used to enhance enzymatic hydrolysis efficiency, removing the wax layer and pectin from the fiber surface. The construction of the nano-silica-alumina composite barrier layer involves mixing modified nano-silica and boehmite at a mass ratio of 7:3 to prepare an aqueous dispersion with a particle size of 25±3 nm and a solid content of 20%. High-pressure electrostatic spraying equipment is used with a nozzle diameter of 0.25 mm, a spraying pressure of 0.65 MPa, and a coating amount of 1.8 g / m². After drying with hot air at 140℃, a dense barrier layer with a thickness of 0.9 μm is formed.

[0040] Through the synergistic effect of bio-enzymatic hydrolysis and nanocomposite coating, the surface properties of the substrate are optimized in a targeted manner and provided with long-lasting protection. Multi-stage bio-enzymatic treatment efficiently removes hydrophobic impurities from the fiber surface and constructs a highly active interface, significantly improving the wettability of the substrate and the bonding strength of subsequent coatings. The nanocomposite barrier layer, with its finely controlled microstructure and dense stacking characteristics, effectively seals the fiber gaps and blocks ink penetration channels, while maintaining the original breathability and flexibility of the fabric. These two elements work synergistically to form a dual physical and chemical protection mechanism, overcoming ink diffusion defects caused by insufficient substrate pretreatment in traditional paste-free processes, and avoiding environmental pollution caused by the use of chemical pastes. This composite technology provides a stable substrate for high-precision printing through a dynamic balance of surface activation and barrier reinforcement, ensuring the clarity and durability of patterns on complex textured fabrics.

[0041] like Figure 3 As shown, the biphase resin base compound consists of hyperbranched polyester acrylate and silicone-modified polyurethane in a 5:5 mass ratio. The former has a viscosity of 15 mPa·s, and the latter has a molecular weight of 2200 Da. 2% nano-zinc oxide whiskers are added as reinforcing fillers, with a specific surface area of ​​200 m² / g and a diameter of 20 nm. The mixture is stirred for 45 minutes using a planetary mixer at a vacuum of -0.09 MPa and a speed of 1000 rpm, resulting in a final ink viscosity controlled at 20 ± 1 mPa·s. The photothermal dual-response function integrates 0.5% copper indium sulfide quantum dots (3 nm particle size, 808 nm excitation wavelength) as a near-infrared absorber, combined with 1.2% thermosensitive microcapsules coated with phase change paraffin (melting point 42℃). This system simultaneously generates a localized thermal effect during UV curing, promoting deep cross-linking and compensating for curing shrinkage stress through thermal expansion.

[0042] By combining resin base compounding with photothermal response synergistic design, a smart ink system combining high-precision printing suitability and deep curing stability has been constructed. The two-phase resin base is mixed in a specific ratio to form an interpenetrating network structure. The low viscosity of the hyperbranched resin ensures smooth printing, while silicone-modified polyurethane provides a flexible framework. Nanoscale reinforcing materials enhance the mechanical strength and deformation resistance of the ink layer. The photothermal dual-response system utilizes the photothermal conversion effect of quantum dots to simultaneously trigger microcapsule phase transitions during curing, releasing heat energy and achieving self-driven deep cross-linking of the ink. Simultaneously, the thermal expansion effect offsets curing shrinkage stress, preventing microcrack formation. These two components synergistically overcome the bottlenecks of insufficient curing depth and weak interfacial adhesion in traditional UV inks, enabling the ink to form a dense and tough adhesion layer on a paste-free substrate, ensuring accurate shaping and long-term maintenance of high-resolution patterns on complex fabric surfaces.

[0043] like Figure 4 As shown, the multimodal printing parameter optimization includes selecting the Ricoh MH5420M printhead assembly, configuring a dual closed-loop feedback system, setting the ink droplet volume to 2.8 pL, the firing frequency to 55 kHz, the nozzle temperature to 25.5 ± 0.3 ℃, the printing height to 0.75 mm, integrating a high frame rate CCD vision system, calibrating the printing trajectory in real time at a rate of 50 frames / second, with a positioning error ≤ 15 μm and a linewidth fluctuation rate of ± 1.5%. The fabric deformation compensation algorithm includes developing a deep learning-based fabric surface topology modeling system, acquiring the three-dimensional shape of the fabric in real time through a laser triangulation instrument, dynamically adjusting the ink droplet landing point, implementing ink volume gradient compensation for coarse-textured fabrics, increasing the ink droplet coverage by 8% in raised areas, reducing the ink volume by 5% in recessed areas, and eliminating color difference phenomena caused by texture.

[0044] By employing intelligent inkjet control and dynamic compensation technology, high-precision pattern shaping is achieved on complex textured fabrics. Multimodal inkjet parameter optimization, combined with a high-sensitivity feedback system, precisely controls the jetting trajectory and landing point distribution of ultrafine droplets, ensuring ink layer uniformity under high-speed printing. A deep learning-driven deformation compensation algorithm analyzes the fabric surface topology in real time and adaptively adjusts inkjet parameters through an intelligent ink volume allocation strategy, eliminating ink diffusion or loss caused by fiber undulations. These two technologies work together to overcome the traditional inkjet process's reliance on flat substrates, achieving sub-micron level pattern reproduction on rough, wrinkled, and other irregularly shaped surfaces, significantly improving color gamut saturation and edge sharpness.

[0045] like Figure 5As shown, the multi-spectral photocuring coupling includes a 385nm UV-LED array in the initial curing stage, with an irradiance of 3200mW / cm² and an exposure time of 35ms, achieving 92% crosslinking of the surface layer. In the deep curing stage, it switches to a 405nm excimer lamp with a pulse frequency of 250Hz, an energy density of 1200mJ / cm², and a penetration depth ≥25μm. A near-infrared auxiliary module is added, with a wavelength of 980nm and a power density of 50W / cm². Electron beam topological crosslinking includes a 7.5MeV electron accelerator, a beam current of 15mA, and a scanning speed of 2m / s. A three-dimensional dose distribution algorithm is used to apply an 18kGy dose to the edge region of the pattern to enhance crosslinking, while the dose in the central region is 15kGy, forming a gradient network structure. After treatment, the ink layer hardness reaches 4H, adhesion is 5B, and the bending resistance is ≥5000 cycles.

[0046] By employing multi-spectral energy synergy and topological cross-linking technology, three-dimensional strengthening and performance breakthroughs in the ink layer structure are achieved. Multi-band photocuring utilizes a tiered energy input strategy: short-wavelength light sources rapidly lock onto the surface morphology to prevent leakage, while long-wavelength light sources penetrate the substrate to trigger deep cross-linking. Combined with near-infrared thermal effects, this promotes the orderly arrangement of molecular chains, resolving the contradiction between over-curing of the surface layer and under-curing of the underlying layer in traditional curing. Electron beam topological cross-linking, through intelligent dosage control, constructs a high-density cross-linked network at the pattern edges to enhance mechanical strength, while maintaining appropriate flexibility in the central region to prevent brittle fracture, forming a gradient structure that combines rigidity and flexibility. These two technologies synergistically eliminate curing shrinkage stress and interfacial microcracks, enabling the ink layer to maintain excellent adhesion and fatigue resistance even under complex deformation.

[0047] like Figure 6 As shown, the biomimetic hydrophobic interface construction involves using plasma-enhanced atomic layer deposition (PEALD) technology to sequentially deposit an alumina seed layer and a perfluorosiloxane functional layer on the ink layer surface at a deposition temperature of 110°C. The precursors are trimethylaluminum and perfluorooctyltriethoxysilane. After 200 cycles, a superhydrophobic film with a thickness of 80 nm is formed, with a contact angle ≥125° and a wash resistance ≥10,000 cycles. The reversible adhesive recycling system includes the introduction of 2% dynamic covalent monomer dithioester, which forms a reversible cross-linked network under electron beam irradiation. During recycling, an 80°C thermal field treatment combined with immersion in a 0.1 mol / L vitamin C solution is used to achieve clean separation of the ink layer and the substrate. The substrate recovery rate is ≥95%, and the ink layer material reusability rate is ≥80%.

[0048] Through biomimetic interface design and dynamic bonding technology, the label fabric is endowed with both long-lasting protection and recyclability. The biomimetic hydrophobic interface constructs a micro-nano structure using gradient composite film layers, forming a stable superhydrophobic barrier that effectively resists liquid penetration and mechanical abrasion, significantly improving the durability of the label in extreme environments. The reversible bonding system utilizes the stimulus-response characteristics of dynamic bonds to achieve gentle separation between the ink layer and the substrate, preserving the integrity of the substrate for easy reuse while enabling targeted recycling and regeneration of the ink layer material. These two technologies work together to overcome the resource waste bottleneck of traditional single-use labels, constructing a closed-loop system of "production-use-regeneration," reducing waste pollution while maintaining high product performance. This technology deeply integrates biomimetic principles with green chemistry, solving the balance between protection and recyclability in environmentally friendly labels.

[0049] 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 process for production of eco-friendly tag fabric with no sizing treatment, characterized in that: Comprising the following steps: S1: substrate pretreatment and interface strengthening; S2: intelligent ink system development; S3: precise dynamic jet printing control; S4: energy gradient curing system; S5: function enhancement and cyclic regeneration; The substrate pretreatment and interface strengthening includes multi-stage biological enzyme degreasing activation and nano-silicon aluminum composite barrier layer construction, the intelligent ink system development includes dual-phase resin base compound and light-heat dual-response function integration, the precise dynamic jet printing control includes multi-modal jet printing parameter optimization and fabric deformation compensation algorithm, the energy gradient curing system includes multi-spectral light curing coupling and electron beam topological crosslinking, and the function enhancement and cyclic regeneration includes biomimetic hydrophobic interface construction and reversible bonding cyclic system.

2. A process for production of a pulp free eco-friendly label fabric as claimed in claim 1, wherein: The multi-stage biological enzyme degreasing activation includes using a composite biological enzyme treatment system to pretreat a cotton and hemp blended substrate, configuring a cellulase and pectinase compound solution, the enzyme activity is 1200 U / g and 800 U / g respectively, the treatment temperature is 45°C, the pH value is 5.5, the treatment time is 60 minutes, and the enzyme hydrolysis efficiency is strengthened by an ultrasonic auxiliary device to remove the wax layer and pectin on the fiber surface.

3. A process for production of eco-friendly tag fabric without sizing as claimed in claim 1 wherein: The nano-silicon aluminum composite barrier layer construction includes mixing modified nano-silicon dioxide and boehmite at a mass ratio of 7:3, configuring an aqueous dispersion liquid with a particle size of 25±3 nm and a solid content of 20%, using a high-voltage electrostatic spraying device, a nozzle diameter of 0.25 mm, a spraying pressure of 0.65 MPa, a coating amount of 1.8 g / m², and drying by hot air at 140°C to form a dense barrier layer with a thickness of 0.9 μm.

4. A process for production of eco-friendly tag fabric without sizing as claimed in claim 1 wherein: The dual-phase resin base compound includes compounding super-branched polyester acrylate and silicone-modified polyurethane at a mass ratio of 5:5, the viscosity of the former is 15 mPa·s, the molecular weight of the latter is 2200 Da, 2% of nano-zinc oxide whiskers are added as reinforcing fillers, the specific surface area is 200 m² / g, and the diameter is 20 nm, a planetary mixer is used to mix under a vacuum degree of-0.09 MPa and a rotation speed of 1000 rpm for 45 minutes, and the final ink viscosity is controlled at 20±1 mPa·s.

5. A process for production of eco-friendly tag fabric without sizing as claimed in claim 1 wherein: The light-heat dual-response function integration introduces 0.5% of near-infrared absorber copper indium sulfide quantum dots with a particle size of 3 nm and an excitation wavelength of 808 nm, and cooperates with 1.2% of temperature-sensitive microcapsules coated with phase change paraffin with a melting point of 42°C, which synchronously generates a local thermal effect during UV curing to promote deep layer crosslinking and compensate for the curing shrinkage stress through thermal expansion effect.

6. A process for production of eco-friendly tag fabric without sizing as claimed in claim 1 wherein: The multi-modal jet printing parameter optimization includes selecting a Rikoh MH5420M nozzle group, configuring a double closed-loop feedback system, setting the ink droplet volume to 2.8 pL, the ignition frequency to 55 kHz, the nozzle temperature to 25.5±0.3°C, the jet printing height to 0.75 mm, integrating a high frame rate CCD vision system to calibrate the jet printing trajectory in real time at a rate of 50 frames / second, and the positioning error is ≤15 μm, and the line width fluctuation rate is ±1.5%.

7. A process for production of eco-friendly tag fabric without sizing as claimed in claim 1 wherein: The fabric deformation compensation algorithm includes developing a deep learning-based fabric surface topology modeling system, acquiring the three-dimensional morphology of the fabric in real time through a laser triangulation instrument, dynamically adjusting the inkjet drop point, implementing ink amount gradient compensation for coarse fabric, increasing the ink drop coverage by 8% in the raised area and reducing the ink amount by 5% in the recessed area, and eliminating the color difference phenomenon caused by texture.

8. A process for production of eco-friendly tag fabric without sizing as claimed in claim 1 wherein: The multi-spectral light curing coupling includes using a 385 nm UV-LED array in the initial curing stage, an irradiance of 3200 mW / cm², an exposure time of 35 ms, achieving a surface layer crosslinking degree of 92%, switching to a 405 nm excimer lamp in the deep curing stage, a pulse frequency of 250 Hz, an energy density of 1200 mJ / cm², a penetration depth of ≥25 μm, and adding a near-infrared auxiliary module with a wavelength of 980 nm and a power density of 50 W / cm².

9. A process for production of eco-friendly tag fabric without sizing as claimed in claim 1 wherein: The electron beam topology crosslinking includes using a 7.5 MeV electron accelerator with a beam current of 15 mA and a scanning speed of 2 m / s, applying a 18 kGy dose intensification crosslinking to the edge area of the pattern through a three-dimensional dose distribution algorithm, and a central area dose of 15 kGy to form a gradient network structure, the ink layer hardness after processing reaches 4H, the adhesion is 5B, and the bending resistance is ≥5000 times.

10. A process for production of eco-friendly tag fabric without sizing treatment as claimed in claim 1 wherein: The biomimetic hydrophobic interface construction includes using plasma-enhanced atomic layer deposition technology to sequentially deposit an aluminum oxide seed layer and a perfluorosiloxane functional layer on the ink layer surface, the deposition temperature is 110°C, the precursors are trimethylaluminum and perfluorooctyltriethoxysilane, the cycle number is 200 times, an ultra-hydrophobic film with a thickness of 80 nm is formed, the contact angle is ≥125°, and the wash resistance is ≥10000 times. The reversible bonding cycle system includes introducing 2% of a dynamic covalent bond monomer, bis-thioester, to form a reversible crosslinking network under electron beam irradiation, and using an 80°C hot field treatment combined with 0.1 mol / L vitamin C solution immersion to achieve clean separation of the ink layer and the substrate, the substrate recovery rate is ≥95%, and the ink layer material can be reused ≥80%.

Images