High-adhesion and permeation-resistant water-based ink for cigarette tipping paper and preparation method thereof

Abstract

The application discloses a special water-based ink for high-attachment and permeation-resistant tipping paper for cigarettes and a preparation method thereof. The water-based ink comprises a water-based resin, a pigment dispersion liquid, an additive and a two-component pre-water-absorption expansion-thermal collapse type polymer microemulsion system. The microemulsion system is composed of a low-temperature collapse component A and a high-temperature collapse component B. A multi-scale temporary plugging layer is formed in the printing wet film stage to inhibit deep penetration of the ink, a hierarchical air-permeable channel is formed by step-by-step collapse in the hot air drying stage, and a double-scale micro-pit anchoring structure is formed at the ink film / paper interface, so that the water-based ink has the properties of permeation resistance, high attachment and air permeability retention.

Description

Technical Field

[0001] This invention belongs to the field of printing ink technology for cigarettes, specifically relating to a water-based ink for cigarette tipping paper with high adhesion and impermeability, and its preparation method. Background Technology

[0002] As a crucial component of cigarette packaging, tipping paper's surface ink adhesion, anti-bleeding properties, and paper permeability stability directly impact the cigarette's appearance, smoking taste, and production suitability. Currently, commercially available water-based tipping paper inks still exhibit significant technical shortcomings in practical printing applications: traditional ink systems rely solely on a single resin film for coverage and adhesion. In the wet film state, the resin and pigment particles are small, easily penetrating deep into the paper matrix along the fiber gaps and capillaries. This not only causes bleeding and uneven coloring on the back of the paper, reducing printing uniformity, but also clogs the paper's internal pores, leading to a significant decrease in post-printing tipping paper permeability and poor batch stability.

[0003] Meanwhile, existing inks generally suffer from a contradiction between preventing seepage and maintaining air permeability: increasing the solid content to enhance seepage prevention easily leads to a dense, closed ink film and a severe reduction in air permeability; conversely, ensuring air permeability results in severe ink penetration, insufficient adhesion, and poor abrasion resistance. Furthermore, conventional inks, after drying, have a simple interface structure, resulting in weak anchoring between the paper and ink layer. Long-term storage easily leads to ink detachment and peeling, making them unsuitable for the large-scale production demands of high-speed gravure and flexographic printing processes. Therefore, developing a dedicated water-based ink that combines high adhesion, excellent seepage resistance, and stable maintenance of tipping paper air permeability is a pressing technical problem in this field. Summary of the Invention

[0004] To address the problems of existing cigarette tipping paper inks being prone to penetration, having poor adhesion, and being difficult to balance between seepage prevention and breathability, this invention provides a high-adhesion, penetration-resistant water-based ink for cigarette tipping paper and its preparation method. This ink balances seepage prevention, adhesion, and breathability, making it suitable for the needs of cigarette printing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A highly adhesive and resistant water-based ink for cigarette tipping paper, wherein the water-based ink is prepared from the following raw materials in parts by weight: The mixture consists of 30-50 parts of water-based resin emulsion, 8-25 parts of pigment dispersion, 3-12 parts of water-absorbing and swelling temperature-sensitive microsphere emulsion system, 0.3-2 parts of wetting and dispersing agent, 0.05-0.5 parts of defoamer, 0.1-0.8 parts of leveling agent, 0.5-4 parts of film-forming aid, 0.1-0.8 parts of pH adjuster, and 15-45 parts of deionized water. The water-absorbing and swelling temperature-sensitive microsphere emulsion system is composed of two water-absorbing and swelling temperature-sensitive microsphere emulsions: a low cross-linking density component A and a high cross-linking density component B. The dry basis mass ratio of component A to component B is 1:(0.5-2). The average particle size of component A in the pre-water-absorbing state is 200-300 nm, and the thermal collapse temperature is 75-85℃. The average particle size of component B in the pre-water-absorbing state is 300-450 nm, and the thermal collapse temperature is 90-100℃.

[0006] Preferably, by weight, component A is prepared from the following raw materials: 10-20 parts monomer, 0.2-1 parts crosslinking agent, 0.5-2 parts emulsifier, and 77-89.3 parts deionized water; component B is prepared from the following raw materials: 10-20 parts monomer, 1.2-3 parts crosslinking agent, 0.5-2 parts emulsifier, and 75-88.3 parts deionized water. The solid content of the temperature-sensitive microsphere emulsions obtained from components A and B is 15%-25%.

[0007] Preferably, the monomer is N-isopropylacrylamide; the crosslinking agent is methylenebisacrylamide; and the emulsifier is selected from one or more of sodium dodecyl sulfate, sodium dodecylbenzene sulfonate, and sodium fatty alcohol polyoxyethylene ether sulfate.

[0008] Preferably, the aqueous resin emulsion is selected from one or more of acrylic emulsion, polyurethane emulsion, and styrene-acrylic emulsion; the pigment dispersion is a slurry formed by pre-dispersing and grinding pigment, dispersant, and deionized water, wherein the pigment content is 30-50 wt%, and the pigment is selected from one or more of carbon black, titanium dioxide, phthalocyanine blue, and quinacridone red; the dispersant is selected from one or more of polycarboxylic acid dispersants, organosilicon dispersants, and sodium lignosulfonate.

[0009] Preferably, the wetting and dispersing agent is at least one of sodium polyacrylate and organosilicon polyether; the defoamer is at least one of polydimethylsiloxane and mineral oil defoamer; the leveling agent is at least one of polyether-modified organosilicon and polyoxypropylene ether; the film-forming aid is at least one of propylene glycol methyl ether acetate and ethylene glycol monobutyl ether; and the pH adjuster is at least one of ammonia, triethanolamine, and dimethylethanolamine.

[0010] Preferably, the preparation method of the high-adhesion and penetration-resistant water-based ink for cigarette tipping paper includes the following steps: S1. Weigh the aqueous resin emulsion and part of the deionized water according to the ratio, put them into the dispersion vessel, and stir at low speed for 5-10 minutes at room temperature and 200-400 r / min until the system is uniform and transparent to obtain a stable resin base liquid. S2. While maintaining a low stirring speed of 200-400 r / min, slowly add the pigment dispersion, wetting and dispersing agent, defoamer, leveling agent, pH adjuster and film-forming aid to the resin base liquid in sequence. After the addition is completed, increase the speed to 800-1200 r / min and disperse at high speed for 15-25 min to fully grind and wet, so as to obtain a fine, uniform, and particle-free water-based pigment paste. S3. Adjust the dispersion speed to 300-500 r / min for low-speed homogenization. Slowly and uniformly add the water-absorbing and swelling temperature-sensitive microsphere emulsion system to the color paste. After the addition is complete, continue stirring at room temperature for 8-12 min to ensure that the microspheres are completely dispersed and do not break the emulsion or thermal collapse. S4. Filtration and discharge: Pressure filtration or gravity filtration is performed using a 200-300 mesh filter to remove trace large particulate impurities and produce a high-adhesion and penetration-resistant water-based ink for cigarette tipping paper.

[0011] Preferably, the ink coating has a cross-cut adhesion of ≥93%, a back-side bleeding grade of ≤1, and a splicing paper air permeability retention rate of 70%-92%.

[0012] Due to the adoption of the above technical solution, the beneficial effects of the present invention are: the ink of the present invention can effectively inhibit the penetration of pigments and resins into the paper base, eliminate the problem of back-side bleeding, and at the same time, the microporous structure formed by gradient thermal collapse can stably retain the air permeability of the tipping paper, the ink coating has excellent adhesion, and the overall comprehensive performance is good, making it suitable for gravure and flexographic printing production processes of cigarette tipping paper. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0014] Example 1: This Example 1 describes a high-adhesion, penetration-resistant water-based ink for cigarette tipping paper. The water-based ink is prepared from the following raw materials in parts by weight: 40 parts of waterborne resin emulsion (styrene-acrylic emulsion), 15 parts of pigment dispersion (titanium dioxide pigment dispersion), 7 parts of water-absorbing and swelling temperature-sensitive microsphere emulsion system, 1 part of wetting and dispersing agent (sodium polyacrylate), 0.2 parts of defoamer (polydimethylsiloxane), 0.4 parts of leveling agent (polyether-modified silicone), 2 parts of film-forming aid (propylene glycol methyl ether acetate), 0.4 parts of pH adjuster (triethanolamine), and 25 parts of deionized water; The preparation method of the water-absorbing and swelling temperature-sensitive microsphere emulsion system is as follows: S1. Add 0.5 parts sodium dodecyl sulfate and 89.3 parts deionized water to a reactor, stir to dissolve, purge with nitrogen for 30 min to remove oxygen, add 10 parts N-isopropylacrylamide and 0.2 parts methylenebisacrylamide, heat to 70℃, initiate polymerization reaction for 4 h, cool to room temperature after reaction to obtain component A microsphere emulsion with low crosslinking, small particle size (250 nm), and low temperature collapse (80℃), with a solid content of 20.1%; S2. Add 0.5 parts sodium dodecyl sulfate and 88.3 parts deionized water to the reactor, stir to dissolve, purge with nitrogen for 30 min to remove oxygen, add 10 parts N-isopropylacrylamide and 1.2 parts methylenebisacrylamide, heat to 70℃, initiate polymerization reaction for 4 h, cool to room temperature after reaction to obtain component B microsphere emulsion with high crosslinking, large particle size (370 nm), and high temperature collapse (95℃), with a solid content of 20.3%; S3. Weigh out equal masses of component A and component B emulsions and put them into a stirring device. Stir at a low speed of 300 r / min for 6 min at room temperature until they are mixed evenly to obtain a water-absorbing and swelling temperature-sensitive microsphere emulsion system. At this time, the dry basis mass ratio is 1:1.

[0015] The preparation method of the pigment dispersion is as follows: S1. Add 57 parts of deionized water and 3 parts of sodium polyacrylate to a sand mill and stir at room temperature and 450 r / min for 9 min until completely dissolved. S2. Add 40 parts of titanium dioxide pigment, stir at a low speed of 450 r / min for 10 min to fully wet the material, then increase the speed to 1500 r / min to grind and disperse for 40 min. After the pigment particle size is qualified, a titanium dioxide pigment dispersion with a pigment content of 40 wt% is obtained and sealed for later use.

[0016] This embodiment describes a method for preparing a high-adhesion, penetration-resistant water-based ink for cigarette tipping paper. The specific preparation steps are as follows: S1. Add styrene-acrylic emulsion and deionized water into a dispersion vessel, stir at room temperature and 300 r / min for 8 min to obtain a uniform resin base liquid; S2. While stirring at 300 r / min, add pigment dispersion, sodium polyacrylate, polydimethylsiloxane, polyether-modified organosilicon, triethanolamine, and propylene glycol methyl ether acetate in sequence; after the addition is complete, adjust to 900 r / min and disperse for 20 min to obtain water-based color paste; S3. Adjust the rotation speed to 400r / min, slowly add the water-absorbing and swelling temperature-sensitive microsphere emulsion system, and stir at room temperature for 10min after the addition is complete. S4. A water-based ink for cigarette tipping paper is produced by filtering with a 250-mesh filter.

[0017] Example 2: This Example 2 describes a high-adhesion, penetration-resistant water-based ink for cigarette tipping paper. The water-based ink is prepared from the following raw materials in parts by weight: The mixture contains 30 parts of waterborne resin emulsion (styrene-acrylic emulsion), 8 parts of pigment dispersion (titanium dioxide pigment dispersion), 3 parts of water-absorbing and swelling temperature-sensitive microsphere emulsion system, 0.3 parts of wetting and dispersing agent (sodium polyacrylate), 0.05 parts of defoamer (polydimethylsiloxane), 0.1 parts of leveling agent (polyether-modified silicone), 0.5 parts of film-forming aid (propylene glycol methyl ether acetate), 0.1 parts of pH adjuster (triethanolamine), and 15 parts of deionized water. The preparation method of the pigment dispersion and the water-absorbing and swelling temperature-sensitive microsphere emulsion system in Example 2 is the same as that in Example 1; The preparation method of the high-adhesion, penetration-resistant water-based ink for cigarette tipping paper in Example 2 is the same as that in Example 1.

[0018] Example 3: This Example 3 describes a high-adhesion, penetration-resistant water-based ink for cigarette tipping paper. The water-based ink is prepared from the following raw materials in parts by weight: The mixture contains 50 parts of waterborne resin emulsion (styrene-acrylic emulsion), 25 parts of pigment dispersion (titanium dioxide pigment dispersion), 12 parts of water-absorbing and swelling temperature-sensitive microsphere emulsion system, 2 parts of wetting and dispersing agent (sodium polyacrylate), 0.5 parts of defoamer (polydimethylsiloxane), 0.8 parts of leveling agent (polyether-modified silicone), 4 parts of film-forming aid (propylene glycol methyl ether acetate), 0.8 parts of pH adjuster (triethanolamine), and 45 parts of deionized water. The preparation method of the pigment dispersion and the water-absorbing and swelling temperature-sensitive microsphere emulsion system in Example 3 is the same as that in Example 1; The preparation method of the high-adhesion, penetration-resistant water-based ink for cigarette tipping paper in Example 3 is the same as that in Example 1.

[0019] Comparative Example 1: The water-based ink of Comparative Example 1 was prepared from the following raw materials in parts by weight: 40 parts of waterborne resin emulsion (styrene-acrylic emulsion), 15 parts of pigment dispersion (titanium dioxide pigment dispersion), 1 part of wetting and dispersing agent (sodium polyacrylate), 0.2 parts of defoamer (polydimethylsiloxane), 0.4 parts of leveling agent (polyether-modified silicone), 2 parts of film-forming aid (propylene glycol methyl ether acetate), 0.4 parts of pH adjuster (triethanolamine), and 25 parts of deionized water; The preparation method of the pigment dispersion in Comparative Example 1 is the same as that in Example 1; The preparation method of the water-based ink in Comparative Example 1 is the same as that in Example 1, except that the water-absorbing and swelling temperature-sensitive microsphere emulsion system is not added.

[0020] Comparative Example 2: The water-based ink of Comparative Example 2 was prepared from the following parts by weight of raw materials: 40 parts of waterborne resin emulsion (styrene-acrylic emulsion), 15 parts of pigment dispersion (titanium dioxide pigment dispersion), 7 parts of low cross-linked density temperature-sensitive microsphere emulsion, 1 part of wetting and dispersing agent (sodium polyacrylate), 0.2 parts of defoamer (polydimethylsiloxane), 0.4 parts of leveling agent (polyether-modified silicone), 2 parts of film-forming aid (propylene glycol methyl ether acetate), 0.4 parts of pH adjuster (triethanolamine), and 25 parts of deionized water; The preparation methods of the pigment dispersion and the low cross-linking density temperature-sensitive microsphere emulsion in Comparative Example 2 are the same as those in Example 1; The preparation method of the water-based ink in Comparative Example 2 is the same as that in Example 1, except that component A, low cross-linking density temperature-sensitive microsphere emulsion, is used and component B is not added.

[0021] Performance testing 1. Coating adhesion across grid lines The coating adhesion test was conducted according to GB / T 9286-2021: The ink to be tested was uniformly printed on cigarette tipping paper and conditioned for 24 hours at a temperature of 23±2℃ and a relative humidity of 50±5%. A 1mm spacing cross-cutting tool was used to cut perpendicularly to the substrate, forming a 5×5 grid with 6 cuts horizontally and 6 cuts vertically. Debris was removed by gently brushing along the diagonal with a soft brush. A standard pressure-sensitive tape with an adhesion strength of 600g / 25mm was flatly applied to the grid area. After degassing with a 500g pressure roller, the tape was quickly peeled off at a speed of about 10mm / s along a 90° direction. The coating peeling within the grid was observed, and the adhesion level was evaluated according to the standard (level 0 is the best, level 5 is the worst).

[0022] Table 1. Cross-cut adhesion test data for different sample coatings

[0023] The sample ink coating in the example exhibits excellent adhesion, with a strong bond between the coating and the tipping paper and an extremely low peeling rate. In contrast, the comparative sample lacks the support of the microsphere composite structure, resulting in weak interfacial anchoring of the coating and a significant decrease in adhesion. This demonstrates that the two-component thermosensitive microsphere composite system of this invention can effectively improve the adhesion stability of the ink coating.

[0024] 2. Backside color bleeding grade Each ink sample to be tested was evenly printed on the surface of cigarette tipping paper and placed in an environment with a temperature of 23±2℃ and a relative humidity of 50±5% to air dry for 24 hours. The bleeding, color bleeding, and bleed-through on the back of the paper were visually observed under natural light. The bleeding grade was evaluated according to the grading standard of the cigarette printing ink industry. The lower the grade, the better the bleeding resistance.

[0025] Table 2 Test data of back staining grade of different samples

[0026] The ink in this invention has excellent anti-permeation ability, which can effectively prevent ink pigments from diffusing and penetrating into the paper base, resulting in a clean and transparent printing back side. Single-component microspheres and microsphere-free systems cannot form a gradient barrier structure, and the anti-permeation effect is greatly weakened, resulting in obvious bleeding defects. This verifies the role of two-component compound microspheres in improving the ink's anti-permeation performance.

[0027] 3. Air permeability retention rate of splicing paper This test was conducted under a standard constant temperature and humidity environment of 23±2℃ and 50±5% relative humidity. First, the air permeability of unprinted blank cigarette tipping paper was tested using a cigarette air permeability tester, and the basic air permeability value of the base paper was recorded. Then, each group of ink samples was evenly printed on the surface of the same type of cigarette tipping paper. After drying for 24 hours under constant temperature and humidity conditions, the air permeability of the printed tipping paper was tested using the same instrument and parameters. The effect of each group of inks on the air permeability performance of cigarette tipping paper was evaluated by calculating the air permeability retention rate = air permeability after printing / air permeability of blank base paper × 100%.

[0028] Table 3. Test data on air permeability retention rate of tipping paper for different samples

[0029] This invention constructs a gradient microporous structure using two-component temperature-sensitive microspheres, enabling the ink to effectively prevent seepage while maximizing the preservation of the air permeability of the tipping paper. The air permeability retention rate is much higher than that of the comparative example. Conventional inks and single-component microsphere inks tend to block the pores of the paper base, making it impossible to achieve a balance between seepage prevention and air permeability, and thus failing to meet the usage requirements of cigarette tipping paper.

[0030] 4. Ink film uniformity Each ink sample was uniformly coated and printed onto the surface of cigarette tipping paper using the same process. The samples were then dried in a constant temperature and humidity environment of 23±2℃ and 50±5% for 24 hours. After the ink layer was completely cured, the smoothness and consistency of each group of ink layers were observed by visual inspection combined with magnification. Defects such as pinholes, streaks, particle agglomeration, uneven thickness, mottling, and local exposure of the substrate were checked. The film uniformity and coating appearance of each group of inks were comprehensively evaluated.

[0031] Table 4. Test data on the uniformity of ink film formation for different samples

[0032] The ink film formed in the embodiments of the present invention is smooth and uniform with very few surface defects and excellent coating consistency. The comparative ink system has poor dispersion stability and leveling properties, and is prone to problems such as uneven thickness, pinholes and particles after film formation. This shows that the two-component compound microspheres can significantly improve the rheological and film-forming properties of ink and improve the appearance quality of printing.

[0033] 5. Friction resistance Under constant temperature and humidity conditions of 23±2℃ and 50±5% relative humidity, each group of ink samples was printed on the surface of cigarette tipping paper using the same process and left for 24 hours until the ink layer was completely dry and cured. A friction tester was used to conduct a dry friction test with standard friction paper as the friction medium, a load of 20N±0.2N, and 40 reciprocating friction strokes. After the test, the wear, exposure, peeling, and color fading of the ink layer surface were observed, and the degree of staining on the friction paper was evaluated. The friction resistance of each group of ink coatings was comprehensively compared and evaluated.

[0034] Table 5. Test data of abrasion resistance of different samples

[0035] The compound microsphere system of this invention can effectively enhance the density and mechanical strength of the ink layer structure. The ink in the example has excellent abrasion resistance and no color fading or exposure of the base after friction. The ink coating structure of inks without microsphere reinforcement system and single-component microsphere system is not strong enough, and they are easily worn and faded by friction. Their abrasion resistance cannot meet the standards for use in tobacco printing.

[0036] 6. Printing process adaptability This test was conducted at room temperature in the cigarette tipping paper production workshop. First, the inks to be tested were stirred at 300 r / min for 10 min, and then pretreated by filtering through a 250 mesh filter. Subsequently, a dedicated gravure printing machine was used, with the printing speed set at 120 m / min, the doctor blade pressure at 0.3 MPa, and the drying temperature at 130℃. The machine was continuously printed for 2 hours. Throughout the process, the ink fluidity, leveling properties, drying rate, and operational stability were observed. Problems such as screen clogging, ink splatter, ink accumulation, fuzzing, and registration deviation were checked to comprehensively evaluate the ink's adaptability for large-scale printing.

[0037] Table 6. Test data on the compatibility of different sample printing processes

[0038] The ink prepared by this invention has stable rheological properties, strong adaptability to continuous printing, and its leveling and drying properties are matched with large-scale gravure printing processes, resulting in fewer production defects. In contrast, the comparative ink has poor rheological stability, is prone to problems such as screen clogging, ink accumulation, and ink splatter when printed, has weak continuous production capacity, and is not suitable for industrial-scale mass printing production.

Claims

1. A water-based ink for cigarette tipping paper with high adhesion and impermeability, characterized in that, The water-based ink is prepared from the following raw materials in parts by weight: The mixture consists of 30-50 parts of water-based resin emulsion, 8-25 parts of pigment dispersion, 3-12 parts of water-absorbing and swelling temperature-sensitive microsphere emulsion system, 0.3-2 parts of wetting and dispersing agent, 0.05-0.5 parts of defoamer, 0.1-0.8 parts of leveling agent, 0.5-4 parts of film-forming aid, 0.1-0.8 parts of pH adjuster, and 15-45 parts of deionized water. The water-absorbing and swelling temperature-sensitive microsphere emulsion system is composed of two water-absorbing and swelling temperature-sensitive microsphere emulsions: a low cross-linking density component A and a high cross-linking density component B. The dry basis mass ratio of component A to component B is 1:(0.5-2). The average particle size of component A in the pre-water-absorbing state is 200-300 nm, and the thermal collapse temperature is 75-85℃. The average particle size of component B in the pre-water-absorbing state is 300-450 nm, and the thermal collapse temperature is 90-100℃.

2. The water-based ink for cigarette tipping paper with high adhesion and impermeability according to claim 1, characterized in that, By weight, component A is prepared from the following raw materials: 10-20 parts monomer, 0.2-1 parts crosslinking agent, 0.5-2 parts emulsifier, and 77-89.3 parts deionized water; component B is prepared from the following raw materials: 10-20 parts monomer, 1.2-3 parts crosslinking agent, 0.5-2 parts emulsifier, and 75-88.3 parts deionized water. The solid content of the temperature-sensitive microsphere emulsions prepared from components A and B is 15%-25%.

3. A water-based ink for cigarette tipping paper with high adhesion and impermeability according to any one of claims 1-2, characterized in that, The monomer is N-isopropylacrylamide; the crosslinking agent is methylenebisacrylamide; and the emulsifier is selected from one or more of sodium dodecyl sulfate, sodium dodecylbenzene sulfonate, and sodium fatty alcohol polyoxyethylene ether sulfate.

4. The water-based ink for cigarette tipping paper with high adhesion and impermeability according to claim 1, characterized in that, The aqueous resin emulsion is selected from one or more of acrylic emulsion, polyurethane emulsion, and styrene-acrylic emulsion; the pigment dispersion is a slurry formed by pre-dispersing and grinding pigments, dispersants, and deionized water, wherein the pigment content is 30-50 wt%, and the pigment is selected from one or more of carbon black, titanium dioxide, phthalocyanine blue, and quinacridone red; the dispersant is selected from one or more of polycarboxylic acid dispersants, organosilicon dispersants, and sodium lignosulfonate.

5. The water-based ink for cigarette tipping paper with high adhesion and impermeability according to claim 1, characterized in that, The wetting and dispersing agent is at least one of sodium polyacrylate and organosilicon polyether; the defoamer is at least one of polydimethylsiloxane and mineral oil defoamer; the leveling agent is at least one of polyether-modified organosilicon and polyoxypropylene ether; the film-forming aid is at least one of propylene glycol methyl ether acetate and ethylene glycol monobutyl ether; and the pH adjuster is at least one of ammonia, triethanolamine, and dimethylethanolamine.

6. A method for preparing a high-adhesion, penetration-resistant water-based ink for cigarette tipping paper according to any one of claims 1-5, characterized in that, Includes the following steps: S1. Weigh the aqueous resin emulsion and part of the deionized water according to the ratio, put them into the dispersion vessel, and stir at low speed for 5-10 minutes at room temperature and 200-400 r / min until the system is uniform and transparent to obtain a stable resin base liquid. S2. While maintaining a low stirring speed of 200-400 r / min, slowly add the pigment dispersion, wetting and dispersing agent, defoamer, leveling agent, pH adjuster and film-forming aid to the resin base liquid in sequence. After the addition is completed, increase the speed to 800-1200 r / min and disperse at high speed for 15-25 min to fully grind and wet, so as to obtain a fine, uniform, and particle-free water-based pigment paste. S3. Adjust the dispersion speed to 300-500 r / min for low-speed homogenization. Slowly and uniformly add the water-absorbing and swelling temperature-sensitive microsphere emulsion system to the color paste. After the addition is complete, continue stirring at room temperature for 8-12 min to ensure that the microspheres are completely dispersed and do not break the emulsion or thermal collapse. S4. Filtration and discharge: Pressure filtration or gravity filtration is performed using a 200-300 mesh filter to remove trace large particulate impurities and produce a high-adhesion and penetration-resistant water-based ink for cigarette tipping paper.

7. The high-adhesion, penetration-resistant water-based ink for cigarette tipping paper according to any one of claims 1-5, characterized in that, The ink coating has a cross-cut adhesion of ≥93%, a back-side bleeding grade of ≤1, and a splicing paper air permeability retention rate of 70%-92%.

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