Water-based adhesive for cigarettes, and preparation method therefor

Abstract

The present invention particularly relates to the field of adhesion of tobacco products. Disclosed are a water-based adhesive for cigarettes, and a preparation method therefor. By adding sodium fluorescein to the adhesive, the adhesive emits bright green fluorescence under ultraviolet light, and the quality detection during production process and anti-counterfeiting function are realized. In addition, sodium bicarbonate and citric acid react to generate carbon dioxide bubbles, thereby enhancing the visualization and controllability of the adhesion process. By means of the improvements, the present invention effectively solves the problems of difficult quality control and poor user experience in the prior art, improves the performance and the application effect of the adhesive, and satisfies the requirements of the modern tobacco industry for efficient, safe and multifunctional adhesives.

Description

A water-based adhesive for tobacco and its preparation method Technical Field

[0001] This invention relates to the field of adhesive technology for tobacco products, and more specifically, to a water-based adhesive for tobacco products and its preparation method. Background Technology

[0002] Currently, most water-based adhesives for cigarettes on the market are prepared by mixing high-molecular polymers such as chitosan, polyethylene glycol, and glycerin. The main function of these adhesives is to provide excellent bonding performance and durability, ensuring that cigarettes maintain a stable bonding effect during production, storage, and use. Traditional adhesive formulations focus on bonding strength, heat resistance, and water resistance. The natural antibacterial properties of chitosan and the moisturizing properties of polyethylene glycol are used to further improve the overall performance of the adhesive. In addition, the addition of nanomaterials such as silver nanoparticles and silica nanoparticles enhances the mechanical strength and antibacterial ability of the adhesive. However, these conventional adhesives still have some unavoidable defects in practical applications.

[0003] While existing water-based adhesives for tobacco products offer basic bonding and protection, they lack improvements in quality control and user experience in practical use. Firstly, the lack of fluorescent properties makes effective quality control during production difficult, hindering the rapid identification of uneven or missed coatings and leading to higher defect rates. Secondly, the absence of bubble-reducing properties results in poor visualization and control during the bonding process, preventing users from visually observing changes and potentially affecting operational accuracy and final bonding results. In summary, existing water-based adhesives for tobacco products have significant shortcomings in anti-counterfeiting, quality control, and user experience, necessitating an improved adhesive formulation to overcome these deficiencies. Summary of the Invention

[0004] To overcome the aforementioned deficiencies of the prior art, embodiments of the present invention provide a water-based adhesive for tobacco and its preparation method, which achieves fluorescence by adding sodium fluorescein and uses sodium bicarbonate and citric acid to generate bubbles, thereby improving quality control and user experience and solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a water-based adhesive for tobacco products, wherein the adhesive comprises the following components by weight percentage:

[0006] Chitosan: 8-10%, used to provide basic adhesive and antibacterial properties; degree of deacetylation higher than 85%, used to improve solubility and adhesion.

[0007] Glycerin: 3-5%, as a moisturizing ingredient;

[0008] Polyethylene glycol: 4-6%, used to enhance moisturizing effects;

[0009] Sodium fluorescein: 0.2-0.4%, emits fluorescence under ultraviolet light, used for quality detection and tracking during production and use;

[0010] Sodium bicarbonate: 1-2.5%, sodium bicarbonate reacts with citric acid to produce carbon dioxide bubbles;

[0011] Citric acid: 1-1.5%, used as a foaming agent and environmentally friendly crosslinking agent;

[0012] Silica nanoparticles: 0.5-1%, with a particle size of 10-50 nanometers;

[0013] Silver nanoparticles: 0.05-0.1%, particle size 1-10 nanometers;

[0014] Xanthan gum: 0.2-0.4%, xanthan gum is used to increase viscosity;

[0015] Guar gum: 0.2-0.4%, guar gum is used to enhance the water resistance and flexibility of adhesives;

[0016] Epoxidized soybean oil: 1-1.5%, used as a crosslinking agent to improve adhesion strength;

[0017] The remaining portion is deionized water.

[0018] In a preferred embodiment, the sodium fluorescein emits bright green fluorescence under ultraviolet light irradiation for quality control and anti-counterfeiting detection. The concentration of sodium fluorescein is 0.2-0.4%, and the sodium fluorescein is added gradually and thoroughly mixed during the later stages of adhesive preparation.

[0019] In a preferred embodiment, the reaction of sodium bicarbonate and citric acid provides an immediate bubbling effect, with the ratio of sodium bicarbonate to citric acid being 1.5-2.5% and 1-1.5%, respectively, to ensure that sufficient carbon dioxide bubbles are generated during the reaction.

[0020] In a preferred embodiment, the fluorescent agent is used as a temperature indicator, exhibiting different fluorescence intensities or color changes at different temperatures;

[0021] In a preferred embodiment, 2-4% allantoin is added to the adhesive, which works in conjunction with glycerin and polyethylene glycol to improve flexibility and long-term adhesion by forming a multi-layered moisturizing barrier; 0.5-1% vitamin E and nano-silver are added to form an antioxidant and antibacterial system.

[0022] In a preferred embodiment, 0.1-0.3% of graphene nanosheets are mixed with silica nanoparticles to construct a three-dimensional conductive network structure, and chitin is combined to enhance adhesion; sodium fluorescein and allantoin are dissolved in deionized water and stirred under low temperature conditions to ensure uniform distribution and stabilize sodium fluorescein, which is used to provide anti-counterfeiting and quality control effects.

[0023] In a preferred embodiment, 0.01-0.05% menthol is introduced and its release is controlled by microencapsulation technology, allowing it to gradually release a refreshing scent during use and in conjunction with a fluorescence effect; 0.1-0.2% phase change material is added; 0.5-1% carbon nanotubes are introduced; 1-2% ultrafine ferrite particles are used to give the adhesive magnetic responsive properties; and 0.3-0.5% ultraviolet absorber is added.

[0024] In a preferred embodiment, a method for preparing a water-based adhesive for tobacco includes the following steps:

[0025] S1: Dissolve chitin in a 2% acetic acid solution to form a homogeneous chitin solution; this step is carried out at a temperature of 50-60 degrees Celsius to ensure complete dissolution of chitin;

[0026] S2: Add glycerin and polyethylene glycol to the chitosan solution and stir until homogeneous to form a composite moisturizing solution. The order of adding glycerin and polyethylene glycol is to add glycerin first, then polyethylene glycol. Stir for 10-15 minutes after each addition to ensure thorough mixing.

[0027] S3: Disperse silica nanoparticles and silver nanoparticles in deionized water and ultrasonically stir for 30-60 minutes to ensure uniform distribution; the ratio of silica to silver nanoparticles is 10:1.

[0028] S4: Gradually add the nanomaterial solution to the composite moisturizing solution while continuously stirring to form a homogeneous mixture;

[0029] S5: Add sodium fluorescein to the mixture and stir until homogeneous; the sodium fluorescein should be added in multiple batches, and stirred for 5-10 minutes after each addition to ensure uniform distribution.

[0030] S6: Mix sodium bicarbonate and citric acid in the adhesive to generate bubbles through a slow reaction; the mixing ratio of sodium bicarbonate and citric acid is 2:1 to ensure the stability and persistence of the bubbles;

[0031] S7: Add xanthan gum and guar gum, and stir until completely dissolved to form a viscous adhesive matrix; the ratio of xanthan gum to guar gum is 1:1 to enhance the viscosity and flexibility of the adhesive;

[0032] S8: Add epoxidized soybean oil as a crosslinking agent to further enhance bonding strength and durability; the amount of epoxidized soybean oil added is 1-1.5%, added gradually during the stirring process, and ensuring thorough mixing;

[0033] S9: Continue stirring at low temperature to ensure all components are fully mixed, and optimize adhesive performance by adjusting pH and solids content; this step needs to be carried out at a temperature of 5-10 degrees Celsius to prevent the effects of high temperature on adhesive performance.

[0034] In a preferred embodiment, the sodium fluorescein is dissolved in deionized water and its uniform distribution is detected under ultraviolet light.

[0035] The mixing step of sodium bicarbonate and citric acid is carried out at room temperature to ensure a slow release of bubbles from the reaction.

[0036] The technical effects and advantages of this invention are as follows:

[0037] The water-based adhesive for tobacco products of this invention emits bright green fluorescence under ultraviolet light by adding 0.2-0.4% sodium fluorescein, which can be used for quality control and anti-counterfeiting detection, effectively improving the product's recognizability and security.

[0038] By adding 1-2.5% sodium bicarbonate and 1-1.5% citric acid, carbon dioxide bubbles are generated during use, providing an instant bubble effect, enhancing the visualization and control of the bonding process, and improving the user experience.

[0039] Adding 2-4% allantoin, which works together with glycerin and polyethylene glycol to form a multi-layered moisturizing barrier, effectively improves the flexibility and long-term adhesion of the adhesive, ensuring comfort during use.

[0040] 0.5-1% vitamin E and 0.05-0.1% nano silver form an antioxidant and antibacterial system, preventing the oxidative degradation of adhesives and bacterial growth, extending the product's lifespan, and ensuring its stability in different environments;

[0041] A three-dimensional conductive network structure is constructed by combining 0.1-0.3% graphene nanosheets with 0.5-1% silica nanoparticles, which improves the conductivity, mechanical strength and thermal stability of the adhesive, and enhances its adhesion and durability.

[0042] By introducing 0.01-0.05% menthol and using microencapsulation technology to control the sustained release, the product gradually releases a refreshing scent during use, enhancing the sensory experience. At the same time, combined with the fluorescence effect, it improves anti-counterfeiting and quality control. Detailed Implementation

[0043] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0044] An embodiment of the present invention provides a water-based adhesive for tobacco products, the adhesive comprising the following components by weight percentage:

[0045] Chitosan: 8-10%, used to provide basic adhesive and antibacterial properties, with a degree of deacetylation higher than 85%, used to improve solubility and adhesion. This ratio is used to ensure that the adhesive has sufficient adhesive strength and antibacterial properties, while ensuring its solubility in water.

[0046] Glycerin: 3-5%, as a moisturizing ingredient, enhances flexibility and durability. An appropriate amount of glycerin can balance the flexibility and hardness of the adhesive and prevent it from becoming brittle at low temperatures.

[0047] Polyethylene glycol (PEG): 4-6%, used to enhance moisturizing effect and improve the high temperature resistance of adhesives. The appropriate proportion of PEG can effectively improve the temperature stability of adhesives, so that they can still maintain their adhesiveness under high temperature conditions.

[0048] Sodium fluorescein: 0.2-0.4%, emits fluorescence under ultraviolet light, used for quality inspection and tracking during production and use. Sodium fluorescein in this range can ensure significant and stable fluorescence effect;

[0049] Sodium bicarbonate: 1-2.5%. Sodium bicarbonate reacts with citric acid to produce carbon dioxide bubbles, providing an immediate bubble effect and enhancing the visual appeal during the bonding process. This ratio ensures the stability and continuity of bubble formation.

[0050] Citric acid: 1-1.5%, as a foaming agent and environmentally friendly crosslinking agent, reacts with sodium bicarbonate to produce bubbles and provides good biodegradability and safety. This ratio ensures the consistency of the foaming effect and environmental performance.

[0051] Silica nanoparticles: 0.5-1%, particle size 10-50 nm, used to improve mechanical strength and heat resistance, and enhance adhesion. This proportion and particle size range can significantly improve the physical properties of the adhesive. The 10-50 nm particle size of the silica nanoparticles ensures uniform dispersion and enhances the physical properties of the adhesive. The addition amount of silica nanoparticles is 0.5-1%, which significantly improves the mechanical strength and heat resistance of the adhesive within this range. The silica nanoparticles are dispersed using ultrasonic stirring to ensure uniform distribution in the adhesive.

[0052] Silver nanoparticles: 0.05-0.1%, particle size 1-10 nanometers, used to enhance antibacterial properties and extend service life. This proportion ensures antibacterial effectiveness without affecting other properties. The 1-10 nanometer particle size ensures effective antibacterial performance. The addition ratio of silver nanoparticles at 0.05-0.1% provides strong antibacterial effects at low concentrations, preventing the growth of bacteria and mold, thereby extending the service life of adhesives. During the preparation of silver nanoparticles, they are dispersed in deionized water and subjected to ultrasonic treatment to ensure uniform distribution.

[0053] Xanthan gum: 0.2-0.4%. Xanthan gum is used to increase viscosity, providing better coating performance and stability. An appropriate amount of xanthan gum can improve the workability of adhesives.

[0054] Guar gum: 0.2-0.4%. Guar gum is used to enhance the water resistance and flexibility of adhesives. This ratio ensures that the adhesive maintains its excellent performance when humidity changes.

[0055] Epoxidized soybean oil: 1-1.5%, used as a crosslinking agent to improve bonding strength while maintaining environmentally friendly properties. This ratio can balance strength and environmental friendliness.

[0056] The remaining portion is deionized water. The use of deionized water ensures the purity of the adhesive and prevents impurities from affecting its performance.

[0057] The sodium fluorescein emits bright green fluorescence under ultraviolet light and is used for quality control and anti-counterfeiting detection. The concentration of sodium fluorescein is 0.2-0.4% to ensure sufficient fluorescence intensity even at low concentrations, while avoiding any impact on other properties of the adhesive. Sodium fluorescein is added gradually and thoroughly during the later stages of adhesive preparation to ensure its uniform distribution throughout the adhesive.

[0058] The reaction of sodium bicarbonate and citric acid provides an instant bubble effect, improving the user experience and visual appeal. The ratio of sodium bicarbonate to citric acid is 1.5-2.5% and 1-1.5%, respectively, to ensure that sufficient carbon dioxide bubbles are generated during the reaction. The generation of bubbles not only enhances the visual effect but also creates a microstructure during use, which helps to improve adhesion performance.

[0059] Fluorescent agents are used as temperature indicators, exhibiting different fluorescence intensities or color changes at different temperatures.

[0060] Additionally, it should be noted that adding 2-4% allantoin to the adhesive, in conjunction with glycerin and polyethylene glycol, improves flexibility and long-term adhesion by forming a multi-layered moisturizing barrier; adding 0.5-1% vitamin E and nano-silver forms an antioxidant and antibacterial system to prevent oxidative degradation and bacterial growth.

[0061] 0.1-0.3% of graphene nanosheets are mixed with silica nanoparticles to construct a three-dimensional conductive network structure, which is used to improve conductivity, mechanical strength and thermal stability, and to enhance adhesion by combining with chitosan; sodium fluorescein and allantoin are dissolved in deionized water and stirred under low temperature conditions to ensure uniform distribution and stabilize sodium fluorescein, which is used to provide anti-counterfeiting and quality control effects.

[0062] The adhesive incorporates 0.01-0.05% menthol, using microencapsulation technology to control its sustained release, gradually releasing a refreshing scent during use and linking it with fluorescence effects to enhance anti-counterfeiting and quality control. It also includes 0.1-0.2% phase change material (PCM), such as paraffin microparticles, utilizing its endothermic and exothermic properties to regulate temperature during bonding and provide stable adhesion. An additional 0.5-1% carbon nanotubes are introduced to enhance the adhesive's mechanical properties and thermal conductivity for high-strength and high-temperature applications. 1-2% ultrafine ferrite particles are used to give the adhesive magnetic responsiveness, enabling magnetic field control and positioning in specific situations. Finally, 0.3-0.5% UV absorber is added to protect the adhesive's stability under UV irradiation and extend its service life.

[0063] In addition, firstly, 2-4% allantoin is added to the adhesive, working together with glycerin and polyethylene glycol to form a multi-layered moisturizing barrier. Allantoin, as a highly effective moisturizer, not only retains moisture but also repairs the stratum corneum, allowing the adhesive to maintain its flexibility and stickiness even after prolonged use. Glycerin and polyethylene glycol, as commonly used moisturizers, provide basic moisturizing effects and work synergistically with allantoin to significantly improve the overall performance of the adhesive. Furthermore, 0.5-1% vitamin E and nano-silver are added to construct an antioxidant and antibacterial system. Vitamin E effectively prevents the oxidative degradation of the adhesive, extending its service life; nano-silver, through its broad-spectrum antibacterial properties, prevents bacterial growth, keeping the adhesive clean and stable.

[0064] Furthermore, this invention introduces 0.1-0.3% graphene nanosheets and silica nanoparticles into the adhesive to construct a three-dimensional conductive network structure. Combined with chitosan, this enhances adhesion. Graphene nanosheets, as an excellent conductive material, can form continuous conductive paths in the adhesive, improving its conductivity. Silica nanoparticles improve mechanical strength and thermal stability. Low-temperature stirring dissolves sodium fluorescein and allantoin in deionized water, ensuring uniform and stable distribution of sodium fluorescein. Sodium fluorescein emits fluorescence under ultraviolet light, used for anti-counterfeiting and quality control, ensuring the consistency and reliability of the adhesive in production and use.

[0065] In practical applications, this invention further enhances the functionality of the adhesive through the introduction of a series of innovative materials. The introduction of 0.01-0.05% menthol, achieved through microencapsulation technology for sustained release, allows for the gradual release of a refreshing scent during use, enhancing the user experience. Furthermore, the addition of 0.1-0.2% phase change materials, such as paraffin microparticles, utilizes their endothermic and exothermic properties to regulate the temperature during the bonding process, ensuring stable bonding. Moreover, the introduction of 0.5-1% carbon nanotubes improves the adhesive's mechanical properties and thermal conductivity, enabling excellent performance in high-strength and high-temperature environments. Simultaneously, the addition of 1-2% ultrafine ferrite particles imbues the adhesive with magnetic response characteristics, enabling specific control and positioning under magnetic fields. Finally, the addition of 0.3-0.5% ultraviolet absorber protects the adhesive's stability under ultraviolet irradiation, extending its service life in outdoor environments. In summary, this invention, through the optimization and combination of various innovative components, significantly improves the overall performance and application range of water-based tobacco adhesives.

[0066] A method for preparing a water-based adhesive for tobacco products includes the following steps:

[0067] S1: Dissolve chitin in a 2% acetic acid solution to form a homogeneous chitin solution; this step is carried out at a temperature of 50-60 degrees Celsius to ensure complete dissolution of chitin;

[0068] S2: Add glycerin and polyethylene glycol to the chitosan solution and stir until homogeneous to form a composite moisturizing solution. The order of adding glycerin and polyethylene glycol is to add glycerin first, then polyethylene glycol. Stir for 10-15 minutes after each addition to ensure thorough mixing.

[0069] S3: Disperse silica nanoparticles and silver nanoparticles in deionized water and ultrasonically stir for 30-60 minutes to ensure uniform distribution; the ratio of silica to silver nanoparticles is 10:1 to best enhance the physical properties and antibacterial effect of the adhesive.

[0070] S4: Gradually add the nanomaterial solution to the composite moisturizing solution while stirring continuously to form a homogeneous mixture. Note that this process should be carried out at a low stirring speed to avoid the generation of bubbles.

[0071] S5: Add sodium fluorescein to the mixture and stir until homogeneous; the sodium fluorescein should be added in multiple batches, and stirred for 5-10 minutes after each addition to ensure uniform distribution.

[0072] S6: Mix sodium bicarbonate and citric acid in the adhesive to generate bubbles through a slow reaction; the mixing ratio of sodium bicarbonate and citric acid is 2:1 to ensure the stability and persistence of the bubbles;

[0073] S7: Add xanthan gum and guar gum, and stir until completely dissolved to form a viscous adhesive matrix; the ratio of xanthan gum to guar gum is 1:1 to enhance the viscosity and flexibility of the adhesive;

[0074] S8: Add epoxidized soybean oil as a crosslinking agent to further enhance bonding strength and durability; the amount of epoxidized soybean oil added is 1-1.5%, added gradually during the stirring process, and ensuring thorough mixing;

[0075] S9: Continue stirring at low temperature to ensure all components are fully mixed, and optimize adhesive performance by adjusting pH and solids content; this step needs to be carried out at a temperature of 5-10 degrees Celsius to prevent the effects of high temperature on adhesive performance.

[0076] The sodium fluorescein is dissolved in deionized water and its uniform distribution is detected under ultraviolet light. Ultraviolet light detection can ensure the uniform distribution of sodium fluorescein in the adhesive, thereby guaranteeing its quality control and anti-counterfeiting functions.

[0077] The mixing step of sodium bicarbonate and citric acid is carried out at room temperature to ensure a slow release of bubbles. Mixing at room temperature can prevent the reaction from being too fast and ensure the stability and uniformity of the bubbles.

[0078] The adhesive fluoresces under ultraviolet light and generates bubbles during use, improving the visualization and control of the bonding process. It also possesses high strength, durability, antibacterial properties, and environmental friendliness. The fluorescence and bubble characteristics not only improve quality control and user experience but also enhance the adhesion and durability of the adhesive. By combining chitosan, glycerin, polyethylene glycol, sodium fluorescein, sodium bicarbonate, citric acid, silica nanoparticles, silver nanoparticles, xanthan gum, guar gum, and epoxidized soybean oil, this multifunctional adhesive meets the diverse needs of the modern tobacco industry. The anti-counterfeiting function of sodium fluorescein and the immediate visual feedback from the bubbles make the adhesive safer and more efficient to use.

[0079] The addition of sodium fluorescein is not only used for quality inspection but also for anti-counterfeiting. It verifies the authenticity of cigarettes by irradiating them with ultraviolet light, thus improving product safety. Sodium fluorescein provides optimal fluorescence within a concentration range of 0.2-0.4%, ensuring its application in production and logistics.

[0080] The reaction between sodium bicarbonate and citric acid produces bubbles that can gradually release fragrance or other functional ingredients, such as menthol, during the bonding process. This allows the cigarette to gradually release a refreshing aroma during combustion, enhancing the user's smoking experience. By adjusting the ratio of sodium bicarbonate to citric acid, the speed and duration of bubble and fragrance release can be controlled.

[0081] The addition of the bubble-forming agent can form a microporous structure in the adhesive layer, which can absorb and release stress when damaged, aiding in self-repair and extending the service life of the bonded area. The microporous structure formed by the bubbles not only enhances the adhesion of the adhesive but also provides a self-healing function, significantly improving the durability and reliability of the adhesive.

[0082] The fluorescent agent exhibits different fluorescence intensities or color changes at different temperatures, serving as a temperature indicator to help monitor the ambient temperature during cigarette transportation and storage, thus ensuring product quality. Temperature-sensitive fluorescent agents are not only used for anti-counterfeiting but also as part of product quality monitoring, ensuring product quality under various environmental conditions.

[0083] It should be noted that chitosan is used in this invention to provide basic adhesive and antibacterial properties. In the experiment, chitosan was dissolved in a 2% acetic acid solution to ensure its uniform distribution. The amount of chitosan added was 8-10%, of which the degree of deacetylation was higher than 85% to improve solubility and adhesiveness. Experimental data showed that 8-10% chitosan could provide sufficient adhesive strength and antibacterial properties while ensuring the solubility of the adhesive in water. Too low a proportion would result in insufficient adhesive strength, while too high a proportion would affect the flowability of the adhesive.

[0084] As a moisturizing ingredient, experiments have shown that 3-5% glycerin can significantly improve the flexibility and durability of adhesives. Specific experimental data shows that 3% glycerin can provide good moisturizing effects, while 5% glycerin can further enhance flexibility. However, exceeding this range will make the adhesive too viscous, affecting the user experience. The addition amount of polyethylene glycol (PEG) is 4-6% to enhance moisturizing effects and improve high-temperature resistance. Experimental results show that 4% PEG is sufficient to enhance moisturizing effects, while 6% PEG maintains adhesion under high-temperature conditions. Exceeding 6% will lead to excessively high viscosity of the adhesive.

[0085] Sodium fluorescein performs best in the concentration range of 0.2-0.4%. Experimental data shows that sodium fluorescein at this concentration can emit bright green fluorescence under ultraviolet light, which can be used for quality control and anti-counterfeiting detection. The fluorescence effect is not obvious at concentrations below 0.2%, while it will affect other properties of the adhesive if it is higher than 0.4%. The ratio of sodium bicarbonate to citric acid is 1-2.5% and 1-1.5%, respectively. Experiments show that this ratio can generate enough carbon dioxide bubbles during the reaction to ensure the stability and persistence of the bubbles. Specifically, the data shows that the reaction effect of 1.5-2.5% sodium bicarbonate and 1-1.5% citric acid is the best, with stable and controllable bubble generation.

[0086] The addition of silica nanoparticles at a concentration of 0.5-1% and a particle size of 10-50 nanometers shows that this ratio and particle size range can significantly improve the mechanical strength and heat resistance of the adhesive. The effect is not obvious when the addition is below 0.5%, while it may affect the flowability and workability of the adhesive if it exceeds 1%. The addition of silver nanoparticles at a concentration of 0.05-0.1% and a particle size of 1-10 nanometers shows that this ratio can provide strong antibacterial effect at low concentrations, prevent the growth of bacteria and mold, and extend the service life of the adhesive. Exceeding this concentration may affect other properties of the adhesive.

[0087] The proportions of xanthan gum and guar gum are both 0.2-0.4%. Experimental results show that this proportion can increase the viscosity and flexibility of the adhesive, while enhancing water resistance. Below this range, the effect is not obvious, and above this range, the adhesive will become too viscous. The amount of epoxidized soybean oil added as a crosslinking agent is 1-1.5%. Experimental data shows that this proportion can effectively improve the bonding strength while maintaining environmental protection characteristics. Below 1%, the effect is not obvious, and above 1.5% may affect other properties of the adhesive.

[0088] During the preparation process, silica nanoparticles and silver nanoparticles were dispersed in deionized water and ultrasonically stirred for 30-60 minutes to ensure uniform distribution. Experiments showed that 30 minutes of stirring time could achieve basic uniform distribution, while 60 minutes ensured optimal uniformity. When adding sodium fluorescein, it was necessary to do so in multiple steps, and stirring for 5-10 minutes after each addition to ensure uniform distribution. Experimental data showed that 5 minutes of stirring time could achieve preliminary uniformity, and 10 minutes ensured complete uniform distribution.

[0089] Sodium bicarbonate and citric acid are mixed in the adhesive to generate bubbles through a slow reaction. The mixing ratio of sodium bicarbonate and citric acid is 2:1. Experiments show that this ratio can ensure the stability and persistence of bubbles. A ratio lower than this is not effective, while a ratio higher than this will cause bubbles to be generated too quickly and are difficult to control. The ratio of xanthan gum and guar gum is 1:1 to enhance the viscosity and flexibility of the adhesive. Experimental data supports that this ratio can provide the best balance between viscosity and flexibility.

[0090] During the addition of epoxidized soybean oil, the amount added is 1-1.5%, and it is gradually added during stirring to ensure thorough mixing. Experiments show that gradual addition and thorough stirring can ensure that the epoxidized soybean oil is fully combined with other components to form a stable cross-linked structure. The effect is not obvious below 1%, and it will make the adhesive too hard if it exceeds 1.5%. Continue stirring at low temperature to ensure that all components are fully mixed. The performance of the adhesive is optimized by adjusting the pH value and solid content. Experiments show that stirring at a temperature of 5-10 degrees Celsius can prevent the influence of high temperature on the performance of the adhesive and ensure that all components are evenly distributed and stable.

[0091] Introducing 0.01-0.05% menthol and controlling its sustained release through microencapsulation technology demonstrates that this concentration range provides a continuous fragrance release, enhancing the user experience. Adding 0.1-0.2% phase change materials such as paraffin microparticles effectively regulates temperature, ensuring temperature stability during the bonding process. Carbon nanotubes at a concentration of 0.5-1% significantly improve the adhesive's mechanical properties and thermal conductivity. Ultrafine ferrite particles at a concentration of 1-2% ensure the adhesive exhibits magnetic responsiveness. UV absorbers at a concentration of 0.3-0.5% effectively protect the adhesive's stability under UV irradiation, extending its service life.

[0092] These experimental data and analyses demonstrate that the proportions of each component are scientifically sound and can achieve the expected functions and effects, ensuring the excellent performance of the water-based adhesive in practical applications.

[0093] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A water-based adhesive for a cigarette, characterized by comprising: The adhesive comprises the following components by weight percentage: Chitin: 8-10%, used to provide basic adhesion and antibacterial properties, with a degree of deacetylation higher than 85% to improve solubility and adhesion; Glycerol: 3-5%, as a moisturizing ingredient; Polyethylene glycol: 4-6%, to enhance the moisturizing effect; Fluorescein sodium: 0.2-0.4%, emitting fluorescence under ultraviolet light, used for quality control and tracking during production and use; Sodium bicarbonate: 1-2.5%, sodium bicarbonate reacts with citric acid to produce carbon dioxide bubbles; Citric acid: 1-1.5%, as a foaming agent and environmentally friendly crosslinking agent; Silicon dioxide nanoparticles: 0.5-1%, with a particle size of 10-50 nanometers; Silver nanoparticles: 0.05-0.1%, with a particle size of 1-10 nanometers; Xanthan gum: 0.2-0.4%, xanthan gum is used to increase viscosity; Guar gum: 0.2-0.4%, guar gum is used to enhance the water resistance and flexibility of the adhesive; Epoxy soybean oil: 1-1.5%, as a crosslinking agent to improve bonding strength; The remaining portion is deionized water.

2. The water-based adhesive for a cigarette according to claim 1, characterized by The fluorescein sodium emits bright green fluorescence under ultraviolet light, which is used for quality control and anti-counterfeiting detection. The concentration of fluorescein sodium is 0.2-0.4%, and the addition method of fluorescein sodium is to gradually add and fully stir uniformly in the later stage of adhesive preparation.

3. The water-based adhesive for a cigarette according to claim 2, wherein The reaction of sodium bicarbonate and citric acid provides instant bubble effect, and the ratio of sodium bicarbonate and citric acid is 1.5-2.5% and 1-1.5% respectively, to ensure enough carbon dioxide bubbles during the reaction process.

4. The water-based adhesive for a cigarette according to claim 3, wherein The fluorescent agent is used as a temperature indicator, which will show different fluorescence intensity or color change at different temperatures.

5. The water-based adhesive for a cigarette according to claim 4, wherein Add 2-4% allantoin to the adhesive, which works together with glycerol and polyethylene glycol to improve flexibility and long-term adhesion by forming a multi-layer moisture barrier; add 0.5-1% vitamin E and silver nanoparticles to form an antioxidant and antibacterial system.

6. The water-based adhesive for a cigarette according to claim 5, wherein Mix 0.1-0.3% graphene nanosheets with silicon dioxide nanoparticles to build a three-dimensional conductive network structure, and combine with chitin to enhance adhesion; dissolve fluorescein sodium and allantoin in deionized water, stir under low temperature conditions to ensure uniform distribution and stability of fluorescein sodium, which is used to provide anti-counterfeiting and quality control effect.

7. The water-based adhesive for a cigarette according to claim 6, wherein Introduce 0.01-0.05% menthol, control the slow release through microcapsule technology, make it release fresh smell gradually during use, and link with fluorescence effect; add 0.1-0.2% phase change material; introduce 0.5-1% carbon nanotubes; use 1-2% ultra-fine ferrite particles to make the adhesive have magnetic response characteristics; add 0.3-0.5% ultraviolet absorber.

8. A process for the preparation of a water-based adhesive for tobacco, characterized by, Including the following steps: S1: Dissolve chitin in 2% acetic acid solution to form a uniform chitin solution; this step is carried out at a temperature of 50-60 degrees Celsius to ensure the complete dissolution of chitin; S2: Add glycerol and polyethylene glycol to the chitin solution and stir until uniform to form a composite moisturizing solution; the order of adding glycerol and polyethylene glycol is to add glycerol first, then add polyethylene glycol, and each time after adding, stir for 10-15 minutes to ensure thorough mixing; S3: Disperse the silica nanoparticles and silver nanoparticles in deionized water and stir ultrasonically for 30-60 minutes to ensure uniform distribution; the ratio of silica and silver nanoparticles is 10:1; S4: Gradually add the nanomaterial solution to the composite moisturizing solution and continue stirring to form a uniform mixture; S5: Add fluorescein sodium to the mixture and stir until uniform; the addition of fluorescein sodium should be done in multiple times, and each time after adding, stir for 5-10 minutes to ensure uniform distribution; S6: Mix sodium bicarbonate and citric acid in the adhesive to produce bubbles through a slow reaction; the mixing ratio of sodium bicarbonate and citric acid is 2:1 to ensure the stability and persistence of the bubbles; S7: Add xanthan gum and guar gum and stir until completely dissolved to form a viscous adhesive base; the ratio of xanthan gum and guar gum is 1:1 to enhance the viscosity and flexibility of the adhesive; S8: Add epoxy soybean oil as a cross-linking agent to further enhance the bonding strength and durability; the amount of epoxy soybean oil added is 1-1.5%, which is gradually added during stirring and ensures thorough mixing; S9: Continue stirring at low temperature to ensure that all components are thoroughly mixed, and adjust the pH value and solid content to optimize the performance of the adhesive; this step needs to be carried out at a temperature of 5-10 degrees Celsius to prevent the influence of high temperature on the performance of the adhesive.

9. The method of preparing a water-based adhesive for a cigarette according to claim 8, wherein the water-based adhesive for a cigarette is prepared by adding the water-soluble polymer to the water and then adding the water-soluble polymer to the water-soluble polymer. The fluorescein sodium is dissolved in deionized water and its uniform distribution is detected under ultraviolet light; The mixing step of sodium bicarbonate and citric acid is carried out at room temperature to ensure the slow release of bubble effect of the reaction.