Aerosol generating product capable of being quickly degraded and preparation method of aerosol generating product

Abstract

According to the aerosol generating product capable of being rapidly degraded and the preparation method of the aerosol generating product, a biodegradable fuming section, a biodegradable supporting section, a biodegradable cooling section and a biodegradable filtering section are formed by designing and matching specific biodegradable materials for four functional sections of the aerosol generating product respectively; the whole section of the aerosol generating product is completely biodegradable; the whole aerosol generating product can be effectively decomposed by microorganisms under the natural environment or industrial compost condition after being used, and is finally converted into carbon dioxide, water and biomass, so that the problem of persistent plastic pollution caused by cigarette waste is completely eradicated from the source, and the minimum influence of the whole life cycle of the product on the environment is realized; the global trend of circular economy and sustainable development is positively responded.

Description

Technical Field

[0001] This patent relates to the field of heated cigarette technology, specifically to a rapidly degradable aerosol-generating product and its preparation method. Background Technology

[0002] Aerosol-generated products, especially heated cigarettes, are experiencing continued market demand as an alternative to traditional cigarettes. However, the environmental problems accompanying rising consumption are becoming increasingly prominent, posing a key challenge to the industry's sustainable development.

[0003] Currently available heated cigarette products typically consist of a core functional section that houses the smoke-generating matrix, a support section that provides structural support, a cooling section that lowers the temperature of the smoke, and a filtration section that filters the aerosol. To meet specific requirements for physical strength, thermal stability, and sensory experience, they widely rely on synthetic or semi-synthetic polymer materials such as cellulose acetate, polypropylene, and polylactic acid.

[0004] While these materials exhibit stable performance during their product lifespan, their recycling or degradation processes in the environment after disposal present serious flaws. Although polylactic acid (PLA) materials are derived from bio-based sources, complete degradation typically requires stringent industrial composting conditions, and their degradation rate in the natural environment is slow. Cellulose acetate and polypropylene, on the other hand, are even more difficult to decompose effectively by environmental microorganisms and can persist in the natural environment for decades or even centuries.

[0005] This means that hundreds of millions of discarded cigarettes and their components may eventually enter the soil and water in the form of microplastics, causing persistent environmental pollution. This seriously violates the growing global consensus on environmental protection and increasingly stringent environmental regulations.

[0006] Faced with this challenge, existing technological improvements have mostly focused on replacing materials in specific components of cigarettes, using a single type of biodegradable material to make the filter or packaging. However, such localized and piecemeal improvements struggle to achieve a balance between environmental friendliness and product performance as a whole. Simply replacing materials with ordinary biodegradable materials often results in products failing to meet basic usage requirements and significantly degrading the user experience due to insufficient material strength, poor thermal stability, low filtration efficiency, or negative impacts on the sensory quality of the smoke.

[0007] Therefore, there is a need for an aerosol-generating product, its preparation method, and an aerosol-generating system that can achieve complete biodegradability from structure to materials, thereby achieving thorough environmental protection, while ensuring that the aerosol-generated product has excellent inhalation experience and reliable physical properties, so that the product can be quickly and completely integrated into the natural cycle after its service life. Summary of the Invention

[0008] This invention aims to solve the technical problems of persistent environmental pollution caused by the use of non-degradable materials such as cellulose acetate and polypropylene in existing aerosol products, and the inability of existing biodegradable material application schemes to simultaneously meet the necessary physical strength, thermal stability, and good suction experience of the products. This patent provides the following technical solutions: In a first aspect, an aerosol-generating article is provided, comprising a biodegradable smoke-generating section, a biodegradable filter section, a biodegradable support section, and a biodegradable cooling section. The biodegradable filter section is disposed near the lip end of the aerosol-generating article, the biodegradable smoke-generating section is disposed at the distal lip end of the aerosol-generating article, and the biodegradable support section and the biodegradable cooling section are disposed between the biodegradable smoke-generating section and the biodegradable filter section. The aerosol-generating article is a fully biodegradable cigarette structure. The biodegradable smoke-generating section, the biodegradable support section, the biodegradable cooling section, and the biodegradable filter section are rolled together by a biodegradable wrapping material and reinforced by a plant-based adhesive.

[0009] Furthermore, the biodegradable smoke-generating segment includes a smoke-generating matrix and a smoke-generating covering, the smoke-generating covering being used to wrap the exterior of the smoke-generating matrix; the composition of each component of the smoke-generating matrix, by mass percentage relative to the mass of tobacco powder, is as follows: 2-4% added fiber; 3-5% binder; 15-30% atomizing agent; 100% tobacco powder; 15-35% water; wherein, the added fiber includes plant fiber, and the mass of the plant fiber in the added fiber is 1-2% relative to the mass of tobacco powder; the plant fiber includes one or more of wood pulp fiber, cotton pulp fiber, bamboo pulp fiber, straw pulp fiber, fluff pulp fiber, and hemp pulp fiber; the binder includes one or more of starch, guar gum, and sodium carboxymethyl cellulose.

[0010] Furthermore, the smoke-generating coating is made of bamboo pulp paper and / or wood pulp paper; the content of bamboo pulp and / or wood pulp in the smoke-generating coating is 95-100%; the basis weight of the smoke-generating coating is 30-60 g / m²; the flame-retardant coating includes one or more of natural flame retardants, water, and binders; the dry weight coating amount of the flame-retardant coating on the smoke-generating coating is 3-10 g / m²; the natural flame retardant is one or more of sodium alginate, starch phosphate, and montmorillonite.

[0011] Furthermore, the biodegradable support segment is a hollow paper tube; the inner wall of the hollow paper tube is one of a spiral tube, a hollow cylinder, or a honeycomb structure; the hollow paper tube is a high-density molded paper tube or a ceramic paper tube; the ceramic paper tube is prepared by plant fibers and inorganic materials.

[0012] Furthermore, the high-density molded paper tube is formed by molding plant fibers and reinforcing fibers with an adhesive; the reinforcing fibers include sisal fibers and / or kenaf fibers; the composition of the high-density molded paper tube, by weight percentage, includes: 60-80% plant fibers; 15-30% reinforcing fibers; and 3-10% adhesive; wherein, the apparent density of the hollow paper tube is not less than 0.8 g / cm³; and the wall thickness of the hollow paper tube is 0.5-1.5 mm.

[0013] Furthermore, the biodegradable cooling section includes cooling particles and a cooling coating, wherein the cooling coating encapsulates the cooling particles; the cooling particles are polyhydroxyalkanoate particles; the cooling particles are prepared using supercritical fluid foaming technology; the cooling particles are porous particles; the cooling coating is polylactic acid nonwoven fabric or paper tube; the particle size distribution of the cooling particles is 1.0~3.0 mm; the bulk density of the cooling particles is 0.30~0.50 g / cm³; and the melting temperature of the cooling particles is not less than 160℃.

[0014] Furthermore, the biodegradable filtration section is a paper-based filter rod or a modified filter rod; the components of the paper-based filter rod, by weight percentage, include: 85-98% plant fiber; 1-10% wet strength agent; 0.5-3% retention and filtration aid; 0.5-2% environmentally friendly hydrophobic agent; the wet strength agent is polyamide epichlorohydrin resin or chitosan; the retention and filtration aid is anionic or cationic, the anionic aid is polyacrylamide, and the cationic aid is starch-based; the environmentally friendly hydrophobic agent is alkyl ketene dimer and / or rosin gum; the paper-based filter rod is a filter rod with a density gradient, either with a continuous density change or a discontinuous density change; the overall apparent density of the paper-based filter rod is 0.35-0.65 g / cm³; the density at the air inlet end of the paper-based filter rod is 0.35-0.45 g / cm³; and the density at the air outlet end of the paper-based filter rod is 0.50-0.65 g / cm³.

[0015] Furthermore, the modified filter rod is prepared using blended modified fibers. The components of the modified filter rod, by weight percentage, include: cellulose acetate 59-68%, 68-77%, or 77-86%; poly(butylene adipate) / terephthalate 14-23%, 23-32%, or 32-41%; compatibilizer 0.5-2%, 2-3.5%, or 3.5-5%; the compatibilizer includes maleic anhydride grafts.

[0016] Secondly, a method for preparing an aerosol-generating product, the method comprising the following steps: Step S1: Selecting a corresponding biodegradable filter section and preparing raw materials for a biodegradable smoke-generating section, a biodegradable support section, a biodegradable cooling section, and a biodegradable filter section; Step S2: Preparing the biodegradable smoke-generating section, the biodegradable support section, the biodegradable cooling section, and the biodegradable filter section respectively; Step S3: Rolling the biodegradable smoke-generating section, the biodegradable support section, the biodegradable cooling section, and the biodegradable filter section together with a biodegradable wrapping material and reinforcing the connection with a plant-based adhesive to obtain the aerosol-generating product.

[0017] Thirdly, an aerosol generation system, the aerosol generation system comprising the aforementioned aerosol generation article.

[0018] This patent has the following beneficial effects: 1. A method for preparing an aerosol generating product and an aerosol generating system are provided. By designing and matching specific biodegradable materials for the four functional sections of the aerosol generating product to form a biodegradable smoke generation section, a biodegradable support section, a biodegradable cooling section and a biodegradable filtration section, a fully biodegradable environmentally friendly aerosol generating product is formed.

[0019] 2. This patent achieves a complete, systematic, and environmentally friendly replacement of traditional non-degradable plastic materials in aerosol-generating products, encompassing the smoke generation section, support section, cooling section, and filtration section. All core functional components of the aerosol-generating product abandon traditional non-degradable plastic materials, instead employing separately designed and matched biodegradable or compostable materials. This allows the entire aerosol-generating product to be effectively decomposed by microorganisms under natural environmental or industrial composting conditions after use, ultimately converting into carbon dioxide, water, and biomass. This eliminates persistent plastic pollution caused by discarded cigarettes at its source, minimizing the product's environmental impact throughout its entire lifecycle and actively responding to the global trend of circular economy and sustainable development.

[0020] 3. While ensuring excellent environmental benefits, this invention, through material formulation and structural parameter design, guarantees that the product possesses comprehensive performance that is no less than, and even superior to, traditional products. Specifically, in the smoke-generating section, plant pulp paper with precise quantitative control is used as the covering material, coated with a specific amount of natural flame retardant. This design solves the problem of easy carbonization and damage of biodegradable covering materials in the early stages of heating, ensuring the stability and safety of the heating process. In the support section, by introducing a high proportion of aspect ratio reinforcing fibers and an optimized molding process, a hollow paper tube with high apparent density is prepared, giving it good mechanical strength and compressive toughness, enabling it to stably support the heater and maintain unobstructed airflow channels. In the cooling section, porous polyhydroxyalkanoate particles prepared using supercritical fluid foaming technology are selected. Their specific particle size, bulk density, and melting temperature ensure extremely high specific surface area and thermal stability, efficiently absorbing and dispersing flue gas heat, providing a significant cooling effect, and maintaining morphological stability at operating temperatures.

[0021] 4. In the filtration section of this patent, the invention provides two parallel technical approaches: one is to construct a specially designed paper-based filter rod with an axial density gradient, achieving precise control of physical filtration performance through its gradient structure of sparser front and denser back, effectively intercepting particulate matter while maintaining low suction resistance; the other is to use a blended modified fiber filter rod of cellulose acetate and poly(butylene adipate / terephthalate), significantly improving environmental biodegradability while retaining good filtration performance through the regulation of molecular chain structure. Both filter rods successfully balance filtration efficiency, smooth suction, and environmental friendliness.

[0022] 5. Through the refined segmented design described above, the final integrated aerosol-generated product achieves essentially the same core sensory experience and physical indicators as traditional products using non-degradable materials. Key physical parameters such as draw resistance and smoke outlet temperature fall within suitable ranges, ensuring comfortable vaping. Professional sensory evaluation experiments further confirm that products made with the environmentally friendly materials of this invention achieve levels approaching those of traditional high-quality products in multiple sensory indicators, including aroma quality, smoke fullness, taste comfort, and irritation, achieving a breakthrough in environmental protection without compromising the user experience. This changes the previous perception that environmentally friendly materials often come with performance compromises, enabling large-scale market application of aerosol-generated products.

[0023] 6. In this patent, the plant fibers, natural binders, inorganic fillers and other raw materials are widely available and cost-controllable. The coating, molding, foaming and papermaking processes involved can be adapted to existing production line technologies or implemented with appropriate modifications, laying a solid foundation for the large-scale and economical production of the product. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this patent, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this patent and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a flowchart of the preparation method in this patent; Figure 2 This is a schematic diagram of the structure of the aerosol-generated product in Example 1.

[0026] The reference numerals in the attached figures are explained as follows: 100: Biodegradable smoke-generating section; 200: Biodegradable support segment; 300: Biodegradable cooling section; 400: Biodegradable filtration section. Detailed Implementation

[0027] The detailed features and advantages of this application are described below in the specific embodiments. The content of this description is sufficient to enable any person skilled in the art to understand the technical content of this application and implement it accordingly. Based on the specification, claims and drawings disclosed in this specification, a person skilled in the art can easily understand the related objectives and advantages of this application.

[0028] The invention will now be described with reference to the accompanying drawings, in which similar reference numerals denote similar elements. While specific structures and arrangements are discussed, it should be understood that this is done merely for illustrative purposes. Those skilled in the art will recognize that other structures and arrangements can be used without departing from the spirit and scope of the invention. It will be apparent to those skilled in the art that the invention can also be used in a variety of other applications.

[0029] In this specification and claims, several terms will be used, and unless otherwise indicated, these terms will be defined to have the following meanings: The singular forms “a” and “the” include their corresponding plural forms. “At least one” means one or more, and “more” means two or more. “At least one of the following” or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can be expressed as: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0030] All figures used to represent component amounts, properties (e.g., molecular weight), reaction conditions, etc., should be considered to be modified in all cases by the terms "within the unavoidable margin of error" or "about". Therefore, the numerical values ​​set forth herein are approximate and may vary depending on the desired properties sought to be obtained by the present invention. The principles of equivalents, which are applied to a minimum and not intended to limit the scope of the claims, should be applied, for example, each value should be interpreted at least according to the reported significant digits and by applying conventional rounding techniques.

[0031] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. A and B can be singular or plural. Additionally, the character " / " in this article generally indicates an "or" relationship between the preceding and following related objects, but it can also represent an "and / or" relationship. Please refer to the context for a more accurate understanding.

[0032] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product is usually placed during use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0033] Unless otherwise indicated, the following abbreviations have the following meanings, and any other abbreviations used herein but not defined have their generally accepted standard meanings: All other terms used herein for special definition are intended to have the general meaning understood by one of ordinary skill in the art, and in particular, meaning that one of ordinary skill in the art, upon reading the claims, specification and drawings of this patent, can directly and without doubt determine how the technical solution of this patent can be implemented.

[0034] Even if there are incomplete descriptions, omissions, or ambiguities in the grammar, words, punctuation, graphics, symbols, etc. of the claims, specification, and drawings of this patent, a person skilled in the art can still arrive at the only correct understanding by reading the claims, specification, and drawings as a whole without extensive reasoning or experimentation, and effectively exclude various incorrect interpretations that are not aimed at achieving the purpose of this patent.

[0035] Those skilled in the art would first choose to read the claims, specification, and drawings of this patent to reasonably interpret the terms; secondly, they would choose to refer to the relevant definitions in other documents published by the applicant before the filing date to reasonably interpret the terms; thirdly, they would choose the references cited in this patent to reasonably interpret the terms; and finally, they would choose to combine the technical dictionaries, technical manuals, reference books, textbooks, national or industry technical standards, etc., commonly used by those skilled in the art to reasonably interpret the terms.

[0036] To make the objectives, technical solutions, and advantages of this application clearer, the following will describe in detail its implementation methods in conjunction with the specific structure and working process of the device of the present invention.

[0037] Please refer to Figure 1 A method for preparing an aerosol-generated product, the method comprising the following steps: Step S1: Select the corresponding biodegradable filtration section and prepare the raw materials for the biodegradable smoke generation section, biodegradable support section, biodegradable cooling section and biodegradable filtration section. Step S2: Prepare the biodegradable smoke generation section, biodegradable support section, biodegradable cooling section, and biodegradable filtration section respectively; An environmentally friendly aerosol generating product includes a smoke-generating section, a support section, a cooling section, and a filtration section. The filtration section is located near the lip end of the aerosol generating product, the smoke-generating section is located at the far lip end of the aerosol generating product, and the support section and the cooling section are located between the smoke-generating section and the filtration section. The aerosol generating product is a fully biodegradable cigarette structure.

[0038] Specifically, the smoke-generating section is a biodegradable smoke-generating section, the support section is a biodegradable support section, the cooling section is a biodegradable cooling section, and the filtration section is a biodegradable filtration section. The biodegradable smoke-generating section, biodegradable support section, biodegradable cooling section, and biodegradable filtration section are connected by being rolled together with biodegradable wrapping material and reinforced with plant-based adhesives.

[0039] Specifically, plant-based adhesives include one or more of modified starch, protein-based adhesives, and cellulose derivative adhesives. Modified starch includes oxidized starch, hydroxypropyl starch, and acetate starch; protein-based adhesives include soy protein isolate adhesives; and cellulose derivative adhesives include sodium carboxymethyl cellulose.

[0040] The biodegradable smoke-generating section includes a smoke-generating matrix and a smoke-generating cover. The smoke-generating cover is used to wrap the outside of the smoke-generating matrix, and the inner or outer wall of the smoke-generating cover is coated with a flame-retardant coating to prevent the smoke-generating cover from carbonizing prematurely in the initial stage of heating.

[0041] Specifically, the smoking matrix is ​​reconstituted tobacco flakes, and the proportions of each component of the smoking matrix relative to the mass of tobacco powder are as follows: Added fiber 2-4%; Adhesive 3~5%; Atomizing agent 15-30%; 100% tobacco powder; Water content: 15-35%.

[0042] The added fiber includes plant fiber, wherein the mass of the plant fiber in the added fiber is 1 to 2% of the mass of the tobacco powder.

[0043] Plant fibers include one or more of the following: wood pulp fiber, cotton pulp fiber, bamboo pulp fiber, straw pulp fiber, fluff pulp fiber, and hemp pulp fiber.

[0044] The binder is a natural binder, including one or more of starch, guar gum, and sodium carboxymethyl cellulose.

[0045] The smoke-generating packaging is made of bamboo pulp paper and / or wood pulp paper, and the content of bamboo pulp and / or wood pulp in the smoke-generating packaging is 95-100%.

[0046] Specifically, the basis weight of the smoke-generating wrapper is 30~60 g / m². This basis weight range ensures that the wrapping material has sufficient initial mechanical strength to withstand subsequent rolling processes, while maintaining its porosity, breathability, and biodegradability.

[0047] The flame-retardant coating applied to the smoke-generating enclosure includes one or more of a natural flame retardant, water, and a binder. Preferably, the natural flame retardant is prepared by mixing it with water and a binder and then applying it to the inner wall of the smoke-generating enclosure as an aqueous slurry.

[0048] The dry weight coating amount of flame retardant coating on smoke-generating parts is 3~10 g / m².

[0049] The natural flame retardant is one or more of sodium alginate, starch phosphate and montmorillonite.

[0050] The biodegradable support section is a hollow paper tube that connects the smoke-generating section and the cooling section. The inner wall of the hollow paper tube is one of the following: spiral tube, hollow cylinder, or honeycomb structure.

[0051] Among them, the hollow paper tube is a high-density molded paper tube or a ceramic paper tube, and the ceramic paper tube is prepared by plant fiber and inorganic materials.

[0052] Specifically, ceramic paper tubes are made by adding inorganic materials such as diatomaceous earth and kaolin to plant fibers.

[0053] Specifically, high-density molded paper tubes are formed by molding plant fibers and reinforcing fibers using an adhesive.

[0054] Specifically, the reinforcing fibers are selected from sisal fibers, kenaf fibers, or other natural plant fibers with a high aspect ratio. These fibers form a mesh-like skeleton in the matrix, improving the compressive strength and toughness of the paper tube and preventing it from collapsing under pressure in the heater.

[0055] Specifically, plant fibers are selected from bamboo pulp, wood pulp, or a mixture of both. Plant fibers, as the primary substrate, provide basic molding capabilities and biodegradability.

[0056] Specifically, the binder is selected from one or more of starch, guar gum, and sodium carboxymethyl cellulose (CMC). The binder is used to enhance the bonding force between fibers and increase the density and stiffness of the paper tube.

[0057] Specifically, the components of high-density molded paper tubes, by weight percentage, include: Plant fiber accounts for 60-80%; The reinforcing fiber content is 15-30%; The adhesive content is 3-10%; The apparent density of the hollow paper tube is not less than 0.8 g / cm³; the wall thickness of the hollow paper tube is 0.5~1.5 mm.

[0058] The biodegradable cooling section includes cooling particles and a cooling coating. The cooling coating wraps around the cooling particles, which are polyhydroxyalkanoate (PHA) particles. PHA particles have a porous structure and can effectively absorb and disperse the heat of flue gas.

[0059] Specifically, the cooling particles are prepared using supercritical fluid foaming technology; the cooling particles are porous particles. This process uses carbon dioxide or nitrogen as a physical foaming agent, which can control the size and distribution of the pores to form a uniform microporous structure.

[0060] The cooling covering is made of paper tube.

[0061] Specifically, the cooling particles have a particle size distribution of 1.0~3.0 mm. This particle size range allows for the formation of uniform and sufficiently large gaps between the particles, ensuring smooth airflow and avoiding excessive suction resistance. If the particle size is too small, it will result in overly dense packing and increased suction resistance; if it is too large, the specific surface area will decrease, affecting the cooling efficiency.

[0062] In particular, the bulk density of the cooling particles is 0.30~0.50 g / cm³. The low bulk density means that the cooling particles have a rich internal cavity structure, which is the key to their high specific surface area and efficient heat storage capacity.

[0063] In particular, the melting temperature (Tm) of the cooling particles is not less than 160°C, ensuring that the cooling particles maintain their cooling particle shape and do not melt at the working temperature of heated cigarettes, thereby continuously exerting the cooling effect.

[0064] The biodegradable filtration section is a cylindrical paper-based filter rod or a modified filter rod.

[0065] Among them, paper-based filter rod materials can construct axial density gradients and microscopic multi-level channels, achieving precise control of physical filtration performance in paper-based filter rods, thus taking into account the characteristics of low suction resistance, high efficiency and environmental protection.

[0066] The components of the paper-based filter rod, by weight percentage, include: Plant fiber 85-98%; 1-10% wet strength agent; Retention and filtration aid 0.5-3%; Environmentally friendly hydrophobic agent 0.5~2%.

[0067] The wet strength agent is either polyamide epichlorohydrin resin (PAE) or chitosan. PAE is a commonly used environmentally friendly wet strength agent in the paper industry. It forms a cross-linked network between fibers, which can significantly improve the strength of filter paper in humid environments and prevent it from softening and breaking during suction. Chitosan, as a fully bio-based alternative, has both reinforcing and antibacterial properties.

[0068] Retention and filtration aids are either anionic or cationic. Anionic aids are polyacrylamide (APAM) aids, and cationic aids are starch-based aids. They are used to improve the retention rate of fine fibers and fillers during the papermaking process, making the paper sheet structure more uniform.

[0069] Environmentally friendly hydrophobic agents are selected from alkyl ketene dimers (AKD) or rosin gum. These agents impart a certain degree of hydrophobicity to the fibers, reducing the softening effect of flue gas moisture on the filter rod structure and maintaining stable filtration performance.

[0070] In particular, the paper-based filter rod is a filter rod with a density gradient. Through directional control during the papermaking process, the filter rod forms a precise density change in the axial direction. The overall apparent density of the paper-based filter rod is 0.35 ~ 0.65 g / cm³.

[0071] The density of the inlet end of the paper-based filter rod is 0.35~0.45 g / cm³. The function of the inlet end of the paper-based filter rod is that the low-density area has a loose structure and high porosity, and its main functions are diffusion and coarse filtration. It can intercept most of the larger particles with low airflow resistance and slow down and diffuse the flue gas here, preparing it for subsequent fine filtration.

[0072] The density of the air outlet end of the paper-based filter rod is 0.50 ~ 0.65 g / cm³. The function of the air outlet end of the paper-based filter rod is to create a dense high-density area with a more compact fiber arrangement, and its main function is adsorption and fine filtration. It can effectively capture particulate matter (TPM) and condensed aerosols in flue gas.

[0073] The transition zone is located in the middle section of the paper-based filter rod, specifically between the air inlet and outlet ends of the paper-based filter rod. This transition zone can be a continuously varying density zone or a clearly defined series of segments.

[0074] The modified filter rod is prepared using blended modified fibers. The components of the modified filter rod, by weight percentage, include: Cellulose acetate 59-68%, 68-77%, or 77-86%; Polybutylene adipate / terephthalate 14~23%, 23~32% or 32~41%; Compatibilizer 0.5~2%, 2~3.5% or 3.5~5%.

[0075] Cellulose acetate (CA) serves as the main framework of the filter rod, ensuring sufficient fiber strength and filtration efficiency. A proportion below 60% will lead to difficulties in fiber formation and decreased filtration performance; a proportion above 85% will result in insignificant degradation-promoting effects.

[0076] Polybutylene adipate (PBAT) acts as a degradation promoter. PBAT molecular chains can penetrate and disrupt the tight packing of CA molecular chains, thereby accelerating degradation.

[0077] The compatibilizer includes maleic anhydride graft (MAH-g-PBAT), which is used to improve the compatibility of CA and PBAT, two polymers with different polarities, prevent phase separation, and ensure the uniformity and mechanical stability of the blended fibers.

[0078] Step S3: The biodegradable smoke generation section, biodegradable support section, biodegradable cooling section and biodegradable filtration section are rolled together with biodegradable wrapping material and reinforced with plant-based adhesive to obtain an aerosol generation product.

[0079] Table 1 lists the names of the raw materials and their suppliers used in the following examples and comparative examples.

[0080] Table 1. Names of Raw Materials and Suppliers

[0081] Example 1

[0082] This embodiment describes an environmentally friendly aerosol-generating product; please refer to [reference needed]. Figure 2 It includes a smoke-generating section, a support section, a cooling section, and a filtration section. The filtration section is located near the lip end of the aerosol-generating product, the smoke-generating section is located at the far lip end of the aerosol-generating product, and the support section and the cooling section are located between the smoke-generating section and the filtration section. The aerosol-generating product is a fully biodegradable cigarette structure.

[0083] Specifically, the smoke-generating section is a biodegradable smoke-generating section 100, the support section is a biodegradable support section 200, the cooling section is a biodegradable cooling section 300, and the filtration section is a biodegradable filtration section 400.

[0084] The biodegradable smoke-generating section 100 includes a smoke-generating matrix and a smoke-generating cover. The smoke-generating cover is used to wrap the outside of the smoke-generating matrix, and the inner or outer wall of the smoke-generating cover is coated with a flame-retardant coating to prevent the smoke-generating cover from carbonizing prematurely in the initial stage of heating.

[0085] Specifically, the smoking matrix is ​​reconstituted tobacco flakes. The percentage of each component of the smoking matrix relative to the mass of tobacco powder, and the proportion of each component are as follows: added fiber, binder, atomizing agent, tobacco powder, water. The added fiber includes plant fiber, and the mass of the plant fiber in the added fiber is preferably 1 to 2% of the mass of the tobacco powder.

[0086] The preferred plant fiber is bamboo pulp fiber.

[0087] The adhesive is a natural adhesive, preferably guar gum.

[0088] The smoke-generating cover is made of bamboo pulp paper, and the bamboo pulp content in the smoke-generating cover is preferably 100%.

[0089] In particular, the preferred basis weight of the smoke-generating wrapper is 30~60 g / m². This basis weight range ensures that the wrapping material has sufficient initial mechanical strength to withstand subsequent rolling processes, while maintaining its porosity, breathability, and biodegradability.

[0090] The flame-retardant coating applied to the smoke-generating enclosure comprises a natural flame retardant, water, and a binder. Preferably, the natural flame retardant is prepared by mixing it with water and a binder and then applying it as an aqueous slurry to the inner wall of the smoke-generating enclosure.

[0091] The dry weight coating amount of flame retardant coating on smoke-generating parts is preferably 3~10 g / m².

[0092] Sodium alginate is preferred as a natural flame retardant.

[0093] The biodegradable support section 200 is a hollow paper tube that connects the smoke generation section and the cooling section. The inner wall of the hollow paper tube is spiral tubular.

[0094] Among them, the hollow paper tube is a high-density molded paper tube, which is formed by molding plant fibers and reinforcing fibers with an adhesive.

[0095] Specifically, the reinforcing fibers are selected from sisal fibers. These sisal fibers form a network skeleton in the matrix, which improves the compressive strength and toughness of the paper tube and prevents it from collapsing under pressure in the heater.

[0096] Specifically, the plant fibers are selected from bamboo pulp. Plant fibers, as the main substrate, provide basic molding capabilities and biodegradability.

[0097] Specifically, the binder is selected from guar gum. The binder is used to enhance the bonding force between fibers and increase the density and stiffness of the paper tube.

[0098] Specifically, the components of high-density molded paper tubes, by weight percentage, include: Plant fiber accounts for 60-80%; The reinforcing fiber content is 15-30%; The adhesive content is 3-10%; The apparent density of the hollow paper tube is not less than 0.8 g / cm³; the wall thickness of the hollow paper tube is preferably 0.5~1.5 mm.

[0099] The biodegradable cooling section 300 includes cooling particles and a cooling coating. The cooling coating wraps around the cooling particles, which are polyhydroxyalkanoate (PHA) particles. The PHA particles have a porous structure and can effectively absorb and disperse the heat of the flue gas.

[0100] Specifically, the cooling particles are prepared using supercritical fluid foaming technology; the cooling particles are porous particles. This process uses carbon dioxide or nitrogen as a physical foaming agent, which can control the size and distribution of the pores to form a uniform microporous structure.

[0101] The cooling covering is made of paper tube.

[0102] Specifically, the cooling particles have a particle size distribution of 1.0~3.0 mm. This particle size range allows for the formation of uniform and sufficiently large gaps between the particles, ensuring smooth airflow and avoiding excessive suction resistance. If the particle size is too small, it will result in overly dense packing and increased suction resistance; if it is too large, the specific surface area will decrease, affecting the cooling efficiency.

[0103] In particular, the bulk density of the cooling particles is 0.30~0.50 g / cm³. The low bulk density means that the cooling particles have a rich internal cavity structure, which is the key to their high specific surface area and efficient heat storage capacity.

[0104] In particular, the melting temperature (Tm) of the cooling particles is not less than 160°C, ensuring that the cooling particles maintain their cooling particle shape and do not melt at the working temperature of heated cigarettes, thereby continuously exerting the cooling effect.

[0105] In this embodiment, the biodegradable filter 400 is a cylindrical paper-based filter rod.

[0106] Paper-based filter rod materials can construct axial density gradients and microscopic multi-level channels, enabling precise control of physical filtration performance within the paper-based filter rod, thus achieving a balance of low suction resistance, high efficiency, and environmental friendliness.

[0107] The components of the paper-based filter rod, by weight percentage, include: Plant fiber 85-98%; 1-10% wet strength agent; Retention and filtration aid 0.5-3%; Environmentally friendly hydrophobic agent 0.5~2%.

[0108] Among them, the wet strength agent is polyamide epichlorohydrin resin (PAE). PAE is a commonly used environmentally friendly wet strength agent in the papermaking industry. It forms a cross-linked network between fibers, which can significantly improve the strength of filter paper in a humid environment and prevent it from softening and breaking during the suction process.

[0109] The retention and filtration aid is an anionic polyacrylamide (APAM) additive, used to improve the retention rate of fine fibers and fillers during the papermaking process, making the paper sheet structure more uniform.

[0110] The environmentally friendly hydrophobic agent is alkyl ketene dimer (AKD). This environmentally friendly hydrophobic agent is used to impart a certain degree of hydrophobicity to the fibers, reduce the softening effect of flue gas moisture on the filter rod structure, and maintain stable filtration performance.

[0111] In particular, the paper-based filter rod is a filter rod with a density gradient. Through directional control during the papermaking process, the filter rod forms a precise density change in the axial direction. The overall apparent density of the paper-based filter rod is preferably 0.35 ~ 0.65 g / cm³.

[0112] The density of the air inlet end of the paper-based filter rod is preferably 0.35~0.45 g / cm³. The function of the air inlet end of the paper-based filter rod is that the low-density region has a loose structure and high porosity, and its main functions are diffusion and coarse filtration. It can intercept most of the larger particles with low airflow resistance and slow down and diffuse the flue gas here, preparing it for subsequent fine filtration.

[0113] The density of the outlet end of the paper-based filter rod is preferably 0.50 ~ 0.65 g / cm³. The function of the outlet end of the paper-based filter rod is to create a dense high-density area with a more compact fiber arrangement, and its main functions are adsorption and fine filtration. It can effectively capture particulate matter (TPM) and condensed aerosols in flue gas.

[0114] The transition zone is located in the middle section of the paper-based filter rod, specifically between the air inlet and outlet ends of the paper-based filter rod. This transition zone can be a zone with continuously changing density.

[0115] The biodegradable smoke-generating section 100, the biodegradable support section 200, the biodegradable cooling section 300, and the biodegradable filtration section 400 are connected by an adhesive to obtain the aerosol generating product A1 of this embodiment. The adhesive is a biodegradable plant-based adhesive.

[0116] Example 2

[0117] This embodiment provides an environmentally friendly aerosol generating product, comprising a smoke-generating section, a support section, a cooling section, and a filtration section. The filtration section is located near the lip end of the aerosol generating product, the smoke-generating section is located at the far lip end of the aerosol generating product, and the support section and the cooling section are located between the smoke-generating section and the filtration section. The aerosol generating product is a fully biodegradable cigarette structure.

[0118] Specifically, the smoke-generating section is a biodegradable smoke-generating section, the support section is a biodegradable support section, the cooling section is a biodegradable cooling section, and the filtration section is a biodegradable filtration section.

[0119] The biodegradable smoke-generating section includes a smoke-generating matrix and a smoke-generating cover. The smoke-generating cover is used to wrap the outside of the smoke-generating matrix, and the inner or outer wall of the smoke-generating cover is coated with a flame-retardant coating to prevent the smoke-generating cover from carbonizing prematurely in the initial stage of heating.

[0120] Specifically, the smoking matrix is ​​reconstituted tobacco flakes, and the percentage of each component of the smoking matrix relative to the mass of tobacco powder is as follows: Added fiber 2-4%; Adhesive 3~5%; Atomizing agent 15-30%; 100% tobacco powder; Water content: 15-35%.

[0121] The added fiber includes plant fiber, and the mass of the plant fiber in the added fiber is preferably 1 to 2% of the mass of the tobacco powder.

[0122] The preferred plant fiber is bamboo pulp fiber.

[0123] The adhesive is a natural adhesive, preferably guar gum.

[0124] The smoke-generating cover is made of bamboo pulp paper, and the bamboo pulp content in the smoke-generating cover is preferably 100%.

[0125] In particular, the preferred basis weight of the smoke-generating wrapper is 30~60 g / m². This basis weight range ensures that the wrapping material has sufficient initial mechanical strength to withstand subsequent rolling processes, while maintaining its porosity, breathability, and biodegradability.

[0126] The flame-retardant coating applied to the smoke-generating enclosure comprises a natural flame retardant, water, and a binder. Preferably, the natural flame retardant is prepared by mixing it with water and a binder and then applying it as an aqueous slurry to the inner wall of the smoke-generating enclosure.

[0127] The dry weight coating amount of flame retardant coating on smoke-generating parts is preferably 3~10 g / m².

[0128] Sodium alginate is preferred as a natural flame retardant.

[0129] The biodegradable support section is a hollow paper tube that connects the smoke-generating section and the cooling section. The inner wall of the hollow paper tube is spiral-shaped.

[0130] Among them, the hollow paper tube is a high-density molded paper tube, which is formed by molding plant fibers and reinforcing fibers with an adhesive.

[0131] Specifically, the reinforcing fibers are selected from sisal fibers. These sisal fibers form a network skeleton in the matrix, which improves the compressive strength and toughness of the paper tube and prevents it from collapsing under pressure in the heater.

[0132] Specifically, the plant fibers are selected from bamboo pulp. Plant fibers, as the main substrate, provide basic molding capabilities and biodegradability.

[0133] Specifically, the binder is selected from guar gum. The binder is used to enhance the bonding force between fibers and increase the density and stiffness of the paper tube.

[0134] Specifically, the components of high-density molded paper tubes, by weight percentage, include: Plant fiber accounts for 60-80%; The reinforcing fiber content is 15-30%; The adhesive content is 3-10%; The apparent density of the hollow paper tube is not less than 0.8 g / cm³; the wall thickness of the hollow paper tube is preferably 0.5~1.5 mm.

[0135] The biodegradable cooling section includes cooling particles and a cooling coating. The cooling coating wraps around the cooling particles, which are polyhydroxyalkanoate (PHA) particles. PHA particles have a porous structure and can effectively absorb and disperse the heat of flue gas.

[0136] Specifically, the cooling particles are prepared using supercritical fluid foaming technology; the cooling particles are porous particles. This process uses carbon dioxide or nitrogen as a physical foaming agent, which can control the size and distribution of the pores to form a uniform microporous structure.

[0137] The cooling covering is made of paper tube.

[0138] Specifically, the cooling particles have a particle size distribution of 1.0~3.0 mm. This particle size range allows for the formation of uniform and sufficiently large gaps between the particles, ensuring smooth airflow and avoiding excessive suction resistance. If the particle size is too small, it will result in overly dense packing and increased suction resistance; if it is too large, the specific surface area will decrease, affecting the cooling efficiency.

[0139] In particular, the bulk density of the cooling particles is 0.30~0.50 g / cm³. The low bulk density means that the cooling particles have a rich internal cavity structure, which is the key to their high specific surface area and efficient heat storage capacity.

[0140] In particular, the melting temperature (Tm) of the cooling particles is not less than 160°C, ensuring that the cooling particles maintain their cooling particle shape and do not melt at the working temperature of heated cigarettes, thereby continuously exerting the cooling effect.

[0141] In this embodiment, the biodegradable filtration section is a cylindrical modified filter rod.

[0142] The modified filter rod is prepared using blended modified fibers. The components of the modified filter rod, by weight percentage, include: Cellulose acetate 70%; Poly(butylene adipate) 26.5%; Compatibilizer 3.5%.

[0143] Cellulose acetate (CA) serves as the main framework of the filter rod, ensuring sufficient fiber strength and filtration efficiency. A proportion below 60% will lead to difficulties in fiber formation and decreased filtration performance; a proportion above 85% will result in insignificant degradation-promoting effects.

[0144] Polybutylene adipate (PBAT) acts as a degradation promoter. PBAT molecular chains can penetrate and disrupt the tight packing of CA molecular chains, thereby accelerating degradation.

[0145] The compatibilizer is maleic anhydride graft (MAH-g-PBAT), which is used to improve the compatibility of CA and PBAT, two polymers with different polarities, prevent phase separation, and ensure the uniformity and mechanical stability of the blended fibers.

[0146] The biodegradable smoke-generating section, biodegradable support section, biodegradable cooling section, and biodegradable filtration section are rolled together with a biodegradable wrapping material and reinforced with a plant-based adhesive to obtain the aerosol-generating product A2 of this embodiment. The adhesive is a biodegradable plant-based adhesive.

[0147] Comparative Example

[0148] This embodiment describes a non-degradable aerosol generating product, comprising a smoke-generating section, a support section, a cooling section, and a filter section. The filter section is located near the lip end of the aerosol generating product, the smoke-generating section is located at the far lip end of the aerosol generating product, and the support section and the cooling section are located between the smoke-generating section and the filter section. The aerosol generating product is a non-biodegradable cigarette structure.

[0149] Specifically, the comparison cigarette is a regular heated cigarette with a size of 45mm × 22.5mm.

[0150] The cigarette is 45mm long and 22.5mm in circumference. The non-degradable materials mainly include aluminum foil cigarette paper, cellulose acetate filter rod, and cellulose acetate hollow tube.

[0151] In this embodiment, the filter section is a cylindrical, non-degradable cellulose acetate filter rod.

[0152] Among them, cellulose acetate filter rods are made from cellulose diacetate filaments, forming paper and other main raw materials, which are processed, rolled and slit. The filaments have a single denier of 5~30 and a total denier of 20,000~50,000.

[0153] The aerosol generating product D1 of this embodiment is obtained by wrapping the smoke-generating section, the support section, the cooling section and the filtration section together with a wrapping material.

[0154] Biodegradation effect test experiment

[0155] The aerosol-generating products A1 and A2 in the examples were compared with the aerosol-generating product D1 in the comparative example for biodegradation effect testing.

[0156] Test Standard: ISO 14855-1:2012 "Determination of the final aerobic biodegradability of materials under controlled composting conditions—Method by determination of carbon dioxide released—Part 1: General method"

[0157] Testing period: 180 days

[0158] Test sample: In Example 1 of this invention, A1: a fully biodegradable cigarette (the smoking section, support section, cooling section, and filter section are all made of biodegradable materials, and a paper-based gradient density filter rod is used).

[0159] In Example 2 of this invention, A2: a fully biodegradable cigarette (the smoke-generating section, support section, cooling section, and filter section are all made of biodegradable materials, and a CA / PBAT blended modified filter rod is used).

[0160] Comparative Example 1, D1: Commercially available mainstream heated cigarettes (the smoke-generating section is made of reconstituted tobacco leaves and aluminum foil, the support section is made of polypropylene (PP) hollow tubes, the cooling section is made of PLA particles, and the filtration section is made of cellulose acetate (CA) filter rods).

[0161] The test results are shown in Table 2.

[0162] Table 2. Physical performance test results of Examples A1, A2 and Comparative Example D1

[0163] Physical performance testing experiment

[0164] The aerosol-generated products A1 and A2 in the examples and the aerosol-generated product D1 in the comparative example were tested for physical properties using a heated cigarette comprehensive test bench, and the test results are recorded in Table 3.

[0165] Table 3. Physical performance test results of Examples A1, A2 and Comparative Example D1

[0166] Conclusion: This experiment systematically measured the absorption resistance, flue gas temperature, and total particulate matter of aerosol-generating products made from three different filter rod materials, evaluating their key physical properties and filtration efficiency. The data show that the aerosol-generating products using the environmentally friendly materials of this invention, including Example A1 using a paper-based filter rod and Example A2 using a modified filter rod, exhibit core performance indicators at the same level as the aerosol-generating product D1 made from traditional cellulose acetate materials, demonstrating excellent applicability.

[0167] Specifically, although the draw resistance of Example A1 using a paper-based filter rod and Example A2 using a modified filter rod were slightly higher than that of the conventional cellulose acetate filter rod D1, the moderate increase in draw resistance helped to improve the flue gas fullness. Regarding flue gas temperature, all three remained stable at around 52°C, demonstrating that the PHA particulate cooling system used in this invention is highly effective, comparable to conventional products. The paper-based material exhibited the most significant interception of total particulate matter, demonstrating excellent filtration efficiency; the modified cellulose acetate material performed similarly to conventional cellulose acetate.

[0168] In summary, the experimental data fully demonstrate that the fully biodegradable aerosol products A1 and A2 of the present invention achieve the same filtration function as the traditional cellulose acetate aerosol product D1 while ensuring a good user experience.

[0169] Sensory evaluation experiment

[0170] Sensory evaluation experiments were conducted on Examples A1 and A2 and Comparative Example D1, using a 100-point scale. Evaluation indicators included aroma, smoke, strength, irritation, aftertaste, and evenness, with maximum scores of 25, 20, 10, 20, 15, and 10 respectively, for a total score of 100. Higher scores for each indicator indicated better vaping experience. Three batches of samples were randomly selected for each evaluation, and ten judges evaluated and scored the samples. The average score was then calculated. The sensory quality evaluation results are shown in Table 4 below.

[0171] Table 4 Sensory evaluation results of Examples A1, A2 and Comparative Example D1

[0172] Conclusion: Sensory evaluation results show that the aerosol products prepared using the fully biodegradable material system provided by this invention, including Example A1 using a paper-based filter rod and Example A2 using a modified filter rod, exhibit excellent quality in all core sensory indicators, including aroma, smoke, aftertaste, irritation, strength, and uniformity. The overall sensory scores of A1 and A2 are extremely close to those of the comparative product D1, which uses a traditional non-degradable cellulose acetate filter rod, with negligible differences.

[0173] This demonstrates that, through systematic material and structural design, this invention successfully achieves the environmental goal of biodegradability in the smoke generation, support, cooling, and filtration sections of the aerosol-generating product while simultaneously ensuring a superior suction experience. Both paper-based and modified filter rod paths achieve a balance between environmental protection and performance.

[0174] In the several embodiments provided in this application, it should be understood that the disclosed devices, apparatus and methods can be implemented in other ways.

[0175] For example, the device embodiments described above are merely illustrative. For instance, the division of units is only a logical functional division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another device, or some features may be ignored or not executed.

[0176] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0177] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0178] In this specification, references to "an embodiment" or "a specific implementation" mean that a particular feature, structure, or characteristic described in connection with that embodiment / specific implementation is included in at least one embodiment / specific implementation of the invention. Therefore, the phrase "in one embodiment / specific implementation" appearing in various places in this specification does not necessarily refer to the same embodiment / setting, but rather to potentially different embodiments. Furthermore, specific features, structures, or characteristics may be combined in one or more embodiments / settings in any suitable manner, as will be apparent to those skilled in the art from this disclosure.

[0179] Similarly, it should be understood that in the above description of exemplary embodiments / specific implementations of the invention, various features of the invention are sometimes combined in a single embodiment / specific implementation or its figures and description, with the aim of simplifying the disclosure and aiding in the understanding of one or more of the various aspects of the invention. However, except for expressly stated instructions to the contrary or obvious technical contradictions or exclusions, the method of description in this patent should not be construed as reflecting an intention that the claimed features of the invention are more than those expressly stated in each claim.

[0180] Conversely, the inventive aspect reflected in the claims lies in not all the features of a single foregoing disclosed embodiment / specification. Therefore, the claims following the detailed description are expressly incorporated herein, each claim existing independently as a separate embodiment / specification of the invention.

[0181] Furthermore, while some embodiments / specific implementations described herein include, but are not limited to, other features included in other embodiments / specific implementations, combinations of features from different embodiments / specific implementations are intended to be within the scope of the invention and form different embodiments / specific implementations, as will be understood by those skilled in the art. For example, in the following claims, embodiments / specific implementations of any claim can be used in any combination.

[0182] The terms and expressions used in this specification are for illustrative purposes and not for limitation. In using these terms and expressions, it is not intended to exclude any equivalents of the features or portions thereof shown and described, but rather to recognize that various modifications may be possible within the scope of the invention.

[0183] Therefore, it should be understood that although the invention has been specifically disclosed through preferred embodiments, exemplary embodiments and optional features, those skilled in the art may take variations or modifications of the concepts disclosed herein, and such variations and modifications are therefore considered to be within the scope of the invention as defined by the appended claims.

[0184] The specific embodiments given in this specification are examples of useful implementations of the present invention. It will be apparent to those skilled in the art that the present invention can be implemented using many variations of the devices, device components, and method steps disclosed in this specification.

[0185] The foregoing description of specific embodiments fully discloses the general features of the present invention, enabling others to easily modify and / or adapt such specific embodiments for various applications by applying knowledge within the scope of the art, without conducting excessive experimentation and without departing from the general concept of the present invention.

[0186] Therefore, based on the teachings and guidance provided herein, it is intended that such modifications and alterations be included within the meaning and scope of equivalents of the disclosed embodiments. It should be understood that the wording or terminology used herein is for descriptive purposes and is not intended to be limiting; thus, the wording or terminology in this specification will be interpreted by those skilled in the art based on the foregoing teachings and guidance.

[0187] Furthermore, the scope of the invention should not be limited to any of the exemplary embodiments described above, but only to the appended claims and their equivalents.

Claims

1. A rapidly degradable aerosol-generating product, characterized in that, The aerosol-generating product includes a biodegradable smoke-generating section, a biodegradable filter section, a biodegradable support section, and a biodegradable cooling section. The biodegradable filter section is located near the lip end of the aerosol-generating product, the biodegradable smoke-generating section is located at the distal lip end of the aerosol-generating product, and the biodegradable support section and the biodegradable cooling section are located between the biodegradable smoke-generating section and the biodegradable filter section. The aerosol-generating product is a fully biodegradable cigarette structure. The biodegradable smoke-generating section, the biodegradable support section, the biodegradable cooling section, and the biodegradable filter section are rolled together with a biodegradable wrapping material and reinforced with plant-based adhesives.

2. The aerosol-generating product according to claim 1, characterized in that, The biodegradable smoke-generating section includes a smoke-generating matrix and a smoke-generating covering, wherein the smoke-generating covering is used to wrap the outside of the smoke-generating matrix; The proportions of each component of the smoking matrix relative to the mass of the tobacco powder are as follows: Added fiber 2-4%; Adhesive 3~5%; Atomizing agent 15-30%; 100% tobacco powder; Water content: 15-35%; The added fiber includes plant fiber, wherein the mass of the plant fiber in the added fiber is 1-2% relative to the mass of the tobacco powder; The plant fibers include one or more of wood pulp fiber, cotton pulp fiber, bamboo pulp fiber, straw pulp fiber, fluff pulp fiber, and hemp pulp fiber; The binder includes one or more of starch, guar gum, and sodium carboxymethyl cellulose.

3. The aerosol-generating product according to claim 2, characterized in that, The smoke-generating covering is made of bamboo pulp paper and / or wood pulp paper; The content of bamboo pulp and / or wood pulp in the smoke-generating packaging is 95-100%; The amount of the smoke-generating coating is 30~60 g / m²; Flame-retardant coatings include one or more of natural flame retardants, water, and the binder; The dry weight coating amount of the flame retardant coating on the smoke-generating component is 3~10g / m². The natural flame retardant is one or more of sodium alginate, starch phosphate, and montmorillonite.

4. The aerosol-generating product according to claim 2, characterized in that, The biodegradable support section is a hollow paper tube; The inner wall of the hollow paper tube is one of the following: spiral tube, hollow cylinder, or honeycomb pores. The hollow paper tube is a high-density molded paper tube or a ceramic paper tube; The ceramic paper tube is prepared from the plant fiber and inorganic materials.

5. The aerosol-generating product according to claim 4, characterized in that, The high-density molded paper tube is formed by molding the plant fibers and reinforcing fibers using the adhesive. The reinforcing fibers include sisal fibers and / or kenaf fibers; The high-density molded paper tube comprises, by weight percentage: The plant fiber content is 60-80%; The reinforcing fiber content is 15-30%; The adhesive is 3-10%. The apparent density of the hollow paper tube is not less than 0.8 g / cm³; The wall thickness of the hollow paper tube is 0.5~1.5 mm.

6. The aerosol-generating product according to claim 1, characterized in that, The biodegradable cooling section includes cooling particles and a cooling coating, wherein the cooling coating encapsulates the cooling particles; The cooling particles are polyhydroxy fatty acid ester particles; The cooling particles are prepared using supercritical fluid foaming technology; The cooling particles are porous particles; The cooling covering is made of polylactic acid nonwoven fabric or paper tube; The particle size distribution of the cooling particles is 1.0~3.0 mm; The bulk density of the cooling particles is 0.30~0.50 g / cm³; The melting temperature of the cooling particles is not less than 160°C.

7. The aerosol-generating product according to claim 2, wherein the biodegradable filter section is a paper-based filter rod or a modified filter rod; The paper-based filter rod comprises, by weight percentage: The plant fiber content is 85-98%. 1-10% wet strength agent; Retention and filtration aid 0.5-3%; Environmentally friendly hydrophobic agent 0.5~2%; The wet strength agent is polyamide epichlorohydrin resin or chitosan; The retention and filtration aid is an anionic or cationic aid; the anionic aid is a polyacrylamide aid, and the cationic aid is a starch-based aid. The environmentally friendly hydrophobic agent is selected from alkyl ketene dimers and / or rosin gum. The paper-based filter rod is a filter rod with a density gradient, and the paper-based filter rod has a continuous density change or a discontinuous density change; The overall apparent density of the paper-based filter rod is 0.35 ~ 0.65 g / cm³; The density at the air inlet end of the paper-based filter rod is 0.35~0.45 g / cm³; The density of the air outlet end of the paper-based filter rod is 0.50 ~ 0.65 g / cm³.

8. The cyclic aerosol-generating product according to claim 7, characterized in that, The modified filter rod is prepared using blended modified fibers, and the components of the modified filter rod, by weight percentage, include: Cellulose acetate 59-68%, 68-77%, or 77-86%; Polybutylene adipate / terephthalate 14~23%, 23~32% or 32~41%; Compatibilizer 0.5-2%, 2-3.5%, or 3.5-5%; The compatibilizer includes maleic anhydride grafts.

9. A method for preparing an aerosol-generated product, characterized in that, The preparation method is used to prepare the aerosol-generating product as described in any one of claims 1 to 8, and the preparation method includes the following steps: Step S1: Select the corresponding biodegradable filtration section and prepare the raw materials for the biodegradable smoke generation section, the biodegradable support section, the biodegradable cooling section and the biodegradable filtration section; Step S2: Prepare the biodegradable smoke-generating section, the biodegradable support section, the biodegradable cooling section, and the biodegradable filtration section respectively; Step S3: The biodegradable smoke-generating section, the biodegradable support section, the biodegradable cooling section, and the biodegradable filter section are rolled together with a biodegradable wrapping material and reinforced with a plant-based adhesive to obtain the aerosol-generating product.

10. An aerosol generation system, characterized in that, The aerosol generation system includes the aerosol generation article as described in any one of claims 1 to 8.

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