Functional segment, aerosol-generating article and aerosol-generating system

Abstract

The application provides a functional segment applied to an aerosol generating article, the aerosol generating article comprising a substrate segment, wherein the functional segment is located on one side of a lip proximal end of the substrate segment; wherein the functional segment is of an integrated structure and comprises a composite material, the composite material comprising a base material selected from an organic filler and an additive selected from an inorganic filler. The application also provides an aerosol generating article comprising the functional segment, and an aerosol generating system comprising the aerosol generating article.

Description

Technical Field

[0001] This invention relates to the field of smoke-generating products, and more particularly to a functional segment, an aerosol-generating product, and an aerosol-generating system. Background Technology

[0002] Smoking products include aerosol-generating products that form aerosols through heating without combustion. Existing heated non-combustible aerosol-generating products typically include a matrix section (i.e., a medium section) that volatilizes to generate aerosols upon heating and a functional section. The functional section includes a support section, whose main purpose is to support the cigarette structure and act as an aerosol channel. As the high-temperature aerosol passes through, it exchanges heat with the cigarette, causing the aerosol temperature to drop rapidly so that it reaches a suitable temperature when it enters the smoker's mouth.

[0003] Currently, the materials commonly used in the support section have problems such as poor stability at high temperatures and poor cooling effect, which leads to a decrease in the material's support effect, a decrease in the effect of regulating flue gas temperature, and safety hazards. Summary of the Invention

[0004] In view of this, the main objective of the present invention is to provide a functional section, an aerosol generating product, and an aerosol generating system, which are designed to specifically adjust and improve the temperature of the passing aerosol so that the temperature of the aerosol can be reduced to a temperature suitable for the human body. At the same time, it also facilitates the flavoring design of the aerosol generating product.

[0005] To achieve the above objectives, the present invention provides the following technical solution.

[0006] A first aspect of the present invention provides a functional segment applied to an aerosol generating article, the aerosol generating article including a matrix segment, wherein the functional segment is located on one side of the matrix segment near the lip end; wherein the functional segment is an integral structure and includes a composite material, the composite material including a substrate and an additive, the substrate being selected from organic fillers and the additives being selected from inorganic fillers.

[0007] In some embodiments, the composite material further includes a functional material selected from one or more of atomizing agents, plasticizers, binders, and fragrances. In some specific embodiments, the functional material is selected from atomizing agents.

[0008] In some embodiments, based on the total weight of the composite material, the composite material comprises 50 wt% to 90 wt% of the substrate, 1 wt% to 30 wt% of the additives, and less than or equal to 20 wt% of the functional material.

[0009] In some embodiments, the thermal conductivity of the composite material is from 0.05 W / mK to 20 W / mK, preferably from 0.2 W / mK to 1.2 W / mK.

[0010] In some embodiments, the substrate is selected from one or more of plant extracts, natural polymers, and synthetic polymers; preferably, the substrate is selected from one or more of cellulose, starch, chitosan, lignocellulose, hemp fiber, coconut fiber, protein-based materials, polypropylene, polylactic acid, polyvinyl alcohol, polytetrafluoroethylene, polyhydroxyalkanoates, polycaprolactone, natural rubber, linear low-density polyethylene, high-density polyethylene, and polyimide; more preferably, the substrate is selected from one or more of modified starch, amylopectin, polylactic acid, polyvinyl alcohol, and polypropylene.

[0011] In some embodiments, the additive is selected from one or more of the following: elemental metals, such as Ag, Cu, Au, Al, Zn, Fe, Sn, Ti, Mg; metal ion additives, such as Cu-containing... 2+ Zn 2+ Al 3+ Na + Mg 2+ Li + K + The additives are: oxides or nitrides, such as silicon dioxide, aluminum oxide, aluminum nitride, boron nitride, magnesium oxide, and silicon nitride; preferably, the additives are selected from one or more of the following: copper microparticles; aluminum ion-containing additives, such as aluminum chloride, aluminum stearate, and aluminum hydroxide; silver nanoparticles; zinc ion-containing additives, such as zinc oxide, zinc stearate, and zinc sulfate; and copper ion-containing additives, such as cuprous oxide and copper phthalocyanine.

[0012] In some embodiments, the atomizing agent is selected from one or more of propylene glycol, glycerol, 1,3-butanediol, tetraethylene glycol, triacetin, triethyl citrate, a mixture of diacetin, methyl benzoate, and triglyceride; preferably, the atomizing agent is selected from one or more of propylene glycol, glycerol, 1,3-butanediol, and tetraethylene glycol; more preferably, the atomizing agent is selected from one or more of propylene glycol and glycerol.

[0013] In some embodiments, the plasticizer is selected from one or more of starch, small molecule sugars, and alcohols.

[0014] In some embodiments, the adhesive is selected from one or more of sodium carboxymethyl cellulose, carrageenan, xanthan gum, guar gum, agar, gelatin, sodium alginate, locust bean gum, and konjac gum.

[0015] In some embodiments, the fragrance is selected from one or more of the following: plant extracts, solanone, furanone, 2-acetylpyrazine, damasne, β-ionone, levulinic acid, menthol, menthone, menthone glyceryl acetal, peppermint oil, peppermint oil, ethyl butyrate, ethyl acetate, ethyl isovalerate, isoamyl acetate, peachaldehyde, methyl cinnamate, and methyl salicylate.

[0016] In some implementations, the fill density of the functional segments is 0.1 g / mm². 3 Up to 0.8 g / mm 3 The filling density of a functional segment is the ratio of the mass of the functional segment to its volume.

[0017] A second aspect of the present invention provides an aerosol-generating article comprising:

[0018] The matrix segment is used to generate aerosols, and its two ends along the axial direction are the distal lip end and the proximal lip end, respectively.

[0019] The functional segment described in the first aspect above is located near the lip; and

[0020] The encapsulation layer is wrapped around the circumferential surfaces of the matrix segment and the functional segment.

[0021] A third aspect of the present invention provides an aerosol generation system, comprising:

[0022] An aerosol generating apparatus, including a heating component; and

[0023] The aerosol-generating article described in the second aspect above, wherein the matrix segment generates aerosol under the heating action of the heating component.

[0024] In this invention, the functional segment is an integrated structure with a certain strength and resistance to deformation, providing excellent support. Furthermore, the overall thermal conductivity of this functional component is controllable through a specific blending ratio of organic fillers (e.g., bio-based materials / polymers), inorganic fillers (e.g., metallic materials / inorganic non-metallic materials), and optional functional materials (e.g., atomizing agents, binders, fragrances, etc.). This allows for targeted formulation based on aerosols at different temperature ranges, achieving effective cooling and transport of the aerosol. This results in effects such as improved palatability, aroma retention, and reduced aerosol condensation, ensuring the aerosol temperature meets the comfort requirements of the human oral cavity and enhancing the user experience. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of an aerosol-generating article according to an embodiment of this application.

[0026] Figure 2 This is a schematic diagram of the structure of an aerosol-generating article according to another embodiment of this application.

[0027] Figure 3 This is a schematic diagram of the structure of an aerosol-generating article according to another embodiment of this application.

[0028] Figure 4 This is a schematic diagram of the structure of an aerosol-generating article according to another embodiment of this application.

[0029] Figure 5 This is a structural schematic diagram of a matrix segment or functional segment in an embodiment of this application, along a cross section perpendicular to the length direction.

[0030] Figure 6 This is a structural schematic diagram of a matrix segment or functional segment in another embodiment of this application, along a cross section perpendicular to the length direction.

[0031] Figure 7 This is a structural schematic diagram of a matrix segment or functional segment in a cross section perpendicular to the length direction, according to another embodiment of this application. Detailed Implementation

[0032] The following detailed description discusses exemplary embodiments. The specific embodiments included herein should not be construed as limiting the invention. Furthermore, while specific language may be used to describe features, actions, and / or structures in the embodiments described herein, the claims are not limited to the described features, actions, and / or structures. Those skilled in the art will understand that other embodiments, including improvements, are within the spirit and scope of the invention.

[0033] Throughout this specification, unless otherwise specified, the terminology used herein should be understood as having the meaning as commonly used in the art. Therefore, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0034] It should be noted that, in the embodiments of the present invention, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a method or apparatus that includes a list of elements includes not only the elements expressly stated, but also other elements not expressly listed, or elements inherent to implementing the method or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other related elements in the method or apparatus that includes that element.

[0035] When using existing heated non-combustible aerosol products, the aerosol reaches a high temperature after heating and activation, typically between 150℃ and 230℃. Therefore, a functional section (i.e., a support section) is needed to rapidly reduce the aerosol temperature so that it reaches a suitable temperature upon entering the user's mouth. Currently, support sections commonly use hollow acetate structures, corrugated paper tubes, fiber paper, and hollow polypropylene tubes. However, hollow acetate structures, corrugated paper tubes, and fiber paper release acidic or papery odors when near high-temperature aerosols, resulting in poor cooling effects and poor aroma carrying and retention capabilities, which is detrimental to the consistency of the smoke. Hollow acetate structures and hollow polypropylene tubes soften partially at high temperatures, leading to a decrease in the later support effect and posing a microplastic safety hazard. Furthermore, the thermal conductivity of these materials has a small fluctuation range, making it impossible to effectively control the smoke temperature according to requirements.

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0037] This invention provides an aerosol-generating product, referenced Figure 1 The aerosol-generated product includes a matrix segment 20, a functional segment 30, and a coating layer (not shown in the figure), wherein the functional segment 30 is disposed at one end of the matrix segment 20 along the length direction, and the coating layer is wrapped around the functional segment and the matrix segment in the circumferential direction.

[0038] This aerosol-generated product is suitable for suction by heating without combustion.

[0039] The matrix segment 20 is used to generate aerosols. Specifically, the aerosol generating article is used in conjunction with an aerosol generating device, which includes a heating component and a power supply component. The power supply component provides electrical energy to the heating component, which converts the electrical energy into other forms of energy and applies them to the matrix segment 20, thereby heating the matrix segment 20 to generate aerosols.

[0040] There are various heating methods for the heating components. Exemplarily, heating methods include center heating and peripheral heating. Center heating refers to the heating component being inserted into the matrix segment 20 to bake and heat the matrix segment 20 from the inside out. Peripheral heating methods are also varied. Exemplarily, heating methods include center heating and peripheral heating. Center heating refers to the heating component being positioned around the aerosol-generating product to bake and heat the matrix segment 20 from the outside in. These heating methods can specifically include resistance heating, electromagnetic induction heating, infrared heating, microwave heating, laser heating, air heating, electric field heating, carbon source heating, plasma heating, etc., which are not specifically limited herein.

[0041] The matrix segment 20 has two axial ends, a proximal lip end 20a and a distal lip end 20b. The proximal lip end 20a refers to the end of the matrix segment 20 closest to the user's lips when using the aerosol-generating article, and the distal lip end 20b refers to the end of the matrix segment 20 furthest from the user's lips when using the aerosol-generating article. In this application, the matrix segment is also referred to as the aerosol-generating matrix.

[0042] In some embodiments, the axial dimension of the matrix segment 20 is 17 mm to 28 mm, for example, it can be 18 mm, 19 mm, 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, 26 mm, 27 mm or 28 mm, etc., but is not limited thereto.

[0043] See Figure 1 and Figure 2 The functional segment 30 is disposed near the lip end 20a of the matrix segment 20. The functional segment 30 includes at least one of a filter segment 31, a support segment 32, and a cooling segment 33. In this application, the functional segment 30 specifically refers to at least one of the support segment 32 and the cooling segment 33, which is used to reduce the temperature of the aerosol while supporting the structure, so as to ensure that the temperature of the aerosol reaching the user's oral cavity is suitable and to avoid the problem of "burning the mouth".

[0044] In some implementations, such as Figure 2 The functional section 30 includes a filter section 31, a support section 32, and a cooling section 33. The support section 32 is located at one end of the matrix section 20 along its axial direction, one end of the cooling section 33 is located at the end of the support section 32 away from the matrix section 20 along its axial direction, and the filter section 31 is located at the other end of the cooling section 33.

[0045] The support section 32 can connect and support the matrix section 20 and the cooling section 33 at both ends. The cooling section 33 is used to reduce the temperature of the aerosol so that the temperature of the aerosol flowing out of the filter section 31 is suitable and avoids the problem of the aerosol being "hot to the mouth".

[0046] Of course, the positions of the support section 32 and the cooling section 33 can also be interchanged, that is, the cooling section 33 is connected to one end of the matrix section 20 along the axis, and the two ends of the support section 32 are connected to the other end of the cooling section 33 and the filter section 31, respectively.

[0047] The support section and cooling section of the present invention can be an integral structure (which may be referred to as a cooling support section) and include composite materials. The composite material of the present invention includes a substrate and additives, wherein the substrate is selected from organic fillers (such as bio-based materials and / or polymeric materials), and the additives are selected from inorganic fillers (such as metallic materials and inorganic non-metallic materials).

[0048] In this invention, by using organic fillers (such as bio-based materials and / or polymeric materials) as the base material, the composite material has high strength and toughness, which is beneficial for the cooling support section to have a better support effect. By adding inorganic fillers such as those selected from metallic materials and / or inorganic non-metallic materials as additives, the thermal conductivity of the composite material can be adjusted, the heat dissipation performance of the material can be enhanced, the mechanical strength and heat resistance of the material can be improved, the heat distribution can be optimized, and local overheating can be avoided. This allows the aerosol to exchange sufficient heat with the composite material when passing through the cooling support section, and the temperature drops rapidly. After passing through the filtration section, the temperature is reduced to a temperature suitable for the human oral cavity.

[0049] Furthermore, the composite material also includes functional materials, wherein the functional materials are selected from one or more of atomizing agents, plasticizers, binders, and fragrances, preferably selected from atomizing agents. In this invention, by supplementing with functional materials, the aerosol can be endowed with a specific aroma, enhancing the inhalation experience, and can also play functions such as skeletal support, filling, pore creation, high heat transfer, fragrance carrying, catalysis, and color change in the functional segment, thereby further optimizing the performance of the functional segment.

[0050] Furthermore, based on the total weight of the composite material, the composite material includes a matrix component of 50 wt% to 90 wt%, such as 55 wt%, 58 wt%, 60 wt%, 62 wt%, 65 wt%, 68 wt%, 70 wt%, 72 wt%, 75 wt%, 78 wt%, 80 wt%, 82 wt%, 85 wt%, or 90 wt%. This matrix component is an organic filler, such as plant extracts, natural polymers, and synthetic polymers, such as modified starch, amylopectin, polylactic acid, polyvinyl alcohol, polypropylene, but not limited to these.

[0051] Furthermore, based on the weight of the composite material, the composite material includes 1 wt% to 30 wt% of additives, such as 5 wt%, 8 wt%, 10 wt%, 12 wt%, 15 wt%, 18 wt%, 20 wt%, 22 wt%, 25 wt%, 28 wt%, and 30 wt% additives. These additives are inorganic fillers, such as metallic materials and inorganic non-metallic materials, such as copper microparticles; aluminum ion-containing additives, such as aluminum chloride, aluminum stearate, and aluminum hydroxide; silver nanoparticles; zinc ion-containing additives, such as zinc oxide, zinc stearate, and zinc sulfate; copper ion-containing additives, such as cuprous oxide and copper phthalocyanine; silicon dioxide; aluminum oxide; and calcium carbonate, but are not limited thereto.

[0052] Furthermore, based on the weight of the composite material, the composite material includes less than or equal to 20 wt% of functional materials, such as 1 wt%, 3 wt%, 5 wt%, 8 wt%, 10 wt%, 12 wt%, 15 wt%, 18 wt%, and 20 wt% of functional materials, thereby giving the functional segment additional functionality.

[0053] It should be understood that the content of each component in the process-in-process varies by 20% based on the central values ​​of the above components.

[0054] Therefore, by adjusting the proportions of the substrate, additives, and functional materials in this invention, the thermal conductivity of the composite material can be regulated, thereby allowing for targeted adjustment and improvement of the aerosol temperature. This ensures that the aerosol temperature passing through the cooling support section can be effectively controlled between 40°C and 65°C, meeting the comfort temperature requirements of the human oral cavity and enhancing the user experience.

[0055] In some embodiments, the thermal conductivity of the composite material is from 0.05 W / mK to 20 W / mK, preferably from 0.2 W / mK to 1.2 W / mK, such as 0.05 W / mK, 0.2 W / mK, 0.25 W / mK, 0.3 W / mK, 0.35 W / mK, 0.4 W / mK, 0.45 W / mK, 0.5 W / mK, 0.55 W / mK, 0.6 W / mK, 0.65 W / mK, 0.7 W / mK, 0.75 W / mK, 0.8 W / mK, 0.85 W / mK, 0.9 W / mK, 0.95 W / mK, 1 W / mK, 1.2 W / mK, 2 W / mK, 5 W / mK, 10 W / mK, 15 W / mK, and 20 W / mK.

[0056] The term "thermal conductivity," also known as thermal conductivity coefficient or thermal conductivity, is a physical quantity that represents the ability of a material to conduct heat. The higher the thermal conductivity, the better the thermal conductivity.

[0057] The composite material within this thermal conductivity range can efficiently exchange heat with the passing aerosol while ensuring that the heat is not diffused too quickly. The temperature of the aerosol passing through this cooling support section can be effectively controlled between 40℃ and 65℃.

[0058] In some embodiments, the thermal conductivity of the composite material is between 0.2 W / mK and 1.2 W / mK, which allows the composite material to exchange heat with the passing aerosol more efficiently, while preventing the heat from dissipating too quickly. This results in the aerosol temperature passing through the cooling support section being palatable and reducing aerosol condensation.

[0059] In some embodiments, the thermal conductivity of the composite material is 0.05 W / mK to 0.2 W / mK, thus the composite material has good thermal insulation effect and can be applied to situations that are usually used for heat preservation or require slow heat dissipation, such as non-combustible products heated by microwave heating or other heating methods. Such products have low temperature requirements, and the aerosol temperature after activation is slightly low, so low heat dissipation functional segment extrusion products can be used.

[0060] In some embodiments, the thermal conductivity of the composite material is between 1.2 W / mK and 20 W / mK. At this point, the composite material can be used for heat-resistant non-combustible products that require extremely high preheating time for central or peripheral heating. Such products often shorten the preheating time by increasing the preheating temperature, which in turn increases the aerosol temperature and has a high heat conversion requirement during the functional stage.

[0061] Further, the substrate is selected from one or more of cellulose, starch, chitosan, lignocellulose, hemp fiber, coconut fiber, protein-based materials, polypropylene, polylactic acid, polyvinyl alcohol, polytetrafluoroethylene, polyhydroxyalkanoates, polycaprolactone, natural rubber, linear low-density polyethylene, high-density polyethylene, and polyimide. Optionally, the substrate is selected from one or more of modified starch, amylopectin, polylactic acid, polyvinyl alcohol, and polypropylene.

[0062] By using the above-mentioned materials as the base material, the composite material has a certain strength and resistance to deformation, thus enabling the cooling support section to have a good support effect.

[0063] In some embodiments, the additive is selected from one or more of elemental metals, metal ion additives, oxides or nitrides, and inorganic non-metallic materials.

[0064] As metallic elements, Ag, Cu (such as copper particles with a particle size of 1 to 50 μm), Au, Al, Zn, Fe, Sn, Ti, and Mg may be mentioned, but are not limited to these.

[0065] As a metal ion additive, Cu-containing compounds can be mentioned. + Cu 2+ Zn 2+ Al 3+ Na + Mg 2+ Li + K + Additives. For example, additives containing aluminum ions such as aluminum chloride (AlCl3) and aluminum stearate (Al(C)). 17 H 35 COO)3), aluminum hydroxide (Al(OH)3), etc.; silver nanoparticles, zinc ion-containing additives such as zinc oxide (ZnO), zinc stearate (Zn(C)3), etc. 17 H 35 Additives containing copper ions include: COO2), zinc sulfate (ZnSO4), etc.; cuprous oxide (Cu2O), copper phthalocyanine (C2O), etc. 32 H 16 It may contain one or more of CuN8, but is not limited to these.

[0066] As oxides or nitrides, silicon dioxide, aluminum oxide, aluminum nitride, boron nitride, magnesium oxide, and silicon nitride may be mentioned, but are not limited to these.

[0067] As an inorganic non-metallic material, one or more combinations of heavy calcium carbonate, light calcium carbonate, zeolite, attapulgite, talc, and diatomaceous earth can be mentioned. This provides skeletal support for the organic substrate portion. Simultaneously, these materials possess micropores, which can increase the porosity of the cooling support section, thereby improving the aerosol release rate.

[0068] In this invention, the composite material may include an atomizing agent. The addition of an atomizing agent can reduce the viscosity of the aerosol, improve the flowability of the aerosol, making it easier to pass through the support section and the cooling section, and also enhance the fineness of the aerosol. As atomizing agents, one or more combinations of monohydric alcohols (such as menthol); polyhydric alcohols (such as propylene glycol, glycerol, triethylene glycol, 1,3-butanediol, and tetraethylene glycol); esters of polyhydric alcohols (such as triacetin, triethyl citrate, mixtures of diacetins, triethyl citrate, methyl benzoate, and triglyceride); monocarboxylic acids; dicarboxylic acids; polycarboxylic acids (such as lauric acid and myristic acid) or aliphatic esters of polycarboxylic acids (such as dimethyl dodecanoate, dimethyl tetradecanoate, erythritol, 1,3-butanediol, tetraethylene glycol, triethyl citrate, propylene carbonate, ethyl laurate, triacetin, mesoerythritol, mixtures of diacetins, diethyl octanoate, triethyl citrate, methyl benzoate, phenylacetic acid, ethyl vanillate, triglyceride, and lauryl acetate) may be mentioned.

[0069] Optionally, the atomizing agent may be one or more selected from propylene glycol, glycerol, 1,3-butanediol, tetraethylene glycol, triacetin, triethyl citrate, a mixture of diacetins, methyl benzoate, and triglyceride. In some embodiments, the atomizing agent may be one or more selected from propylene glycol, glycerol, 1,3-butanediol, and tetraethylene glycol. Optionally, the atomizing agent is selected from one or more selected from propylene glycol and glycerol.

[0070] In some embodiments, the composite material may include a plasticizer selected from one or more of starch, small-molecule sugars, and alcohols. The addition of a plasticizer can improve the flexibility and processability of the composite material, ensuring the smooth progress of the extrusion process.

[0071] Starch as a plasticizer can refer to natural starches such as corn starch, potato starch, wheat starch, and mung bean starch; modified starches such as hydroxypropyl starch, pregelatinized starch, and amylopectin; and starch derivatives such as cyclodextrin and maltodextrin, but are not limited to these.

[0072] Small molecule sugars used as plasticizers include monosaccharides such as glucose, fructose, and galactose; disaccharides such as sucrose, lactose, and maltose; and some oligosaccharides such as galactooligosaccharides, fructooligosaccharides, and trehalose; as well as functional small molecule sugars such as ribose and xylose, but are not limited to these.

[0073] Alcohols used as plasticizers include monohydric alcohols such as methanol and ethanol; polyhydric alcohols such as ethylene glycol, glycerol, and polyethylene glycol; aromatic alcohols such as benzyl alcohol and menthol; and long-chain fatty alcohols such as hexadecyl alcohol and octadecyl alcohol, but are not limited to these.

[0074] In some embodiments, the composite material may include an adhesive selected from one or more of sodium carboxymethyl cellulose, carrageenan, xanthan gum, guar gum, agar, gelatin, sodium alginate, locust bean gum, and konjac gum. The addition of the adhesive can improve the formability and structural stability of the composite material, reducing the probability of deformation and cracking of functional segments under high-temperature conditions.

[0075] In some embodiments, the composite material may include a fragrance selected from one or more of the following: plant components, solanone, furanone, 2-acetylpyrazine, damasne, β-ionone, levulinic acid, menthol, menthone, menthone glyceryl acetal, peppermint oil, peppermint oil, ethyl butyrate, ethyl acetate, ethyl isovalerate, isoamyl acetate, peachaldehyde, methyl cinnamate, and methyl salicylate. The fragrance is used to provide a characteristic aroma, and its addition allows the composite material to achieve cooling while imparting a specific aroma to the aerosol, enhancing the user's inhalation experience.

[0076] In this invention, the filling density of the functional sections, especially the cooling support section, is 0.1 g / mm². 3 Up to 0.8 g / mm 3 Such as 0.1g / mm 3 0.2g / mm 3 0.4g / mm 3 0.5g / mm 3 0.6g / mm 3 0.8g / mm 3 The fill density of a functional segment is the ratio of its mass to its volume.

[0077] A filling density within this range is more reasonable. On the one hand, it avoids insufficient compactness of the functional sections due to excessively low filling density, which would affect heat transfer, reduce the overall thermal conductivity of the functional sections, and result in insufficient support, making the matrix sections prone to deformation or collapse. On the other hand, it avoids hindering heat dissipation to the outside due to excessively high filling density, which would instead provide good insulation, prevent the problem of hot flue gas, and increase manufacturing costs and cutting difficulty.

[0078] In some implementations, reference Figure 3 The functional section 30 includes a pre-plug section 10, a filter section 31, and a cooling section 33. The pre-plug section 10 is located at the other end of the matrix section 20 along its length. The pre-plug section 10 can improve the problem of matrix section 20 falling off. In addition, the pre-plug section 10 can adsorb the aerosol that condenses and flows back after the aerosol generation product stops pumping, thereby avoiding the problem of aerosol condensation flowing downwards and causing internal contamination of the aerosol generation device, making it difficult to clean, and the problem of cross-contamination of flavors that may occur when pumping different flavored aerosol generation products.

[0079] This article does not impose any special restrictions on the material of the fore-plug section; any material commonly used in this field can be used.

[0080] In some implementations, reference Figure 4 The functional section 30 includes a front plug section 10, a filter section 31, a support section 32, and a cooling section 33. The front plug section 10 is located at the distal lip end 20b of the matrix section 20, the support section 32 is located at the proximal lip end 20a of the matrix section 20, and the cooling section 33 is located at one end of the support section 32 axially away from the matrix section 20. The filter section 31 is located at the end of the cooling section 33 axially away from the support section 32.

[0081] In this invention, functional segment 30 has an open structure at both ends along the axial direction, such as... Figure 5 As shown, it has numerous micropores, which are interconnected to form micro-channels. It can be understood that after the functional segment is formed, the gaps between its raw material components constitute micropores. These micropores are irregular and belong to the category of pores in a microscopic sense. The size of the micropores is determined by the gaps between the powder components after the powder is formed.

[0082] During the aerosol generation process, the generated aerosols can enter the microchannels of the functional section. Under the negative pressure generated by suction, the aerosols are transported to the user for inhalation through the microchannels. In addition, as the aerosols flow through the microchannels, it also helps the functional section capture some substances in the aerosols and has a cooling effect.

[0083] In another exemplary embodiment, such as Figure 6 and Figure 7 As shown, the functional segment and / or matrix segment include micropores and at least one airway pore, which extends through at least one end of the structural segment along its length. The airway pore helps improve the air permeability of the functional segment and reduce suction resistance.

[0084] It should be noted that the airway pores mentioned above are pores in a macroscopic sense, while micropores are pores in a microscopic sense. The cross-sectional area of ​​an airway pore is much larger than that of a micropore, for example, at least 20 times larger.

[0085] In some embodiments, the cross-sectional area of ​​the airway pores is 20 to 60,000 times that of the micropores. This is beneficial for balancing the structural stability of the structural segment and the aerosol release rate. In some embodiments, the cross-sectional area of ​​the airway pores is 100 to 40,000 times that of the micropores.

[0086] The micro-airways are connected to the airway pores. Since the micro-airways are formed by the interconnection of micropores, the micropores are also connected to the airway pores. Furthermore, it can be understood that the interconnection between micropores can be partial, with some micropores not connected, or all micropores can be interconnected. A portion of the aerosol in the micro-airways can also be collected at the airway pores and delivered to the user's mouth under the negative pressure of suction. The airway pores help reduce the suction resistance for the user, improving the user experience. It should be noted that suction resistance is positively correlated with the flow resistance of the aerosol; the lower the flow resistance of the aerosol, the lower the perceived suction resistance, and vice versa.

[0087] In some implementations, the airway openings extend through opposite ends of the functional segment and / or matrix segment along their length. This helps to reduce suction resistance for the user.

[0088] In one implementation, such as Figure 6 As shown, the functional segment and / or matrix segment have an airway opening inside. This helps to reduce the suction resistance for the user.

[0089] In some implementations, such as Figure 7 As shown, the functional segment and / or matrix segment have multiple airway pores inside. This is more conducive to reducing the suction resistance for the user.

[0090] In some embodiments, the cross-sectional shape of the airway opening is circular, elliptical, racetrack-shaped, fan-shaped, or polygonal in a plane perpendicular to the length direction of the functional segment and / or matrix segment.

[0091] In some embodiments, the cross-sectional area of ​​the airway orifice is 0.0019 mm. 2 -30mm 2 Alternatively, the hydraulic diameter of the air passage orifice is 0.05 mm to 6 mm. In this application, the hydraulic diameter refers to the ratio of four times the cross-sectional area of ​​the flow passage to the perimeter. In some preferred embodiments, the cross-sectional area of ​​the air passage orifice is 0.007 mm². 2 ~7.1mm 2 (square millimeters). In some preferred embodiments, the hydraulic diameter of the airway orifice is 0.1 mm to 3 mm. This facilitates more uniform aerosol release and higher utilization.

[0092] In some embodiments, the wall thickness of the spacer between adjacent air passages is 10 μm to 800 μm. This facilitates heat penetration and diffusion, resulting in higher heat transfer efficiency, while also maintaining structural strength.

[0093] In some specific embodiments, the cooling support section includes at least one central airflow channel and at least one lateral airflow channel running through it axially. During suction, aerosols generated by heating components (not shown) are drawn in through the air inlet along the suction airflow. Part of the air flows downwards along the lateral airflow channel to the bottom of the cooling support section where it intersects with the matrix section, extracting the aerosols generated in the matrix section before entering the central airflow channel. The remaining air enters through the central airflow channel in the cooling support section and flows upwards, creating a negative pressure above the central airflow channel to extract the aerosols generated in the matrix section. The extracted aerosols then pass through a filter section and enter the patient's mouth. Due to its structural design, the gas flow rate is slowed when passing through the cooling support section, resulting in a rapid temperature drop after sufficient heat exchange with the matrix of the cooling support section. After passing through the filter section, the temperature is reduced to a comfortable oral temperature (40℃~65℃).

[0094] In some implementations, the cross-sections of the central airway and the side airway can be configured as various shapes such as circular, polygonal, sawtooth, pentagonal, elliptical, spiral, honeycomb, etc., which can cool and transport the flue gas.

[0095] In some embodiments, the central airway has a circular cross-section with an aperture of 3mm to 6mm. For example, 3mm, 3.2mm, 3.4mm, 3.6mm, 3.8mm, 4mm, 4.3mm, 4.6mm, 4.9mm, 5mm, 5.4mm, 5.5mm, 5.8mm, 6mm, etc.

[0096] In some embodiments, the central airway has a trapezoidal cross-section with a side length of 0.1 mm to 5 mm. For example, 0.1 mm, 0.5 mm, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, etc.

[0097] In some embodiments, the cooling support section may include one central air duct and 2 to 40 side-flow air ducts (such as 2, 3, 4, 5, 6, 10, 15, 16, 20, 25, 28, 30, 36, 40). In one specific embodiment, a longitudinally penetrating central air duct is provided at the center of the cooling support section, and the central air duct has a circular cross-section with a diameter of 3.0 mm. The cooling support section also has 36 side-flow air ducts, and the cross-section of the side-flow air ducts is approximately trapezoidal, but not limited to this.

[0098] In some implementations, the axial dimension of the cooling support section is 18mm to 24mm, for example, it can be 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm, etc.

[0099] The axial dimension of the cooling support section is more suitable within this range. On the one hand, the cooling support section has a certain axial dimension, which makes it easier for it to play a cooling and support role. On the other hand, it ensures that the axial dimension of the aerosol product is not too long, and the suction resistance is not too great when the user inhales, which helps to ensure the user's inhalation experience.

[0100] In some embodiments, the cooling support section is an integral structure formed by extrusion molding. Extrusion molding refers to a processing method in which a raw material composition is added to an extruder, and the material is heated and plasticized by the action between the extruder barrel and the screw, and is pushed forward by the screw, continuously passing through the die head to form products or semi-finished products of various cross sections. Here, the composite material is prepared using an extrusion process, enabling continuous production with advantages such as high efficiency, low cost, and suitability for large-scale manufacturing. Furthermore, the segmented temperature control effectively prevents composite material degradation, ensuring the stability of the extruded product's performance. For example, the cooling support section can be a single piece or a multi-segment combination. For cigarettes with low (<45℃) or high (>85℃) flue gas temperatures, a single piece can be selected, using composite materials with a thermal conductivity of 0.2-0.5 W / mK or above 0.8 W / mK. When flue gas temperature needs adjustment (e.g., 50-85℃) and the support section is long, a multi-segment design can be chosen, with the front and rear sections using composite materials with different thermal conductivity ranges to achieve cooling and heat transfer without causing excessive condensation and trapping of the flue gas due to rapid cooling. In addition, using an extrusion process to prepare composite materials allows for molding and processing at suitable temperatures and pressures, resulting in materials with high strength and toughness. Adjusting the extrusion pressure can also change the material's density; for example, high temperature and high pressure can form a dense, compact columnar structure, thus altering its mass and heat transfer efficiency.

[0101] The filter section 31 of this invention is used to filter aerosols, removing large particles and unwanted impurities. The filtered aerosol then flows through the functional section for cooling. In other words, the aerosol generated in the heating matrix section is cooled and filtered sequentially through the cooling support section and the filter section before being drawn in by the user.

[0102] The filter material used in filter section 31 includes, but is not limited to, one or more of the following materials: polyethylene (PE), polylactic acid (PLA), polybutylene adipate terephthalate (PBAT), polypropylene (PP), cellulose acetate, and cellulose acrylic.

[0103] The encapsulation layer of this invention encapsulates the circumferential portions of the matrix segment and the functional segment. This improves the reliability of the connection between the matrix segment and the functional segment.

[0104] The coating layer has a certain degree of hardness, which can protect the matrix segment and functional segment to a certain extent, reduce their surface area directly exposed to the outside world, and thus reduce the chance of them becoming damp and deteriorating due to contact with air.

[0105] The specific material of the wrapping layer is not limited, and may be one or more of the following: fiber paper, metal foil, metal foil composite fiber paper, polyethylene (PE), polyethylene composite fiber paper, PBAT (Poly butylene adipate-co-terephthalate).

[0106] It should be noted that when the coating layer covers the entire circumferential outer surface of the filter section, the user can directly put the coating layer in their mouth to inhale the aerosol. When the coating layer covers part of the circumferential outer surface of the filter section, the user can directly put the part of the filter section exposed outside the coating layer in their mouth to inhale the aerosol. Of course, the user can also attach a mouthpiece to the filter section and inhale the aerosol through the mouthpiece.

[0107] It should be noted that the encapsulation layer can be a single layer, meaning that a single encapsulation layer can simultaneously encapsulate both the matrix segment and the functional segment.

[0108] Of course, the coating layer can also be multi-layered. Any segment of the matrix segment and the functional segment can be wrapped by at least one outer coating layer to obtain a multi-segment structure; or, two segments of the matrix segment and the functional segment can be wrapped by at least one coating layer to obtain a multi-segment structure, and the multi-segment structure can be wrapped by one or more coating layers to obtain an aerosol-generated product.

[0109] The present invention also provides an aerosol generation system. The aerosol generation system includes an aerosol generation apparatus having a heating component and the aerosol generation article described above. The matrix section of the aerosol generation article includes an aerosol generation matrix. Specifically, the heating component heats and atomizes the aerosol generation matrix to generate aerosols.

[0110] The present invention does not limit the specific method by which the heating component generates a matrix from heated aerosols.

[0111] In some embodiments, the heating component is a resistance / electromagnetic heating wire / plate / needle / tube. The heating component is attached to the aerosol generating article. After the heating component is turned on, it transfers heat to the aerosol generating matrix, causing the aerosol generating matrix to generate aerosol.

[0112] In some embodiments, the heating component is an infrared / microwave / laser heating device, which irradiates the aerosol generating article with high-energy infrared / microwave / laser light, thereby raising the temperature of the aerosol generating matrix and causing the aerosol generating matrix to generate aerosols.

[0113] The present invention does not limit the specific arrangement of the heating element. It can be arranged on the outside of the outer wrapping layer; or it can be inserted into the aerosol generating matrix and in contact with the aerosol generating matrix.

[0114] It is understandable that the aerosol generating product is loaded into the aerosol generating device so that the heating component can heat the aerosol generating product. After the aerosol generating matrix in the aerosol generating product is exhausted, it is removed from the aerosol generating device and replaced with a new aerosol generating product.

[0115] Example

[0116] The present invention will be described in more detail below through embodiments. It should be understood that the embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. Where specific techniques or conditions are not specified in the embodiments, they shall be performed in accordance with the techniques or conditions described in the literature in the art or in accordance with the product instructions. All raw materials used in the embodiments are commercially available.

[0117] Test methods

[0118] Methods for testing thermal conductivity

[0119] Test equipment: HotDisk ATC-557 thermal constant analyzer

[0120] Test conditions: Ambient temperature: 20±5℃; Ambient humidity: <80RH%;

[0121] Sample preparation: After grinding into powder, maintain a pressure of 5MPa for 20s to obtain dense and flat round blocks.

[0122] Test method: 1. Select the probe according to the sample and place the probe in the middle of the sample as required; 2. Set the parameters; 3. Let it stand for 15-30 minutes before starting the test.

[0123] Press into round discs for testing; test each sample twice.

[0124] Hardness testing methods

[0125] Testing equipment: Cigarette filter rod comprehensive testing stand

[0126] Test method: Under environmental conditions of 22±2℃ and 60±5%, the cigarette filter rod comprehensive test bench (the instrument is calibrated before each use) is used for measurement. The hardness test module is turned on, and 10 finished media rods are tested each time. Three sets of tests are carried out, and a total of 30 samples are tested. Finally, the average hardness is calculated. The results are expressed as a percentage.

[0127] Methods for testing aerosol temperature

[0128] 1. Temperature T1 of aerosol generated in the matrix section: Test equipment: X500E-L fume extractor

[0129] Test method: The above-mentioned aerosol generating product and aerosol generating device are combined and placed in a suction device (suction capacity: 35mL for conventional suction, 55mL for deep suction; suction time: 2 seconds; suction interval: 30 seconds; suction curve: bell curve). The test module of the suction device is equipped with a temperature sensor. When aerosol is generated, the temperature sensor captures the aerosol release temperature at the medium end and transmits it in real time. The release temperature transmitted by the temperature sensor can directly characterize the amount of aerosol suction temperature. After the temperature reading stabilizes, the aerosol release temperature is read.

[0130] 2. Temperature T2 of the aerosol after passing through the functional section: Test equipment: X500E-L smoke extractor

[0131] Test method: The above-mentioned aerosol generating product and aerosol generating device are combined and placed in a suction device (suction capacity: 35mL for conventional suction, 55mL for deep suction; suction time: 2 seconds; suction interval: 30 seconds; suction curve: bell curve). The test module of the suction device is equipped with a temperature sensor. When aerosol is generated, the temperature sensor captures the aerosol release temperature at the filter tip and transmits it in real time. The release temperature transmitted by the temperature sensor can directly characterize the amount of aerosol suction temperature. After the temperature reading stabilizes, the aerosol release temperature is read.

[0132] Example 1

[0133] 66 parts by weight of modified starch, 6 parts by weight of copper microparticles, 8 parts by weight of boron nitride nanosheets and 20 parts by weight of polyethylene glycol were weighed and mixed evenly. The mixture was then subjected to twin-screw extrusion with the following extrusion parameters: temperature 110℃±5℃, feed rate 1.8±0.2kg / h, screw speed 180±20rpm / min, and linear speed 1.0±0.2m / min. The resulting cooling support section was obtained after extrusion.

[0134] Subsequently, other structural segments were prepared using conventional methods in the art and assembled into a heat-resistant, non-combustible aerosol-generating product. Its parameters are: matrix segment 28 mm, filter segment 10 mm, and sealing segment 6 mm.

[0135] The aerosol-generated product has a total length of 60 mm and a circumference of 21.352 mm.

[0136] The aerosol-generating matrix is ​​filamentous tobacco.

[0137] Examples 2-7

[0138] Except for preparing the cooling support section according to the proportions in Table 1 below, Examples 2-7 were carried out in the same manner as Example 1.

[0139] Comparative Example 1

[0140] The cooling support section is prepared from high-density kraft paper using conventional processes. Other structural sections are the same as in Example 1, and are assembled into the corresponding heat-resistant, non-combustible aerosol-generating product.

[0141] Comparative Example 2

[0142] The cooling support section is prepared from composite fiber paper tubes using conventional processes. Other structural sections are the same as in Example 1, and are assembled into the corresponding heat-resistant, non-combustible aerosol-generating product.

[0143] Comparative Example 3

[0144] Except for preparing the cooling support section according to the proportions in Table 1 below, Comparative Example 3 was carried out using the same method as Example 1.

[0145] The types and contents of each substance in the composite materials of the above embodiments and comparative examples are shown in Table 1, and the performance test results of the composite materials and aerosol products are shown in Table 2.

[0146] Table 1. Types and contents of each substance in the composite materials of Examples 1-7 and Comparative Examples 1-3.

[0147]

[0148] In Table 1, " / " indicates that the symbol does not exist.

[0149] Table 2 Performance test results of Examples 1-7 and Comparative Examples 1-3

[0150] project Thermal conductivity (W / mK) Hardness (HS) Aerosol temperature T1 (°C) Aerosol temperature T2 (°C) Example 1 0.78 62～68 180～230 51.2 Example 2 0.28 64～75 180～230 61.9 Example 3 0.25 75～80 180～230 63.1 Example 4 0.35 82～87 180～230 59.1 Example 5 0.65 80～90 180～230 60.4 Example 6 0.49 64～73 180～230 57.0 Example 7 0.18 80～87 180～230 70.5 Comparative Example 1 0.09～0.12 50～60 180～230 82.1 Comparative Example 2 0.11～0.14 65～75 180～230 79.6 Comparative Example 3 0.08-0.15 50～70 180～230 81.6

[0151] The results above show that thermal conductivity is significantly correlated with the cooling of aerosols. Within the range of thermal conductivity, the temperature of aerosols can be significantly reduced. The combination of organic and inorganic fillers to prepare the supporting cooling section can effectively control the thermal conductivity of the supporting section and improve the heat accumulation caused by low thermal conductivity. It has obvious advantages over traditional paper tubes in terms of mechanical properties and cooling effect.

[0152] Although the invention has been described with reference to specific exemplary embodiments thereof, many different variations, modifications, etc. will become apparent to those skilled in the art.

[0153] By studying the disclosure and the appended claims, those skilled in the art can understand and implement variations of the disclosed embodiments when practicing the present invention.

Claims

1. A functional segment applied to an aerosol-generating article, the aerosol-generating article comprising a matrix segment, wherein, The functional segment is located on one side of the matrix segment near the lip end; The functional segment is an integral structure and includes a composite material. The composite material includes a substrate and additives. The substrate is selected from organic fillers, and the additives are selected from inorganic fillers.

2. The functional segment according to claim 1, wherein, The composite material also includes functional materials, which are selected from one or more of atomizing agents, plasticizers, adhesives, and fragrances. Preferably, the functional materials are selected from atomizing agents.

3. The functional segment according to claim 2, wherein, Based on the total weight of the composite material, the composite material comprises 50 wt% to 90 wt% of the matrix, 1 wt% to 30 wt% of the additives, and less than or equal to 20 wt% of the functional materials.

4. The functional segment according to any one of claims 1 to 3, wherein, The thermal conductivity of the composite material is from 0.05 W / mK to 20 W / mK, preferably from 0.2 W / mK to 1.2 W / mK.

5. The aerosol-generating article according to any one of claims 1 to 4, wherein, The substrate is selected from one or more of plant extracts, natural polymer materials, and synthetic polymers; preferably, the substrate is selected from one or more of cellulose, starch, chitosan, lignocellulose, hemp fiber, coconut shell fiber, protein-based materials, polypropylene, polylactic acid, polyvinyl alcohol, polytetrafluoroethylene, polyhydroxyalkanoates, polycaprolactone, natural rubber, linear low-density polyethylene, high-density polyethylene, and polyimide; more preferably, the substrate is selected from one or more of modified starch, amylopectin, polylactic acid, polyvinyl alcohol, and polypropylene.

6. The functional segment according to any one of claims 1 to 5, characterized in that, The additive is selected from one or more of the following: elemental metals, such as Ag, Cu, Au, Al, Zn, Fe, Sn, Ti, Mg; metal ion additives, such as those containing Cu + Cu 2+ Zn 2+ Al 3+ Na + Mg 2+ Li + K + Additives; oxides or nitrides, such as silicon dioxide, aluminum oxide, aluminum nitride, boron nitride, magnesium oxide, silicon nitride; inorganic non-metallic materials, such as calcium carbonate; Preferably, the additive is selected from one or more of the following: copper microparticles; aluminum ion-containing additives, such as aluminum chloride, aluminum stearate, aluminum hydroxide; silver nanoparticles; zinc ion-containing additives, such as zinc oxide, zinc stearate, zinc sulfate; copper ion-containing additives, such as cuprous oxide, copper phthalocyanine; silicon dioxide; aluminum oxide; and calcium carbonate.

7. The functional segment according to claim 2 or 3, wherein, The atomizing agent is selected from one or more of propylene glycol, glycerol, 1,3-butanediol, tetraethylene glycol, triacetin, triethyl citrate, a mixture of diacetins, methyl benzoate, and triglyceride; preferably, the atomizing agent is selected from one or more of propylene glycol, glycerol, 1,3-butanediol, and tetraethylene glycol; more preferably, the atomizing agent is selected from one or more of propylene glycol and glycerol; and / or, The plasticizer is selected from one or more of starch, small molecule sugars, and alcohols; and / or, The adhesive is selected from one or more of sodium carboxymethyl cellulose, carrageenan, xanthan gum, guar gum, agar, gelatin, sodium alginate, locust bean gum, and konjac gum; and / or, The fragrance is selected from one or more of the following: plant extracts, solanone, furanone, 2-acetylpyrazine, damasne, β-ionone, acetylpropionic acid, menthol, menthone, menthone glyceryl acetal, peppermint oil, peppermint oil, ethyl butyrate, ethyl acetate, ethyl isovalerate, isoamyl acetate, peachaldehyde, methyl cinnamate, and methyl salicylate.

8. The functional segment according to any one of claims 1 to 7, wherein, The fill density of the functional segment is 0.1 g / mm². 3 Up to 0.8 g / mm 3 The filling density of the functional segment is the ratio of the mass of the functional segment to the volume of the functional segment.

9. An aerosol-generating article, comprising: A matrix segment, which is used to generate aerosols, and has a distal lip end and a proximal lip end at its two ends along the axial direction; The functional segment according to any one of claims 1 to 8, wherein the functional segment is disposed near the lip end; as well as A wrapping layer that wraps around the circumferential exterior of the matrix segment and the functional segment.

10. An aerosol generation system, comprising: Aerosol generating apparatus, including heating components; as well as The aerosol generating article according to claim 9, wherein the matrix segment generates an aerosol under the heating action of the heating component.

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