An aerosol-generating article

Abstract

The patent discloses an aerosol generating article, comprising a filter segment, a tubular element and an aerosol generating substrate segment; the outer side of the aerosol generating substrate segment is wrapped with a first plug wrap; the air permeability of the first plug wrap is 6000-25000 CU; when the aerosol generating article is smoked by using a heating smoking set, one end of the aerosol generating substrate segment away from the filter segment can be closely combined with the heating smoking set, at this time, the circulation path of the external airflow is: the external airflow enters through the gap between the aerosol generating article and the heating smoking set, enters into the aerosol generating article through the first plug wrap, and is mixed with high-temperature aerosol to be smoked by a consumer. Compared with the external airflow entering the aerosol generating article from the end of the aerosol generating article, the technical scheme has the advantages of better sensory quality, larger aerosol concentration, smaller stimulation and the like.

Description

Technical Field

[0001] This invention belongs to the field of novel tobacco product technology, and specifically relates to an aerosol-generated product. Background Technology

[0002] As consumers place increasing emphasis on health and demand more personalized experiences in cigarette products, the tobacco industry is continuously responding to these evolving needs by developing various aerosol-generated products that reduce tar and harm. These aerosol-generated products, also known as heated cigarettes, serve as an alternative to traditional tobacco. By avoiding the generation of tar and numerous harmful compounds caused by high-temperature combustion, they possess harm-reducing properties such as lowering the harmful chemical components and biological toxicity of cigarette smoke, making them a significant growth driver for the tobacco industry.

[0003] Aerosol-generating products on the market primarily utilize external heat sources, such as specialized electric heating devices, to continuously heat the aerosol-generating matrix section, releasing aerosols for consumers to inhale, thus avoiding harmful substances produced by tobacco combustion. However, the temperature of electric heating is typically 250-350℃, and aerosol-generating products are relatively short. During inhalation, the aerosol-generating matrix section remains under constant high temperature, easily leading to insufficient cooling of the smoke at the inlet end. Inhaling at excessively high temperatures can result in a burning sensation in the mouth. Furthermore, the airflow path in most existing aerosol-generating products enters from the bottom of the aerosol-generating matrix section, causing excessive cooling of the front end or uneven airflow distribution, which can significantly affect the efficiency of aerosol release after heating and the sensory experience.

[0004] Furthermore, some aerosol-generating products have their airflow path set in the filter section, achieving a cooling effect during inhalation solely through perforations in the filter section. For example, patent document CN115530414A discloses a heated cigarette and a method for perforating the heated cigarette. This involves creating composite perforations in the filter section, where the number of perforation units (n) and the length coefficient (α%) are both within the range of 3.5 < α / n < 7.5. However, while this perforation method can reduce the temperature of the smoke at the inlet, the cooling effect is still primarily dominated by the downstream filter section. This perforation method also results in the airflow path only extending from the perforations to the filter rod and back to the consumer's mouth. Simultaneously, the smoke (aerosol) has poor sensory qualities, is highly irritating, and has poor uniformity, leading to a poor consumer experience.

[0005] Therefore, it is necessary to design an aerosol generating product that can optimize the airflow path and achieve effective cooling, in order to solve the problems of poor sensory quality, high irritation, poor uniformity, poor cooling effect, and poor consumer experience of existing aerosol generating products during inhalation. Summary of the Invention

[0006] The purpose of this patent is to provide an aerosol-generating product that optimizes the airflow path and achieves effective cooling, thereby solving the problems of poor smoke sensation, high irritation, poor uniformity, poor cooling effect, and poor consumer experience of existing aerosol-generating products during inhalation.

[0007] To solve the above technical problems: This patent provides an aerosol generating article, which includes a filter section, a tubular element, and an aerosol generating matrix section. The outer side of the aerosol generation matrix section is covered with a first forming paper; the air permeability of the first forming paper is 6000-6500 CU, 6500-8500 CU, 8500-10500 CU, 10500-17500 CU, 17500-23000 CU or 23000-25000 CU; When the aerosol generating product is inhaled using a heated smoking device, the end of the aerosol generating matrix section away from the filter section can be tightly fitted with the heated smoking device. At this time, the flow path of the external airflow is as follows: the external airflow enters through the gap between the aerosol generating product and the heated smoking device, passes through the first forming paper and enters into the aerosol generating product. After being heated, it forms an aerosol, and then flows through the tubular element to the filter section for the consumer to inhale.

[0008] Furthermore, the filter section, tubular element, and aerosol generation matrix section are connected in sequence, with the bottom of the aerosol generation matrix section located at the end furthest from the filter section.

[0009] Furthermore, the axial length of the first formed paper-covered aerosol generating matrix segment is less than or equal to the axial length of the aerosol generating matrix segment.

[0010] Furthermore, the filter section and the tubular element are covered with a second forming paper, the axial length of which is greater than or equal to the sum of the axial lengths of the filter section and the tubular element.

[0011] Furthermore, when the axial length of the second forming paper covering is greater than the sum of the axial lengths of the filter section and the tubular element, the axial length of the aerosol generating matrix section covered by the second forming paper is less than or equal to 5 / 6 of the axial length of the aerosol generating matrix section.

[0012] Furthermore, the air permeability of the second-formed paper is less than 4000 CU.

[0013] The second forming paper is not breathable, meaning its air permeability is 0.

[0014] Furthermore, the aerosol generating product also includes upstream components, which are connected to the bottom of the aerosol generating matrix section.

[0015] Furthermore, the upstream components have a pull-in resistance of at least 78 mmH2O, 80 mmH2O, 82 mmH2O, 85 mmH2O, or 90 mmH2O.

[0016] Furthermore, when the aerosol-generating product is inhaled using a heated smoke device, the end of the upstream element furthest from the filter section can be tightly fitted with the heated smoke device. At this time, the flow path of the external airflow is as follows: the external airflow can only enter through the gap between the aerosol-generating product and the heated smoke device, pass through the first forming paper and enter the aerosol-generating product. After being heated, it forms an aerosol, which then flows through the tubular element to the filter section for consumers to inhale.

[0017] Furthermore, an air inlet is provided at one end of the tubular element near the filter section.

[0018] Furthermore, when aerosol-generating products are drawn in using a heated fume device, the air inlet is located outside the heated fume device, and the upstream components can fit tightly against the heated fume device. In this case, there are two paths for the external airflow: One method involves external airflow entering through the gap between the aerosol generating product and the heated smoking device, passing through the first forming paper into the aerosol generating product, forming an aerosol after heating, and then flowing through the tubular element to the filter section for consumers to inhale. Another method involves external airflow entering the tubular element through the air inlet, and then passing through a filter section to cool the aerosol and prevent burns to consumers.

[0019] Furthermore, there are at least two air intakes, which are round, strip-shaped, or irregularly shaped.

[0020] Furthermore, the material of the first formed paper is one or more combinations of softwood pulp, hardwood pulp, hemp fiber, and resin.

[0021] Furthermore, the filter section, tubular element, aerosol generation matrix section and upstream element are sequentially connected using the second forming paper and the first forming paper to form an integrated cigarette-shaped cylinder.

[0022] Furthermore, when the axial length of the aerosol generating matrix section covered by the first forming paper is equal to the axial length of the aerosol generating matrix section, the axial length of the second forming paper covered by the second forming paper is equal to the sum of the axial lengths of the filter section and the tubular element.

[0023] Furthermore, the outer sides of the first and second forming papers are covered with tipping paper, which is airtight, and the axial length of the tipping paper is equal to the sum of the axial lengths of the first and second forming papers.

[0024] In some preferred embodiments, the aerosol-generating matrix in the aerosol-forming matrix segment comprises tobacco. For example, the aerosol-forming material may be formed from sheets of homogeneous tobacco.

[0025] Alternatively or additionally, the aerosol forming matrix may include tobacco-free aerosol forming materials.

[0026] For example, the aerosol forming material can be a sheet that includes nicotine salts and an aerosol forming agent.

[0027] Alternatively or additionally, the aerosol forming matrix may include a single aerosol forming agent. Alternatively, the aerosol forming matrix may include a combination of two or more aerosol forming agents.

[0028] Preferably, the aerosol forming matrix has an aerosol forming agent content of more than 5% by dry weight. More preferably, the aerosol forming matrix may have an aerosol forming agent content between about 5% and about 30% by dry weight. In one embodiment, the aerosol forming matrix has an aerosol forming agent content of about 20% by dry weight.

[0029] In this invention, aerosol forming agent is used to describe any suitable known compound or mixture of compounds that promotes aerosol formation in use and is substantially resistant to thermal degradation at the operating temperature of the aerosol-generated article.

[0030] Suitable aerosol forming agents are known in the art and include, but are not limited to: polyols, such as propylene glycol, triethylene glycol, 1,3-butanediol, and glycerol; esters of polyols, such as glycerol monoacetate, glycerol diacetate, or glycerol triacetate; and aliphatic esters of mono-, di-, or polycarboxylic acids, such as dimethyl dodecanoate and dimethyl tetradecanoate. Preferred aerosol forming agents are polyols or mixtures thereof, such as propylene glycol, triethylene glycol, 1,3-butanediol, and most preferably glycerol.

[0031] Preferably, the aerosol forming matrix includes a solid aerosol forming matrix, which may include one or more of fragments, strips, bars or sheets, and contains one or more of herbaceous plant leaves, tobacco leaves, tobacco ribs, flat tobacco and homogeneous tobacco.

[0032] Alternatively, the solid aerosol forming matrix can be placed on or embedded in a thermally stable carrier.

[0033] The carrier can be any form, such as fragments, strips, bars, or sheets.

[0034] Alternatively, the solid aerosol forming matrix can be arranged on the surface of the carrier in the form of, for example, sheets, foams, gels or slurries.

[0035] The aerosol forming matrix can be, by choice, in the form of a plug.

[0036] Alternatively, the plug may include an aerosol-forming material defined by paper or other packaging material. In the case where the aerosol-forming matrix is ​​in the form of a plug, the entire plug comprising any packaging paper is considered to be the aerosol-forming matrix.

[0037] Preferably, the heated cigarette includes an aerosol forming matrix, a support element, an aerosol cooling element, and a filter section. The support element and the aerosol cooling element form an intermediate composite section, while the aerosol forming matrix forms the smoke-generating section.

[0038] Preferably, the aerosol cooling element can have a length of approximately 300 mm per millimeter. 2 With a length of approximately 1000 mm per millimeter 2 The total surface area between them. In a preferred embodiment, the aerosol cooling element has approximately 500 mm per millimeter of length. 2 The total surface area.

[0039] Preferably, the aerosol cooling element has low suction resistance. That is, preferably, the aerosol cooling element provides low resistance to air passing through the aerosol-generated article. Preferably, the aerosol cooling element has virtually no impact on the suction resistance of the aerosol-generated article.

[0040] Preferably, the aerosol forming matrix, support element, aerosol cooling element, and filter section are generally cylindrical and have a substantially uniform outer diameter. For example, they have an outer diameter of at least 5 mm. Preferably, they have an outer diameter between about 5 mm and about 12 mm, for example, between about 5 mm and about 10 mm, or between about 6 mm and about 8 mm. In a preferred embodiment, the outer diameter is 7.2 mm + / - 10%.

[0041] Preferably, the aerosol forming matrix can have a length between about 5 mm and about 15 mm, for example, between about 8 mm and about 12 mm. In a preferred embodiment, the aerosol forming matrix has a length of about 12 mm.

[0042] Preferably, the support element may comprise a hollow tubular element. The support element may be formed from any suitable material or combination of materials.

[0043] More preferably, the support element may be formed from one or more materials from the group consisting of: cellulose acetate; paperboard; crimped paper, such as crimped heat-resistant paper or crimped parchment; and polymeric materials, such as low-density polyethylene (LDPE). In a preferred embodiment, the support element comprises a medium cellulose acetate tube.

[0044] Preferably, the filter section can have a length between approximately 5 mm and approximately 20 mm. In a preferred embodiment, the filter section has a length of approximately 14 mm. The filter section can have a length between approximately 5 mm and approximately 14 mm. In a preferred embodiment, the filter section has a length of approximately 7 mm.

[0045] Compared with existing technologies, this patent has the following beneficial effects: 1. This application, by opening an air inlet in a hollow tubular element, allows for two airflow paths into the aerosol generating product when it is inhaled using a heated smoking device. One path involves external airflow entering through the gap between the aerosol generating product and the heated smoking device, passing through the first forming paper, and then heating to form an aerosol before flowing through the tubular element to the filter section for the consumer to inhale. The other path involves external airflow entering the tubular element through the air inlet and then passing through the filter section to cool the aerosol and prevent burns to the consumer. This optimizes the airflow path and achieves effective cooling, solving the problems of existing aerosol generating products that cannot achieve gradual cooling during inhalation, have poor sensory characteristics, are highly irritating, and result in a poor consumer experience.

[0046] 2. The aerosol generating product provided in this application has a simple manufacturing process and low cost, making it suitable for industrial production. Attached Figure Description

[0047] The above content of this patent and the following detailed embodiments will be better understood when read in conjunction with the accompanying drawings. It should be noted that the drawings are merely examples of the claimed technical solution.

[0048] Figure 1 This is a schematic diagram of the overall structure of the aerosol-generated product in Embodiment 1 of this application; Figure 2 This is a schematic diagram of the overall structure of the heating fume device in Embodiment 1 of this application; Figure 3 This is a schematic diagram of the airflow path during the suction of the aerosol-generated product in Embodiment 1 of this application; Figure 4 This is a schematic diagram of the overall structure of the aerosol-generated product in Embodiment 2 of this application; Figure 5 This is a schematic diagram of the airflow path during the suction of the aerosol-generated product in Embodiment 2 of this application; Figure 6 This is a characterization graph of aerosol concentration and number of inhalations during the aerosol generation process in Test Example 1 of this application (where the horizontal axis represents the number of inhalations in (times); and the vertical axis represents the aerosol concentration in (%)).

[0049] The reference numerals in the attached figures are explained as follows: Aerosol-generated products: 100a, 100b; Filter sections: 110a, 110b; Tubular elements: 120a, 120b; Air intake ports: 121a, 121b; Aerosol generation matrix sections: 130a, 130b; First forming paper: 140a, 140b; Second forming paper: 150a, 150b; Upstream component: 160; Heated smoke appliance: 200; Battery and control components: 210; Reception cavity: 220; Heating element: 230. Detailed Implementation

[0050] 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.

[0051] In this specification and claims, several terms will be used, and unless otherwise indicated, these terms will be defined to have the following meanings: As used in this patent, "CU" (CORESTA unit) is a unit of air permeability, referring to the permeability of 1 cm³ / min under a pressure difference of 100 Pa. 2 The air volume on the paper surface (mL / min) is the internationally recognized standard for the air permeability of first-formed paper.

[0052] All figures used to represent component amounts, properties (e.g., weight-average 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 in this application. The principle of equivalents, which is 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.

[0053] All other terms used herein for special definition are intended to have the general meaning understood by one of ordinary skill in the art, in particular, meaning that one of ordinary skill in the art can directly and without doubt determine how the technical solution of this application can be implemented after reading the claims, description and drawings of this application.

[0054] Even if there are incomplete descriptions, omissions, or ambiguities in the grammar, words, punctuation, graphics, symbols, etc. of the claims, description, and drawings of this application, those skilled in the art can still arrive at the only correct understanding by reading the claims, description, 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 application.

[0055] The "range" disclosed herein is defined by a lower limit and an upper limit. A given range is defined by selecting a lower limit and an upper limit, which define the boundaries of a particular range. Ranges defined in this way can include or exclude endpoints and can be arbitrarily combined; that is, any lower limit can be combined with any upper limit to form a range. For example, if ranges of 60-120 and 80-110 are listed for a specific parameter, it is expected that ranges of 60-110 and 80-120 are also expected. Furthermore, if minimum range values ​​of 1 and 2 are listed, and if maximum range values ​​of 3, 4, and 5 are listed, then the following ranges are all expected: 1-3, 1-4, 1-5, 2-3, 2-4, and 2-5. In this application, unless otherwise stated, the numerical range "ab" represents a shortened representation of any combination of real numbers between a and b, where a and b are real numbers. For example, the numerical range "0-5" indicates that all real numbers between "0-5" have been listed in this article; "0-5" is simply a shortened representation of these numerical combinations. Furthermore, when a parameter is stated as an integer ≥2, it is equivalent to disclosing that the parameter is, for example, an integer such as 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, etc.

[0056] Unless otherwise specified, all embodiments and preferred embodiments mentioned herein can be combined to form new technical solutions.

[0057] Unless otherwise specified, all the technical features and preferred features mentioned herein can be combined to form new technical solutions.

[0058] Unless otherwise specified, all steps mentioned herein may be performed sequentially or randomly, but are preferably performed sequentially. For example, the method includes steps (a) and (b), indicating that the method may include steps (a) and (b) performed sequentially, or it may include steps (b) and (a) performed sequentially. For example, the mention that the method may also include step (c) indicates that step (c) may be added to the method in any order; for example, the method may include steps (a), (b), and (c), or it may include steps (a), (c), and (b), or it may include steps (c), (a), and (b), etc.

[0059] Unless otherwise specified, the terms "comprising" and "including" as used herein can be open-ended or closed-ended. For example, "comprising" and "including" may mean that other components not listed may also be included, or that only the listed components may be included.

[0060] In the description of this article, it should be noted that, unless otherwise stated, "above" and "below" include the number itself, and "several" in "one or more" means two or more.

[0061] In this description, unless otherwise stated, the term "or" is inclusive. For example, the phrase "A or B" means "A, B, or both A and B". More specifically, the condition "A or B" is satisfied by any of the following conditions: A is true (or exists) and B is false (or does not exist); A is false (or does not exist) and B is true (or exists); or both A and B are true (or exist).

[0062] Unless otherwise specified, percentages (%) in this document refer to percentages by mass relative to the composition.

[0063] Unless otherwise stated herein, the sum of the contents of the components in the composition is 100%.

[0064] In this document, unless otherwise stated, “combination of” means a multi-component mixture of the elements, such as two, three, four, and up to the maximum possible multi-component mixture.

[0065] Unless otherwise specified, the term "a" as used in this specification means "at least one".

[0066] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0067] 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 application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0068] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be further described in detail below with reference to the accompanying drawings. Unless otherwise specified, the experimental methods described in the embodiments of this application are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0069] Example 1

[0070] like Figure 1-3 As shown, this is a specific embodiment of the present patent. The present application provides an aerosol generating article 100a, which includes a filter section 110a, a tubular element 120a, and an aerosol generating matrix section 130a. The outer side of the aerosol generating matrix section 130a is covered with a first forming paper 140a, and the outer sides of the filter section 110a and the tubular element 120a are covered with a second forming paper 150a.

[0071] Specifically, the filter section 110a, the tubular element 120a, and the aerosol generating matrix section 130a are connected in sequence, with the aerosol generating matrix section 130a located at the end furthest from the filter section 110a. This can be understood as the filter section 110a being downstream of the aerosol generating product 100a, i.e., closer to the end inhaled by the consumer, while the aerosol generating matrix section 130a is located upstream of the aerosol generating product 100a, i.e., furthest from the end inhaled by the consumer.

[0072] More specifically, filter section 110a is composed of cellulose acetate material and is used for filtering and / or cooling aerosols. Furthermore, the cellulose acetate material also contains activated carbon or nanofiber layers to filter harmful substances.

[0073] Specifically, an air inlet 121a is provided on the tubular element 120a at one end near the filter section 110a.

[0074] More specifically, the number of air inlets 121a is at least two, which are used for external airflow to enter the aerosol generating product 100a. This can be understood as the number of air inlets 121a being two, three, four, or more. In some specific embodiments, the shape of the air inlets 121a can also be one or more combinations of round holes, strip holes, or irregularly shaped holes, and the air inlets 121a can be symmetrically or asymmetrically arranged.

[0075] Specifically, the filter section 110a and the tubular element 120a are covered with a second forming paper 150a, and the axial length of the second forming paper 150a is greater than or equal to the sum of the axial lengths of the filter section 110a and the tubular element 120a.

[0076] More specifically, when the axial length of the second forming paper 150a is greater than the sum of the axial lengths of the filter section 110a and the tubular element 120a, the aerosol generating matrix section 130a is at least partially covered by the second forming paper 150a.

[0077] Specifically, the axial length of the aerosol generating matrix segment 130a covered by the second forming paper 150a is less than or equal to 5 / 6 of the axial length of the aerosol generating matrix segment 130a.

[0078] More specifically, the air permeability of the second forming paper 150a is less than 4000 CU. This can be understood as the second forming paper 150a being a standard second forming paper with an air permeability of 30 CU, 50 CU, 80 CU, 100 CU, 1000 CU, 2000 CU, or 3000 CU, etc. In some other embodiments, the second forming paper 150a may be airtight, i.e., its air permeability is 0.

[0079] Specifically, the outer side of the aerosol generating matrix segment 130a is covered with a breathable first forming paper 140a.

[0080] More specifically, the air permeability of the first forming paper 140a (purchased from Mudanjiang Hengfeng Paper Co., Ltd.) is 6000 CU. In some other embodiments, the air permeability of the first forming paper 140a can also be any of 6000-6500 CU, 6500-8500 CU, 8500-10500 CU, 10500-17500 CU, 17500-23000 CU, or 23000-25000 CU, as long as it allows external airflow to pass through the first forming paper 140a and enter the aerosol generation matrix section 130a.

[0081] More specifically, the axial length of the first forming paper 140a covering the aerosol generating matrix section 130a is less than or equal to the axial length of the aerosol generating matrix section 130a. This can be understood as the first forming paper 140a partially covering the outside of the aerosol generating matrix section 130a, allowing external airflow to pass through the first forming paper 140a and enter the aerosol generating matrix section 130a through its permeability.

[0082] This can be understood as follows: when the axial length of the aerosol generating matrix segment 130a covered by the second forming paper 150a is 5 / 6, the remaining 1 / 6 of the aerosol generating matrix segment 130a is covered by the first forming paper 140a. In some other specific embodiments, the aerosol generating matrix segment 130a may be completely covered only by the first forming paper 140a, i.e., the second forming paper 150a is not used for covering.

[0083] More specifically, the material of the first formed paper 140a is one or more combinations of softwood pulp, hardwood pulp, bast fibers, and resin. In some other embodiments, the material of the first formed paper 140a may also be one or more combinations of softwood pulp, hardwood pulp, bast fibers, and resin mixed with inorganic fillers, including calcium carbonate.

[0084] Specifically, the filter section 110a, tubular element 120a, and aerosol generating matrix section 130a are rolled up and connected in sequence using the second forming paper 150a and the first forming paper 140a to form an integral cigarette-shaped cylinder, thus obtaining the aerosol generating product 100a.

[0085] In some other specific embodiments, the aerosol generating matrix section 130a can be completely covered only by the first forming paper 140a without the second forming paper 150a. However, the filter section 110a and the tubular element 120a are covered by the second forming paper 150a. In this case, the first forming paper 140a covering structure and the second forming paper 150a covering structure are formed respectively. The outer layer of the first forming paper 140a covering structure and the second forming paper 150a covering structure can also be completely covered by a layer of tipping paper. The tipping paper is not air-permeable, so that the first forming paper 140a covering structure and the second forming paper 150a covering structure are connected in sequence to form an integral cigarette-shaped cylinder, thus obtaining the aerosol generating product 100a.

[0086] More specifically, the second forming paper 150a is made of hemp pulp paper and specialty wood pulp paper. Hemp pulp paper is used for air permeability control, with a porosity of 30%-50%, to control the aerosol release rate; it contains flame retardants (such as aluminum hydroxide) to improve safety. Specialty wood pulp paper is used to enhance stiffness and reduce heat deformation.

[0087] The aerosol generating article 100a prepared in this embodiment can be heated by a heating device 200. The heating device 200 is an aerosol generating apparatus, which is arranged to receive the aerosol generating article 100a so that the aerosol generating matrix section 130a in the aerosol generating article 100a generates aerosols.

[0088] Specifically, the heated smoke appliance 200 includes a housing, a battery and control components 210, a receiving cavity 220 and a circumferentially heated heating element 230, the receiving cavity 220 being used to receive the aerosol generation matrix section 130a. The heated smoking device 200 and the aerosol generating matrix section 130a inserted therein constitute an aerosol generating system. At this time, the heating temperature of the heated smoking device 200 is greater than or equal to 250°C. When the aerosol generating product 100a is inhaled using the heated smoking device 200, there are two flow paths for the external airflow. The first is that the external airflow passes through the gap between the aerosol generating product 100a and the heated smoking device 200 in the circumference and bottom, and enters the aerosol generating product 100a through the first forming paper 140a. After being heated, it forms an aerosol, and then flows through the tubular element 120a to the filter section 110a to deliver the aerosol to the consumer for inhalation. The second is that the external airflow enters the interior of the tubular element 120a through the air inlet 121a, and then passes through the filter section 110a to cool the aerosol and prevent burns to the consumer.

[0089] Example 2

[0090] like Figure 4-5 As shown, this is another specific embodiment of the present patent. The present application provides an aerosol generating article 100b, which includes a filter section 110b, a tubular element 120b, and an aerosol generating matrix section 130b. The outer side of the aerosol generating matrix section 130b is covered with a first forming paper 140b, and the outer sides of the filter section 110b and the tubular element 120b are covered with a second forming paper 150b.

[0091] Specifically, the filter section 110b, the tubular element 120b, and the aerosol generating matrix section 130b are connected in sequence, with the aerosol generating matrix section 130b located at the end furthest from the filter section 110b. This can be understood as the filter section 110b being downstream of the aerosol generating product 100b, i.e., closer to the end inhaled by the consumer, while the aerosol generating matrix section 130b is upstream of the aerosol generating product 100b, i.e., furthest from the end inhaled by the consumer.

[0092] More specifically, filter section 110b is composed of cellulose acetate material for filtering and / or cooling multiple fumes. Furthermore, the cellulose acetate material also contains a layer of activated carbon or nanofibers to filter harmful substances.

[0093] Specifically, an air inlet 121b is provided on the tubular element 120b at one end near the filter section 110b.

[0094] More specifically, the number of air inlets 121b is at least two, which are used for external airflow to enter the aerosol generating article 100b. This can be understood as the number of air inlets 121b being two, three, four, or more holes. In some specific embodiments, the shape of the air inlets 121b can also be one or more combinations of round holes, strip holes, or irregularly shaped holes, and the air inlets 121b can be symmetrically or asymmetrically arranged.

[0095] Specifically, the filter section 110b and the tubular element 120b are covered with a second forming paper 150b, and the axial length of the second forming paper 150b is greater than or equal to the sum of the axial lengths of the filter section 110b and the tubular element 120b.

[0096] More specifically, when the axial length of the second forming paper 150b is greater than the sum of the axial lengths of the filter section 110b and the tubular element 120b, the aerosol generating matrix section 130b is at least partially covered by the second forming paper 150b.

[0097] Specifically, the axial length of the aerosol generating matrix segment 130b covered by the second forming paper 150b is less than or equal to 5 / 6 of the axial length of the aerosol generating matrix segment 130b.

[0098] More specifically, the air permeability of the second forming paper 150b is less than 4000 CU. This can be understood as the second forming paper 150b being a standard second forming paper with an air permeability of 30 CU, 50 CU, 80 CU, 100 CU, 1000 CU, 2000 CU, or 3000 CU, etc. In some other embodiments, the second forming paper 150b may be airtight, i.e., its air permeability is 0.

[0099] Specifically, the outer side of the aerosol generating matrix segment 130b is covered with a breathable first forming paper 140b.

[0100] More specifically, the air permeability of the first forming paper 140b is 6000 CU. In some other embodiments, the air permeability of the first forming paper 140b can also be any of 6000-6500 CU, 6500-8500 CU, 8500-10500 CU, 10500-17500 CU, 17500-23000 CU, or 23000-25000 CU, as long as it allows external airflow to pass through the first forming paper 140b and enter the aerosol generating matrix section 130b.

[0101] More specifically, the axial length of the first forming paper 140b covering the aerosol generating matrix section 130b is less than or equal to the axial length of the aerosol generating matrix section 130b. This can be understood as the first forming paper 140b partially covering the outside of the aerosol generating matrix section 130b, allowing external airflow to pass through the first forming paper 140b and enter the aerosol generating matrix section 130b through its permeability.

[0102] This can be understood as follows: when the axial length of the aerosol generating matrix segment 130b covered by the second forming paper 150b is 5 / 6, the remaining 1 / 6 of the aerosol generating matrix segment 130b is covered by the first forming paper 140b. In some other specific embodiments, the aerosol generating matrix segment 130b can be completely covered only by the first forming paper 140b, that is, the second forming paper 150b is not used for covering.

[0103] Specifically, the aerosol generating article 100b also includes an upstream element 160, which is connected to the aerosol generating matrix section 130b and located at the end away from the filter section 100b.

[0104] More specifically, the upstream element 160 and the aerosol generating matrix section 130b can be connected by being simultaneously covered by the first forming paper 140b. That is, at least part of the end of the upstream element 160 near the aerosol generating matrix section 130b is covered by the first forming paper 140b, so that the upstream element 160 can be connected to the aerosol generating matrix section 130b.

[0105] More specifically, the upstream element 160 has a draw resistance of at least 78 mmH2O to guide the airflow channel primarily into the interior of the aerosol-generating article 100b through the highly permeable first forming paper 140b, rather than from the end of the aerosol-generating matrix section 130b. In some other embodiments, the draw resistance of the upstream element 160 may also be at least 78 mmH2O, 80 mmH2O, 82 mmH2O, 85 mmH2O, 90 mmH2O, 92 mmH2O, or 95 mmH2O.

[0106] More specifically, the material of the first formed paper 140b is one or more combinations of softwood pulp, hardwood pulp, bast fibers, and resin. In some other embodiments, the material of the first formed paper 140b may also be one or more combinations of softwood pulp, hardwood pulp, bast fibers, and resin mixed with inorganic fillers, including calcium carbonate.

[0107] Specifically, the filter section 110b, tubular element 120b, aerosol generating matrix section 130b and upstream element 160 are rolled up and sequentially connected to form an integral cigarette-shaped cylinder using the second forming paper 150b and the first forming paper 140b, thus obtaining the aerosol generating product 100b.

[0108] In some other embodiments, the aerosol generating matrix segment 130b may be completely covered only by the first forming paper 140b, without the second forming paper 150b, that is, the axial length of the aerosol generating matrix segment 130b is equal to the axial length of the first forming paper 140b; however, the filter segment 110b and the tubular element 120b are covered by the second forming paper 150b, that is, the total axial length of the filter segment 110b and the tubular element 120b is equal to the axial length of the second forming paper 150b. At this point, a first forming paper 140b covering structure and a second forming paper 150b covering structure are formed respectively. A layer of tipping paper can also be used to cover the outer layer of the upstream element 160, the first forming paper 140b covering structure and the second forming paper 150b covering structure. The tipping paper is not airtight, so that the upstream element 160, the first forming paper 140b covering structure and the second forming paper 150b covering structure are connected in sequence to form an integrated cigarette-shaped cylinder, thus obtaining the aerosol generating product 100b.

[0109] More specifically, the second forming paper 150b is made of hemp pulp paper and specialty wood pulp paper. Hemp pulp paper is used for air permeability control, with a porosity of 30%~50%, to control the aerosol release rate; it contains flame retardants (such as aluminum hydroxide) to improve safety. Specialty wood pulp paper is used to enhance stiffness and reduce heat deformation.

[0110] The aerosol generating article 100b prepared in this embodiment can be heated by a heating device 200. The heating device 200 is an aerosol generating apparatus, which is arranged to receive the aerosol generating article 100b so that the aerosol generating matrix section 130b in the aerosol generating article 100b generates aerosols.

[0111] Specifically, the heated smoke appliance 200 includes a housing, a battery and control components 210, a receiving cavity 220 and a circumferentially heated heating element 230, the receiving cavity 220 being used to receive the aerosol generation matrix section 130b. The heated smoking device 200 and the aerosol generating matrix section 130b inserted therein constitute an aerosol generating system. At this time, the heating temperature of the heated smoking device 200 is greater than or equal to 250°C. When the aerosol generating product 100b is inhaled using the heated smoking device 200, the end of the upstream element 160 away from the filter section 110b can be in close contact with the heated smoking device 200. There are two flow paths for the external airflow. The first is that the external airflow passes through the gap between the aerosol generating product 100b and the heated smoking device 200 in the circumferential direction and enters into the aerosol generating product 100b through the first forming paper 140b. After being heated, it forms an aerosol and then flows through the tubular element 120b to the filter section 110b to deliver the aerosol to the consumer for inhalation. The second is that the external airflow enters into the tubular element 120b through the air inlet 121b and then passes through the filter section 110b to cool the aerosol and prevent burns to the consumer.

[0112] Comparative Example 1

[0113] Compared with Example 2, the difference is that this comparative example uses ordinary first forming paper with an air permeability of 3000 CU. The filter section, tubular element, aerosol generation matrix section and upstream element are rolled and connected in sequence through the second forming paper and the first forming paper to form an integral cigarette-shaped cylinder, thus obtaining the aerosol generation product.

[0114] Comparative Example 2

[0115] Compared with Example 2, the difference is that in this comparative example, the axial length of the aerosol generating matrix section covered by the second forming paper is greater than 5 / 6 of the axial length of the aerosol generating matrix section. Specifically, the axial length of the aerosol generating matrix section covered by the second forming paper is 7 / 8 of the axial length of the aerosol generating matrix section. During the rolling process, the filter section, tubular element, aerosol generating matrix section and upstream element are rolled and connected in sequence using two first forming papers with different air permeability to form an integrated cigarette-shaped cylinder, thus obtaining the aerosol generating product.

[0116] Comparative Example 3

[0117] Compared with Example 2, the difference is that the absorption resistance of the upstream element in this comparative example is less than 78 mmH2O, specifically, the absorption resistance of the upstream element is 40 mmH2O. During the rolling process, the filter section, tubular element, aerosol generating matrix section and upstream element are rolled and connected sequentially using two types of first forming paper with different air permeability to form an integral cigarette-shaped cylinder, thus obtaining the aerosol generating product.

[0118] Test Example 1: Aerosol Concentration and Temperature Test

[0119] (1) Using the existing cigarette temperature measuring device, the aerosol generating product and the matching heating device in the above specific embodiment were tested by smoking. The smoking mode was HCI (Canadian deep smoking mode, smoking capacity 55 mL, smoking interval 30 s, smoking duration 2 s, waveform is clock wave). The aerosol concentration and number of puffs were recorded after one working cycle (after smoking one aerosol generating product was finished).

[0120] The results are as follows Figure 6 As shown, from the first puff, the aerosol concentration of the aerosol-generating products prepared in Examples 1-2 during puffing was significantly higher than that of the aerosol-generating products prepared in Comparative Examples 1-3. Under the same number of puffs, the aerosol concentration of the aerosol-generating products prepared in Examples 1-2 during puffing was also significantly higher than that of the aerosol-generating products prepared in Comparative Examples 1-3. Furthermore, the aerosol concentration of the aerosol-generating products prepared in Examples 1-2 during puffing remained above 92%, even stabilizing within the 92-96% range, demonstrating strong uniformity of aerosol concentration over a single puffing cycle. In contrast, the aerosol concentration of the aerosol-generating products prepared in Comparative Examples 1-3 ranged significantly from 80% to 95% during puffing, exhibiting poor uniformity and consequently resulting in a less satisfactory consumer experience.

[0121] (2) Using the existing cigarette temperature measuring device, the aerosol generating product and the matching heating device in the above specific embodiment were tested by inhalation. The inhalation mode was HCI (Canadian deep inhalation mode, inhalation capacity 55 mL, inhalation interval 30 s, inhalation duration 2 s, waveform is clock wave). The aerosol temperature data was recorded after one working cycle (after the inhalation of one aerosol generating product was completed). The average value was taken from 3 parallel tests.

[0122] The results are shown in Table 1. After the aerosol generation products in Examples 1-2 and Comparative Examples 1-3 were pumped out, the temperature of the aerosol generated in Example 1-2 was significantly lower than that in Comparative Examples 1-3. This indicates that the aerosol generation products prepared using the method shown in Examples 1-2 of this application can significantly reduce the temperature of the aerosol generated during pumping, effectively avoiding the problem of high temperature during pumping of existing aerosol generation products and significantly improving the consumer experience.

[0123] Table 1. Statistical Table of Aerosol Temperatures in Aerosol-Generated Products

[0124] Note:" "After performing significance analysis using SPSS software, the comparison sample showed a highly significant difference compared to the example sample."

[0125] Test Example 2: Smoking Test

[0126] The aerosol-generated products prepared in Examples 1-2 and Comparative Examples 1-3 were subjected to tasting experiments according to the evaluation method. Referring to "GB5606.4-2005 Cigarettes Part 4 Sensory Technical Requirements", "YC / T 564-2018 Sensory Evaluation Method of Chinese Cigarettes Based on Consumer Experience" and "YC / T 497-2014 Sensory Evaluation Method of Chinese Cigarette Style", key evaluation indicators were formulated in combination with the smoke characteristics of heated cigarettes. A professional aroma evaluation group of more than 7 people evaluated the heated cigarettes from the dimensions of aroma characteristics, smoke characteristics, and taste characteristics.

[0127] The results are shown in Table 2. The evaluation results were obtained by 7 provincial-level smoke testers, and the average value of the evaluation results was taken. The results showed that the aerosol-generated products prepared in Examples 1-2 had a more pleasant aroma, a richer and more delicate smoke flavor, a cleaner aftertaste, and less burning and irritation compared to the aerosol-generated products prepared in Comparative Examples 1-3. This indicates that the aerosol-generated products prepared using the methods described in Examples 1-2 can significantly improve the smoking experience and increase consumer comfort.

[0128] Table 2. Absorption Scoring Table for Aerosol-Generated Products

[0129] Therefore, it can be concluded that the aerosol generating product provided in this application has the following advantages over the prior art: 1. This application, by opening an air inlet in a hollow tubular element, allows for two airflow paths into the aerosol generating product when it is inhaled using a heated smoking device. One path involves external airflow entering through the gap between the aerosol generating product and the heated smoking device, passing through the first forming paper, and then heating to form an aerosol before flowing through the tubular element to the filter section for the consumer to inhale. The other path involves external airflow entering the tubular element through the air inlet and then passing through the filter section to cool the aerosol and prevent burns to the consumer. This optimizes the airflow path and achieves effective cooling, solving the problems of existing aerosol generating products that cannot achieve gradual cooling during inhalation, have poor sensory characteristics, are highly irritating, and result in a poor consumer experience.

[0130] 2. The aerosol generating product provided in this application has a simple manufacturing process and low cost, making it suitable for industrial production.

[0131] The terminology and expressions used herein are for descriptive purposes only and this patent should not be limited to these terms and expressions. The use of these terms and expressions does not imply the exclusion of any illustrative and descriptive equivalent features (or parts thereof), and it should be recognized that various possible modifications should also be included within the scope of the claims. Other modifications, variations, and substitutions may also exist. Accordingly, the claims should be considered to cover all such equivalents.

[0132] Similarly, it should be noted that although this patent has been described with reference to the specific embodiments described above, those skilled in the art should recognize that the above embodiments are only used to illustrate this patent, and various equivalent changes or substitutions can be made without departing from the spirit of this patent. Therefore, any changes or modifications to the above embodiments within the essential spirit of this patent will fall within the scope of the claims of this patent.

Claims

1. An aerosol-generating product, characterized in that, The aerosol generating product includes a filter section, a tubular element, and an aerosol generating matrix section. The outer side of the aerosol generating matrix section is covered with a first forming paper; the air permeability of the first forming paper is 6000-6500 CU, 6500-8500 CU, 8500-10500 CU, 10500-17500 CU, 17500-23000 CU or 23000-25000 CU; When the aerosol generating product is inhaled using a heated smoking device, the end of the aerosol generating matrix section away from the filter section can be tightly fitted with the heated smoking device. At this time, the flow path of the external airflow is as follows: the external airflow enters through the gap between the aerosol generating product and the heated smoking device, passes through the first forming paper and enters into the aerosol generating product, is heated to form an aerosol, and then flows through the tubular element to the filter section for the consumer to inhale.

2. The aerosol-generating product according to claim 1, characterized in that, The filter section, the tubular element, and the aerosol generating matrix section are connected in sequence, with the bottom of the aerosol generating matrix section located at the end furthest from the filter section. The axial length of the aerosol generating matrix segment covered by the first forming paper is less than or equal to the axial length of the aerosol generating matrix segment.

3. The aerosol-generating product according to claim 2, characterized in that, The filter section and the tubular element are covered with a second forming paper, the axial length of which is greater than or equal to the sum of the axial lengths of the filter section and the tubular element.

4. The aerosol-generating product according to claim 3, characterized in that, When the axial length of the second forming paper covering the aerosol generating matrix section is greater than the sum of the axial lengths of the filter section and the tubular element, the axial length of the aerosol generating matrix section covered by the second forming paper is less than or equal to 5 / 6 of the axial length of the aerosol generating matrix section; the air permeability of the second forming paper is less than 4000 CU.

5. The aerosol-generating product according to claim 4, characterized in that, The aerosol generating product also includes an upstream component, which is connected to the bottom of the aerosol generating matrix section.

6. The aerosol-generating product according to claim 5, characterized in that, The upstream element has a pull-in resistance, which is at least 78 mmH2O, 80 mmH2O, 82 mmH2O, 85 mmH2O or 90 mmH2O; When the aerosol generating product is inhaled using a heated smoking device, the end of the upstream element away from the filter section can be in close contact with the heated smoking device. At this time, the flow path of the external airflow is as follows: the external airflow can only enter through the gap between the aerosol generating product and the heated smoking device, pass through the first forming paper and enter into the aerosol generating product. After being heated, it forms an aerosol, and then flows through the tubular element to the filter section for the consumer to inhale.

7. The aerosol-generating product according to claim 6, characterized in that, An air inlet is provided at one end of the tubular element near the filter section; When the aerosol-generating product is inhaled using a heated fume device, the air inlet is located outside the heated fume device, and the upstream element can fit tightly against the heated fume device. In this case, there are two paths for the external airflow: One method involves the external airflow entering through the gap between the aerosol generating product and the heated smoking device, passing through the first forming paper into the aerosol generating product, forming an aerosol after heating, and then flowing through the tubular element to the filter section for consumers to inhale. Another method involves the external airflow entering the tubular element through the air inlet and then passing through the filter section to cool the aerosol and prevent burns to consumers.

8. The aerosol-generating product according to claim 7, characterized in that, The air intake holes are at least two in number, and the shape of the air intake holes is a round hole, a strip hole, or an irregularly shaped hole; The material of the first formed paper is one or more combinations of softwood pulp, hardwood pulp, hemp fiber and resin.

9. The aerosol-generating product according to claim 8, characterized in that, The filter section, the tubular element, the aerosol generating matrix section, and the upstream element are sequentially connected using the second forming paper and the first forming paper to form an integral cigarette-shaped cylinder.

10. The aerosol-generating article according to claim 8, characterized in that, When the axial length of the aerosol generating matrix section covered by the first forming paper is equal to the axial length of the aerosol generating matrix section, the axial length of the second forming paper covered by the second forming paper is equal to the sum of the axial lengths of the filter section and the tubular element. The first forming paper and the second forming paper are further covered with a tipping paper, which is airtight, and the axial length of the tipping paper is equal to the sum of the axial lengths of the first forming paper and the second forming paper.

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