AEROSOL-GENERATING ARTICLE WITH SEGMENTED AEROSOL-GENERATING SUBSTRATE ROD

Description

TECHNICAL FIELD

[0001] The present invention relates to the technical field of heat-not-burning cigarettes, in particular to an aerosol generating product with a sectional aerosol generating substrate rod.BACKGROUND

[0002] With the increasing attention of consumers to health issues and the increasing demand for personalized experience of cigarette products, the tobacco industry continues to respond to consumer demand upgrades and develop various smoking products with reduced coke and harm. Heated cigarettes, due to their different cigarette heating modes from traditional cigarette products, can provide a healthier smoking experience while meeting the sensory demands of the consumers for the cigarette products.

[0003] A smoke producing material of particulate heated cigarettes is loose smoke producing particles. In the prior art, because the loose smoke producing particles cannot be fixed and must be loaded into an outer tube in a filling mode, and particles on two sides of a smoke producing particle section need to be fixed in a mode of sealing paper and a plugging part, production efficiency is low, and a defective rate is high.

[0004] Firstly, based on this, the present invention binds the loose smoke producing particles together through an adhesive to form a cylindrical aerosol generating substrate rod. Then, the aerosol generating substrate rod is wrapped with an outer tube, and is then used as a solid aerosol generating substrate rod separately. Then, the solid aerosol generating substrate rod is combined with other elements through a filling, rolling, or composite process to produce an aerosol generating product. Due to the fact that this kind of smoke producing section is already a whole cylindrical aerosol generating substrate rod, there will be no problem of falling and scattering of the smoke producing particles, so there is no need to arrange sealing films or plugging parts on both sides of the smoke producing section. In addition, it is not limited to combine the aerosol generating substrate rod with other elements to produce the aerosol generating product in the filling form.

[0005] At present, the method of preparing the cylindrical aerosol generating substrate rod by bonding the scattered smoke producing particles with the adhesive is to directly place the scattered tobacco particles in a mixer, add a large amount of adhesives to the mixer, stir and mix evenly, and then extrude and cool. The problems of the aerosol generating substrate rod prepared by this method are: 1, due to the addition of the large amount of adhesives in the stirring process, there is also a cooled adhesive in a gap between the adjacent tobacco particles in the aerosol generating substrate rod after cooling, which leads to low porosity and low axial permeability of the aerosol generating substrate rod; 2, if, in order to avoid the first problem, a small amount of adhesive is added directly in the stirring and mixing process, it will lead to uneven dispersion of the adhesive, and tobacco particles with no glue applied on the surfaces are adjacent, resulting in the inability to bond and the problem of scattering of the smoke producing particles; and 3, another more critical problem is that the addition of the large amount of adhesives may further lead to the application of a large amount of adhesives on the surface of each tobacco particle, seriously affecting the release of aerosol after the tobacco particles are heated. Essentially, the purpose of gluing is only to make scattered tobacco particles bond, but it is not desirable for places where the tobacco particles do not bond to be glued, which affects the aerosol release.

[0006] Therefore, how to ensure that there are the adhesives on the surfaces of the tobacco particles that are bonded to each other, while there is no adhesive on the surfaces of the tobacco particles that are not bonded, is the key to ensuring the porosity and the smoke amount of the aerosol generating substrate rod.

[0007] WO2020 / 089091A1 discloses an aerosol generating product in which the aerosol forming substrate is bonded together by a binder; in particular , this document shows and describes a product comprising the features mentioned in the preamble of the present claim 1. In WO2020 / 089091A1, there is still a problem with the presence of adhesives on the non-bonding surface of tobacco particles, which can affect the release of aerosols.

[0008] US1920708A discloses a tobacco stick with varying density, with a greater end density for easy cutting. The issue of binders remaining on the non-bonded surface of tobacco particles, which can affect the release of aerosols, is not addressed in US1920708A.

[0009] In order to solve the above problems, the present invention is proposed.SUMMARY

[0010] The present invention provides an aerosol generating product as defined in claim 1.

[0011] Preferably, a mass ratio of the tobacco particles at the short rod sections to the tobacco particles at the scattered particle section is in a range from 1:10 to 1:1, and a mass ratio of tobacco particles to an adhesive in a glued region is in a range from 1:1 to 1:4. More preferably, the mass ratio of the tobacco particles at the short rod sections to the tobacco particles at the scattered particle section is 1:6. More preferably, the mass ratio of the tobacco particles to the adhesive in the glued region is 1:3.

[0012] Preferably, a gluing area of tops of the tobacco particles in the glued region accounts for 30-60% of surface areas of the tobacco particles. That is to say, the glued tobacco particles in the glued region are only glued at the tops, and are not glued on sides and bottom surfaces.

[0013] Preferably, porosity of the sectional aerosol generating substrate rod is in a range from 40% to 80%, and axial suction resistance of the sectional aerosol generating substrate rod is in a range from 5 Pa / mm to 40 Pa / mm. More preferably, the porosity of the sectional aerosol generating substrate rod is 60%. More preferably, the axial suction resistance of the sectional aerosol generating substrate rod is 15 Pa / mm.

[0014] Preferably, a gram weight of the anti-seepage / heat-conduction paper is in a range from 30 g / m 2< to 70 g / m 2< . More preferably, the gram weight of the anti-seepage / heat-conduction paper is 60 g / m 2< . On the one hand, the anti-seepage cigarette paper can roll and wrap the tobacco particles. On the other hand, the gram weight of the anti-seepage cigarette paper may be selected to be larger, which can also play a role in maintaining roundness of the sectional tobacco rod after rolling.

[0015] Preferably, a particle size of the tobacco particles is in a range from 8 meshes to 60 meshes. More preferably, the particle size of the tobacco particles is in a range from 20 meshes to 30 meshes.

[0016] The adhesive is selected from chitosan, hydroxyethylated compound modified ethyl cellulose, guar gum, carboxymethyl cellulose, starch, modified starch, plant cellulose, microcrystalline cellulose, hydroxyethyl cellulose, and hydroxyethyl methyl cellulose.

[0017] Preferably, a tube wall of the ventilation section 2 is made of paper, silica gel, acetate fiber, polylactic acid, and non-woven fabric.

[0018] Preferably, the ventilation section 2 is in a shape of a grooved flute or a gear, has a small hole airflow channel 21 that is circumferentially distributed and penetrates through the ventilation section 2, and also has a large hole airflow channel 22 that penetrates through the ventilation section 2 at an axial center. A structure of the ventilation section in the shape of the grooved flute may refer to a patent, with an application number 2021111148695 and a title: aerosol generating product for adding fragrance to cigarette core section, applied by the present applicant. At the same time, the description about the ventilation section in the shape of the grooved flute involved in the application is incorporated into the present application. A structure of the ventilation section in the shape of the gear may refer to a patent, with an application number 2021111166585 and a title: aerosol generating product for adding fragrance to punctured cigarette core section, applied by the present applicant. At the same time, the description about the ventilation section in the shape of the gear involved in the application is incorporated into the present application.

[0019] Preferably, a tube wall of the ventilation section 2 has an air vent 23, with an area of 1 / 2-7 / 8 of a cross-sectional area of a filter tip.

[0020] Preferably, the forming paper 5 and the tipping paper 4 are naturally breathable.

[0021] Preferably, the aerosol generating product further includes a functional section 6, located between the smoke producing core material section 1 and the ventilation section 2, or between the ventilation section 2 and the filtering section 3, and the functional section 6 has effects of cooling and gathering smoke; and when the functional section 6 is located between the ventilation section 2 and the filtering section 3, the functional section 6 may be a hollow tube, a tube wall of the hollow tube is breathable, and the hollow tube may have a breathable function by itself or be breathable through punching holes in the tube wall. A structure and a preparation method of the hollow tube with the naturally breathable tube wall may refer to the patent, with an application number 2021105997045 and a title: heated cigarette filter rod with naturally breathable function and heated cigarette containing same, applied by the present applicant. At the same time, the description about the hollow tube with the naturally breathable tube wall involved in the application is incorporated into the present application.

[0022] Preferably, conventional solid acetate fiber tows may be selected as the filtering section 3.

[0023] The present invention has a preparation method for the sectional aerosol generating substrate rod. A spray gluing method is used, and the adhesive is sprayed directly from a spray head at the tops of the tobacco particles to the tops of the tobacco particles evenly, which may ensure that the tobacco particles are only glued at the tops, and not glued on the bottom surfaces and the sides. On the basis of achieving bonding, release of aerosol after the tobacco particles are heated is ensured, and the amount of smoke, as well as an axial ventilation capacity and porosity of the aerosol generating substrate rod are ensured.

[0024] Furthermore, the spray gluing method of the present invention is intermittent spray gluing, so that the tobacco particles on the anti-seepage cigarette paper present interval arrangement of a glued region, an unglued region, and the glued region. Then, glued tobacco particles, unglued tobacco particles, and the glued tobacco particles are loaded into an outer tube in batches by using a dropping method, and after cooling, the sectional aerosol generating substrate rod with short rod sections formed by the bonding of the glued tobacco particles at two ends and a scattered particle section formed by the unglued tobacco particles in the middle is obtained. In this way, the short rod sections at the two ends may ensure that the unbound tobacco particles in the middle do not fall or scatter, while the unbound tobacco particles in the middle further ensures an axial ventilation capacity and porosity of the aerosol generating substrate rod.

[0025] A method for preparing a sectional aerosol generating substrate rod by using intermittent spraying includes the following steps: (1) taking anti-seepage cigarette paper, laying the anti-seepage cigarette paper flat on a conveyor belt, then taking tobacco particles, and laying the tobacco particles flat on the anti-seepage cigarette paper, so that the conveyor belt carries the anti-seepage cigarette paper and the tobacco particles at a fixed speed to run; (2) providing a spray head for spraying an adhesive on an upper portion of the conveyor belt, and intermittently spraying, by the spray head, the adhesive onto tops of the tobacco particles, so that the tobacco particles on the anti-seepage cigarette paper present interval arrangement of a glued region, an unglued region, and the glued region; and (3) providing a cigarette folding and rolling device at downstream in a running direction of the conveyor belt, as the conveyor belt runs, wrapping, by the cigarette folding and rolling device, the anti-seepage cigarette paper conveyed by the conveyor belt around the tobacco particles, rolling it to obtain a sectional aerosol generating substrate rod strip, and then cutting the sectional aerosol generating substrate rod strip according to the demand so as to obtain the sectional aerosol generating substrate rod for an aerosol generating product.

[0026] Preferably, a running speed of the conveyor belt in step (1) is in a range from 0.5 centimeter per second to 2.5 centimeters per second, and more preferably, the running speed of the conveyor belt in step (1) is 2 centimeters per second.

[0027] Preferably, a spraying procedure of the spray head in step (2) is to spray 0.5 second to 2 seconds every 1 second to 5 seconds, and more preferably, the spraying procedure of the spray head in step (2) is to spray 1 second every 5 seconds.

[0028] The anti-seepage / heat-conduction paper in the present invention has an anti-seepage / heat-conduction layer with an anti-seepage or heat conduction function, and the anti-seepage / heat-conduction layer includes a waterproof layer and / or an oil proof layer and / or a heat conduction layer; and the waterproof layer adopts a mixture of alkyl ketene dimer (AKD), cationic rosin size or iron-free aluminum sulfate and a paraffin material; and the oil proof layer adopts a mixture of carbon fluorine organic matter, modified starch, AKD and paraffin, and a mixture material of the AKD and the modified starch. The heat conduction layer is selected from, but is not limited to an aluminum foil layer, which is added to an inner wall of a cigarette paper tube in a pasting manner; and the aluminum foil layer may play a waterproof and / or oil proof role, and meanwhile, the aluminum foil layer further has heat conduction and heat preservation effects, so that a smoke producing material on inner walls of cigarettes is evenly heated.

[0029] Preferably, the inner wall of the cigarette paper tube is coated with the waterproof layer and / or the oil proof layer in a spraying manner.

[0030] In a storage process of the cigarettes, moisture inside the smoke producing material seeps into an outer side of the cigarette paper tube, causing yellow spots. Therefore, it is necessary to add the waterproof layer to the inner wall of the cigarette paper tube filled with the smoke producing material. The waterproof layer adopts the mixture of the alkyl ketene dimer (AKD), the cationic rosin size or the iron-free aluminum sulfate and the paraffin material, which can prevent the moisture inside the smoke producing material from seeping into the outer side of the cigarette paper tube.

[0031] Similarly, a smoke producing agent, essence and spices will be added to the smoke producing material. In a long-term placing process, the smoke producing agent in the smoke producing material will carry the essence and spices to seeping to the outer side of the paper tube, causing the yellow spots, which affects the appearance of the paper tube. Since the smoke producing agent is oily, it is necessary to add the oil proof layer on the inner wall of the cigarette paper tube filled with the smoke producing material. The oil proof layer adopts the mixture of the carbon fluorine organic matter, the modified starch, the AKD and the paraffin, and the mixture material of the AKD and the modified starch, which can prevent the smoke producing agent in the smoke producing material from carrying the essence and spices to seeping to the outer wall of the paper tube, and prevent generation of the yellow spots.

[0032] Compared to the prior art, the present invention has the following beneficial effects: 1. the aerosol generating product of the present invention includes and has the sectional aerosol generating substrate rod, the two ends of the sectional aerosol generating substrate rod are the short rod sections 11 formed by bonding of the glued tobacco particles, and the middle is the scattered particle section 12 formed by the non-glued tobacco particles. In this way, the short rod sections 11 at the two ends may ensure that the unbound tobacco particles in the middle do not fall or scatter, and there is no adhesive on the surfaces and the gaps of the unbound tobacco particles in the middle, which further ensures the axial ventilation capacity, the porosity, and a smoke release amount of the aerosol generating substrate rod. A smoke core with the high porosity can not only increase a smoke producing amount, but also simplify a structure of the aerosol generating product. 2. The preparation method of the smoke producing core material section 1 with the high porosity of the present invention is the intermittent spray type, and has the advantages that: 1), the present invention adopts the spray gluing method, the adhesive is sprayed directly from the spray head at the tops of the tobacco particles onto the top surfaces of the tobacco particles evenly, which may ensure that the tobacco particles are only glued at the tops, and are not glued on the bottom surfaces and the sides. The gluing area of the top surfaces of the tobacco particles accounts for 20-40% of the surface areas of the tobacco particles. After stirring evenly, part of the surface region of at least one of the two adjacent tobacco particles has the adhesive and can be bonded. Similarly, since the bottom surfaces and the sides of tobacco particles are not glued, which can well ensure the release of the aerosol from the tobacco particles after being heated, and ensure the smoke amount, as well as the axial ventilation capacity and the porosity of the aerosol generating substrate rod. 2), furthermore, the spray gluing method of the present invention is intermittent spray gluing, the tobacco particles of the present invention are directly laid flat on the conveyor belt, and there is only one layer of tobacco particles on the conveyor belt. The conveyor belt carries the tobacco particles at the fixed speed to run, the upper portion of the conveyor belt has the spray head for spraying the adhesive, and the spray head intermittently sprays the adhesive onto the top surfaces of the tobacco particles, so that the tobacco particles on the conveyor belt present interval arrangement of the glued region, the unglued region, and the glued region. Finally, the glued tobacco particles, the unglued tobacco particles, and the glued tobacco particles are loaded into the outer tube in batches by using a dropping method, and after cooling, the sectional aerosol generating substrate rod is obtained. The two ends of the sectional aerosol generating substrate rod are the short rod sections 11 formed by the bonding of the glued tobacco particles, while the middle is the scattered particle section 12 formed by the unglued tobacco particles. In this way, the short rod sections 11 at the two ends may ensure that the unbound tobacco particles in the middle do not fall or scatter, while the unbound tobacco particles in the middle further ensures the axial ventilation capacity and the porosity of the aerosol generating substrate rod.

[0033] In general, the present invention first adopts the spray gluing method to achieve partial gluing on the surfaces of tobacco particles, and ensure the release of the aerosol after the tobacco particles are heated. Furthermore, by combining intermittent spray gluing and dropping, the sectional aerosol generating substrate rod with the short rod sections 11 formed by the bonding of the glued tobacco particles at two ends and the scattered particle section 12 formed by the unglued tobacco particles in the middle may be prepared. In this way, the short rod sections 11 at the two ends may ensure that the unbound tobacco particles in the middle do not fall or scatter, while the unbound tobacco particles in the middle further ensures the axial ventilation capacity, porosity and the smoke amount of the aerosol generating substrate rod.BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Fig. 1 is a schematic structural diagram of an aerosol generating product with a sectional smoke core section in Embodiment 1. Names of reference numerals in accompanying drawing description: 1-Smoke producing core material section, 2-Ventilation section, 3-Filtering section, 4-Tipping paper, 5-Forming paper, 11-Short rod section, 12-Scattered particle section, 21-Small hole airflow channel, 22-Large hole airflow channel, and 23-Air vent. Fig. 2 is a schematic diagram of a spray gluing process in a process of preparing a sectional aerosol generating substrate rod by intermittent spraying. Fig. 3 is a top view of tobacco particles after a spray gluing process. Fig. 4 is a schematic structural diagram of a sectional aerosol generating substrate rod. Names of reference numerals in accompanying drawing description: S1-Conveyor belt, S2-Spray device, S3-Sprayed adhesive, S4-Tobacco particle, S5-Sectional aerosol generating substrate rod, S6-Airflow channel, S7-Anti-seepage cigarette paper, S41-Glued tobacco particle, S42-Unglued tobacco particle, S51-Short rod section formed by bonding of glued tobacco particles, and S52-Scattered particle section formed by unglued tobacco particles. Fig. 5 is a schematic structural diagram of an aerosol generating product with a sectional aerosol generating substrate rod in Embodiment 2. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below with reference to embodiments.

[0036] Those skilled in the art will understand that the following embodiments are only used to illustrate the present invention and should not be regarded as limiting the scope of the present invention. If the specific technology or conditions are not specified in the embodiments, please follow the technology or conditions described in the literature in this field or follow the product manual. Materials or equipment used without specifying the manufacturer are conventional products that can be obtained through purchase.

[0037] Those skilled in the art may understand that unless expressly stated, singular forms "one", "a", "the said" and "this" used here may also include plural forms. It should be further understood that the wording "include" used in the specification of the present invention refers to existence of a feature, an integer, a step, an operation, an element and / or a component, but not excluding existence or adding of one or more other features, integers, steps, operations, elements, components and / or their combinations. It should be understood that when we called that an element is "connected" to the other element, it can be directly connected to the other element, or there may be an intermediate element. In addition, "connection" used here may include a wireless connection.

[0038] In the description of the present invention, unless otherwise noted, the meaning of "a plurality of" is two or more. Orientation or a state relationship indicated by the terms "inner", "upper", "lower" and the like is orientation or a state relationship shown on the basis of the accompanying drawings, is only to facilitate description of the present invention and simplify the description, rather than indicating or implying that the indicated apparatus or element must have a specific orientation or be constructed and operated in the specific orientation, and therefore cannot be understood as limitation to the present invention.

[0039] In the description of the present invention, it should be noted that unless otherwise expressly stated and limited, the terms "install", "connect" and "provided with" should be understood in a broad sense, for example, they may be a fixed connection, or a detachable connection, or an integrated connection; may be a mechanical connection, or an electrical connection; and may be a direct connection, or an indirect connection through an intermediate medium. Those ordinarily skilled in the art understand the specific meaning of the above terms in the present invention according to the specific situation.

[0040] It may be understood by those skilled in the art that unless otherwise defined, all the terms (including technical terms and scientific terms) used herein have the same meanings generally understood by those ordinarily skilled in the art to which the present invention belongs. It should be further understood that those terms, such as defined in a general dictionary, should be understood as having meanings consistent with meanings in the context of the prior art, and are not explained with idealized or excessively official implication unless defined like here.Embodiment 1

[0041] This embodiment is an aerosol generating product with a sectional aerosol generating substrate rod, including a smoke producing core material section 1, a ventilation section2, and a filtering section 3, wherein the smoke producing core material section 1 includes the sectional aerosol generating substrate rod and anti-seepage / heat-conduction cigarette paper wrapped around the sectional aerosol generating substrate rod, two ends of the sectional aerosol generating substrate rod are short rod sections 11 formed by bonding of glued tobacco particles, and a middle is a scattered particle section 12 formed by non-glued tobacco particles; and the ventilation section 2 and the filtering section 3 are wrapped with forming paper 5 to form a mouthpiece, and the smoke producing core material section 1 and the mouthpiece are tipped by tipping paper 4.

[0042] A tube wall of the ventilation section 2 is made of paper, and is in a shape of a grooved flute. The tube wall of the ventilation section 2 has an air vent 23, with an area of 1 / 4 of a cross-sectional area of a filter tip.

[0043] As shown in Figs. 2-4, a method for preparing a sectional aerosol generating substrate rod by using intermittent spraying includes the following steps: (1) anti-seepage cigarette paper is taken and laid flat on a conveyor belt S1, and then tobacco particles S4 are taken and laid flat on the anti-seepage cigarette paper S7, so that the conveyor belt S1 carries the anti-seepage cigarette paper S7 and the tobacco particles S4 at a fixed speed to run; (2) an upper portion of the conveyor belt S1 has a spray head (a spray device) S2 for spraying an adhesive, and the spray head intermittently sprays the adhesive S3 onto tops of the tobacco particles, so that the tobacco particles on the anti-seepage cigarette paper S7 present interval arrangement of a glued region, an unglued region, and the glued region; and (3) the conveyor belt has a cigarette folding and rolling device at downstream in a running direction, as the conveyor belt runs, the cigarette folding and rolling device wraps the anti-seepage cigarette paper conveyed by the conveyor belt around the tobacco particles, and rolls it to obtain a sectional aerosol generating substrate rod strip, and then the sectional aerosol generating substrate rod strip is cut according to the demand so as to obtain the sectional aerosol generating substrate rod S5 for an aerosol generating product. A gap between the tobacco particles in the sectional aerosol generating substrate rod forms an airflow channel S6 that axially penetrates through the sectional aerosol generating substrate rod.

[0044] Two ends of the sectional aerosol generating substrate rod are short rod sections S51 formed by bonding of glued tobacco particles, and a middle is a scattered particle section S52 formed by the non-glued tobacco particles. A mass ratio of the tobacco particles at the short rod sections to the tobacco particles at the scattered particle section is 1:6.

[0045] The mass ratio of the tobacco particles to the adhesive in a glued region is 1:3. A running speed of the conveyor belt in step (1) is 2 centimeters per second. A spraying procedure of the spray head in step (2) is to spray for 1 second every 5 seconds. In step (2), a gluing area of tops of the tobacco particles in the glued region accounts for 50% of surface areas of the tobacco particles. That is to say, the glued tobacco particles in the glued region are only glued at the tops, and are not glued on the sides and bottom surfaces. A gram weight of the anti-seepage / heat-conduction paper is 60 g / m 2< .

[0046] A particle size of the tobacco particles is in a range from 20 meshes to 30 meshes. The adhesive is selected from carboxymethyl cellulose.

[0047] After measurement, porosity of the sectional aerosol generating substrate rod finally obtained is 60%. An axial suction resistance of the sectional aerosol generating substrate rod is 20 Pa / mm.Embodiment 2

[0048] As shown in Fig. 5, this embodiment is an aerosol generating product with a sectional aerosol generating substrate rod. A preparation method of the aerosol generating substrate rod is the same as that of Embodiment 1, with the only difference being a cigarette structure. In this embodiment, the aerosol generating product adds a functional section 6 on the basis of Embodiment 1. When the functional section 6 is located between a ventilation section 2 and a filtering section 3, the functional section 6 may be a hollow tube, and a tube wall of the hollow tube is breathable.Comparative Example 1

[0049] A structure of an aerosol generating product is the same as that of Embodiment 1.

[0050] Scattered tobacco particles are directly placed in a mixer, then a large amount of binders is added to the mixer, and a mixture is stirred and mixed evenly, and then extruded and cooled.

[0051] Surfaces of smoke producing particles in a finally obtained aerosol generating substrate rod is almost 100% glued, after measurement, porosity is less than 30%, and an axial suction resistance is up to 100 Pa / mm.

Claims

1. An aerosol generating product with an aerosol generating substrate rod, said product comprising a smoke producing core material section (1), a ventilation section (2), and a filtering section (3), wherein the smoke producing core material section (1) and a mouthpiece are tipped by tipping paper (4), wherein the smoke producing core material section (1) comprises said aerosol generating substrate rod and cigarette paper wrapped around the aerosol generating substrate rod, wherein the cigarette paper is an anti-seepage cigarette paper including a waterproof layer and / or an oil proof layer, characterized in that the cigarette paper is a heat conducting cigarette paper having a heat-conduction layer, wherein the aerosol generating substrate rod is a sectional aerosol generating substrate rod, wherein two ends of the sectional aerosol generating substrate rod are short rod sections (11) formed by bonding of glued tobacco particles, and a middle is a scattered particle section (12) formed by non-glued tobacco particles; and the ventilation section (2) and the filtering section (3) are wrapped with forming paper (5) to form the mouthpiece.

2. The aerosol generating of claim 1, characterized in that a mass ratio of the tobacco particles at the short rod sections (11) to the tobacco particles at the scattered particle section (12) is in a range from 1:10 to 1:1, and a mass ratio of tobacco particles to an adhesive in the short rod sections (11) is in a range from 1:1 to 1:4.

3. The aerosol generating product of claim 2, characterized in that a gluing area of tops of the tobacco particles in the short rod sections (11) accounts for 30-60% of surface areas of the tobacco particles.

4. The aerosol generating product of claim 1, characterized in that porosity of the sectional aerosol generating substrate rod is in a range from 40% to 80%, and axial suction resistance of the sectional aerosol generating substrate rod is in a range from 5 Pa / mm to 40 Pa / mm.

5. The aerosol generating product of claim 1, characterized in that a gram weight of the cigarette paper is in a range from 30 g / m2 to 70 g / m2.

6. The aerosol generating product of claim 1, characterized in that a particle size of the tobacco particles is in a range from 8 meshes to 60 meshes; and the adhesive is selected from chitosan, hydroxyethylated compound modified ethyl cellulose, guar gum, carboxymethyl cellulose, starch, modified starch, plant cellulose, microcrystalline cellulose, hydroxyethyl cellulose, and hydroxyethyl methyl cellulose.

7. The aerosol generating product of claim 1, characterized in that a tube wall of the ventilation section (2) is made of paper, silica gel, acetate fiber, polylactic acid, and non-woven fabric.

8. The aerosol generating product of claim 1, characterized in that the ventilation section (2) is in a shape of a grooved flute or a gear, has a small hole airflow channel (21) that is circumferentially distributed and penetrates through the ventilation section (2), and also has a large hole airflow channel (22) that penetrates through the ventilation section (2) at an axial center; and a tube wall of the ventilation section (2) has an air vent (23), with an area of 1 / 2-7 / 8 of a cross-sectional area of a filter tip.

9. The aerosol generating product of claim 1, characterized in that the forming paper (5) and the tipping paper (4) are breathable.

10. The aerosol generating product of claim 1, characterized in that the aerosol generating product further comprises a functional section (6), located between the smoke producing core material section (1) and the ventilation section (2), or between the ventilation section (2) and the filtering section (3), and the functional section (6) has effects of cooling and gathering smoke; and when the functional section (6) is located between the ventilation section (2) and the filtering section (3), the functional section (6) may be a hollow tube, a tube wall of the hollow tube is breathable, and the hollow tube may have a breathable function by itself or be breathable through punching holes in the tube wall.