CN216961482U - Dual particle aerosol generating article - Google Patents

Abstract

The utility model discloses a double-particle aerosol generating product, which comprises a filtering part (1), a groove corrugated part (2), a particle unit (3) and a gathering part (4) which are sequentially arranged from a near lip end to a far lip end, wherein an outer tube (5) is arranged outside each part; the flute corrugated component (2) is provided with a flute corrugated structure (21) and a hollow cavity (22); the gathering component (4) is a cylindrical rod formed by gathering; the granule unit (3) comprises a first granule containing chamber adjacent to the gathering member (4) and a second granule containing chamber adjacent to the fluted corrugating member (2), the first granule containing chamber containing a plurality of aerosol source material granules (31) and the second granule containing chamber containing a plurality of flavouring granules (32). The aerosol-generating article of the utility model eliminates the multi-aperture fastener section and the sealing membrane, while still providing end-on confinement of the aerosol source material particles (31) by the flavour enhancing particles (32) and the focusing member (4).

Description

Dual particle aerosol generating article

Technical Field

The present invention is in the field of aerosol-generating articles, in particular aerosol-generating articles using particles of aerosol-source material, and more particularly relates to a dual particle aerosol-generating article.

Background

Particle-type aerosol-generating articles are a new type of heated non-combustion (HNB) aerosol-generating articles in recent years, which use particles of aerosol-source material as an aerosol-generating material instead of a sheet of aerosol-source material, and the particles of aerosol-source material are heated more uniformly than the sheet of aerosol-source material, and the aerosol diffuses more smoothly along the gaps between the particles than along the sheet-type material, and thus are very popular with consumers.

Aerosol-generating articles of the particulate type are known products on the market and their structure is illustrated with reference to figure 1: the main structure of the aerosol source material aerosol generating device is an integral outer sleeve X1, the far lip end of the integral outer sleeve is sealed by a sealing film X2, then particles X3 of the aerosol source material are filled into the integral outer sleeve to form a particle section, a multi-hole fixing section (commonly called a gear piece) X4 is arranged at the downstream of the particle section, then an airflow channel section X5 is reserved for collecting and containing aerosol (sometimes the airflow channel section X5 is a single section of cavity, or sometimes the airflow channel section X5 is a hollow rod), and a filter section X6 is arranged at the downstream of the airflow channel section X5 and is used as a cigarette holder for holding in the mouth of a user. The aerosol-generating article is in use inserted with the distal lip end into a heating device having a heating element which heats particles of aerosol source material to release gaseous flavour components which condense into a macroscopic aerosol on exposure to cold air in the airflow passage segment X5, which aerosol is then filtered through the filter segment and into the mouth of a user.

The airflow channel segment X5 is crucial for aerosol formation, and according to the theory of aerosol science, the gaseous flavor component released by heating needs to be cooled to be condensed into solid or liquid particles, and the solid or liquid particles need to be suspended in the air to form aerosol (commonly called "smoke" or "fog" or "smoke" in general) visible to the naked eye. Therefore, in existing particle-type aerosol-generating articles, the airflow channel segment X5 must be left.

Furthermore, because the particles are loose and fluid, if not constrained, they can inevitably flow on a large scale to the downstream airflow path segment X5 when the aerosol-generating article is placed horizontally or inverted, resulting in a substantial reduction in the number of particles that can be directly heated by the heating element, and naturally the amount of flavour released and subsequently generated aerosol will also be reduced, and to ensure that the particles are sufficiently heated, the particles must be constrained within a confined space adjacent the heating element. This confinement is currently achieved by placing a sealing film X2 upstream of the pellet section and providing a multi-ported fastener section X4 downstream of the pellet section, with the two ends being confined so that pellets do not flow around.

The sealing film X2 is usually made of high-permeability thin paper and then adhered to the upstream end face of the outer sleeve X1 by an adhesion method, and the adhering process of the sealing film X2 is complex and low in efficiency, and special sealing film adhering equipment is needed. In addition, because the end face of the outer sleeve X1 is not on the same plane, burrs and the like exist, the surface of the thin paper has defects, the gluing is not uniform and the like, the sealing film is not firmly adhered, the sealing film for sealing the cigarette branch opening is degummed in the subsequent production process, the leakage of the internal storage granular material is caused, the production environment is polluted, certain other materials are lost, and the production efficiency is influenced. The existing granular heating cigarette is manufactured by adopting a mode of sealing by a sealing film and filling granules. The problems of low automation degree, low sealing success rate (and difficult detection) and low cigarette production efficiency exist. When the cigarette is used, the sealing film is punctured for heating, particles are spilled out after a cigarette is pulled out of the smoking set, and the smoking set is difficult to clean.

Wherein the multi-ported fastener segment X4 is typically ceramic or silicone and has an outer wall which is fixedly attached to the inner wall of the paper sleeve by an adhesive and has at least one axial through hole X41 in its center and/or at least one peripheral vent groove X42 in its outer periphery which are sized to allow passage of smoke but not particles of the aerosol source material, thereby both blocking the particles of the aerosol source material and transmitting the smoke. However, the presence of the multi-aperture fastener segment adds cost and operational inconvenience to the commercial manufacture of particulate aerosol-generating articles and it is therefore a continuing desire of those skilled in the art to eliminate the multi-aperture fastener segment. However, eliminating the multi-ported fastener segment necessitates the placement of a gas flow channel segment downstream of the particle segment to collect and contain the aerosol, and this segment also serves to confine the aerosol source material particles that are scattered, presenting a dilemma.

Therefore, how to eliminate the sealing film and the multi-hole fastener section, and to accomplish the constraint of the scattered aerosol source material particles and ensure that the generated aerosol can be smoothly sent to the filter section is a problem which people want to solve urgently.

The present invention is directed to solving the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a double-particle aerosol generating product, which comprises a filtering component 1, a groove corrugated component 2, a particle unit 3 and a gathering component 4 which are sequentially arranged from a near lip end to a far lip end, wherein an outer pipe 5 is arranged outside each component;

the groove corrugated part 2 is a cylinder surrounded by a first sheet material with a groove corrugated structure 21 and provided with a hollow cavity 22, and a first air flow channel 23 axially penetrating through the groove corrugated structure 21 is formed between the groove corrugated structure 21 and the outer pipe 5;

the gathering component 4 is a cylindrical rod formed by gathering the second sheet;

the particle unit 3 comprises a first particle containing cavity close to the gathering part 4 and a second particle containing cavity close to the corrugated part 2, wherein a plurality of aerosol source material particles 31 are contained in the first particle containing cavity, a plurality of flavoring particles 32 are contained in the second particle containing cavity, the radial size of each flavoring particle 32 is smaller than the diameter of the hollow cavity 22, and the radial size of each aerosol source material particle 31 is smaller than the radial size of each flavoring particle 32. The radial dimension of the individual particles 31 of aerosol source material is smaller than the longest radial distance of the fragrancing particles 32 and the interstices between the fragrancing particles 32.

Wherein the plurality of aerosol source material particles 31 are stacked to form a shape that is the shape of the first particle receiving chamber and the plurality of fragranced particles 32 are stacked to form a shape that is the shape of the second particle receiving chamber.

Preferably, the shape of the grooves in the groove corrugation structure 21 is selected from, but not limited to, "V" or "U".

The upstream and downstream referred to in the present invention are defined in terms of the gas flow direction. More specifically, the distal labial end is upstream and the proximal labial end is downstream.

The sequential arrangement in the utility model is not limited to the tight connection of the two, but only the sequential limitation. That is, other forms of cells may be inserted between any two of the filter member 1, the fluted corrugated member 2, the granular cells 3, and the bunching member 4.

The process of manufacture of the dual particle aerosol-generating article of the utility model is not limited and may be in the form of a fill, i.e. the components are sequentially filled into the outer tube 5, or in the form of a compound wrap, i.e. the units are arranged sequentially and then the outer tube 5 is formed by a wrap-rolling process. The material of the outer tube 5 is selected from, but not limited to, paper, ceramic, temperature resistant resin or clay.

The corrugated part of the groove is used as the hollow section, which has great advantages in that the corrugated part of the groove can support the outer pipe and can not axially block smoke; secondly, the existing preparation process of the structure is mature, the structure is filled into an outer tube or wrapped by forming paper to form the outer tube, and the process is simple and mature. In addition, the hollow cavity formed in the device can well gather aerosol. But the problem that exists at present is that the fluted corrugated members cannot be used together with the aerosol source material particles in bulk, if the two are to be combined, the aforesaid multi-porous fixture must be arranged between them, and the present invention combines the fluted corrugated members with the aerosol source material particles in bulk for the first time, and in order to prevent the aerosol source material particles in bulk from dropping into the fluted corrugated members, adds the aroma particles with larger size between the aerosol source material particles, and since the particle unit 3 comprises a plurality of aerosol source material particles 31 and a plurality of aroma particles 32, the radial size of the aroma particles 32 is smaller than the diameter of the hollow cavity 22, the radial size of the aerosol source material particles 31 is smaller than the longest radial distance of the gaps between the aerosol source material particles and the aroma particles, the aroma particles can block the aerosol source material particles from moving downstream, while the fluted corrugated member can resist downstream migration of the fragranced particles. In order to ensure that the smoke amount of aerosol source material particles is as much as possible after the aerosol source material particles are heated and the preheating time is as short as possible, the size of the aerosol source material particles is ensured to be as small as possible, and the aerosol source material particles with too small size can move to the downstream groove corrugated parts when an aerosol generating product is horizontally placed, inverted or inclined. The other end of the aerosol generating product directly selects the gathering part 4 to restrain aerosol source material particles, the gathering part 4 can be directly arranged in the outer tube 5 in a filling or composite mode, equipment for adhering a sealing film is not needed, and the problems that the sealing film is not firmly adhered and falls off are avoided.

Preferably, said second sheet is gathered disorderly or orderly to form said gathering member 4. The disordered gathering refers to gathering a sheet material into a round bar at random, and the orderly gathering refers to regularly folding and gathering along a folding line or towards a certain direction.

Preferably, an inner tube 24 is also provided within the hollow cavity 22, the closure 24 being located within the inner tube 24.

Wherein the hollow cavity 22 serves as a second air flow passage. The first air flow channel 23 and the second air flow channel together serve the purpose of collecting and containing the aerosol and ensuring that the generated aerosol can be smoothly sent to the filter section.

Preferably, a third airflow channel is formed between the gathering part 4 and the outer tube, and between the gathered second sheet material and the second sheet material.

Preferably, the radial dimension of the smallest of the aerosol source material particles 31 is smaller than the longest radial distance in the third air flow channel, so that the aerosol source material particles 31 do not fall through the third air flow channel into the bunching member 4.

Preferably, the outer tube 5 is selected from air-permeable materials such as air-permeable forming paper, in which case ambient air can enter the fluted corrugating member 2, the pellet units 3, and the bunching member 4 through the outer tube 5.

Preferably, the outer tube 5 wrapping the gathering part 4 is provided with one or more first side air holes 51, and the number of the first side air holes 51 is one or more. Since the converging section 4 has a third air flow passage, air may enter through the upstream end face of the aerosol-generating article and then through the third air flow passage into the particles 31 of aerosol source material. And the first side air-passing holes 51 may be further supplemented with air from the side.

Preferably, the outer tube 5, which is wrapped around the fluted corrugated member 2, has one or more second side air holes 52, and the number of the second side air holes 52 is one or more. To further supply air to the fluted corrugated member 2 sections.

That is, the outer tube 5 may be made of an air-permeable material or an air-impermeable material. When it is an air-permeable material, air can be introduced into the outer tube 5 by its own air permeability. When it is an air impermeable material, air may be introduced into the outer tube 5 by perforating the outer tube 5. For example as mentioned above, the outer tube 5 has first side flow-through holes 51 around the gathering member 4 or the outer tube 5 has second side flow-through holes 52 around the fluted corrugated member 2.

Preferably, the radial dimension of the smallest of the flavouring particles 32 is smaller than the longest radial distance in the first air flow channel 23, so that the flavouring particles 32 do not fall through the first air flow channel 23 into the fluted corrugating member 2.

Preferably, the first sheet is selected from, but not limited to, paper, polylactic acid sheet or acetate; the second sheet is selected from paper, polylactic acid sheet or acetate.

The aerosol-generating article of the present invention is more preferably suitable for use in a circumferential, resistance-heated smoking article, as well as in an electromagnetic, heated smoking article. When the smoking set used in cooperation therewith is a circumferential resistance heating smoking set, it is only necessary to locate the heating cylinder (heating element) axially outside the aerosol source material particles 31. When the smoking article with which it is used is an electromagnetic heating smoking article, it is only necessary to position the magnetic field receptive susceptor axially outside the aerosol source material particles 31, or to position the aerosol source material particles 31, or more simply to position the susceptor material directly on the outer tube 5 surrounding the aerosol source material particles 31.

The technical scheme can be freely combined on the premise of no contradiction.

The utility model has the following beneficial effects:

1. eliminates a multi-through hole fixing part section and a sealing film, but can still carry out two-end constraint on the aerosol source material particles 31 through the aroma-increasing particles 32 and the gathering part 4, combines the groove corrugated part and the aerosol source material particles in bulk for the first time, in order to prevent the aerosol source material particles in bulk from falling into the fluted corrugated members, the utility model incorporates between the aerosol source material particles flavour particles of larger size, and since the particle unit 3 comprises a plurality of particles 31 of aerosol source material and a plurality of flavouring particles 32, the radial dimensions of the fragrancing particles 32 are smaller than the diameter of the hollow cavity 22, the radial dimensions of the particles 31 of aerosol source material are smaller than the longest radial distance between the fragrancing particles and the interstices between the fragrancing particles, the flavouring particles can block the downstream movement of particles of the aerosol source material and the fluted corrugated members can block the downstream movement of the flavouring particles. In order to achieve as much smoke as possible after heating of the aerosol source material particles and as short a preheating time as possible, it is necessary to ensure that the size of the aerosol source material particles is as small as possible, which in turn moves towards the downstream fluted corrugations when the aerosol-generating article is laid flat, inverted or tilted. And the other end directly selects the gathering part 4 to restrain the aerosol source material particles, the gathering part 4 can be directly arranged in the outer tube 5 in a filling or composite mode, equipment for adhering the sealing film is not needed, and the problems that the sealing film is not firmly adhered and falls off are avoided.

2. The utility model not only can play a role in blocking aerosol source material particles by introducing aroma-enhancing particles with larger sizes, but also can further enhance aroma of passing aerosol, thereby improving the quality of the aerosol.

3. In the preferred embodiment of the present invention, the outer tube 5 wrapped around the gathering member 4 has one or more first side air holes 51, and the number of the first side air holes 51 is one or more. Since the converging section 4 has a third air flow passage, air may enter through the upstream end face of the aerosol-generating article and then through the third air flow passage into the particles 31 of aerosol source material. And the first side air-passing holes 51 may be further supplemented with air from the side. The outer pipe 5 wrapping the corrugated groove part 2 is provided with one or more second side air circulation holes 52, and the number of the second side air circulation holes 52 is one or more. To further supply air to the fluted corrugated member 2 sections.

4. The aerosol-generating article of the present invention is more preferably suitable for use in a circumferential, resistance-heated smoking article, as well as in an electromagnetic, heated smoking article. When the smoking set used in cooperation therewith is a circumferential resistance heating smoking set, it is only necessary to locate the heating cylinder (heating element) axially outside the aerosol source material particles 31. When the smoking article with which it is used is an electromagnetic heating smoking article, it is only necessary to position the magnetic field receptive susceptor axially outside the aerosol source material particles 31, or to position the aerosol source material particles 31, or more simply to position the susceptor material directly on the outer tube 5 surrounding the aerosol source material particles 31. The utility model greatly improves the production efficiency. The mode of circumferential heating or electromagnetic heating is adopted, particles are prevented from scattering in the smoking set, and the problem of smoking set cleanness is avoided.

Drawings

Figure 1 is a schematic diagram of a particle-type aerosol-generating article of the prior art.

Figure 2 is a perspective view of a multi-aperture fastener segment in a particle-based aerosol-generating article of the prior art.

Figure 3 is a schematic diagram of the structure of a dual particle aerosol-generating article of the present invention.

Figure 4 is a schematic diagram of a structure of a dual particle aerosol-generating article of the utility model in another configuration.

Figure 5 is a schematic diagram of a structure of a dual particle aerosol-generating article of the utility model in yet another configuration.

Fig. 6 is a schematic view of the structure of a fluted corrugated member of the utility model.

Figure 7 is a schematic view of another configuration of the fluted corrugated member of the present invention.

List of reference numerals:

in fig. 1-2: x1-outer sleeve, X2-sealing membrane, X3-aerosol source material particles, X4-multi-ported anchor section, X5-gas flow channel section, X6-filter section, X41-axial through hole, X42-peripheral vent groove;

in fig. 3-7: 1-a filtering part, 2-a groove corrugated part, 21-a groove corrugated structure, 22-a hollow cavity, 23-a first air flow channel, 24-an inner pipe, 3-a particle unit, 31-aerosol source material particles, 32-flavoring particles, 4-a gathering part, 5-an outer pipe, 51-a first side air circulation hole and 52-a second side air circulation hole.

Detailed Description

The present invention will be further described with reference to the following embodiments.

The present invention will be described in further detail with reference to examples.

It will be appreciated by those skilled in the art that the following examples are illustrative of the utility model only and should not be taken as limiting the scope of the utility model. The examples do not specify particular techniques or conditions, and are performed according to the techniques or conditions described in the literature in the art or according to the product specifications. The materials or equipment used are not indicated by manufacturers, and all are conventional products available by purchase.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Further, "connected" as used herein may include wirelessly connected.

In the description of the present invention, "a plurality" means two or more unless otherwise specified. The terms "inner," "upper," "lower," and the like, refer to an orientation or a state relationship based on that shown in the drawings, which is for convenience in describing and simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "provided" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention are understood as specific cases by those of ordinary skill in the art.

It will be understood by those skilled in the art that, unless otherwise defined, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Examples

As shown in fig. 3 and 6, the present embodiment provides a dual particle type aerosol-generating article comprising a filter member 1, a fluted corrugated member 2, a particle unit 3, and a gathering member 4 arranged in this order from a proximal lip end to a distal lip end, each of which has an outer tube 5 outside;

the groove corrugated part 2 is a cylinder with a hollow cavity 22 surrounded by a first sheet material with a groove corrugated structure 21, a first air flow channel 23 axially penetrating through the groove corrugated structure 21 is formed between the groove corrugated structure 21 and the outer pipe 5, and a blocking piece 24 is arranged in the hollow cavity 22;

the gathering component 4 is a cylindrical rod formed by gathering the second sheet.

The particle unit 3 comprises a plurality of particles 31 of aerosol source material and a plurality of fragrancing particles 32, the fragrancing particles 32 having a radial dimension smaller than the diameter of the hollow cavity 22, the particles 31 of aerosol source material having a radial dimension smaller than the longest radial distance of the gaps between the fragrancing particles and the fragrancing particles.

Wherein the upstream and downstream are determined in the gas flow direction. More specifically, the distal labial end is upstream and the proximal labial end is downstream.

The shape of the grooves in the grooved corrugations 21 is selected from "V" and the material of the outer tube 5 is selected from paper.

The second sheet is gathered disorderly to form the gathering member 4.

The hollow cavity 22 serves as a second air flow passage. The first air flow channel 23 and the second air flow channel together serve the purpose of collecting and containing the aerosol and ensuring that the generated aerosol can be smoothly sent to the filter section.

The smallest particles of the aerosol source material particles 31 have a radial dimension which is smaller than the longest radial distance in the second gas flow channel so that the aerosol source material particles 31 do not fall through the second gas flow channel into the fluted corrugated member 2.

And third airflow channels are formed between the gathering part 4 and the outer pipe and between the gathered second sheet material and the second sheet material.

The smallest of the aerosol source material particles 31 has a radial dimension which is smaller than the longest radial distance in the third gas flow channel so that the aerosol source material particles 31 do not fall through the third gas flow channel into the bunching member 4.

The radial dimension of the smallest of the flavouring particles 32 is smaller than the longest radial distance in the first air flow channel 23 so that the flavouring particles 32 do not fall through the first air flow channel 23 into the fluted corrugating member 2.

The first sheet is selected from paper; the second sheet is selected from paper.

As shown in fig. 7, the hollow cavity 22 also has an inner tube 24 therein.

As shown in fig. 4, the outer tube 5 wrapping the gathering member 4 has 2 first side air holes 51, and the number of the first side air holes 51 is 2. Since the converging section 4 has a third air flow passage, air may enter through the upstream end face of the aerosol-generating article and then through the third air flow passage into the particles 31 of aerosol source material. And the first side air-passing holes 51 may be further supplemented with air from the side.

As shown in fig. 5, the outer tube 5, which wraps the flute corrugated members 2, has 2 second side air flow holes 52, and the number of the second side air flow holes 52 is 2. To further supply air to the fluted corrugated member 2 sections.

The aerosol-generating article of the present embodiments is more preferably suitable for use in a circumferentially-type resistance-heating smoking article, as well as an electromagnetically-type heating smoking article. When the smoking set used in cooperation therewith is a circumferential resistance heating smoking set, it is only necessary to locate the heating cylinder (heating element) axially outside the aerosol source material particles 31. When the smoking article used therewith is an electromagnetic heating smoking article, it is only necessary to position the magnetic field receptive susceptor axially outside the aerosol source material particles 31, or to position the aerosol source material particles 31, or more simply to position the susceptor material directly on the outer tube 5 surrounding the aerosol source material particles 31.

Claims (10)

1. A dual particle aerosol-generating article comprising a filter member (1), a fluted corrugated member (2), a particle unit (3) and a gathering member (4) arranged in that order from a proximal lip to a distal lip, each member having an outer tube (5) outside;

the groove corrugated part (2) is a cylinder which is surrounded by a first sheet material with a groove corrugated structure (21) and is provided with a hollow cavity (22), and a first air flow channel (23) which axially penetrates through the groove corrugated structure (21) is formed between the groove corrugated structure (21) and the outer pipe (5);

the gathering component (4) is a cylindrical rod formed by gathering the second sheet;

the particle unit (3) comprises a first particle containing cavity close to the gathering component (4) and a second particle containing cavity close to the groove corrugated component (2), wherein a plurality of aerosol source material particles (31) are contained in the first particle containing cavity, a plurality of flavoring particles (32) are contained in the second particle containing cavity, the radial size of the single flavoring particle (32) is smaller than the diameter of the hollow cavity (22), and the radial size of the single aerosol source material particle (31) is smaller than the radial size of the single flavoring particle (32).

2. A particulate aerosol-generating article according to claim 1, wherein the second sheet is gathered randomly or sequentially to form the gathered component (4); the radial dimension of the individual particles (31) of aerosol source material is smaller than the longest radial distance of the interstices between the fragranced particles (32) and the fragranced particles (32).

3. A particulate aerosol-generating article according to claim 1, characterised in that the hollow cavity (22) further has an inner tube (24) therein.

4. A particulate aerosol-generating article according to claim 1, characterized in that the particles (31) of aerosol-source material and the fragranced particles (32) are completely axially distinct.

5. A particulate aerosol-generating article according to claim 1, wherein the hollow cavity (22) acts as a second airflow channel; the first sheet is selected from paper, polylactic acid sheet or acetate fiber; the second sheet is selected from paper, polylactic acid sheet or acetate fiber.

6. A particulate aerosol-generating article according to claim 1, wherein a third airflow channel is formed between the converging member (4) and the outer tube, and between the converging second sheet material and the second sheet material; the smallest of the aerosol source material particles (31) has a radial dimension which is smaller than the longest radial distance in the third gas flow channel, so that the aerosol source material particles (31) do not fall through the third gas flow channel into the bunching member (4).

7. A particulate aerosol-generating article according to claim 1, wherein the outer tube (5) is selected from air-permeable materials, ambient air being admitted through the outer tube (5) into the fluted corrugated member (2), the particle units (3) and the bunched member (4).

8. A particulate aerosol-generating article according to claim 1, wherein the outer tube (5) around the converging means (4) has one or more first side flow apertures (51), and the number of the first side flow apertures (51) is one or more.

9. A particulate aerosol-generating article according to claim 1, wherein the outer tube (5) where the fluted member (2) is wrapped has second side flow apertures (52), the number of second side flow apertures (52) being one or more.

10. A particulate aerosol-generating article according to claim 1, wherein the radial dimension of the smallest of the fragranced particles (32) is smaller than the longest radial distance in the first air flow channel (23) so that the fragranced particles (32) do not fall through the first air flow channel (23) into a fluted corrugated member (2).

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