TW202019304A - Smoking substitute consumable - Google Patents

Abstract

The present disclosure relates to an aerosol-forming article (e.g. a heat-not-burn (HNB) consumable) comprising an aerosol-forming substrate and a plurality of hollow bore filter elements having different internal bore diameters. There may be a terminal filter element at the downstream/mouth end of the article and an upstream filter element upstream of the terminal filter element where the internal bore diameter of the terminal hollow bore filter element is less than the internal bore diameter of the upstream hollow bore filter element.

Description

Smoking substitute supplies

This disclosure relates to consumables used in smoking replacement systems, and in detail (but not exclusively) relates to heating non-burning (HNB) consumables.

It is generally believed that smoking grass exposes smokers to potentially harmful substances. It is generally believed that a large amount of potentially harmful substances are generated by the heat caused by the burning and/or ignition of tobacco and the tobacco components burned in the tobacco itself.

Conventional flammable smoking articles (such as cigarettes) generally include a cylindrical tobacco rod and usually also include a cylindrical filter, the cylindrical tobacco rod includes cut tobacco surrounded by wrapping paper, the filter and the wrapped tobacco rod are Axially aligned in abutting relationship. The filter generally includes filter material surrounded by a plug sleeve. The wrapped tobacco rod and filter are joined together by a wrapped tipping paper band that encloses the entire length of the filter and the adjacent portion of the wrapped tobacco rod. This conventional cigarette is used by igniting the end opposite the filter and burning the tobacco rod. Smokers receive mainstream smoke into their mouths by smoking at the mouth end or filter end of cigarettes.

It is known that the ignition of organic materials, such as tobacco, can produce tar and other potentially harmful by-products. Various smoking alternative systems (or "alternative smoking systems") have been proposed to avoid smoking grass.

Such smoking replacement systems can form part of nicotine replacement therapy for people who want to stop smoking and overcome their dependence on nicotine.

Smoking replacement systems include electronic systems that allow users to simulate the action of smoking by generating smoke (also known as "steam") that is drawn into the lungs by mouth (inhalation) and then exhaled. Inhaled fumes generally carry nicotine and/or flavoring agents, which have no or less odor and health risks associated with traditional smoking.

In general, smoking alternative systems are designed to provide alternatives to smoking rituals, while providing similar experiences to users and satisfying others who have experience in traditional smoking and flammable tobacco products. Some smoking alternative systems use smoking alternative products, which are designed to resemble traditional cigarettes, and are in the form of a cylinder with a mouthpiece at one end.

Over the past few years, the popularization and use of smoking alternative systems has rapidly become a reality. Although originally marketed as an aid to habitual smokers who want to quit smoking grass, consumers are increasingly looking at smoking alternative systems as a desirable lifestyle accessory.

There are many different categories of smoking replacement systems, each of which uses different methods of smoking replacement.

One method used in smoking alternative systems is the so-called "heat not burn" ("HNB") method, in which tobacco (rather than "e-liquid") is heated or warmed to release steam. Tobacco can be tobacco leaves or recombinant tobacco. The vapor may contain nicotine and/or flavoring agents. In the HNB method, the intention is to heat the tobacco without burning, ie, the tobacco does not experience ignition.

A typical HNB smoking alternative system may include equipment and consumables. Consumables may include tobacco materials. The equipment and consumables can be configured to be physically coupled together. In use, heat can be imparted to the tobacco material by the heating member of the device, wherein the air flow through the tobacco material causes the moisture in the tobacco material to be released as vapor. The vapor may also be formed by a carrier in the tobacco material and additional volatile compounds released from the tobacco (this carrier may include propylene glycol and/or vegetable glycerin, for example). The released vapor can be entrained in the air flow drawn through the tobacco.

As the vapor passes through the consumables (entrained in the air flow) from the inlet to the mouthpiece (outlet), the vapor cools and condenses to form smoke for inhalation by the user. The smoke will usually contain volatile compounds.

In HNB smoking alternative systems, heating rather than burning tobacco material is believed to cause less or lesser amounts of more harmful compounds that are usually produced during smoking. Thus, the HNB method can reduce odor and/or health risks that may be caused by tobacco burning, ignition, and pyrolysis degradation.

In some cases, the smoke delivered from the mouth of the mouthpiece (ie, inhaled by the user) may not be in a desirable state. Therefore, it may be necessary to change one or more characteristics of the smoke before it is inhaled by the user.

The design of HNB consumables needs to be improved to enhance the user experience and improve the function of the HNB smoking alternative system.

This disclosure has been designed in light of the above considerations.

In the broadest sense, the present disclosure relates to an aerosol-forming product (eg, smoking alternative product, such as HNB consumables) that has hollow-cavity filter members with different pore diameters.

According to the first aspect, there is provided an aerosol-forming product (for example, a smoking substitute product, such as HNB consumables), the aerosol-forming product comprising an aerosol-forming substrate and a plurality of hollow cavity filter members having different inner cavity diameters.

By providing multiple hollow cavity filter members with different inner cavity diameters, the steam filtration and mixing performance can be customized during manufacturing to enhance the user experience.

The optional features will now be listed. These features are applicable individually or in any combination with any aspect.

The aerosol-forming article is preferably a heating non-burning (HNB) consumable.

The aerosol-forming substrate can be heated to release at least one volatile compound that can form aerosol. The aerosol-forming substrate may be located at the upstream end of the article/consumable.

As used herein, the terms "upstream" and "downstream" are intended to refer to the direction of vapor/smoke flow, ie at the downstream end of the product/consumable is the mouth end where the smoke leaves the product/consumable for inhalation by the user or The direction of flow in the case of export. The upstream end of the article/consumable is the opposite end of the downstream end.

In order to generate smoke, the smoke-forming substrate includes at least one volatile compound that is intended to be vaporized/atomized and can provide leisure and/or medical effects to the user upon inhalation. Suitable chemically and/or physiologically active volatile compounds include the group consisting of: nicotine, cocaine, caffeine, opium and opioids, nor-pseudoephedrine and carboxone, carfa lactone , Myristyl ether, β-carboline alkaloids, salvinorin A (salvinorin A), and any combination, functional equivalent, and/or synthetic substitute of the foregoing.

The aerosol-forming substrate may include plant material. The plant material may include at least one plant material selected from the list including the following items: Amaranthus dubius , Arctostaphylos uva-ursi (bearberry), Argemone mexicana , Amica , Artemisia vulgaris , Yellow Tees, Galea zacatechichi , Canavalia maritima (harbin bean) , Cecropia mexicana (Guamura), Cestrum noctumum, Cynoglossum virginianum ( wild comfrey), Cytisus scoparius, Damiana, Entada rheedii, Eschscholzia califomica ( Hualing grass), Fittonia albivenis, Hippobroma longiflora, Humulus japonica ( Japanese hops), Humulus lupulus (hops), Lactuca virosa (poison lettuce), Laggera alata, Leonotis leonurus, Leonurus cardiaca ( motherwort), Leonurus sibiricus (honey grass (Honeyweed)), Lobelia cardinalis, Lobelia inflata ( Indian tobacco), Lobelia siphilitica, Nepeta cataria (Pseudopetalum), Nicotiana species (tobacco), Nymphaea alba (white lily), Nymphaea caerulea (blue lily), poppy, Passiflora incamata (Passiflora) Pedicularis densiflora (Indian warrior) Pedicularis groenlandica (elephant), Salvia divinorum , Salvia dorrii (tobacco sage), Salvia species (sage), Scutellaria galericulata , Scutellaria lateriflora , Scutellaria nana , Scutellaria species (parallel grass), Sida acuta (wire grass), Sida rhomb ifolia , Silene capensis , Syzygium aromaticum (lilac), Tagetes lucida (Mexican tarragon), Tarchonanthus camphoratus , Tumera diffusa (Mexican beet), Verbascum ( Verbascum ), Zamia latifolia (Maconha Brava), and the aforementioned items Any combination, functional equivalent, and/or synthetic substitute.

Preferably, the plant material is tobacco. Any type of tobacco can be used. This includes, but is not limited to, flue-cured tobacco, burley tobacco, Maryland tobacco, dark-cured tobacco, oriental tobacco, dark-cured tobacco, perique tobacco, and yellow tobacco. This also includes mixtures of the aforementioned tobaccos.

Any suitable part of the tobacco plant can be used. This includes leaves, stems, roots, bark, seeds and flowers.

Tobacco can include one or more of the following items: leaf tobacco, stem tobacco, tobacco powder, tobacco dust, tobacco derivatives, expanded tobacco, homogenized tobacco, chopped tobacco, extruded tobacco, shredded tobacco, and/or reconstituted Tobacco (eg pulp reorganization or paper reorganization).

The aerosol-forming substrate may include agglomerated sheets of homogeneous (eg paper/pulp recombination) tobacco or aggregated fragments/strips formed from such sheets.

In some embodiments, the sheet used to form the aerosol-forming substrate has a grammage greater than or equal to 100 g/m ² , such as greater than or equal to 110 g/m ² , such as greater than or equal to 120 g/m ² .

The sheet material may have a grammage of less than or equal to 300 g/m ² , for example, less than or equal to 250 g/m ² or less than or equal to 200 g/m ² .

The sheet may have a grammage between 120 and 190 g/m ² .

The aerosol-forming substrate may include at least 50 weight percent plant material, for example at least 60 weight percent plant material, for example about 65 weight percent plant material. The aerosol-forming substrate may include 80 weight percent or less plant material, for example 75 or 70 weight percent or less plant material.

The aerosol-forming substrate may include one or more additives selected from the group consisting of humectants, seasonings, fillers, aqueous/non-aqueous solvents, and adhesives.

The humectant is provided as a vapor generator-the generated vapor helps carry volatile active compounds and increases visible vapor. Suitable humectants include polyols (such as propylene glycol (PG), triethylene glycol, 1,2-butanediol, and vegetable glycerin (VG)) and their esters (such as monoacetin, diacetin, or Triacetin). They can be present in the aerosol-forming substrate in an amount between 1 and 50 weight percent.

The moisturizer content of the aerosol-forming substrate may have a lower limit of at least 1 weight percent of plant material, such as at least 2 weight percent, such as at least 5 weight percent, such as at least 10 weight percent, such as at least 20 weight percent, such as at least 30 weight percent, Or for example at least 40 weight percent.

The humectant content of the aerosol-forming substrate may have an upper limit of up to 50 weight percent of plant material, for example up to 40 weight percent, for example up to 30 weight percent, or for example up to 20 weight percent.

Preferably, the humectant content is 1 to 40 weight percent of the aerosol-forming substrate, for example 1 to 20 weight percent.

Suitable adhesives are well known in the art and can be used to bond together components that form aerosol-forming substrates. The binder may include starch and/or cellulose binders (such as methyl cellulose, ethyl cellulose, hydroxypropyl cellulose, hydroxyethyl cellulose, and methyl cellulose), gums (such as xanthan gum, Guar gum, gum arabic, and/or carob gum), organic acids, and their salts (eg, alginic acid/sodium alginate, agar, and pectin).

Preferably, the binder content is 5 to 10 weight percent of the aerosol-forming substrate, for example about 6 to 8 weight percent.

Suitable fillers are well known in the art and can be used to strengthen aerosol-forming substrates. Fillers may include fibrous (non-tobacco) fillers, such as cellulose fibers, lignocellulosic fibers (such as wood fibers), jute fibers, and combinations of the foregoing.

Preferably, the filler content is 5 to 10 weight percent of the aerosol-forming substrate, for example about 6 to 9 weight percent.

The aerosol-forming substrate may include aqueous and/or non-aqueous solvents. In some embodiments, the aerosol-forming substrate has a water content between 5 and 10 weight percent (eg, between 6-9 weight percent, such as between 7-9 weight percent).

The seasoning may be provided in solid or liquid form. It may include menthol, licorice, chocolate, fruit flavorings (including, for example, citrus, cherry, etc.), vanilla, spices (such as ginger, cinnamon), and tobacco flavorings. The seasoning may be evenly dispersed throughout the aerosol-forming substrate, or may be provided in unequal concentrations in isolated locations and/or throughout the aerosol-forming substrate.

The smoke-forming substrate can be formed in a substantially cylindrical shape so that the articles/consumables are similar to conventional cigarettes. It may have a diameter between 5 and 10 mm (for example 6 and 9 mm or 6 and 8 mm, for example about 7 mm). It may have an axial length between 10 and 15 mm (for example between 11 and 14 mm, for example about 12 or 13 mm).

The aerosol-forming substrate may be at least partially surrounded by a wrapping layer (eg, a paper wrapping layer). The wrapping layer may cover the inner foil layer, or may include a paper/foil laminate structure (where the foil is at the innermost).

The article/consumable includes at least two hollow cavity filter members having different internal axial cavity diameters. At the downstream/mouth end of the article/consumable, there may be a terminal hollow cavity filter member. There may be an upstream hollow cavity filter member located upstream of the terminal filter member but downstream of the aerosol-forming substrate.

The terminal filter member and the upstream filter member may be axially adjacent to each other or may be spaced apart. The upstream filter member may be at least partially (eg completely) surrounded by a (paper) wrapping layer.

At least one of the filter members (eg, the terminal filter member and/or the upstream filter member) may include cellulose acetate or polypropylene fiber bundles. At least one of the filter members (eg, the terminal filter member and/or the upstream filter member) may include activated carbon. At least one of the filter members (eg, the terminal filter member and/or the upstream filter member) may include paper. At least one of the filter members (eg, the terminal filter member and/or the upstream filter member) may include extruded plant material. The filter member or each filter member may be surrounded by a plug sleeve (eg, a paper plug sleeve).

Each filter member may have a substantially cylindrical shape, where the diameter substantially matches the diameter of the aerosol-forming substrate (with or without its associated wrapping layer).

In some embodiments, the axial length of the final filter member is greater than the axial length of the upstream filter member. For example, the axial length of the final filter member may be 1 mm or greater than the axial length of the upstream filter member. The axial length of the final filter member may be 2 mm or 3 mm or 4 mm or 5 mm or more larger than the axial length of the upstream filter member.

The axial length of the final filter member may be less than 20 mm, such as between 8 and 15 mm, such as between 9 and 13 mm, such as between 10 and 12 mm, such as about 12 mm.

In some embodiments, the upstream filter member may have an axial length of 10 mm or less, and the final filter member has an axial length greater than 10 mm (eg, about 12 mm).

Each hollow pore filter member may have a pore diameter of between 1 and 5 mm (eg, between 2 and 4 mm or between 2 and 3 mm). The upstream hollow cavity filter member preferably has a larger cavity diameter than the terminal hollow cavity filter member. For example, the upstream hollow pore filter member may have a pore diameter greater than the diameter of the final filter member by 1 mm or more. For example, the upstream hollow pore filter member may have a pore diameter of 3 or 3.5 mm, while the final filter member may have a pore diameter of about 2 mm.

By providing a terminal filter member with a reduced pore diameter (compared to the upstream hollow filter member), a greater mixing effect is achieved in the terminal hollow filter member because all components of the vapor/smoke are forced Co-located within a more restricted hollow cavity. The increased length of the terminal hollow pore filter in the preferred embodiment also provides good mixing of the vapor components (mixing within the pore cavity).

Compared with the upstream filter member, the terminal hollow cavity filter member may have increased density or increased hardness, that is, the upstream filter member may have increased porosity compared to the terminal filter member. This is to increase the flow and mixing of vapor/mist in the hollow cavity of the final filter member.

The final filter member (located at the downstream end of the product/consumable) can be joined to the upstream member forming the product/consumable by a wrap-around tipping layer (eg, tipping paper layer). The tipping paper may have an axial length that is longer than the axial length of the terminal filter member, such that the tipping paper completely encloses the terminal filter member plus a wrap layer surrounding any adjacent upstream members.

In some embodiments, the article/consumable may include a smoke cooling member adapted to cool the smoke generated by the smoke-forming substrate (generated by heat exchange) before being inhaled by the user.

The smoke cooling member will be located downstream of the smoke forming substrate. For example, it may be located between the aerosol-forming substrate and the upstream filter member and/or between two filter members. The smoke cooling member may be at least partially (for example completely) surrounded by a (paper) wrapping layer.

The smoke cooling member may be formed of a plastic material selected from the group consisting of polylactic acid (PLA), polyvinyl chloride (PVC), polyethylene (PE), and polyethylene terephthalate (PET) ). The smoke cooling member may be formed of a curled/aggregated sheet of material to form a structure with a high surface area and a plurality of longitudinal channels to maximize heat exchange and cooling of the smoke.

The article/consumable may include a spacing member that defines a space or cavity or chamber between the aerosol-forming substrate and the downstream end of the article/consumable. For example, it may be provided between the aerosol-forming substrate and the upstream filter member and/or between two filter members. Spacers are used to allow the cooling and mixing of smoke. The spacer member may be a tubular spacer member, which may include a cardboard tube, for example. The spacing member may be at least partially (eg completely) surrounded by a (paper) wrapping layer.

The spacing member may have an outer diameter of between 5 and 10 mm (eg, 6 and 9 mm or 6 and 8 mm, eg, about 7 mm). It may have an axial length greater than the axial length of the final filter member. It may have any axial length between 10 and 15 mm (for example 12 and 14 mm or 13 and 14 mm, for example about 14 mm).

In a second aspect, a smoking replacement system is provided that includes the aerosol-forming article as described in the first aspect, and a device including a heating member.

The device may be an HNB device, that is, a device adapted to heat but not ignite the smoke-forming substrate.

The apparatus may include a main body for accommodating the heating member. The heating member may include an elongated (eg, rod-shaped, tube-shaped, or vane-shaped) heating member. The heating member may protrude into the cavity in the body or surround the cavity for receiving the aforementioned article/consumable.

In some embodiments, the heating member is a rod heater having a diameter of about 2 mm (eg, 2.1 mm). Providing a cavity diameter of about 3 mm or 3.5 mm in the upstream hollow pore filter member in the product may be particularly suitable for use with equipment having such a rod heater, because the plant material closest to the rod heater (eg Tobacco) (which will withstand the highest temperature) will be axially aligned with the upstream axial end of the cavity in the upstream hollow cavity filter member so that the vapor released from this axially aligned portion of the plant material can be directly Flow into the cavity of the upstream hollow cavity filter member. Therefore, in a preferred embodiment of the system, the inner diameter of the cavity of the upstream hollow cavity filter member is larger than the outer diameter of the rod heater.

The device (eg, main body) may further include a power source (eg, (rechargeable) battery) to supply power to the heating member. It may further include a control unit to control the power supply to the heating member.

In the third aspect, there is provided a method of using the smoking replacement system as described in the second aspect, the method comprising the following steps: Install the product/consumable in the equipment; and Use the heating member to heat the article/consumable.

In some embodiments, the method includes the steps of inserting the article/consumable into a cavity in the body, and penetrating the article/consumable with a heating member when inserting the article/consumable. For example, the heating member can penetrate the smoke forming substrate in the article/consumable.

The skilled person will understand that the features or parameters described in relation to any of the above aspects can be applied to any other aspect, except for mutually exclusive places. Moreover, any features or parameters described herein can be applied to any aspect and/or combined with any other features or parameters described herein except where they are mutually exclusive.

As shown in FIG. 1, the HNB consumable 1 includes a smoke-forming substrate 2 at the upstream end of the consumable 1.

The smoke forming substrate includes recombinant tobacco including nicotine as a volatile compound.

The aerosol-forming substrate 2 includes 65 weight percent tobacco, which is provided in the form of aggregated debris produced from a sheet of pulp/paper reconstituted tobacco. Tobacco is added with 20 weight percent humectants (such as propylene glycol (PG) or vegetable glycerin (VG)) and has a moisture content between 7-9 weight percent. The smoke-forming substrate further includes cellulose pulp filler and guar adhesive.

The smoke forming substrate 2 is formed in a substantially cylindrical shape so that the consumables are similar to conventional cigarettes. It has a diameter of about 7 mm and an axial length of about 12 mm.

The smoke-forming base material 2 is surrounded by the paper wrapping layer 3.

The consumable 1 includes an upstream filter member 4 and a downstream (terminal) filter member 5. The two filter members 4, 5 are separated by a cardboard tube spacer 6. The two filter members 4, 5 are formed of cellulose acetate fiber bundles and are wrapped with corresponding paper plug layers (not shown).

Both filter members have a substantially cylindrical shape. The diameter of the upstream filter 4 matches the diameter of the smoke forming substrate 2. The diameter of the terminal filter member 5 is slightly larger and matches the combined diameter of the smoke-forming base material 2 and the wrapping layer 3. The axial length of the upstream filter member is shorter than that of the final filter member, and is 10 mm in axial length compared to the 12 mm of the final filter member.

The cardboard tube spacer is longer than each of the two filter members and has an axial length of about 14 mm.

Each filter member 4, 5 is a hollow cavity filter member having a corresponding hollow, longitudinally extending cavity 4a, 5a. The diameter of the pore cavity 4a in the upstream filter member 4 is larger than the diameter of the pore cavity 5a in the final filter member 5 and has a diameter of 3 mm compared to 2 mm of the final filter member 5. The upstream filter member 4 has a greater porosity than the terminal filter member 5.

The cardboard tube spacer 6 and the upstream filter member 4 are surrounded by the wrapping layer 3.

The final filter member 5 is joined to the upstream member forming the consumable by the bundled paper tipping layer 7. The tipping layer 7 surrounds the terminal filter member 5 and has an axial length of about 20 mm so that it covers a part of the cardboard tube spacer 6.

FIG. 2 shows a third embodiment of the consumable 1 ″, which is the same as the first embodiment, except for the following conditions: the wrapping layer 3 does not completely enclose the cardboard tube spacer 6, so that the tip layer 7 and the wrapping layer There is an annular gap 9 between the cardboard tube spacers 6 downstream of the end of 3.

FIG. 3 shows the first embodiment installed in the HNB device 10 that includes the rod-shaped heating member 20. The heating member 20 protrudes into the cavity 11 in the main body 12 of the apparatus.

The consumable 1 is inserted into the cavity 11 of the main body 12 of the device 10 so that the heating rod 20 penetrates the smoke forming substrate 2. The heating of the reconstituted tobacco in the aerosol-forming substrate 2 is achieved by supplying power to the heating member (for example, by a rechargeable battery (not shown)). As the tobacco heats up, the moisture and volatile compounds (for example, nicotine) in the tobacco and humectant are released as vapors and entrained in the air flow generated by the user's inhalation at the final filter member 5.

As the vapor cools in the upstream filter member 4 and the cardboard tube spacer 6, it condenses to form smoke containing volatile compounds for inhalation by the user.

By providing the terminal filter member 5 with pores 5a having a reduced pore diameter (compared to the pores 4a in the upstream hollow pore filter member 4), a larger size is achieved in the terminal hollow pore filter member 5 Mixing effect, because all components of the vapor/smoke are forced to co-locate within the more restricted hollow cavity 5a. The increased length of the terminal hollow pore filter 5 also provides good mixing of the vapor components (mixing within the pore cavity).

The increased density of the final filter member 5 also helps to increase the flow, and thus increases the mixing of smoke/vapor within the pores 5a of the final filter member 5.

The features disclosed in the foregoing description, or in the following claims, or in the drawings may be used alone or in any combination of such features to implement the invention in a variety of forms, depending on the circumstances They are expressed in their specific forms or in terms of means for performing the disclosed functions, or methods or procedures for obtaining the disclosed results.

Although the present invention has been described in conjunction with the exemplary embodiments described above, those skilled in the art will understand many equivalent variations and modifications when giving this disclosure. Therefore, the exemplary embodiments of the invention set forth above are considered to be illustrative and non-limiting. Various changes to the described embodiments can be made without departing from the scope of the present invention.

In order to avoid any doubts, any theoretical explanation provided in this article is provided for the purpose of improving the reader's understanding. The inventor does not want to be bound by any of these theoretical explanations.

Any section headings used herein are for organizational purposes only and are not to be construed as limiting the subject matter described.

Throughout this specification (including the following claims), unless the context requires otherwise, the terms "having," "including," and "including", and variations thereof, will be understood to imply the inclusion of integer or steps , Or groups of integers or steps, but does not exclude any other integers or steps, or groups of integers or steps.

It must be noted that, as used in this specification and the accompanying claims, the singular forms "a", "an", and "the" include plural referents unless the context clearly indicates otherwise. In this context, the range can be expressed from "about" one specific value and/or to "about" another specific value. When such a range is expressed, another embodiment includes from the one specific value and/or to the other specific value. Similarly, when the value is expressed as an approximate value by using the antecedent "about", it will be understood that the specific value forms another embodiment. The term "about" regarding numerical values is optional and means, for example, +/-10%.

The terms "preferred" and "preferably" are used herein to refer to embodiments of the invention that may provide certain benefits under certain circumstances. However, it is understood that other embodiments may also be preferred under the same or different circumstances. Therefore, the recitation of one or more preferred embodiments is not meant or implied that other embodiments are useless, and is not intended to exclude other embodiments from the scope of the present disclosure or the scope of the claims.

1: HNB supplies 2: Smoke forming substrate 3: wrap layer 4: upstream filtering member 5: downstream (terminal) filtering member 6: cardboard tube spacer 7: Attachment layer 9: annular gap 10: HNB equipment 11: Cavity 12: main body 20: heating rod 1'': Consumables 4a: cavity 5a: cavity

Embodiments illustrating the principles of the present invention will now be discussed in more detail with reference to the accompanying drawings, so that the present invention can be understood and other aspects and features of the present invention can be understood. In these drawings:

Figure 1 shows a first embodiment of HNB consumables;

Figure 2 shows a second embodiment of HNB consumables; and

Figure 3 shows a first embodiment within the equipment forming the HNB system.

Domestic storage information (please note in order of storage institution, date, number) no

Overseas hosting information (please note in order of hosting country, institution, date, number) no

1: HNB supplies

2: Smoke forming substrate

3: wrap layer

4: upstream filtering member

5: downstream (terminal) filter component

6: cardboard tube spacer

7: Attachment layer

10: HNB equipment

11: Cavity

12: main body

20: heating rod

4a: cavity

5a: cavity

Claims (14)

An aerosol-forming product includes an aerosol-forming substrate and a plurality of hollow-cavity filter members with different internal cavity diameters. The article of claim 1, wherein the article is a heating non-burning (HNB) consumable. The product according to claim 1 or 2, comprising a terminal hollow cavity filter member located at the downstream end/mouth end of the product and an upstream hollow cavity filter member located upstream of the terminal filter member. The article of claim 3, wherein the terminal hollow cavity filter member has an axial cavity having a diameter smaller than an axial cavity in the upstream hollow cavity filter member. The article of claim 4, wherein the diameter of the axial cavity in the upstream hollow cavity filter member is at least 1 mm larger than the diameter of the axial cavity in the terminal filter member. The article according to any one of claims 3 to 5, wherein the axial length of the terminal hollow pore filter member is greater than the axial length of the upstream hollow pore filter member. The article of claim 6, wherein the axial length of the terminal hollow cavity filter member is 2 mm or more greater than the axial length of the upstream hollow cavity filter member. The article according to any one of claims 3 to 7, wherein the upstream hollow pore filter member has a greater porosity than the terminal hollow pore filter member. The article of any one of claims 3 to 8, wherein the upstream hollow cavity filter member and the terminal hollow cavity filter member are separated by a smoke cooling member and/or a spacing member. A system includes a smoking alternative product as described in any of the preceding claims, and a device including a heating member. The system of claim 10, wherein the apparatus includes a body for receiving the heating member, and the heating member includes an elongated heating member. The system according to claim 10 or 11, comprising a rod heater having an outer diameter, wherein the inner diameter of the cavity of the upstream hollow pore filter member is larger than the outer diameter of the rod heater. A method of using the system according to any one of claims 10 to 12, the method comprising the following steps: Install the product in the equipment; and The heating member is used to heat the article. The method according to claim 13, comprising the steps of inserting the article into a cavity in a body of the device, and penetrating the article with the heating member when inserting the article.

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