RU2799626C2 - Article for use in a non-flammable aerosol delivery system - Google Patents

Abstract

FIELD: aerosol delivery systems.

SUBSTANCE: invention relates to a product for use in a non-combustible aerosol delivery system and to a non-combustible aerosol delivery system including the product. The product contains an aerosol generating material and a mouthpiece located downstream relative to the aerosol generating material, where the mouthpiece contains a material body in the form of a cylinder having a longitudinal axis and a capsule embedded in the material body so that the capsule is surrounded on all sides by the material forming the body, wherein the capsule has a shell encapsulating the liquid aerosol modifying agent, and wherein the largest cross-sectional area of ​​the capsule, measured perpendicular to the longitudinal axis, is less than 28% of the cross-sectional area of ​​the material body, measured perpendicular to the longitudinal axis.

EFFECT: providing sufficient space around the capsule for the passage of the aerosol without removing a significant amount of the aerosol mass passing through the mouthpiece from the body of the material.

29 cl, 9 dwg

Description

The field of technology to which the invention belongs

The invention relates to an article for use in a non-flammable aerosol delivery system and to a non-flammable aerosol delivery system including the article.

State of the art

Some tobacco industry products release an aerosol when used, which the user inhales. For example, tobacco heating devices heat an aerosol-generating substrate, such as tobacco, to generate an aerosol by heating, but not burning, the substrate. Such products from the tobacco industry typically include mouthpieces through which the aerosol is introduced into the user's mouth.

Disclosure of invention

According to embodiments of the invention, in a first aspect, an article is provided for use in a non-combustible aerosol delivery system, the article comprising an aerosol generating material and a mouthpiece located downstream of the aerosol generating material, the mouthpiece comprising a body of material in the form of a cylinder having a longitudinal axis , and a capsule embedded in a body of material such that the capsule is surrounded on all sides by the material constituting the body, wherein the capsule 11 has a shell encapsulating the liquid aerosol modifying agent, wherein the largest cross-sectional area of the capsule, measured perpendicular to the longitudinal axis, is less than 28% of the cross-sectional area of the material body, measured perpendicular to the longitudinal axis.

According to embodiments of the invention, in a second aspect, a system is provided comprising the article according to the first aspect and a non-combustible aerosol supply device for heating the aerosol generating material of the article.

Brief description of the drawings

Embodiments of the present invention will now be described by way of example with reference to the accompanying drawings, in which:

in fig. 1a is a sectional side view of an article for use with a non-flammable aerosol delivery device, the article including a mouthpiece containing a capsule;

in fig. 1b is a sectional view of the mouthpiece containing the capsule (FIG. 1a);

in fig. 2 is a perspective view of a non-combustible aerosol dispenser for generating aerosol from the aerosol generating material of the article shown in FIG. 1 and 1b;

in fig. 3 - device (Fig. 2) with the outer shell removed and in the absence of the product;

in fig. 4 is a side view of the device (FIG. 2), partly in section;

in fig. 5 is an exploded view of the device (FIG. 2) without the outer shell;

in fig. 6A is a sectional view of a portion of the device (FIG. 2);

in fig. 6B is an enlarged view of the area of the device (FIG. 6A); And

7 is a flowchart illustrating a method for manufacturing an article for use with a non-flammable aerosol delivery device.

Implementation of the invention

As used herein, the term "delivery system" is intended to cover systems that deliver a substance to a user and includes:

combustible aerosol delivery systems such as cigarettes, cigarillos, cigars and tobacco for pipes or rolled or stuffed cigarettes (based on tobacco, tobacco derivatives, expanded tobacco, reconstituted tobacco, tobacco substitutes or other smokeable material);

non-flammable aerosol delivery systems that release compounds from the aerosol material without burning the aerosol material, such as electronic cigarettes, tobacco heating products, and hybrid aerosol generating systems using a combination of aerosol materials;

articles containing aerosolizable material and configured for use in one of these non-combustible aerosol delivery systems; And

aerosol-free delivery systems such as lozenges, chewing gums, patches, products containing inhaled powders, and smokeless tobacco products such as snus and snuff that deliver material to the user without generating an aerosol, the material may or may not contain nicotine.

According to the present disclosure, a "combustible" aerosol delivery system is a system in which an aerosolizable material included in the aerosol delivery system (or a component thereof) is combusted or incinerated in order to facilitate delivery to the user.

According to the present disclosure, a "non-flammable" aerosol delivery system is a system in which the aerosolizable material included in the aerosol delivery system (or a component thereof) is not combusted or incinerated in order to facilitate delivery to the user.

In the embodiments described herein, the delivery system is a non-flammable aerosol delivery system, such as a self-powered, non-flammable aerosol delivery system.

In one embodiment, the non-flammable aerosol delivery system is an electronic cigarette, also known as a vaping device or electronic nicotine delivery system (END), although it should be noted that the presence of nicotine in the aerosol material is not required.

In one embodiment, the non-combustible aerosol delivery system is a tobacco heating system, also known as a non-combustion heating system.

In one embodiment, the non-flammable aerosol delivery system is a hybrid aerosol generating system using a combination of aerosolizable materials, one or more of which can be heated. Each of the aerosolized materials may be in the form of a solid, liquid or gel, for example, and may or may not contain nicotine. In one embodiment, the hybrid system includes a liquid or gel aerosol material and a solid aerosol material. The solid aerosol material may contain, for example, tobacco or a non-tobacco product.

Typically, a non-flammable aerosol delivery system may include a non-flammable aerosol delivery device and an article for use with a non-flammable aerosol delivery system. However, it is contemplated that articles which themselves contain means for supplying energy to an aerosol generating component may themselves form a non-combustible aerosol supply system.

In one embodiment, the non-flammable aerosol delivery device may include a power supply and a controller. The power source may be an electrical power source or an exothermic power source. In one embodiment, the exothermic energy source comprises a carbon substrate that can be energized to transfer energy in the form of heat to an aerosol material or heat transfer material located in close proximity to the exothermic energy source. In one embodiment, an energy source, such as an exothermic energy source, is provided in the article to form an aerosol in the absence of combustion.

In one embodiment, an article for use with a non-flammable aerosol delivery device may comprise an aerosol material, an aerosol generating component, an aerosol generating area, a mouthpiece, and/or an aerosol material receiving area.

In one embodiment, the aerosol generating component is a heater capable of interacting with the aerosol material to release one or more volatiles from the aerosol material to generate an aerosol. In one embodiment, the aerosol generating component is capable of generating an aerosol from an aerosol material without heating. For example, the aerosol generating component is capable of generating an aerosol from the material to be aerosolized without applying heat thereto, such as by one or more of vibratory, mechanical, pumping, or electrostatic means.

In one embodiment, the aerosolizable material may comprise an active material, an aerosol-forming material, and optionally one or more functional materials. The active material may contain nicotine (optionally contained in tobacco or a tobacco derivative) or one or more other odorless physiologically active substances. A non-olfactory physiologically active material is a material that is incorporated into an aerosolizable material to achieve a physiological response other than olfactory perception.

The aerosol-forming material may contain one or more of the following: glycerin, glycerol, propylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, 1,3-butylene glycol, erythritol, mesoerythritol, ethyl vanylate, ethyl laurate, diethyl suberate, triethyl citrate, triacetin, diacetin mixture, benzyl benzoate, benzyl phenyl acetate , tributyrin, lauryl acetate, lauric acid, myristic acid and propylene carbonate.

One or more functional materials may contain one or more flavoring agents, carriers, pH adjusters, stabilizers, and/or antioxidants.

In one embodiment, an article for use with a non-flammable aerosol delivery device may comprise an aerosol material or an area for receiving the aerosol material. In one embodiment, an article for use with a non-flammable aerosol delivery device may include a mouthpiece. The aerosolized material receiving area may be a storage area for storing aerosolized material. For example, the storage area may be a reservoir. In one embodiment, the aerosolized material receiving area may be separate from or combined with the aerosol generating area.

An aerosol material, which may also be referred to herein as an aerosol generating material, is a material that is capable of generating an aerosol, for example, when heated, irradiated, or excited in any other way. The aerosolized material may, for example, be in the form of a solid, liquid or gel, which may or may not contain nicotine and/or flavors. In some embodiments, the aerosolizable material may comprise an "amorphous solid", which may alternatively be referred to as a "monolithic solid" (ie, non-fibrous). In some embodiments, the amorphous solid may be a dry gel. An amorphous solid is a solid material that can hold some fluid, such as a liquid. In some embodiments, the implementation of the aerosolized material may, for example, contain from about 50 wt. %, 60 wt. % or 70 wt. % amorphous solid to about 90 wt. %, 95 wt. % or 100 wt. % amorphous solid.

The aerosolized material may be on a substrate. The substrate may, for example, be or comprise paper, card, cardboard, heavy paper, reconstituted aerosol material, plastic material, ceramic material, composite material, glass, metal or metal alloy.

An aerosol modification agent is a substance capable of modifying the aerosol used. The agent may modify the aerosol in such a way as to have a physiological or organoleptic effect on the human body. Examples of aerosol modifying agents are flavors and sensants. A sensate produces an organoleptic sensation that can be perceived by the senses, such as a sensation of coolness or a sour taste.

A current collector is a material that can be heated by the penetration of a changing magnetic field, such as an alternating magnetic field. The material to be heated may be an electrically conductive material, so the penetration of a changing magnetic field into it causes inductive heating of the heated material. The material to be heated may be a magnetic material, so the penetration of a changing magnetic field into it causes magnetohysteresis heating of the heated material. The material to be heated can be either electrically conductive or magnetic, so the material to be heated can be heated using both heating mechanisms.

Induction heating is a process in which an electrically conductive object is heated by the penetration of a changing magnetic field into the object. This process is described by Faraday's law of induction and Ohm's law. An induction heater may include an electromagnet and a device for transmitting a varying electrical current, such as alternating current, through the electromagnet. When the electromagnet and the object to be heated are suitably positioned relative to each other such that the resulting changing magnetic field generated by the electromagnet penetrates the object, one or more eddy currents are generated within the object. An object through which electric currents flow has resistance. Thus, when such eddy currents occur in an object, their flow through the electrically resistive object causes the object to heat up. This process is called joule, ohmic or resistive heating. An object that can be heated by induction heating is known as a current collector.

In one embodiment, the current collector is in the form of a closed circuit. It has been found that when the current collector is in the form of a closed circuit, the magnetic interaction between the current collector and the electromagnet in use is increased, resulting in more or improved Joule heating.

Magnetohysteresis heating is a process in which an object made of a magnetic material is heated by penetrating a changing magnetic field into the object. A magnetic material can be thought of as containing a plurality of atomic scale magnets or magnetic dipoles. When a magnetic field penetrates such a material, the magnetic dipoles orient themselves along the lines of the magnetic field. Thus, when a changing magnetic field, such as an alternating magnetic field such as that generated by an electromagnet, penetrates a magnetic material, the orientation of the magnetic dipoles changes with the applied magnetic field. This reorientation of the magnetic dipoles leads to the generation of heat in the magnetic material.

When an object is both electrically conductive and magnetic, the penetration of a changing magnetic field into the object can cause both Joule heating and magnetohysteresis heating of the object. Moreover, the use of a magnetic material can enhance the magnetic field, which allows for increased Joule heating.

In each of the processes described above, when heat is generated in the object itself rather than by an external heat source by conduction, a rapid rise in temperature in the object and a more uniform distribution of heat can be achieved, in particular by choosing the appropriate material and geometry of the object and the appropriate value and orientation of the changing magnetic field relative to the object. Moreover, when induction heating and magnetohysteresis heating do not require a connection between the changing magnetic field source and the object, design freedom can be increased, control over the heating profile improved, and costs reduced.

Products, for example, in the form of rods, are often named according to the length of the product: "normal" (regular) (usually in the range of 68-75 mm, for example from about 68 mm to about 72 mm), "short" (short) or "mini" (mini) (68 mm or less), "large" (king-size) (usually in the range of 75-91 mm, for example from about 79 mm to about 88 mm), "long" (long) or "super-large" (super-king) (usually in the range of 91-105 mm, for example from about 94 mm to about 101 mm) and "ultra-long" (ultra-long) (usually in the range from about 110 mm to approximately 121 mm).

They are also named according to the circumference of the product: "regular" (approximately 23-25 mm), "wide" (wide) (more than 25 mm), "thin" (slim) (approximately 22-23 mm), " medium-thin" (demi-slim) (approximately 19-22 mm), "super-thin" (super-slim) (approximately 16-19 mm) and "micro-thin" (micro-slim) (approximately less than 16 mm).

Accordingly, a king-size and super-slim product would have, for example, a length of approximately 83 mm and a circumference of approximately 17 mm.

Each format can be produced with mouthpieces of different lengths. The length of the mouthpiece will be between 30 and 50 mm. The rim paper connects the mouthpiece to the aerosol generating material and will generally be longer than the mouthpiece, e.g. 3-10 mm longer, so that the rim paper encloses the mouthpiece and overlaps the aerosol generating material, e.g. in the form of a rod of material substrate, for connecting the mouthpiece to the rod.

The articles, their aerosol-generating materials, and mouthpieces described herein may be made, but are not limited to, in any of the aforementioned formats.

As used herein, the terms "upstream" and "downstream" are relative terms that are defined with respect to the direction of the main flow of aerosol drawn through an article or device in use.

The tow material described herein may comprise cellulose acetate tow. The tow can also be made using other materials used for spinning fibers such as polyvinyl alcohol (PVOH), polylactic acid (PLA), polycaprolactone (PCL), poly(1-4 butanediol succinate) (PBS), poly(butylene adipate- co-terephthalate) (PBAT), starch-based materials, cotton, aliphatic polyester materials and polysaccharide polymers, or combinations thereof. The tow may be plasticized with a suitable tow plasticizer such as triacetin, where the material is cellulose acetate tow, or the tow may be unplasticized. The tow may be of any suitable specification, such as fibers having a Y-shape or other cross-section, such as an X-shape, with deniers per thread from 2.5 to 15, for example, from 8.0 to 11.0 denier. per thread and total denier values from 5000 to 50000, for example from 10000 to 40000.

As used herein, the term "tobacco material" refers to any material containing tobacco or its derivatives or substitutes. The term "tobacco material" may include one or more of the following: tobacco, tobacco derivatives, expanded tobacco, reconstituted tobacco, or tobacco substitutes. The tobacco material may contain one or more of the following: ground tobacco, tobacco fiber, shredded tobacco, extruded tobacco, tobacco stem, reconstituted tobacco, and/or tobacco extract.

As used herein, the terms "flavouring" and "flavoring" refer to materials that (subject to local laws permitting) can be used to create a desired taste or aroma in a product for adult consumers. One or more flavor additives can be used as the aerosol modifying agent described herein.

These may include extracts (eg, licorice, hydrangea arborescens, Japanese magnolia leaf with white bark, chamomile, fenugreek, clove, menthol, Japanese mint, aniseed, cinnamon, herbaceous plant, wintergreen, cherry, berry, peach, apple , Drambuie Scotch Whiskey with Heather Honey and Herbs, Bourbon, Scotch Whiskey, Whiskey, Spearmint, Peppermint, Lavender, Cardamom, Celery, Crotonwood, Nutmeg, Sandalwood, Bergamot, Geranium, Honey Essence, Rose Oil, Vanilla, oils of lemon, oils of orange, cassia, cumin, cognac, jasmine, ylang-ylang, sage, fennel, pimento, ginger, anise, coriander, coffee or mint oil from any species of the mint genus (Mentha)), aroma enhancers, blocking bitter receptor site agents, receptor site activators, or stimulants, sugar and/or sugar substitutes (eg, sucralose, acesulfame potassium, aspartame, saccharin, cyclamates, lactose, sucrose, glucose, fructose, sorbitol, or mannitol) and other additives such as charcoal, chlorophyll, minerals, herbal products or breath freshening agents. They may be imitations, synthetic or natural ingredients, or mixtures thereof. They may be in any suitable form, such as an oil, liquid or powder.

In the drawings described herein, like reference numerals are used to illustrate equivalent functions, products, or components.

In FIG. 1a shows a sectional side view of an article 1 including a mouthpiece 2 containing a capsule for use in a non-flammable aerosol delivery system. Figure 1b shows a sectional view along the line A-A' of the mouthpiece containing the capsule (Figure 1a);

Article 1 comprises a mouthpiece 2 and a cylindrical rod made of an aerosol-generating material 3, in this case tobacco material, connected to the mouthpiece 2.

In this example, the mouthpiece 2 includes a hollow tubular 4 and a body of material 6 located upstream of the hollow tubular 4, in this example adjacent to and abutting the hollow tubular 4.

The aerosol-generating material 3, when heated, forms an aerosol, for example in a non-combustible aerosol dispenser, as described herein, forming a system. In other embodiments, the article 1 may include its own heat source generated and used in the aerosol delivery system without requiring a separate aerosol delivery device.

The aerosol modifying agent is provided within the body of material 6, in this example in the form of a capsule 11, and the first oil-resistant ficelle 7 surrounds the body of material 6. In other examples, the aerosol modifying agent may be additionally provided in other forms, such as material introduced into the body of material 6 or applied to a thread, for example, a thread carrying a fragrance or other aerosol modifying agent, which can also be located inside the body of material 6. The body of material 6 is in the form of a cylinder having a longitudinal axis, and the capsule 11 is embedded in the body of material 6, thus so that the capsule 11 is surrounded on all sides by the material forming the body 6. The capsule 11 has a shell that encapsulates the liquid aerosol modifying agent. The largest cross-sectional area of the capsule, measured perpendicular to the longitudinal axis, is less than 28% of the cross-sectional area of the material body 6, measured perpendicular to the longitudinal axis. A capsule with the largest cross-sectional area of less than 28% of the cross-sectional area of the portion of the mouthpiece 2 in which the capsule 11 is located has the advantage that the pressure drop across the mouthpiece 2 is reduced compared to capsules with a larger cross-sectional area and sufficient space for the aerosol to pass without the body material 6 removing a significant amount of the aerosol mass passing through the mouthpiece 2. A capsule with the largest cross-sectional area of less than 28% of the cross-sectional area of the portion of the mouthpiece 2 in which the capsule 11 is located has the advantage that the pressure drop on the mouthpiece 2 is reduced compared to capsules with a larger cross-sectional area, and there is sufficient space around the capsule for the passage of the aerosol without the body of the material 6 removing a significant amount of the aerosol mass passing through the mouthpiece 2.

The cross-sectional area of the capsule 11 at its largest cross-sectional area is less than 28% of the cross-sectional area of the portion of the mouthpiece 2 in which the capsule 11 is located, more preferably less than 27% and even more preferably less than 25%. For example, for a spherical capsule with a diameter of 3.0 mm, the largest cross-sectional area of the capsule is 7.07 mm ² . For a mouthpiece 2 having a circumference of 21 mm as described herein, the material body 6 has an outer circumference of 20.8 mm and the radius of this component would be 3.31 mm, corresponding to a cross-sectional area of 34.43 mm ² . The cross-sectional area of the capsule is in this example 20.5% of the cross-sectional area of the mouthpiece 2. As another example, if the capsule had a diameter of 3.2 mm, its largest cross-sectional area would be 8.04 mm ² . In this case, the cross-sectional area of the capsule will be 23.4% of the cross-sectional area of the material body 6.

Capsule 11 may contain a breakable capsule, such as a capsule that has a hard, brittle shell surrounding a liquid payload. In this example, a single capsule 11 is used. The capsule 11 is completely embedded in the body of the material 6. In other words, the capsule 11 is completely surrounded by the material that forms the body 6. In other examples, a plurality of breakable capsules can be located inside the body of the material 6, for example, 2, 3 or more fragile capsules. The length of the body of the material 6 can be increased to accommodate the required number of capsules. In examples where multiple capsules are used, individual capsules may be the same or may differ from one another in terms of capsule size and/or payload. In other examples, multiple bodies of material 6 may be provided, each containing one or more capsules.

Capsule 11 has a core-shell structure. In other words, capsule 11 contains a shell containing a liquid agent, such as a flavor or other agent, which can be any of the flavors or aerosol modifiers described herein. The capsule shell may be torn open by the user to release a flavor or other agent into the body of the material 6. The first ficell 7' may include a protective coating to render the ficell material substantially impermeable to the liquid payload of the capsule 11. Alternatively or in addition, the second ficell 9 and /or the mouthpiece 5 may contain a protective coating to make the material of this fitelle and/or the mouthpiece substantially impervious to the liquid payload of the capsule 11.

In this example, capsule 11 is spherical and approximately 3 mm in diameter. In other examples, capsules of other shapes and sizes may be used. The total weight of capsule 11 may be from about 10 mg to about 50 mg.

In this example, the capsule 11 is located in a longitudinal central position within the material body 6. That is, the capsule 11 is positioned so that its center is 4 mm from each end of the material body 6. In other examples, the capsule 11 may be located in a position other than the longitudinal center position in the material body 6, i.e. closer to the downstream end of the material body 6 than to the upstream end, or closer to the upstream end of the material body 6 than to the downstream end . Preferably, the mouthpiece 2 is designed such that the capsule 11 and the vents 12 are longitudinally offset relative to each other in the mouthpiece 2.

The section of the mouthpiece 2 taken along the line A-A' (FIG. 1a) is shown in FIG. 2b. In FIG. 1b shows the capsule 11, the material body 6, the first and second ficells 7, 9 and the mouthpiece 5. In this example, the capsule 11 is located centrally on the longitudinal axis (not shown) of the mouthpiece 2. The first and second ficells 7, 9 and the tip paper 5 are located concentrically around the body 6 material.

Destructible capsule 11 has a core-shell structure. That is, the encapsulating material or protective material forms a sheath around the core that contains the aerosol modifying agent. The shell structure prevents the aerosol modifying agent from migrating during storage of the article 1, but allows controlled release of the aerosol modifying agent, also referred to as an aerosol modifier, during use.

In some cases, the protective material (also referred to herein as the encapsulating material) is brittle. The capsule is crushed or otherwise cracked or broken by the user to release the aerosol modifier. Typically, the capsule breaks just prior to heating, but the user can choose when to release the aerosol modifier. The term "breakable capsule" refers to a capsule in which the shell can be broken by applying pressure to release the core; more specifically, the shell can be torn open by pressure generated by the user's fingers when the user wishes to release the capsule core.

In some cases, the protective material is heat resistant. That is, in some cases, the barrier will not rupture, melt, or otherwise break down at the temperature reached at the capsule site during use of the aerosol delivery device. By way of illustration, the capsule located in the mouthpiece may be exposed to temperatures, for example, in the range of 30°C to 100°C, and the protective material may continue to contain the liquid core up to a temperature of at least about 50-120°C.

In other cases, the capsule releases the core composition when heated, for example, when the barrier material melts or the capsule swells, causing the barrier material to rupture.

The total weight of the capsule may range from about 1 mg to about 100 mg, preferably from about 5 mg to about 60 mg, from about 8 mg to about 50 mg, from about 10 mg to about 20 mg, or from about 12 mg to about 18 mg.

The total weight of the base composition may range from about 2 mg to about 90 mg, preferably from about 3 mg to about 70 mg, from about 5 mg to about 25 mg, from about 8 mg to about 20 mg, or from about 10 mg to approximately 15 mg.

According to the invention, the capsule contains a core as described above and a shell. The capsules may have a crush strength of from about 4.5 N to about 40 N, more preferably from about 5 to about 30 N or up to about 28 N (eg, from about 9.8 to about 24.5 N). The crush strength of the capsule can be measured when the capsule is removed from the material body 6 and using a dynamometer to measure the force with which the capsule breaks when pressed between two flat metal plates. A suitable measuring device is a Sauter FK 50 dynamometer with a flat head nozzle that can be used to crush the capsule on a flat hard surface having a surface similar to a nozzle.

The capsules may be substantially spherical and have a diameter of at least about 0.4 mm, 0.6 mm, 0.8 mm, 1.0 mm, 2.0 mm, 2.5 mm, 2.8 mm, or 3. 0 mm. Capsule diameter may be less than about 10.0 mm, 8.0 mm, 7.0 mm, 6.0 mm, 5.5 mm, 5.0 mm, 4.5 mm, 4.0 mm, 3.5 mm or 3.2 mm. For example, the capsule diameter may range from about 0.4 mm to about 10.0 mm, from about 0.8 mm to about 6.0 mm, from about 2.5 mm to about 5.5 mm, or from about 2 .8 mm to approximately 3.2 mm. In some cases, the capsule may have a diameter of approximately 3.0 mm. These dimensions are particularly suitable for the inclusion of a capsule in the article described herein.

Preferably, the pressure drop or pressure difference (also referred to as draw resistance) across the ends of the product, measured as open state pressure drop (i.e. with the vents open), is reduced by less than 8 mmH2O. Art. when the capsule breaks. More preferably, the pressure drop across the open port is reduced by less than 6 mmH2O. Art. and more preferably less than 5 mm of water. Art. These values are measured as an average of at least 80 products with the same design. Such small pressure drop changes mean that other aspects of product design, such as setting the correct ventilation level for a given product pressure drop, can be achieved whether or not the user decides to break the capsule.

The protective material may contain one or more of a gelling agent, a filler, a buffer, a coloring agent, and a plasticizer.

Preferably, the gelling agent may be, for example, a polysaccharide or cellulose gelling agent, gelatin, gum, gel, wax, or a mixture thereof. Suitable polysaccharides include alginates, dextrans, maltodextrins, cyclodextrins and pectins. Suitable alginates include, for example, an alginic acid salt, an esterified alginate, or a glyceryl alginate. Alginic acid salts include ammonium alginate, triethanolamine alginate, and group I or II metal ion alginates such as sodium, potassium, calcium and magnesium alginate. Esterified alginates include propylene glycol alginate and glycerol alginate. In one embodiment, the barrier material is sodium alginate and/or calcium alginate. Suitable cellulosic materials include methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, carboxymethylcellulose, cellulose acetate and cellulose ethers. The gelling agent may contain one or more modified starches. The gelling agent may contain carrageenans. Suitable gums include agar, gellan gum, gum arabic, pullulan gum, mannan gum, ghatti gum, gum tragacanth, karaya, locust bean, acacia gum, guar, quince seed, and xanthan gum. Suitable gels include agar, agarose, carrageenans, furoidan and furcellaran. Suitable waxes include carnauba wax. In some cases, the gelling agent may contain carrageenans and/or gellan gum; these gelling agents are particularly suitable for inclusion as a gelling agent, since the pressure required to break the resulting capsules is particularly suitable.

The barrier material may contain one or more fillers such as starches, modified starches (such as oxidized starches) and sugar alcohols such as maltitol.

The protective material may contain a coloring agent that facilitates the positioning of the capsule within the aerosol generating device during the manufacture of the aerosol generating device. The coloring agent is preferably selected from dyes and pigments.

The protective material may further comprise at least one buffer, such as a citrate or phosphate compound.

The protective material may additionally contain at least one plasticizer, which may be glycerol, sorbitol, maltitol, triacetin, polyethylene glycol, propylene glycol or other polyhydric alcohol with plasticizing properties, and optionally one acid of monobasic, dibasic or tribasic type, especially citric acid, fumaric acid. acid, malic acid and the like. The amount of plasticizer is 1% to 30% by weight, preferably 2% to 15% by weight, and even more preferably 3 to 10% by weight, based on the total weight of the dry casing.

The protective material may also contain one or more filler materials. Suitable filler materials include those containing starch derivatives such as dextrin, maltodextrin, cyclodextrin (alpha, beta or gamma), or cellulose derivatives such as hydroxypropyl methyl cellulose (HPMC), hydroxypropyl cellulose (HPC), methyl cellulose (MC), carboxymethyl cellulose (CMC) , polyvinyl alcohol, polyols or mixtures thereof. Dextrin is the preferred excipient. The amount of filler in the casing is at most 98.5%, preferably 25 to 95%, more preferably 40 to 80% and even more preferably 50 to 60% by weight of the total weight of the dry casing.

The capsule shell may further comprise a hydrophobic outer layer that reduces the susceptibility of the capsule to moisture degradation. The hydrophobic outer layer is preferably selected from the group consisting of waxes, especially carnauba wax, candelilla wax or beeswax, carbovax, shellac (in alcohol or aqueous solution), ethyl cellulose, hydroxypropyl methyl cellulose, hydroxyl propyl cellulose, latex composition, polyvinyl alcohol, or combinations thereof. More preferably, at least one moisture barrier is ethyl cellulose or a mixture of ethyl cellulose and shellac.

The capsule core contains an aerosol modifier. This aerosol modifier can be any volatile substance that modifies at least one property of the aerosol. For example, an aerosol substance can modify pH, organoleptic properties, water content, delivery characteristics, or aroma. In some cases, the aerosol modifier may be selected from an acid, a base, water, or a fragrance. In some embodiments, the aerosol modifier contains one or more flavors.

The flavoring may preferably be licorice oil, rose oil, vanilla, lemon oil, orange oil, mint flavor, preferably menthol and/or mint oil of any species of the genus Mentha, such as peppermint oil and/or spearmint oil, or lavender oil, fennel or anise.

In some cases, the flavoring contains menthol.

In some cases, the capsule may contain at least about 25% by weight flavor (based on the total weight of the capsule), preferably at least about 30% by weight flavor, 35% by weight flavor, 40% by weight flavor , 45% w/w flavor or 50% w/w flavor.

In some instances, the core may contain at least about 25% flavor by weight (based on the total weight of the core), preferably at least about 30% flavor by weight, 35% flavor by weight, 40% flavor by weight. , 45% w/w flavor or 50% w/w flavor. In some cases, the core may contain about 75% by weight of flavor or less (based on the total weight of the core), preferably about 65% by weight of flavor or less, 55% by weight of flavor, or 50% by weight of flavor. For example, the capsule may include an amount of flavor in the range of 25-75% by weight (based on the total weight of the core), about 35-60% by weight, or about 40-55% by weight.

Capsules may include at least about 2 mg, 3 mg, or 4 mg of an aerosol modifier, preferably at least about 4.5 mg of an aerosol modifier, 5 mg of an aerosol modifier, 5.5 mg of an aerosol modifier, or 6 mg of an aerosol modifier.

In some cases, the consumable contains at least about 7 mg of an aerosol modifier, preferably at least about 8 mg of an aerosol modifier, 10 mg of an aerosol modifier, 12 mg of an aerosol modifier, or 15 mg of an aerosol modifier. The core may also contain a solvent that dissolves the aerosol modifier.

Any suitable solvent may be used.

In the case where the aerosol modifier contains flavor, the solvent may preferably contain short and medium chain fats and oils. For example, the solvent may contain triesters of glycerol such as C2-C12 triglycerides, preferably C6-C10 triglycerides or Cs-C12 triglycerides. For example, the solvent may contain medium chain triglycerides (MCT-C8-C12) which may be derived from palm oil and/or coconut oil.

Esters can be formed with caprylic acid and/or capric acid. For example, the solvent may contain medium chain triglycerides, which are caprylic triglycerides and/or capric triglycerides. For example, the solvent may contain compounds identified in the CAS registry under the numbers 73398-61-5, 65381-09-1, 85409-09-2. Such medium chain triglycerides are odorless and tasteless.

The hydrophilic-lipophilic balance (HLB) of the solvent may range from 9 to 13, preferably from 10 to 12. Methods for making capsules include co-extrusion followed, if necessary, by centrifugation and curing and/or drying. The content of WO 2007/010407 A2 is incorporated herein in its entirety by reference.

In some embodiments, when the aerosol generating material 3 is heated to form an aerosol, such as in a non-flammable aerosol dispenser as described herein, the portion of the mouthpiece 2 in which the capsule is located reaches a temperature of 58 to 70 degrees Celsius during use of the aerosol generating system. As a result of exposure to this temperature, the contents of the capsule are heated sufficiently to facilitate the evaporation of the contents of the capsule, for example, the aerosol modifying agent, into the aerosol formed by the system when the aerosol passes through the mouthpiece 2. The heating of the contents of the capsule 11 may take place, for example, before capsule 11 will be destroyed, so after the capsule 11 is broken, its contents are more easily released into the aerosol passing through the mouthpiece 2. Alternatively, the contents of the capsule 11 can be heated to this temperature after the capsule 11 has been broken, which again leads to increased release the contents into an aerosol. It has been found that preferably the temperature of the mouthpiece in the range of 58 to 70 degrees Celsius is high enough to more easily release the contents of the capsule, but low enough so that the outer surface of the part of the mouthpiece 2 in which the capsule is located does not reach a temperature leading to unpleasant sensations when touching the consumer in such a way that the capsule 11 burst when pressing on the mouthpiece 2.

The temperature of the portion of the mouthpiece 2 in which the capsule 11 is located can be measured using a digital thermometer with a penetration probe positioned so that the probe enters the mouthpiece 2 through the wall of the mouthpiece 2 (forming a seal to limit the amount of outside air that can seep into the mouthpiece around probe) and located near the location of the capsule 11. Similarly, a temperature sensor can be placed on the outer surface of the mouthpiece 2 to measure the temperature of the outer surface.

Table 1.0 below shows the temperature at the location of the capsule in the mouthpiece 2 of the product used in the aerosol delivery system during the first 5 puffs. Data are presented for an article when heated using a spiral heating device as described herein with reference to Figures 2-6 using the "standard" heating profile and for the same article when heated by the same device using the " accelerated heating. The "faster" heating profile is user-selectable and allows a higher heating temperature to be reached.

As shown in Table 1.0, the temperature of the mouthpiece 2 at the location of the capsule 11 reaches a maximum temperature of 61.5°C with the "standard" heating profile and a maximum temperature of 63.8°C with the "accelerated" heating profile. It was found that the maximum temperature in the range of 58°C to 70°C, preferably in the range of 59°C to 65°C, and more preferably in the range of 60°C to 65°C is particularly preferred in order to promote the evaporation of the contents of the capsule 11 when maintaining a suitable temperature of the outer surface of the mouthpiece 2.

Table 1.0 Puff number T°C at the location of the capsule in the spiral heating device with a "standard" heating profile T°C at the location of the capsule in the spiral heating device with the "accelerated" heating profile 1 58.5 54.7 2 56.5 60.5 3 61.5 63.8 4 57.2 53.0 5 52.9 46.7

The capsule 11 can be destroyed by an external force applied to the mouthpiece 2, for example, by the user using their fingers or other mechanism to compress the mouthpiece 2. As described above, the part of the mouthpiece in which the capsule is located is placed in such a way as to achieve a temperature 58°C when using an aerosol delivery system to generate an aerosol. Preferably, the crush strength of the capsule 11 when it is inside the mouthpiece 2 and before the aerosol generating material 3 is heated is between 1500 and 4000 gram-force. Preferably, the crush strength of the capsule 11 when it is inside the mouthpiece 2 and within 30 seconds of using the aerosol supply system to generate the aerosol is between 1000 and 4000 gram-force. Accordingly, despite the fact that the capsule 11 is exposed to temperatures above 58°C, for example between 58°C and 70°C, it is able to maintain crush strength within a range that has been found to allow the capsule 11 to be easily crushed by the consumer, while providing the consumer with sufficient tactile feedback so that the capsule 11 is destroyed. Maintaining such crush strength is achieved by selecting a suitable gelling agent for the capsule as described herein, such as a polysaccharide, including, for example, gum arabic, gellan gum, acacia gum, xanthan gums or carrageenans, alone or in combination with gelatin. In addition, a suitable wall thickness of the capsule shell should be selected.

Preferably, the tensile strength of the capsule when it is inside the mouthpiece and before the aerosol generating material is heated is 2000 to 3500 gram-force or 2500 to 3500 gram-force. Preferably, the tensile strength of the capsule when it is inside the mouthpiece and during 30 seconds of use of the aerosol generating system is 1500 to 4000 gram-force or 1750 to 3000 gram-force. In one example, the average tensile strength of the capsule when it is inside the mouthpiece and before the aerosol generating material is heated is approximately 3175 gram-force, and the average tensile strength of the capsule when it is inside the mouthpiece and during 30 seconds of use of the aerosol generating system , is approximately 2345 gram-force.

The crush strength test of the capsule can be carried out using a force measuring instrument such as a Texture Analyzer. For these crush strength values, a texture analyzer of the TA.XTPlus type was used with a round shaped metal probe having a diameter of 6 mm and centrally located at the location of the capsule (i.e., 12 mm from the mouth end of the mouthpiece 2). The test probe speed was 0.3 mm/sec, while the pre-test speed was 5.00 mm/sec, and the re-test speed was 10 mm/sec. The applied force was 5000 g. The test articles were smoked using a Borgwaldt A14 syringe drive device according to Health Canada's known heavy smoking regimen (puff volume 55 ml, puff duration 2 sec, pause between puffs 30 sec) using standard test equipment . Three puffs were made using this puff mode and the capsule crush strength was measured within 30 seconds of the third puff. The test article was equivalent to article 1 shown in figures 1a and 1b and described in more detail below, except that a hollow tubular element 4 with a diameter of 8 mm was at the mouth end, formed from two layers of paper glued together, each of which was wrapped in parallel with interlocking seams, and having a total thickness of 300 µm. The capsule was a 3 mm diameter capsule located within the body of an 8 mm long cellulose acetate tow having a tow specification of 9.5X12,000 and a targeted 9% triacetin plasticizer.

Aerosol-generating material 3, also referred to herein as aerosol-generating substrate 3, comprises: at least one aerosol-forming material. In this example, the aerosol-forming material is glycerin. In alternative examples, the aerosol-forming material may be other materials as described herein, or combinations thereof. It has been found that the aerosol generating material improves the organoleptic characteristics of the article by assisting in the transfer of compounds, such as aromatics, from the aerosol generating material to the consumer. However, a problem with adding such aerosol-forming materials to an aerosol-generating material in an article for use in a non-flammable aerosol delivery system may be that when the aerosol-forming material is aerosolized when heated, it can increase the mass of aerosol that is delivered by the article, and this increased the mass can maintain a higher temperature as it passes through the mouthpiece. Passing through the mouthpiece, the aerosol transfers heat to the mouthpiece, while heating the outer surface of the mouthpiece, including the area that comes into contact with the user's lips during use. The temperature of the mouthpiece may be significantly higher than the temperature to which consumers are accustomed when smoking, for example, conventional cigarettes, and this may be an undesirable effect caused by the use of such aerosol forming materials.

The part of the mouthpiece that comes into contact with the consumer's lips is typically a paper tube that is either hollow or encircles the cylindrical body of the filter material.

As shown in FIG. 1a, the mouthpiece 2 of article 1 comprises an upstream end 2a adjacent to the aerosol-generating substrate 3 and a downstream end 2b remote from the aerosol-generating substrate 3. At the downstream end 2b, the mouthpiece 2 has a hollow tubular member. 4 formed from a fibrous tow. This has been found to significantly reduce the temperature of the outer surface of the mouthpiece 2 at the downstream end 2b of the mouthpiece which comes into contact with the user's mouth when the article 1 is in use. In addition, it has been found that the use of the tubular member 4 significantly reduces the temperature of the outer surface of the mouthpiece 2 even in front of the tubular member 4. Without being limited by theory, it is assumed that this is due to the tubular member 4, directing the aerosol closer to the center of the mouthpiece 2 and, hence reducing the heat transfer from the aerosol to the outer surface of the mouthpiece 2.

The body of material 6 and the hollow tubular element 4 individually form a substantially cylindrical common outer shape and have a common longitudinal axis. The body of material 6 is wrapped with a first ficell 7. Preferably, the first ficell 7 has a basis weight of less than 50 g/m ² , more preferably between about 20 g/m ² and 40 g/m ² . Preferably the first ficell 7 has a thickness of 30 to 60 µm, more preferably 35 to 45 µm. Preferably the first ficell 7 is a non-porous ficell, eg having a permeability of less than 100 Coresta units, eg less than 50 Coresta units. However, in other embodiments, the first ficell 7 may be a porous ficell, eg having a permeability greater than 200 Coresta units.

In this example, article 1 has an outer circumference of approximately 21 mm (i.e., the article has a medium thin format). In other examples, the article may be provided in any of the formats described herein, such as with an outer circumference of 15 mm to 25 mm. Since the article must be heated to release the aerosol, improved heating efficiency can be achieved using articles having a smaller outer circumference in this range, such as a circumference of less than 23 mm. In order to achieve improved aerosol through heating while maintaining a suitable product length, product circumferences greater than 19 mm have also been found to be particularly effective. Articles having a circumference of 19 mm to 23 mm, and more preferably 20 mm to 22 mm, have been found to strike a good balance between providing efficient aerosol delivery and efficient heating capability.

The outer circumference of the mouthpiece 2 is substantially the same as the outer circumference of the rod of the aerosol generating material 3 so that there is a smooth transition between these components. In this example, the outer circumference of the mouthpiece 2 is approximately 20.8 mm. The rim paper 5 is wrapped over the entire length of the mouthpiece 2 and over a part of the stem of the aerosol generating material 3, and has an adhesive on its inner surface for connecting the mouthpiece 2 and the stem 3. In this example, the rim paper 5 protrudes 5 mm above the stem of the aerosol generating material 3, but alternatively it may protrude 3-10 mm above stem 3, or more preferably 4-6 mm, to ensure a secure connection between the mouthpiece 2 and stem 3. The rim paper 5 may have a base weight that is higher than the base weight of the ficell used in article 1, for example, the basis weight is between 40 g and 80 g, more preferably between 50 g and 70 g, and in this example 58 g/m2. It has been found that these basis weight ranges result in tipping paper having acceptable tear strength while being flexible enough to wrap around article 1 and adhere along the longitudinal seam overlap on the paper. The outer circumference of the tipping paper 5 wrapped in a single layer around the mouthpiece 2 is approximately 21 mm.

The "wall thickness" of the hollow tubular element 4 corresponds to the wall thickness of the tube 4 in the radial direction. It can be measured, for example, with a caliper. The wall thickness is preferably greater than 0.9 mm, and more preferably 1.0 mm or greater. Preferably, the wall thickness is substantially constant around the entire wall of the hollow tubular 4. However, in the case where the wall thickness is not substantially constant, the wall thickness is preferably greater than 0.9 mm at any point around the hollow tubular 4, more preferably 1 .0 mm or more.

Preferably, the length of the hollow tubular element 4 is less than about 20 mm. More preferably, the length of the hollow tubular 4 is less than about 15 mm. Even more preferably, the length of the hollow tubular element 4 is less than about 10 mm. In addition or alternatively, the length of the hollow tubular element 4 is at least about 5 mm. Preferably, the length of the hollow tubular element 4 is at least about 6 mm. In some preferred embodiments, the length of the hollow tubular 4 is from about 5 mm to about 20 mm, more preferably from about 6 mm to about 10 mm, even more preferably from about 6 mm to about 8 mm, most preferably about 6 mm. mm, 7 mm or approximately 8 mm. In this example, the length of the hollow tubular element 4 is 6 mm.

Preferably, the density of the hollow tubular 4 is at least about 0.25 grams per cubic centimeter (g/cm ³ ), more preferably at least about 0.3 g/cm ³ . Preferably, the density of the hollow tubular 4 is less than about 0.75 grams per cubic centimeter (g/cm ³ ), more preferably less than 0.6 g/cm ³ . In some embodiments, the implementation of the density of the hollow tubular element 4 is from 0.25 to 0.75 g/cm ³ more preferably from 0.3 to 0.6 g/cm ³ and more preferably from 0.4 g/cm ³ to 0.6 g/cm ³ or approximately 0.5 g/cm ³ . These densities have been found to provide a good balance between the increased hardness provided by the denser material and the lower heat transfer properties of the lower density material. For the purposes of the present invention, the "density" of the hollow tubular element 4 refers to the density of the fibrous tow forming the element with any plasticizer incorporated therein. Density can be determined by dividing the total weight of the hollow tubular 4 by the total volume of the hollow tubular 4, whereby the total volume can be calculated using appropriate measurements of the hollow tubular 4, such as with a caliper. If necessary, the corresponding dimensions can be measured using a microscope.

The fibrous tow forming the hollow tubular element 4 preferably has a total denier of less than 45,000, more preferably less than 42,000. It has been found that this total denier makes it possible to form a tubular element 4 that is not too dense. Preferably the total denier is at least 20,000, more preferably at least 25,000. In preferred embodiments, the fiber tow forming the hollow tubular element 4 has a total denier of 25,000 to 45,000, more preferably 35,000 to 45,000. Preferably, the cross-sectional shape of the fibers of the tow is Y-shaped, although other fiber shapes such as X-shaped may be used in other embodiments.

The fibrous tow forming the hollow tubular element 4 preferably has more than 3 denier per thread. It has been found that this denier per thread allows the formation of a tubular element 4 which is not too tight. Preferably the denier per thread is at least 4, more preferably at least 5. In preferred embodiments, the fibrous tow forming the hollow tubular element 4 has a denier per thread of 4 to 10, more preferably 4 to 9. In one example, the fibrous tow forming the hollow tubular member 4 has an 8X40,000 tow formed from cellulose acetate and containing 18% of a plasticizer such as triacetin.

The hollow tubular element 4 preferably has an inner diameter greater than 3.0 mm. Smaller diameters can cause the aerosol to pass through the mouthpiece 2 and into the consumer's mouth faster than desired, such that the aerosol becomes too warm, eg, reaches a temperature above 40°C or above 45°C. More preferably, the hollow tubular element 4 has an internal diameter greater than 3.1 mm, and even more preferably greater than 3.5 mm or 3.6 mm. In one embodiment, the inside diameter of the hollow tubular 4 is approximately 3.9 mm.

The hollow tubular element 4 preferably contains from 15% to 22% by weight of a plasticizer. For cellulose acetate tow, the plasticizer is preferably triacetin, although other plasticizers such as polyethylene glycol (PEG) may be used. More preferably, the tubular element 4 contains from 16% to 20% by weight of the plasticizer, for example, about 17%, about 18% or about 19% of the plasticizer.

The pressure drop or pressure difference (also referred to as draw resistance) across the mouthpiece, for example, at the ends of the downstream portion of the article 1 of the aerosol generating material 3, is preferably less than about 40 mmH2O. Art. It has been found that such pressure drops allow a sufficient amount of aerosol, including desirable compounds such as aromatic compounds, to pass through the mouthpiece 2 to the consumer. More preferably, the pressure drop across the mouthpiece 2 is less than about 32 mmH2O. Art. In some embodiments, a particularly improved aerosol has been produced using a mouthpiece 2 having a pressure drop of less than 31 mmH2O. Art., for example, approximately 29 mm of water. Art., approximately 28 mm of water. Art. or approximately 27.5 mm of water. Art. Alternatively or additionally, the pressure drop across the mouthpiece may be at least 10 mmH2O. Art., preferably at least 15 mm of water. Art. and more preferably at least 20 mm of water. Art. In some embodiments, the pressure drop across the mouthpiece may be between about 15 and 40 mmH2O. Art. These values allow the mouthpiece 2 to slow down the passage of the aerosol through the mouthpiece 2 so that the temperature of the aerosol has time to decrease before reaching the downstream end 2b of the mouthpiece 2.

Preferably, the length of the material body 6 is less than about 15 mm. More preferably, the length of the material body 6 is less than about 10 mm. In addition or alternatively, the length of the material body 6 is at least about 5 mm. Preferably, the length of the material body 6 is at least about 6 mm. In some preferred embodiments, the body length of the material 6 is from about 5 mm to about 15 mm, more preferably from about 6 mm to about 12 mm, even more preferably from about 6 mm to about 12 mm, most preferably about 6 mm, 7 mm , 8 mm, 9 mm or 10 mm. In this example, the length of the material body 6 is 10 mm.

In this example, the base material 6 is formed from a fiber tow. In this example, the tow used in the body of material 6 has a denier per thread (d.p.f.) of 8.4 and a total denier of 21,000. Alternatively, the tow may, for example, have a denier per thread (d.p.f.) of 9.5 and a total denier of 12,000, or denier per thread 8.0 and total denier 15000.

It is known that for a given bundle specification (for example, 8.4Y21000), a bundle performance curve is generated that represents the pressure drop along the length of the rod formed using the bundle for each bundle weight range. Parameters such as circumferential length and diameter, wrap thickness, and tow plasticizer level are precisely determined and combined with the tow specification to generate a tow performance curve that gives an idea of the pressure drop that can be generated by different tow weights between minimum and maximum. weight values achievable for a given rod length using standard filter rod forming equipment. Such harness performance curves can be calculated, for example, using software available from harness suppliers. It has been found that it may be advantageous to use a body of material 6 that includes a fibrous tow having a weight per mm length of the body of material 6 that is between about 10% and about 30% of the range between the minimum and maximum weight values of the tow performance curve constructed for fiber tow. This allows for an acceptable balance between providing sufficient weight to the bundle to avoid shrinkage after the body 6 is formed, while maintaining an acceptable pressure drop, and also facilitating the placement of a capsule within the bundle, such as a capsule having the dimensions described herein.

In this example, the tow contains plasticized cellulose acetate tow. The plasticizer used in the tow contains approximately 7% by weight of the tow. In this example, the plasticizer is triacetin. In alternative examples, it has been found that lower levels of plasticizer are beneficial in providing a softer body of material 6, which makes it easier to crush the capsule. For example, the level of plasticizer may be less than 7%, less than 6%, less than 5%, or less than 4%. In some examples, the level of plasticizer is between 0.2% and 4%, such as between 0.5% and 3%. When combined with fiber tow with a total denier of less than 18,000 grams/9000 m, such as 10,000 to 18,000 g/9000 m, this results in a particularly soft material body 6. The use of lower levels of plasticizer also helps to minimize fiber tow shrinkage that can occur. after the formation of the filter rods.

In other examples, various materials may be used to form the material body 6. For example, the material body 6 may be formed from paper, for example in a manner similar to paper filters known for use in cigarettes. Alternatively, the body of material 6 may be formed from tows other than cellulose acetate, such as polylactic acid (PLA), other materials described herein for fiber tow, or similar materials. The tow is preferably formed from cellulose acetate. Tow formed from cellulose acetate or other materials preferably has a denier per thread of at least 5, more preferably at least 6, and even more preferably at least 7. These deniers per thread provide a tow that has relatively coarse and thick fibers. with less surface area, resulting in a lower pressure drop across the mouthpiece 2 than tows having lower denier per thread. Preferably, in order to obtain a sufficiently uniform body of material 6, the tow has a denier per thread of no more than 12 denier per thread, preferably no more than 11 denier per thread, and even more preferably no more than 10 denier per thread.

The total denier of the tow forming the body of material 6 is preferably no more than 30,000, more preferably no more than 28,000, and even more preferably no more than 25,000. pressure drop across the mouthpiece 2 than the bundles having higher total denier values. For proper body hardness of material 6, the tow preferably has a total denier of at least 8,000 and more preferably at least 10,000. from 6 to 10, while the total denier is from 11,000 to 22,000. Preferably, the cross-sectional shape of the tow fibers is Y-shaped, although other shapes, such as X-shaped fibers, with the same denier values can be used in other embodiments. per thread and total denier, as provided in this document.

In this example, the hollow tubular element 4 is the first hollow tubular element 4, and the mouthpiece includes a second hollow tubular element 8, also called a cooling element, which is located upstream of the first hollow tubular element 4. In this example, the second hollow tubular element 8 is located upstream next to the body of material 6 and end-to-end with it. The body of material 6 and the second hollow tubular element 8 individually have a substantially cylindrical common outer shape and have a common longitudinal axis. The second hollow tubular element 8 is formed from a plurality of layers of paper that are wound in parallel with butt seams to form the tubular element 8. In this example, the first and second layers of paper are made in a two-layer tube, although in other examples 3, 4 or more paper layers can be used. layers forming 3, 4 or more layer tubes. Other designs may be used, such as helically wound layers of paper, cardboard tubes, tubes formed using a papier-mâché type process, molded or extruded plastic tubes, or the like. The second hollow tubular element 8 can also be formed using a rigid ficell and/or rim paper as the second ficell 9 and/or rim paper 5, which are described herein, which means that a separate tubular element is not required. Rigid ficell and/or tipping paper are made to have a stiffness sufficient to withstand axial compressive forces and bending moments that may occur during manufacture and use of article 1. For example, rigid ficell and/or mouthpiece may have a density from 70 to 120 g/m ² , more preferably from 80 to 110 g/m ² . In addition or alternatively, the rigid ficell and/or tip paper may have a thickness of 80 µm to 200 µm, more preferably 100 µm to 160 µm or 120 µm to 150 µm. It may be desirable that both the second ficell 9 and the mouthpiece 5 have values in these ranges in order to achieve an acceptable overall level of stiffness for the second hollow tubular element 8.

The second hollow tubular 8 preferably has a wall thickness that can be measured in the same manner as the first hollow tubular 4, from at least about 100 µm to about 1.5 mm, preferably from 100 µm to 1 mm, and more preferably from 150 µm to 500 µm or about 300 µm. In this example, the second hollow tubular element 8 has a wall thickness of approximately 290 microns.

Preferably, the length of the second hollow tubular element 8 is less than about 50 mm. More preferably, the length of the second hollow tubular element 8 is less than about 40 mm. Even more preferably, the length of the second hollow tubular element 8 is less than about 30 mm. In addition or alternatively, the length of the second hollow tubular element 8 is preferably at least about 10 mm. Preferably, the length of the second hollow tubular element 8 is at least about 15 mm. In some preferred embodiments, the length of the second hollow tubular member 8 is from about 20 mm to about 30 mm, more preferably from about 22 mm to about 28 mm, even more preferably from about 24 to about 26 mm, and most preferably about 25 mm. In this example, the length of the second hollow tubular element 8 is 25 mm.

A second hollow tubular element 8 surrounds and forms an air gap within the mouthpiece 2 which acts as a cooling segment. The air gap defines a chamber through which the heated volatiles generated by the aerosol generating material 3 flow. occur during the manufacture and use of article 1. The second hollow tubular element 8 provides a physical displacement between the aerosol generating material 3 and the body of material 6. The physical displacement created by the second hollow tubular element 8 will provide a temperature gradient along the entire length of the second hollow tubular element 8.

Preferably, the mouthpiece 2 contains a cavity with an internal volume of more than 450 mm ³ . It has been found that providing a cavity of at least this volume enables the formation of an improved aerosol. This size of the cavity provides sufficient space within the mouthpiece 2 to allow the heated volatile components to cool, thereby allowing the aerosol generating material 3 to be exposed to higher temperatures than would otherwise be possible where they would produce too warm aerosol. In this example, the cavity is formed by the second hollow tubular element 8, but in alternative embodiments, it can be formed in another part of the mouthpiece 2. More preferably, the mouthpiece 2 contains a cavity, for example, formed inside the second hollow tubular element 8, having an internal volume of more than 500 mm ³ , and even more preferably more than 550 mm ³ , which further improves the aerosol. In some examples, the internal cavity contains a volume of from about 550 mm ³ to about 750 mm ³ , for example, about 600 mm ³ or 700 mm ³ .

The second hollow tubular element 8 may be configured to provide a temperature difference of at least 40 degrees Celsius between the heated evaporative component entering the first upstream end of the second hollow tubular element 8 and the heated volatile component exiting the second located downstream of the end of the second hollow tubular element 8. The second hollow tubular element 8 is preferably configured to provide a temperature difference of at least 60, 80 and preferably 100 degrees Celsius, between the heated volatile component included in the first, located upstream the end of the second hollow tubular 8 and the heated evaporative component exiting the second downstream end of the second hollow tubular 8. This temperature difference along the entire length of the second hollow tubular 8 protects the temperature sensitive body of material 6 from the high temperatures of the aerosol generating material 3 when it is heated.

In alternative articles, the second hollow tubular element 8 may be replaced by an alternative cooling element, for example, an element formed from a body of material that allows the aerosol to pass through it in the longitudinal direction and which also performs the function of cooling the aerosol.

In this example, the first hollow tubular 4, the body of material 6 and the second hollow tubular 8 are combined using a second ficell 9 that is wrapped around all three sections. Preferably the second ficell 9 has a basis weight of less than 50 g/m ² , more preferably from about 20 g/m ² to 45 g/m ² . Preferably the second ficell 9 has a thickness of 30 to 60 µm, more preferably 35 to 45 µm. The second ficell 9 is preferably a non-porous ficell having a permeability of less than 100 Coresta units, for example less than 50 Coresta units. However, in alternative embodiments, the implementation of the second ficell 9 may be a porous ficell, for example, having a permeability of more than 200 Coresta units.

In this example, the aerosol generating material 3 is wrapped in a wrapper 10. The wrapper 10 may be, for example, paper or paper-based foil. In this example, the wrap 10 is substantially airtight. In alternative embodiments, the wrapper 10 preferably has a permeability of less than 100 Coresta units, more preferably less than 60 Coresta units. It has been found that wraps with low permeability, for example having a permeability of less than 100 Coresta units, more preferably less than 60 Coresta units, result in improved aerosol formation in the aerosol generating material 3. Without being limited by theory, it is believed that this is due to a reduction in the loss of aerosol compounds passing through the wrapper 10. The permeability of the wrapper 10 can be measured in accordance with the ISO 2965:2009 standard relating to the determination of air permeability for materials used as cigarette paper, filter ficell and filter bond paper.

In this embodiment, the wrapper 10 comprises aluminum foil. Aluminum foil has been found to be particularly effective in enhancing aerosol generation within the aerosol generating material 3. In this example, the aluminum foil has a metal layer having a thickness of approximately 6 microns. In this example, the aluminum foil has a paper backing. However, in alternative arrangements, the aluminum foil may have a different thickness, such as 4 microns to 16 microns. The aluminum foil also does not need to have a paper backing, but may have a backing formed from other materials, for example, to provide adequate foil tear strength, or it may not have a backing material. In addition, metal layers or foils other than aluminum can also be used. The overall thickness of the wrap is preferably 20 µm to 60 µm, more preferably 30 µm to 50 µm, which makes it possible to produce a wrap having suitable heat transfer characteristics and structural integrity. The tensile force that can be applied to the wrapper before it breaks can be in excess of 3000 gram-force, such as 3000 to 10000 gram-force or 3000 to 4500 gram-force.

The article has a ventilation level of approximately 75% of the aerosol drawn through the article. In alternative embodiments, the article may have a ventilation level of 50% to 80% of the aerosol drawn through the article, such as 65% to 75%. Ventilation at these levels helps slow down the flow of aerosol drawn through the mouthpiece 2 and thereby allow the aerosol to cool sufficiently before it reaches the downstream end 2b of the mouthpiece 2. Ventilation is provided directly in the mouthpiece 2 of article 1. In this example, ventilation is provided in the second hollow tubular member 8, which has been found to be particularly useful in assisting the aerosol generation process. Ventilation is through the first and second parallel rows of perforations 12, in this case formed as laser perforations, at positions 17.925 mm and 18.625 mm, respectively, from the downstream mouthpiece end 2b of the mouthpiece 2. These perforations pass through the rim paper 5, the second ficell 9 and a second hollow tubular 8. In alternative embodiments, ventilation may be provided in the mouthpiece at other locations, such as in the material body 6 or the first tubular 4.

In this example, the aerosol-forming material added to the aerosol-generating substrate 3 contains 14% by weight of the aerosol-generating substrate 3. Preferably, the aerosol-forming material contains at least 5% by weight of the aerosol-generating substrate, more preferably at least 10%. Preferably, the aerosol-forming material contains less than 25% by weight of the aerosol-generating substrate, more preferably less than 20%, such as 10% to 20%, 12% to 18%, or 13% to 16%.

The aerosol generating material 3 is preferably in the form of a cylindrical rod of aerosol generating material. Regardless of the shape of the aerosol generating material, it preferably has a length of approximately 10 mm to 100 mm. In some embodiments, the length of the aerosol generating material is preferably in the range of from about 25 mm to 50 mm, more preferably in the range of from about 30 mm to 45 mm, and even more preferably from about 30 mm to 40 mm.

The volume of the aerosol generating material 3 provided can vary from about 200 mm ³ to about 4300 mm ³ , preferably from about 500 mm ³ to 1500 mm ³ , more preferably from about 1000 mm ³ to about 1300 mm ³ . Providing these volumes of aerosol generating material, for example from about 1000 mm ³ to about 1300 mm ³ , has been advantageously demonstrated to achieve an excellent aerosol having greater appeal and organoleptic characteristics compared to volumes selected from the lower end of the range.

The weight of the provided aerosol generating material 3 may be greater than 200 mg, such as from about 200 to 400 mg, preferably from about 230 to 360 mg, more preferably from about 250 to 360 mg. It has been found that providing a higher mass of aerosol generating material results in advantageously improved organoleptic characteristics compared to an aerosol generated from a lower mass of tobacco material.

The aerosol generating material or substrate is preferably formed from a tobacco material, as described herein, which includes a tobacco component.

In the tobacco material described herein, the tobacco component preferably comprises paper reconstituted tobacco. The tobacco component may also contain leaf tobacco, extruded tobacco, and/or tape molded tobacco.

The aerosol generating material 3 comprises reconstituted tobacco material having a density of less than about 700 milligrams per cubic centimeter (mg/cm3). Such tobacco material has been found to be particularly effective in providing an aerosol generating material that can be rapidly heated to release the aerosol, compared to denser materials. For example, the inventors tested the properties of various aerosol generating materials such as tape molded reconstituted tobacco material and paper reconstituted tobacco material when heated. It has been found that for any given aerosol-generating material, there is a particular zero heat flux temperature below which the net heat flux is endothermic, in other words more heat is entering the material than is leaving the material, and above which the net heat flux is exothermic, in other words , more heat leaves the material than enters the material when heat is applied to the material. Materials having a density less than 700 mg/cm ³ had a lower zero heat flux temperature. Since a significant portion of the heat flux exits the material by aerosol generation, the lower zero temperature of the heat flux has a favorable effect on the time required for the first release of the aerosol from the aerosol generating material. For example, aerosol generating materials having a density of less than 700 mg/cm ³ have been found to have a zero heat flux temperature of less than 164°C compared to materials with a density of more than 700 mg/cm ³ which have a zero heat flux temperature of greater than 164°C. C.

The density of the aerosol generating material also affects the rate at which heat passes through the material, with lower densities, eg below 700 mg/cm ³ , heat moving more slowly through the material, thereby allowing longer aerosol release.

The aerosol generating material 3 preferably comprises reconstituted tobacco material having a density of less than about 700 mg/cm ³ , such as paper reconstituted tobacco material. More preferably, the aerosol generating material 3 comprises reconstituted tobacco material having a density of less than about 600 mg/cm ³ . Alternatively or in addition, the aerosol generating material 3 preferably comprises a reconstituted tobacco material having a density of at least 350 mg/cm ³ which is considered to provide sufficient thermal conductivity of the material.

The tobacco material may be in the form of shredded tobacco. The cut tobacco may have a cut width of at least 15 cuts per inch (about 5.9 cuts per cm, which is equivalent to a cut width of about 1.7 mm). Preferably the cut tobacco has a cut width of at least 18 cuts per inch (about 7.1 cuts per cm, equivalent to a cut width of about 1.4 mm), more preferably at least 20 cuts per inch (about 7.9 cuts per cm, which corresponds to the width of the cut part, equal to approximately 1.27 mm). In one example, cut tobacco has a cut width of 22 cuts per inch (about 8.7 cuts per cm, which is equivalent to a cut width of about 1.15 mm). Preferably, the cut tobacco has a cut width of 40 or less cuts per inch (about 15.7 cuts per cm, which is equivalent to a cut width of about 0.64 mm). It has been found that a cut width of 0.5 mm to 2.0 mm, such as 0.6 mm to 1.5 mm or 0.6 to 1.7 mm, results in a tobacco material that is preferred with in terms of surface area to volume ratio, especially when heated, overall density and pressure drop of the substrate 3. Cut tobacco can be formed from a mixture of types of tobacco material, for example, a mixture of one or more of: cast tobacco. Preferably, the tobacco material comprises paper reconstituted tobacco or a mixture of paper reconstituted tobacco and leaf tobacco.

In the tobacco material described herein, the tobacco material may contain a filler component. The excipient component is typically a non-tobacco component, that is, a component that does not include tobacco-derived ingredients. The filler component may be a non-tobacco fiber such as wood fiber, pulp or wheat fiber. The filler component may also be an inorganic material such as chalk, perlite, vermiculite, diatomaceous earth, colloidal silicon dioxide, magnesium oxide, magnesium sulfate and magnesium carbonate. The filler component may also be a non-tobacco molded material or a non-tobacco extruded material. The filler component may be present in an amount of 0 to 20% by weight of the tobacco material, or in an amount of 1 to 10% by weight of the composition. In some embodiments, there is no filler component.

In the tobacco material described herein, the tobacco material contains an aerosol-forming material. In this context, an "aerosol forming material" is an agent that promotes the formation of an aerosol. The aerosol-forming material may assist in the generation of an aerosol by facilitating the initial evaporation and/or condensation of a gas into a respirable solid and/or liquid aerosol. In some embodiments, the aerosol generating material can improve flavor delivery from the aerosol generating material. In general, any suitable aerosol generating material or agents may be included in the aerosol generating material of the present invention, including those described herein. Other suitable aerosol forming materials include, but are not limited to: a polyol such as sorbitol, glycerol and glycols such as propylene glycol or triethylene glycol; low molecular weight alcohol such as monohydric alcohols, high boiling point hydrocarbons, acids such as lactic acid, glycerol derivatives, esters such as diacetin, triacetin, triethylene glycol diacetate, triethyl citrate or myristates including ethyl myristate and isopropyl myristate, and esters of aliphatic carboxylic acids , such as in the form of methyl stearate, dimethyl dodecanedioate and dimethyltetradecanedioate. In some embodiments, the aerosol-forming material may be glycerol, propylene glycol, or a mixture of glycerol and propylene glycol. Glycerin may be present in an amount of 10 to 20% by weight of the tobacco material, such as 13 to 16% by weight of the composition, or about 14% to 15% by weight of the composition. Propylene glycol, if present, may be present in an amount of 0.1 to 0.3% by weight of the composition.

The aerosol-forming material may be included in any component, such as any tobacco component, tobacco material, and/or filler component, if present. Alternatively or additionally, the aerosol forming material may be added to the tobacco material separately. In any case, the total amount of aerosol-forming material in the tobacco material may be as defined herein.

The tobacco material may contain from 10% to 90% by weight of the tobacco leaf, with the aerosol forming material being provided in an amount of up to about 10% by weight of the tobacco leaf. In order to achieve an overall level of 10% to 20% by weight of aerosolizing material of the tobacco material, it has been advantageously found that it can be added at higher weight (mass) percentages to another component of the tobacco material, such as reconstituted tobacco material.

The tobacco material described herein contains nicotine. The nicotine content is from 0.5 to 1.75% by weight of the tobacco material and may be, for example, from 0.8 to 1.5% by weight of the tobacco material. In addition or alternatively, the tobacco material contains between 10% and 90% by weight of the tobacco leaf with a nicotine content of more than 1.5% by weight of the tobacco leaf. Advantageously, it has been found that the use of a tobacco leaf with a nicotine content above 1.5% in combination with a base material with a lower nicotine content, such as paper reconstituted tobacco, provides a tobacco material with a suitable level of nicotine, but with better organoleptic characteristics than using only one paper reconstituted tobacco. The tobacco leaf, eg cut tobacco, may have, for example, a nicotine content between 1.5% and 5% by weight of the tobacco leaf.

The tobacco material described herein may contain an aerosol modifying agent, such as any of the flavors described herein. In one embodiment, the tobacco material contains menthol, forming a menthol product. The tobacco material may contain 3 to 20 mg of menthol, preferably 5 to 18 mg, and more preferably 8 to 16 mg of menthol. In this example, the tobacco material contains 16 mg of menthol. The tobacco material may contain from 2% to 8% by weight of menthol, preferably from 3% to 7% by weight of menthol, and more preferably from 4% to 5.5% by weight of menthol. In one embodiment, the tobacco material includes 4.7% by weight of menthol. Such high concentration levels of menthol can be achieved using a high percentage of reconstituted tobacco material, eg, greater than 50% tobacco material by weight. Alternatively or in addition, the use of a large volume of aerosol generating material, such as tobacco material, allows for higher levels of menthol concentration, which can be achieved, for example, when more than about 500 mm ³ or preferably more than about 1000 mm ³ of aerosol generating material is used. such as tobacco material.

In the compositions described herein, where the amount is given in % by weight (wt.%), for the avoidance of doubt, this refers to the basis in terms of dry weight, unless otherwise specifically indicated. Thus, any water that may be present in the tobacco material, or any of its components, is completely ignored in determining the weight percentages. The water content of the tobacco material described herein may vary and may be, for example, from 5 to 15% by weight. The water content of the tobacco material described herein may vary depending on, for example, temperature, pressure, and humidity conditions under which the compositions are maintained. The water content can be determined by Karl-Fischer analysis, which is known to those skilled in the art. On the other hand, for the avoidance of doubt, even when the aerosol-forming material is a component that is in a liquid phase, such as glycerol or propylene glycol, any component other than water is included in the weight of the tobacco material. However, when the aerosol-forming material is contained in the tobacco component of the tobacco material or in the excipient component (if present) of the tobacco material, instead of or in addition to being added separately to the tobacco material, the aerosol-forming material is not included in the weight of the tobacco or excipient component, but is included in the weight of "aerosol-forming material" in weight percent, as defined in this document. All other ingredients present in the tobacco component are included in the weight of the tobacco component, even if they are not of tobacco origin (eg, non-tobacco fibers in the case of paper reconstituted tobacco).

In one embodiment, the tobacco material comprises a tobacco component as defined herein and an aerosol forming material as defined herein. In one embodiment, the tobacco material consists essentially of a tobacco component, as defined herein, and an aerosol forming material, as defined herein. In one embodiment, the tobacco material consists of a tobacco component, as defined herein, and an aerosol forming material, as defined herein.

Paper reconstituted tobacco is present in the tobacco component of the tobacco material described herein in an amount of 10% to 100% by weight of the tobacco component. In embodiments of the present invention, paper reconstituted tobacco is present in an amount of 10% to 80% by weight or 20% to 70% by weight of the tobacco component. In another embodiment, the tobacco component consists essentially of or consists of paper reconstituted tobacco. In preferred embodiments, tobacco leaf is present in the tobacco component of the tobacco material in an amount of at least 10% by weight of the tobacco component. For example, tobacco leaf may be present in an amount of at least 10% by weight of the tobacco component while the remainder of the tobacco component comprises paper reconstituted tobacco, banded molded reconstituted tobacco, or a combination of banded molded reconstituted tobacco and another form of tobacco such as tobacco granules.

Paper reconstituted tobacco refers to tobacco material obtained by solvent extraction of tobacco raw materials, resulting in an extract of soluble substances and a residue containing fibrous material, then the resulting extract (usually after thickening and, if required, after additional processing) is recombined with fibrous material from the residue (usually after refining the fibrous material and possibly after adding some non-tobacco fibers) by depositing the extract on the fibrous material. The recombination process is similar to the process of paper making.

The paper reconstituted tobacco can be any type of paper reconstituted tobacco that is known in the art. In a specific embodiment, paper reconstituted tobacco is made from raw materials containing one or more of: tobacco strips, tobacco stems, and whole leaf tobacco. In a further embodiment, paper reconstituted tobacco is produced from a raw material consisting of tobacco strips and/or whole leaf tobacco and tobacco stems. However, in other embodiments, cuttings, dust, and flags may alternatively or additionally be used as starting material.

Paper reconstituted tobacco for use in the tobacco material described herein can be prepared by methods known to those skilled in the art for making paper reconstituted tobacco.

In the examples described above, the mouthpiece 2 comprises one body of material 6. In other examples, the mouthpiece shown in FIG. 1a and 1b may include several bodies of material. The mouthpiece 2 may contain a cavity between the bodies of material.

In some examples, the mouthpiece 2 downstream of the aerosol generating material 3 may contain a wrapper, such as a first or second ficell 7, 9 or rim paper 5, that contains an aerosol modifying agent as described herein. The aerosol modifying agent may be located on the inward or outward facing surface of the mouthpiece wrap. For example, the aerosol modifying agent may be provided on the area of the wrapper, such as the outward facing surface of the rim paper 5, which comes into contact with the user's lips during use. By placing the aerosol modifying agent or other sensate material on the outwardly facing surface of the mouthpiece wrap, the aerosol modifying agent can be transferred to the user's lips during use. The transfer of an aerosol modifying agent or other sensuous material to the consumer's lips during use of the article may modify the organoleptic properties (eg, taste) of the aerosol generating substrate 3 or otherwise provide the consumer with an alternative sensory experience. For example, the aerosol modifying agent may impart flavor to the aerosol generating substrate 3. The aerosol modifying agent may be at least partially dissolved in water such that it is transferred to the user via the saliva of the user. The aerosol modifying agent may be volatilized by the heat generated by the aerosol delivery system. This may facilitate the transfer of the aerosol modifying agent to the aerosol generated by the aerosol generating substrate 3. A suitable sensate material may be a flavoring agent as described herein, sucralose, or a cooling agent such as menthol or the like.

The non-combustible aerosol supply device is used to heat the aerosol generating material 3 of the articles 1 described herein. The non-combustible aerosol delivery device preferably comprises a coil as this has been found to provide improved heat transfer to the article 1 compared to other devices.

In some examples, the coil is configured, in use, to cause heating of the at least one electrically conductive heating element such that thermal energy is transferred from the at least one electrically conductive heating element to the aerosol generating material to thereby cause the aerosol generating material to be heated.

In some examples, the coil is configured to, in use, generate a varying magnetic field to penetrate at least one heating element to thereby cause induction heating and/or magnetohysteresis heating of at least one heating element. In such an arrangement, one or each heating element may be referred to as a "susceptor" as defined herein. A coil that is configured, in use, to generate a varying magnetic field to penetrate at least one electrically conductive heating element to thereby cause inductive heating of at least one electrically conductive heating element may be referred to as an "induction coil" or " inductor".

The device may include one or more heating elements, such as electrically conductive heating elements, and the one or more heating elements may preferably be positioned or capable of being positioned relative to the coil in such a manner as to provide such heating to the one or more heating elements. One or more heating elements may be in a fixed position relative to the coil. Alternatively, at least one heating element, for example, at least one electrically conductive heating element, may be included in the article 1 for insertion into the heating zone of the device, and the article 1 also contains an aerosol generating material 3 and can be removed from the heating zone after use. Alternatively, both the device and such article 1 may comprise at least one suitable heating element, for example at least one electrically conductive heating element, and the coil may cause heating of one or more heating elements of each device and article in the event that when the product is in the heating zone.

In some examples, the coil has a helical shape. In some examples, the coil surrounds at least a portion of the heating zone of the device, which is configured to receive the aerosol generating material. In some examples, the coil is a helical coil that surrounds at least a portion of the heating zone.

In some examples, the device includes a conductive heating element that at least partially surrounds the heating zone, and the coil is a helical coil that surrounds at least a portion of the conductive heating element. In some examples, the electrically conductive heating element is tubular. In some examples, the coil is an inductor.

In some instances, the use of a coil allows the non-flammable aerosol delivery device to reach operating temperature faster than the aerosol delivery device without a coil. For example, a non-flammable aerosol device including a coil as described above can reach an operating temperature where the first puff can be completed in less than 30 seconds from the start of the device heating program, more preferably in less than 25 seconds. In some examples, the device can reach operating temperature in about 20 seconds after the device warm-up program is started.

It has been found that the use of a coil as described herein in a device for heating an aerosol generating material accelerates the generation of an aerosol. For example, consumers report that the aerosol generated by a device including the coil described herein feels closer to that generated in factory-manufactured cigarettes (FMC) than that produced by other non-flammable aerosol delivery systems. While not wishing to be bound by theory, it is believed that this is due to the reduced time it takes to reach the required heating temperature when using a coil, the higher heating temperatures achieved when using a coil, and/or the fact that the coil allows such systems to simultaneously heat a relatively large the volume of the aerosol-generating material so that the aerosol temperature resembles that of the FMC aerosol. In FMC products, the burning charcoal generates a hot aerosol that heats the tobacco in the tobacco rod behind the charcoal as the aerosol is drawn through the rod. This hot aerosol is understood to release aromatics from the tobacco in the rod behind the burning charcoal. It is believed that the device including the coil described herein is also capable of heating an aerosol-generating material, such as the tobacco material described herein, to release aromatic compounds, resulting in an aerosol that is said to be more aerosol-like. FMC.

The use of an aerosol delivery system including a coil as described herein, for example an induction coil that heats at least a portion of the aerosol generating material to at least 200°C, more preferably at least 220°C, can generate an aerosol of an aerosol generating material that has particular characteristics that are considered to be more similar to those of an FMC product. For example, when heating an aerosol generating material comprising nicotine using an induction heater heated to a temperature of at least 250° C. for a two second period with an air flow of at least 1.50 L/m during the period, one or more of the following characteristics:

at least 10 μg of nicotine is aerosolized from the aerosol generating material;

the weight ratio in the generated aerosol of aerosol-forming material to nicotine is at least about 2.5:1, preferably at least 8.5:1;

at least 100 µg of the aerosol-generating material can be obtained as an aerosol from the aerosol-generating material;

the average particle or droplet size in the generated aerosol is less than about 1000 nm; And

the density of the aerosol is at least 0.1 μg/cm ³ .

In some instances, at least 10 μg of nicotine, preferably at least 30 or 40 μg of nicotine, is aerosolized from the aerosol generating material at an air flow of at least 1.50 l/m for a period. In some instances, less than about 200 micrograms, preferably less than about 150 micrograms, or less than about 125 micrograms of nicotine is aerosolized from the aerosol generating material at an air flow of at least 1.50 L/m for a period.

In some cases, the aerosol contains at least 100 μg of aerosol-forming material, preferably at least 200 μg, 500 μg or 1 mg of aerosol-forming material is aerosolized from the aerosol-generating material at an air flow of at least 1.50 l/m for a period. Aerosol-forming material may preferably contain or consist of glycerol.

As defined herein, the term "average particle or droplet size" refers to the average size of the solid or liquid components of an aerosol (ie, components suspended in a gas). If the aerosol contains suspended liquid droplets and suspended solids, the term refers to the average size of all components together.

In some cases, the average particle or droplet size in the resulting aerosol may be less than about 900 nm, 800 nm, 700 nm, 600 nm, 500 nm, 450 nm, or 400 nm. In some cases, the average particle or droplet size may be greater than 25 nm, 50 nm, or 100 nm.

In some cases, the density of the aerosol generated during this period is at least 0.1 µg/cm ³ . In some cases, the density of the aerosol is at least 0.2 µg/cm ³ , 0.3 µg/cm ³ or 0.4 µg/cm ³ . In some instances, the aerosol density is less than about 2.5 µg/cm ³ , 2.0 µg/cm ³ , 1.5 µg/cm ³ , or 1.0 µg/cm ³ .

The non-combustible aerosol supply device is preferably configured to heat the aerosol generating material 3 of the article 1 to a maximum temperature of at least 160°C. Preferably, the non-combustible aerosol supply device is configured to heat the aerosol-forming material 3 of the article 1 to a maximum temperature of at least about 200°C, or at least about 220°C, or at least about 240°C, more preferably at least at least about 270° C. at least once during the heating process followed by the non-flammable aerosol delivery device.

The use of an aerosol delivery system comprising a coil as described herein, for example an induction coil that heats at least a portion of the aerosol generating material to at least 200°C, more preferably at least 220°C, can generate an aerosol from aerosol-generating material in article 1 as described herein, which has a higher temperature when the aerosol exits the mouth end of the mouthpiece 2 than previous aerosol-generating devices considered closer to an FMC product. For example, the maximum aerosol temperature measured in the mouthpiece of article 1 may preferably be over 50°C, more preferably over 55°C, and even more preferably over 56°C or 57°C. In addition or alternatively, the maximum temperature of the aerosol measured in the mouthpiece of the article 1 may be less than 62°C, more preferably less than 60°C and more preferably less than 59°C. In some embodiments, the implementation of the maximum temperature of the aerosol, measured in the mouthpiece of the product 1, may preferably be from 50°C to 62°C, more preferably from 56°C to 60°C.

FIG. 2 shows an example of a non-combustible aerosol generating device 100 for generating aerosol from an aerosol generating medium/aerosol generating material, such as the aerosol generating material 3 of articles 1 described herein. In general, device 100 can be used to heat a replaceable article 110 containing an aerosol generating medium, such as articles 1 described herein, to generate an aerosol or other respirable medium that is inhaled by a user of device 100. Device 100 and replaceable article 110 together form system.

The device 100 includes a housing 102 (in the form of an outer shell) that encloses and contains the various components of the device 100. The device 100 has an opening 104 at one end through which an article 110 can be inserted for heating by a heating assembly. In use, article 110 may be wholly or partially inserted into a heating assembly where it may be heated by one or more components of the heating assembly.

In this example, the device 100 includes a first end element 106 that includes a cap 108 that can be moved relative to the first end element 106 to cover the opening 104 when the article 110 is not present. In FIG. 2, the cap 108 is shown in an open configuration, however, the cap 108 may change to a closed configuration. For example, the user may cause the cap 108 to slide in the direction of the arrow "B".

The device 100 may also include a user actuated control 112, such as a button or switch, which, when pressed, actuates the device 100. For example, the user may turn on the device 100 by actuating the switch 112.

The device 100 may also include an electrical component, such as a connector/port 114, that can receive a cable for charging the battery of the device 100. For example, the connector 114 can be a charging port, such as a USB charging port.

Figure 3 shows the device 100 shown in figure 2, with the outer shell 102 removed and without the product 110. The device 100 defines the longitudinal axis 134.

As shown in Fig.3, the first end element 106 is located at one end of the device 100, and the second end element 116 is located at the opposite end of the device 100. The first and second end elements 106, 116 together, at least partially, form the end surfaces of the device 100 For example, the bottom surface of the second end member 116 at least partially defines the bottom surface of the device 100. The edges of the outer shell 102 may also form a portion of the end surfaces. In this example, the cap 108 also forms a portion of the upper surface of the device 100.

The end of the device closest to opening 104 may be known as the proximal end (or mouth end) of device 100 because it is closest to the user's mouth during use. In use, the user inserts the product 110 into the opening 104, operates the user control 112 to start heating the aerosol generating material, and draws in the aerosol generated in the device. This causes the aerosol to flow through the device 100 in a flow path towards the proximal end of the device 100.

The other end of the device furthest from opening 104 may be known as the distal end of device 100 since it is furthest away from the user's mouth in use. As the user picks up the aerosol generated in the device, the aerosol flows from the distal end of the device 100.

The device 100 further comprises a power supply 118 . The power source 118 may be, for example, a rechargeable battery such as a rechargeable battery or a non-rechargeable battery. Examples of suitable batteries include, for example, a lithium battery (such as a lithium ion battery), a nickel battery (such as a nickel-cadmium battery), and an alkaline battery. The battery is electrically connected to the heating unit to supply electricity when needed and controlled by a controller (not shown) to heat the aerosol generating material. In this example, the battery is attached to a central support 120 that holds the battery 118 in place.

The device further comprises at least one electronic module 122. The electronic module 122 may include, for example, a printed circuit board (PCB). PCB 122 may support at least one controller such as a processor and memory. Circuit board 122 may also include one or more electrical tracks for electrically connecting various electronic components of device 100 together. For example, battery terminals may be electrically connected to circuit board 122 such that power can be supplied to the entire device 100. be electrically connected to the battery via electrical tracks.

In the exemplary apparatus 100, the heating assembly is an induction heating assembly and includes various components for heating the aerosol generating material of the article 110 through an induction heating process. Induction heating is a process of heating an electrically conductive object (for example, a current collector) due to electromagnetic induction. The induction heating assembly may include an inductive element, such as one or more inductors, and a device for transmitting a varying electric current, such as an alternating electric current, through the inductive element. A changing electric current in an inductive element creates a changing magnetic field. The changing magnetic field penetrates through a current collector suitably positioned with respect to the inductive element and generates eddy currents inside the current collector. The current collector has an electrical resistance to eddy currents, and, therefore, the flow of eddy currents through the current collector having resistance leads to heating of the current collector due to Joule heating. In cases where the current collector contains a ferromagnetic material such as iron, nickel or cobalt, heat can also be generated by magnetic hysteresis losses in the current collector, i.e. by changing the orientation of the magnetic dipoles in the magnetic material as a result of their alignment with the changing magnetic field. With induction heating, compared to, for example, conductive heating, heat is generated inside the current collector, which ensures rapid heating. In addition, there is no need for any physical contact between the induction heater and the current collector, allowing greater freedom in design and application.

The induction heater assembly of exemplary device 100 includes a current collector device 132 (referred to herein as a "susceptor"), a first inductor 124, and a second inductor 126. The first and second inductors 124, 126 are made of an electrically conductive material. In this example, the first and second inductors 124, 126 are made of litz wire/cable wound in a helix to form helical inductors 124, 126. Litz wire contains a number of individual wires, insulated and twisted together, which form one wire. Litz wires are designed to reduce losses due to skin effect in the conductor. In the exemplary device 100, the first and second inductors 124, 126 are made of copper litz wire having a rectangular cross section. In other examples, the litz wire may have a cross section of a different shape, such as a round one.

The first inductor 124 is configured to generate a first changing magnetic field to heat the first section of the current collector 132, and the second inductor 126 is configured to generate a second changing magnetic field to heat the second section of the current collector 132. In this case, for example, the first inductor 124 is located next to the second inductor 126 in the direction along the longitudinal axis 134 of the device 100 (ie, the first and second inductors 124, 126 do not overlap). The pantograph arrangement 132 may include one or two or more separate pantographs. The ends 130 of the first and second inductors 124, 126 may be connected to the circuit board 122.

It should be noted that the first and second coils 124, 126 in some examples may have at least one characteristic different from each other. For example, the first inductor 124 may have at least one characteristic different from the second inductor 126. More specifically, in one example, the first inductor 124 may have a different inductance than the second inductor 126. As shown in FIG. 3, the first and second inductors 124, 126 are of different lengths such that the first inductor 124 is wound around a smaller portion of the current collector 132 than the second inductor 126. Thus, the first inductor 124 may comprise a different number of turns than the second inductor 126 (provided that the distance between the individual turns is substantially the same). In yet another example, the first inductor 124 may be made of a material different from the material of the second inductor 126. In some examples, the first and second inductors 124, 126 may be substantially identical.

In this example, the first inductor 124 and the second inductor 126 are wound in opposite directions. This can be useful when the inductors operate at different times. For example, first the first inductor 124 may act to heat the first section/section of product 110, and later the second inductor 126 may act to heat the second section/section of product 110. Winding the coils in opposite directions allows the current to be reduced, induced in an inactive coil when used in conjunction with a specific type of control circuit. 3, the first inductor 124 is a right-wound helix and the second inductor 126 is a left-wound helix. However, in another embodiment, the inductors 124, 126 may be wound in the same direction, or the first inductor 124 may be a left-wound helix and the second inductor 126 may be a right-wound helix.

In this example, the current collector 132 is hollow and thus forms a container in which the aerosol generating material is placed. For example, article 110 may be inserted into current collector 132. In this example, current collector 120 is tubular with a circular cross section.

The current collector 132 may be made of one or more materials. The current collector 132 preferably comprises nickel or cobalt plated carbon steel.

In some examples, current collector 132 may include at least two materials capable of being heated at two different frequencies to selectively aerosolize at least two materials. For example, the first section of current collector 132, which is heated by the first inductor 124, may contain a first material, and the second section of current collector 132, which is heated by the second inductor 126, may contain a second other material. In another example, the first section may comprise first and second materials, where the first and second materials may be heated differently depending on the operation of the first inductor 124. The first and second materials may be side by side along an axis defined by the current collector 132, or may form different layers within the current collector 132. Similarly, the second section may comprise third and fourth materials, where the third and fourth materials may be heated differently depending on the operation of the second. coils 126 inductors. The third and fourth materials may be adjacent along an axis defined by the current collector 132, or may form different layers within the current collector 132. The third material may be the same as the first material, and the fourth material may be the same as, for example, the second material. Alternatively, each of the materials may be a different material. The current collector may comprise, for example, carbon steel or aluminum.

The device 100 shown in FIG. 3 further comprises an insulating element 128, which may be generally tubular and at least partially surround the current collector 132. The insulating element 128 may be made of any insulating material, such as plastic. In this particular example, the insulating element is made of polyether ether ketone (PEEK). The insulating element 128 allows the various components of the device 100 to be insulated from the heat generated in the current collector 132.

The insulating element 128 may also fully or partially support the first and second inductors 124, 126. For example, as shown in FIG. 3, the first and second inductors 124, 126 are located around the insulating element 128 and are in contact with the radially outer surface of the insulating element 128. In some examples, the insulating element 128 is not adjacent to the first and second coils 124, 126 inductance. For example, there may be a small gap between the outer surface of the insulating member 128 and the inner surface of the first and second inductors 124, 126.

In a specific example, current collector 132, insulating member 128, and first and second inductors 124, 126 are aligned about the central longitudinal axis of current collector 132.

In FIG. 4 shows a side view of the device 100 in partial section. In this example, the outer sheath 102 is present. The rectangular cross-sectional shape of the first and second inductors 124, 126 is more clearly visible.

The device 100 further includes a support 136 that engages with one end of the current collector 132 to hold the current collector 132 in place. The support 136 is connected to the second end element 116.

The device may also include a second circuit board 138 connected to the control element 112.

The device 100 further comprises a second cap/lid 140 and a spring 142 positioned towards the distal end of the device 100. The spring 142 allows the second cover 140 to be opened to provide access to the current collector 132. The user may open the second cover 140 to clean the current collector 132 and/or support 136.

The device 100 further comprises an expansion chamber 144 that extends from the proximal end of the current collector 132 to the opening 104 of the device. At least partially within the expansion chamber 144 is a retaining clip 146 that abuts against and holds the product 110 during its insertion into the device 100. The expansion chamber 144 is connected to the end member 106.

In FIG. 5 is an exploded view of the device 100 shown in FIG. 4, without outer shell 102.

In FIG. 6A shows a cross section of a portion of the device 100 shown in FIG. 4. In FIG. 6B is an enlarged view of the area shown in FIG. 6A. In FIG. 6A and 6B show an article 110 placed in a current collector 132, where the size of the article 110 is such that the outer surface of the article 110 is adjacent to the inner surface of the current collector 132. This provides the most efficient heating. The product 110 according to this example contains an aerosol generating material 110a. The aerosol generating material 110a is located within the current collector 132. The article 110 may also include other components such as a filter, wrapping materials, and/or a cooled structure.

In FIG. 6B shows that the outer surface of the current collector 132 is spaced from the inner surface of the inductors 124, 126 by a distance 150 measured in a direction perpendicular to the longitudinal axis 158 of the current collector 132. In one particular example, the distance 150 is approximately 3 to 4 mm, approximately 3- 3.5 mm or approximately 3.25 mm.

In FIG. 6B also shows that the outer surface of the insulating member 128 is spaced from the inner surface of the inductors 124, 126 by a distance 152 measured in a direction perpendicular to the longitudinal axis 158 of the current collector 132. In one particular case, for example, the distance 152 is approximately 0.05 mm. In another example, distance 152 is substantially 0 mm so that inductors 124, 126 abut and touch insulating member 128.

In one example, the current collector 132 has a wall thickness 154 from about 0.025 mm to 1 mm, or about 0.05 mm.

In one example, current collector 132 is about 40 to 60 mm long, about 40 to 45 mm long, or about 44.5 mm long.

In one example, the insulating member 128 has a wall thickness 156 of about 0.25 mm to 2 mm, 0.25 mm to 1 mm, or about 0.5 mm.

During use, the articles 1 described herein can be inserted into a non-combustible aerosol delivery device, such as the device 100 described with reference to FIGS. 2-6. At least a portion of the mouthpiece 2 of the article 1 protrudes from the non-combustible aerosol delivery device 100 and can be placed in the user's mouth. The aerosol is produced by heating the aerosol generating material 3 with the device 100. The aerosol generated by the aerosol generating material 3 passes through the mouthpiece 2 into the user's mouth.

The articles 1 described herein have particular advantages, for example, when used with non-flammable aerosol delivery devices such as the device 100 described with reference to FIGS. 2-6. In particular, it has been unexpectedly found that the first tubular member 4 formed from the fibrous tow has a significant effect on the temperature of the outer surface of the mouthpiece 2 of the articles 1. For example, in the case where the hollow tubular member 4 formed from the fibrous tow is wrapped with an outer wrap, for example, tipping paper 5, it has been found that the outer surface of the overwrap in a longitudinal position corresponding to the position of the hollow tubular 4 reaches, in use, a maximum temperature of less than 42°C, preferably less than 40°C, and more preferably less than 38°C or less than 36 °C.

Table 2.0 below shows the outer surface temperature of the product 1 described herein with reference to FIG. 1a and 1b when heated using the apparatus 100 described herein with reference to FIG. 2-6. The first, second, and third temperature probes were used at the first, second, and third positions, respectively, along mouthpiece 2 of article 1. The first position (referred to as position 1 in Table 2.0) was 4 mm from the downstream end 2b of the mouthpiece 2, the second position (indicated in table 2.0 as position 2) was 8 mm from the downstream end 2b of the mouthpiece 2, and the third position (indicated in table 2.0 as position 3) was 12 mm from the downstream end 2b of mouthpiece 2.

Thus, the first position was on the outer surface of the part of the mouthpiece 2 in which the first tubular element 4 is located, while the second and third positions were on the outer surface of the part of the mouthpiece 2 in which the body of material 6 is located.

The test of the control product was carried out for the purpose of comparison with the tubular elements 4 of the fibrous bundle described in this document, and instead of the fibrous tubular element 4 of the bundle, a known helically wound paper tube having the same design as the second hollow tubular element 8 described in this document was used, but 6 mm long, not 25 mm.

The test was carried out for the first 5 puffs of the product, since by the 5th puff the temperature reached, as a rule, the maximum value and began to fall, so an approximate maximum temperature could be observed. For each sample, the test was carried out 5 times, and the temperatures provided were the average values for these 5 tests. The well-known Health Canada Intense regimen (puff volume 55 ml, puff duration 2 sec, pause between puffs 30 sec) was used using standard test equipment.

As shown in the table below, it was unexpectedly found that the use of a tubular element 4 formed from a fibrous bundle reduces the temperature of the outer surface of the mouthpiece 2 compared with the control product at each puff and at each test position on the mouthpiece 2. The tubular element 4 formed fiber tow, is particularly effective in lowering the temperature at the first position of the probe, where the consumer's lips will be located when using product 1. In particular, the temperature of the outer surface of the mouthpiece 2 at the position of the first probe decreased by more than 7 ° C during the first three puffs and more than 5°C on the fourth and fifth puffs.

Table 2.0 Probe position Expendable part of the mouthpiece end Puff 1 Puff 2 Puff 3 Puff 4 Puff 5 1 Paper tube (control) 38.98 42.50 43.26 42.38 40.52 Bundled tubular element 4 31.79 35.00 35.72 35.46 34.64 2 Paper tube (control) 41.60 45.34 47.05 46.36 44.58 Bundle tubular element 4 40.32 43.48 43.73 43.21 41.73 3 Paper tube (control) 46.71 48.93 50.51 53.14 54.63 Bundle tubular element 4 45.43 47.73 47.64 47.72 47.36

In FIG. 7 shows a method for manufacturing an article for use in a non-flammable aerosol delivery system. In step S101, the first and second sections of the aerosol generating material, each containing an aerosol forming material, are positioned adjacent to the respective first and second longitudinal ends of the mouthpiece shaft, the mouthpiece shaft comprising a shaft of a hollow tubular element formed from a fibrous bundle located between the first and second ends. . In this example, the shaft of the hollow tubular element comprises a first hollow tubular element 4 with twice the length, placed between the first and second respective bodies of material 6. At the outer end of each body of material 6, a corresponding second tubular element 8 is positioned and adjacent to the outer ends of these second tubular elements 8 on which the first and second portions of the aerosol generating material are positioned. The stem of the mouthpiece is wrapped with the second ficella described herein.

In step S102, the first and second portions of the aerosol generating material are connected to the mouthpiece shaft. In this example, this is done by wrapping the tipping paper 5, as described herein, around the stem of the mouthpiece and at least a portion of each of the portions of the aerosol generating material 3. In this example, the tipping paper 5 extends for a distance of approximately 5 mm in the longitudinal direction over the outer the surface of each section of the aerosol generating material 3.

In step S103, the shaft of the hollow tubular is cut to form first and second articles, each article comprising a mouthpiece comprising a portion of the shaft of the hollow tubular at the downstream end of the mouthpiece. In this example, a first hollow tubular member 4 with twice the length of the mouthpiece stem is cut at a location approximately midway along its length to form first and second substantially identical articles.

The various embodiments described herein are presented only to assist in the understanding and study of the claimed features. These embodiments are presented only as a representative example of embodiments and are not exhaustive and/or exclusive. It should be noted that the advantages, embodiments, examples, functions, features, structures, and/or other aspects described herein are not to be construed as limitations on the scope of the invention as defined by the claims, or limitations on the equivalents of the claims, and that may other embodiments may be used and modifications may be made without departing from the scope of the claimed invention. Various embodiments of the present invention may appropriately comprise, consist of, or constitute substantially suitable combinations of the disclosed elements, components, features, parts, steps, means, etc. other than those specifically described herein. In addition, the present disclosure may include other inventions not currently claimed but which may be claimed in the future.

Claims (31)

1. An article for use in a non-flammable aerosol delivery system, comprising: aerosol generating material; And a mouthpiece located downstream relative to the aerosol-generating material, wherein the mouthpiece comprises a body of material in the form of a cylinder having a longitudinal axis, and a capsule embedded in the body of material so that the capsule is surrounded on all sides by the material forming the body, while the capsule has a shell encapsulating the liquid aerosol modifying agent, and wherein the largest cross-sectional area of the capsule, measured perpendicular to the longitudinal axis, is less than 28% of the cross-sectional area of the material body, measured perpendicular to the longitudinal axis. 2. The product according to claim. 1, in which the body of the material is formed from a fibrous bundle. 3. The product according to claim 2, in which the body of material is formed from a fibrous tow having a denier per thread from 5 to 12 and a total denier from 8000 to 30000. 4. The product according to claim 3, in which the body of material is formed from a fibrous tow having a denier per thread from 6 to 10 and a total denier from 10,000 to 25,000. 5. The product according to claim 4, in which the body of material is formed from a fibrous tow having a denier per thread from 7 to 10 and a total denier from 11,000 to 22,000. 6. The product according to any one of paragraphs. 2-5, wherein the fibrous tow comprises cellulose acetate tow. 7. The product according to any one of paragraphs. 2-6, wherein the fiber tow comprises a weight per mm of material body length that is from about 10% to about 30% of the range between the minimum and maximum weight values of the tow performance curve for the fiber tow. 8. The product according to any one of paragraphs. 2-7, in which the fibrous tow contains a plasticizer in an amount of from 0.2 to 4% by weight of the fibrous tow or from 0.5 to 3% by weight of the fibrous tow. 9. The product according to any one of paragraphs. 1-8, wherein the capsule is ruptured by an external force to selectively release the liquid aerosol modifying agent. 10. The product according to any one of paragraphs. 1-9, wherein the pressure drop across the mouthpiece is less than about 40 mmH2O. Art. and/or more than about 15 mm of water. Art. 11. The product according to claim 10, in which the pressure drop across the mouthpiece is less than about 32 mm of water. Art. 12. The product according to any one of paragraphs. 1-11, wherein the open pressure drop across the smoking article changes to less than about 8 mmH2O. Art., less than about 6 mm of water. Art. or less than about 5 mm of water. Art. 13. The product according to any one of paragraphs. 1-12, wherein the mouthpiece comprises a hollow tubular member formed from a fibrous tow at the downstream end of the mouthpiece. 14. The product according to any one of paragraphs. 1-13, wherein the capsule is substantially spherical and has a diameter of from about 2.8 mm to about 3.2 mm. 15. The product according to any one of paragraphs. 1-14, wherein the material body has a diameter of from about 19 mm to about 23 mm. 16. The product according to any one of paragraphs. 1-15, wherein the aerosol generating material is wrapped in a wrapper having a permeability of less than 100 Coresta units, less than 80 Coresta units, less than 60 Coresta units, or less than 20 Coresta units. 17. The product according to any one of paragraphs. 1-16, wherein the aerosol generating material comprises reconstituted tobacco material having a density of less than about 700 milligrams per cubic centimeter or reconstituted tobacco material having a density of less than about 600 milligrams per cubic centimeter. 18. The product according to any one of paragraphs. 1-17, wherein the aerosol generating material comprises a tobacco component, wherein the tobacco component comprises tobacco leaf in an amount of from about 10% to about 90% by weight of the tobacco component, and wherein the tobacco leaf has a nicotine content of greater than 1.5% by weight of the leaf tobacco. 19. The article of claim 18, wherein the tobacco leaf comprises at least a portion of said aerosol-forming material in an amount not exceeding about 10% by weight of leaf tobacco, and wherein the tobacco component contains said aerosol-forming material in an amount of from about 10% to about 30% by weight of the tobacco composition. 20. The product according to any one of paragraphs. 1-19, wherein the aerosol generating material comprises an aerosol generating material, and wherein the aerosol generating material comprises at least 5% by weight of the aerosol generating material. 21. The product according to any one of paragraphs. 1-20, in which the mouthpiece contains a cavity having an internal volume of more than 450 mm ³ . 22. The product according to any one of paragraphs. 1-21 containing an outer circumference between 19 mm and approximately 23 mm. 23. A system containing a product according to any one of paragraphs. 1-22 and a non-combustible aerosol supply device for heating the aerosol generating material of the article. 24. The system of claim 23, wherein the non-flammable aerosol delivery device comprises a coil. 25. The system of claim 23 or 24, wherein the non-combustible aerosol delivery device is configured to heat the aerosol-generating substrate of the article to a maximum temperature of at least 200°C. 26. The system of claim 25, wherein the non-flammable aerosol delivery device is configured to heat the aerosol-generating substrate of the article to a temperature of at least about 160°C, or at least about 200°C, or at least about 220°C. , or at least about 240°C or at least about 270°C. 27. The system according to any one of paragraphs. 23-26 dependent on claim 12, in which the hollow tubular member formed from the fibrous tow is wrapped with an overwrap, and in which the outer surface of the overwrap reaches a maximum temperature of less than 42°C during use, or less than 40°C during use, or less than 38°C during use. 28. The system according to any one of paragraphs. 23-27, in which the portion of the mouthpiece in which the capsule is located reaches a temperature of 58 to 70 degrees Celsius during use of the aerosol generating system. 29. The system according to any of the previous paragraphs. 23-28, in which the capsule is destroyed by an external force applied to the mouthpiece, the part of the mouthpiece in which the capsule is located reaches a temperature of more than 58 degrees Celsius during use of the aerosol generating system; the crush strength of the capsule when it is located inside the mouthpiece and before heating the aerosol generating material is from 1500 to 4000 gram-force; and the crushing strength of the capsule when placed inside the mouthpiece and during 30 seconds of use of the aerosol generating system is 1000 to 4000 gram-force.

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