RU2814566C2 - Aerosol delivery system - Google Patents

Abstract

FIELD: tobacco industry.

SUBSTANCE: invention relates to an aerosol delivery system. A non-combustible aerosol delivery system contains a non-combustible aerosol delivery device and a product having aerosol generating material and a mouthpiece located downstream relatively to aerosol generating material, wherein aerosol generating material forms aerosol, when heated with the non-combustible aerosol delivery device; and the mouthpiece contains a capsule, and a mouthpiece part, in which the capsule is located, reaches a temperature from 58 to 70 degrees Centigrade during the use of the aerosol generation system; at the same time, a pressure drop at the mouthpiece is less than 40 mm WG. The non-combustible aerosol delivery system contains a non-combustible aerosol delivery device, a product having aerosol generating material and a mouthpiece located downstream relatively to aerosol generating material, wherein aerosol generating material forms aerosol, when heated with the non-combustible aerosol delivery device; the mouthpiece contains a capsule, which is destructed under the action of an external force applied to the mouthpiece; a mouthpiece part, in which the capsule is located, reaches a temperature of more than 58 degrees Centigrade during the use of the aerosol generation system; crushing strength of the capsule, when it is located inside the mouthpiece and before heating of aerosol generating material, is from 1500 to 4000 gram-force; and crushing strength of the capsule, when it is located inside the mouthpiece and during 30 seconds of the use of the aerosol generation system, is from 1000 to 4000 gram-force; at the same time, a pressure drop at the mouthpiece is less than 40 mm WG.

EFFECT: possibility of passage of sufficient amount of aerosol through a mouthpiece to a user.

36 cl, 9 dwg

Description

Field of technology to which the invention relates

The invention relates to an aerosol delivery system.

State of the art

Some tobacco products produce 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 tobacco industry products typically include mouthpieces through which the aerosol is released into the user's mouth.

Disclosure of the Invention

In accordance with embodiments of the invention, in a first aspect, a non-flammable aerosol delivery system is provided, comprising an article having an aerosol-generating material and a mouthpiece located downstream of the aerosol-generating material, wherein the aerosol-generating material, when heated, forms an aerosol. the mouthpiece contains a capsule, and 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.

In accordance with embodiments of the invention, in a second aspect, a non-flammable aerosol delivery system is provided, comprising an article having an aerosol-generating material and a mouthpiece located downstream of the aerosol-generating material, wherein the aerosol-generating material, when heated, forms an aerosol, the mouthpiece comprising a capsule that can be is destroyed by an external force applied to the mouthpiece, the part of the mouthpiece containing the capsule reaches a temperature of more than 58 degrees Celsius during use of the aerosol generating system, the crushing 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 crush strength of the capsule when located inside the mouthpiece and during 30 seconds of use of the aerosol generating system is from 1000 to 4000 gram-force.

Brief description of drawings

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

FIG. 1a is a cross-sectional side view of an article for use with a non-flammable aerosol delivery device as part of a non-flammable aerosol delivery system, the article including a mouthpiece containing a capsule;

Fig. 1b is a cross-sectional view of the mouthpiece containing the capsule (Fig. 1a);

FIG. 2 is a perspective view of a non-flammable aerosol providing device for generating an aerosol from the aerosol generating material of the article shown in FIGS. 1, 2a and 2b;

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

Fig.4 is a side view of the device (Fig.2), with a partial section;

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

Fig. 6A is a sectional view of a section of the device (Fig. 2);

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

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

Carrying out the invention

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

combustible aerosol delivery systems such as cigarettes, cigarillos, cigars and pipe tobacco or roll-on or stuffed cigarettes (based on tobacco, tobacco derivatives, expanded tobacco, reconstituted tobacco, tobacco substitutes or other smoking material);

non-combustible aerosol delivery systems that release compounds from the aerosol material without combustion of 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-flammable aerosol delivery systems; And

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

According to the present disclosure, a “combustible” aerosol delivery system is a system in which the aerosolizable material included in the aerosol delivery system (or component thereof) is burned or burned to facilitate delivery to the user.

According to the present disclosure, a “non-combustible” aerosol delivery system is a system in which the aerosolizable material included in the aerosol delivery system (or component thereof) is not combusted or burned 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-combustible aerosol delivery system is an electronic cigarette, also known as a vaping device or an electronic nicotine delivery (END) system, although it should be noted that the presence of nicotine in the aerosolized 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 aerosolizable 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 aerosolizable material and a solid aerosolizable material. The solid aerosolizable material may contain, for example, tobacco or a non-tobacco product.

Typically, a non-flammable aerosol delivery system may comprise a non-flammable aerosol delivery device and an article for use with the 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-flammable aerosol delivery system.

In one embodiment, the non-flammable aerosol providing device may include a power source and a controller. The power source may be an electrical power source or an exothermic energy source. In one embodiment, the exothermic energy source includes a carbon substrate onto which energy can be applied to transfer energy in the form of heat to an aerosolized material or heat transfer material located in close proximity to the exothermic energy source. In one embodiment, the article provides an energy source, such as an exothermic energy source, to generate 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 the aerosolized material without heating. For example, the aerosol generating component is capable of generating an aerosol from the material to be aerosolized without applying heat to it, such as through one or more of vibration, mechanical, pressure, 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 physiologically active substances that are odorless. A non-olfactory physiologically active material is a material that is included in an aerosolizable material to achieve a physiological response other than olfactory perception.

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

The one or more functional materials may contain one or more of 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 aerosolizable material or an area for receiving aerosolizable material. In one embodiment, an article for use with a non-flammable aerosol delivery device may comprise a mouthpiece. The aerosol material receiving area may be a storage area for storing the aerosol material. For example, the storage area may be a tank. In one embodiment, the aerosol material receiving area may be separate from or integrated with the aerosol generating area.

An aerosolizable 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 otherwise excited. The aerosolizable material may be in the form of a solid, liquid or gel, for example, which may or may not contain nicotine and/or flavorings. 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 aerosolizable material may, for example, comprise 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 support. The support may, for example, be or contain paper, card, cardboard, construction paper, recovered 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 can modify the aerosol in such a way as to have a physiological or organoleptic effect on the human body. Examples of aerosol modification agents are flavoring agents and sensate agents. A sensation-producing substance produces an organoleptic sensation that can be perceived by the senses, such as a sensation of coolness or a sour taste.

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

Induction heating is a process in which an electrically conductive object is heated by introducing a changing magnetic field into the object. This process is described by Faraday's law of induction and Ohm's law. The induction heater may include an electromagnet and a device for transmitting varying electrical current, such as alternating current, through the electromagnet. When an electromagnet and an 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 object having electrical resistance 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 pantograph.

In one embodiment, the pantograph is configured as a closed circuit. It has been found that when the pantograph is in closed circuit form, the magnetic interaction between the pantograph and the electromagnet used is increased, resulting in greater or improved Joule heating.

Magnetohysteresis heating is a process in which an object made of magnetic material is heated by the penetration of a changing magnetic field into the object. A magnetic material can be thought of as containing many atomic-scale magnets or magnetic dipoles. When a magnetic field penetrates such a material, the magnetic dipoles are oriented along the magnetic field lines. Thus, when a changing magnetic field, such as an alternating magnetic field such as that produced by an electromagnet, penetrates a magnetic material, the orientation of the magnetic dipoles changes with the change in the applied magnetic field. This reorientation of 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 magnetic material can enhance the magnetic field, which allows for increased Joule heating.

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

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

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

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

Each format can be produced with different length mouthpieces. The length of the mouthpiece will be from 30 to 50 mm. The rim paper connects the mouthpiece to the aerosol generating material and will typically be of a length greater than the mouthpiece, for example 3-10 mm longer, such that the rim paper encloses the mouthpiece and overlaps the aerosol generating material, for example, in the form of a rod of material substrate to connect the mouthpiece to the rod.

The products, their aerosol-generating materials and mouthpieces described herein can be made, but are not limited to, in any of the above 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 the article or device in use.

The tow material described herein may comprise a tow of cellulose acetate fiber. The tow can also be made using other fiber spinning materials 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 filament ranging from 2.5 to 15, such as 8.0 to 11.0 denier per thread and general 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 components: ground tobacco, tobacco fiber, cut tobacco, extruded tobacco, tobacco stem, reconstituted tobacco and/or tobacco extract.

As used herein, the terms “flavor” and “flavor” refer to materials that (to the extent permitted by local regulations) may be used to create the desired taste or aroma of 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 tree, Japanese magnolia leaf, 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, lemon oil, orange oil, cassia, cumin, cognac, jasmine, ylang-ylang, sage, fennel, pymento, ginger, anise, coriander, coffee or peppermint oil from any variety of the mint genus (Mentha)), aroma enhancers, blocking bitter receptor site agents, bitter receptor site activators or stimulants, sugars and/or sugar substitutes (e.g., 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 imitation, synthetic or natural ingredients, or mixtures thereof. They may be in any suitable form, such as oil, liquid or powder.

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

FIG. 1a shows a cross-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 is a cross-sectional view along line A-A' of the mouthpiece containing the capsule (Figure 1a);

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

The aerosol generating material 3, when heated, forms an aerosol, for example, in a non-flammable aerosol supply device 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 mouthpiece 2 contains a capsule 11, in this example containing an aerosol modifying agent, and 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 promote the evaporation of the contents of the capsule, for example, an aerosol modifying agent, into the aerosol generated by the system as the aerosol passes through the mouthpiece 2. Heating of the contents of the capsule 11 may take place, for example, before capsule 11 will be destroyed, so once capsule 11 is destroyed, its contents are more easily released into the aerosol passing through mouthpiece 2. Alternatively, the contents of capsule 11 may be heated to this temperature after capsule 11 has been destroyed, again resulting in increased releasing the contents into an aerosol. It has been found that preferably a temperature of the mouthpiece in the range of 58 to 70 degrees Celsius is high enough to allow the contents of the capsule to be released more easily, but low enough so that the outer surface of the portion of the mouthpiece 2 in which the capsule is located does not reach a temperature causing unpleasant sensations when touched by the consumer in such a way that the capsule 11 bursts 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 such 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 leak into the mouthpiece around probe) and was 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. The data is presented for an article when heated using a spiral heating device as described herein with reference to FIGS. 2-6 using a "standard" heating profile and for the same article when heated with the same device using a "" profile. accelerated heating. The "accelerated" heating profile is user selectable and allows higher heating temperatures to be achieved.

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

Table 1.0

Puff number T°C at the capsule location in the spiral heating device with a “standard” heating profile T°C at the capsule location in the spiral heating device with an “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 may be ruptured by external force applied to the mouthpiece 2, for example by a consumer using his fingers or other mechanism to compress the mouthpiece 2. As described above, the portion of the mouthpiece in which the capsule is located is positioned to achieve a temperature higher 58°C when using an aerosol delivery system to generate aerosol. Preferably, the crush strength of the capsule 11 when it is inside the mouthpiece 2 and before heating the aerosol generating material 3 is from 1500 to 4000 gram-force. Preferably, the crush strength of the capsule 11 when it is inside the mouthpiece 2 and during 30 seconds of using the aerosol delivery system to generate the aerosol is from 1000 to 4000 gram-force. Accordingly, although capsule 11 is exposed to temperatures above 58°C, for example between 58°C and 70°C, it is capable of maintaining crush strength within a range that has been found to allow capsule 11 to be easily crushed by a consumer. while providing the user 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 to this, 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 heating the aerosol generating material, is from 2000 to 3500 grams-force or from 2500 to 3500 grams-force. Preferably, the burst strength of the capsule when it is inside the mouthpiece and during 30 seconds of use of the aerosol generation system is from 1500 to 4000 grams-force or from 1750 to 3000 grams-force. In one example, the average burst strength of the capsule when it is inside the mouthpiece and before heating the aerosol generating material is approximately 3175 gram-force, and the average burst 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.

Capsule crush strength testing can be performed 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 metal probe having a diameter of 6 mm and centrally located at the location of the capsule (i.e. 12 mm from the mouthpiece 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 driver in accordance with Health Canada's known high-intensity smoking regimen (puff volume 55 ml, puff duration 2 sec, pause between puffs 30 sec) using standard testing equipment . Three puffs were performed using this tightening mode, and capsule crush strength was measured within 30 seconds of the third puff. The test article was equivalent to article 1 shown in FIGS. 1a and 1b and described in more detail below, except that a hollow tubular element 4 with a diameter of 8 mm was located at the mouth end, formed from two layers of paper glued together, each of which was parallel wrapped with butting seams, and having a total thickness of 300 microns. The capsule was a 3 mm diameter capsule located inside an 8 mm long cellulose acetate tow body having tow characteristics of 9.5Y12,000 and a target 9% triacetin plasticizer.

Referring to FIGS. 1a and 1b, the mouthpiece 2 in this example includes a hollow tubular member 4 and a body of material 6 located upstream of the hollow tubular member 4, in this example adjacent to the hollow member and adjacent to the tubular member 4.

The aerosol modifying agent is provided within the material body 6, in this example encapsulated in a capsule 11, and the first oil-resistant ficelle 7 surrounds the material body 6. In other examples, the aerosol modifying agent may be further provided in other forms, such as material introduced into the material body 6 or applied to a thread, for example, a thread carrying a fragrance or other aerosol modifying agent, which may also be located within the body of the material 6. The body of the material 6 has the shape of a cylinder having a longitudinal axis, and the capsule 11 is embedded in the body of the 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 encapsulating 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 body of material 6, measured perpendicular to the longitudinal axis. A capsule with a largest cross-sectional area 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 of the material 6 removing a significant amount of the aerosol mass passing through the mouthpiece 2. The capsule with the largest cross-sectional area is less than 28% of the cross-sectional area of the section 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 remains sufficient space around the capsule for the aerosol to pass without 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 in this example is 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 body of material 6.

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

Capsule 11 has a core-shell structure. In other words, capsule 11 contains a shell containing a liquid agent, for example, a flavoring agent or other agent, which may be any of the flavoring agents or aerosol modifiers described herein. The capsule shell may be ruptured by the user to release flavor or other agent into the body of material 6. The first ficelle 7' may comprise a protective coating to make the ficelle material substantially impervious to the liquid payload of the capsule 11. Alternatively or in addition, the second ficelle 9 and /or mouthpiece 5 may include a protective coating to make the material of the ficelle and/or mouthpiece substantially impervious to the liquid payload of capsule 11.

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

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

A section of the mouthpiece 2, taken along the line A-A' (Fig. 1a), is shown in Fig. 2b. Figure 1b shows the capsule 11, the body of material 6, the first and second ficelles 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 ficelles 7, 9 and the rim paper 5 are arranged concentrically around the material body 6.

The destructible capsule 11 has a core-shell structure. That is, the encapsulating material or protective material creates a shell around the core that contains the aerosol modifying agent. The structure of the shell prevents migration of the aerosol modifying agent during storage of the article 1, but allows for controlled release of the aerosol modifying agent, also called aerosol modifier, during use.

In some cases, the protective material (also referred to herein as encapsulating material) is brittle. The capsule is crushed or otherwise cracked or destroyed by the user to release the aerosol modifier. Typically, the capsule is destroyed just before heating begins, 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 ruptured by applying pressure to release the core; more specifically, the shell can be ruptured by pressure generated by the user's fingers when the user wants 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 collapse at the temperature reached at the capsule portion 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 retain the liquid core to a temperature of at least about 50-120°C.

In other cases, the capsule releases the core composition when heated, such as when the protective material melts or the capsule swells causing the protective material to rupture.

The total capsule weight 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. 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 (for example, from about 9.8 to about 24.5 N). The crush strength of the capsule can be measured by removing the capsule from the body of material 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 attachment which can be used to crush the capsule against a flat hard surface having a surface similar to the attachment.

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. The capsule diameter may be less than approximately 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 incorporating the capsule into the product described herein.

Preferably, the pressure drop or pressure difference (also called tightening resistance) at the ends of the product, measured as the pressure drop in the open state (that is, with the vents open), is reduced by less than 8 mmH2O. Art. upon destruction of the capsule. 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 the average of at least 80 products with the same design. Such small changes in pressure drop 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 consumer decides to destroy 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 cellulosic 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 protective material is sodium alginate and/or calcium alginate. Suitable cellulose 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, tragacanth gum, karaya, locust bean, acacia gum, guar, quince seeds 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 barrier material may contain a coloring agent that facilitates positioning of the capsule within the aerosol generating device during manufacturing 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 glycerin, sorbitol, maltitol, triacetin, polyethylene glycol, propylene glycol or other polyhydric alcohol with plasticizing properties, and, if necessary, one acid of a monobasic, dibasic or tribasic type, especially citric acid, fumaric acid, malic acid and the like. The amount of plasticizer is from 1% to 30% by weight, preferably from 2% to 15% by weight, and even more preferably from 3 to 10% by weight, based on the total weight of the dry shell.

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 methylcellulose (HPMC), hydroxypropylcellulose (HPC), methylcellulose (MC), carboxymethylcellulose (CMC) , polyvinyl alcohol, polyols or mixtures thereof. Dextrin is the preferred filler. The amount of filler in the shell is not more than 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 shell.

The capsule shell may further comprise a hydrophobic outer layer which reduces the capsule's susceptibility to degradation by moisture. The hydrophobic outer layer is preferably selected from the group consisting of waxes, especially carnauba wax, candelilla wax or beeswax, carbowax, shellac (in alcoholic or aqueous solution), ethylcellulose, hydroxypropylmethylcellulose, hydroxylpropylcellulose, latex composition, polyvinyl alcohol, or combinations thereof. More preferably, the at least one moisture barrier agent is ethylcellulose or a mixture of ethylcellulose and shellac.

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

The flavoring may preferably be licorice oil, rose oil, vanilla, lemon oil, orange oil, peppermint flavoring, preferably menthol and/or peppermint 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 flavor 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% by weight flavoring or 50% by weight flavoring.

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

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

In some cases, the consumable material contains at least about 7 mg of aerosol modifier, preferably at least about 8 mg of aerosol modifier, 10 mg of aerosol modifier, 12 mg of aerosol modifier, or 15 mg of 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 a flavoring agent, the solvent may preferably contain short- and medium-chain fats and oils. For example, the solvent may contain glycerol triesters 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 numbers 73398-61-5, 65381-09-1, 85409-09-2. These medium chain triglycerides are odorless and tasteless.

The hydrophilic-lipophilic balance (HLB) of the solvent may be in the range of 9 to 13, preferably 10 to 12. Methods for preparing capsules include co-extrusion, optionally followed by centrifugation and curing and/or drying. The contents of WO 2007/010407 A2 are incorporated herein in their entirety by reference.

The aerosol generating material 3, also referred to herein as the aerosol generating substrate 3, contains: at least one aerosol generating 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 can improve the organoleptic characteristics of the product by assisting in the transfer of compounds, such as aromatic compounds, from the aerosol-generating material to the consumer. However, a problem with adding such aerosol-forming materials to the aerosol-generating material in an article for use in a non-flammable aerosol delivery system may be that when the aerosol-forming material becomes an aerosol when heated, it may increase the mass of the aerosol that is delivered by the article, and this increased the mass can maintain a higher temperature as it passes through the mouthpiece. As the aerosol passes through the mouthpiece, it transfers heat into the mouthpiece, 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 portion of the mouthpiece that comes into contact with the user's lips is typically a paper tube that is either hollow or encloses a cylindrical body of filter material.

As shown in FIG. 1a, the mouthpiece 2 of the article 1 includes 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 there is a mouthpiece 2 has a hollow tubular element 4 formed from a fiber 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 that comes into contact with the consumer's mouth when the product 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 believed that this is due to the tubular member 4 directing the aerosol closer to the center of the mouthpiece 2 and, therefore, reducing the heat transfer from the aerosol to the outer surface of the mouthpiece 2.

The material body 6 and the hollow tubular element 4 individually form a generally cylindrical overall outer shape and have a common longitudinal axis. The body of material 6 is wrapped by a first ficelle 7. Preferably, the first ficelle 7 has a basis weight of less than 50 ^gsm , more preferably from about 20 ^gsm to 40 ^gsm . Preferably, the first ficelle 7 has a thickness of 30 to 60 μm, more preferably 35 to 45 μm. Preferably, the first ficelle 7 is a non-porous ficelle, for example having a permeability of less than 100 Coresta units, for example less than 50 Coresta units. However, in other embodiments, the first ficelle 7 may be a porous ficelle, for example having a permeability greater than 200 Coresta units.

In this example, product 1 has an outer circumference of approximately 21 mm (that is, the product has a medium-thin format). In other examples, the product may be provided in any of the formats described herein, for example, with an outer circumference of 15 mm to 25 mm. Since the article must be heated to release the aerosol, increased heating efficiency can be achieved by using articles having a smaller outer circumference in this range, for example, a circumference of less than 23 mm. 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. Products having a circumference of 19 mm to 23 mm, and more preferably 20 mm to 22 mm, have been found to provide a good balance between providing efficient aerosol delivery and providing efficient heating.

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 tipping paper 5 is wrapped over the entire length of the mouthpiece 2 and over a portion of the aerosol generating material rod 3, and has adhesive on its inner surface to connect the mouthpiece 2 and the rod 3. In this example, the tipping paper 5 extends 5 mm above the aerosol generating material rod 3, but alternatively it may extend 3-10 mm above the shaft 3 or more preferably 4-6 mm to provide a secure connection between the mouthpiece 2 and the shaft 3. The tipping paper 5 may have a base weight that is higher than the base weight of the ficella used in product 1, for example, the base weight is from 40 g to 80 g, more preferably between 50 g and 70 g and in this example 58 g/m ² . It has been found that these base weight ranges result in lining paper having acceptable tensile strength while being flexible enough to wrap around the article 1 and adhere along the longitudinal overlap seam of 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, using a caliper. The wall thickness is preferably greater than 0.9 mm and more preferably 1.0 mm or more. It is preferable that the wall thickness is substantially constant around the entire wall of the hollow tubular element 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 element 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 element 4 is less than about 15 mm. Even more preferably, the length of the hollow tubular element 4 is less than about 10 mm. Additionally or alternatively, the length of the hollow tubular element 4 is at least approximately 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 element 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 member 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 member 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 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 purposes of the present invention, the "density" of the hollow tubular element 4 refers to the density of the fiber tow forming the element with any plasticizer included therein. The density can be determined by dividing the total weight of the hollow tubular element 4 by the total volume of the hollow tubular element 4, wherein the total volume can be calculated using appropriate measurements of the hollow tubular element 4 made, for example, using a caliper. If necessary, the corresponding dimensions can be measured using a microscope.

The tow forming the hollow tubular member 4 preferably has an overall denier of less than 45,000, more preferably less than 42,000. This overall denier has been found to produce a tubular member 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 from 25,000 to 45,000, more preferably from 35,000 to 45,000. Preferably, the cross-sectional shape of the tow fibers is is Y-shaped, although other fiber shapes such as X-shaped may be used in other embodiments.

The fiber tow forming the hollow tubular element 4 preferably has more than 3 denier per thread. It has been found that this thread denier allows for the formation of a tubular member 4 that is not too dense. Preferably, the filament denier is at least 4, more preferably at least 5. In preferred embodiments, the fiber tow forming the hollow tubular element 4 has a filament denier of from 4 to 10, more preferably from 4 to 9. In one example, the fiber tow forming the hollow tubular element 4 has an 8Y40,000 tow formed from cellulose acetate and containing 18% of a plasticizer, for example triacetin.

The hollow tubular element 4 preferably has an inner diameter greater than 3.0 mm. Smaller diameters may cause the aerosol to pass through the mouthpiece 2 into the user's mouth more quickly than desired, such that the aerosol becomes too warm, for example reaching a temperature above 40°C or above 45°C. More preferably, the hollow tubular element 4 has an inner diameter greater than 3.1 mm and even more preferably greater than 3.5 mm or 3.6 mm. In one embodiment, the inner diameter of the hollow tubular element 4 is approximately 3.9 mm. The hollow tubular element 4 preferably contains from 15% to 22% by weight of plasticizer. For cellulose acetate tow, the plasticizer is preferably triacetin, although other plasticizers such as polyethylene glycol (PEG) can be used. More preferably, the tubular member 4 contains from 16% to 20% by weight of plasticizer, for example, about 17%, about 18%, or about 19% plasticizer.

The pressure drop or pressure difference (also called draw resistance) across the mouthpiece, for example, at the ends of the portion of the article 1 located downstream of the aerosol generating material 3, is preferably less than about 40 mmH2O. Art. It has been found that such pressure differences allow a sufficient amount of aerosol, including desired compounds such as aromatic compounds, to pass through the mouthpiece 2 to the consumer. More preferably, the pressure drop across mouthpiece 2 is less than about 32 mmH2O. Art. In some embodiments, a particularly improved aerosol was 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 water. Art. or approximately 27.5 mm water. Art. Alternatively or additionally, the pressure drop across the mouthpiece may be at least 10 mmH2O. Art., preferably at least 15 mm water. Art. and more preferably at least 20 mm of water. Art. In some embodiments, the pressure drop across the mouthpiece may be approximately 15 to 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 body length of the material 6 is less than about 15 mm. More preferably, the length of the body of the material 6 is less than about 10 mm. Additionally or alternatively, the length of the body of the material 6 is at least about 5 mm. Preferably, the body length of the material 6 is at least about 6 mm. In some preferred embodiments, the length of the material body 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 from about 6 mm, 7 mm , 8 mm, 9 mm or 10 mm. In this example, the body length of the material 6 is 10 mm.

In this example, the body of the 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 have, for example, a denier per thread (d.p.f.) of 9.5 and an overall denier of 12,000. In this example, the tow comprises a tow of plasticized cellulose acetate. The plasticizer used in the tow contains approximately 7% by weight of the tow. In this example, the plasticizer is triacetin. In other examples, various materials may be used to form the material body 6. For example, the body of material 6 may be formed from paper, for example similar to paper filters known for use in cigarettes. Alternatively, the material body 6 may be formed from tows other than cellulose acetate, such as polylactic acid (PLA), other materials described herein for tow, or similar materials. The tow is preferably formed from cellulose acetate. The tow formed from cellulose acetate or other materials preferably has a filament denier of at least 5, more preferably at least 6, and even more preferably at least 7. These filament deniers provide a tow that has relatively coarse and thick fibers with less surface area, resulting in a lower pressure drop across tip 2 than tows having lower deniers per filament. Preferably, in order to obtain a sufficiently uniform body of material 6, the tow has a denier per filament of no more than 12 deniers per filament, preferably no more than 11 deniers per filament, and even more preferably no more than 10 deniers per filament.

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. These total denier values provide a tow that occupies a reduced proportion of the cross-sectional area of the die 2, resulting in a lower pressure drop across mouthpiece 2 than for tourniquets having higher total denier values. For proper body hardness of the material 6, the tow preferably has a total denier of at least 8,000 and more preferably at least 10,000. Preferably, the denier per thread is from 5 to 12, while the total denier is from 10,000 to 25,000. More preferably, the denier per thread is 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 may be used in other embodiments per thread and total denier as provided herein.

In this example, the hollow tubular element 4 is a 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 adjacent to it. The material body 6 and the second hollow tubular element 8 each have a generally cylindrical overall outer shape and a common longitudinal axis. The second hollow tubular member 8 is formed from a plurality of layers of paper that are wound in parallel with butt seams to form the tubular member 8. In this example, the two-layer tube has first and second layers of paper, although in other examples 3, 4, or more papers may be used. layers forming 3, 4 or more layer tubes. Other designs may be used, such as spirally 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 member 8 can also be formed using rigid ficelle and/or tipping paper as the second ficelle 9 and/or tipping paper 5 which are described herein, which means that a separate tubular member is not required. The rigid ficella and/or tipping paper are manufactured to have a rigidity sufficient to withstand axial compressive forces and bending moments that may be encountered during the manufacture and use of article 1. For example, the rigid ficella and/or tipping paper may have a density from 70 to 120 g/ ^m2 , more preferably from 80 to 110 g/ ^m2 . In addition or alternatively, the rigid ficella and/or tipping 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 for both the second ficell 9 and the mouthpiece 5 to have values in these ranges to achieve an acceptable overall level of stiffness for the second hollow tubular member 8.

The second hollow tubular element 8 preferably has a wall thickness, which can be measured in the same manner as that of the first hollow tubular element 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 approximately 300 µm. In this example, the second hollow tubular element 8 has a wall thickness of approximately 290 μm.

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 element 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 is located around and forms an air gap inside the mouthpiece 2, which acts as a cooling segment. The air gap forms a chamber through which the heated volatiles generated by the aerosol generating material 3 flow. The second hollow tubular member 8 is hollow to provide a chamber for aerosol accumulation, but is rigid enough to withstand the axial compressive forces and bending moments that may occur. occur during manufacture and use of the 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 allows for the formation of an improved aerosol. This cavity size provides sufficient space within the mouthpiece 2 which allows the heated volatile components to cool, thereby allowing the aerosol generating material 3 to be exposed to higher temperatures than would otherwise be possible, which would result in the formation of an aerosol that is too warm. In this example, the cavity is formed by the second hollow tubular element 8, but in alternative embodiments it may be formed in another part of the mouthpiece 2. More preferably, the mouthpiece 2 includes 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 allows for further improvement of the aerosol. In some examples, the internal cavity contains a volume of from about 550 mm ³ to about 750 mm ³ , such as 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 volatile component entering the first upstream end of the second hollow tubular element 8 and the heated volatile component exiting the second , located downstream 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 upstream the upstream end of the second hollow tubular element 8 and the heated volatilization component exiting the second, downstream end of the second hollow tubular element 8. This temperature difference along the entire length of the second hollow tubular element 8 protects the heat-sensitive material body 6 from the high temperatures of the aerosol-generating material 3 when it heats up.

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

In this example, the first hollow tubular element 4, the body of material 6 and the second hollow tubular element 8 are combined using a second ficell 9, which is wrapped around all three sections. Preferably, the second ficelle 9 has a basis weight of less than 50 ^gsm , more preferably from about 20 ^gsm to 45 ^gsm . Preferably, the second ficelle 9 has a thickness of 30 to 60 μm, more preferably 35 to 45 μm. The second ficelle 9 is preferably a non-porous ficelle having a permeability of less than 100 Coresta units, for example less than 50 Coresta units. However, in alternative embodiments, the second ficelle 9 may be a porous ficelle, for example having a permeability greater 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 wrapper 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. Wraps with low permeability, for example having a permeability of less than 100 Coresta units, more preferably less than 60 Coresta units, have been found to result in improved aerosol generation in the aerosol generating material 3. Without being limited by theory, this is believed to be due to reduced 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 ficelle and filter bonding paper.

In this embodiment, the wrapper 10 contains 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 µm. In this example, the aluminum foil has a paper backing. However, in alternative arrangements, the aluminum foil may have a different thickness, for example from 4 µm to 16 µm. Aluminum foil also does not necessarily have to have a paper backing, but may have a backing formed from other materials, for example, to provide adequate tensile strength to the foil, or it may have no backing material. In addition, metal layers or foils other than aluminum can also be used. The overall thickness of the wrapper is preferably from 20 μm to 60 μm, more preferably from 30 μm to 50 μm, which allows for a wrapper having suitable heat transfer characteristics and structural integrity. The tensile force that may be applied to the wrapper before it breaks may be greater than 3,000 gram-force, such as 3,000 to 10,000 gram-force, or 3,000 to 4,500 gram-force.

The product has a ventilation rate of approximately 75% of the aerosol drawn through the product. 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 to slow the flow of the 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 the product 1. In this example, ventilation is provided in the second hollow tubular element 8, which has been found to be particularly useful in assisting the aerosol generation process. Ventilation occurs through 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 extend through the tipping paper 5, the second ficell 9 and a second hollow tubular element 8. In alternative embodiments, ventilation may be provided in the mouthpiece at other locations, for example, in the material body 6 or the first tubular element 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-generating material contains less than 25% by weight of 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 configured as a cylindrical rod of aerosol generating material. Regardless of the shape of the aerosol generating material, it preferably has a length of from about 10 mm to 100 mm. In some embodiments, the length of the aerosol generating material is preferably in the range from about 25 mm to 50 mm, more preferably in the range from about 30 mm to 45 mm, and even more preferably from about 30 mm to 40 mm.

The volume of aerosol generating material 3 provided may 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 a superior aerosol having greater attractiveness and sensory characteristics compared to volumes selected at the lower end of the range.

The mass of the aerosol generating material 3 provided may be greater than 200 mg, for example 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 larger mass of aerosol-generating material results in superior organoleptic characteristics compared to aerosol generated from a smaller 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 comprise sheet tobacco, extruded tobacco and/or strip cast tobacco.

Aerosol generating material 3 comprises reconstituted tobacco material having a density of less than about 700 milligrams per cubic centimeter (mg/cm ³ ). Such tobacco material has been found to be particularly effective in providing an aerosol-generating material that can be rapidly heated to release an aerosol, compared to denser materials. For example, the inventors have tested the heating properties of various aerosol-generating materials, such as strip cast reconstituted tobacco material and paper reconstituted tobacco material. It has been found that for any given aerosol-generating material there is a specific zero heat flow temperature below which the useful heat flow is endothermic, in other words, more heat enters the material than leaves the material, and above which the useful heat flow 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 through aerosol generation, the lower zero temperature of the heat flux has a beneficial effect on the time required for the aerosol to first be released from the aerosol-generating material. For example, aerosol generating materials having a density 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 greater than 700 mg/cm ³ which have a zero heat flux temperature above 164° C.

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

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 reconstituted tobacco material having a density of at least 350 mg/cm ³ which is believed to provide sufficient thermal conductivity of the material.

The tobacco material may be in the form of cut tobacco. The cut tobacco may have a cutting width of at least 15 cuts per inch (approximately 5.9 cuts per cm, equivalent to a cut width of approximately 1.7 mm). Preferably, the cut tobacco has a cutting 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 a width of the cut part of approximately 1.27 mm). In one example, the cut tobacco has a cutting width of 22 cuts per inch (approximately 8.7 cuts per cm, equivalent to a cut width of approximately 1.15 mm). Preferably, the cut tobacco has a cutting width of 40 cuts per inch or less (approximately 15.7 cuts per cm, equivalent to a cut width of approximately 0.64 mm). It has been found that a cut width of 0.5 mm to 2.0 mm, for example 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: paper reconstituted tobacco, sheet tobacco, extruded tobacco and strip 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 filler component is typically a non-tobacco component, that is, a component that does not include ingredients derived from tobacco. 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 silica, magnesium oxide, magnesium sulfate and magnesium carbonate. The filler component may also be a non-tobacco cast material or a non-tobacco extruded material. The filler component may be present in an amount of from 0 to 20% by weight of the tobacco material or in an amount of from 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 aerosol generation by promoting the initial vaporization and/or condensation of gas into a respirable solid and/or liquid aerosol. In some embodiments, the aerosol-generating material can improve the delivery of flavor additive 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: 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 methyl stearate, dimethyl dodecanedioate and dimethyl tetradecanedioate. 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, for example, any tobacco component, tobacco material and/or filler component, if present. Alternatively or additionally, the aerosol-forming material may be added separately to the tobacco material. In any case, the total amount of aerosol-forming material in the tobacco material may be as defined herein.

The tobacco material may comprise 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. To achieve an overall level of aerosol-forming material of 10% to 20% by weight of the tobacco material, it has been advantageously found that it can be added at higher weight 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 can 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 greater than 1.5% by weight of the tobacco leaf. Advantageously, it has been found that using a tobacco leaf with a nicotine content greater than 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 nicotine level, but with better organoleptic characteristics than using only one paper reconstituted tobacco. Tobacco leaf, for example cut tobacco, may have, for example, a nicotine content of 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 flavoring agents described herein. In one embodiment, the tobacco material contains menthol, forming a menthol product. The tobacco material may contain from 3 to 20 mg menthol, preferably from 5 to 18 mg and more preferably from 8 to 16 mg menthol. In this example, the tobacco material contains 16 mg of menthol. The tobacco material may contain from 2% to 8% by weight menthol, preferably from 3% to 7% by weight menthol, and more preferably from 4% to 5.5% by weight menthol. In one embodiment, the tobacco material includes 4.7% by weight menthol. Such high levels of menthol concentration can be achieved using a high percentage of reconstituted tobacco material, for example, more 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 that 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 expressed as % by weight (wt.%), for the avoidance of doubt, this refers to the basis in terms of dry weight, unless specifically stated otherwise. Thus, any water that may be present in the tobacco material or any component thereof is completely ignored when determining weight percentages. The water content of the tobacco material described herein may vary and may range, for example, from 5 to 15% by weight. The water content of the tobacco material described herein may vary depending, for example, on the 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 the 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 filler 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 component or filler component, but is included into the weight of "aerosol-forming material" in weight percent as defined herein. 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 (for example, 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 from 10% to 100% by weight of the tobacco component. In embodiments of the present invention, the paper reconstituted tobacco is present in an amount of from 10% to 80% by weight or from 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, leaf tobacco 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, leaf tobacco 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, strip cast reconstituted tobacco, or a combination of strip cast reconstituted tobacco and another form of tobacco, such as tobacco granules.

Paper reconstituted tobacco refers to tobacco material produced by the process of extracting raw tobacco with a solvent, resulting in an extract of solubles and a residue containing fibrous material, then the resulting extract (usually after thickening and, if required, after further processing) is recombined with the fibrous material from the residue (usually after refining the fibrous material and possibly after adding some non-tobacco fibers) by depositing the extract onto 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 produced 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 raw materials consisting of tobacco strips and/or whole leaf tobacco and tobacco stems. However, in other embodiments, trimmings, dust, and hangings 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 preparing paper reconstituted tobacco.

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

In some examples, the mouthpiece 2 located downstream of the aerosol-generating material 3 may comprise a wrapper, such as a first or second ficell 7, 9 or tipping paper 5, that contains an aerosol-modifying agent as described herein, or other material causing Feel. The aerosol modifying agent may be located on the inward or outward facing surface of the mouthpiece wrapper. For example, an aerosol modifying agent or other sensation-inducing material may be provided on an area of the wrapper, for example, on the outward facing surface of the tipping paper 5 that contacts the lips of the consumer during use. By placing the aerosol-modifying agent or other sensation-producing material on the outward-facing surface of the mouthpiece wrapper, the aerosol-modifying agent or other sensation-producing material can be transferred to the user's lips during use. Transferring an aerosol-modifying agent or other sensory material to the consumer's lips during use of the product 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 or other sensation-producing material may impart a flavor to the aerosol-generating substrate 3. The aerosol-modifying agent or other sensation-producing material may be at least partially dissolved in water such that it is transferred to the user through the user's saliva. The aerosol modifying agent or other sensation-producing material may be volatilized by the heat generated by the aerosol delivery system. This may facilitate transfer of the aerosol modifying agent into 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-flammable aerosol providing device is used to heat the aerosol generating material 3 of the articles 1 described herein. The non-flammable aerosol providing 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, when 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 heating of the aerosol generating material.

In some examples, the coil is configured, when in use, to generate a varying magnetic field to penetrate the at least one heating element to thereby cause induction heating and/or magnetohysteresis heating of the 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 the at least one electrically conductive heating element to thereby cause induction heating of the at least one electrically conductive heating element may be referred to as an "induction coil" or "induction coil". 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 be positioned relative to the coil in such a manner as to provide such heating of 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, wherein 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 one or more heating elements of each device and article to heat if when the product is in a 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 that 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 an electrically conductive heating element that at least partially surrounds a heating zone, and the coil is a helical coil that surrounds at least a portion of the electrically conductive heating element. In some examples, the electrically conductive heating element is tubular. In some examples, the coil is an inductor.

In some examples, the use of a coil allows the non-flammable aerosol delivery device to reach operating temperature faster than an aerosol delivery device without a coil. For example, a non-flammable aerosol delivery device including a coil as described above can reach an operating temperature at which the first puff can be completed in less than 30 seconds from the start of the device's heating program, more preferably in less than 25 seconds. In some examples, the device may reach operating temperature in approximately 20 seconds after starting the device's heating program.

It has been found that using a coil as described herein in an apparatus for heating an aerosol-generating material accelerates the generation of the aerosol. For example, consumers report that the aerosol generated by a device including a coil as described herein feels closer to the aerosol generated in manufactured cigarettes (FMCs) than the aerosol produced by other non-combustible aerosol delivery systems. Without wishing to be bound by theory, it is believed that this occurs as a result of the reduced time to reach the required heating temperature when using a coil, the higher heating temperatures achieved when using a coil, and/or as a result of the fact that the coil allows such systems to simultaneously heat a relatively large volume of aerosol-generating material, resulting in an aerosol temperature similar to that of an FMC aerosol. In FMC products, burning coal generates a hot aerosol, which heats the tobacco in the tobacco rod behind the coal as the aerosol is drawn through the rod. This hot aerosol is purported to release aromatic compounds from the tobacco in the rod behind the burning coal. 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, thereby producing 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 specific characteristics believed to be more similar to those of an FMC product. For example, by heating an aerosol generating material including 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 over 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 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 aerosol density is at least 0.1 μg/cm ³ .

In some cases, 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 over the period. In some cases, less than about 200 μg, preferably less than about 150 μg, or less than about 125 μg of nicotine is aerosolized from the aerosol-generating material at an air flow of at least 1.50 L/m per 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 per period. The 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, the components suspended in the gas). If an aerosol contains suspended liquid droplets and suspended solid particles, 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 aerosol density is at least 0.2 μg/cm ³ , 0.3 μg/cm ³ or 0.4 μg/cm ³ . In some cases, 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-flammable aerosol providing 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-flammable aerosol providing 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 approximately 270ºC, at least once during the heating process followed by the device for providing aerosol in the absence of combustion.

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 from an aerosol generating material in the article 1 as described herein, which has a higher temperature when the aerosol exits the mouthpiece end of the mouthpiece 2 than previous aerosol generating devices, which is considered to be closer to the FMC product. For example, the maximum temperature of the aerosol measured at the mouthpiece of the article 1 may preferably be greater than 50°C, more preferably greater than 55°C, and even more preferably greater than 56°C or 57°C. Additionally or alternatively, the maximum temperature of the aerosol measured at 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 maximum temperature of the aerosol measured at the mouthpiece of the article 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-flammable aerosol providing device 100 for generating an aerosol from an aerosol generating medium/aerosol generating material such as the aerosol generating material 3 of the products 1 described herein. In general, device 100 can be used to heat a removable article 110 containing an aerosol-generating medium, such as the articles 1 described herein, to generate an aerosol or other respirable medium that is inhaled by the user of the device 100. The device 100 and the removable article 110 together form system.

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

In this example, device 100 includes a first end member 106 that includes a cap 108 that is movable relative to the first end member 106 to close the opening 104 when 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 arrow "B".

The device 100 may also include a user-actuable control 112, such as a button or switch, that 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 may receive a cable for charging the battery of the device 100. For example, the connector 114 may be a charging port, such as a USB charging port.

FIG. 3 shows the device 100 shown in FIG. 2 with the outer shell 102 removed and the product 110 removed. The device 100 defines the longitudinal axis 134.

As shown in FIG. 3, a first end member 106 is located at one end of the device 100, and a second end member 116 is located at the opposite end of the device 100. The first and second end members 106, 116 together at least partially define 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 define a portion of end surfaces. In this example, the cap 108 also forms a portion of the top surface of the device 100.

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

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

The device 100 further includes a power source 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 rechargeable 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 assembly to supply electrical power when needed and under the control of a controller (not shown) to heat the aerosol generating material. In this example, the battery is attached to a central support 120, which holds the battery 118 in place.

The device further includes at least one electronic module 122. 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 paths for electrically connecting together various electronic components of device 100. For example, battery terminals may be electrically connected to circuit board 122 such that power can be provided to the entire device 100. Receptacle 114 may also be electrically connected to the battery through 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 the process of heating an electrically conductive object (for example, a pantograph) through electromagnetic induction. An induction heating assembly may include an inductive element, such as one or more inductors, and a device for transmitting a varying electrical current, such as alternating electrical current, through the inductive element. A changing electric current in an inductive element creates a changing magnetic field. The changing magnetic field penetrates a pantograph suitably positioned relative to the inductive element and generates eddy currents within the pantograph. The pantograph has electrical resistance to eddy currents, and hence the flow of eddy currents through the pantograph having resistance results in heating of the pantograph due to Joule heating. In cases where the pantograph contains ferromagnetic material such as iron, nickel or cobalt, heat may also be generated by magnetic hysteresis losses in the pantograph, that is, by the changing orientation of 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 pantograph, 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 heating assembly of the 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 electrically conductive material. In this example, the first and second inductors 124, 126 are made of Litz wire/cable wound in a spiral to form helical inductors 124, 126. Litz wire contains a number of individual wires that are insulated and twisted together to 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 different cross-section shape, such as circular.

The first inductor 124 is configured to generate a first varying magnetic field to heat the first section of the pantograph 132, and the second inductor 126 is configured to generate a second varying magnetic field to heat the second section of the pantograph 132. In this case, for example, the first inductor 124 is located adjacent the second inductor 126 in the direction along the longitudinal axis 134 of the device 100 (that is, 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 inductors 124, 126 may, in some examples, 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 value 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 on a smaller portion of the pantograph 132 than the second inductor 126. Thus, the first inductor 124 may contain a different number of turns than the second inductor 126 (as long as the spacing between the individual turns is substantially the same). In yet another example, the first inductor 124 may be made of a different material than 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 operate to heat the first section/area of the article 110, and later the second inductor 126 may act to heat the second section/area of the article 110. Winding the coils in opposite directions allows the current to be reduced, induced in an inactive coil when used in conjunction with a certain type of control circuit. In FIG. 3, the first inductor 124 is a right-handed coil, and the second inductor 126 is a left-handed coil. However, in another embodiment, the inductors 124, 126 may be wound in one direction, or the first inductor 124 may be a left-hand wound helix and the second inductor 126 may be a right-hand wound helix.

In this example, the current collector 132 is hollow and thus forms a container into which the aerosol-generating material is placed. For example, article 110 may be inserted into pantograph 132. In this example, pantograph 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 carbon steel coated with nickel or cobalt.

In some examples, pantograph 132 may comprise at least two materials capable of being heated at two different frequencies to selectively aerosolize the at least two materials. For example, the first section of pantograph 132 that is heated by the first inductor 124 may contain a first material, and the second section of pantograph 132 that is heated by the second inductor 126 may contain a second different material. In another example, the first section may contain first and second materials, wherein 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 adjacent along an axis defined by pantograph 132, or may form different layers within pantograph 132. Likewise, the second section may contain third and fourth materials, and the third and fourth materials may be heated differently depending on the operation of the second section. inductor coils 126. The third and fourth materials may be adjacent along an axis defined by pantograph 132, or may form different layers within pantograph 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 includes an insulating element 128, which may be generally tubular and at least partially surround the current collector 132. The insulating element 128 can be made of any insulating material, such as plastic. In this particular example, the insulating element is made of polyetheretherketone (PEEK). The insulating element 128 allows the various components of the device 100 to be isolated 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 inductor coils 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 inductive 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 element 128 and the inner surface of the first and second inductors 124, 126.

In a specific example, the pantograph 132, the insulating element 128, and the first and second inductors 124, 126 are aligned around the central longitudinal axis of the pantograph 132.

FIG. 4 is a partial cross-sectional side view of device 100. In this example, the outer shell 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 one end of the pantograph 132 to hold the pantograph 132 in place. The support 136 is connected to the second end member 116.

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

The device 100 further includes a second cap/cover 140 and a spring 142 located toward the distal end of the device 100. The spring 142 allows the second cover 140 to be opened to provide access to the pantograph 132. The user can open the second cover 140 to clean the pantograph 132 and/or support 136.

The device 100 further includes an expansion chamber 144 that extends from the proximal end of the pantograph 132 to the opening 104 of the device. Located at least partially within the expansion chamber 144 is a retaining clip 146 that abuts and holds the article 110 during insertion into the device 100. The expansion chamber 144 is connected to the end member 106.

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

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

6B shows that the outer surface of the pantograph 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 pantograph 132. In one specific example, the distance 150 is approximately 3 to 4 mm, approximately 3-3.5 mm or approximately 3.25 mm.

6B also shows that the outer surface of the insulating element 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 pantograph 132. In one particular case, for example, the distance 152 is approximately 0. 05 mm. In another example, the distance 152 is substantially 0 mm such that the inductors 124, 126 are adjacent to and touching the insulating element 128.

In one example, the pantograph 132 has a wall thickness 154 of about 0.025 mm to 1 mm, or about 0.05 mm.

In one example, pantograph 132 has a length of about 40 to 60 mm, about 40 to 45 mm, or about 44.5 mm.

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

During use, the articles 1 described herein may be inserted into a non-flammable 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-flammable aerosol supply device 100 and can be placed in the user's mouth. The aerosol is produced by heating the aerosol generating material 3 using the device 100. The aerosol produced by the aerosol generating material 3 passes through the mouthpiece 2 into the mouth of the user.

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 surprisingly been found that the first tubular member 4 formed from the fiber tow has a significant influence on the temperature of the outer surface of the mouthpiece 2 of the products 1. For example, in the case where the hollow tubular member 4 formed from the fiber tow is wrapped with an outer wrapper, for example, the tipping paper 5, it has been found that the outer surface of the outer wrapper in a longitudinal position corresponding to the position of the hollow tubular element 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 temperature of the outer surface of the article 1 described herein with reference to FIGS. 1a and 1b when heated using the device 100 described herein with reference to FIGS. 2-6. The first, second and third temperature probes were used, respectively, at first, second and third positions along the mouthpiece 2 of the product 1. The first position (indicated in table 2.0 as position 1) was located at a distance of 4 mm from the downstream end 2b of the mouthpiece 2, the second position (designated in Table 2.0 as position 2) was 8 mm from the downstream end 2b of the mouthpiece 2, and the third position (designated in Table 2.0 as position 3) was 12 mm from the downstream end 2b of the mouthpiece 2. end 2b of mouthpiece 2.

Thus, the first position was on the outer surface of the portion 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 portion of the mouthpiece 2 in which the body of material 6 is located.

The control product was tested for comparison with the tubular fiber tow members 4 described herein, and instead of the tubular fiber tow member 4, a known spiral wound paper tube having the same structure as the second hollow tubular member 8 described herein 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 usually reached its 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 smoking regimen (55 mL puff volume, 2 sec puff duration, 30 sec pause between puffs) was used using standard testing equipment.

As shown in the table below, it was unexpectedly found that the use of a tubular member 4 formed from a fiber tow reduced the temperature of the outer surface of the mouthpiece 2 compared to the control article at each puff and at each test position on the mouthpiece 2. Tubular member 4 formed fiber tow, is especially effective in reducing the temperature in the first probe position, where the user's lips will be located when using product 1. In particular, the temperature of the outer surface of the mouthpiece 2 in the first probe position decreased by more than 7 ° C in the first three puffs and more than by 5°C on the fourth and fifth puffs.

Table 2.0

Probe position Consumable 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 Harness 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 Harness 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 Harness tubular element 4 45.43 47.73 47.64 47.72 47.36

FIG. 7 shows a method for making an article for use in a non-flammable aerosol delivery system. In step S101, the first and second aerosol-generating material portions, each containing an aerosol-generating material, are positioned adjacent the respective first and second longitudinal ends of the mouthpiece shaft, the mouthpiece shaft comprising a hollow tubular member shaft formed from a fiber tow disposed between the first and second ends. . In this example, the core of the hollow tubular element comprises a first double-length hollow tubular element 4 positioned between the first and second corresponding bodies of material 6. A corresponding second tubular element 8 is positioned at the outer end of each body of material 6 and is adjacent to the outer ends of these second tubular elements 8 on which the first and second sections of the aerosol-generating material are positioned. The mouthpiece shaft 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 accomplished by wrapping tipping paper 5, as described herein, around the mouthpiece shaft and at least a portion of each of the portions of the aerosol generating material 3. In this example, tipping paper 5 extends approximately 5 mm in the longitudinal direction over the outer surface of each area of aerosol-generating material 3.

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

The various embodiments described herein are presented only to facilitate understanding and study of the claimed features. These embodiments are presented only as a representative sample of embodiments and are not exhaustive and/or exclusive. It should be noted that the benefits, embodiments, examples, functions, features, structures and/or other aspects described herein are not to be construed as limiting the scope of the invention as defined by the claims or limiting 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 suitably contain, consist of, or constitute substantially suitable combinations of disclosed elements, components, features, parts, steps, means, etc., other than those specifically described herein. In addition, the present disclosure may include other inventions not presently claimed but which may be claimed in the future.

Claims (45)

1. A non-flammable aerosol supply system, comprising a non-flammable aerosol supply device and an article having an aerosol generating material and a mouthpiece located downstream of the aerosol generating material, wherein: the aerosol generating material generates an aerosol when heated by the non-flammable aerosol providing device; And the mouthpiece contains a capsule, and 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; in this case, the pressure drop across the mouthpiece is less than 40 mm water column. 2. A non-flammable aerosol delivery system comprising a non-flammable aerosol supply device, an article having an aerosol generating material and a mouthpiece located downstream of the aerosol generating material, wherein: the aerosol generating material generates an aerosol when heated by the non-flammable aerosol providing device; the mouthpiece contains a capsule that is destroyed under the action of 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 positioned within the mouthpiece and before heating the aerosol-generating material is 1500 to 4000 gram-force; And the crush strength of the capsule when positioned within the mouthpiece and during 30 seconds of use of the aerosol generating system is 1000 to 4000 gram-force; in this case, the pressure drop across the mouthpiece is less than 40 mm of water. Art. 3. The system of claim 2, wherein the crush strength of the capsule when positioned within the mouthpiece and before heating the aerosol generating material is from 2000 to 3500 gram-force or from 2500 to 3500 gram-force. 4. The system of claim 2 or 3, wherein the crush strength of the capsule when positioned within the mouthpiece and during 30 seconds of use of the aerosol generating system is from 1500 to 4000 gram-force or from 1750 to 3000 gram-force. 5. System according to any one of claims 1-4, in which the capsule contains an aerosol modifying agent. 6. The system according to any one of claims 1 to 5, in which the mouthpiece contains a body of material in the form of a cylinder having a longitudinal axis, and the capsule is embedded in the body of material so that the capsule is surrounded on all sides by the material forming the body. 7. The system of claim 6, wherein the capsule has a shell encapsulating the liquid aerosol modifying agent and 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 body of the material, measured perpendicular to the longitudinal axis. 8. The system according to claim 6 or 7, in which the body of the material is made of a fiber tow. 9. The system of claim 8, wherein the body of the material is made of a fiber tow having a thread denier of 5 to 12 and a total denier of 8,000 to 30,000. 10. The system according to claim 8 or 9, wherein the body of the material is made of a fiber tow having a thread denier of 6 to 10 and a total denier of 10,000 to 25,000. 11. The system according to claims 8, 9 or 10, in which the body of the material is made of a fiber tow having a thread denier of 7 to 10 and a total denier of 11,000 to 22,000. 12. System according to any one of claims 8 to 11, wherein the fiber tow comprises a cellulose acetate tow. 13. System according to any one of claims 6 to 12, in which the body of the material has an outer circumference of from 19 mm to 23 mm. 14. The system according to any one of claims 1-13, in which the pressure drop across the mouthpiece is more than 15 mm water column. 15. The system according to any one of claims 1-14, in which the pressure drop in the open state across the product changes to less than 8 mm water column, less than 6 mm water column. or less than 5 mm water column. 16. The system according to any one of claims 1 to 15, wherein the mouthpiece includes a hollow tubular element made of a fiber tow at the downstream end of the mouthpiece. 17. The system according to any one of claims 1 to 16, wherein the capsule is spherical and has a diameter of from 2.8 mm to 3.2 mm. 18. The system according to any one of claims 1 to 17, wherein the aerosol generating material comprises an aerosol generating material. 19. The system of claim 18, wherein the aerosol-generating material comprises at least 5% by weight of an aerosol-generating material or at least 10% by weight of an aerosol-generating material. 20. The system of claim 18 or 19, wherein the aerosol-forming material contains at least one material selected from glycerol, glycerol, propylene glycol, a combination of glycerol and propylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, 1,3-butylene glycol, erythritol, mesoerythritol, ethyl vanillate, ethyl laurate, diethyl suberate, triethyl citrate, triacetin, a mixture of diacetin, benzyl benzoate, benzyl phenylacetate, tributyrine, lauryl acetate, lauric acid, myristic acid, propylene carbonate and combinations thereof. 21. The system according to any one of claims 1 to 20, wherein the non-flammable aerosol providing device is configured to heat the aerosol generating material to a maximum temperature of at least 160°C, or at least 200°C, or at least 220° C, or at least 240°C. 22. The system of claim 21, wherein the non-flammable aerosol providing device is configured to heat the aerosol generating material to a maximum temperature of at least 270°C. 23. The system of claim 21 or 22, wherein the non-flammable aerosol providing device comprises a coil. 24. The system of claim 23, comprising at least one electrically conductive heating element for heating the aerosol generating material, and wherein the coil, during use, is configured to cause heating of the at least one electrically conductive heating element. 25. The system according to claim 23 or 24, wherein the coil includes an induction coil. 26. The system according to any one of claims 1-25, in which the product has a pressure drop in the closed state of 150 mm water column. up to 300 mm water column, or from 150 mm water column. up to 220 mm water column, or from 150 mm water column. up to 200 mm water column 27. The system according to any one of claims 1 to 26, wherein the aerosol generating material has the shape of a cylindrical rod with a length of 10 mm to 100 mm or the shape of a cylindrical rod with a length of 10 mm to 15 mm or 15 mm to 100 mm. 28. The system according to any one of claims 1 to 27, wherein the aerosol generating material contains more than 5 mg or more than 7 mg of an aerosol modifying agent. 29. The system according to any one of claims 1 to 28, wherein the aerosol generating material contains more than 5 mg or more than 7 mg of menthol. 30. The system according to any one of claims 1 to 29, 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. 31. The system according to any one of claims 1 to 30, wherein the aerosol generating material comprises reconstituted tobacco material having a density of less than 700 milligrams per cubic centimeter, or reconstituted tobacco material having a density of less than 600 milligrams per cubic centimeter. 32. The system according to any one of claims 1 to 31, wherein the aerosol generating material contains a tobacco component, wherein the tobacco component contains leaf tobacco in an amount of from 10% to 90% by weight of the tobacco component, and wherein the leaf tobacco has a nicotine content of more than 1, 5% by weight of leaf tobacco. 33. The system of claim 32, wherein the tobacco leaf contains at least a portion of said aerosol-generating material in an amount not exceeding 10% by weight of the tobacco leaf, and wherein the tobacco component contains said aerosol-generating material in an amount of from 10% to 30% by weight of the tobacco composition. 34. The system according to any one of claims 1 to 33, in which the mouthpiece contains a cavity having an internal volume of more than 450 mm ³ . 35. The system according to any one of claims 1 to 34, in which the outer surface of the mouthpiece in a longitudinal position corresponding to the location of the capsule reaches a maximum temperature of less than 55°C or less than 50°C during use. 36. The system according to any one of claims 1 to 35, in the case of their dependence on claim 16, in which the outer surface of the mouthpiece in a longitudinal position corresponding to the location of the hollow tubular element reaches, during use, a maximum temperature of less than 42°C, or less 40°C or less than 38°C.