RU2817011C2 - Article for use in a non-burning aerosol delivery system - Google Patents

Abstract

FIELD: aerosol delivery systems.

SUBSTANCE: invention relates to an article for use in a flameless aerosol delivery system and to a flameless aerosol delivery system with such article. An article for use in a non-burning aerosol delivery system comprises an aerosol-forming material and a mouthpiece connected to it. The mouthpiece is the part of the article located downstream in relation to the aerosol forming material. The pressure drop across the mouthpiece is at least 10 mm of water, but less than 32 mm of water.

EFFECT: ensuring passage through the mouthpiece to the consumer of a sufficient amount of aerosol, including desirable compounds, such as aromatic compounds.

29 cl, 10 dwg

Description

Field of technology to which the invention relates

The invention relates to an article for use in a combustion-free aerosol supply system and to a combustion-free aerosol supply system with such an article.

Patent document US 2018/0007974 discloses an article capable of generating an aerosol that can be used with an electrically controlled aerosol generating device. The article includes a first and a second volatile liquid substrate, each contained in a frangible capsule.

Patent document US 2019/045838 discloses a smoking article comprising a tobacco rod and a filter axially aligned with the tobacco rod. The filter contains a hollow tubular segment and a filter part with one or more filter segments located in front of the hollow tubular segment.

US Pat. No. 4,034,765 discloses a cigarette filter consisting of two concentric cylindrical layers of fibrous filter materials, wherein the inner cylindrical layer has less draw resistance than the outer cylindrical layer.

Patent document US 2013/0192620 discloses an electronic smoking article including a liquid material, a heater operable to heat the liquid material to form an aerosol, a wick that supplies the liquid material to the heater, at least one air port adapted to supply air into the central air channel in front of the heater, and the fiber element behind the heater.

Patent document RU 2674508 discloses a heated aerosol-generating article for use with an aerosol-generating device having a heating element comprising a solid aerosol-forming substrate and a permeable airflow barrier mounted inside the wrapper to form a rod. The rod has a mouthpiece end and a distal end upstream of the mouthpiece end. The impermeable airflow barrier is designed (when intact) to substantially prevent air from being drawn through the solid aerosol-forming substrate when the user depresses the rod mouthpiece. This reduces the tendency of the aerosol-forming substrate to ignite.

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.

The essence of the invention

The first object of the invention is a product for use in a non-combustion aerosol delivery system, containing an aerosol-forming material and a mouthpiece connected thereto, characterized in that the pressure drop across the mouthpiece is less than 32 mm of water. Art.

A second aspect of the invention is a system comprising the above-described article and a non-combustion aerosol supply device for heating the aerosol-forming material of the article.

Embodiments of the invention are illustrated by drawings.

Brief description of drawings

In fig. 1 shows a side cross-sectional view of an article for use in a non-combustion aerosol delivery device, the article including a mouthpiece;

in fig. 2a is a cross-sectional side view of another article for use in a non-combustion aerosol delivery device, the article including a mouthpiece containing a capsule;

in fig. 2b shows the mouthpiece of the product shown in FIG. 2a, containing the capsule, is a cross-sectional view;

in fig. 3 - a device for producing an aerosol from the aerosol-forming material of the products shown in FIG. 1, 2a and 2b, front view;

in fig. 4 - device shown in FIG. 3, with the outer shell removed and without the product;

in fig. 5 - device shown in FIG. 3, front cross-sectional view;

in fig. 6 - device shown in FIG. 3, disassembled without outer shell;

in fig. 7A is a separate cross-sectional view of the heating assembly of the aerosol supply device;

in fig. 7B is a fragment of the heating assembly shown in FIG. 7A is an enlarged view;

in fig. 8 is a flow diagram of a method for manufacturing an article for use in a non-combustion aerosol supply device.

Carrying out the invention

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

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

products containing an aerosol-forming material and designed to be used in one of the specified systems for providing aerosol without combustion;

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.

Thus, a combustion aerosol delivery system is a system in which the aerosol-forming material included in the aerosol delivery system (or a component thereof) is burned or combusted to facilitate delivery to the user, and a non-combustion aerosol delivery system is a system that wherein the aerosol-forming material included in the aerosol delivery system (or component thereof) is not burned to facilitate delivery to the user.

In embodiments of the present invention, the delivery system is a non-combustion aerosol delivery system, such as a non-combustion aerosol delivery system with a power source.

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

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

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

Typically, a non-combustion aerosol delivery system may comprise a non-combustion aerosol delivery device and an article for use with the non-combustion aerosol delivery system. However, articles that themselves contain means for supplying energy to an aerosol-forming component can themselves form a non-combustion aerosol supply system.

In one embodiment of the invention, the non-combustion aerosol providing device may comprise a power source and a controller. The power source may be an electrical power source or an exothermic energy source. The exothermic energy source includes a carbon substrate onto which energy can be applied to transfer energy in the form of heat to an aerosol-forming material or heat transfer material located in close proximity to the exothermic energy source. In one embodiment of the invention, the article contains an energy source, such as an exothermic energy source, to generate an aerosol without combustion.

An article for use with a non-combustion aerosol providing device may comprise an aerosol-forming material, an aerosol-forming component, an aerosol-generating area, a mouthpiece, and/or an aerosol-forming material receiving area.

In one embodiment of the invention, the aerosol-forming component is a heater capable of interacting with the aerosol-forming material to release one or more volatiles from the aerosol-forming material to produce an aerosol. In one embodiment, the aerosol-forming component is capable of generating an aerosol from the aerosol-forming material without heating it. For example, the aerosol-forming component is capable of generating an aerosol from the aerosol-forming material without applying heat to it, such as through one or more of vibration, mechanical, pressure, or electrostatic means.

In one embodiment of the invention, the aerosol-forming 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 physiologically active odorless material is a material that is included in an aerosol-forming 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, benzyl phenylacetate , tributyrine, lauryl acetate, lauric acid, myristic acid and propylene carbonate.

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

In one embodiment of the invention, an article for use with a non-combustion aerosol providing device may comprise an aerosol-forming material or an area for receiving an aerosol-forming material. In one embodiment, an article for use with a non-combustion aerosol delivery device may comprise a mouthpiece. The aerosol-forming material receiving area may be a storage area for storing the aerosol-forming material. For example, the storage area may be a tank. In one embodiment, the aerosol-generating material receiving area may be separate from or integrated with the aerosol-generating area.

An aerosol-forming 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 aerosol-forming material may be in the form of, for example, a solid, liquid or gel, which may or may not contain nicotine and/or flavorings. In some embodiments, the aerosol-forming material may comprise an “amorphous solid,” which may 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 aerosol-forming material may, for example, comprise from about 50, 60, or 70 weight percent amorphous solid to about 90, 95, or 100 weight percent amorphous solid.

The aerosol-forming material may be present on the support. The support may, for example, be or contain paper, card, cardboard, construction paper, recovered aerosol-forming material, plastic material, ceramic material, composite material, glass, metal, or a metal alloy.

An aerosol modification agent is a substance capable of modifying an aerosol. 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 current collector is a material that can heat up when a changing magnetic field, for example an alternating one, penetrates it. The heating material may be electrically conductive, so the penetration of a changing magnetic field into it causes inductive heating of such material. The heating material may be magnetic, so the penetration of a changing magnetic field into it causes magnetohysteretic heating. The heating material can be either electrically conductive or magnetic, so the material can be heated using both heating mechanisms.

Induction heating is a process in which an electrically conductive object is heated by the penetration of a varying magnetic field into it. 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 a varying electrical current, such as alternating current, through the electromagnet. When an electromagnet and a heated object are suitably positioned relative to each other such that the resulting changing magnetic field generated by the electromagnet penetrates the object, eddy currents are generated within the object. An object through which electrical currents flow has resistance, so when eddy currents occur in an object, their flow through an object that has electrical resistance causes the object to heat up. This process is called Joule, ohmic or resistive heating. An object that can heat up during induction heating is called a current collector.

In one embodiment of the invention, the current collector is designed 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 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 produced by, for example, 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. In addition, 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. In addition, when induction heating and magnetohysteresis heating are used, no coupling is required between the varying magnetic field source and the object, which can result in increased design freedom, improved control over the heating profile, and reduced costs.

Products such as rods are often named according to their length: "regular" (typically in the 68-75mm range, e.g. 68mm to 72mm), "short" or "mini" (68mm and smaller), "king size" (typically in the range of 75-91 mm, e.g. 79 mm to 88 mm), "long" or "super-king" (usually in the range of 91-105 mm, e.g. 94 mm to 101 mm) and “ultra-long” (usually in the range from 110 mm to 121 mm).

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

Accordingly, a “king-size”, “super-thin” product, for example, will have a length of about 83 mm and a circumference of about 17 mm.

Each format can be produced with different length mouthpieces. The length of the mouthpiece is usually from 10 mm to 50 mm. The mouthpiece is connected to the aerosol-forming material by tipping paper, the length of which is greater than the length of the mouthpiece, for example, by 3-10 mm, so that the tipping paper encloses the mouthpiece and overlaps the aerosol-forming material, for example, in the form of a rod, for connecting the mouthpiece to this rod.

The products and their aerosol-forming materials and mouthpieces may be made in any of the above formats, but are not limited to them.

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 fiber tow 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 plasticizer such as triacetin, where the material is cellulose acetate tow, or the tow may be unplasticized. The tow may have any suitable characteristics, such as a fiber cross-sectional shape, for example, Y-shape, X-shape or other shapes, deniers per filament from 2.5 to 15, for example from 8.0 to 11.0 deniers per filament and general denier values from 5000 to 50000, for example from 10000 to 40000.

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.

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 (e.g., 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 fig. 1 shows a sectional view of an article 1 for use with a non-combustion aerosol supply device.

The article 1 includes a mouthpiece 2 and a cylindrical rod of aerosol-forming material 3, in this case tobacco material, connected to the mouthpiece 2. A pressure drop or pressure difference (also called draw resistance) across the mouthpiece, for example, at the ends of the downstream portion of the article 1 relative to the aerosol-forming material 3, preferably less than about 40 mm of water. 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 has been produced using a mouthpiece 2 having a pressure drop of less than 31 mmH2O. Art., for example, approximately 29 or 28 mm of water. Art. Alternatively or additionally, the pressure drop across the mouthpiece may be at least 10 mmH2O. Art., preferably at least 15 mm 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.

In this example, the mouthpiece 2 includes a body of material 6 located upstream of the hollow tubular element 4, in this example adjacent to and adjacent to the hollow tubular element 4. The body of material 6 and the hollow tubular element 4 together form a generally cylindrical overall outer shape and have a common longitudinal axis. The body of material 6 is wrapped with a first ficella 7 having preferably a paper weight of less than 50 ^gsm , more preferably from about 20 to 40 ^gsm . Preferably, the thickness of the first ficelle 7 is from 30 to 60 µm, more preferably from 35 to 45 µm. Preferably, the first ficelle 7 is non-porous, for example with a permeability of less than 100 Coresta units, for example less than 50 Coresta units. However, in other embodiments, the first ficell 7 may be porous, for example with a permeability greater than 200 Coresta units.

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 body of material 6 is from about 5 to 15 mm, more preferably from 6 to 12 mm, and most preferably from about 6, 7, 8, 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 (dpf) of 8.4 and a total denier of 21,000. Alternatively, the tow could have, for example, 9.5 dpf and a total denier of 12,000. In this example, the tow is made from plasticized cellulose acetate. The plasticizer used in the tow constitutes approximately 7% of the tow weight. 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, for example polylactic acid (PLA), other materials specified herein for tow, or the like. Preferably, the tow is 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. Such filament denier values correspond to a tow that has relatively coarse and thick fibers with smaller surface area, resulting in a lower pressure drop across die 2 than tows having lower deniers per filament. Preferably, in order to obtain a sufficiently uniform body of material 6, the tow should have a thread denier of no more than 12 dpf, preferably no more than 11 dpf, and even more preferably no more than 10 dpf.

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. Such total denier values correspond to a tow that occupies a reduced proportion of the cross-sectional area of the die 2, resulting in more lower pressure drop across tip 2 than tows 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 dpf, and the total denier is from 10,000 to 25,000. More preferably, the denier per thread is from 6 to 10 dpf, and the total denier is from 11,000 to 22,000. Preferably, the cross-section of the tow fibers is Y-shaped, although other embodiments may use other cross-sectional shapes of the tow fibers, such as an X-shape, with such Same values for denier per thread and total denier as above.

The aerosol-forming material 3, also called the aerosol-forming substrate 3, contains at least one aerosol-forming material. In this example, the aerosol-forming material is glycerin. In alternative examples, the aerosol-forming material may be other materials or combinations thereof. It has been found that the aerosol-forming material improves the organoleptic characteristics of the product by assisting in the transfer of compounds, such as aromatic compounds, from the aerosol-forming material to the consumer. However, a problem with adding such aerosol-forming materials to an aerosol-forming material in an article for use in a non-combustion 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 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, either hollow or enclosing a cylindrical body of filter material.

As shown in FIG. 1, the mouthpiece 2 of the article 1 includes an upstream end 2a adjacent to the aerosol-forming substrate 3 and a downstream end 2b remote from the aerosol-forming substrate 3. At the downstream end 2b, the mouthpiece 2 has a hollow tubular element 4, formed from a fiber bundle. 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 using the product 1. Additionally, the use of the tubular member 4 has been found to significantly reduce the temperature of the outer surface of the mouthpiece 2 even in front of the tubular element 4. This is due to the fact that the tubular element 4 directs the aerosol closer to the center of the mouthpiece 2, reducing the transfer of heat from the aerosol to the outer surface of the mouthpiece 2.

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 made in any of the formats described above, for example, with an outer circumference from 15 mm to 25 mm. Since the product must be heated to release the aerosol, increased heating efficiency is achieved by using products with smaller outer circumferences 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 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 efficient aerosol delivery and efficient heating capability.

The outer circumference of the mouthpiece 2 is substantially the same as the outer circumference of the aerosol-forming material rod 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. Along the entire length of the mouthpiece 2 and along part of the rod of aerosol-forming material 3, tipping paper 5 is wrapped with glue applied to its inner surface for connecting the mouthpiece 2 and rod 3. In this example, tipping paper 5 extends onto the rod of aerosol-forming material 3 by 5 mm, but in alternatively, it may extend over the shaft 3 by 3-10 mm, or more preferably 4-6 mm, to provide a secure connection between the mouthpiece 2 and the shaft 3. The paper density of the rim paper 5 may be greater than the density of the ficella paper used in the article 1, for example, its paper weight is from 40 to 80 g/m ² , more preferably between 50 and 70 g/m ² , and in this example 58 g/m ² . It has been found that these ranges of paper weights result in lining paper having acceptable tensile strength and at the same time being flexible enough to wrap around the article 1 and adhere along the longitudinal overlapping 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. Preferably, the wall thickness is greater than 0.9 mm, and more preferably 1.0 mm or more. Preferably, the wall thickness is substantially constant over the entire circumference of the wall of the hollow tubular element 4. However, if the wall thickness is not substantially constant, the wall thickness at any point along the circumference of the hollow tubular element 4 is preferably greater than 0.9 mm, and 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. Alternatively or in addition, the length of the hollow tubular element 4 is at least about 5 or 6 mm. In some preferred embodiments, the length of the hollow tubular element 4 is from about 5 to 20 mm, more preferably from about 6 to 10 mm, even more preferably from about 6 to 8 mm, and most preferably from about 6, 7 or 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 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 high hardness provided by the denser material and the lower heat transfer properties of the lower density material. For the purposes of the present invention, the "density" of the hollow tubular element 4 refers to the density of the 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 fiber tow forming the hollow tubular member 4 preferably has an overall denier of less than 45,000, more preferably less than 42,000. Such an overall denier has been found to produce a tubular member 4 that is not too dense. Preferably, the overall denier is at least 20,000, more preferably less 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-section of the fibers of the tow is Y-shaped, although other fiber shapes are possible, e.g. , X-shaped.

The fiber tow forming the hollow tubular member 4 preferably has a filament denier greater than 3. Such filament denier has been found to enable 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 tow forming the hollow tubular member 4 has a filament denier of from 4 to 10, more preferably from 4 to 9. In one example, the tow forming the hollow tubular member 4 has an 8Y40,000 tow formed from cellulose acetate and containing 18% plasticizer, such as triacetin.

The inner diameter of the hollow tubular member 4 is preferably greater than 3.0 mm. Smaller diameters may result in an increase in the rate of passage of the aerosol through the mouthpiece 2 into the user's mouth, such that the aerosol becomes too warm, for example reaching a temperature above 40 or 45°C. More preferably, the inner diameter of the hollow tubular element 4 is greater than 3.1 mm, and even more preferably greater than 3.5 or 3.6 mm. In one embodiment, the inner diameter of the hollow tubular element 4 is approximately 3.9 mm.

Preferably, the hollow tubular element 4 contains a plasticizer in an amount of 15 to 22% by weight. 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 a plasticizer in an amount of 16 to 20% by weight, for example about 17, 18 or 19%.

In this example, the mouthpiece 2 includes a first hollow tubular element 4 and a second hollow tubular element 8, also called a cooling element, located upstream of the first hollow tubular element 4. In this example, a second hollow tubular element 8 is located upstream next to the body material 6 or close to it. The body of material 6 and the second hollow tubular element 8 have a substantially cylindrical overall outer shape and a common longitudinal axis. The second hollow tubular member 8 is formed from multiple layers of paper that are wound parallel with the butt seams to form the tubular member 8. In this example, the tube consists of two layers, although in other examples 3, 4, or more paper layers could be used to form 3 layers. x, 4 or more multilayer 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 may also be formed using rigid ficelle and/or tipping paper as the second ficelle 9 and/or tipping paper 5, which does not require a separate tubular member. The rigid ficella and/or tipping paper are manufactured to have a rigidity sufficient to withstand the 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 paper weight of 70 up 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 to 200 µm, more preferably 100 to 160 µm or 120 to 150 µm. It may be desirable for both the second ficelle 9 and the mouthpiece 5 to be within these ranges to achieve an acceptable overall level of stiffness for the second hollow tubular member 8.

The second hollow tubular member 8 may also be formed using rigid ficelle and/or tipping paper as the second ficelle 9 and/or tipping paper 5, which does not require a separate tubular member. The rigid ficella and/or tipping paper are manufactured to have a rigidity sufficient to withstand the 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 paper weight of 70 up 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 to 200 µm, more preferably 100 to 160 µm or 120 to 150 µm. It may be desirable for both the second ficelle 9 and the mouthpiece 5 to be within these ranges to achieve an acceptable overall level of stiffness for the second hollow tubular member 8.

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 about 20 to 30 mm, more preferably about 22 to 28 mm, even more preferably about 24 to 26 mm, and most preferably about 25 mm. In this example, the length of the second hollow tubular element 8 is 25 mm.

The second hollow tubular element 8 is arranged in a circle 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 volatile components generated by the aerosol-forming material 3 flow. The second hollow tubular element 8 is hollow, forming a chamber for accumulating the aerosol, but is rigid enough to withstand the axial compressive forces and bending moments that may occur during time of manufacture and use of the product 1. The second hollow tubular element 8 provides physical separation between the aerosol-forming material 3 and the mass of material 6. The physical separation created by the second hollow tubular element 8 provides 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 the presence of 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 that allows the heated volatile components to cool, thereby allowing the aerosol-forming 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 could 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 , preferably more than 550 mm ³ , which allows for further improvement of the aerosol. In some examples, the volume of the internal cavity is from about 550 to 750 mm ³ , such as 600 or 700 mm ³ .

The second hollow tubular element 8 may be configured to provide a temperature difference of at least 40° C. 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 downstream end. downstream of the end of the second hollow tubular element 8. The second hollow tubular element 8 is preferably configured to provide a temperature difference of at least 60, 80, and preferably 100°C, 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, 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-forming material 3 when it is heated.

In alternative products, the second hollow tubular element 8 may be replaced by another cooling element, for example an element formed from a mass 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 by a second ficella 9, which is wrapped around all three sections. Preferably ^, the second ficelle 9 has a paper weight of less than 50 gsm, more preferably from about 20 to 45 ^gsm . Preferably, the thickness of the second ficelle 9 is from 30 to 60 μm, more preferably from 35 to 45 μm. The second ficelle 9 is preferably non-porous with a permeability of less than 100 Coresta units, for example less than 50 Coresta units. However, in alternative embodiments, the second ficell 9 may be porous, for example with a permeability greater than 200 Coresta units.

In this example, the aerosol-forming material 3 is wrapped in a wrapper 10. The wrapper 10 can be, for example, paper or paper-backed foil. In this example, the wrapper 10 is substantially airtight. In alternative embodiments, the permeability of the wrapper 10 is preferably less than 100 Coresta units, more preferably less than 60 Coresta units. It has been found that wrappers with low permeability, for example having a permeability of less than 100 Coresta units, and more preferably less than 60 Coresta units, lead to improved aerosol generation in aerosol-forming material 3. This is due to a decrease in the loss of aerosol compounds passing through the wrapper 10. Permeability The wrappers 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 formation within the aerosol-forming material 3. In this example, the aluminum foil has a metal layer approximately 6 µm thick. 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 to 16 microns. Aluminum foil does not necessarily have a paper backing, but may have a backing of 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 20 to 60 µm, more preferably 30 to 50 µm, to achieve suitable heat transfer and strength properties. 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 passing through the product. In alternative embodiments, the article may have a ventilation level of 50 to 80% of the aerosol passing through the article, such as 65 to 75%. Such ventilation helps to slow the flow of the aerosol passing through the mouthpiece 2, thereby allowing the aerosol to cool sufficiently before it reaches the downstream end 2b of the mouthpiece 2. Ventilation occurs directly in the mouthpiece 2 of the product 1. In this example, the vent is formed in the second hollow tubular member 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 by a laser, at a distance of 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 second hollow tubular element 8. In alternative embodiments, ventilation may be formed in the mouthpiece in 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-forming material 3 contains 14% by weight of the aerosol-forming material 3. Preferably, the aerosol-forming material constitutes at least 5% by weight of the aerosol-forming material, more preferably at least 10%. Preferably, the aerosol-forming material constitutes less than 25% by weight of the aerosol-forming material, more preferably less than 20%, such as 10 to 20%, 12 to 18%, or 13 to 16%.

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

The volume of aerosol-forming material 3 may vary from approximately 200 to 4300 mm ³ , preferably from 500 to 1500 mm ³ , more preferably from 1000 to 1300 mm ³ . Volumes of aerosol-forming material, for example, from about 1000 to 1300 mm ³ produce a more attractive aerosol with higher organoleptic characteristics compared to volumes selected at the lower end of the range.

The mass of aerosol-forming material 3 may be more than 200 mg, for example about 200 to 400 mg, preferably 230 to 360 mg, more preferably 250 to 360 mg. It was found that a large mass of aerosol-forming material leads to an improvement in the organoleptic characteristics of the produced aerosol compared to an aerosol produced from a smaller mass of aerosol-forming material.

The aerosol-forming material or substrate is preferably formed from a tobacco material that includes a tobacco component.

In the tobacco material, the tobacco component preferably comprises paper reconstituted tobacco. The tobacco component may also comprise sheet tobacco, extruded tobacco and/or strip cast tobacco.

Aerosol-forming material 3 contains reconstituted tobacco material with a density of less than about 700 milligrams per cubic centimeter (mg/cm ³ ). This tobacco material has been found to be particularly effective because it can be heated more quickly to release the aerosol compared to denser materials. The heating properties of various aerosol-forming materials, such as strip cast reconstituted tobacco material and paper reconstituted tobacco material, were tested. It was found that when heat is supplied to each of the specified aerosol-forming materials, there is a certain temperature of zero heat flow, below which the useful heat flow is endothermic, i.e. more heat enters the material than leaves the material, and above which the useful heat flow is exothermic, i.e. More heat leaves the material than enters the material. Materials with a density less than 700 mg/cm ³ had a lower zero heat flux temperature. Since a significant portion of the heat flow exits the material through aerosol formation, the lower zero temperature of the heat flow has a beneficial effect on the time required for the first release of the aerosol from the aerosol-forming material. For example, aerosol-forming materials with a density less than 700 mg/cm ³ have been found to have a zero heat flux temperature of less than 164°C, and materials with a density greater than 700 mg/cm ³ have a zero heat flux temperature above 164°C.

The density of the aerosol-forming 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 for a longer release of the aerosol.

Preferably, the aerosol-forming material 3 contains reconstituted tobacco material with a density of less than about 700 mg/cm ³ , for example, paper reconstituted tobacco material. More preferably, aerosol-forming material 3 contains reconstituted tobacco material with a density of less than about 600 mg/cm ³ . Alternatively or additionally, the aerosol-forming material 3 preferably contains reconstituted tobacco material with a density of at least 350 mg/cm ³ which is considered to provide sufficient thermal conductivity of the material.

The tobacco material may be cut tobacco. The cut tobacco may have a cut 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). cm, which corresponds to a width of the cut part of approximately 1.27 mm). In one example, the cutting width of the cut tobacco is 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 to 2.0 mm, for example 0.6 to 1.5 mm or 0.6 to 1.7 mm, results in a tobacco material that is advantageous in terms of ratio surface area to volume, especially when heated, overall density and pressure drop of the aerosol-forming material 3. Cut tobacco can be formed from a mixture of different types of tobacco material, such as paper reconstituted tobacco, sheet tobacco, extruded tobacco and strip molded tobacco. Preferably, the tobacco material comprises paper reconstituted tobacco or a mixture of paper reconstituted tobacco and leaf tobacco.

The tobacco material may contain filler. The filler is typically a non-tobacco component, i.e. a component that does not include ingredients derived from tobacco. The filler may be a non-tobacco fiber, such as wood fiber, pulp or wheat fiber. The filler may also be an inorganic material such as chalk, perlite, vermiculite, diatomaceous earth, colloidal silica, magnesium oxide, magnesium sulfate and magnesium carbonate. The filler may also be a non-tobacco cast material or a non-tobacco extruded material. The filler may comprise from 0 to 20% by weight of the tobacco material or from 1 to 10% by weight of the composition. In some embodiments, the filler may be absent.

The tobacco material may contain 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 promote aerosol formation by promoting the initial vaporization and/or condensation of gas into a respirable solid and/or liquid aerosol. In some embodiments, the aerosol-forming material can improve the delivery of flavor additive from the aerosol-forming material. In general, any suitable aerosol-forming material or agent may be included in the aerosol-forming material, including those described above. Other suitable aerosol-forming materials may be a polyol such as sorbitol, glycerol and glycols such as propylene glycol or triethylene glycol; low molecular weight alcohol such as monohydric alcohols, high boiling point hydrocarbons, acids such as lactic acid, glycerol derivatives, esters such as diacetin, triacetin, triethylene glycol diacetate, triethyl citrate or myristates including ethyl myristate and isopropyl myristate, and esters of aliphatic carboxylic acids , such as 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 from 0.1 to 0.3% by weight of the composition.

The aerosol-forming material may be included in any component, such as any tobacco component, tobacco material, and/or filler, 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 described above.

The tobacco material may comprise from 10% to 90% by weight of the tobacco leaf, and the aerosol-forming material may comprise up to about 10% by weight of the tobacco leaf. It has been found that to achieve an overall level of aerosol-forming material of 10 to 20% by weight of the tobacco material, advantageously it can be added in higher weight percentages to another component of the tobacco material, such as reconstituted tobacco material.

Tobacco material 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 may be contained in an amount of from 10 to 90% by weight of the tobacco leaf with a nicotine content of more than 1.5% by weight of the tobacco leaf. It has been found that the use of 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, results in a tobacco material with an appropriate nicotine level, but with better organoleptic characteristics than using only one paper reconstituted tobacco. The tobacco leaf, for example cut tobacco, may have a nicotine content of, for example, 1.5 to 5% by weight of the tobacco leaf.

The tobacco material may contain an aerosol modifying agent. In one embodiment, the tobacco material contains menthol, forming a menthol product. The tobacco material may contain from 3 to 20 mg of menthol, preferably from 5 to 18 mg, and more preferably from 8 to 16 mg of menthol. In this example, the tobacco material contains 16 mg of menthol. The tobacco material may contain menthol from 2 to 8% by weight, preferably from 3 to 7%, and more preferably from 4 to 5.5%. 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 additionally, the use of a large volume of aerosol-forming material, such as tobacco, allows for a higher level 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-forming material, such as tobacco material, is used .

In the compositions described above where amounts are given in % by weight, for the avoidance of doubt, this refers to the base based on 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 may vary and may be, for example, from 5 to 15% by weight. The water content of the tobacco material may vary depending, for example, on the temperature, pressure and humidity at which the compositions are maintained. The water content can be determined by Karl-Fischer analysis 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 (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, but is included in the weight of the "forming material". aerosol material" in weight percentage as above. 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 and an aerosol-forming material described above. In one embodiment, the tobacco material consists essentially of the tobacco component described above and the aerosol-forming material described above. In one embodiment, the tobacco material consists of the tobacco component described above and the aerosol-forming material described above.

Paper reconstituted tobacco is contained in the tobacco component of the tobacco material 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 contained in an amount of from 10 to 80% or from 20 to 70% by weight of the tobacco component. In another embodiment, the tobacco component consists or essentially consists of paper reconstituted tobacco. In preferred embodiments, leaf tobacco is contained 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 comprise at least 10% by weight of the tobacco component, with the remainder of the tobacco component comprising paper reconstituted tobacco, strip cast reconstituted tobacco, or a combination of strip cast reconstituted tobacco and another form of tobacco, such as tobacco pellets.

Paper reconstituted tobacco refers to tobacco material obtained by the process of extracting raw tobacco with a solvent, resulting in an extract of soluble substances and a residue containing fibrous material. The resulting extract (usually after condensation and, if required, further processing) is then 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 the following components: 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 can alternatively or additionally be used as starting material.

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

In fig. 2a shows another article 1', including a mouthpiece 2' containing a capsule. In fig. 2b shows a section along line A-A' of the mouthpiece with capsule. The article 1' and the mouthpiece 2' are the same as those shown in FIG. 1, article 1 and mouthpiece 2, except that the aerosol modifying agent is contained within the body of the material 6, in this example in the form of a capsule 11, and that an oil-resistant first ficell 7' encloses the body of the material 6. In other examples, the aerosol modifying agent may be provided in other forms, such as material introduced into the body of material 6 or applied to a thread, for example, a thread carrying a flavor or other aerosol modifying agent, which may also be located within the body of material 6.

The capsule 11 may be frangible, for example, it may have 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 the material 6. In other words, the capsule 11 is completely surrounded by the material forming the body 6. In other examples, several frangible capsules may be located within the body of the material 6, for example, 2, 3 or more. 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 different from each other in terms of size and/or payload. In other examples, there may be multiple bodies of material 6, 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, such as a flavoring agent or other agent, which may be any of the flavoring agents or aerosol modifiers described herein. The capsule shell may be broken by the user to release a 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 additionally, 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 with 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 approximately 10 to 50 mg.

In this example, capsule 11 is located inside the body of material 6 centrally in the longitudinal direction, i.e. capsule 11 is positioned such that its center is 4 mm from each end of the material body 6. In other examples, capsule 11 may be located at a position other than the central longitudinal position in the material body 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 configured such that the capsule 11 and the ventilation holes 12 are longitudinally offset relative to each other in the mouthpiece 2'.

A section of the mouthpiece 2' along the line A-A' (Fig. 2a) is shown in Fig. 2b. In fig. 2b shows capsule 11, material body 6, first and second ficelles 7', 9 and mouthpiece 5. In this example, capsule 11 is centered on the longitudinal axis (not shown) of mouthpiece 2'. The first and second ficelles 7', 9 and the tipping paper 5 are arranged concentrically around the material body 6.

The destructible capsule 11 has a core-shell structure. That is, the encapsulating or protective material creates a shell around the core that contains the aerosol modifying agent. The structure of the shell prevents the release 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 called 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, in particular, the shell can be ruptured by pressure applied by the user's fingers when the user wants to release the capsule core.

In some cases, the protective material is heat-resistant, i.e. in some cases, the barrier will not rupture, melt or otherwise fail at the temperature reached at the capsule site during use of the aerosol delivery device. By way of illustration, the capsule located in the mouthpiece may be exposed to temperatures, for example, in the range of 30 to 100°C, and the barrier material may continue to retain the liquid core to a temperature of at least about 50 to 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 weight of the capsule may be from about 1 to 100 mg, preferably from 5 to 60 mg, from 8 to 50 mg, from 10 to 20 mg or from 12 to 18 mg.

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

According to the invention, the capsule, as described above, contains a core and a shell. Capsules may have a crush strength of from about 4.5 to 40 N, more preferably from 5 to 30 N, or up to about 28 N (for example, from about 9.8 to 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.

Capsules may be substantially spherical with a diameter of at least 0.4, 0.6, 0.8, 1.0, 2.0, 2.5, 2.8 or 3.0 mm. The capsule diameter can be no more than 10.0, 8.0, 7.0, 6.0, 5.5, 5.0, 4.5, 4.0, 3.5 or 3.2 mm. For example, the diameter of the capsule may range from about 0.4 to 10.0 mm, from 0.8 to 6.0 mm, from 2.5 to 5.5 mm, or from 2.8 to 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 article of the invention.

The largest cross-sectional area of the capsule 11 in some cases 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, its largest cross-sectional area is 7.07 mm ² . For a mouthpiece 2' having a circumference of 21 mm as described above, the material body 6 has an outer circumference of 20.8 mm and its radius 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 the material 6. A capsule with the largest cross-sectional area less than 28% of the cross-sectional area of the mouthpiece portion 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 there is sufficient space around the capsule 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'.

Preferably, the pressure drop or pressure difference (also called pull resistance) across the ends of the product, measured as the pressure drop across the open hole (i.e., with the vents open), is reduced by less than 8 mmH2O upon capsule rupture. Art. More preferably, the pressure drop across the open hole is reduced by less than 6 mm of water. 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 pressure drop, can be achieved whether or not the consumer decides to destroy the capsule.

In some embodiments, when the aerosol-forming material 3 is heated to produce an aerosol, for example, in the aerosol supply device according to the invention, the capsule portion of the mouthpiece 2 reaches a temperature of 58 to 70° C. during use. As a result of exposure to this temperature, the contents of the capsule are heated sufficiently to facilitate the evaporation of the contents of the capsule, for example, an aerosol modifying agent, and its entry into the aerosol as the aerosol generated by the system passes through the mouthpiece 2. Heating of the contents of the capsule 11 can occur, for example, before , as the capsule 11 will be destroyed, therefore, after the destruction of the capsule 11, its contents are more easily released into the aerosol passing through the mouthpiece 2. Alternatively, the contents of capsule 11 may be heated to this temperature after capsule 11 has been ruptured, again resulting in increased release of the contents into an aerosol. It has been found that preferably a temperature of the mouthpiece in the range of 58 to 70° C. is high enough to allow easier release of the contents of the capsule, 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 leading to unpleasant sensations when the consumer presses on the mouthpiece 2 to destroy the capsule 11.

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 the probe) and located near the location of the capsule 11. Similarly, a temperature sensor can be placed on the outer surface of the mouthpiece 2 to measure the temperature of the outer surface.

Table 1.0 below shows the temperature at the capsule location in the mouthpiece 2 of the product used in the aerosol delivery system during the first 5 puffs. The data is presented for the product when heated using a spiral heating device as described above with reference to FIG. 4-8, using a “standard” heating profile and for the same product when heated by the same device using an “accelerated” heating profile. The "accelerated" heating profile is user selectable and allows for 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 61.5°C with the “standard” heating profile and a maximum temperature of 63.8°C with the “accelerated” heating profile. It has been found that a maximum temperature in the range of 58 to 70°C, preferably in the range of 59 to 65°C, and more preferably in the range of 60 to 65°C is particularly preferred for promoting evaporation of the contents of the capsule 11 while maintaining a suitable temperature of the outer surface of the mouthpiece 2.

Table 1.0 Puff number T°C at the location of the capsule in the spiral heating device with a “standard” heating profile T°C at the location of the capsule in the spiral heating device with 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 their 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 above 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-forming 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 an aerosol is from 1000 to 4000 gram-force. Accordingly, although the capsule 11 is exposed to temperatures above 58°C, for example between 58 and 70°C, it is capable of maintaining a crush strength within a range that has been found to allow the capsule 11 to be easily crushed by the consumer, providing This provides the consumer with sufficient tactile feedback indicating that capsule 11 has been destroyed. Maintaining such crush strength is achieved by selecting a suitable gelling agent for the capsule, 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 burst strength of the capsule when it is inside the mouthpiece and before heating the aerosol-forming 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 may 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 circular metal stylus 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, the pre-test speed was 5.00 mm/sec, and the re-test speed was 10 mm/sec. The applied force was 5000 g. The test articles were smoked using a Borgwaldt A14 syringe drive device in accordance with the known Health Canada heavy smoking regimen (puff volume 55 ml, puff duration 2 sec, pause between puffs 30 sec) using standard test equipment . Three puffs were performed using this tightening mode, and capsule crush strength was measured for 30 seconds after the third puff. The test article was equivalent to article 1 shown in FIG. 1 and 2a 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 wrapped in parallel with abutting seams, and having a total thickness of 300 μm. The 3 mm diameter capsule was located within an 8 mm long cellulose acetate tow body having tow characteristics of 9.5-12000 and a target 9% triacetin plasticizer.

The protective material may contain one or more of the following components: 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 protective material may contain a coloring agent that facilitates the positioning of the capsule within the article during its manufacture. 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 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. The preferred filler is dextrin. 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 capsule core contains an aerosol modifier, which can be any volatile substance that modifies at least one property of the aerosol. For example, the aerosol substance may have its pH, organoleptic properties, water content, delivery characteristics, or flavor modified. In some cases, the aerosol modifier may be an acid, a base, water, or a flavoring agent. In some embodiments, the aerosol modifier contains one or more flavoring agents.

A preferred flavoring may 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, 35, 40, 45% or 50% by weight flavor.

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, 35, 40, 45 or 50% by weight flavor. In some cases, the core may contain about 75% by weight flavor, or preferably less than (based on the total weight of the core) about 65, 55, or 50% by weight flavor. For example, the capsule may include an amount of flavoring ranging from 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, 3 or 4 mg of aerosol modifier, preferably at least about 4.5, 5, 5.5 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.

If 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 range from 9 to 13, preferably from 10 to 12. Methods for preparing capsules include co-extrusion, followed, if necessary, by centrifugation and curing and/or drying. The contents of WO 2007/010407 A2 are incorporated herein by reference in their entirety.

In the examples described above, each mouthpiece 2, 2' comprises one body of material 6. In other examples, the mouthpiece of FIG. 1 or fig. 2a and 2b may include multiple bodies of material. The mouthpieces 2, 2' may contain a cavity between the bodies of material.

In some examples, the mouthpiece 2, 2' located downstream of the aerosol-forming 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 above, 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 located on the wrapper, for example, on the outward facing surface of the tipping paper 5, which comes into contact with the lips of the consumer in 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-forming material 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-forming material 3. The aerosol-modifying agent or other sensation-producing material may be at least partially dissolved in water such that it is transmitted 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 facilitates the transfer of the aerosol modifying agent into the aerosol produced by the aerosol-forming material 3. A suitable sensate material may be a flavoring agent as described above, sucralose or a cooling agent such as menthol or the like.

Next, an aerosol supply device for heating the aerosol-forming material 3 of the above-described articles 1, 1' will be described. The aerosol supply device preferably includes a coil, since this has been found to provide improved heat transfer to the article 1, 1', compared to other devices.

In some examples, the coil is configured to heat 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-forming material, thereby causing the aerosol-generating material to heat.

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, when 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, which may preferably be positioned or be positioned relative to the coil in such a manner as to provide said 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, 1' for insertion into the heating zone of the device, wherein the article 1, 1' also contains an aerosol-forming material 3 , and it can be removed from the heating zone after use. Both the device and such article 1, 1' may comprise at least one suitable heating element, for example at least one electrically conductive heating element, and the coil may cause heating of one or more heating elements in both the device and the article, when it is in the heating zone.

In some examples, the coil has a helical shape. In some examples, the coil surrounds at least a portion of the heating zone of the device that is configured to receive the aerosol-forming material. In some examples, the helical coil 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 aerosol delivery device to reach operating temperature faster than when using an aerosol supply device without a coil. For example, an aerosol delivery device containing the coil described above can reach an operating temperature at which the first puff can be taken 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 the use of the above-described coil in a device for heating an aerosol-forming material accelerates the production of an aerosol. For example, consumers believe that the aerosol produced by a device with the coil described above feels closer to the aerosol produced by commercial cigarettes than the aerosol produced by other non-combustion aerosol delivery systems. This occurs as a result of reduced time to reach the required heating temperature, higher heating temperatures, and/or the ability of the coil to simultaneously heat a relatively large volume of aerosol-forming material, resulting in the aerosol temperature resembling the temperature of the aerosol produced by factory-made cigarettes. In manufactured cigarettes, 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 containing the coil described above is also capable of heating an aerosol-forming material, such as tobacco material, to release aromatic compounds, resulting in an aerosol that consumers perceive to be more similar to the aerosol produced by manufactured cigarettes.

The use of an aerosol delivery system including a coil as described above, such as an induction coil, that heats at least a portion of the aerosol-forming material to at least 200°C, more preferably at least 220°C, can produce an aerosol from the aerosol-forming material that has special characteristics that are considered to be more similar to those of manufactured cigarettes. For example, when heating an aerosol-forming material including nicotine with an induction heater heated to a temperature of at least 250°C, with an air flow of at least 1.50 l/m for a two-second period, the following characteristics were obtained:

at least 10 μg of nicotine is produced from the aerosol-forming 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;

from the aerosol-forming material, at least 100 μg of the aerosol-forming material can be aerosolized;

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

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-forming material at an air flow of at least 1.50 L/m for a specified period of time. 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-forming material at an air flow of at least 1.50 L/m for a specified period of time.

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

As used 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 solid particles, the term refers to the average size of all components.

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

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

The non-combustion aerosol supply device is preferably configured to heat the aerosol-forming material 3 of the article 1, 1' to a maximum temperature of at least 160°C, preferably to a maximum temperature of at least about 200, 220 or 240°C, and more preferably to a maximum temperature of not less than 270°C at least once during the heating process followed by the aerosol supply device.

The use of an aerosol supply system with a coil as described above, for example an induction coil, which heats at least a portion of the aerosol-forming material to at least 200°C, and more preferably to at least 220°C, produces an aerosol from the aerosol-forming material in article 1, 1' having a higher temperature when the aerosol exits the mouthpiece end of the mouthpiece 2, 2', which is considered to be closer to manufactured cigarettes than the aerosol produced by conventional devices. For example, the maximum temperature of the aerosol measured at the mouthpiece of the article 1, 1' may preferably be greater than 50°C, more preferably greater than 55°C, and even more preferably greater than 56 or 57°C. Additionally or alternatively, the maximum temperature of the aerosol measured at the mouthpiece of the article 1, 1' may be less than 62°C, more preferably less than 60°C, and even more preferably less than 59°C. In some embodiments, the maximum temperature of the aerosol measured at the mouthpiece of the article 1, 1' may preferably be from 50 to 62, more preferably from 56 to 60°C.

In fig. 3 shows a non-combustion aerosol providing device 100 for producing an aerosol from an aerosol-forming material such as the above-described aerosol-forming material 3 of the products 1, 1'. In general, the device 100 may be used to heat a wearable article 110, such as an article 1, 1', containing an aerosol-generating medium, to produce an aerosol or other respirable medium that is inhaled by a user of the device 100. The device 100 and the wearable article 110 together form a system.

The device 100 includes a housing 102 (in the form of an outer shell) that surrounds 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 assembly. 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.

The device 100 in this example includes a first end member 106 that includes a cover 108 that is movable relative to the first end member 106 to cover the opening 104 when the product 110 is not present. In fig. 1, cover 108 is shown in an open configuration, however it may change to a closed configuration. For example, the user may slide the cover 108 in the direction of arrow "B".

The device 100 may also include a user-controllable input interface 112, such as a button or switch, that when pressed causes the device 100 to operate. For example, a user may turn on device 100 using switch 112.

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

In fig. 4 shows the device 100 shown in FIG. 3, with the outer shell 102 removed and the article 110 removed. The device 100 has a longitudinal axis 134.

As shown in FIG. 4, 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 member 116 at least partially defines the bottom surface of the device 100. The edges of the outer cover 102 may also define a portion of the end surfaces. In this example, cover 108 also defines a portion of the top surface of device 100.

The end of the device closest to the opening 104 (or closest to the mouth) may be referred to as the proximal end of the device 100 because 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 input interface 112 to begin heating the aerosol-generating material, and draws in the aerosol generated in the device. This causes the aerosol to pass through the device 100 along a flow path to the proximal end of the device 100.

The other end of the device furthest from the opening 104 may be referred to as the distal end of the device 100 because it is furthest away from the user's mouth in use. When the user draws in the aerosol generated in the device, the aerosol passes from the distal end of the device 100.

The device 100 also includes a power supply 118. The power source 118 may be, for example, a battery, such as a rechargeable battery or a non-rechargeable battery. Examples of suitable batteries include, for example, a lithium battery (such as a lithium-ion battery), a nickel battery (such as a nickel-cadmium battery), and an alkaline battery. The battery is electrically coupled to the heating assembly to supply electrical power when needed and under the control of a controller (not shown) to heat the aerosol-forming material. In this example, the battery is connected to a central support 120 that supports the battery 118.

The device also includes at least one electronic module 122, which may include, for example, a printed circuit board. Circuit board 122 may include at least one controller, such as a processor and memory. Circuit board 122 may also include one or more electrical paths for electrically interconnecting various electronic components of device 100. For example, battery terminals may be electrically connected to circuit board 122 so that power can be distributed throughout device 100. Receptacle 114 may also be electrically connected to the battery via conductive paths.

In this embodiment of the device 100, the heating assembly is an induction heating assembly and includes various components for heating the aerosol-forming material of the article 110 by induction heating. Induction heating is the process of heating an electrically conductive object (such as a pantograph) using electromagnetic induction. An induction heating assembly may include an inductor, such as one or more induction coils, and a device for passing a varying electrical current, such as alternating current, through the induction element. The changing electric current in the induction element creates a changing magnetic field. An alternating magnetic field penetrates through a pantograph suitably positioned relative to the inductive element, creating eddy currents within the pantograph. The pantograph has electrical resistance to eddy currents, therefore, the flow of eddy currents causes Joule heating of the pantograph. If the pantograph contains a ferromagnetic material, such as iron, nickel, or cobalt, heat may also be generated by losses in the pantograph due to magnetic hysteresis, due to 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 heating by heat transfer, for example, 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 apparatus 100 includes a current collecting structure 132 (referred to as a "pantograph"), a first induction coil 124, and a second induction coil 126. The first and second induction coils 124, 126 are made of electrically conductive material. In this example, the first and second induction coils 124, 126 are made of litz wire wound in a spiral to form helical induction coils 124, 126. The litz wire is composed of a plurality of individual wires that are individually insulated and twisted together to form a single wire. Litz wires are designed to reduce skin effect losses in the conductor. In the device 100, the first and second induction coils 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 induction coil 124 is configured to generate a first alternating magnetic field to heat the first portion of the pantograph 132, and the second induction coil 126 is configured to generate a second alternating magnetic field to heat the second portion of the pantograph 132. In this example, the first induction coil 124 is adjacent to the second induction coil coil 126 in a direction along the longitudinal axis 134 of the device 100 (that is, the first and second induction coils 124, 126 do not overlap). The current collector structure 132 may include one, or two, or more individual current collectors. The ends 130 of the first and second induction coils 124, 126 may be connected to the circuit board 122.

It should be noted that at least one characteristic of the first and second induction coils 124, 126 may be different from each other in some examples. For example, the first telecoil 124 may have at least one different characteristic than the second telecoil 126. Specifically, in one example, the first telecoil 124 may have a different inductance than the second telecoil 126. Referring to FIG. 5, the first and second induction coils 124, 126 are of different lengths such that the first induction coil 124 is wound on a smaller section of the pantograph 132 compared to the second induction coil 126. Thus, the first induction coil 124 may contain a different number of turns than the second induction coil. 126 (assuming that the distance between the individual turns is substantially the same). In yet another example, the first induction coil 124 may be made of a different material than the second induction coil 126. In some examples, the first and second induction coils 124, 126 may be substantially identical.

In this example, the first induction coil 124 and the second induction coil 126 are wound in opposite directions. This can be useful if the induction coils turn on at different times. For example, the first induction coil 124 may first be operated to heat the first section/part of the article 110, and later the second induction coil 126 may be operated to heat the second section/part of the article 110. Winding the coils in opposite directions helps reduce the current induced in the inactive coil. , when used in combination with a specific type of control circuit. Shown in FIG. 5, the first induction coil 124 is a right-handed coil, and the second induction coil 126 is a left-handed coil. However, in another embodiment, the induction coils 124, 126 may be wound in one direction, or the first induction coil 124 may be a left-handed helix and the second induction coil 126 may be a right-handed helix.

The current collector 132 in this example is hollow and therefore defines a container into which the aerosol-forming material is placed. For example, article 110 may be inserted into pantograph 132. In this example, pantograph 132 is tubular with a circular cross-section.

The current collector 132 may be made of one or more materials. Preferably, pantograph 132 comprises carbon steel coated with nickel or cobalt.

In some examples, the current collector 132 may comprise at least two materials capable of being heated by an alternating magnetic field 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 induction coil 124 may contain a first material, and the second section of pantograph 132 that is heated by the second induction coil 126 may contain a second different material. In another example, the first section may contain both first and second materials, which may be heated differently depending on the operation of the first induction coil 124. The first and second materials may be adjacent along an axis defined by the pantograph 132, or may form different layers within the 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 induction coil 126. The third and fourth materials may be adjacent along an axis defined by the current collector 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 the second material. Alternatively, all materials may be different. The current collector may comprise, for example, carbon steel or aluminum.

The device 100 of FIG. 4 also 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 helps to isolate the various components of the device 100 from the heat generated in the current collector 132.

The insulating member 128 may also fully or partially support the first and second induction coils 124, 126. For example, as shown in FIG. 2, the first and second inductive 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 insulating element 128 does not abut the first and second inductor coils 124, 126. For example, there may be a small gap between the outer surface of the insulating member 128 and the inner surface of the first and second induction coils 124, 126.

In a specific example, the pantograph 132, the insulating element 128, and the first and second induction coils 124, 126 are located along the same central longitudinal axis of the pantograph 132.

In fig. 5 shows a 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 also includes a support 136 that engages one end of the pantograph 132 to hold it 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 input interface 112.

The device 100 also includes a second 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 the support 136 .

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

In fig. 6 is an exploded view of the device 100 shown in FIG. 5, without outer shell 102.

In fig. 7A shows a portion of the device 100 of FIG. 5 in section. In fig. 7B is a close-up view of the area indicated by the circle in FIG. 8A. In fig. 8A and 8B show article 110 placed in pantograph 132, with article 110 sized such that the outer surface of article 110 is adjacent to the inner surface of pantograph 132. This provides the most efficient heating. Article 110 includes an aerosol-forming material 110a located within pantograph 132. Article 110 may also include other components such as a filter, wrapping materials, and/or a cooling structure.

As shown in FIG. 7B, the outer surface of the pantograph 132 is spaced from the inner surface of the induction coils 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 4.3 to 3.5 mm or approximately 3.25 mm.

In fig. 7B also shows that the outer surface of the insulating element 128 is spaced from the inner surface of the induction coils 124, 126 by a distance 152 measured in a direction perpendicular to the longitudinal axis 158 of the pantograph 132. In one specific example, the distance 152 is approximately 0.05 mm. In another example, the distance 152 is substantially zero such that the induction coils 124, 126 abut and touch the insulating element 128.

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

In one example, pantograph 132 has a length of about 40 to 60 mm, 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 to 2 mm, 0.25 to 1 mm, or about 0.5 mm.

In use, the above-described articles 1, 1' can be inserted into an aerosol supply device such as the device 100 of FIG. 3-7. At least a portion of the mouthpiece 2, 2' of the product 1, 1' protrudes from the device 100 and can be placed in the mouth of the user. The aerosol is produced by heating the aerosol-forming material 3 using the device 100. The aerosol produced from the aerosol-forming material 3 passes through the mouthpiece 2 into the mouth of the user.

The articles 1, 1' described above have particular advantages, for example, when used with non-combustion aerosol delivery devices such as the device 100 described with reference to FIGS. 3-7. In particular, it has surprisingly been found that the first tubular element 4 formed from a fiber tow has a significant influence on the temperature of the outer surface of the mouthpiece 2 of the products 1, 1'. For example, when the hollow tubular member 4 formed from the fiber tow is wrapped with an outer wrapper such as tipping paper 5, the outer surface of the outer wrapper in the region corresponding to the position of the hollow tubular member 4 reaches a maximum temperature of less than 42° C., preferably less than 40° C., in use. °C, and more preferably less than 38 or 36 °C.

Table 2.0 below shows the temperature of the outer surface of the product 1 in FIG. 1 when heated using the device 100 of FIG. 3-7. 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 (indicated in table 2.0 as position 2) was at a distance of 8 mm from the downstream end 2b of the mouthpiece 2, and the third position (indicated in table 2.0 as position 3) was at a distance of 12 mm from the downstream end 2b end 2b of mouthpiece 2.

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

For comparison with the above-described tubular filament tow members 4, a control product was tested in which, instead of the tubular filament tow member 4, a known spirally wound paper tube was used, having the same design as the second hollow tubular member 8 described above, but with a length of 6 mm, not 25 mm.

The test was carried out for the first five puffs, as by the fifth puff the temperature generally peaked and then began to drop, so approximately the maximum temperature was observed. For each sample, the test was carried out 5 times, and the temperatures were the average values for these 5 tests. Health Canada's known high-intensity 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, the use of the tow-shaped tubular member 4 reduces the temperature of the outer surface of the mouthpiece 2 compared to the control article at each puff and at each position on the test mouthpiece 2. The tow-shaped tubular member 4 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 during the first three puffs and by more than 5°C when 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

In fig. 8 shows a method for manufacturing an article for use in a non-combustion aerosol delivery system.

In step S101, the first and second aerosol-forming material portions, each containing an aerosol-forming material, are positioned adjacent the respective first and second longitudinal ends of the mouthpiece shaft, the mouthpiece shaft comprising a shaft in the form of a hollow tubular member formed from a fiber tow located between the first and second longitudinal ends of the mouthpiece shaft. second ends. In this example, the core of the hollow tubular element includes a first hollow tubular element 4 of double length, placed between the first and second corresponding bodies of material 6. At the outer end of each body of material 6, a corresponding second tubular element 8 is positioned, which is adjacent to the outer ends of these second tubular elements. elements 8 on which the first and second sections of the aerosol-forming material are positioned. The mouthpiece shaft is wrapped with the second ficella described above.

In step S102, the first and second portions of the aerosol-forming material are connected to the mouthpiece shaft. In this example, this is accomplished by wrapping the above-described tipping paper 5 around the mouthpiece shaft and at least a portion of each of the sections of aerosol-forming material 3. In this example, the tipping paper 5 extends approximately 5 mm in the longitudinal direction onto the outer surface of each section of the aerosol-forming material 3.

In step S103, the hollow tubular member shaft is cut to form first and second articles, each of which includes a mouthpiece containing a hollow tubular member shaft portion at a downstream end of the die. In this example, the first hollow tubular element 4 of 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 examples given herein are illustrative embodiments of the present invention. Other embodiments of the invention are also possible. It should be understood that any feature described for any embodiment may be used alone or in combination with one or more features of any other possible embodiment or any combination of any other possible embodiments. In addition, equivalent solutions and modifications may be used without going beyond the scope of the invention as defined by its claims.

Claims (29)

1. An article for use in a non-combustion aerosol delivery system, comprising an aerosol-forming material and a mouthpiece connected thereto, characterized in that the mouthpiece is a part of the article located downstream of the aerosol-forming material, and the pressure drop across the mouthpiece is at least 10 mm water Art., but less than 32 mm water. Art. 2. The article of claim 1, wherein the mouthpiece comprises an upstream end adjacent the aerosol-generating material, a downstream end remote from the aerosol-generating material, and a hollow tubular element formed from a fiber tow at the downstream end. along the flow end of the mouthpiece. 3. Product according to claim 2, characterized in that the hollow tubular element has a minimum wall thickness of more than 0.9 mm. 4. Product according to any one of paragraphs. 2 or 3, characterized in that the density of the hollow tubular element is from 0.25 to 0.75 g/cm ³ , or from 0.25 to 0.65 g/cm ³ , or from 0.35 to 0.65 g /cm ³ . 5. Product according to any one of paragraphs. 2-4, characterized in that the fiber tow of the mouthpiece has a total denier of less than 45,000. 6. Product according to any one of paragraphs. 2-5, characterized in that the fiber tow of the mouthpiece has more than 3 denier per thread. 7. Product according to any one of paragraphs. 2-6, characterized in that the inner diameter of the hollow tubular element is more than 3.0 mm or more than 3.5 mm. 8. Product according to any one of paragraphs. 2-7, characterized in that the hollow tubular element includes a first hollow tubular element, and the mouthpiece includes a second hollow tubular element located upstream of the first hollow tubular element. 9. Product according to any one of paragraphs. 1-8, characterized in that its outer circumference ranges from 19 to 23 mm. 10. Product according to any one of paragraphs. 1-9, characterized in that the level of ventilation of the mouthpiece is from 50 to 80% of the aerosol drawn through the product. 11. Product according to any one of paragraphs. 1-10, characterized in that the mouthpiece contains a body of material. 12. Product according to claim 11, characterized in that the body of the material contains a fiber tow. 13. Product according to claim 12, characterized in that the fiber tow of the material body has from 7 to 12 denier per thread. 14. Product according to any one of claims 12 or 13, characterized in that the fiber tow of the body of the material has a total denier of 10,000 to 14,000. 15. Product according to any one of paragraphs. 11-14, characterized in that the body of the material has the shape of a cylinder having a longitudinal axis, and the product contains a capsule built into the body of the material so that the capsule is surrounded on all sides by the material forming the body, while the capsule has a shell surrounding a liquid modifying aerosol agent, and the largest cross-sectional area of the capsule perpendicular to the longitudinal axis is less than 28% of the cross-sectional area of the body of the material perpendicular to the longitudinal axis. 16. Product according to any one of paragraphs. 1-15, characterized in that it contains a wrapper. 17. Product according to claim 16, characterized in that the wrapper surrounds the aerosol-forming material. 18. Product according to claim 17, characterized in that the wrapper has a permeability of less than 100, 80, 60 or 20 Coresta units. 19. Product according to any one of paragraphs. 17 or 18, characterized in that the wrapper contains a metal layer. 20. The product according to claim 16, characterized in that it contains an aerosol-modifying additive. 21. Product according to any one of paragraphs. 1-20, characterized in that the aerosol-forming material contains reconstituted tobacco material with a density of less than 700 milligrams per cubic centimeter, or reconstituted tobacco material with a density of less than 600 milligrams per cubic centimeter. 22. Product according to any one of paragraphs. 1-21, characterized in that the aerosol-forming material contains a tobacco component, including leaf tobacco in an amount from 10 to 90% by weight of the tobacco component, and the leaf tobacco has a nicotine content of more than 1.5% by weight of the leaf tobacco. 23. The product according to claim 22, characterized in that the tobacco leaf contains at least a portion of the aerosol-forming material in an amount not exceeding 10% by weight of the leaf tobacco, and the tobacco component contains said aerosol-forming material in an amount of from 10 to 30% by weight weight of the tobacco component. 24. Product according to any one of paragraphs. 1-23, wherein the aerosol-forming material comprises an aerosol-forming material, wherein the aerosol-forming material contains at least 5% by weight of the aerosol-forming material. 25. Product according to any one of paragraphs. 1-24, characterized in that the mouthpiece contains a cavity having an internal volume of more than 450 mm ³ . 26. Product according to any one of paragraphs. 1-25, characterized in that the pressure drop across the mouthpiece is greater than or equal to 15 mm of water. Art. 27. A system containing a product according to any one of paragraphs. 1-26 and a non-combustion aerosol providing device for heating the aerosol-forming material of the product. 28. The system of claim 27, wherein the non-combustion aerosol providing device comprises a coil. 29. The system according to any one of paragraphs. 27 or 28, in which the device for providing an aerosol without combustion is configured to heat the aerosol-forming material of the product to a temperature of at least 160, 200, 220, 240 or 270°C.