KR20220116533A - Components for use in an aerosol delivery system - Google Patents

Abstract

A component for use in a non-flammable aerosol delivery system comprises an inner body 11 comprising a first material and an outer body 12 comprising a second material, the outer body surrounding the inner body. The resistance to gas flow through the length of the inner body is less than the resistance to gas flow through the length of the outer body. Also provided is an article for use with a non-flammable aerosol providing device, the article comprising an aerosol generating material comprising as a component at least one aerosol-forming material. A manufacturing method is also described.

Description

Components for use in an aerosol delivery system

The following relates to a component for use in a non-flammable aerosol providing system, an article for use with a non-flammable aerosol providing device, and a method of making the component for use in a non-flammable aerosol providing system.

Certain tobacco industry products generate aerosols that are inhaled by users during use. For example, tobacco heating devices heat an aerosol-generating substrate, such as a cigarette, to form an aerosol by heating but not burning the substrate. These tobacco industry products include mouthpieces through which the aerosol passes to reach the user's mouth.

According to some embodiments described herein, in a first aspect, there is provided a component for use in a non-combustible aerosol delivery system, the component comprising an inner body comprising a first material, and a second material an outer body, the outer body surrounding the inner body. The resistance to gas flow through the length of the inner body is less than the resistance to gas flow through the length of the outer body.

According to some embodiments described herein, in a second aspect, there is provided an article for use with a non-flammable aerosol providing device, the article comprising: an aerosol generating material comprising at least one aerosol-forming material; and a component according to the first aspect.

According to some embodiments described herein, in a third aspect, there is provided a method of manufacturing a component for use in a non-combustible aerosol delivery system, the method comprising: forming an inner body; and forming an outer body surrounding the inner body. The resistance to gas flow through the length of the inner body is less than the resistance to gas flow through the length of the outer body.

According to some embodiments described herein, there is provided a non-combustible aerosol dispensing system comprising an article according to the second aspect and a non-flammable aerosol dispensing device.

Embodiments of the present invention will now be described by way of example only with reference to the accompanying drawings.
1A is a cross-sectional side view of a component for use in a non-flammable aerosol delivery system;
1B is an end cross-sectional view of the component shown in FIG. 1A ;
FIG. 2 is a cross-sectional side view of an article for use with a non-flammable aerosol providing device, the article comprising the components shown in FIGS. 1A and 1B ;
3 is a perspective view of a non-flammable aerosol providing device for generating an aerosol from the aerosol generating material of the article of FIG. 2 ;
4 illustrates the device of FIG. 3 with the outer cover removed and no articles present.
FIG. 5 is a side view in partial cross-section of the device of FIG. 3 ;
Fig. 6 is an exploded view of the device of Fig. 5 with the outer cover omitted;
7A is a cross-sectional view of a portion of the device of FIG. 3 ;
FIG. 7B is an enlarged view of an area of the device of FIG. 7A ;
8 is a flow diagram illustrating a method of manufacturing a component for use in a non-flammable aerosol delivery system.

As used herein, the term “delivery system” is intended to include systems that deliver at least one substance to a user and includes:

Combustible aerosol delivery systems, for example, for cigarettes, cigarillos, cigars, and pipes, roll-your-own or homemade Tobacco for (make-your-own) cigarettes (whether based on tobacco, tobacco derivatives, puffed tobacco, reconstituted tobacco, tobacco substitutes or other smokeable materials);

Non-combustible aerosol delivery systems that release compounds from an aerosol-generating material without combusting the aerosol-generating material, such as electronic cigarettes, tobacco heating products, and hybrids for generating an aerosol using a combination of aerosol-generating materials hybrid systems; and

at least one substance without forming an aerosol, including but not limited to lozenges, gums, patches, and oral products such as, but not limited to, inhalable powders and oral tobacco containing snus or moist snuff. Aerosol-free delivery systems that deliver orally, nasally, transdermally or otherwise to a user, wherein the at least one substance may or may not include nicotine.

According to the present disclosure, a “flammable” aerosol delivery system is one in which a component aerosol generating material of the aerosol delivery system (or a component thereof) is combusted during use to facilitate delivery of at least one substance to a user. ) or a burned system.

In accordance with the present disclosure, a “non-combustible” aerosol delivery system comprises a component aerosol generating material of an aerosol delivery system (or a component thereof) to facilitate delivery of at least one substance to a user. It is a system that is neither combusted nor burned.

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

In some embodiments, the non-flammable aerosol delivery system may be an electronic cigarette, also known as a vaping device or electronic nicotine delivery system (END), although the presence of nicotine in the aerosol generating material is not a prerequisite. point should be noted.

In some embodiments, the non-combustible aerosol providing system is an aerosol generating material heating system, also known as a heat-not-burn system. One example of such a system is a cigarette heating system.

In one embodiment, the non-flammable aerosol delivery system is a hybrid system that generates an aerosol using a combination of aerosolable materials, one or more of which can be heated. Each of the aerosolable materials may be, for example, in the form of a solid, liquid or gel, and may or may not retain nicotine. In one embodiment, the hybrid system comprises a liquid or gel aerosolable material and a solid aerosolable material. Solid aerosol-capable materials may include, for example, tobacco or non-tobacco products.

Typically, a non-flammable aerosol providing system may include a non-flammable aerosol providing device and a consumable for use with the non-flammable aerosol providing device.

In some embodiments, the present disclosure relates to consumables comprising an aerosol generating material and configured for use with non-flammable aerosol providing devices. These consumables are sometimes referred to as articles throughout this disclosure.

A consumable is an article comprising or constituting an aerosol generating material, some or all of which is intended to be consumed during use by a user. The consumable may include one or more other components, such as an aerosol generating material storage area, an aerosol generating material delivery component, an aerosol generating area, a housing, a wrapper, a mouthpiece, a filter and/or an aerosol modifier. The consumable may also include an aerosol generator, such as a heater, that emits heat such that the aerosol generating material generates an aerosol in use. The heater may include, for example, a combustible material, a material heatable by electrical conduction, or a susceptor.

In some embodiments, a non-flammable aerosol providing system, such as its non-flammable aerosol providing device, may include a power source and a controller. The power source may be, for example, an electric power source or an exothermic power source. In some embodiments, the exothermic power source comprises a carbon substrate capable of supplying energy to distribute power in the form of heat to an aerosol generating material or a heat transfer material proximate to the exothermic power source.

In some embodiments, a non-flammable aerosol delivery system may include an area for receiving a consumable, an aerosol generator, an aerosol generating area, a housing, a mouthpiece, a filter, and/or an aerosol modifier.

In some embodiments, a consumable for use with a non-flammable aerosol providing device is an aerosol generating material, an aerosol generating material storage area, an aerosol generating material delivery component, an aerosol generator, an aerosol generating area, a housing, a wrapper, a filter, a mouthpiece and/or an aerosol modifier.

In some embodiments, the substance to be delivered may be an aerosol generating material or a material not intended to be aerosolized. Where appropriate, both materials may include one or more active ingredients, one or more flavors, one or more aerosol former materials, and/or one or more other functional materials.

An aerosol generator is a device configured to generate an aerosol from an aerosol generating material. In some embodiments, the aerosol generator is a heater configured to apply thermal energy to the aerosol-generating material to release one or more volatile substances from the aerosol-generating material to form an aerosol. In some embodiments, the aerosol generator is configured to cause an aerosol to be generated from the aerosol generating material without heating. For example, the aerosol generator may be configured to apply one or more of vibration, increased pressure, or electrostatic energy to the aerosol generating material.

An aerosol generating material is a material capable of generating an aerosol when energized, for example by heating, irradiating or otherwise. The aerosol generating material may be, for example, in the form of a solid, liquid or gel, which may or may not retain active substance and/or flavoring agents. In some embodiments, the aerosol generating material may comprise an “amorphous solid”, which may alternatively be referred to as a “monolithic solid” (ie, non-fibrous). In some embodiments, the amorphous solid may be a dried gel. An amorphous solid is a solid material capable of holding some fluid, such as a liquid, therein. In some embodiments, the aerosol generating material may comprise, for example, from about 50 wt %, 60 wt %, or 70 wt % amorphous solids to about 90 wt %, 95 wt % or 100 wt % amorphous solids.

The aerosol generating material may comprise one or more active substances and/or flavors, one or more aerosol former materials, and optionally one or more other functional materials.

The aerosol former material may comprise one or more components capable of forming an aerosol. In some embodiments, the aerosol former material is glycerin, glycerol, propylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, 1,3-butylene glycol, erythritol, meso-erythritol, ethyl vanillate in ethyl laurate, diethyl subrate, triethyl citrate, triacetin, diacetin mixture, benzyl benzoate, benzyl phenyl acetate, tributyrine, lauryl acetate, lauric acid, myristic acid, and propylene carbonate It may include more than one.

The one or more other functional materials may include one or more of pH adjusters, colorants, preservatives, binders, fillers, stabilizers, and/or antioxidants.

A material may be present on or within a support to form a substrate. The support may be or include, for example, paper, card, paperboard, cardboard, reconstituted material, plastic material, ceramic material, composite material, glass, metal, or metal alloy. can In some embodiments, the support comprises a susceptor. In some embodiments, the susceptor is embedded within the material. In some alternative embodiments, the susceptor is on one or both sides of the material.

Aerosol modifiers are substances, typically located downstream of the aerosol generating region, configured to modify the aerosol generated, for example, by altering the taste, flavor, acidity or other properties of the aerosol. The aerosol modifier may be provided in an aerosol modifier releasing component that is operable to selectively release the aerosol modifier.

The aerosol modifier may be, for example, an additive or an adsorbent. Aerosol modifiers may include, for example, one or more of flavoring agents, colorants, water and carbon adsorbents. The aerosol modifier may be, for example, a solid, liquid or gel. The aerosol modifier may be in powder, thread or granular form. The aerosol modifier may be free of filtration material.

A susceptor is a material that can be heated by penetration by a changing magnetic field, such as an alternating magnetic field. The susceptor may be an electrically conductive material, such that its penetration by a changing magnetic field causes inductive heating of the heating material. Since the heating material may be a magnetic material, its penetration by a changing magnetic field causes magnetic hysteresis heating of the heating material. The susceptor can be both electrically conductive and magnetic, so that the susceptor can be heated by both heating devices. A device configured to generate a changing magnetic field is referred to herein as a magnetic field generator.

Induction heating is a process in which an electrically conductive object is heated by impregnating the object with a changing magnetic field. This process is described by Faraday's law of induction and Ohm's law. An induction heater may include an electromagnet and a device for passing a changing current, such as alternating current, through the electromagnet. When the electromagnet and the heated object are relatively properly positioned so that the resulting changing magnetic field generated by the electromagnet penetrates the object, one or more eddy currents are created inside the object. An object has resistance to the flow of currents. Thus, when these eddy currents are created in an object, their flow against the object's electrical resistance causes the object to heat up. This process is called Joule, ohmic or resistance heating. An object that can be inductively heated is known as a susceptor.

In one embodiment, the susceptor is in the form of a closed circuit. It has been found that when the susceptor is in closed circuit form, the magnetic coupling between the susceptor in use and the electromagnet is improved, which results in greater or improved Joule heating.

Magnetic hysteresis heating is a process in which an object made of a magnetic material is heated by impregnating the object with a changing magnetic field. A magnetic material may be considered to include many atomic-scale magnets or magnetic dipoles. When a magnetic field penetrates these materials, the magnetic dipoles align with the magnetic field. Thus, when a changing magnetic field, for example an alternating magnetic field as generated by an electromagnet, penetrates a magnetic material, the orientation of the magnetic dipoles changes with the varying magnetic field applied. This magnetic dipole reorientation causes heat generation in the magnetic material.

When an object is both electrically conductive and magnetic, penetrating the object by a changing magnetic field can cause both Joule heating and hysteresis heating in the object. Moreover, the use of magnetic materials may intensify the magnetic field, which may aggravate Joule heating.

Since, in each of the above processes, heat is generated within the object itself rather than by an external heat source by heat conduction, the rapid movement of the object, particularly through selection of suitable object materials and geometries, appropriate varying magnetic field magnitudes and orientations for the object, A temperature rise and a more uniform heat distribution can be achieved. Moreover, induction heating and magnetic hysteresis heating do not need to provide a physical connection between the source of the changing magnetic field and the object, so design freedom and control over the heating profile can be greater and the cost can be lowered.

Articles, e.g., rod-shaped articles, are often named according to product length: "regular" (typically in the range from 68 to 75 mm, e.g., in the range from about 68 mm to about 72 mm), "short" or "mini ( mini)" (68mm or less), "king-size" (typically in the range of 75-91mm, e.g., in the range of about 79mm to about 88mm), "long" or "super-king" )" (typically in the range of 91 to 105 mm, eg, in the range of about 94 mm to about 101 mm) and "very-long" (typically in the range of about 110 mm to about 121 mm).

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

Thus, a king-size, super-slim type article would, for example, have a length of about 83 mm and a circumference of about 17 mm.

Each type can be made with mouthpieces of different lengths. The mouthpiece length will be between about 30 mm and 50 mm. The tipping paper connects the mouthpiece to the aerosol generating material and will generally have a longer length than the mouthpiece, for example 3 mm to 10 mm longer, so that the tipping paper covers the mouthpiece, and yes It is overlapped with the aerosol generating material, for example in the form of a rod of base material, to connect the mouthpiece to the rod.

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

As used herein, the terms 'upstream' and 'downstream' are relative terms defined for the direction of the mainstream aerosol drawn through the article or device in use.

The filamentary tow material described herein may comprise a cellulose acetate fiber tow. In addition, the filament tow is polyvinyl alcohol (PVOH), polylactic acid (PLA), polycaprolactone (PCL), poly(1-4 butanediol succinate) (poly(1- 4 butanediol succinate)) (PBS), poly(butylene adipate-co-terephthalate) (PBAT), starch based materials, cotton, aliphatic polyester materials and polysaccharides It may be formed using other materials used to form the fibers, such as polymers or combinations thereof. The filament tow may be plasticized with a plasticizer suitable for the tow, such as triacetin, if the material is cellulose acetate tow, or the tow may not be plasticized. The tow may have any suitable specification, such as fibers having a cross-section that is a 'Y' shape, an 'X' shape or an 'O' shape. The fibers of the tow may have filamentary denier values of 2.5 to 15 denier per filament, such as 8.0 to 11.0 denier per filament, and total denier values of 5,000 to 50,000, such as 10,000 to 40,000. have. The cross-section of the fibers may have an isoperimetric ratio L2/A of 25 or less, 20 or less, or 15 or less, where L is the length of the cross-section perimeter and A is the cross-sectional area. These fibers have a relatively low surface area for a given denier per filament value, which improves the delivery of the aerosol to the consumer. The filter materials described herein also include cellulosic materials such as paper. Such materials may have a relatively low density, such as from about 0.1 to about 0.45 grams per cubic centimeter, to allow air and/or aerosol to pass through the material. Although described as filter materials, these materials may have a primary purpose, such as increasing a component's resistance to suction, but per se are not relevant to filtration.

As used herein, the term “tobacco material” refers to any material, including tobacco or derivatives thereof or substitutes thereof. The term “tobacco material” may include one or more of tobacco, tobacco derivatives, puffed tobacco, reconstituted tobacco or tobacco substitutes. The tobacco material may comprise one or more of ground tobacco, tobacco fiber, chopped tobacco, extruded tobacco, tobacco stem, tobacco lamina, reconstituted tobacco and/or tobacco extract.

In some embodiments, the substance to be delivered comprises an active substance.

As used herein, an active substance may be a physiologically active material, which is a material intended to achieve or enhance a physiological response. The active substance may be selected, for example, from nutraceuticals, nootropics, and psychoactives. The active substances may occur naturally or may be obtained synthetically. The active substance may be, for example, nicotine, caffeine, taurine, theine, vitamins such as B6 or B12 or C, melatonin, cannabinoids, or components, derivatives thereof, or Combinations may be included. The active substance may comprise one or more components, derivatives or extracts of tobacco or other botanical.

In some embodiments, the active substance comprises nicotine. In some embodiments, the active substance comprises caffeine, melatonin or vitamin B12.

As noted herein, an active substance may include or be derived from one or more herbal medicines or components, derivatives or extracts thereof. As used herein, the term "herbal herbal medicine" refers to extracts, leaves, bark, fibers, stems, roots, seeds, flowers, fruits, pollen, husk. , shells, and the like, including any material derived from plants. Alternatively, this material may contain an active compound naturally present in the synthetically obtained herbal medicine. This material may be in the form of liquid, gas, solid, powder, dust, pulverized particles, granules, pellets, shreds, strips, sheets, and the like. Examples of herbal medicines include tobacco, eucalyptus, star anise, hemp, cocoa, cannabis, fennel, lemongrass, peppermint, spearmint, rooibos, chamomile, flax ), ginger, ginkgo biloba, hazel, hibiscus, laurel, licorice (licorice), matcha, mate, orange skin ), papaya, rose, sage, tea (such as green or black tea), thyme, cloves, cinnamon, coffee, aniseed (anise), basil, bay leaf (bay leaves), cardamom, coriander, cumin, nutmeg, oregano, paprika, rosemary, saffron, lavender, lemon peel, mint, juniper, elder Elderflower, vanilla, wintergreen, beefsteak plant, curcuma, turmeric, sandalwood, cilantro, bergamot, orange blossom Blossom, myrtle, cassis, valerian, pimento, mace, damien, marjoram, olive, lemon balm ), lemon basil, chive, carvi, verbena, tarragon, geranium, mulberry, ginseng, theanine, theacrine ( theacrine, maca, ashwagandha, damiana, guarana, chlorophyll yll), baobab, or any combination thereof. The mint may be selected from the following mint varieties. Mentha arvensis, Mentha c.v., Mentha niliaca, Mentha piperita, Mentha piperita citrata c.v. (Mentha piperita c.v.), Mentha spicata crispa, Mentha cordifolia, Mentha longifolia, Mentha suaveolens variegata, Mentha Mentha pulegium), Mentha spicata c.v. and Mentha suaveolens.

In some embodiments, the active substance comprises or is derived from one or more herbal medicines or components, derivatives or extracts thereof, and the herbal medicine is tobacco.

In some embodiments, the active substance comprises or is derived from one or more herbal medicines or components, derivatives or extracts thereof, wherein the herbal medicine is selected from eucalyptus, octagonal, cocoa and hemp.

In some embodiments, the active substance comprises or is derived from one or more herbal medicines or components, derivatives or extracts thereof, and the herbal medicine is selected from rooibos and fennel.

In some embodiments, the substance to be delivered comprises a flavor.

As used herein, the terms "flavour" and "flavourant" refer to a desired taste, aroma ( Refers to materials that can be used to produce aroma) or other somatosensorial sensations. These include naturally occurring flavoring materials, herbal medicinals, extracts of herbal medicinals, synthetically obtained materials or combinations thereof (eg, tobacco, cannabis, licorice (licorice candies), hydrangea). , eugenol, Japanese white bark magnolia leaf, chamomile, fenugreek, cloves, maple, matcha, menthol, Japanese mint, anise Anise, cinnamon, turmeric, Indian spices, Asian spices, herbs, hepatica, cherry, berry, red berry, cranberry, peach, apple, orange, Mango, Clementine, Lemon, Lime, Tropical Fruit, Papaya, Rhubarb, Grape, Durian, Dragon Fruit, Cucumber, Blueberry, Mulberry, Citrus fruits, Drambuie, Bourbon bourbon, scotch, whiskey, gin, tequila, rum, spearmint, peppermint, lavender, aloe vera, cardamom, celery, cascarilla ), nutmeg, sandalwood, bergamot, geranium, khat, naswar, betel, shisha, pine, honey essence, rose oil ( rose oil, vanilla, lemon oil, orange oil, orange blossom, cherry blossom, cassia, caraway, cognac, jasmine, ylang-ylang ), sage, fennel, wasabi, pepper, ginger, coriander, coffee, hemp, mint oil from any species of the genus Mentha, eucalyptus, octagonal, cocoa, lemongrass, rooibo sage, flax, ginkgo, hazel, hibiscus, laurel, mate, orange peel, rose, tea (such as green or black tea), thyme, juniper, elderflower, basil, bay leaf, cumin, oregano , paprika, rosemary, saffron, lemon peel, mint, perilla, turmeric, coriander, myrtle, cassis, valerian, pimento, mace, damian, marjoram, olive, lemon balm, lemon basil, chive, carbi , verbena, tarragon, limonene, thymol, camphene), flavor enhancers, bitterness receptor site blockers, sensorial receptor site activators or stimulators, sugars and/or sugar substitutes (eg sucralose, acesulfame potassium, aspartame, saccharine, cyclamates) (cyclamates), lactose, sucrose, glucose, fructose, sorbitol or mannitol), and other additives such as charcoal, chlorophyll, minerals, Herbal medicines or breath freshening agents may be included. These may be imitation, synthetic or natural ingredients or blends thereof. They may be in any suitable form, for example a liquid such as an oil, a solid such as a powder or a gas.

In some embodiments, the flavor comprises menthol, spearmint and/or peppermint. In some embodiments, the flavor includes flavoring ingredients of cucumber, blueberry, citrus and/or redberry. In some embodiments, the flavor comprises eugenol. In some embodiments, the flavor comprises flavor ingredients extracted from tobacco. In some embodiments, the flavor comprises flavor ingredients extracted from cannabis.

In some embodiments, flavor is a sensation intended to achieve a somatosensory sensation that is normally chemically induced and perceived by stimulation of the fifth cranial nerve (trigeminal nerve) in addition to or instead of smell or taste nerves. may include sensates, which may include agents that provide fever, cold, tingling, and numbing effects. A suitable exothermic agent may be, but is not limited to, vanillyl ethyl ether, and a suitable cooling agent may be, but is not limited to, eucolyptol, WS-3.

In the drawings described herein, like reference numbers are used to illustrate equivalent features, articles, or components.

1A is a cross-sectional side view of a component for use in a non-flammable aerosol delivery system; In this example and other examples described herein, the component is a component of a non-combustible aerosol delivery system, eg, a component of a tobacco heating product. FIG. 1B is an end cross-sectional view through line A-A′ of the component shown in FIG. 1A .

Component 10 includes an inner body 11 and an outer body 12 surrounding the inner body. The inner body 11 comprises a first material and the outer body 12 comprises a second material. The resistance to gas flow through the length of the inner body 11 is less than the resistance to gas flow through the length of the outer body 12 . This arrangement allows for increased gas flow through the inner body 11 compared to the outer body 12 . During use, the aerosol generated by the non-flammable aerosol delivery system is thereby caused to flow away from the user's lips.

In some examples, component 10 may be a mouthpiece for an article used with a non-flammable aerosol providing device. This is explained in more detail below with respect to FIG. 2 .

In some examples, the resistance to gas flow (pressure drop) through the length of the inner body 11 is less than about 30 mmH ₂ O. It has been found that these pressure drops allow sufficient aerosol containing the desired compounds, such as flavor compounds, to be delivered to the user through the inner body 11 . In some examples, the resistance to gas flow through the length of the inner body 11 is less than about 25 mmH ₂ O.

Alternatively or additionally, the resistance to gas flow through the length of the inner body 11 may be at least 10 mmH ₂ O, in some examples at least 15 mmH ₂ O, and in some examples at least 20 mmH ₂ O. In some examples, the resistance to gas flow through the length of the inner body 11 may be between about 5 mmH ₂ O and 30 mmH ₂ O.

The resistance to gas flow through the length of the outer body 12 may be at least 50 mmH ₂ O, in some examples at least 55 mmH ₂ O, and in some examples at least 60 mmH ₂ O. In some examples, the resistance to gas flow through the length of the inner body 11 may be between about 40 mmH ₂ O and 60 mmH ₂ O.

In this example, the inner body 11 is cylindrical and the outer body 12 is tubular. The tubular outer body 12 includes a hollow cavity extending through the outer body 12 . The inner body 11 is disposed within the cavity of the outer body 12 , such that the outer body 12 surrounds the inner body 11 . In this example, the inner body 11 and the outer body 12 have substantially the same length, and are arranged such that the longitudinal end surfaces of the inner body 11 and the outer body 12 are flush with each other. The inner body 11 and the outer body 12 share a common longitudinal axis.

In this example, the inner body 11 and the outer body 12 are integrally formed as a single material body. In some examples, the inner body and the outer body are formed as separate material bodies secured together using, for example, an adhesive.

In some examples, inner body 11 and/or outer body 12 may be formed from a filamentous tow, such as a cellulose acetate tow. The density of the filament tows forming the inner body 11 is lower than the density of the filament tows forming the outer body 12 . This results in that the resistance to gas flow through the length of the inner body 11 is less than the resistance to gas flow through the length of the outer body 12 . The density of the filament tow can be adjusted by selecting the total denier of the filament tow for a given cross-sectional area. This will be explained in more detail below.

In this example, both inner body 11 and outer body 12 are formed from plasticized cellulose acetate tow. In other examples, inner body 11 and/or outer body 12 may be tows other than cellulose acetate, such as polylactic acid (PLA), other materials described herein for filament tow, filter material or It can be formed from similar materials.

In some examples, the density of the material forming the inner body 11 is at least about 0.1 grams per cubic centimeter (g/cc), and in some instances at least about 0.15 g/cc. In some examples, the density of the material forming the inner body 11 is less than about 0.2 grams per cubic centimeter (g/cc), and in some instances less than 0.25 g/cc. In some examples, the density of the material forming the inner body 11 is between 0.1 and 0.25 g/cc, in some instances between 0.1 g/cc and 0.15 g/cc, or between 0.15 g/cc and 0.2 g/cc. It has been found that these densities provide a good balance between the improved rigidity provided by the denser material and the lower heat transfer properties of the lower density material. In examples in which the inner body is formed of filament tow, the “density” of the inner body 11 refers to the density of the filament tow forming the body with any plasticizer incorporated. The density may be determined by dividing the total weight of the inner body 11 by the total volume of the inner body 11 .

In this example, the tow used for the inner body 11 has a denier per filament (d.p.f.) of 8.4 and a total denier of 7,500. The plasticizer used in the tow comprises about 7% by weight of the tow. In this example, the plasticizer is triacetin. In some examples, the tow, whether formed of cellulose acetate or of other materials, has a d.p.f. of at least 5, in some instances at least 6, and in some instances at least 7. These denier per filament values provide a tow with relatively coarse and thick fibers with a low surface area, which results in a lower d.p.f. resulting in a lower pressure drop across the inner body 11 than tows with values. To achieve a sufficiently uniform body of material 11, the tow has a denier per filament of 12 d.p.f. Hereinafter, in some examples 11 d.p.f. Hereinafter, 10 d.p.f or less in some examples.

In some examples, the total denier of the tow forming the inner body 11 is up to 11,000, in some examples up to 10,000, and in some examples up to 9,000. These total denier values provide a tow that occupies a reduced proportion of the cross-sectional area of the inner body 11 , which results in a lower pressure drop across the inner body 11 than tows with higher total denier values. For adequate rigidity of the inner body 11 , the tow has a total denier of at least 3,000, and in some instances at least 4,000. In some examples, the denier per filament is between 5 and 12, while the total denier is between 3,000 and 9,000. In some examples, the denier per filament is between 6 and 10, while the total denier is between 4,000 and 8,000. In some examples, the cross-sectional shape of the filaments of the tow is the same d.p.f. and total denier values. The tow may include filaments having a cross-section having an isometric ratio of 25 or less, 20 or less, or 15 or less.

In some examples, the inner body 11 may comprise a capsule disposed within the material body. Capsules may include breakable capsules, eg, capsules having a hard, brittle shell surrounding a liquid payload. In some examples, a single capsule is used. The capsule is completely embedded within the material body. In other words, the capsule is completely surrounded by the material forming the body. In other examples, a plurality of breakable capsules may be disposed within the body of material, for example two, three or more breakable capsules may be disposed. The length of the body of material may be increased to accommodate the required number of capsules. In examples where multiple capsules are used, the individual capsules may be identical to each other, or may differ from each other in size and/or capsule payload. In other examples, multiple material bodies may be provided, each body holding one or more capsules.

In some embodiments, the body of material includes first and second capsules. In such embodiments, the first capsule is disposed in a first portion of the material body and the second capsule is disposed in a second portion of the material body downstream of the first portion. In other embodiments, the article comprises two material bodies, the first and second capsules being disposed on the first and second bodies, respectively.

The first capsule is heated to a first temperature during use and the second capsule is heated to a second temperature during use, wherein the second temperature is at least 4 degrees Celsius lower than the first temperature. Preferably, the second temperature is at least 5, 6, 7, 8, 9 or 10 degrees Celsius lower than the first temperature.

In some embodiments, the second capsule is spaced from the first capsule by a distance of at least 7 mm measured as the distance between the centers of the first and second capsules. Preferably, the second capsule is spaced apart from the first capsule by a distance of at least 8, 9 or 10 mm. It has been found that increasing the distance between the first and second capsules increases the temperature difference between the first and second temperatures.

The first capsule contains an aerosol modifier. The second capsule comprises an aerosol modifier, which may be the same as or different from the aerosol modifier of the first capsule. In some embodiments, the user may selectively rupture the first and second capsules by applying an external force to the capsules to release the aerosol modifier from each capsule.

The aerosol modifier in the second capsule is heated to a lower temperature than the aerosol modifier in the first capsule due to the difference between the first temperature and the second temperature. The aerosol modifiers of the first and second capsules may be selected based on this temperature difference. For example, a first capsule may comprise a first aerosol modifier having a lower vapor pressure than a second aerosol modifier in the second capsule. If the capsules were both heated to the same temperature, a higher vapor pressure of the aerosol modifier in the second capsule would mean that a greater amount of the second aerosol modifier would volatilize compared to the aerosol modifier in the first capsule. However, since the second capsule is heated to a lower temperature, this effect is less pronounced so that a more uniform amount of aerosol modifiers in the first and second capsules are volatilized when the first and second capsules are respectively broken.

In some embodiments, the first and second capsules have the same aerosol modification profiles, which means that both capsules hold the same type of aerosol modifier and the same amount, so that both capsules are heated to the same temperature and break. If so, it means that both capsules will result in the same modification of the aerosol. However, since the first capsule is heated to a higher temperature than the second capsule, a greater portion of the aerosol modifier in the first capsule will volatilize relative to, for example, the modifier in the second capsule, and thus more than the second capsule. More aerosols will result in significant modification.

Thus, despite the fact that both capsules are identical and may make it easier and/or less expensive to manufacture an aerosol modifying component, the user will determine whether the first capsule will be destroyed resulting in a more pronounced modification of the aerosol, the second It can be determined whether breaking the capsules will cause a less pronounced modification of the aerosol or breaking both capsules will result in the greatest modification of the aerosol.

In some embodiments, both the first and second capsules include first and second aerosol modifiers. The first aerosol modifier has a lower vapor pressure than the second aerosol modifier. Thus, when the second capsule is broken, a greater proportion of the second aerosol modifier will be vaporized compared to the first aerosol modifier compared to when the hotter first capsule is broken while using the system to generate an aerosol. . Thus, the same capsule may be used to generate different modifications of the aerosol based on the position of the capsule in the first or second portion of the aerosol modification component.

One or more capsules may include a core-shell structure. In other words, capsules contain a shell encapsulating a liquid formulation, for example a flavoring agent or other agent, which may be any of the flavoring agents or aerosol modifiers described herein. The shell may be ruptured by a user to release a flavor or other agent into the body of material. The first plug wrap 16' may include a barrier coating that renders the material of the plug wrap substantially impermeable to the liquid payload of the capsule. Alternatively or additionally, the second plug wrap 17 and/or tipping paper 18 may have a barrier coating that renders the material of the plug wrap and/or tipping paper substantially impermeable to the liquid payload of the capsule. may include

In some examples, the one or more capsules are spherical and have a diameter of about 3.5 mm. In other examples, other shapes and sizes of capsules may be used, for example capsules having a diameter of 2.5 mm, 3 mm, 4 mm or 4.5 mm may be used. The total weight of the one or more capsules may range from about 10 mg to about 50 mg.

For a given tow specification (eg, 8.4Y21000), it is known to generate a tow capability curve representing the pressure drop through the rod length formed using the tow for each tow weight range. Parameters such as rod length and circumference, wrapper thickness and tow plasticizer level are specified, which are combined with the tow specification to produce a tow capability curve, which is the minimum and maximum weights achievable using a standard filter rod forming machine. An indication of the pressure drop that would be provided by different tow weights between These tow capability curves may be calculated using, for example, software provided by tow suppliers. It has been found particularly advantageous to use an inner body 11 comprising a filament tow, which is between about 10% and about 30% of the range between the minimum and maximum weights of the tow capability curve generated for the filamentary tow. phosphorus, the weight per mm of the length of the inner body 11 . This is between providing sufficient tow weight to avoid shrinkage after the inner body 11 is formed, and providing an acceptable pressure drop while assisting in capsule placement within the tow for capsules of the sizes described herein. It can provide an acceptable balance.

In some examples, the density of the material forming the hollow tubular outer body 12 is at least about 0.25 grams/cubic centimeter (g/cc), and in some examples at least about 0.3 g/cc. In some examples, the density of the hollow tubular outer body 12 is less than about 0.75 grams per cubic centimeter (g/cc), and in some instances less than 0.6 g/cc. In some examples, the density of the hollow tubular outer body 12 is 0.25 g/cc to 0.75 g/cc, in some examples 0.3 to 0.6 g/cc, in some examples 0.4 g/cc to 0.6 g/cc, or about 0.5 g /cc. It has been found that these densities provide a good balance between the improved rigidity provided by the denser material and the lower heat transfer properties of the lower density material. In examples where the outer body is formed from a filament tow, the “density” of the hollow tubular outer body 12 refers to the density of the filament tow forming the body with any plasticizer incorporated. The density can be determined by dividing the total weight of the hollow tubular outer body 12 by the total volume of the hollow tubular outer body 12, where the total volume is the appropriate weight of the hollow tubular outer body 12 taken using, for example, calipers. It can be calculated using measurements. If necessary, appropriate dimensions can be measured using a microscope.

In some examples, the filament tow forming the hollow tubular outer body 12 has a total denier of less than 45,000, and in some instances less than 42,000. It has been found that this total denier allows the formation of a tubular outer body 12 that is not too dense. In some examples, the total denier is at least 20,000, and in some examples at least 25,000. In some examples, the filament tow forming the hollow tubular outer body 12 has a total denier between 25,000 and 45,000, and in some examples between 35,000 and 45,000. In some examples, the cross-sectional shape of the filaments of the tow is a 'Y' shape, although other shapes may be used, such as 'X' shaped or 'O' shaped filaments in other examples. The tow may include filaments having a cross-section having an isometric ratio of 25 or less, 20 or less, or 15 or less.

In some examples, the filament tow forming the outer body 12 has a denier per filament greater than 3 . It has been found that this denier per filament allows the formation of an outer body 12 that is not too dense. In some examples, the denier per filament is at least 4, and in some instances at least 5. In some examples, the filament tow forming outer body 12 has a denier per filament of 4 to 10, and in some instances 4 to 9. In one example, the filament tow forming the outer body 12 has an 8Y40,000 tow formed of cellulose acetate and comprising 18% plasticizer, such as triacetin.

In some examples, the hollow tubular outer body 12 includes 15% to 22% by weight plasticizer. In the case of cellulose acetate tow, the plasticizer is preferably triacetin, although other plasticizers such as polyethylene glycol (PEG) may be used. In some examples, outer body 12 comprises 16% to 20% by weight plasticizer, for example about 17%, about 18%, or about 19% plasticizer.

In some examples, inner body 11 and/or outer body 12 may be formed of paper in a manner similar to paper filters known for use in, for example, cigarettes. In such examples, the density of the paper forming the inner body is less than the density of the paper forming the outer body to achieve a gas flow through the length of the inner body that is less than the resistance to gas flow through the length of the outer body.

In some examples, the length of the inner body 11 is less than about 15 mm. In some examples, the length of the inner body 11 is less than about 12 mm. Additionally or alternatively, the length of the inner body 11 is at least about 5 mm. In some examples, the length of the inner body 11 is at least about 6 mm. In some examples, the length of the inner body 12 is from about 5 mm to about 20 mm, in some examples from about 6 mm to about 10 mm, in some examples from about 6 mm to about 8 mm, and in some examples about 6 mm, 7 mm, or about 8 mm.

In some examples, the length of the hollow tubular outer body 12 is less than about 15 mm. In some examples, the length of the hollow tubular outer body 12 is less than about 12 mm. Additionally or alternatively, the length of the hollow tubular outer body 12 is at least about 5 mm. In some examples, the length of the hollow tubular outer body 12 is at least about 6 mm. In some examples, the length of the hollow tubular outer body 12 is about 5 mm to about 20 mm, in some examples about 6 mm to about 10 mm, in some examples about 6 mm to about 8 mm, and in some examples about 6 mm, 7 mm, or about 8 mm.

In some examples, the length of the inner body is equal to the length of the outer body. In this example, both the inner body and the outer body have a length of 10 mm.

In this example, the tubular outer body 12 has an outer circumference of about 21 mm, which is equal to an outer diameter of approximately 6.7 mm. In some examples, the hollow tubular outer body 12 has an inner diameter greater than 3.0 mm. Diameters smaller than this increase the speed of the aerosol passing through component 10 and into the user's mouth more than desired, such that the aerosol warms up too much, for example, reaching a temperature above 40°C or above 45°C. can do it In some examples, the hollow tubular outer body 12 has an inner diameter greater than 3.1 mm, and in some examples greater than 3.5 mm or 3.6 mm. In this example, the inner diameter of the hollow tubular outer body 12 is about 3.9 mm.

The “wall thickness” of the hollow tubular outer body 12 corresponds to the thickness of the wall of the outer body 12 in the radial direction. This can be measured using, for example, a caliper. The wall thickness is advantageously greater than 0.9 mm, and in some examples greater than or equal to 1.0 mm. In some examples, the wall thickness is substantially constant around the entire wall of the hollow tubular outer body 12 . However, in examples where the wall thickness is not substantially constant, the wall thickness is greater than 0.9 mm at any point around the hollow tubular outer body 12 , and in some instances is greater than or equal to 1.0 mm.

In this example, component 10 further comprises a hollow tubular element 14 . The tubular element 14 includes a hollow cavity 14a extending through the hollow tubular element 14 .

The outer body 12 and the hollow tubular element 14 each define a substantially cylindrical overall outer shape and share a common longitudinal axis. In this example, the hollow tubular element 14 is adjacent and in abutting relation to the outer body 12 . In some examples, the hollow tubular element 14 may be in abutting relationship with and adjacent to both the inner body 11 and the outer body 12 .

In the present example, the tubular element 14 is arranged to be downstream of the inner body 11 and the outer body 12 when the component 10 is incorporated into an article to be used with a non-flammable aerosol providing device. The tubular element 14 thus forms the mouth end of the component 10 . Alternatively or additionally, the tubular element may be disposed such that the component 10 is upstream of the inner body and the outer body when incorporated into an article to be used with a non-flammable aerosol providing device.

The tubular element 14 may be substantially identical to the hollow tubular outer body 12 and may have any of the dimensions mentioned above with respect to the hollow tubular outer body 12 .

In this example, the tubular element 14 has a length of 6 mm. In some examples, it may be particularly advantageous to use a hollow tubular element 14 having a length greater than about 10 mm, for example from about 10 mm to about 30 mm, or from about 12 mm to about 25 mm. The consumer's lips are likely to extend to about 12 mm from the mouth end of the article 1 in some cases when aspirating the aerosol through the article 1 , so that the hollow tubular element 14 is therefore at least 10 mm or at least 12 mm wide. It has been found that having a length means that most of the consumer's lips surround this element 14 .

In this example, the component 10 includes an outer body 12 and a plug wrap 18 that wraps around the tubular body 14 . In some examples, the plug wrap 18 has a basis weight of less than 50 gsm, and in some examples between about 20 gsm and 40 gsm. In some examples, the plug wrap 18 has a thickness between 30 μm and 60 μm, and in some examples between 35 μm and 45 μm. In some examples, the plug wrap 18 is a non-porous plug wrap having, for example, a permeability of less than 100 Coresta units, such as less than 50 Coresta units. However, in other examples, the plug wrap 18 may be a porous plug wrap having a permeability of, for example, greater than 200 Coresta units.

In some examples, component 10 includes an additional plug wrap (not shown) that is wrapped around inner body 11 . In some examples, the additional plug wrap has a basis weight of less than 50 gsm, and in some examples between about 20 gsm and 40 gsm. In some examples, the additional plug wrap has a thickness of 30 μm to 60 μm, and in some examples 35 μm to 45 μm. In some examples, the additional plug wrap is, for example, a non-porous plug wrap having a permeability of less than 100 Coresta units, such as less than 50 Coresta units. However, in other examples, the additional plug wrap may be, for example, a porous plug wrap having a permeability of greater than 200 Coresta units.

2 is a cross-sectional side view of an article for use with a non-flammable aerosol providing device. In this example, the article 1 includes the component 10 shown in FIGS. 1A and 1B . Component 10 serves as a mouthpiece of article 1 and defines a mouth end of article 1 .

The article 1 comprises a cylindrical rod of aerosol generating material 21 , in this case tobacco material; a hollow tubular element 23 disposed downstream of the aerosol generating material 21 ; and a mouthpiece 10 disposed downstream of the tubular element 23 . Mouthpiece 10 comprising an inner body 11 and an outer body 12 provides improved insulation between the aerosol and the user's lips over a standard cellulose acetate plug without increasing the overall length of the article 1 . .

In this example, the aerosol generating material 21 is wrapped in a wrapper 22 . The wrapper 22 may be, for example, a paper or paper-backed foil wrapper.

The wrapper 22 has a high level of permeability, in some instances greater than about 1000 Coresta units, in some instances greater than about 1500 Coresta units, or in some instances greater than about 2000 Coresta units. The wrapper 22 may have a maximum permeability of less than about 20000 Coresta units, in some instances less than about 15000 Coresta units, or in some instances less than about 5000 Coresta units. The permeability of the wrapper 22 may be measured according to ISO 2965:2009 for the determination of air permeability to materials used as cigarette papers, filter plug wraps and filter binding papers.

The wrapper 22 may be formed of a material having a high intrinsic level of permeability, an essentially porous material, or any intrinsic level of permeability provided that the final level of permeability is achieved by providing a permeable zone or region to the wrapper 22 . It may be formed of a material having Where the wrapper 22 is provided with a transmissive zone, the transmissive zone may be a separate area, or the transmissive zone may extend substantially throughout the wrapper 22 . For example, the wrapper 22 may be provided with discrete bands of vent perforations, or the wrapper may be provided with vent perforations extending substantially across and around the entire wrapper 22 . The wrapper 22 may be provided with ventilation perforations in any configuration to achieve a final level of permeability. The percentage of surface area of the wrapper having the permeability level described herein may be greater than 50%, greater than 75%, greater than 90%, or 100%.

In this example, ventilation is provided directly into the tubular element 23 via the ventilation area 24 . In the present example, the vent area 24 is at positions 17.925 mm and 18.625 mm, respectively, from the mouth-end downstream of the mouthpiece 10 , in this case formed of laser perforations, in first and second parallel rows. including perforations. These perforations pass through the tipping paper 28 and the hollow tubular element 23 . Alternatively, ventilation may be provided through a single row of perforations into the tubular element, for example laser perforations. This has been found to improve aerosol formation, which is thought to be the result of airflow through more uniform perforations than multiple rows of perforations for a given level of ventilation.

In use, when the user draws air through the article 1 , the air enters the article 1 through the perforations 24 . Ventilation region 24 provides the article with a level of ventilation that is less than 50% of the air drawn through the article. In some examples, the article may have a ventilation level of 50% to 80%, such as 45% to 65% of the aerosol drawn through the article. Ventilation at these levels helps to slow the flow of aerosol drawn through the article 1 , thereby allowing the aerosol to cool sufficiently before reaching the downstream end of the article 1 .

It has been found that aerosol temperature generally increases with lower aeration levels. However, the relationship between aerosol temperature and aeration level does not appear to be linear and has little effect on lower target aeration levels due to, for example, variations in ventilation due to manufacturing tolerances. For example, if the ventilation tolerance is ±15% and the target aeration level is 75%, the aerosol temperature may increase by about 6°C at the lower aeration limit (60% ventilation). However, if the target aeration level is 60%, the aerosol temperature may increase by only about 3.5°C at the lower aeration limit (45% aeration). Accordingly, the target ventilation level of the article may be in the range of 40% to 70%, such as 45% to 65%. For example, the average ventilation level of the at least 20 articles may be between 40% and 70%, such as between 45% and 70% or between 51% and 59%.

Providing the permeable wrapper 22 provides a route for air to enter the article 1 . In some examples, the wrapper 22 is permeable such that the amount of air entering the article through the rod of aerosol generating material is relatively greater than the amount of air entering the article through the ventilation region 24 in the tubular element 23 . This can be provided. An article having such an arrangement can generate a more palatable aerosol that is more pleasing to the user.

Article 1 includes a cavity having an interior volume greater than 450 mm 3 . It has been found that providing a cavity of at least this volume allows for improved aerosol formation. This cavity size provides sufficient space within the article 1 to allow the heated volatilized components to cool, and thus the aerosol generating material at higher temperatures than would otherwise be possible as these may generate an aerosol that is too warm. (21) to be exposed.

In the present example, the cavity is a cavity 23a formed in the hollow tubular element 23 , however, in alternative arrangements the cavity may be formed in a different part of the article 1 . In some examples, the article 1 comprises a cavity 23a formed, for example, in the hollow tubular element 23 , the cavity having an internal volume greater than 500 mm 3 and in some instances greater than 550 mm 3 , so that the addition of the aerosol Allow for improvement. In some examples, the interior cavity comprises a volume from about 550 mm 3 to about 750 mm 3 , such as about 600 mm 3 or 700 mm 3 .

In this example, the hollow tubular element 23 is immediately upstream of and adjacent the inner body 11 and the outer body 12 . The hollow tubular element 23 , the outer body 12 and the tubular body 14 each define an overall substantially cylindrical outer shape and share a common longitudinal axis.

In this example, the hollow tubular element 23 is formed of a plurality of paper layers wound in parallel, with butted seams, to form the tubular element 23 . In this example, the first and second paper layers are provided as two ply tubes, but in other examples three, four or more paper layers may be used to form three, four or more ply tubes. . Other structures may be used, such as spirally wound paper layers, cardboard tubes, tubes formed using a Papie Mace type process, molded or extruded plastic tubes or the like.

Hollow tubular element 23 may be formed using, for example, rigid plug wrap and/or tipping paper as plug wrap 18 and/or tipping paper 28, which indicates that a separate tubular element is not required. it means. The rigid plug wrap and/or tipping paper is manufactured to have sufficient stiffness to withstand the axial compressive forces and bending moments that may occur during manufacture and while the article 1 is in use. For example, the rigid plug wrap and/or tipping paper may have a basis weight of 70 gsm to 120 gsm, and in some instances 80 gsm to 110 gsm. Additionally or alternatively, the rigid plug wrap and/or tipping paper may have a thickness of 80 μm to 200 μm, in some examples 100 μm to 160 μm, or 120 μm to 150 μm.

The tubular element 23 preferably has a wall thickness of at least about 325 μm and at most about 2 mm, preferably between 500 μm and 1.5 mm, more preferably between 750 μm and 1 mm. In this example, the tubular element 23 has a wall thickness of about 1 mm. The “wall thickness” of the tubular element 23 corresponds to the radial wall thickness of the tubular element 23 . This can be measured using, for example, a caliper.

In some embodiments, the thickness of the wall of the tubular element is at least 325 microns, and preferably at least 400, 500, 600, 700, 800, 900 or 1000 microns. In some embodiments, the thickness of the wall of the tubular element is at least 1250 or 1500 microns.

In some embodiments, the thickness of the wall of the tubular element is less than 2000 microns, preferably less than 1500 microns.

The increased thickness of the wall of the tubular element means that it has a greater thermal mass, which reduces the temperature of the aerosol passing through the tubular element and reduces the surface temperature of the article at locations downstream of the tubular element. has been found to help This is believed to be because the greater thermal mass of the tubular element allows the tubular element to absorb more heat from the aerosol compared to a tubular element with a thinner wall thickness. In addition, the increased thickness of the tubular element allows the aerosol to flow centrally inside the article, such that less heat from the aerosol is transferred to outer parts of the article, such as external parts of the body of material.

In some embodiments, the permeability of the wall material of the tubular element is at least 100 Coresta units, and preferably at least 500 or 1000 Coresta units.

The relatively high permeability of the tubular element has been found to increase the amount of heat transferred from the aerosol to the tubular element and thus decrease the temperature of the aerosol. The permeability of the tubular element has also been shown to increase the amount of moisture transferred from the aerosol to the tubular element, which has been shown to improve the feel of the aerosol in the user's mouth. The high permeability of the tubular part also makes it easier to use a laser to cut the vent holes, meaning that a lower power laser can be used.

In some examples, the length of the hollow tubular element 23 is less than about 50 mm. In some examples, the length of the hollow tubular element 23 is less than about 40 mm. In some examples, the length of the hollow tubular element 23 is less than about 30 mm. Additionally or alternatively, the length of the hollow tubular element 23 is at least about 10 mm. In some examples, the length of the hollow tubular element 23 is at least about 15 mm. In some examples, the length of the hollow tubular element 23 is from about 20 mm to about 30 mm, in some examples from about 22 mm to about 28 mm, and in some examples from about 24 mm to about 26 mm. In this example, the length of the hollow tubular element 23 is 25 mm.

A hollow tubular element 23 is positioned around and defines an air gap in the article 1 acting as a cooling segment. The air gap provides a chamber through which the heated volatilized components generated by the aerosol generating material 21 flow. The hollow tubular element 23 is hollow to provide a chamber for aerosol accumulation, but is rigid enough to withstand the axial compressive forces and bending moments that may occur during manufacture and while the article 1 is in use. The hollow tubular element 23 provides a physical displacement between the aerosol generating material 21 and the inner and outer bodies 11 , 12 . The physical displacement provided by the hollow tubular element 23 will provide a thermal gradient over the length of the hollow tubular element 23 .

The hollow tubular element 23 is at least 40 degrees Celsius between the heated volatilized component entering the first upstream end of the hollow tubular element 23 and the heated volatilized component exiting the second downstream end of the hollow tubular element 23 . degrees can be configured to provide a temperature differential. The hollow tubular element 23 preferably has a heated volatilized component entering the first upstream end of the hollow tubular element 23 and a heated volatilized component exiting the second downstream end of the hollow tubular element 23 . configured to provide a temperature difference of at least 60, 80 or preferably 100 degrees Celsius therebetween. This temperature difference over the length of the hollow tubular element 23 protects the temperature sensitive body materials 11 , 12 from the high temperatures of the aerosol generating material 21 when heated.

In some examples, the aerosol generating material described herein may be a first aerosol generating material and the hollow tubular element 23 may comprise a second aerosol generating material. The wall of the hollow tubular element 23 may comprise a second aerosol generating material. For example, the second aerosol generating material may be disposed on the inner surface of the wall of the hollow tubular element 23 .

The second aerosol generating material comprises at least one aerosol former material, and may also comprise at least one aerosol modifier, or other sensate material. The aerosol former material and/or aerosol modifier may be any aerosol former material or aerosol modifier as described herein, or a combination thereof.

As the aerosol generated from the aerosol generating material 21 , referred to in this case as the first aerosol, is drawn through the hollow tubular element 23 of the mouthpiece 10 , the heat from the first aerosol is transferred to the second aerosol The aerosol-forming material of the product material may be aerosolized to form a second aerosol. The second aerosol may comprise a flavoring agent that may be additional or complementary to the flavor of the first aerosol.

Providing a second aerosol generating material on the hollow tubular element 23 may result in the generation of a second aerosol that boosts or complements the flavor or visual appearance of the first aerosol.

In alternative articles, the hollow tubular element 23 may be replaced with an alternative cooling element, for example an element formed of a material body that allows the aerosol to pass therethrough in the longitudinal direction and also performs the function of cooling the aerosol. .

The aerosol-generating material 21 , also referred to herein as the aerosol-generating substrate 21 , comprises at least one aerosol-forming material. In this example, the aerosol-forming material is glycerol. In alternative examples, the aerosol-forming material may be another material as described herein or a combination thereof. Aerosol-forming materials have been found to enhance the sensory performance of articles by helping to deliver compounds, such as flavor compounds, from the aerosol-generating material to the consumer. However, a problem associated with adding such aerosol-forming materials to aerosol-generating materials in articles for use in non-combustible aerosol-providing systems is that when the aerosol-forming material is aerosolized upon heating, the mass of aerosol delivered by the article increases. This increased mass can maintain a higher temperature as it passes through the mouthpiece. The aerosol, as it passes through the mouthpiece, transfers heat to the mouthpiece, which warms the outer surface of the mouthpiece, including areas that come into contact with consumers' lips during use. The mouthpiece temperature may be significantly higher than what consumers may be accustomed to when smoking, for example, conventional cigarettes, which may be undesirable effects caused by the use of such aerosol-forming materials.

In this example, article 1 has a perimeter of about 21 mm (ie, the article is in a demi-slim format). In other examples, the article may be provided in any of the formats described herein having a perimeter of, for example, 15 mm to 25 mm. Since the article must be heated to emit the aerosol, improved heating efficiency can be achieved using articles with fewer perimeters within this range, for example less than 23 mm. To achieve improved aerosols through heating, product perimeters greater than 19 mm while maintaining adequate product length have also been found to be particularly effective. Articles with perimeters of 19 mm to 23 mm, more preferably 20 mm to 22 mm, have been found to provide a good balance between providing effective aerosol delivery while allowing efficient heating.

Tipping paper 28 is wrapped around outer body 12 , tubular body 14 , tubular element 23 and over at least a portion of rod 21 of aerosol generating material. The tipping paper 28 has an adhesive on its inner surface for connecting the outer body 12 , the tubular body 14 , the tubular element 23 and the rod 21 of aerosol generating material. In this example, the tipping paper 28 extends 5 mm above the rod 21 of aerosol generating material, but it alternatively extends 3 mm to 10 mm, or in some examples 4 mm to 6 mm above the rod 21, so that the outer body 12 ), the tubular body 14 , the tubular element 23 and the rod 21 of aerosol generating material can provide a secure attachment.

The tipping paper 28 may also have a higher basis weight than the basis weight of the plug wraps used in the article 1, for example a basis weight of 40 gsm to 80 gsm, in some examples 50 gsm to 70 gsm, and in this example 58 gsm. It has been found that these ranges of basis weights allow the tipping papers to have acceptable tensile strength while being flexible enough to wrap around the article 1 and adhere to itself along the longitudinal lap seam on the paper. Once wrapped around the aerosol generating material 20, the perimeter of the tipping paper 28 is about 21 mm.

In some examples, the tipping paper comprises a citrate such as sodium citrate and/or potassium citrate. In these examples, the tipping paper may have a citrate content of 2% by weight or less, or 1% by weight or less. Reducing the citrate content of the wrapper can help reduce any visible discoloration of the wrapper during use

In this example, the aerosol-forming material added to the aerosol-generating substrate 21 comprises 14% by weight of the aerosol-generating substrate 21 . In some examples, the aerosol-forming material comprises at least 5%, in some instances at least 10%, by weight of the aerosol-generating substrate. In some examples, the aerosol-forming material comprises less than 25% by weight of the aerosol-generating substrate, in some instances less than 20%, such as between 10% and 20%, between 12% and 18% or between 13% and 16%.

In some examples, the article 1 may be configured such that there is a gap (ie, a minimum distance) between the heater of the non-combustible aerosol providing device 100 and the hollow tubular element 23 . This prevents heat from the heater from damaging the material forming the hollow tubular element.

The minimum distance between the heater of the non-flammable aerosol providing device 100 and the hollow tubular element 23 may be at least 3 mm. In some examples, the minimum distance between the heater of the non-flammable aerosol providing device 100 and the hollow tubular element 23 may range from 3 mm to 10 mm, for example 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm or 10 mm. have.

The spacing between the heating element of the non-combustible aerosol providing device 100 and the hollow tubular element 23 can be achieved, for example, by adjusting the length of the aerosol generating material 21 .

In some examples, the aerosol generating material 21 is provided as a cylindrical rod of aerosol generating material. Regardless of the shape of the aerosol generating material, it preferably has a length of about 10 mm to 100 mm. In some examples, the length of the aerosol generating material is in the range of about 25 mm to 50 mm, in some instances in the range of about 30 mm to 45 mm, and in some examples in the range of about 30 mm to 40 mm.

The volume of aerosol generating material 21 provided may vary from about 200 mm 3 to about 4300 mm 3 , preferably from about 500 mm 3 to 1500 mm 3 , more preferably from about 1000 mm 3 to about 1300 mm 3 . Provision of these volumes of aerosol generating material, for example from about 1000 mm 3 to about 1300 mm 3 , has been shown to advantageously achieve a good aerosol with greater visibility and sensory performance compared to that achieved with selected volumes at the lower end of the range. .

The mass of the provided aerosol-generating material 21 may be greater than 200 mg, for example from about 200 mg to 400 mg, preferably from about 230 mg to 360 mg, more preferably from about 250 mg to 360 mg. Advantageously, it has been found that providing a higher mass of aerosol-generating material results in improved sensory performance compared to an aerosol generated from lower mass of tobacco material.

Preferably the aerosol generating material or substrate is formed of a tobacco material as described herein comprising a tobacco component.

In the tobacco material described herein, the tobacco component preferably holds paper reconstituted tobacco. The tobacco component may also hold leaf tobacco, extruded tobacco, and/or bandcast tobacco.

The aerosol generating material 21 may comprise reconstituted tobacco material having a density of less than about 700 milligrams per cubic centimeter (mg/cc). It has been found that such tobacco material is particularly effective in providing an aerosol generating material that can be heated quickly to release the aerosol compared to denser materials. For example, we tested the properties of various aerosol generating materials such as bandcast reconstituted tobacco material and paper reconstituted tobacco material when heated. For each given aerosol-generating material, it has been found that a certain zero heat flow temperature exists, below which the net heat flow is endothermic, in other words, more heat enters the material than it leaves the material. Above a certain zero heat flow temperature, the net heat flow is exothermic, in other words, while heat is applied to the material, more heat exits the material than enters it. Materials with a density less than 700 mg/cc have a lower zero heat flow temperature. Because a significant portion of the heat flow from the material is through the formation of the aerosol, having a lower zero heat flow temperature has a beneficial effect on the time it takes to initially release the aerosol from the aerosol generating material. For example, aerosol generating materials having a density of less than 700 mg/cc have a zero heat flow temperature of less than 164 °C compared to materials having a density greater than 700 mg/cc having a zero heat flow temperature of greater than 164 °C. was found to have

The density of the aerosol generating material also affects the rate at which heat is conducted through the material, with lower densities, e.g., densities below 700 mg/cc, conducting heat through the material more slowly and thus more lasting. Enables the release of an aerosol.

Preferably, the aerosol generating material 21 comprises a reconstituted tobacco material having a density of less than about 700 mg/cc, eg, a paper reconstituted tobacco material. More preferably, the aerosol generating material 20 comprises reconstituted tobacco material having a density of less than about 600 mg/cc. Alternatively or additionally, the aerosol generating material 21 preferably comprises a reconstituted tobacco material having a density of at least 350 mg/cc which is considered to permit a sufficient amount of heat conduction through the material.

The tobacco material may be provided in the form of cut rag tobacco. A cut rag cigarette may have a cut width of at least 15 cuts per inch (about 5.9 cuts per cm, corresponding to a cut width of about 1.7 mm). Preferably, the cut rag cigarette has a cut width of at least 18 cuts per inch (about 7.1 cuts per cm, corresponding to a cut width of about 1.4 mm), more preferably a cut width of at least 20 cuts per inch (about 7.9 cuts per cm, Corresponding to a cut width of about 1.27 mm). In one example, the cut rag cigarette has a cut width of 22 cuts per inch (about 8.7 cuts per cm, corresponding to a cut width of about 1.15 mm). Preferably, the cut rag cigarette has a cut width of 40 cuts per inch (about 15.7 cuts per cm, corresponding to a cut width of about 0.64 mm) or less. Cut widths of 0.5 mm to 2.0 mm, such as 0.6 mm to 1.5 mm, or 0.6 mm to 1.7 mm, are desirable in terms of surface area to volume ratio, and overall density and pressure drop of the substrate 20 , especially when heated. It has been found to produce material. The cut rag tobacco may be formed from a mixture of forms of tobacco material, for example, a mixture of one or more of paper reconstituted tobacco, leaf tobacco, extruded tobacco and bandcast tobacco. Preferably the tobacco material comprises paper reconstituted tobacco or a mixture of paper reconstituted tobacco and leaf tobacco.

In the tobacco material described herein, the tobacco material may have a filler component. Filler components are generally non-tobacco components, ie components that do not contain components derived from tobacco. The filler component may be wood fibers or non-tobacco fibers such as pulp or wheat fibers. The filler component may also be an inorganic material such as chalk, perlite, vermiculite, diatomaceous earth, colloidal silica, magnesium oxide, magnesium sulfate, magnesium carbonate. The filler component may also be a non-tobacco cast material or a non-tobacco extruded material. The filler component may be present in an amount of 0-20% by weight of the tobacco material, or in an amount of 1-10% by weight of the composition. In some embodiments, no filler component is present.

In the tobacco material described herein, the tobacco material has an aerosol-forming material. In this context, an “aerosol-forming material” is an agent that promotes the generation of an aerosol. The aerosol-forming material may promote the generation of an aerosol by facilitating initial vaporization and/or condensation of the gas into an inhalable solid and/or liquid aerosol. In some embodiments, the aerosol-forming material may improve delivery of flavor from the aerosol-generating material. In general, any suitable aerosol-forming material or agents, including those described herein, may be included in the aerosol-generating material of the present invention. Other suitable aerosol-forming materials include, but are not limited to: sorbitol, glycerol, and polyols such as glycols such as propylene glycol or triethylene glycol; Non-polyols such as monohydric alcohols, high boiling hydrocarbons, acids such as lactic acid, glycerol derivatives, esters such as diacetin, triacetin, triethylene glycol diacetate ( Examples of myristates and aliphatic carboxylic acid esters including triethylene glycol diacetate, triethyl citrate or ethyl myristate and isopropyl myristate For example, 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. Glycerol may be present in an amount of 10% to 20% by weight of the tobacco material, for example 13% to 16% by weight of the composition, or about 14% or 15% by weight of the composition. Propylene glycol, if present, may be present in an amount from 0.1% to 0.3% by weight of the composition.

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

The tobacco material may have from 10% to 90% by weight tobacco leaves, wherein the aerosol-forming material is provided in an amount of up to about 10% by weight of the leaf tobacco. It has advantageously been found that to achieve a total level of aerosol-forming material of 10% to 20% by weight of the tobacco material, it can be added in higher weight percentages to other components of the tobacco material, such as the reconstituted tobacco material.

The tobacco material described herein retains nicotine. The nicotine content may be 0.5% to 1.75% by weight of the tobacco material, for example 0.8% to 1.5% by weight of the tobacco material. Additionally or alternatively, the tobacco material has from 10% to 90% by weight tobacco leaves having a nicotine content greater than 1.5% by weight of the tobacco leaves. Advantageously, the use of tobacco leaves with a nicotine content of greater than 1.5% in combination with a low nicotine content base material such as paper reconstituted tobacco provides adequate nicotine levels to the tobacco material, but rather than using paper reconstituted tobacco alone. It has been found to provide better sensory performance. For example, tobacco leaves, such as cut rag tobacco, may have, for example, a nicotine content of between 1.5% and 5% by weight of tobacco leaves.

Tobacco material described herein may have an aerosol modifier such as any of the flavors described herein. In one embodiment, the tobacco material retains menthol to form an article comprising menthol. The tobacco material may contain 3 mg to 20 mg of menthol, preferably 5 mg to 18 mg, more preferably 8 mg to 16 mg of menthol. In this example, the tobacco material contains 16 mg of menthol. The tobacco material may have from 2% to 8% menthol by weight, preferably from 3% to 7% menthol by weight, more preferably from 4% to 5.5% menthol by weight. In one embodiment, the tobacco material comprises 4.7% menthol by weight. Such high levels of menthol loading can be achieved using a high percentage of reconstituted tobacco material, for example greater than 50% of the tobacco material by weight. Alternatively or additionally, the use of a high volume of aerosol-generating material, eg, tobacco material, is for example when greater than about 500 mm 3 or suitably greater than about 1000 mm 3 of aerosol-generating material such as tobacco material is used. , can increase the level of menthol loading that can be achieved.

In the compositions described herein, where amounts are provided in weight percent, for the avoidance of doubt, this is meant on a dry weight basis, unless specifically indicated otherwise. Thus, any moisture that may be present in the tobacco material or any component thereof is completely neglected for purposes of weight percent determination. The moisture content of the tobacco material described herein can vary, for example, from 5 to 15% by weight. The moisture content of the tobacco material described herein may vary depending on, for example, the temperature, pressure and humidity conditions in which the compositions are maintained. The water content can be determined by Karl-Fisher analysis as known to those skilled in the art. On the other hand, for the avoidance of doubt, even if the aerosol-forming material is a component in a liquid phase, such as glycerol or propylene glycol, any component other than water is included in the weight of the tobacco material. When provided to a tobacco component of tobacco material or a filler component of tobacco material (if present), instead of or in addition to being separately added to, the aerosol-forming material is not included in the weight of the tobacco component or filler component and , included in the weight of “aerosol-forming material” in weight percent as defined herein. All other ingredients present in the tobacco component, even if of non-tobacco origin (eg non-tobacco fibers in the case of paper reconstituted tobacco), are included in the weight of the tobacco component.

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

The paper reconstituted tobacco is present in the tobacco component of the tobacco material described herein in an amount from 10% to 100% by weight of the tobacco component. In embodiments, the paper reconstituted tobacco is present in an amount from 10% to 80% by weight of the tobacco component, or from 20% to 70% by weight. In a further embodiment, the tobacco component consists essentially of or consists of paper reconstituted tobacco. In a preferred embodiment, the leaf tobacco is present in the tobacco component of the tobacco material in an amount of at least 10% by weight of the tobacco component. For example, leaf tobacco may be present in an amount of at least 10% by weight of the tobacco component, with the remainder of the tobacco component being paper reconstituted tobacco, bandcast reconstituted tobacco, or other forms such as bandcast reconstituted tobacco and tobacco granules. Contains a combination of cigarettes.

Paper reconstituted tobacco refers to tobacco material formed by a process of extracting a tobacco feedstock with a solvent to provide a residue comprising an extract of solubles and a fibrous material, which is then extracted (usually after concentration and optionally further processing). After) deposits the extract on the fibrous material (usually after purification of the fibrous material, and optionally with the addition of some of the non-tobacco fibers) to recombine with the fibrous material from the residue. The recombination process is similar to the papermaking process.

The paper reconstituted tobacco may be any type of paper reconstituted tobacco known in the art. In a particular embodiment, the paper reconstituted tobacco is manufactured from a feedstock comprising one or more of tobacco strips, tobacco stems, and whole leaf tobacco. In a further embodiment, the paper reconstituted tobacco is prepared from a feedstock consisting of tobacco strips and/or whole leaf tobacco, and tobacco stems. However, in other embodiments, scraps, fines and winnowings may alternatively or additionally be used in the feedstock.

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

The non-flammable aerosol providing device is used to heat the aerosol generating material 21 of the article 1 . The non-flammable aerosol providing device preferably comprises a coil, since it has been found to enable improved heat transfer to the article 1 compared to other arrangements.

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

In some examples, the coil is configured to generate a changing magnetic field for penetrating the at least one heating element in use, thereby generating inductive heating and/or magnetic hysteresis heating of the at least one heating element. In such an arrangement, the or each heating element may be referred to as a “susceptor” as defined herein. A coil configured to generate a changing magnetic field for penetrating the at least one electrically conductive heating element during use and thus induction heating of the at least one electrically conductive heating element is an "induction coil" or "inductor coil" " can be called

The device may include heating element(s), for example electrically conductive heating element(s), which heating element(s) may be suitably positioned relative to the coil to enable such heating of the heating element(s). may be present or positionable. The heating element(s) 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 to be inserted into the heating zone of the device, the article 1 also containing the aerosol generating material 21 . and may be removed from the heating zone after use. Alternatively, both the device and such article 1 may comprise at least one individual heating element, for example at least one electrically conductive heating element, wherein the coil is positioned on each of the device and article when the article is in the heating zone. Heating of the heating element(s) may occur.

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

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

In some examples, the use of a coil enables a non-combustible aerosol providing device to reach the operating temperature more quickly than a non-coiled aerosol providing device. For example, a non-flammable aerosol providing device comprising a coil as described above may reach an operating temperature such that a first puff may be provided in less than 30 seconds, more preferably less than 25 seconds, from the initiation of a device heating program. have. In some examples, the device may reach the operating temperature within about 20 seconds from initiation of the device heating program.

It has been found that using a coil as described herein in a device to generate heating of an aerosol generating material enhances the aerosol generated. For example, consumers may prefer factory made cigarette (FMC) products in which the aerosol generated by a device comprising a coil as described herein is higher than the aerosol generated by other non-combustible aerosol delivery systems. reported to be sensory closer to that produced by Without wishing to be bound by theory, this means that the reduced time to reach the required heating temperature when the coil is used, the higher heating temperatures that can be achieved when the coil is used, and/or the relatively large volume of these systems by the coil It is assumed to be a result of the fact that it can simultaneously heat the aerosol generating material of In FMC products, burning coal generates a hot aerosol that heats the tobacco in the tobacco rod behind the coal as the aerosol is drawn through the rod. It is understood that this hot aerosol releases flavor compounds from the tobacco in the rod behind the burning coal. It is contemplated that a device comprising a coil as described herein may also heat an aerosol generating material, such as a tobacco material described herein, to release flavor compounds, generating an aerosol that has been reported to be more similar to an FMC aerosol. .

The use of an aerosol delivery system comprising a coil as described herein, for example an induction coil that heats at least a portion of the aerosol generating material to at least 200° C., more preferably at least 220° C. An aerosol may be generated from an aerosol generating material having certain properties that are believed to be more similar. For example, when an aerosol generating material comprising nicotine is heated using an induction heater heated to at least 250° C. for a period of 2 seconds under an air flow of at least 1.50 L/m during this period, the following characteristics One or more of these were observed:

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

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

at least 100 μg of the aerosol-generating material may be aerosolized from the aerosol-generating material;

the average particle or droplet size of the generated aerosol is less than about 1000 nm; and

The aerosol density is at least 0.1 μg/cc.

In some cases, at least 10 μg of nicotine, suitably at least 30 μg or 40 μg of nicotine, is aerosolized from the aerosol generating material under an air flow of at least 1.50 L/m during this period. In some cases, less than about 200 μg, suitably less than about 150 μg or less than about 125 μg of nicotine is aerosolized from the aerosol generating material under an air flow of at least 1.50 L/m during this period.

In some cases, the aerosol has at least 100 μg of aerosol-forming material, suitably at least 200 μg, 500 μg or 1 mg of aerosol-forming material is removed from the aerosol-generating material under an air flow of at least 1.50 L/m during this period. is aerosolized. Suitably, the aerosol-forming material may comprise or consist of glycerol.

As defined herein, the term “average particle or droplet size” refers to the average size of the solid or liquid components of an aerosol (ie, components suspended in a gas). When an aerosol contains suspended liquid droplets and suspended solid particles, the term refers to the average size of all components.

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

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

The non-flammable aerosol providing device is preferably arranged to heat the aerosol generating material 21 of the article 1 to a maximum temperature of at least 160° C. Preferably, the non-combustible aerosol-providing device heats the aerosol-forming material 21 of the article 1 at least about 200° C., or at least about 220° C., at least once during a heating process followed by the non-combustible aerosol-providing device, or at least about 240°C, more preferably at least about 270°C.

Using an aerosol delivery system comprising a coil as described herein, for example an induction coil that heats at least a portion of the aerosol generating material to at least 200° C., more preferably at least 220° C. ) may enable the generation of an aerosol from an aerosol generating material in the article 1 as described herein having a higher temperature than previous devices when leaving the mouth end of the contribute to the generation of aerosols. For example, the maximum aerosol temperature measured at the mouth end of the article 10 may preferably be greater than 50°C, more preferably greater than 55°C, even more preferably greater than 56°C or 57°C. Additionally or alternatively, the maximum aerosol temperature measured at the mouth end of the article 10 may be less than 62°C, more preferably less than 60°C, even more preferably less than 59°C. In some embodiments, the maximum aerosol temperature measured at the mouth end of the article 10 may preferably be between 50°C and 62°C, more preferably between 56°C and 60°C.

3 shows an example of a non-flammable aerosol providing device 100 for generating an aerosol from an aerosol generating medium/material, such as the aerosol generating material 21 of the articles 1 described herein. Broadly speaking, the device 100 heats a replaceable article 110 comprising an aerosol generating medium, for example the articles 1 described herein, so that an aerosol inhaled by a user of the device 100 . or other inhalable media. Device 100 and replaceable article 110 together form a non-flammable aerosol delivery system.

Device 100 includes a housing 102 (in the form of an outer cover) that surrounds and houses various components of device 100 . The device 100 has an opening 104 at one end through which an article 110 can be inserted for heating by the heating assembly. In use, article 110 may be fully or partially inserted into a heating assembly that may be heated by one or more components of the heating assembly. When the article 110 is inserted into the device 100 , the minimum distance between the one or more components of the heater assembly and the tubular element of the article 110 is between 3 mm and 10 mm, such as 3 mm, 4 mm, 5 mm, 6 mm, 7 mm. , 8 mm, 9 mm or 10 mm.

The device 100 of this example includes a first end member 106 that attaches to the first end member 106 to close the opening 104 when the article 110 is not in place. and a lid 108 that can be moved with respect to the In FIG. 3 , the lid 108 is shown in an open configuration, however, the lid 108 can be moved to a closed configuration. For example, the user may cause the lid 108 to slide in the direction of arrow “B”.

Device 100 may also include a user-operable control element 112 , such as a button or switch, that when pressed, activates device 100 . For example, a user may turn on device 100 by actuating switch 112 .

Device 100 may also include electrical components, such as socket/port 114 , that may receive a cable for charging a battery of device 100 . For example, socket 114 may be a charging port, such as a USB charging port.

4 depicts the device 100 of FIG. 3 with the outer cover 102 removed and the article 110 not present. Device 100 defines a longitudinal axis 134 .

4 , a first end member 106 is arranged at one end of the device 100 and a second end member 116 is arranged at an opposite end of the device 100 . The first and second end members 106 , 116 together at least partially define end surfaces of the device 100 . For example, a bottom surface of the second end member 116 at least partially defines a bottom surface of the device 100 . The edges of the outer cover 102 may also define some of the end surfaces. In this example, lid 108 also defines a portion of a top surface of device 100 .

The end of the device closest to the opening 104 may be known as the proximal end (or mouth end) of the device 100 because it is closest to the user's mouth during use. In use, the user inserts the article 110 into the opening 104 , manipulates the user control 112 to initiate heating of the aerosol generating material, and aspirates the aerosol generated by the device. This causes the aerosol to flow through the device 100 along the flow path towards the proximal end of the device 100 .

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

Device 100 further includes a power source 118 . 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, lithium batteries (eg, lithium-ion batteries), nickel batteries (eg, nickel-cadmium batteries), and alkaline batteries. The battery is electrically coupled to the heating assembly to supply electrical power when needed under the control of a controller (not shown) to heat the aerosol generating material. In this example, the battery is connected to a central support 120 that holds the battery 118 in place.

The device further comprises at least one electronics module 122 . The electronic module 122 may include, for example, a printed circuit board (PCB). PCB 122 may support at least one controller, such as a processor, and memory. The PCB 122 may also include one or more electrical tracks to electrically connect the various electronic components of the device 100 to each other. For example, battery terminals may be electrically connected to PCB 122 such that power may be distributed throughout device 100 . Socket 114 may also be electrically coupled to the battery via electrical tracks.

In the example device 100 , the heating assembly is an induction heating assembly and includes various components for heating the aerosol generating material of the article 110 through an induction heating process. Induction heating is the process of heating an electrically conductive object (such as a susceptor) by electromagnetic induction. An induction heating assembly may include an inductive element, eg, one or more inductor coils, and a device for passing a variable current, such as an alternating current, through the inductive element. A variable current in an inductive element generates a changing magnetic field. The changing magnetic field penetrates the susceptor properly positioned relative to the inductive element and creates eddy currents inside the susceptor. The susceptor has an electrical resistance to eddy currents, so the flow of eddy currents to this resistance causes the susceptor to heat up by Joule heating. In cases where the susceptor comprises a ferromagnetic material, such as iron, nickel or cobalt, heat is also removed from the magnetic material by magnetic hysteresis losses in the susceptor, ie as a result of alignment of the magnetic dipoles with a changing magnetic field. can be created by various orientations of the magnetic dipoles of In induction heating, compared to heating by conduction, for example, heat is generated inside the susceptor to allow rapid heating. Moreover, no physical contact is required between the induction heater and the susceptor, allowing for increased freedom in construction and application.

The induction heating assembly of the exemplary device 100 includes a susceptor arrangement 132 (referred to herein as a “susceptor”), a first inductor coil 124 and a second inductor coil 126 . The first and second inductor coils 124 and 126 are made of an electrically conductive material. In this example, the first and second inductor coils 124 , 126 are made of a Litz wire/cable that is wound in a helical configuration to provide the helical inductor coils 124 , 126 . Litz wires include 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 example of device 100 , first and second inductor coils 124 , 126 are made of copper litz wire having a rectangular cross-section. In other examples, the litz wire may have other shaped cross-sections, such as circular.

The first inductor coil 124 is configured to generate a first varying magnetic field for heating the first section of the susceptor 132 , and the second inductor coil 126 energizes the second section of the susceptor 132 . and generate a changing second magnetic field for heating. In this example, first inductor coil 124 is adjacent to second inductor coil 126 in a direction along longitudinal axis 134 of device 100 (ie, first and second inductor coils 124 ). , 126) do not overlap). The susceptor arrangement 132 may include a single susceptor, or two or more separate susceptors. Ends 130 of the first and second inductor coils 124 and 126 may be connected to the PCB 122 .

It will be appreciated that the first and second inductor coils 124 , 126 may, in some examples, have at least one characteristic different from each other. For example, the first inductor coil 124 may have at least one characteristic different from that of the second inductor coil 126 . More specifically, in one example, the first inductor coil 124 may have a different inductance value than the second inductor coil 126 . In FIG. 8 , the first and second inductor coils 124 , 126 have different lengths such that the first inductor coil 124 is wound over a smaller section of the susceptor 132 than the second inductor coil 126 . . Accordingly, the first inductor coil 124 may include a different number of turns than the second inductor coil 126 (assuming the spacing between the individual turns is substantially the same). In another example, the first inductor coil 124 may be made of a different material than the second inductor coil 126 . In some examples, the first and second inductor coils 124 , 126 may be substantially the same.

In this example, the first inductor coil 124 and the second inductor coil 126 are wound in opposite directions. This can be useful when the inductor coils are activated at different times. For example, initially, the first inductor coil 124 may operate to heat a first section/portion of the article 110 , and later, the second inductor coil 126 may operate a second inductor coil 126 of the article 110 . It can operate to heat the section/part. Winding the coils in opposite directions helps to reduce the current induced in the inactive coil when used with certain types of control circuitry. In FIG. 4 , the first inductor coil 124 is a right-hand helix, and the second inductor coil 126 is a left-hand helix. However, in other embodiments, the inductor coils 124 and 126 may be wound in the same direction, or the first inductor coil 124 may be a left hand spiral and the second inductor coil 126 may be a right hand spiral. .

The susceptor 132 in this example is hollow and thus defines a receptacle in which the aerosol generating material is received. For example, the article 110 may be inserted into the susceptor 132 . In this example, the susceptor 120 is tubular with a circular cross-section.

The susceptor 132 may be made of one or more materials. Preferably, the susceptor 132 comprises carbon steel with a coating of nickel or cobalt.

In some examples, the susceptor 132 can include at least two materials that can be heated at two different frequencies for selective aerosolization of the at least two materials. For example, a first section of susceptor 132 (heated by first inductor coil 124 ) may include a first material, and a susceptor (heated by second inductor coil 126 ) ( The second section of 132 may include a second different material. In another example, the first section may include first and second materials, wherein the first and second materials may be heated differently based on operation of the first inductor coil 124 . The first and second materials may be adjacent along an axis defined by the susceptor 132 , or may form different layers within the susceptor 132 . Similarly, the second section may include third and fourth materials, wherein the third and fourth materials may be heated differently based on the operation of the second inductor coil 126 . The third and fourth materials may be adjacent along an axis defined by the susceptor 132 , or may form different layers within the susceptor 132 . For example, the third material may be the same as the first material and the fourth material may be the same as the second material. Alternatively, each of the materials may be different. The susceptor may comprise, for example, carbon steel or aluminum.

The device 100 of FIG. 4 further includes an insulating member 128 , which may be generally tubular and may at least partially surround the susceptor 132 . The insulating member 128 may be constructed of any insulating material, such as, for example, plastic. In this particular example, the insulating member is comprised of polyether ether ketone (PEEK). The insulating member 128 may help insulate the various components of the device 100 from heat generated by the susceptor 132 .

The insulating member 128 may also fully or partially support the first and second inductor coils 124 , 126 . For example, as shown in FIG. 4 , first and second inductor coils 124 , 126 are positioned around insulating member 128 and contact a radially outer surface of insulating member 128 . . In some examples, the insulating member 128 does not abut the first and second inductor coils 124 , 126 . For example, a small gap may exist between the outer surface of the insulating member 128 and the inner surface of the first and second inductor coils 124 and 126 .

In a particular example, the susceptor 132 , the insulating member 128 , and the first and second inductor coils 124 , 126 are coaxial about a central longitudinal axis of the susceptor 132 .

5 shows a side view of the device 100 in a partial cross-sectional view. An outer cover 102 is present in this example. The rectangular cross-sectional shape of the first and second inductor coils 124 , 126 is more clearly visible.

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

The device may also include a second printed circuit board 138 associated within the control element 112 .

The device 100 further includes a spring 142 and a second lid/cap 140 arranged towards the distal end of the device 100 . The spring 142 allows the second cover 140 to open to provide access to the susceptor 132 . The user may open the second cover 140 to clean the susceptor 132 and/or the support 136 .

The device 100 further includes an expansion chamber 144 extending away from the proximal end of the susceptor 132 towards the opening 104 of the device. Positioned at least in part within the expansion chamber 144 is a retention clip 146 for retaining the article against and against the article 110 when received within the device 100 . The expansion chamber 144 is connected to the end member 106 .

6 is an exploded view of the device 100 of FIG. 5 with the outer cover 102 omitted.

7A shows a cross-sectional view of a portion of device 100 of FIG. 5 . 7B depicts an enlarged view of the region of FIG. 7A . 7A and 7B show an article 110 received within a susceptor 132 , wherein the article 110 is dimensioned such that an outer surface of the article 110 abuts an inner surface of the susceptor 132 . . This ensures that the heating takes place most efficiently. The article 110 of this example includes an aerosol generating material 110a. The aerosol generating material 110a is positioned within the susceptor 132 . Article 110 may also include other components such as filters, wrapping materials, and/or cooling structures.

7B shows that the outer surface of the susceptor 132 is spaced apart from the inner surface of the inductor coils 124 , 126 by a distance 150 measured in a direction perpendicular to the longitudinal axis 158 of the susceptor 132 . show what is In one specific example, the distance 150 is about 3 mm to 4 mm, about 3 to 3.5 mm, or about 3.25 mm.

7B shows that the outer surface of the insulating member 128 is spaced apart from the inner surface of the inductor coils 124 , 126 by a distance 152 measured in a direction perpendicular to the longitudinal axis 158 of the susceptor 132 . show what is more In one particular example, distance 152 is about 0.05 mm. In another example, distance 152 is substantially 0 mm, such that inductor coils 124 , 126 abut and contact insulating member 128 .

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

In one example, the susceptor 132 has a length of between about 40 mm and 60 mm, between about 40 mm and 45 mm, or between about 44.5 mm.

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

In use, the article 1 described herein can be inserted into a non-flammable aerosol providing device, such as the device 100 described with reference to FIGS. 3-7 . At least a portion of the mouthpiece 10 of the article 1 may protrude from the non-flammable aerosol providing device 100 and be placed into a user's mouth. An aerosol is generated by heating the aerosol generating material 21 using the device 100 . The aerosol generated by the aerosol generating material 21 is delivered to the user's mouth through the mouthpiece 10 .

8 is a flow diagram illustrating a method of manufacturing a component for use in a non-flammable aerosol delivery system.

The method includes the following steps: forming an inner body comprising a first material (S101); and forming an outer body surrounding the inner body, wherein the resistance to gas flow through the length of the inner body is less than the resistance to gas flow through the length of the outer body (S102).

In some examples, forming the outer body includes integrally forming the outer body with the inner body.

In some examples, forming the outer body includes forming the outer body separately from the inner body and arranging the inner body and the outer body such that the outer body surrounds the inner body.

The various embodiments described herein are presented merely to aid understanding, and to teach the claimed features. These examples are provided merely as representative samples of the examples and are not exhaustive and/or exclusive. Advantages, embodiments, examples, functions, features, structures and/or other aspects described herein are equivalent to the claims or limitations on the scope of the invention as defined by the claims. It is not to be considered as limitations on the invention, and it is to be understood that other embodiments may be utilized and that modifications may be made without departing from the scope of the claimed invention. Various embodiments of the present invention suitably include or consist of suitable combinations of elements, components, features, parts, steps, means, etc. other than those specifically described herein. or may consist essentially of these elements. Moreover, this disclosure may include other inventions that are not currently claimed but may be claimed in the future.

Claims (31)

A component for use in a non-flammable aerosol delivery system, comprising:
The component is
an inner body comprising a first material; and
an outer body comprising a second material and surrounding the inner body;
wherein the resistance to gas flow through the length of the inner body is less than the resistance to gas flow through the length of the outer body;
A component for use in a non-flammable aerosol delivery system. The method of claim 1,
wherein the first material and/or the second material comprises a filament tow;
A component for use in a non-flammable aerosol delivery system. 3. The method of claim 2,
The filament tow comprises cellulose acetate,
A component for use in a non-flammable aerosol delivery system. 4. The method of claim 2 or 3,
wherein the filament tow comprises filaments having a cross-section having an isoperimetric ratio of 25 or less, 20 or less, or 15 or less,
A component for use in a non-flammable aerosol delivery system. 5. The method according to any one of claims 2 to 4,
wherein the filament tow comprises a weight per millimeter of length of the body of material that is from about 10% to about 30% of the range between the minimum and maximum weights of a tow capability curve generated for the filamentary tow.
A component for use in a non-flammable aerosol delivery system. The method of claim 1,
wherein the first material and/or the second material comprises paper;
A component for use in a non-flammable aerosol delivery system. 7. The method according to any one of claims 1 to 6,
the density of the first material is lower than the density of the second material;
A component for use in a non-flammable aerosol delivery system. 8. The method according to any one of claims 1 to 7,
wherein the inner body is substantially cylindrical and/or the outer body is tubular;
A component for use in a non-flammable aerosol delivery system. 9. The method according to any one of claims 1 to 8,
wherein the inner body and/or the outer body have a length in the range of 5 mm to 15 mm;
A component for use in a non-flammable aerosol delivery system. 10. The method according to any one of claims 1 to 9,
the length of the inner body is substantially equal to the length of the outer body;
A component for use in a non-flammable aerosol delivery system. 11. The method according to any one of claims 1 to 10,
Further comprising an adhesive for fixing the inner body and the outer body to each other,
A component for use in a non-flammable aerosol delivery system. 12. The method according to any one of claims 1 to 11,
further comprising a tubular body,
A component for use in a non-flammable aerosol delivery system. 13. The method of claim 12,
wherein the tubular body defines a mouth end of the component;
A component for use in a non-flammable aerosol delivery system. 14. The method according to claim 12 or 13,
wherein the tubular body has a length of at least about 10 mm or at least about 12 mm;
A component for use in a non-flammable aerosol delivery system. 15. The method according to any one of claims 1 to 14,
further comprising a wrapper surrounding the outer body;
A component for use in a non-flammable aerosol delivery system. 16. The method of claim 15,
wherein the wrapper has a citrate content of 2 wt% or less, or 1 wt% or less;
A component for use in a non-flammable aerosol delivery system. An article for use with a non-flammable aerosol providing device comprising:
The article is
an aerosol-generating material comprising at least one aerosol-forming material; and
17. A component comprising a component according to any one of claims 1 to 16,
An article for use with a non-flammable aerosol providing device. 18. The method of claim 17,
further comprising a tubular section disposed downstream of the aerosol generating material;
An article for use with a non-flammable aerosol providing device. 19. The method of claim 18,
wherein the tubular section has a wall thickness of 0.5 mm to 2.5 mm;
An article for use with a non-flammable aerosol providing device. 20. The method of claim 18 or 19,
wherein the tubular section has a length of at least 10 mm;
An article for use with a non-flammable aerosol providing device. 21. The method according to any one of claims 18 to 20,
wherein the tubular section comprises a wall comprising an aerosol generating material;
An article for use with a non-flammable aerosol providing device. 22. The method according to any one of claims 18 to 21,
wherein the tubular section comprises paper having a wall having a thickness greater than 325 microns and/or a permeability of at least 100 Coresta units;
An article for use with a non-flammable aerosol providing device. 23. The method according to any one of claims 17 to 22,
at least one ventilation area arranged to allow outside air to flow into the article;
An article for use with a non-flammable aerosol providing device. 24. The method of claim 23,
wherein the at least one ventilation area comprises a single row of ventilation apertures;
An article for use with a non-flammable aerosol providing device. 24. The method of claim 23,
wherein the at least one ventilation area comprises two or more rows of ventilation apertures.
An article for use with a non-flammable aerosol providing device. 26. The method according to any one of claims 23 to 25,
wherein the aerosol generating material is wrapped by a wrapper having a permeability level greater than about 1000 Coresta units or about 2000 Coresta units.
An article for use with a non-flammable aerosol providing device. 27. The method according to any one of claims 23 to 26,
The level of ventilation provided by the at least one ventilation region is between 45% and 65% of the volume of aerosol generated by the non-combustible aerosol-providing device passing through the article, or the non-combustible aerosol-providing device passing through the article. within 40% to 60% of the aerosol volume produced by
An article for use with a non-flammable aerosol providing device. 28. The method according to any one of claims 17 to 27,
wherein the article is configured such that when the article is inserted into the non-combustible aerosol providing device, the minimum distance between the heater of the non-combustible aerosol providing device and the tubular section of the article is at least about 3 mm;
An article for use with a non-flammable aerosol providing device. A method of making a component for use in a non-flammable aerosol delivery system, comprising:
The method is
forming an inner body; and
forming an outer body surrounding the inner body, wherein the resistance to gas flow through the length of the inner body is less than the resistance to gas flow through the length of the outer body;
A method of manufacturing a component for use in a non-flammable aerosol delivery system. 30. The method of claim 29,
forming the outer body includes forming the outer body integrally with the inner body;
A method of manufacturing a component for use in a non-flammable aerosol delivery system. 30. The method of claim 29,
forming the outer body comprises forming the outer body separately from the inner body and arranging the inner body and the outer body such that the outer body surrounds the inner body;
A method of manufacturing a component for use in a non-flammable aerosol delivery system.

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