GENERATING ARTICLE, METHOD FOR USING AN AEROSOL GENERATING ARTICLE, AEROSOL GENERATING SYSTEM AND ME

专利摘要:
aerosol generating article, method for using an aerosol generating article, aerosol generating system and method for using an aerosol generating system. the present invention relates to an aerosol generating article (10) comprising: an aerosol forming substrate (20); a support element (30) located immediately downstream of the aerosol-forming substrate (20); an aerosol cooling element (40) located downstream of the support element (30); and an outer shell (60) that surrounds the aerosol forming substrate (20), the support element (30) and the aerosol cooling element (40). the support element (30) is bordering on the aerosol forming substrate (20). the aerosol forming substrate (20) is penetrable by a heating element (110) of an aerosol generating device (120).
公开号:BR112014012890B1
申请号:R112014012890-1
申请日:2012-12-28
公开日:2020-09-29
发明作者:Gérard Zuber；Cédric Meyer；Alexis Louvet；Marine Jarriault；Thomas Badertscher；Pierre-Yves Gindrat；Daniele Sanna
申请人:Philip Morris Products S.A；
IPC主号:

专利说明:

[001] The present invention relates to an aerosol generating article comprising an aerosol-forming substrate for generating an inhalable aerosol when heated by a heating element of an aerosol generating device. The present invention also relates to a method of using such an aerosol generating article.
[002] A number of smoking articles in which tobacco is heated rather than burned have been proposed in the art. An aim of such heated tobacco articles is to reduce the known harmful constituents of smoke of the type produced by the combustion and pyrolytic degradation of tobacco in conventional cigarettes.
[003] Typically, in such heated smoke articles, an aerosol is generated by transferring heat from a heat source to a physically separate aerosol-forming substrate or material, which can be placed in, around, or downstream the heat source. During smoking, volatile compounds are released from the aerosol-forming substrate by transferring heat from the heat source and entrained in the inspired air through the smoke article. When the released compounds cool, they condense to form an aerosol that is inhaled by the user.
[004] A series of state-of-the-art documents present aerosol generating devices for consumption or smoking of heated tobacco articles. Such devices include, for example, electrically heated aerosol generating devices in which an aerosol is generated by the heat transfer of one or more electrical heating elements from the aerosol generating device to the aerosol forming substrate of a heated smoke article. An advantage of this type of electrical smoke systems is that they significantly reduce current smoke, while at the same time allowing a user to selectively suspend and resume smoking.
[005] An example of an electrically heated cigarette used in an electric smoke system is described in patent application No. US 2005/0172976 A1. The electrically heated cigarette is constructed to be inserted into a cigarette receiver of a reusable lighter in an electric smoke system. The lighter includes a power supply that supplies power to a heating device that includes a plurality of electrically resistant heating elements, which are arranged to slide the cigarette in such a way that the heating elements are positioned at the over the cigarette. The electrically heated cigarette used in an electric smoke system described in patent application No. US 2005/0172976 A1 can provide the energy for the electrically heated cigarette using pulsed heating.
[006] As described above, the electrically heated cigarette presented in patent application No. US 2005/0172976 A1 is for use in an electrical smoking system comprising a plurality of external heating elements. Electric smoke systems that include aerosol generating devices with internal heating elements are also known. In use, the internal heating elements of the aerosol generating devices of such electrical smoke systems are inserted into the aerosol-forming substrate of a heated smoke article such that the internal heating elements are in direct contact with the air-forming substrate. aerosol.
[007] Direct contact between the internal heating element of an aerosol generating device and the aerosol-forming substrate of a heated smoke article can provide an efficient means for heating the aerosol-forming substrate to form a inhalable aerosol. In such a configuration, the heat from the internal heating element can be transmitted almost instantaneously to at least a portion of the aerosol-forming substrate when the internal heating element is actuated, and this can facilitate the rapid generation of an aerosol. In addition, the heating energy as a whole required to generate an aerosol may be less than would be the case in a smoke system comprising an external heating element, in which the aerosol-forming substrate does not directly contact the heating element and the initial heating of the aerosol-forming substrate occurs by convection or radiation. When an internal heating element of an aerosol generating device is in direct contact with an aerosol-forming substrate, the initial heating of portions of the aerosol-forming substrate that are in direct contact with the internal heating element will be carried out by conduction.
[008] US Patent No. 5,499,636 discloses a cigarette adapted for use in an electric cigarette system. The cigarette comprises a tobacco rod having filled and unfilled portions arranged so that external electric heater elements can overlap the filled and unfilled portions of the tobacco rod. The cigarette is inserted into a receptacle in a front end portion of a lighter to be smoked.
[009] The present invention relates to an aerosol generating article and a method of using an aerosol generating article. In particular, the present invention relates to an aerosol-generating article comprising an aerosol-forming substrate for generating an inhalable aerosol when heated by an internal heating element of an aerosol-generating device. The present invention further relates to a method of using such an aerosol generating article with an aerosol generating device provided with an internal heating element.
[0010] According to a first aspect, an aerosol generating article is provided for use in an aerosol generating system, comprising an electrically heated aerosol generating device provided with an internal heating element. The aerosol generating article comprises, in a linear sequential arrangement, an aerosol-forming substrate, a support element located immediately downstream of the aerosol-forming substrate, an aerosol cooling element located downstream of the support element, and an enclosure external that surrounds the aerosol forming substrate, the support element and the aerosol cooling element. The support element is bordered by the aerosol-forming substrate. The aerosol forming substrate is penetrable by the heating element of the aerosol generating device.
[0011] According to a second aspect, there is provided a method of using an aerosol generating article according to the first aspect, with an aerosol generating device provided with a heating element. The method comprises the steps of inserting the heating element of the aerosol-generating device into the aerosol-forming substrate of the aerosol-generating article, raising the temperature of the heating element of the aerosol-generating device to heat the aerosol-forming substrate of the aerosol-generating article aerosol in order to generate an aerosol, and removing the heating element of the aerosol generating device from the aerosol forming substrate of the aerosol generating article.
[0012] According to a third aspect, an aerosol generating system is provided which comprises: an aerosol generating device provided with a heating element; and an aerosol generating article for use with the aerosol generating device. The aerosol-generating article comprises an aerosol-forming substrate, a support element located immediately downstream of the aerosol-forming substrate, an aerosol cooling element located downstream of the support element, and an outer shell surrounding the aerosol-forming substrate. aerosol, the support element and the aerosol cooling element. The support element is bordered by the aerosol-forming substrate. The aerosol forming substrate is penetrable by the heating element of the aerosol generating device.
[0013] According to a fourth aspect, a method of using an aerosol generating system according to the third aspect is provided. The method comprises the steps of inserting the heating element of the aerosol-generating device into the aerosol-forming substrate of the aerosol-generating article, raising the temperature of the heating element of the aerosol-generating device to heat the aerosol-forming substrate of the aerosol-generating article aerosol in order to generate an aerosol, and removing the heating element of the aerosol generating device from the aerosol forming substrate of the aerosol generating article.
[0014] As used herein, the term "aerosol-forming substrate" is used to describe a substrate capable of releasing volatile compounds upon heating, which can form an aerosol. The aerosol generated from the aerosol-forming substrates of the aerosol-generating articles described in this document may be visible or invisible and may include vapors (for example, fine particles of substances, which are in a gaseous state, which are usually liquid or solid at room temperature) as well as gases and liquid droplets of condensed vapors.
[0015] As used herein, the terms "upstream" and "downstream" are used to describe the relative positions of elements, or portions of elements, of the aerosol-generating article with respect to the direction in which a user inspires the aerosol generating article during its use.
[0016] The aerosol generating article comprises two ends: a proximal end through which the aerosol eliminates the aerosol generating article and is released to a user, and a distal end. In use, the user can inhale at the proximal end in order to inhale the aerosol generated by the aerosol generating article.
[0017] The proximal end can also be referred to as the mouth side or the downstream end and is downstream of the distal end. The distal end can also be referred to as the upstream end and is upstream of the proximal end.
[0018] As used herein, the term "aerosol cooling element" is used to describe an element that has a large surface area and low resistance to inspiration. In use, an aerosol formed of volatile compounds released from the aerosol-forming substrate passes over and is cooled by the aerosol cooling element before being inhaled by a user. In contrast to the high resistance to inspiration of filters and other nozzles, the aerosol cooling elements have a low resistance to inspiration. The chambers and cavities within an aerosol generating article are also not considered to be aerosol cooling elements.
[0019] Preferably, the aerosol-generating article is a smoking article that generates an aerosol that is directly inhalable to a user's lungs through the user's mouth. Most preferably, the aerosol generating article is a smoking article that generates an aerosol containing nicotine that is directly inhaled into a user's lungs through the user's mouth.
[0020] As used herein, the term "aerosol generating device" is used to describe a device that interacts with an aerosol-forming substrate of an aerosol-generating article in order to generate an aerosol. Preferably, the aerosol generating device is a smoking device that interacts with an aerosol forming substrate of an aerosol generating article in order to generate an aerosol that is directly inhaled into a user's lungs through the user's mouth. The aerosol generating device can be a support for a smoking article.
[0021] For the avoidance of doubt, in the description that follows, the term 'heating element' is used to mean one or more heating elements.
[0022] In preferred embodiments, the aerosol-forming substrate is located at the upstream end of the aerosol-generating article.
[0023] In alternative embodiments, the aerosol generating article may comprise a frontal plug upstream of the aerosol-forming substrate, the frontal plug being penetrable by a heating element of an aerosol generating device. In such alternative embodiments, the front plug can be located at the upstream end of the aerosol generating article.
[0024] In such embodiments, the front plug can prevent the exit of the aerosol-forming substrate from the upstream end of the aerosol-forming substrate during handling and transportation. The front plug can also assist in positioning the aerosol-forming substrate at a predetermined distance from the upstream end of the aerosol-forming substrate for optimal fit with a heating element of an aerosol-generating device.
[0025] The front plug can be configured to prevent the aerosol-forming substrate from leaving the aerosol-generating article during use, for example, when a heating element of the aerosol-generating device is removed from the aerosol-generating article. The aerosol-forming substrate of the aerosol-generating article may decrease in contact with a heating element of the aerosol-generating device during heating of the aerosol-forming substrate in order to generate an aerosol. The aerosol-forming substrate may also decrease in such a way that its contact with the outer shell surrounding the components of the aerosol-generating article is reduced. This can loosen the aerosol-forming substrate within the aerosol-generating article. The inclusion of a front plug can facilitate the removal of a heating element from the aerosol-generating article by limiting upstream movement of the aerosol-forming substrate during the removal of a heating element from an aerosol-generating device from the aerosol-generating substrate aerosol of the aerosol generating article.
[0026] Alternatively or in addition, the front plug can be configured to clean a surface of the heating element of the aerosol generating device when the heating element of the aerosol generating device is removed from the aerosol generating article.
[0027] The front plug can define a hole or slit through which a heating element of an aerosol generating device can pass. In this case, in the methods according to the second and fourth aspects, the step of inserting a heating element of an aerosol generating device in the aerosol forming substrate of the aerosol generating article may comprise the passage of the heating element of the generating device of aerosol. aerosol through the hole or slit in the front plug of the aerosol generating article.
[0028] The hole or slot defined in the front cap can be dimensioned to fit a heating element of an aerosol generating device that passes through it. For example, the dimensions of the hole or slit defined in the front cap may correspond almost exactly to the dimensions of a cross section of the heating element of the aerosol generating device. Alternatively, the hole or slit may be smaller than a cross section of the heating element of the aerosol generating device. In such embodiments, the heating element may be necessary in order to deform the front plug in order to pass through the hole or crack.
[0029] One or more holes or slits can be defined in the front plug. For example, an aerosol generating article intended for use with an aerosol generating device provided with three heating elements may comprise a front plug with three holes or slots defined therein, each arranged to receive one of the three heating elements. heating the aerosol generating device.
[0030] Alternatively, the front plug can be made of a perforable material. In this case, in the methods according to the second and fourth aspects, the step of inserting a heating element of an aerosol generating device into the aerosol forming substrate of the aerosol generating article may comprise the perforation of the front plug of the aerosol generating article. with the heating element of the aerosol generating device.
[0031] The front cap can be made of an air-permeable material that allows air to be inspired through the front cap. In such embodiments, a user can draw air downstream through the aerosol generating article through the front plug.
[0032] The front cap can be made of an air-permeable filter material. The front cap can conveniently be made of an air-permeable material used to form the mouth filters of a conventional lit cigarette. For example, the front plug can be made of cellulose acetate fiber. The permeability of the frontal plug may vary in order to help control the resistance to inspiration of the aerosol generating article.
[0033] Alternatively, the front cap can be made of a material impervious to air. In such embodiments, the aerosol generating article may further comprise one or more air inlets downstream of the front plug through which air may be drawn into the aerosol generating article.
[0034] The frontal plug can be made of a low resistance material in order to reduce the force necessary to penetrate the frontal plug with a heating element of an aerosol generating device.
[0035] The front plug can be made of a fibrous material or a foam material. When the front plug is made of a fibrous material, the fibers of the fibrous material can be substantially aligned along the longitudinal direction of the aerosol generating article in order to reduce the force required to penetrate the front plug with a heating element of a device aerosol generator.
[0036] In some embodiments, the frontal plug can be made at least partially from an aerosol-forming substrate. For example, the front plug can be made at least partially from an aerosol-forming substrate comprising tobacco.
[0037] As used in this document, the term "longitudinal" is used to describe the direction between the downstream end and the upstream end of the aerosol generating article, and the term 'transverse' is used to describe the perpendicular direction to the longitudinal direction.
[0038] The front plug can be made of a perforable material that can be deformed by a heating element of an aerosol generating device after insertion of the heating element in the aerosol generating article and which recovers its shape when the heating element heating is removed from the aerosol generating article.
[0039] For example, the front plug may be made of a resilient, perforable material that deforms to allow a heating element of an aerosol generating device to pass the front plug when the front plug is punctured by the heating element. When the heating element is removed from the aerosol generating article, the hole or slit made through the front plug by the heating element may close completely or partially. In such embodiments, the front plug can advantageously provide a cleaning function by cleaning the heating element of the aerosol generating device when the heating element is removed from the aerosol generating article.
[0040] However, it should be noted that the front plug does not have to be made of a resilient material in order to provide a cleaning function. For example, a cleaning function can also be provided when removing a heating element from an aerosol generating device from the aerosol generating article, in which the front plug defines a hole or crack with dimensions that correspond almost exactly or are smaller than the dimensions of a cross section of the heating element.
[0041] The front plug preferably has an outer diameter approximately equal to the outer diameter of the aerosol generating article.
[0042] Preferably, the front cap has an outside diameter of at least 5 mm. The front buffer substrate can have an external diameter between about 5 mm and about 12 mm, for example, between about 5 mm and about 10 mm or between about 6 mm and about 8 mm. In a preferred embodiment, the front plug has an outside diameter of 7.2 mm +/- 10%.
[0043] Preferably, the front plug has a length of at least 2 mm, more preferably at least 3 mm or at least 4 mm. The front plug can be between about 2 mm and about 10 mm long, for example, between about 4 mm and about 8 mm.
[0044] As used in this document, the term "diameter" is used to describe the maximum dimension in the transverse direction of the aerosol generating article. As used herein, the term "length" is used to describe the maximum dimension in the longitudinal direction of the aerosol generating article.
[0045] Preferably, the front plug is substantially cylindrical.
[0046] Preferably, the aerosol-forming substrate is a solid aerosol-forming substrate. The aerosol forming substrate can comprise both the solid and liquid components.
[0047] Preferably, the aerosol-forming substrate comprises nicotine. More preferably, the aerosol-forming substrate comprises tobacco.
[0048] Alternatively or in addition, the aerosol-forming substrate may comprise an aerosol-forming material containing no tobacco.
[0049] When the aerosol-forming substrate is a solid aerosol-forming substrate, the solid aerosol-forming substrate may include, for example, one or more of: powder, granules, pellets, fragments, threads, strips or sheets containing one or more among: grass leaf, tobacco leaf, tobacco ribs, expanded tobacco and homogenized tobacco.
[0050] Optionally, the solid aerosol-forming substrate may contain volatile tobacco flavoring compounds or non-tobacco derivatives, which are released during heating of the solid aerosol-forming substrate. The solid aerosol-forming substrate may also contain one or more capsules, which, for example, include additional tobacco volatile flavoring compounds or non-tobacco volatile flavoring compounds, and such capsules may melt during heating of the solid aerosol forming substrate.
[0051] Optionally, the solid aerosol-forming substrate can be provided on or embedded in a thermally stable vehicle. The vehicle can take the form of powder, granules, pellets, pieces, tapes, strips or sheets. The solid aerosol-forming substrate can be deposited on the vehicle surface in the form, for example, of a sheet, foam, gel or paste. The solid aerosol-forming substrate can be deposited over the entire surface of the vehicle, or, alternatively, can be deposited in a pattern in order to provide a non-uniform aroma release during use.
[0052] In a preferred embodiment, the aerosol-forming substrate comprises a homogenized tobacco material.
[0053] As used herein, the term "homogenized tobacco material" indicates a material formed by the agglomeration of tobacco particles.
[0054] Preferably, the aerosol-forming substrate comprises a joined sheet of homogenized tobacco material.
[0055] As used herein, the term "sheet" indicates a laminar element that has a width and length substantially greater than its thickness.
[0056] As used herein, the term "joined" is used to describe a sheet that is rolled, folded or otherwise substantially compressed or contracted in a direction transverse to the longitudinal geometric axis of the aerosol generating article.
[0057] The use of an aerosol-forming substrate that comprises a joined sheet of homogenized tobacco material significantly and advantageously reduces the risk of "loose ends" compared to an aerosol-forming substrate that comprises pieces of tobacco material, which is the loss of pieces of tobacco material from the ends of the stem. Loose ends can disadvantageously lead to the need for more frequent cleaning of the aerosol generating device to be used with the aerosol generating article and manufacturing equipment.
[0058] Aerosol-forming substrates that comprise a joined sheet of homogenized tobacco material also advantageously exhibit significantly smaller standard deviations in weight than those of an aerosol-forming substrate that comprises pieces of tobacco material. The weight of an aerosol-forming substrate comprising a joined sheet of homogenized tobacco material of a given length is determined by the density, width and thickness of the sheet of homogenized tobacco material that is joined to form the aerosol-forming substrate. The weight of the aerosol forming substrates comprising a joined sheet of homogenized tobacco material of a given length can therefore be adjusted by controlling the density and dimensions of the homogenized tobacco material sheet. This reduces weight inconsistencies between aerosol-forming substrates of the same dimensions, and thus results in a lower rejection rate for aerosol-forming substrates whose weight is outside a selected acceptance range compared to the substrate-forming substrate. aerosol comprising pieces of tobacco material.
[0059] Aerosol-forming substrates that comprise a joined sheet of homogenized tobacco material also advantageously exhibit more uniform densities than aerosol-forming substrates that comprise pieces of tobacco material.
[0060] Inserting a heating element from an aerosol generating device into an aerosol generating substrate comprises pieces of tobacco material and removing a heating element from an aerosol generating device into an aerosol generating substrate comprising pieces of tobacco material may tend to displace pieces of tobacco material from the aerosol-generating substrate. This can disadvantageously result in the need for more frequent cleaning of the heating element and other parts of the aerosol generating device in order to remove the displaced pieces.
[0061] In contrast, inserting a heating element from an aerosol generating device into an aerosol generating substrate comprising a joined sheet of homogenized tobacco material and removing a heating element from an aerosol generating device to an aerosol-generating substrate comprising a joined sheet of homogenized tobacco material advantageously does not tend to displace the tobacco material.
[0062] In a preferred embodiment, the aerosol-forming substrate comprises a textured sheet of homogenized tobacco material.
[0063] As used herein, the term "textured sheet" means a sheet that is pressed, engraved, stamped, perforated or otherwise deformed. The aerosol-forming substrate may comprise a textured sheet of homogenized tobacco material comprising a plurality of spaced cavities, protrusions, perforations or a combination thereof.
[0064] In a particularly preferred embodiment, the aerosol forming substrate comprises a pressed pressed sheet of homogenized tobacco material.
[0065] The use of a textured sheet of homogenized tobacco material can advantageously facilitate the joining of the homogenized tobacco material sheet to form the aerosol forming substrate.
[0066] As used herein, the term "pressed sheet" indicates a sheet having a plurality of substantially parallel ridges or ridges. Preferably, when the aerosol generating article is assembled, the substantially parallel ridges or ridges extend along or parallel to the longitudinal geometric axis of the aerosol generating article. This advantageously facilitates the joining of the pressed sheet of homogenized tobacco material to form the aerosol forming substrate. However, it will be appreciated that the pressed sheets of homogenized tobacco material for inclusion in the aerosol-generating article may, alternatively or in addition, have a plurality of substantially parallel ridges or ridges that are arranged at an acute or obtuse angle to the geometric axis of the aerosol generating article when the aerosol generating article is assembled.
[0067] In certain embodiments, the aerosol-forming substrate may comprise a joined sheet of substantially uniformly textured homogenized tobacco material over substantially its entire surface. For example, the aerosol-forming substrate may comprise a pressed pressed sheet of homogenized tobacco material provided with a plurality of substantially parallel ridges or ridges that are spaced substantially uniformly across the width of the sheet.
[0068] The aerosol-forming substrate may be in the form of a plug comprising an aerosol-forming material surrounded by paper or other wrapping. When an aerosol-forming substrate is in the form of a buffer, the entire buffer, including any wrapper, is considered to be the aerosol-forming substrate.
[0069] In a preferred embodiment, the aerosol-generating substrate comprises a plug that comprises a textured textured sheet of homogenized tobacco material surrounded by a wrapper. In a particularly preferred embodiment, the aerosol generating substrate comprises a plug that comprises a pressed pressed sheet of homogenized tobacco material surrounded by a wrapper.
[0070] In certain embodiments, sheets of homogenized tobacco material for use on the aerosol-generating substrate may have a tobacco content of about 70% or more by weight in a dry gram.
[0071] The sheets of homogenized tobacco material for use on the aerosol generating substrate may comprise one or more intrinsic binders, that is, endogenous tobacco binders, one or more extrinsic binders, that is, endogenous tobacco binders, or a combination of them in order to help agglutinate the tobacco particles. Alternatively or in addition, sheets of homogenized tobacco material for use on the aerosol-generating substrate may include other additives, including, but not limited to, tobacco fibers or non-tobacco derivatives, aerosol builders, humectants, plasticizers, flavorings , fillers, aqueous or non-aqueous solvents, and combinations thereof.
[0072] Extrinsic binders suitable for inclusion in sheets of homogenized tobacco material for use in the aerosol generating substrate are known in the art and include, but are not limited to: gums, such as, for example, guar gum, xanthan gum, gum arabic and locust bean seed; cellulosic binders, such as, for example, hydroxypropyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, methyl cellulose and ethyl cellulose; polysaccharides, such as, for example, starches, organic acids, such as alginic acid, salts of conjugated base of organic acids, such as sodium alginate, agar and pectin; and their combinations.
[0073] Non-tobacco fibers suitable for inclusion in sheets of homogenized tobacco material for use in the aerosol generating substrate are known in the art and include, but are not limited to: cellulose fibers; soft wood fibers; hardwood fibers; jute fibers and their combinations. Prior to inclusion in sheets of homogenized tobacco material for use in the aerosol generating substrate, non-tobacco fibers can be treated by suitable processes known in the art, including, but not limited to: mechanical pulping; refining; chemical pulping; bleaching; sulfate pulping; and their combinations.
[0074] The sheets of homogenized tobacco material for use on the aerosol-generating substrate must have a sufficiently high tensile strength to survive, which are joined together to form the aerosol-generating substrate. In certain embodiments, non-tobacco fibers may be included in the sheets of homogenized tobacco material for use in the aerosol-generating substrate in order to obtain an appropriate tensile strength.
[0075] For example, homogenized sheets of tobacco material for use in the aerosol generating substrate can comprise between about 1% and about 5% of non-tobacco fibers by weight in a dry weight.
[0076] Preferably, the aerosol forming substrate comprises an aerosol former.
[0077] As used herein, the term "aerosol" is used to describe any suitable known compound or mixture of compounds which, in use, facilitates the formation of an aerosol and which is substantially resistant to thermal degradation at temperature operation of the aerosol-generating article.
Suitable aerosol builders are known in the art and include, but are not limited to: water polyalcohols, such as propylene glycol, triethylene glycol, 1,3-butanediol and glycerin; esters of watery polyalcohols, such as glycerol mono-, di- or triacetate; and aliphatic esters of mono-, di-, or carboxylic polyacids, such as dimethyl dodecanedioate and dimethyl tetradecanedioate.
Preferred aerosol builders are water polyalcohols or mixtures thereof, such as propylene glycol, triethylene glycol, 1,3-butanediol and, more preferred, glycerin.
[0080] The aerosol forming substrate may comprise a single aerosol former. Alternatively, the aerosol-forming substrate may comprise a combination of two or more aerosol-forming agents.
[0081] Preferably, the aerosol-forming substrate has an aerosol-forming content greater than 5% in a dry weight.
[0082] The aerosol-forming substrate can have an aerosol-forming content between about 5% and about 30% in a dry weight.
[0083] In a preferred embodiment, the aerosol-forming substrate has an aerosol-forming content of about 20% in a dry weight.
[0084] Aerosol-forming substrates comprising joined sheets of homogenized tobacco for use in the aerosol-generating article can be made by methods known in the art, for example, the methods presented in Publication WO 2012/164009 A2.
[0085] In at least one, the sheets of homogenized tobacco material for use in the aerosol-generating article are formed from a slurry comprising tobacco particles, guar gum, cellulose fibers and glycerin through a process of foundry.
[0086] The aerosol forming element preferably has an outer diameter that is approximately equal to the outer diameter of the aerosol generating article.
[0087] Preferably, the aerosol-forming substrate has an outside diameter of at least 5 mm. The aerosol forming substrate can have an outside diameter of between about 5 mm and about 12 mm, for example, between about 5 mm and about 10 mm or between about 6 mm and about 8 mm. In a preferred embodiment, the aerosol-forming substrate has an outside diameter of 7.2 mm +/- 10%.
[0088] The aerosol-forming substrate can be between 7 mm and 15 mm long. In one embodiment, the aerosol-forming substrate may have a length of about 10 mm. In a preferred embodiment, the aerosol-forming substrate has a length of about 12 mm.
[0089] Preferably, the aerosol-forming substrate is substantially cylindrical.
[0090] The support element is located immediately downstream of the aerosol-forming substrate and is bordered by the aerosol-forming substrate.
[0091] The support element can be formed from any suitable material or combination of materials. For example, the support element can be formed from one or more materials selected from the group consisting of: cellulose acetate; paper card; pressed paper, such as heat-resistant pressed paper or pressed parchment paper; and polymeric materials, such as low density polyethylene (LDPE). In a preferred embodiment, the support element is formed from cellulose acetate.
[0092] The support element can comprise a hollow tubular element. In a preferred embodiment, the support element comprises a hollow cellulose acetate tube.
[0093] The support element preferably has an outer diameter approximately equal to the outer diameter of the aerosol generating article.
[0094] The support element can have an external diameter between about 5 mm and about 12 mm, for example, between about 5 mm and about 10 mm or between about 6 mm and about 8 mm. In a preferred embodiment, the support element has an outside diameter of 7.2 mm +/- 10%.
[0095] The support element can have a length between about 5 mm and about 15 mm. In a preferred embodiment, the support element has a length of about 8 mm.
[0096] During the insertion of a heating element from an aerosol generating device into an aerosol-forming substrate of an aerosol-generating article, a user may need to apply a little force in order to overcome the resistance of the aerosol-forming substrate of the aerosol generating article for inserting the heating element of the aerosol generating device. This can damage one or both of the aerosol generating article and the heating element of the aerosol generating device.
[0097] Furthermore, the application of force during the insertion of the heating element of the aerosol generating device into the aerosol forming substrate of the aerosol generating article can displace the aerosol forming substrate within the aerosol generating article. This may result in the heating element of the aerosol generating device not being fully inserted into the aerosol forming substrate, which may result in irregular and inefficient heating of the aerosol forming substrate of the aerosol generating article.
[0098] In preferred embodiments, the support element is configured to resist movement downstream of the aerosol-forming substrate during insertion of the heating element of the aerosol-generating device into the aerosol-forming substrate of the aerosol-generating article.
[0099] The insertion force experienced by the aerosol generating article, once it is inserted into the aerosol generating device by a user, can be divided into three parts: the frictional force, the penetration force, and the force crushing.
[00100] When the aerosol generating article is initially inserted into the aerosol generating device and before the heating element of the aerosol generating device is inserted into the aerosol forming substrate of the aerosol generating article, the insertion force is dominated by the force necessary to overcome friction due to interference between the outer surface of the aerosol generating article and the inner surface of the aerosol generating device. As used herein, the term "frictional force" is used to describe the maximum insertion force before insertion of the heating element of the aerosol generating device into the aerosol forming substrate of the aerosol generating article.
[00101] When the aerosol generating article is inserted further into the aerosol generating device and before the aerosol generating article reaches a maximum insertion position, the insertion force is dominated by the force necessary to overcome the resistance of the substrate aerosol former of the aerosol generating article for inserting the heating element of the aerosol generating device.
[00102] As used herein, the term "penetrating force" is used to describe the maximum insertion force during insertion of the heating element into the aerosol forming substrate of the aerosol generating article and before the article aerosol generator reaches a maximum insertion position.
[00103] When the aerosol generating article reaches a maximum insertion point, the insertion force is dominated by the force necessary to deform the aerosol generating article. In the maximum insertion position, the extreme tip upstream of the aerosol generating article may come into contact with a surface, for example, a bottom or rear surface, of the aerosol generating device, which prevents the aerosol generating article from being further inserted into the aerosol generating device.
[00104] As used herein, the term "crushing force" is used to describe the maximum insertion force after the aerosol generating article reaches a maximum insertion point.
[00105] The support element of the aerosol generating article resists the penetrating force experienced by the aerosol generating article during the insertion of a heating element of an aerosol generating device in the aerosol forming substrate.
[00106] In one embodiment, the support element is configured so as to withstand a penetrating force of at least 2.5 N during the insertion of a heating element of an aerosol generating device in the aerosol forming substrate.
[00107] In another embodiment, the support element is configured so as to withstand a penetrating force of at least 4 N during the insertion of a heating element of an aerosol generating device in the aerosol forming substrate.
[00108] The support element of the aerosol-generating article resists movement downstream of the aerosol-forming substrate within the aerosol-generating article during the insertion of a heating element of an aerosol-generating device in the aerosol-forming substrate.
[00109] This can help to ensure that the heating element of the aerosol generating device is fully inserted into the aerosol-forming substrate and thereby preventing irregular and inefficient heating of the aerosol-forming substrate of the aerosol-generating article.
[00110] Preferably, the support element has a fracture force of at least 40 N, of, for example, at least 45 N or at least 50 N as measured when using a compression pattern.
[00111] The aerosol cooling element can be located immediately downstream of the support element and be bordering on the support element.
[00112] The aerosol cooling element can be located between the support element and a nozzle located at the extreme end downstream of the aerosol generating article.
[00113] The aerosol cooling element can have a total surface area between about 300 mm2 per millimeter in length and about 1000 mm2 per millimeter in length. In a preferred embodiment, the aerosol cooling element has a total surface area of about 500 mm2 per millimeter in length.
[00114] The aerosol cooling element can alternatively be termed as a heat exchanger.
[00115] The aerosol cooling element preferably has a low resistance to inspiration. That is, the aerosol cooling element preferably offers low resistance to the passage of air through the aerosol generating article. Preferably, the aerosol cooling element does not substantially affect the resistance to inspiration of the aerosol generating article.
[00116] Preferably, the aerosol cooling element has a porosity between 50% and 90% in the longitudinal direction. The porosity of the aerosol cooling element in the longitudinal direction is defined by the ratio of the cross-sectional area of the material that forms the aerosol-cooling element to the internal cross-sectional area of the aerosol-generating article at the position of the aerosol-cooling element .
[00117] The aerosol cooling element can alternatively be referred to as a heat exchanger.
[00118] The aerosol cooling element may include a plurality of channels extended in the longitudinal direction. The plurality of channels extended in the longitudinal direction can be defined by a sheet material that is one or more among pressed, pleated, joined or folded to form the channels. The plurality of channels extended in the longitudinal direction can be defined by a single sheet that is one or more among pressed, pleated, joined or folded to form multiple channels. Alternatively, the plurality of channels extended in the longitudinal direction can be defined by multiple sheets that are one or more among pressed, pleated, joined or folded to form multiple channels.
[00119] It is preferred that the air flow through the aerosol cooling element does not deviate to a substantial extent between adjacent channels. In other words, it is preferred that the flow of air through the aerosol cooling element be made in a longitudinal direction along a longitudinal channel, without substantial radial deviation. In some embodiments, the aerosol cooling element is made of a material that has a low porosity or substantially no porosity other than the channels extended in the longitudinal direction. For example, the aerosol cooling element can be made of a sheet material that has a low porosity or practically no porosity and that is one or more among pressed, pleated, joined or folded to form the channels.
[00120] In some embodiments, the aerosol cooling element may comprise a joined sheet of material selected from the group consisting of metallic sheet, polymeric material, and substantially non-porous paper or cardboard. In some embodiments, the aerosol cooling element may comprise a joined sheet of a material selected from the group consisting of polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyethylene terephthalate (PET), acid polylactic (PLA), cellulose acetate (CA), and aluminum foil.
[00121] In a preferred embodiment, the aerosol cooling element comprises a joined sheet of biodegradable material. For example, a joined sheet of non-porous paper or a joined sheet of biodegradable polymeric material, such as polylactic acid or a grade of Mater-Bi® (a family of commercially available starch-based copolyesters).
[00122] In a particularly preferred embodiment, the aerosol cooling element comprises a joined sheet of polylactic acid.
[00123] The aerosol cooling element can be made from a joined sheet of material with a specific surface area between about 10 mm2 per milligram and about 100 mm2 per milligram weight. In some embodiments, the aerosol cooling element can be made from a joined sheet of material with a specific surface area of about 35 mm2 / mg.
[00124] When an aerosol containing a proportion of water vapor is inspired through the aerosol cooling element, a portion of the water vapor may condense on a surface of the aerosol cooling element. In such cases, it is preferred that the condensed water remains in the form of droplets on the surface of the aerosol cooling element rather than being absorbed by the aerosol cooling element. Therefore, it is preferred that the aerosol cooling element is formed from a substantially non-porous or substantially non-absorbent material.
[00125] The aerosol cooling element can act to cool the temperature of an inspired aerosol flow through the aerosol cooling element by means of thermal transfer. The aerosol components will interact with the aerosol cooling element and release thermal energy.
[00126] The aerosol cooling element can act to cool the temperature of an inspired aerosol flow through the aerosol cooling element by submitting a phase transformation that consumes the thermal energy of the aerosol flow. For example, the aerosol cooling element can be made of a material that undergoes an endothermic phase transformation, such as a melt or a glass transition.
[00127] The aerosol cooling element can act to lower the temperature of an inspired aerosol flow through the aerosol cooling element by causing the condensation of components, such as water vapor from the aerosol flow. Due to condensation, the aerosol stream may become drier after passing through the aerosol cooling element. In some embodiments, the water vapor content of an inspired aerosol stream through the aerosol cooling element can be reduced by between about 20% and about 90%. The user can perceive the temperature of an aerosol dryer as being lower than the temperature of an aerosol humidifier of the same temperature in question.
[00128] In some embodiments, the temperature of an aerosol flow can be reduced by more than 10 degrees Celsius when it is inspired through the aerosol cooling element. In some embodiments, the temperature of an aerosol stream can be reduced by more than 15 degrees Celsius or by more than 20 degrees Celsius when it is inhaled through the aerosol cooling element.
[00129] In some embodiments, the aerosol cooling element removes part of the water vapor content of an inspired aerosol through the aerosol cooling element. In some embodiments, a portion of other volatile substances can be removed from the aerosol stream when the aerosol is inhaled through the aerosol cooling element. For example, in some embodiments, a portion of the phenolic compounds may be removed from the aerosol stream when the aerosol is inhaled through the aerosol cooling element.
[00130] Phenolic compounds can be removed by interaction with the material that forms the aerosol cooling element. For example, the aerosol cooling element can be made of a material that adsorbs phenolic compounds (for example, phenols and cresols).
[00131] Phenolic compounds can be removed by interacting with condensed water droplets on the surface of the aerosol cooling element.
[00132] As noted above, the aerosol cooling element can be made of a sheet of suitable material that is one or more among pressed, pleated, joined or folded in order to define a plurality of channels extended in the longitudinal direction. A cross-sectional profile of such an aerosol cooling element can show the channels as being randomly oriented. The aerosol cooling element can be formed by other means. For example, the aerosol cooling element can be formed from a bundle of tubes extended in the longitudinal direction. The aerosol cooling element can be formed by extrusion, molding, lamination, injection, or fragmentation of a suitable material.
[00133] The aerosol cooling element may comprise an external tube or shell that contains or locates the channels extended in the longitudinal direction. For example, a pleated, joined, or folded sheet material can be wrapped in a wrapping material, for example, a buffer wrapper, to form the aerosol cooling element. In some embodiments, the aerosol cooling element comprises a sheet of pressed material which is joined in a rod shape and closed by a wrapper, for example, a filter paper wrapper.
[00134] The aerosol cooling element preferably has an outer diameter approximately equal to the outer diameter of the aerosol generating article.
[00135] The aerosol cooling element can have an outside diameter with a diameter between about 5 mm and about 10 mm, for example, between about 6 mm and about 8 mm. In a preferred embodiment, the aerosol cooling element has an outside diameter of 7.2 mm +/- 10%.
[00136] The aerosol cooling element can have a length between about 5 mm and about 25 mm. In a preferred embodiment, the aerosol cooling element is about 18 mm long.
[00137] In some embodiments, the aerosol cooling element may comprise a joined sheet of material selected from the group consisting of metallic sheet, polymeric material, or substantially non-porous paper or cardboard. In some embodiments, the aerosol cooling element may comprise a joined sheet of material selected from the group consisting of polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyethylene terephthalate (PET), polylactic acid (PLA), cellulose acetate (CA), and aluminum foil.
[00138] In a preferred embodiment, the aerosol cooling element comprises a joined sheet of biodegradable polymeric material, such as polylactic acid or a grade of Mater-Bi® (a family of commercially available starch-based copolyesters).
[00139] In a particularly preferred embodiment, the aerosol cooling element comprises a joined sheet of polylactic acid.
[00140] The aerosol generating article may comprise a volatile aroma generating component located in the aerosol cooling element. For example, the aerosol generating article may comprise a volatile aroma generating component located in a channel extended in the longitudinal direction of the aerosol cooling element.
[00141] As used herein, the term "volatile flavor component" is used to describe any volatile component that is added to an aerosol generating article in order to provide an aroma.
[00142] The volatile aroma-generating component can be in the form of a liquid or a solid. The volatile aroma-generating compound can be coupled to, or otherwise associated with, a support element. The volatile aroma-generating component may comprise menthol.
[00143] As used herein, the term "menthol" is used to describe the compound 2-isopropyl-5-methyl cyclohexane in any of its isomeric forms.
[00144] Menthol can be used in solid or liquid form. In solid form, menthol can be provided in the form of particles or granules. The term "solid menthol particles" can be used to describe any solid granular or particulate material that comprises at least about 80% by weight of menthol.
[00145] Preferably, 1.5 mg or more of the volatile aroma-generating component is included in the aerosol-generating article.
[00146] The volatile aroma generating component can be coupled to a fibrous support element. The fibrous support element can be any substrate or support suitable for the location, retention or fixation of the aroma-generating component. The fibrous support element can be, for example, a paper support. Such a paper support can be saturated with a liquid component, such as a liquid menthol. The fibrous support can be, for example, a thread or string. Such a thread or string can be saturated with a liquid component, such as a liquid menthol. Alternatively, such a thread or cord may be spun or otherwise coupled to a solid aroma-generating component. For example, solid menthol particles can be attached to a wire.
[00147] Preferably, the volatile aroma generating component is supported by an elongated fibrous support element, such as a thread or string. Preferably, the volatile aroma-generating component is disposed internally in the radial direction from an internal surface of the outer shell within the aerosol-generating article, with the longitudinal geometric axis of the elongated fibrous support element disposed substantially parallel to the longitudinal geometric axis of the aerosol generating article.
[00148] The aerosol generating article may comprise a nozzle located at the downstream end of the aerosol generating article.
[00149] The nozzle can be located immediately downstream of the aerosol cooling element and is bordering on the aerosol cooling element.
[00150] The nozzle may comprise a filter. The filter can be made from one or more suitable filter materials. Many of these filter materials are known in the art. In one embodiment, the nozzle may comprise a filter made of cellulose acetate fiber.
[00151] The nozzle preferably has an outer diameter that is approximately equal to the outer diameter of the aerosol generating article.
[00152] The nozzle can have an outside diameter of between about 5 mm and about 10 mm, for example, between about 6 mm and about 8 mm. In a preferred embodiment, the nozzle has an outside diameter of 7.2 mm +/- 10%.
[00153] The nozzle can have a length between about 5 mm and about 20 mm. In a preferred embodiment, the nozzle has a length of about 14 mm.
[00154] The nozzle can have a length between about 5 mm and about 14 mm. In a preferred embodiment, the nozzle is about 7 mm long.
[00155] The aerosol-forming substrate, the support element and the aerosol cooling element and any other elements of the aerosol generating article, such as the front plug and the nozzle, when present, are surrounded by an outer shell. The outer shell can be made of any suitable material or combination of materials.
[00156] Preferably, the outer wrapper is cigarette paper.
[00157] The end portion downstream of the outer wrapper can be surrounded by a strip of filter paper.
[00158] The appearance of the aerosol-generating article can simulate the appearance of a conventional lit cigarette.
[00159] The aerosol generating article can have an external diameter between about 5 mm and about 12 mm, for example, between about 6 mm and about 8 mm. In a preferred embodiment, the aerosol generating article has an outside diameter of 7.2 mm +/- 10%.
[00160] The aerosol generating article can have a total length of between about 30 mm and about 100 mm. In a preferred embodiment, the aerosol generating article has a total length of approximately 45 mm.
[00161] The aerosol generating device may comprise: a wrap; a heating element; an electrical power source connected to the heating element; and a control element configured to control the power supply from the power source to the heating element.
[00162] The wrap can define a cavity that surrounds the heating element, the cavity being configured in order to receive the aerosol generating article.
[00163] Preferably, the aerosol generating device is an aerosol generating device or portable or manual, comfortable for a user to hold between the fingers of one hand.
[00164] The aerosol generating device may have a substantially cylindrical shape.
[00165] The aerosol generating device can have a length between about 70 mm and about 120 mm.
[00166] The device may include other heaters in addition to the internal heating element that is inserted into the aerosol-forming substrate of the aerosol-generating article.
[00167] The power supply can be any suitable power source, for example, a DC current voltage source, such as a battery. In one embodiment, the power supply is a lithium-ion battery. Alternatively, the power source can be a nickel metal hydride battery, a nickel cadmium battery, or a lithium-based battery, for example, a cobalt lithium, lithium iron phosphate, lithium titanate battery or a lithium polymer battery.
[00168] The control element can be a simple switch. Alternatively, the control element may be an electrical circuit and may comprise one or more microprocessors or microcontrollers.
[00169] The aerosol generating system may comprise an aerosol generating device and one or more aerosol generating articles configured to be housed in the cavity of the aerosol generating device.
[00170] The heating element of the aerosol generating device can be any suitable heating element capable of being inserted into the aerosol-forming substrate of the aerosol generating article. For example, the heating element can be in the form of a pin or blade.
[00171] The heating element may have a tapered, pointed or sharp end in order to facilitate the insertion of the heating element in the aerosol forming substrate of the aerosol generating article.
[00172] The resistance to inspiration (RTD) of the aerosol generating article after the insertion of the heating element can be between about 80 mm WG and about 140 mm WG.
[00173] As used in this document, resistance to inspiration is indicated with the pressure units 'mm WG' or 'mm of water level indicator', and is measured in accordance with ISO 6565: 2002.
[00174] The characteristics described in relation to one aspect or modality may also be applicable to other aspects and modalities. For example, the features described in relation to the aerosol generating articles and the aerosol generating systems described above can also be used in conjunction with the methods of using aerosol generating articles and the aerosol generating systems described above.
[00175] Specific modalities will be described below with reference to the drawings, in which:
[00176] Figure 1 is a schematic cross-section diagram of an embodiment of an aerosol generating article for use with an aerosol generating device comprising a heating element;
[00177] Figure 2 is a schematic cross-section diagram of an embodiment of an aerosol generating system comprising an electrically heated aerosol generating device provided with a heating element, and an aerosol generating article according to the embodiment illustrated in Figure 1; and
[00178] Figure 3 is a schematic cross-section diagram of the electrically heated aerosol generating device illustrated in Figure 2;
[00179] Figure 1 illustrates an aerosol generating article 10 according to a preferred embodiment. The aerosol generating article 10 is composed of four elements arranged in coaxial alignment: an aerosol forming substrate 20, a support element 30, an aerosol cooling element 40, and a nozzle 50 These four elements are arranged in sequence and are surrounded by an outer shell 60 to form the aerosol generating article 10. The aerosol generating article 10 has a proximal end or mouth end 70, which the user inserts into his mouth during use, and a distal end 80 located at the opposite end of the aerosol generating article 10 with respect to the mouth end 70.
[00180] In use, air is inhaled through the aerosol generating article by a user from the distal end 80 to the mouth end 70. The distal end 80 of the aerosol generating article can also be described as the upstream end of the aerosol generating article 10, and the mouth end 70 of the aerosol generating article 10 can also be described as the downstream end of the aerosol generating article 10. The elements of the aerosol generating article 10 located between the mouth end 70 and the distal end 80 can be described as being upstream of the mouth end 70 or, alternatively, downstream of the distal end 80.
[00181] The aerosol forming substrate 20 is located at the extreme distal tip or upstream of the aerosol generating article 10. In the embodiment illustrated in Figure 1, the aerosol forming substrate 20 comprises a joined sheet of pressed homogenized tobacco material surrounded by a wrapper. The pressed sheet of the homogenized tobacco material comprises glycerin as an aerosol former.
[00182] The support element 30 is located immediately downstream of the aerosol forming substrate 20 and is bordering on the aerosol forming substrate 20. In the embodiment shown in Figure 1, the support element is a hollow cellulose acetate tube. The support element 30 locates the aerosol forming substrate 20 at the distal extreme tip 80 of the aerosol generating article 10 so that it can be penetrated by a heating element of an aerosol generating device. As described in more detail below, the support element 30 acts to prevent the aerosol forming substrate 20 from being forced downstream into the aerosol generating article 10 towards the aerosol cooling element 40 when a heating element of an aerosol generating device is introduced into the aerosol forming substrate 20. The support element 30 also acts as a spacer in order to space the aerosol cooling element 40 of the aerosol generating article 10 from the aerosol forming substrate 20.
[00183] The aerosol cooling element 40 is located immediately downstream of the support element 30 and is bordering on the support element 30. In use, volatile substances released from the aerosol-forming substrate 20 pass along the cooling element of aerosol 40 towards the mouth end 70 of the aerosol generating article 10. Volatile substances can cool inside the aerosol cooling element 40 to form an aerosol that is inhaled by the user. In the embodiment illustrated in Figure 1, the aerosol cooling element comprises a pressed and joined sheet of polylactic acid surrounded by a wrapper 90. The pressed and joined sheet of polylactic acid defines a plurality of longitudinal channels that extend along the length of the aerosol cooling element 40.
[00184] The nozzle 50 is located immediately downstream of the aerosol cooling element 40 and is bordering on the aerosol cooling element 40. In the embodiment illustrated in Figure 1, the nozzle 50 comprises a conventional cellulose acetate fiber filter. low filtration efficiency.
[00185] To assemble the aerosol generating article 10, the four elements described above are aligned and tightly wrapped inside the outer wrapper 60. In the embodiment illustrated in Figure 1, the outer wrapper is a conventional cigarette paper. As shown in Figure 1, an optional perforation line is provided in a region of the outer shell 60 that surrounds the support element 30 of the aerosol generating article 10.
[00186] In the embodiment illustrated in Figure 1, a distal end portion of the outer shell 60 of the aerosol generating article 10 is surrounded by a strip of filter paper (not shown).
[00187] The aerosol generating article 10 illustrated in Figure 1 is designed to fit into an aerosol generating device that comprises a heating element to be smoked or consumed by a user. In use, the heating element of the aerosol generating device heats the aerosol forming substrate 20 of the aerosol generating article 10 to a temperature sufficient for the formation of an aerosol, which is inspired downstream through the aerosol generating article 10 and inhaled by the user.
[00188] Figure 2 illustrates a portion of an aerosol generating system 100 comprising an aerosol generating device 110 and an aerosol generating article 10 according to the embodiment described and illustrated in Figure 1.
[00189] The aerosol generating device comprises a heating element 120. As shown in Figure 2, the heating element 120 is mounted within an aerosol generating article housing chamber of the aerosol generating device 110. In use, the user inserts the aerosol-generating article 10 into the aerosol-generating article housing chamber of the aerosol-generating device 110 such that the heating element 120 is directly inserted into the aerosol-forming substrate 20 of the aerosol-generating article 10, such as shown in Figure 2. In the embodiment shown in Figure 2, the heating element 120 of the aerosol generating device 110 is a heater blade.
[00190] The aerosol generating device 110 comprises a power supply and electronic equipment (shown in Figure 3) that allow the heating element 120 to be actuated. Such actuation may be operated manually or may occur automatically in response to inspiration from a user of an aerosol generating article 10 inserted in the aerosol generating article housing chamber of the aerosol generating device 110. A plurality of openings are provided in the aerosol generating device so as to allow air to flow into the aerosol generating article 10; the direction of the air flow being illustrated by the arrows in Figure 2.
[00191] The support element 40 of the aerosol generating article 10 resists the penetrating force experienced by the aerosol generating article 10 during the insertion of the heating element 120 of the aerosol generating device 110 into the aerosol forming substrate 20. The heating element support 40 of the aerosol-generating article 10 thus resists movement downstream of the aerosol-forming substrate within the aerosol-generating article 10 during insertion of the heating element of the aerosol-generating device into the aerosol-forming substrate.
[00192] When the internal heating element 120 is inserted into the aerosol forming substrate 10 of the aerosol generating article 10 and actuated, the aerosol forming substrate 20 of the aerosol generating article 10 is heated to a temperature of approximately 375 degrees Celsius in function of the heating element 120 of the aerosol generating device 110. At this temperature, volatile compounds evolve from the aerosol forming substrate 20 of the aerosol generating article 10. When a user inhales the mouth end 70 of the aerosol generating article 10, the compounds volatiles evolved from the aerosol forming substrate 20 are inspired downstream through the aerosol generating article 10 and condense to form an aerosol which is inspired through the nozzle 50 of the aerosol generating article 10 into the user's mouth.
[00193] As the aerosol passes downstream through the aerosol cooling element 40, the temperature of the aerosol is reduced due to the transfer of thermal energy from the aerosol to the aerosol cooling element 40. When the aerosol enters the aerosol cooling 40, its temperature is approximately 60 degrees Celsius. Due to the cooling inside the aerosol cooling element 40, the temperature of the aerosol as it exits the aerosol cooling element is approximately 40 degrees Celsius.
[00194] In Figure 3, the components of the aerosol generating device 110 are shown in a simplified manner. In particular, the components of the aerosol generating device 110 are not drawn to scale in Figure 1. The components that are not relevant for understanding the modality have been omitted in order to simplify Figure 3.
[00195] As shown in Figure 3, the aerosol generating device 110 comprises a wrap 130. The heating element 120 is mounted within an aerosol generating article housing chamber inside the wrap 130. The aerosol generating article 10 (shown by dashed lines in Figure 3) is inserted into the aerosol generating article housing chamber within the casing 130 of the aerosol generating device 110 such that the heating element 120 is directly inserted into the aerosol forming substrate 20 of the aerosol generating article 10.
[00196] Within the casing 130 there is an electrical power source 140, for example, a rechargeable lithium ion battery. A controller 150 is connected to heating element 120, electrical power source 140, and a user interface 160, for example, a button or screen. The controller 150 controls the energy supplied to the heating element 120 in order to regulate its temperature.
[00197] Although the support element of the aerosol generating article according to the modality described and illustrated in Figure 1 is made of cellulose acetate, it will be appreciated that this is not essential and that the aerosol generating articles in accordance with other modalities may comprise support elements made of other materials or combinations of suitable materials.
[00198] Likewise, although the aerosol generating article according to the embodiment described and illustrated in Figure 1 comprises an aerosol cooling element provided with a pressed and joined sheet made of polylactic acid, it will be appreciated that this is not essential and that aerosol generating articles according to other modalities may comprise other aerosol cooling elements.
[00199] In addition, although the aerosol generating article according to the modality described above and illustrated in Figure 1 has four elements enclosed by an outer shell, it will be appreciated that this is not essential and that the aerosol generating articles according to other modalities may comprise more elements or less elements.
[00200] It will also be appreciated that, although the four elements of the aerosol generating article, according to the modality described above and illustrated in Figure 1, are surrounded by an external wrapping of conventional cigarette paper, this is not essential and that the elements of the aerosol-generating articles according to other modalities may be surrounded by other external wrappers.
[00201] It will also be appreciated that the dimensions provided for the elements of the aerosol generating article according to the embodiment described and illustrated in Figure 1 and the parts of the aerosol generating device according to the embodiment described and illustrated in Figure 2 they are merely exemplary, and what suitable alternative dimensions can be chosen.
[00202] The exemplary modalities described above are not limiting. Other modalities consistent with the exemplary modalities described above will become evident to those skilled in the art.

权利要求:
Claims (13)
[0001]
1. Aerosol generating article (10) for use with an aerosol generating device provided with a heating element for insertion in an aerosol forming substrate (20) of the aerosol generating article (10), the aerosol generating article ( 10) comprising: an aerosol forming substrate (20); and a support element (30) located immediately downstream of the aerosol-forming substrate (20), wherein the support element is bordering the aerosol-forming substrate (20); characterized in that the aerosol generating article (10) comprises an aerosol cooling element (40) located downstream of the support element (30), an outer shell (60) that surrounds the aerosol forming substrate (20), the element support (30) and the aerosol cooling element (40), and where the aerosol forming substrate (20) is located at an extreme upstream end (80) of the aerosol generating article (10), the forming substrate aerosol spray (20) comprising a joined sheet of homogenized tobacco material.
[0002]
Aerosol-generating article according to claim 1, characterized in that the homogenized tobacco material sheet is textured.
[0003]
Aerosol-generating article according to claim 1 or 2, characterized in that the sheet of homogenized tobacco material is pressed.
[0004]
Aerosol-generating article according to any one of claims 1 to 3, characterized in that the support element (30) comprises a hollow tubular element.
[0005]
Aerosol-generating article according to claim 4, characterized in that the support element (30) comprises a hollow cellulose acetate tube.
[0006]
6. Aerosol-generating article, according to one of claims 1 to 5, characterized by the aerosol cooling element (40) being located immediately downstream of the support element (30) and being bordering on the support element ( 30).
[0007]
Aerosol-generating article according to claim 6, characterized in that the aerosol cooling element (40) comprises a joined sheet of biodegradable polymeric material.
[0008]
Aerosol generating article according to claim 7, characterized in that the aerosol cooling element (40) comprises a joined sheet of polylactic acid.
[0009]
9. Aerosol-generating article according to any one of claims 1 to 8, characterized by further comprising: a nozzle (50) located at an extreme end downstream (70) of the aerosol-generating article, in which the outer shell ( 60) surrounds the nozzle (50).
[0010]
An aerosol-generating article according to claim 9, characterized in that the nozzle (50) comprises a cellulose acetate fiber plug.
[0011]
11. Method for using an aerosol generating article, as defined in any one of claims 1 to 10, with an aerosol generating device (110) comprising a heating element (120), the method characterized by comprising the steps of: inserting the heating element (120) of the aerosol generating device (110) into the aerosol forming substrate (20) of the aerosol generating article (10); raising the temperature of the heating element (120) of the aerosol generating device (110) to heat the aerosol forming substrate (20) of the aerosol generating article (10) so as to generate an aerosol; and removing the heating element (120) from the aerosol generating device (110) from the aerosol forming substrate (20) of the aerosol generating article (10).
[0012]
12. Aerosol generating system (100), characterized by comprising: an aerosol generating device (110) provided with a heating element (120); and an aerosol generating article (10) as defined in any one of claims 1 to 10, wherein the aerosol forming substrate (20) is penetrable by the heating element (120) of the aerosol generating device (110).
[0013]
13. Method for using an aerosol generating system (100), as defined in claim 12, the method comprising the steps of: inserting the heating element (120) of the aerosol generating device (110) into the substrate forming the aerosol (20) of the aerosol generating article (10); raising the temperature of the heating element (120) of the aerosol generating device (110) to heat the aerosol forming substrate (20) of the aerosol generating article (10) so as to generate an aerosol; and removing the heating element (120) from the aerosol generating device (110) from the aerosol forming substrate (20) of the aerosol generating article (10).

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法律状态:
2018-12-04| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|

---

2020-06-23| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

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2020-09-29| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 28/12/2012, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

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申请号 | 申请日 | 专利标题

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EP11196203|2011-12-30|

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EP11196204|2011-12-30|

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