巴西专利BR112014019923B1 SMOKE ARTICLE, AND METHOD OF ADJUSTING THE DISTRIBUTION OF AEROSOL OF TUG BY THE LOSS OF A SMOKE ART

专利PDF首页>>巴西专利

专利附录

专利说明

权利要求

类似技术

同族专利

引用文献

法律状态

优先权

专利摘要:
smoking article, and method of adjusting the aerosol distribution of swallow by swallowing a smoking article. the present invention relates to a smoke article (2) which comprises a heat source (4); an aerosol-forming substrate (6) downstream of the heat source (4); a first heat conducting element (22) around and in contact with a rear part (4b) of the heat source and an adjacent front part (6a) of the aerosol forming substrate, and a second heat conducting element (30) around at least a part of the first heat conducting element (22). at least part of the second heat conducting element (30) is radially separated from the first heat conducting element (22). preferably, the first (22) and the second (30, 30 ') heat conducting elements are separated by an outer paper wrap (12).
公开号:BR112014019923B1
申请号:R112014019923-0
申请日:2013-02-12
公开日:2020-09-01
发明作者:Frederic Lavanchy；Stéphane Roudier；Aleksandra Samulewicz
申请人:Philip Morris Products S.A；
IPC主号:

专利说明:

[001] The present invention relates to a smoking article comprising a heat source, an aerosol forming substrate downstream of the heat source and heat conducting elements provided around the smoking article.
[002] Various smoking articles, in which tobacco is heated instead of being burned, have been proposed in the technique. An objective of such "heated" tobacco articles is to reduce harmful constituents contained in the type smoke produced by the combustion and pyrolytic degradation of tobacco in conventional cigarettes. In a known type of heated smoke article, an aerosol is generated by transferring heat from a combustible heat source to an aerosol-forming substrate located downstream of the combustible heat source. During smoking, volatile compounds are released from the aerosol-forming substrate by transferring heat from the combustible heat source and entrenched in the air drawn through the smoke article. As the released compounds cool, they condense to form an aerosol that is inhaled by the user. Typically, air is drawn into such known heated smoke articles through one or more airflow channels provided through the combustible heat source and heat transfer from the combustible heat source to the aerosol forming substrate occurs by convection and driving.
[003] For example, WO-A-2009/022232 describes a smoke article comprising a combustible heat source, an aerosol forming substrate downstream of the combustible heat source, and a heat conducting element around and in contact with a rear part of the combustible heat source and an adjacent front part of the aerosol-forming substrate.
[004] The heat conducting element in the WO-A-2009/022232 smoke article transfers the heat generated during the combustion of the heat source to the aerosol forming substrate through the conduction. The heat drain exerted by the conductive heat transfer significantly lowers the temperature at the rear of the combustible heat source so that the temperature at the rear is retained significantly below its auto-ignition temperature.
[005] In tobacco articles in which the tobacco is heated, the temperature reached in the aerosol-forming substrate has a significant impact on the generation capacity of a sensorially accepted aerosol. It is typically desired to maintain the temperature of the aerosol forming substrate within a certain range in order to optimize the aerosol delivery to the user. In some cases, heat losses from radiation from the outer surface of the heat conducting element can cause the temperature of the combustible heat source and the aerosol-forming substrate to fall outside the desired range, thereby impacting performance smoking article. If the temperature of the aerosol forming substrate drops too much, for example, it can adversely impact the consistency and quantity of the aerosol distributed to the user.
[006] In certain heated smoking articles, convection heat transfer from a combustible heat source to the aerosol forming substrate is provided in addition to conduction heat transfer. For example, in some known smoking articles at least one longitudinal airflow channel is provided through the combustible heat source in order to provide convection heating of the aerosol forming substrate. In such smoke articles, the aerosol forming substrate is heated by a combination of conduction and convection heating.
[007] In other heated smoking articles, it may be preferable to provide a combustible heat source without any airflow channels extending through the heat source. In such smoke articles, there may be limited convection heating of the aerosol forming substrate and heating of the aerosol forming substrate is basically achieved by conduction heat transfer from the heat conducting element. When the aerosol-forming substrate is heated primarily by conduction heat transfer, the temperature of the aerosol-forming substrate may become more sensitive to changes in the temperature of the heat-conducting element. This means that any cooling of the heat conducting element due to radiation heat loss can have a greater impact on aerosol generation than on smoke articles where convection heating of the aerosol forming substrate is also available.
[008] It would be desirable to provide a heated smoking article including a heat source and an aerosol-forming substrate downstream of the heat source that would provide the enhanced smoking performance. In particular, it would be desirable to provide a heated smoke article in which there is improved control of heating by conducting the aerosol-forming substrate to help maintain the temperature of the aerosol-forming substrate within the desired temperature range during the smoking.
[009] In accordance with the present invention, an article for smoking is provided comprising: a heat source; an aerosol-forming substrate downstream of the heat source; a first heat conducting element around and in direct contact with a rear part of the heat source and an adjacent front part of the aerosol forming substrate; and a second heat conducting element about at least a part of the first heat conducting element. At least part of the second heat conducting element is radially separated from the first heat conducting element.
[0010] As used herein, the terms "upstream", "front", "downstream" and "rear" are used to describe the relative positions of the components or parts of components of the smoking articles of the invention with respect to the direction in which a user pulls on the smoking articles during their use.
[0011] Smoking articles of the invention comprise an end for the mouth and an opposite distal end. In use, a user pulls the tip towards the mouth of the smoking article. The mouth end is downstream from the distal end. The heat source is located at or near the distal end.
[0012] The rear part of the heat source is the part that is circumscribed by and in direct contact with the first heat conducting element.
[0013] The front part of the aerosol forming substrate is the part that is circumscribed by and in direct contact with the first heat conducting element.
[0014] As used here, the term "length" is used to describe the dimension in the longitudinal direction of the smoke article.
[0015] As used here, the term "direct contact" is used to mean the contact between two components without any intermediate connection material, so that the surfaces of the components are touching each other.
[0016] As used here, the term "radially separated" is used to indicate that at least part of the second heat conducting element is spaced from the first underlying heat conducting element in a radial direction, so that there is no contact between that part of the second heat conducting element and the first heat conducting element.
[0017] The smoke article of the present invention incorporates a second heat conducting element that overlaps at least part of the first heat conducting element. There is a radial separation between the first and second heat conducting elements at one or more positions in the smoke article.
[0018] Preferably, all or substantially all of the second heat conducting element is radially separated from the first heat conducting element, so that there is substantially no direct contact between the first and second heat conducting elements to limit or inhibit the conductive heat transfer from the first heat conducting element to the second heat conducting element. The heat transfer from the first heat conducting element to the second heat conducting element is therefore preferably limited to radiation heat transfer. As a result, the second heat conducting element retains a temperature lower than that of the first heat conducting element. The radiative heat losses from the outer surfaces of the smoke article are reduced compared to a smoke article which does not have a second heat conducting element around at least a part of the first heat conducting element.
[0019] The second heat conducting element advantageously reduces the heat losses of the first heat conducting element. The second heat conducting element is formed of a heat conducting material which will increase in temperature during the smoking of the smoking article, as the heat is generated by the heat source. The increased temperature of the second heat conducting element reduces the temperature differential between the first heat conducting element and the overlapping material so that the heat loss of the first heat conducting element can be reduced.
[0020] By reducing heat losses of the first heat conducting element, the second heat conducting element advantageously helps to maintain the temperature of the first heat conducting element within the desired temperature range. The second value conduction element advantageously helps to use the heat from the heat source more efficiently to heat the aerosol forming substrate to the desired temperature range. In an additional advantage, the second heat conducting element helps to maintain the temperature of the aerosol forming substrate at a higher level. The second heat conducting element, in turn, improves the aerosol generation of the aerosol-forming substrate. Advantageously, the second heat conducting element increases the overall distribution of the aerosol to the user. In particular, it can be seen that the nicotine distribution can be significantly improved by adding the second heat conducting element.
[0021] Additionally, the second element of heat conduction was considered to be responsible, advantageously, for the extension of the duration of the smoking act for the smoking article so that a greater number of drinks can be given.
[0022] In some preferred embodiments, the second heat conducting element conducts heat along the smoke article from the heat source in the same way as the first heat conducting element. The second heat conducting element can therefore, in such embodiments, also improve the efficiency of heat conduction from the heat source to the aerosol forming substrate and, therefore, heating the aerosol forming substrate.
[0023] The improvement of conduction heat transfer achieved through the inclusion of a second heat conduction element is particularly beneficial for smoke articles in which there is minimal convection heat transfer.
[0024] Radial separation between the first and second heat conducting elements is preferably achieved by including one or more intermediate layers between the first and second heat conducting elements. The one or more intermediate layers can be provided across the entire area in which the second heat conducting element overlaps the first heat conducting element. Alternatively, the one or more intermediate layers can be provided in only part or parts of that area. The one or more intermediate layers may, in some cases, extend beyond the first and second heat conducting elements, for example, along the smoke article beyond the first and second heat conducting elements in a downstream direction or upstream.
[0025] Preferably, the first and second heat conducting elements are radially separated by one or more layers of a thermal insulation material, such as paper. For example, in a preferred embodiment of the invention, the first heat conducting element is covered by a paper wrapper that circumscribes the smoke article along at least a part of its length. The wrapping paper wrap advantageously provides a complete separation of the first and second heat conducting elements so that there is no direct contact between the surfaces of the heat conducting elements.
[0026] Particularly preferably, the first and second heat conducting elements are separated by an external wrap of the smoke article, which circumscribes the smoke article along its length. In such embodiments, the outer wrap is wrapped around the smoke article over the first heat conducting element, and the second heat conducting element is then applied on top of at least a part of the outer wrap. The second heat conducting element can therefore be provided outside the smoke article, so that the second heat conducting element is visible on the outer surface of the smoke article. Alternatively, an additional wrap can be provided over the second heat conducting element to provide the eternal surface of the smoke article. The additional wrap can extend over all or just a part of the smoking article.
[0027] The provision of the second heat conducting element over the outer wrap provides additional benefits with respect to the appearance of the smoking articles according to the invention, and in particular, the appearance of the smoking article during and after the act of smoking. smoke. In certain cases, some discoloration of the outer wrap in the region of the heat source is observed when the wrap is exposed to the heat from the heat source. The outer wrap can be additionally stained as a result of migration of the aerosol former from the aerosol forming substrate into the outer wrap. In the smoke articles according to the invention, the second heat conducting element can be provided on at least part of the heat source and adjacent part of the aerosol forming substrate so that discoloration or stain is covered and is not more visible. The initial appearance of the smoking article can therefore be retained during smoking.
[0028] Alternatively or in addition to an intermediate layer of material between the first and second heat conducting elements, at least part of the first and second heat conducting elements can be radially separated by an air space. An air space can be provided by including one or more spacer elements between the first heat conducting element and the second heat conducting element to maintain a defined separation from one another. This can be achieved, for example, by drilling or engraving the second heat conducting element. In such embodiments, the engraved parts of the second heat conducting element can be in contact with the first heat conducting element while the unrecorded parts are separated from the first heat conducting element by means of an air space, or vice -version. Alternatively, one or more separate spacer elements can be provided between the heat conducting elements.
[0029] Preferably, the first and second heat conducting elements are radially separated from each other by at least 50 microns, more preferably by at least 75 microns and most preferably by at least 100 microns. Where one or more intermediate layers are provided between the heat conducting elements, as described above, the radial separation of the heat conducting elements will be determined by the thickness of one or more intermediate layers.
[0030] As described above, the first heat conducting element of the smoking articles according to the invention is in contact with a rear part of the heat source and an adjacent front part of the aerosol forming substrate. In embodiments with a combustible heat source, the heat conducting element is preferably resistant to combustion and oxygen restriction.
[0031] In particularly preferred embodiments of the invention, the first heat conducting element forms a continuous sleeve which tightly circumscribes the rear of the heat source and the front of the aerosol-forming substrate.
[0032] Preferably, the first heat conducting element provides a substantially impermeable connection to the air between the heat source and the aerosol forming substrate. This advantageously prevents combustion gases from the heat source from being readily transferred into the aerosol-forming substrate through its periphery. Such a connection also minimizes or substantially prevents convection heat transfer from the heat source to the aerosol forming substrate by the hot air transferred along the periphery.
[0033] The first heat conducting element can be formed from any heat resistant material or combination of materials with an adequate thermal conductivity. Preferably, the first heat conducting element is formed from material having a volume thermal conductivity between about 10 W per meter Kelvin (W / (m »K)) and about 500 W per meter Kelvin (W / ( m «K)), more preferably between 15 W / m» K wax and about 400 W / m »K, at 23 C and a relative humidity of 50% as a measure using the plane source method modified transient (MTPS).
[0034] The first heat conducting elements suitable for use in smoking articles according to the invention include, but are not limited to, foil wraps such as, for example, aluminum foil wraps, steel wraps, wraps iron sheet, and copper foil wraps; and metal alloy sheet wraps.
[0035] Preferably, the thickness of the first heat conducting element is between about 5 microns and about 50 microns, more preferably between about 10 microns and about 30 microns and most preferably about 20 microns. In particularly preferred embodiments of the invention, the first heat conducting element is formed from an aluminum foil having a thickness of about 20 microns.
[0036] Preferably, the rear part of the heat source surrounded by the first heat conducting element is between about 2 mm and about 8 mm in length, more preferably between about 3 mm and about 5 mm in length.
[0037] Preferably, the front part of the heat source not surrounded by the first heat conducting element is between about 5 mm and about 15 mm in length, more preferably between about 6 mm and about 8 mm in length.
[0038] Preferably, the aerosol forming substrate extends at least about 3 mm downstream beyond the first heat conducting element. In other embodiments, the aerosol-forming substrate can extend for less than about 3 mm downstream beyond the first heat conducting element. In additional embodiments, the entire length of the aerosol-forming substrate can be surrounded by the first heat conducting element.
[0039] The second heat conducting element is provided through at least part of the first heat conducting element and can extend around all or part of the circumference of the smoke article. Preferably, the second heat conducting element is in the form of a continuous sleeve which circumscribes the smoke article, through a part of at least the first heat conducting element.
[0040] The second heat conducting element can be formed from any suitable heat resistant material or combination of materials with an appropriate thermal conductivity. Preferably, the second heat conducting element is formed from the material having a volume thermal conductivity of between about 10 W per meter Kelvin (W / (m »K)) and about 500 W per meter Kelvin ( W / (m »K)), more preferably between 15 W per meter Kelvin and about 400 W per meter Kelvin, at 23 C and a relative humidity of 50% as measured using the modified transient plane source method ( MTPS).
[0041] Second heat conducting elements suitable for use in the articles for smoking according to the invention include, but are not limited to, foil wraps such as, for example, aluminum foil wraps, steel wraps, wraps iron sheet and copper foil wraps; and alloy sheet wraps. The second heat conducting element can be formed from the same material as the first thermal conducting element, or a different material. Preferably, the first and second heat conducting elements are formed from the same material, which is more preferably aluminum foil.
[0042] And particularly preferred embodiments of the present invention, the second heat conducting element comprises a heat reflecting material, such as aluminum or steel. In such embodiments, the second heat conducting element advantageously reflects part of the heat radiating from the first heat conducting element back to the first heat conducting element. This further reduces the heat losses of the first heat conducting element so that the temperature of the heat conducting element can be better controlled and the heat source can be retained at a higher temperature.
[0043] As used here, the term "heat reflecting material" refers to a material that has a relatively high heat reflection capacity and a relatively low heat emission capacity so that the material reflects a higher proportion of radiation incident from its surface than it emits. Preferably, the material reflects more than 50% of the incident radiation, more preferably more than 70% of the incident radiation and more preferably more than 75%.
[0044] In embodiments in which the second heat conducting element comprises a material that reflects heat, preferably all or substantially all of the second heat conducting element is radially separated from the first heat conducting element in order to facilitate the reflection of the heat towards the first heat conducting element.
[0045] The reflecting ability of the second heat conducting element can be improved by providing a shiny inner surface, where the inner surface is the surface of the second heat conducting element which faces the outer surface of the first heating element. heat conduction.
[0046] In certain preferred embodiments, the second heat conducting element can be formed from a single layer of a heat conducting material, such as aluminum. Alternatively, the second heat-conducting element can be formed from a multilayered or laminated material, comprising at least one layer of a heat-conducting material in combination with one or more other conductive or non-conductive layers. The heat conduction layer can be formed from any of the materials indicated above. In certain embodiments, the second heat conducting element can be formed from a laminated material including at least one heat conducting layer and at least one thermal insulation layer, where the second heat conducting element is provided with the thermal insulation layer forming the internal layer, between the elements of thermal conduction. In this way, the thermal insulation layer of the laminate provides the desired radial separation of the thermally conductive elements. Additional outer layers can be provided through the thermal conduction layer, if desired. For example, an outer layer of paper can be provided through the heat conduction layer for aesthetic reasons.
[0047] The use of a laminated material to provide the second heat conducting element can be additionally beneficial during the production of smoke articles according to the invention, since the thermal insulation layer can provide additional strength and stiffness. This allows the material to be processed more easily, with a reduced risk of collapse or breakage of the heat conduction layer, which can be relatively thin and fragile.
[0048] An example of a laminated material particularly suited to form the second heat conducting element is a double layer laminate, which includes an eternal layer of aluminum and an inner layer of paper.
[0049] Preferably, the thickness of the second heat conducting element is between about 5 microns and about 50 microns, more preferably between about 10 microns and about 30 microns and more preferably around 20 microns. The thickness of the second heat conducting element can be substantially equal to the thickness of the first heat conducting element, or the heat conducting elements can be of a different thickness from each other. Preferably, both the first and second heat conducting elements are formed from an aluminum foil having a thickness of about 20 microns.
[0050] The position and coverage of the second heat conducting element can be adjusted with respect to the first heat conducting element and the underlying heat source and aerosol forming substrate in order to control the heating of the smoke article during smoking. The second heat conducting element can be positioned on at least a part of the aerosol forming substrate. Alternatively or additionally, the second heat conducting element can be positioned over at least a part of the heat source. But preferably, the second heat conducting element is provided over both a part of the aerosol forming substrate and a part of the heat source, similarly to the first heat conducting element.
[0051] The extent of the second heat conducting element with respect to the first heat conducting element in the upstream and downstream directions can be adjusted depending on the desired performance of the smoke article.
[0052] The second heat conducting element can cover substantially the same area of the smoke article as the first heat conducting element so that the heat conducting elements extend along the same length of the smoke article. In that case, the second heat conducting element preferably overlaps directly with the first heat conducting element and completely covers the first heat conducting element.
[0053] Alternatively, the second heat conducting element may extend beyond the first heat conducting element in the upstream, downstream direction, or both upstream and downstream directions. Alternatively or additionally, the first heat conducting element can extend beyond the second heat conducting element in at least one of the upstream and downstream directions.
[0054] Preferably, the second heat conducting element does not extend beyond the first heat conducting element in the downstream direction. The second heat conducting element may extend to approximately the same position in the heat source as the first heat conducting element, so that the first and second heat conducting elements are substantially aligned over the heat source. Alternatively, the first heat conducting element can extend beyond the second heat conducting element in an upstream direction. This arrangement can reduce the temperature of the heat source.
[0055] Preferably, the second heat conducting element extends to at least the same position as the first heat conducting element in the downstream direction. The second heat conducting element can extend to approximately the same position on the aerosol forming substrate as the first heat conducting element so that the first and second heat conducting elements are substantially aligned on the heat forming substrate. aerosol. Alternatively, the second heat conducting element may extend beyond the first heat conducting element in the downstream direction so that the second heat conducting element covers the aerosol-forming substrate over a greater proportion of its length. than the first heat conduction element. For example, the second heat conducting element can extend at least 1 mm beyond the first heat conducting element or at least 2 mm beyond the first heat conducting element. Preferably, however, the aerosol forming substrate extends at least 2 mm downstream beyond the second heat conducting element so that a rear part of the aerosol forming substrate remains uncovered by both heat conducting elements. .
[0056] It has been surprisingly discovered that the extension of the second heat conducting element with respect to the first heat conducting element in the aerosol forming substrate has a significant impact on the performance of the smoking article. The coverage of the second heat conducting element through the aerosol forming substrate can therefore be adjusted in order to adjust the aerosol distribution profile of the smoke article.
[0057] In particular, it has been found that when the second heat conducting element extends beyond the first heat conducting element in a downstream direction, a more consistent, swallow-by-swallow distribution of the aerosol is provided during the act smoking. In particular, the distribution of aerosol during intermediate puffs is considered to be reduced, thus reducing the intensity of smoking during these puffs in order to harmonize more with the intensity of the beginning and end of smoking. It has also been found that the duration of smoking is increased.
[0058] When the second heat conducting element extends beyond the first heat conducting element over the aerosol forming substrate, a larger area of the aerosol forming substrate is covered by the second heat conducting element. The heat is thus distributed over a larger volume of the aerosol-forming substrate, so that there is less of a temperature differential between different parts of the aerosol-forming substrate. This results in a reduction in the temperature of the front of the aerosol forming substrate, and an increase in the temperature of the downstream parts of the aerosol forming substrate. This is believed to be responsible for the effect observed on the aerosol distribution with each puff.
[0059] It has also been observed that the adjustment of the extension of the second heat conducting element in addition to the first heat conducting element in the downstream direction changes the time for the first draft of the smoke article. In particular, the time for the first draft will be increased by increasing the length of the second heat conducting element beyond the first heat conducting element in the downstream direction.
[0060] According to the invention, a method of adjusting the aerosol dispensing is provided by swallowing a smoking article during the swallowing, the method comprising providing an smoking article according to the invention, as described above , and adjusting the amount by which the second heat conducting element extends beyond the first heat conducting element in a downstream direction through the aerosol forming substrate.
[0061] As used herein, the term "aerosol dispensing by swallow" refers to the profile of the amount of aerosol dispensed to the user during each subsequent drink given in the smoking article. For a typical heated smoking article, the profile is in the form of a bell-shaped curve, with the amount of aerosol dispensed increasing in the direction of the intermediate puffs, before reducing again towards the end of the act of smoking. The aerosol delivery of each draft can be adjusted so that the actual amount of aerosol delivered to the user on each draft can be modified. Alternatively or additionally, the relative quantities distributed for each drink can be changed, so that the shape of the profile is changed.
[0062] In the tobacco articles according to the invention, heat is generated through a heat source. The heat source can be, for example, a heat deposit, a chemical heat source, a combustible heat source, or an electrical heat source. The heat source is preferably a combustible heat source, and comprises any suitable fuel, including, but not limited to, carbon, aluminum, magnesium, carbides, nitrides and mixtures thereof.
[0063] Preferably, the heat source of the tobacco articles according to the invention is a carbon-based heat source.
[0064] As used here, the term "carbonary" is used to describe a heat source comprising carbon. Preferably, the combustible carbonary heat sources according to the invention have a carbon content of at least about 35% by dry weight of the combustible heat source.
[0065] In some embodiments, the heat source of the smoking articles according to the invention is a heat source based on combustible carbon. As used here, the term "carbon-based heat source" is used to describe a heat source consisting primarily of carbon.
[0066] Carbon-based heat sources for use in the smoke articles according to the invention may have a carbon content of at least about 50%, preferably at least about 60%, more preferably at least about 70%, more preferably at least about 80% by dry weight of the combustible carbon-based heat source.
[0067] Smoke articles according to the invention can comprise sources of combustible carbon heat formed from one or more suitable carbon-containing materials.
[0068] If desired, one or more binders can be combined with one or more carbon-containing materials. Preferably, the one or more binders are organic binders. Suitable known organic binders include, but are not limited to gums (for example, guar gum), modified celluloses and cellulose derivatives (for example, methyl cellulose, carboxymethyl cellulose, hydroxypropyl cellulose and hitroxypropyl methylcellulose) flour, starches, sugars, vegetable oils and combinations thereof.
[0069] In a preferred embodiment, the source of combustible heat is formed from a mixture of carbon powder, modified cellulose, flour and sugar.
[0070] Instead of, or in addition to, one or more binders, the combustible heat sources for use in the tobacco articles according to the invention may comprise one or more additives in order to improve the properties of the combustible heat source. Suitable additives include, but are not limited to, additives to promote the consolidation of the combustible heat source (eg, sintering assistants), additives to promote ignition of the combustible heat source (eg, oxidants such as perchlorates, chlorates, nitrates , peroxides, permanganates, and / or zirconium), additives to promote combustion of the combustible heat source (for example, potassium and potassium salts such as potassium citrate) and additives to promote the decomposition of one or more gases produced by combustion from the combustible heat source (eg catalysts, such as CuO, Fe2Ü3 and AI2O3).
[0071] Carbonary combustible heat sources for use in the tobacco articles according to the invention are preferably formed by mixing one or more carbon-containing materials with one or more binders and other additives, where included, and pre-forming the mixture in a desired format. The mixture of one or more carbon-containing materials, one or more binders and other additional additives can be preformed in a desired format using any of the suitable known ceramic forming methods such as, for example, slip casting, extrusion , injection molding and matrix compaction. In certain preferred embodiments, the mixture is preformed in a desired shape by extrusion.
[0072] Preferably, the mixture of one or more carbon-containing materials, one or more binders and other additives is preformed on an elongated rod. However, it will be appreciated that the mixture of one or more carbon-containing materials, one or more binders and other additives can be preformed in other desired formats.
[0073] After formation, particularly after extrusion, the elongated rod or other desired shape is preferably dried to reduce this moisture content and then pyrolyzed in a non-oxidizing atmosphere at a temperature sufficient to carbonize one or more binders, where present, and eliminating substantially any volatiles in the elongated rod or other shape. The elongated stem or other desired shape is pyrolysed, preferably in a nitrogen atmosphere at a temperature of between about 700 ° C and about 900 ° C.
[0074] The fuel heat source preferably has a porosity of between about 20% and about 80%, more preferably between about 20% and 60%. Even more preferably, the fuel heat source has a porosity of between about 50% and about 70%, more preferably between about 50% and about 60% as measured, for example, by mercury porosimetry or pycnometry of Helium. The required porosity can be readily achieved during the production of the combustible heat source using conventional methods and technology.
[0075] Advantageously, the combustible carbonary heat sources for use in the tobacco articles according to the invention have an apparent density of between about 0.6 g / cm3 and about 1 g / cm3.
[0076] Preferably, the fuel heat source has a mass of between about 300 mg and about 500 mg, more preferably between about 400 mg and about 450 mg.
[0077] Preferably, the fuel heat source has a length of between about 7 mm and about 17 mm, more preferably between about 7 mm and about 15 mm, more preferably between about 7 mm and about 13 mm.
[0078] Preferably, the fuel heat source has a diameter of between about 5 mm and about 9 mm, more preferably between about 7 mm and about 8 mm.
[0079] Preferably, the source of combustible heat has a substantially uniform diameter. However, the combustible heat source can alternatively be tapered so that the diameter of the rear of the combustible heat source is greater than the diameter of the front. Particularly preferred are sources of combustible heat which are substantially cylindrical. The source of combustible heat can, for example, be a tapered cylinder or cylinder of substantially circular cross section or a tapered cylinder or cylinder of substantially elliptical cross section.
[0080] Smoke articles according to the invention will include one or more air flow paths along which air can be passed through the smoke article for inhalation purposes by a user.
[0081] In certain embodiments of the invention, the heat source comprises at least one longitudinal airflow channel, which provides one or more airflow paths through the heat source. The term "air flow channel" is used here to describe a channel extending along the length of the heat source through which air can be passed through the smoke article for purposes of inhalation by a user. Such heat sources including one or more longitudinal airflow channels are referred to herein as "unblinded" heat sources.
[0082] The diameter of at least one longitudinal airflow channel can be between about 1.5 mm and about 3 mm, more preferably between about 2 mm and about 2.5 mm. The internal surface of the at least one longitudinal airflow channel can be partially or fully coated, as described in more detail in WO-A-2009/022232.
[0083] In alternative embodiments of the invention, none of the longitudinal airflow channels are supplied in the heat source so that air passed through the smoke article does not pass through any of the airflow channels along the source of heat. Such heat sources are referred to here as "blind" heat sources. Smoke articles including blind heat sources define alternative airflow paths through the smoke article.
[0084] In smoke articles according to the invention comprising blind heat sources, the transfer of heat from the heat source to the aerosol forming substrate occurs basically by conduction and heating of the aerosol forming substrate by convection is minimized or reduced. It is therefore particularly important with blind heat sources to optimize the conductive heat transfer between the heat source and the aerosol forming substrate. The use of a second heat conducting element was considered to have a particularly advantageous effect on the performance of smoking articles of smoke including blind heat sources, where there is little or no compensatory heating effect due to convection.
[0085] Preferably, the tobacco articles according to the invention comprise aerosol forming substrates comprising at least one aerosol former and a material capable of emitting volatile compounds in response to heating.
[0086] The at least one aerosol former can be any suitable known compound or mixture of compounds which, in use, facilitate the formation of a dense and stable aerosol. The aerosol former is preferably resistant to thermal degradation at the operating temperature of the smoke article. Suitable aerosol builders are well known in the art and include, for example, polyhydric alcohols, esters of polyhydric alcohols, such as glycerol mono, di or triacetate, and aliphatic esters of mono, di or polycarboxy acids, such as dodechanedioate dimethyl and dimethyl tetradecanedioate. Preferred aerosol builders for use in the tobacco articles according to the invention are polyhydric alcohols or mixtures thereof, such as triethylene glycol, 1,3-butanediol and, more preferably, glycerin.
[0087] Preferably, the material capable of emitting volatile compounds in response to heating is a charge of plant-based material, more preferably a charge of homogenized plant-based material. For example, the aerosol forming substrate may comprise one or more plant-derived materials including, but not limited to, tobacco, tea, for example, green tea, mint, laurel, eucalyptus, basil, sage, verbena and tarragon. The plant-based material may comprise additives including, but not limited to, humectants, flavorings, binders and mixtures thereof. Preferably, the herbal material consists essentially of tobacco material, more preferably, homogenized tobacco material.
[0088] Preferably, the aerosol forming substrate has a length between about 5 mm and about 20 mm, more preferably between about 8 mm and about 12 mm. Preferably, the front part of the aerosol forming substrate surrounded by the first heat conducting element is between about 2 mm and about 10 mm in length, more preferably between about 3 mm and about 8 mm in length, more preferably between about 4 mm and about 6 mm in length. Preferably, the rear part of the aerosol forming substrate not surrounded by the heat conducting element is between about 3 mm and about 10 mm in length. In other words, the aerosol forming substrate preferably extends between about 3 mm and about 10 mm downstream in addition to the first heat conducting element. More preferably, the aerosol forming substrate extends at least about 4 mm downstream beyond the first heat conducting element.
[0089] The heat source and the aerosol forming substrate of the smoking articles according to the invention can be substantially supported on each other. Alternatively, the heat source and the aerosol forming substrate of the smoking articles according to the invention can be spaced longitudinally from each other.
[0090] Preferably, the smoke articles according to the invention comprise an air flow directing the element downstream of the aerosol forming substrate. The air flow directing element defines an air flow path through the smoke article. At least one air inlet is preferably provided between an end downstream of the aerosol-forming substrate and an end downstream of the airflow directing element. The air flow directing element directs air from at least one inlet towards the end towards the mouth of the article for smoking.
[0091] The air flow directing member may comprise a hollow body substantially impermeable to open-ended air. In such embodiments, the air passed through at least one air inlet is first passed upstream along the outside of the hollow body substantially impermeable to open-ended air and then downstream through the interior of the hollow body substantially impermeable to air from open end.
The substantially air-impermeable hollow body may be formed from one or more suitable air-impermeable materials that are substantially thermally stable at aerosol temperature generated by the transfer of heat from the heat source to the aerosol-forming substrate. Suitable materials are known in the art and include, but are not limited to, cardboard, plastic, ceramics and combinations thereof.
[0093] In a preferred embodiment, the hollow body substantially impermeable to open-ended air is a cylinder, preferably a straight circular cylinder.
[0094] In another preferred embodiment, the hollow body substantially impermeable to open-ended air is a truncated cone, preferably a truncated straight circular cone.
[0095] The hollow body substantially impermeable to open-ended air may have a length of between about 7 mm and about 50 mm, for example, a length of between about 10 mm and about 45 mm or between about 15 mm and about 30 mm. The air flow directing element may have other lengths depending on the desired overall length of the smoke article, and the presence and length of other components within the smoke article.
[0096] Where the hollow body substantially impermeable to open-ended air is a cylinder, the cylinder may have a diameter of between about 2 mm and about 5 mm, for example, a diameter of between about 2.5 mm and about 4.5 mm. The cylinder may have other diameters depending on the desired general diameter of the smoke article.
[0097] Where the hollow body substantially impermeable to open-ended air is a truncated cone, the upstream end of the truncated cone may have a diameter of between about 2 mm and about 5 mm, for example, a diameter of between about 2.5 mm and about 4.5 mm. The upstream end of the truncated cone may have other diameters depending on the desired general diameter of the smoking article.
[0098] Where the hollow body substantially impermeable to open air is a truncated cone, the downstream end of the truncated cone may have a diameter of between about 5 mm and about 9 mm, for example, from about 7 mm and about 8 mm. The downstream end of the truncated cone may have other diameters depending on the desired general diameter of the smoking article. Preferably, the downstream end of the truncated cone has substantially the same diameter as the aerosol-forming substrate.
[0099] The hollow body substantially impermeable to open-ended air can rest on the aerosol-forming substrate. Alternatively the hollow body substantially impermeable to open-ended air can extend into the aerosol-forming substrate. For example, in certain embodiments, the hollow body substantially impermeable to open-ended air can extend up to 0.5 L into the aerosol-forming substrate, where Léo is the length of the aerosol-forming substrate.
[00100] The upstream end of the hollow body substantially impermeable to air has a reduced diameter compared to the aerosol forming substrate.
[00101] In certain embodiments, the downstream end of the hollow body substantially impermeable to air has a reduced diameter compared to the aerosol-forming substrate.
[00102] In other embodiments, the downstream end of the hollow body substantially impermeable to air has substantially the same diameter as the aerosol-forming substrate.
[00103] Where the downstream end of the substantially air-impermeable hollow body is reduced in diameter with respect to the aerosol-forming substrate, the substantially air-impermeable hollow body may be circumscribed by a substantially air-tight seal. In such embodiments, the substantially air-tight seal is located downstream of one or more air inlets. The substantially air-tight seal may have substantially the same diameter as the aerosol-forming substrate. For example, in some embodiments, the downstream end of the substantially air-impermeable hollow body may be circumscribed by a substantially impermeable plug or washer of substantially the same diameter as the aerosol-forming substrate.
[00104] The substantially air-tight seal may be formed from one or more suitable air-tight materials that are substantially thermally suitable at the temperature of the aerosol generated by the transfer of heat from the combustible heat source to the formation substrate. aerosol. Suitable materials are known in the art and include, but are not limited to, cardboard, plastic, wax, silicone, ceramic and combinations thereof.
[00105] At least a part of the length of the hollow body substantially impermeable to open-ended air can be circumscribed by an air-permeable diffuser. The air-permeable diffuser may have a diameter substantially the same as the aerosol-forming substrate. The air-permeable diffuser can be formed from one or more suitable air-permeable materials that are substantially thermally stable at the temperature of the aerosol generated by the transfer of heat from the combustible heat source to the aerosol forming substrate. Suitable air-permeable materials are known in the art and include, but are not limited to, porous materials such as, for example, cellulose acetate filaments, cotton, open cell ceramics and polymeric foams, tobacco material and combinations thereof.
[00106] In a preferred embodiment, the airflow directing element comprises a hollow tube substantially impermeable to open-ended air of reduced diameter compared to the aerosol-forming substrate and a substantially impermeable seal to annular air of outside diameter substantially the same as the aerosol-forming substrate, which circumscribes an end downstream of the hollow tube.
[00107] The air flow directing element may additionally comprise an internal wrap, which circumscribes the hollow tube and the substantially impermeable seal to annular air.
[00108] The open upstream end of the hollow tube can rest on an end downstream of the aerosol-forming substrate. Alternatively, the open upstream end of the hollow tube can be inserted or otherwise extends into the downstream end of the aerosol forming substrate.
[00109] The air flow directing element may additionally comprise an annular air-permeable diffuser with an external diameter substantially equal to the aerosol forming substrate, which circumscribes at least a part of the length of the hollow tube downstream of the substantially impermeable seal. annular air. For example, the hollow tube can at least partially be embedded in a cellulose acetate filament plug.
[00110] In another preferred embodiment, the airflow directing element comprises a truncated hollow cone substantially impermeable to open-ended air having an upstream end of the reduced diameter compared to the aerosol forming substrate and a downstream end substantially equal in diameter to the aerosol-forming substrate.
[00111] The open upstream end of the truncated hollow cone can rest on an end downstream of the aerosol-forming substrate. Alternatively, the open upstream end of the truncated hollow cone can be inserted or otherwise extend into the downstream end of the aerosol forming substrate.
[00112] The air flow directing element may additionally comprise an annular air-permeable diffuser of an external diameter substantially equal to the aerosol forming substrate, which circumscribes at least part of the length of the truncated hollow cone. For example, the truncated hollow cone can be at least partially embedded in a cellulose acetate filament plug.
[00113] Smoke articles according to the invention preferably further comprise an expansion chamber downstream of the aerosol-forming substrate and, where present, downstream of the airflow directing element. The inclusion of an expansion chamber advantageously allows additional cooling of the aerosol generated by the transfer of heat from the heat source to the aerosol forming substrate. The expansion chamber also advantageously allows the overall length of tobacco articles according to the invention to be adjusted to a desired value, for example, to a length similar to that of conventional cigarettes, through an appropriate choice of length of the smoking chamber. expansion. Preferably, the expansion chamber is an elongated hollow tube.
[00114] Smoke articles according to the invention can also additionally comprise a mouth piece downstream of the aerosol forming substrate and, where present, downstream of the airflow directing element and expansion chamber. The nozzle, for example, comprises a filter made of cellulose acetate, paper or other suitable known filter materials. Preferably, the nozzle has a low filtering efficiency, more preferably very low filtering efficiency. Alternatively or in addition, the nozzle may comprise one or more segments comprising absorbents, adsorbents, flavorings, and other aerosol modifiers and additives that are used in conventional cigarette filters, or combinations thereof.
[00115] Smoke articles according to the invention can be assembled using known methods and machinery.
[00116] The invention will be described further, by way of example only, with reference to the attached drawings in which:
[00117] Figure 1 illustrates a schematic longitudinal cross section of a smoking article according to a first embodiment of the invention;
[00118] Figure 2 illustrates a schematic longitudinal cross section of a smoking article according to a second embodiment of the invention; and
[00119] Figure 3 illustrates a schematic longitudinal cross section of a smoking article according to a third embodiment of the invention.
[00120] The smoke article 2 illustrated in Figure 1 comprises a combustible carbonary heat source 4, an aerosol forming substrate 6, an elongated expansion chamber 8 and a nozzle 10 resting on coaxial alignment. The combustible carbonary heat source 4, the aerosol-forming substrate 6, the elongated expansion chamber 8 and the nozzle 10 are enclosed in an outer wrapper of the low air permeable cigarette paper 12.
[00121] As illustrated in Figure 1, a first gas-resistant, non-combustible protective coating 14 is provided substantially across the back face of the combustible carbonary heat source 4. In an alternative embodiment, a first substantially air-impervious protection non-combustible is provided in the form of a disc that rests on the rear face of the combustible carbon heat source 4 and the front face of the aerosol forming substrate 6.
[00122] The combustible carbonary heat source 4 is a non-blind heat source and comprises a central airflow channel 16 which extends longitudinally through the combustible carbonary heat source 4 and the first non-gas resistant protective coating fuel 14. The second heat resistant and gas resistant protective coating (not shown) is provided on the inner surface of the central airflow channel 16.
The aerosol forming substrate 6 is located immediately downstream of the combustible carbonary heat source 4 and comprises a cylindrical plug of tobacco material 18 comprising glycerin as the aerosol former and circumscribed by the filter plug wrap 20.
[00124] A first heat conducting element 22 consisting of an aluminum foil tube surrounds and is in contact with a rear part 4b of the combustible carbon heat source 4 and a supported front part 6a of the aerosol forming substrate 6. As illustrated in Figure 1, a rear part of the aerosol forming substrate 6 is not surrounded by the first thermally conductive element 22.
[00125] The elongated expansion chamber 8 is located downstream of the aerosol forming substrate 6 and comprises a cylindrical open end tube of cardboard 24. The nozzle 10 of the smoke article 2 is located downstream of the expansion chamber 8 and comprises a cylindrical plug of cellulose acetate filaments 26 of very low filtration efficiency circumscribed by the filter plug wrap 28. The nozzle 10 can be circumscribed by the tip paper (not shown).
[00126] A second heat conducting element 30 consisting of an aluminum foil tube surrounds and is in contact with the upper wrapper 12. The second heat conducting element 30 is positioned on the first heat conducting element 22 and it has the same dimensions as the first heat conducting element 22. The second heat conducting element 30 therefore overlaps directly with the first heat conducting element 22, with the outer casing 12 between them.
[00127] In use, the user ignites the combustible carbon heat source 4 then passes the air through the central airflow channel 16 downstream towards the nozzle 10. The front part 6a of the forming substrate aerosol 6 is heated basically by conduction through the supported non-combustible rear part 4b of the combustible carbonary heat source 4 and the first heat conduction element 22. The exhaust air is heated as it passes through the central air flow channel 16 from the combustible carbonary heat source 4 and then heats aerosol-forming substrate 6 by convection. Heating the aerosol-forming substrate 6 releases volatile and semi-volatile compounds and glycerin from tobacco material 18, which are entrenched in the heated air as it flows through the aerosol-forming substrate 6. The heated air and entrenched compounds pass downstream through the expansion chamber 8, they cool and condense to form an aerosol that passes through the nozzle 10 in the user's mouth.
[00128] The second heat conducting element 30 retains heat within the smoke article 2 to help maintain the temperature of the first air conducting element 22 during smoking. This, in turn, helps to maintain the temperature of the aerosol-forming substrate 6 to facilitate continued and improved aerosol delivery.
[00129] Smoke article 54 according to the second embodiment of the invention illustrated in Figure 2 comprises a combustible carbonary heat source 40, an aerosol-forming substrate 6, an airflow directing element 44, an air chamber elongated expansion 8 and a nozzle 10 in supporting coaxial alignment. The combustible carbonary heat source 40, the aerosol forming substrate 6, the airflow directing element 44, elongated expansion chamber 8 and nozzle 10 are wrapped and an outer wrapper of low air permeable cigarette paper 12 .
[00130] As illustrated in Figure 2, a substantially impermeable non-combustible air protective coating 14 is provided on the entire rear face of the combustible carbonary heat source 40 of the smoke article 54. In an alternative embodiment, instead of a coating , a substantially impermeable protection against non-combustible air is provided in the form of a disc that supports the rear face of the combustible carbonary heat source 40 and the front face of the aerosol forming substrate 6.
[00131] The combustible carbonary heat source 40 is a blind heat source and in the smoke article 54 according to the second embodiment, the air passed through the smoke article for inhalation by a user does not pass through any flow channels of air along the fuel heat source 40.
[00132] The aerosol forming substrate 6, the expansion chamber 8 and the nozzle 10 have the same construction and function as described above with respect to the smoke article 2 of the first embodiment illustrated in Figure 1.
[00133] As in smoke article 2 of the first embodiment illustrated in Figure 1, a first heat conducting element 22 consisting of an aluminum foil tube surrounds and is in contact with a rear part 4b of the carbonary heat source fuel 40 and a supported front part 6a of the aerosol forming substrate 6. A second heat conducting element 30 consisting of a similar aluminum foil tube is also provided as described above with respect to the smoke article 2 of the first embodiment illustrated in Figure 1.
An air flow directing element 44 is located downstream of the aerosol forming substrate 6 and comprises a hollow tube substantially impermeable to open-ended air 56 made of, for example, cardboard, which has a reduced diameter in comparison with the aerosol forming substrate 6. The upstream end of the open-ended hollow tube 56 is surrounded by a substantially annular air-tight seal 58 of substantially the same diameter as the aerosol-forming substrate 6. The remainder of the hollow end tube open is embedded in a cylindrical plug of cellulose acetate filaments 60 in diameter substantially equal to the aerosol forming substrate 6.
[00135] The hollow tube with open end 56 and cylindrical plug of cellulose acetate filaments 60 are circumscribed by an internal air-permeable wrap 50.
[00136] As also illustrated in Figure 2, a circumferential row of air inlets 52 is provided in the outer envelope 12 circumscribing the inner envelope 50.
[00137] In use, when a user draws the air in the nozzle 10, the cold air is passed into the smoke article 54 according to the second embodiment of the invention through the air intakes 52. The air passes upstream between the outside of the open-ended hollow tube 56 and the inner casing 50 through the cylindrical plug of the cellulose acetate filament 60 to the aerosol forming substrate 6.
[00138] As in the smoke article 2 according to the first embodiment of the invention illustrated in Figure 1 and described above, the aerosol forming substrate 6 is heated by conduction to form an aerosol that is entrained in the air as it flows through of the aerosol-forming substrate 6. The air and the entrained aerosol passes downstream through the interior of the hollow tube 56 of the airflow directing element 44 to the expansion chamber 8, where they cool and condense. The cooled aerosol then passes downstream through the nozzle 10 of the smoke article 54 into the user's mouth.
[00139] The protective coating, substantially impermeable to non-combustible air 14 provided across the rear face of the combustible carbon heat source 40 isolates the combustible carbon heat source 40 from the air flow paths through the smoke article 54 of so that, in use, the air passed through the smoke article 54 along the air flow paths does not come into direct contact with the combustible carbonary heat source 40.
[00140] The second heat conducting element 30 retains heat within the smoking article 54, as described above with respect to the smoking article 2 of the first embodiment illustrated in Figure 1.
[00141] The smoking articles according to the second embodiment of the invention illustrated in Figure 2 were assembled from the components illustrated below in table 1.

[00142] The smoking article 60 according to the third embodiment of the invention illustrated in Figure 3 is similar in construction to the smoking article 54 according to the second embodiment of the invention illustrated in Figure 2. However, the smoking article 60 illustrated in Figure 3 differs from the smoke article 54 illustrated in Figure 2 in the construction of the air flow directing element 44, as described below. Additionally, unlike the smoke article 54 shown in Figure 2, the second heat conducting element 30 'of the smoke article 60 extends for about 3 mm beyond the first heat conducting element 22 in a direction downstream of the second heat conducting element 30 ', therefore, covers a larger proportion of the aerosol-forming substrate 6.
[00143] In the third embodiment of the invention, the air flow directing element 44 comprises a truncated cone, substantially impermeable to air, with an open end 62, which is positioned centrally within the smoke article 60. The downstream end of the cone hollow 62 has substantially the same diameter as the aerosol forming substrate 6 and the downstream end of the hollow cone 62 has a reduced diameter compared to the aerosol forming substrate 6. The hollow cone 62 can be formed from any material impervious to adequate air including, but not limited to, cardboard, plastic and combinations thereof.
[00144] The upstream end of the truncated, substantially airtight hollow cone 62 extends into the aerosol forming substrate 6.
[00145] A circumferential row of the air inlets 52 is provided in the outer envelope 12 circumscribing the hollow cone 62, downstream of the aerosol-forming substrate 6.
[00146] In use, when a user pulls on the nozzle 10 of the smoking article 60 according to the third embodiment of the invention, the cold air is drawn into the smoking article 60 through the air inlets 52. The cold air passes upstream between the outer casing 12 and the outside of the hollow cone 62 of the airflow directing element 44 into the aerosol forming substrate 6.
[00147] As in smoke article 54 according to the second embodiment of the invention illustrated in Figure 2 and described above, the aerosol forming substrate 6 is heated by conduction to form an aerosol that is entrained in the air as it flows through the aerosol forming substrate 6. The air and the aerosol entrained downstream along the interior of the hollow cone 62 of the airflow directing element 44 to the expansion chamber 8, where they cool and condense. The cooled aerosol then passes downstream through the nozzle 10 of the smoke article 60 into the user's mouth.
[00148] The second heat conducting element 30 'retains heat within the smoke article 54, as described above with respect to smoke article 2 of the first embodiment illustrated in Figure 1. In addition, the second heat conducting element 30 'transfers heat along the aerosol forming substrate 6, in addition to the downstream end of the first heat conducting element 22. Heat is therefore dispersed through a larger volume of the aerosol forming substrate 6 and a distribution of Aerosol inhalation is more consistent and provided as described above.
[00149] It was found that during the smoking of the smoking article 60 of the third embodiment illustrated in Figure 3, the temperature of the rear part 4b of the combustible heat source 40 (as measured by a thermal coupling provided in approximately 1 mm at from the downstream end of the combustible heat source 40) is approximately 50 ° C higher than the corresponding temperature in an identical smoke article without the second heat conducting element 30 '. It has further been found that the temperature of the front of the aerosol-forming substrate 6 (as measured by a thermal coupling supplied approximately 2 mm from the upstream end of the aerosol-forming substrate 6) is between 20 C and 50 C above the corresponding temperature in an identical smoke article without the second heat conducting element 30 '.
[00150] It has further been found that the smoking duration of smoking article 60 of the third embodiment of the invention is increased by approximately 1 minute, or 2 drops, compared to the smoking duration of an identical smoking article without the second heat conducting element 30 '.
[00151] It was further discovered that smoking article 60 of the third embodiment of the invention distributes approximately 25% more nicotine during smoking compared to an identical smoking article without the second heat conducting element. Similarly, smoking article 60 is responsible for distributing approximately 30% more glycerin during smoking compared to an identical smoking article without the second heat conducting element 30 '.
[00152] The smoking articles according to the third modality can be assembled from the individual components described, the parameters of which can be determined by analogy to the information provided in Table 1 for the second modality.
[00153] The modalities illustrated in Figures 1 to 3 and described above illustrate, but do not limit, the invention. Other modalities of the invention can be made without departing from the spirit and scope of the same, and it should be understood that the specific modalities described here are not limiting.

权利要求:
Claims (16)
[0001]
1. Smoke article (2, 54, 60), comprising: a blind combustible heat source (40) in which no longitudinal airflow channel is provided in the heat source, so that the air passing through the smoke article during use do not pass through any of the airflow channels along the heat source. an aerosol-forming substrate (6) downstream of the heat source; and a first heat conducting element (22) around and in contact with a rear part of the heat source and an adjacent front part of the aerosol forming substrate; characterized by the fact that it further comprises: a second heat conducting element (30, 30 ') around at least a part of the first heat conducting element (22), wherein at least part of the second heat conducting element (22) heat is radially separated from the first heat conducting element.
[0002]
Smoke article (2, 54, 60) according to claim 1, characterized in that the entire second heat conducting element (30, 30 ') is radially separated from the first heat conducting element (22 ) so that there is no direct contact between the first and the second heat conducting elements.
[0003]
Smoke article (2, 54, 60) according to claim 1 or 2, characterized in that the first heat conducting element (22) and the second heat conducting element (30, 30 ') be radially separated by at least one layer of thermal insulation material.
[0004]
4. Smoke article (2, 54, 60), according to claim 3, characterized in that the thermal insulation material is a paper wrapper (12).
[0005]
Smoke article (2, 54, 60) according to any one of claims 1 to 4, characterized in that the second heat conducting element (30, 30 ') comprises one or more layers of a heat reflection.
[0006]
6. Smoke article (2, 54, 60), according to claim 5, characterized in that the heat reflection material reflects more than 50% of the incident radiation.
[0007]
Smoke article (2, 54, 60) according to any one of claims 1 to 6, characterized in that the second heat conducting element (30, 30 ') comprises one or more layers of aluminum.
[0008]
Smoke article (2, 54, 60) according to any one of claims 1 to 7, characterized in that the second heat conducting element (30, 30 ') overlaps at least part of the substrate of aerosol formation (6) and at least part of the heat source (4, 40).
[0009]
Smoke article (2, 54, 60) according to any one of claims 1 to 8, characterized in that the second heat conducting element (30, 30 ') has a maximum thickness of 5 to 50 microns .
[0010]
Smoke article (2, 54, 60) according to any one of claims 1 to 9, characterized in that the first heat conducting element (22) and the second heat conducting element (30, 30 ') be radially separated by at least 50 microns.
[0011]
Smoke article (2, 54, 60) according to any one of claims 1 to 10, characterized in that it additionally comprises an outer paper wrap around the second heat conducting element (30, 30 ') .
[0012]
12. Smoke article (2, 54, 60) according to any one of claims 1 to 10, characterized in that the second heat conducting element (30, 30 ') is provided outside the smoke article, so that the second heat conducting element is visible on the outer surface of the smoke article.
[0013]
Smoke article according to any one of claims 1 to 12, characterized in that the second heat conducting element (30, 30 ') is formed from a laminated material comprising one or more layers of a material heat conduction.
[0014]
Smoke article (60) according to any one of claims 1 to 13, characterized in that the second heat conducting element (30 ') extends beyond the first heat conducting element (22) in a downstream direction.
[0015]
Smoke article (2, 54) according to any one of claims 1 to 14, characterized in that the edges upstream of the first heat conducting element (22) and the second heat conducting element (30 ) are substantially aligned.
[0016]
16. Method for adjusting the aerosol distribution of the draft by swallowing a smoking article during the draft, the method comprising the provision of a smoking article (2, 54, 60), according to claim 1 , and adjusting the amount by which the second heat conducting element (30 ') extends beyond the first heat conducting element (22) in a downstream direction, through the aerosol forming substrate (6).

类似技术:

公开号 | 公开日 | 专利标题

BR112014019923B1|2020-09-01|SMOKE ARTICLE, AND METHOD OF ADJUSTING THE DISTRIBUTION OF AEROSOL OF TUG BY THE LOSS OF A SMOKE ARTICLE

CN104080359B|2019-12-03|Air flows improved smoking article

RU2637982C2|2017-12-08|Smoking article containing air flow guiding element

ES2634662T3|2017-09-28|Smoking item with a pair of heat conductive elements and an improved air flow

ES2740130T3|2020-02-05|Smoking article with a pair of non-overlapping radially conductive heat elements

BR112016001068B1|2021-08-03|SMOKING ARTICLE WITH SINGLE RADIALLY SEPARATE HEAT CONDUCTING ELEMENT

BR112016011533B1|2021-05-18|smoking article with a valve

EP2644043A1|2013-10-02|Heatable smoking article with improved wrapper

同族专利:

公开号 | 公开日

DK2814343T3|2016-05-30|

JP2017158593A|2017-09-14|

MX2014009772A|2015-02-20|

RU2018110095A3|2021-07-12|

IL233948A|2020-08-31|

HUE027597T2|2016-10-28|

CN104203016A|2014-12-10|

CA2864371A1|2013-08-22|

AU2013220522B2|2016-10-06|

KR20190085564A|2019-07-18|

MY167620A|2018-09-20|

UA114312C2|2017-05-25|

JP6435021B2|2018-12-05|

NZ628302A|2016-03-31|

RU2018110095A|2019-09-23|

IL233948D0|2014-09-30|

EP2814343B1|2016-04-13|

SG11201404866UA|2014-10-30|

JP2019050817A|2019-04-04|

TWI590769B|2017-07-11|

HK1200664A1|2015-08-14|

KR102002850B1|2019-07-23|

RU2649933C1|2018-04-05|

RU2014137105A|2016-04-10|

CA2864371C|2019-04-16|

CN112690505A|2021-04-23|

CN112690504A|2021-04-23|

PL2814343T5|2019-11-29|

WO2013120849A1|2013-08-22|

KR20190120413A|2019-10-23|

JP6198753B2|2017-09-20|

EP2814343B2|2019-05-22|

PL2814343T3|2016-10-31|

US10849357B2|2020-12-01|

IN2014DN06791A|2015-05-22|

JP6818726B2|2021-01-20|

AU2013220522A1|2014-09-25|

RS54709B1|2016-08-31|

KR20170015565A|2017-02-08|

ES2576115T3|2016-07-05|

ES2576115T5|2020-01-23|

PH12014501756B1|2014-11-10|

US20210076749A1|2021-03-18|

KR102035502B1|2019-10-24|

TW201340891A|2013-10-16|

RU2607608C2|2017-01-10|

AR089982A1|2014-10-01|

CN104203016B|2021-02-05|

JP2015510399A|2015-04-09|

DK2814343T4|2019-08-26|

EP2814343A1|2014-12-24|

KR20140132711A|2014-11-18|

US20150053219A1|2015-02-26|

PH12014501756A1|2014-11-10|

RS54709B2|2019-08-30|

KR102156639B1|2020-09-17|

引用文献:

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

IN166122B|1985-08-26|1990-03-17|Reynolds Tobacco Co R|

US4793365A|1984-09-14|1988-12-27|R. J. Reynolds Tobacco Company|Smoking article|

IE65679B1|1984-09-14|1995-11-15|Reynolds Tobacco Co R|Cigarette type smoking article|

CN1018607B|1984-12-21|1992-10-14|美国耳·杰·瑞诺兹烟草公司|Smoking article|

US5119834A|1985-04-15|1992-06-09|R. J. Reynolds Tobacco Company|Smoking article with improved substrate|

US4928714A|1985-04-15|1990-05-29|R. J. Reynolds Tobacco Company|Smoking article with embedded substrate|

US5020548A|1985-08-26|1991-06-04|R. J. Reynolds Tobacco Company|Smoking article with improved fuel element|

US4771795A|1986-05-15|1988-09-20|R. J. Reynolds Tobacco Company|Smoking article with dual burn rate fuel element|

US4819665A|1987-01-23|1989-04-11|R. J. Reynolds Tobacco Company|Aerosol delivery article|

US4966171A|1988-07-22|1990-10-30|Philip Morris Incorporated|Smoking article|

US5040552A|1988-12-08|1991-08-20|Philip Morris Incorporated|Metal carbide heat source|

US5024242A|1989-04-27|1991-06-18|Philip Morris Incorporated|Methods and apparatus for making multiple component smoking articles|

US5144962A|1989-12-01|1992-09-08|Philip Morris Incorporated|Flavor-delivery article|

US5027837A|1990-02-27|1991-07-02|R. J. Reynolds Tobacco Company|Cigarette|

JP3325591B2|1990-08-24|2002-09-17|フィリップ・モーリス・プロダクツ・インコーポレイテッド|Smoking articles|

CA2079495A1|1991-10-03|1993-04-04|John H. Kolts|Smoking article with co oxidation catalyst|

US5240012A|1991-11-13|1993-08-31|Philip Morris Incorporated|Carbon heat smoking article with reusable body|

US5345955A|1992-09-17|1994-09-13|R. J. Reynolds Tobacco Company|Composite fuel element for smoking articles|

KR100587849B1|2001-12-28|2006-06-12|니뽄 다바코 산교 가부시키가이샤|Smoking implement|

US7503330B2|2003-09-30|2009-03-17|R.J. Reynolds Tobacco Company|Smokable rod for a cigarette|

JP4388960B2|2003-09-30|2009-12-24|アール・ジエイ・レイノルズ・タバコ・カンパニー|Smoking sticks for cigarettes|

EP2719415A1|2005-02-02|2014-04-16|Oglesby&Butler Research&Development Limited|A device for vaporising vaporisable matter|

WO2007119678A1|2006-04-11|2007-10-25|Japan Tobacco Inc.|Carbonaceous heat source composition for non-combustible smoking article and non-combustible smoking article|

US8061361B2|2007-08-10|2011-11-22|Philip Morris Usa Inc.|Distillation-based smoking article|

US8617263B2|2008-09-18|2013-12-31|R. J. Reynolds Tobacco Company|Method for preparing fuel element for smoking article|

US8528567B2|2009-10-15|2013-09-10|Philip Morris Usa Inc.|Smoking article having exothermal catalyst downstream of fuel element|

JP5855637B2|2010-03-26|2016-02-09|フィリップ・モーリス・プロダクツ・ソシエテ・アノニム|Smoking articles containing heat-resistant sheet material|

ES2741139T3|2010-03-26|2020-02-10|Japan Tobacco Inc|Smoking item|

TW201134408A|2010-04-07|2011-10-16|Japan Tobacco Inc|Smoking article|

US9149072B2|2010-05-06|2015-10-06|R.J. Reynolds Tobacco Company|Segmented smoking article with substrate cavity|

EP2597976B1|2010-07-30|2021-03-10|Japan Tobacco, Inc.|Smokeless flavor inhalator|

WO2012090294A1|2010-12-28|2012-07-05|日本たばこ産業株式会社|Smoking article provided with carbon heat source|ES2741139T3|2010-03-26|2020-02-10|Japan Tobacco Inc|Smoking item|

GB201217067D0|2012-09-25|2012-11-07|British American Tobacco Co|Heating smokable material|

US10034988B2|2012-11-28|2018-07-31|Fontem Holdings I B.V.|Methods and devices for compound delivery|

BR112016000833B1|2013-08-13|2021-06-15|Philip Morris Products S.A.|SMOKING ARTICLE THAT COMPRISES A BLINDER FUEL HEAT SOURCE|

WO2015042412A1|2013-09-20|2015-03-26|E-Nicotine Technology. Inc.|Devices and methods for modifying delivery devices|

US9788571B2|2013-09-25|2017-10-17|R.J. Reynolds Tobacco Company|Heat generation apparatus for an aerosol-generation system of a smoking article, and associated smoking article|

CN112155257A|2013-12-05|2021-01-01|菲利普莫里斯生产公司|Heated aerosol-generating article with thermal diffusion packaging|

MX2016007149A|2013-12-05|2016-09-08|Philip Morris Products Sa|Thermal laminate rods for use in aerosol-generating articles.|

MX2016007081A|2013-12-05|2016-09-06|Philip Morris Products Sa|Heated aerosol generating article with thermal spreading endpiece.|

US10117463B2|2014-01-03|2018-11-06|Robert P Thomas, Jr.|Vapor delivery device|

US9820510B2|2014-01-03|2017-11-21|Robert P Thomas, Jr.|Vapor delivery device|

US10094562B2|2014-02-11|2018-10-09|R.J. Reynolds Tobacco Company|Igniter apparatus for a smoking article, and associated method|

EP3185705B1|2014-08-27|2019-10-23|Philip Morris Products S.A.|Method for applying heat conducting patches to a material web|

WO2016151688A1|2015-03-20|2016-09-29|日本たばこ産業株式会社|Apparatus for producing paper web for planospiral paper tubes and production method for same|

CN107427076B|2015-04-06|2020-07-28|日本烟草产业株式会社|Fragrance aspirator, inner holding member, method for manufacturing fragrance aspirator, and method for manufacturing inner holding member|

KR102242830B1|2015-04-06|2021-04-20|니뽄 다바코 산교 가부시키가이샤|Flavor inhaler|

TW201703660A|2015-06-23|2017-02-01|菲利浦莫里斯製品股份有限公司|Aerosol-generating article and method for manufacturing aerosol-generating articles|

US10154689B2|2015-06-30|2018-12-18|R.J. Reynolds Tobacco Company|Heat generation segment for an aerosol-generation system of a smoking article|

US20170055576A1|2015-08-31|2017-03-02|R. J. Reynolds Tobacco Company|Smoking article|

US20170055575A1|2015-08-31|2017-03-02|British American TobaccoLimited|Material for use with apparatus for heating smokable material|

CN105410992B|2015-12-03|2019-06-18|安徽中烟工业有限责任公司|A kind of carbon heat source having both self-extinguishment and anti-drop function|

US10314334B2|2015-12-10|2019-06-11|R.J. Reynolds Tobacco Company|Smoking article|

RU2721842C2|2015-12-23|2020-05-25|Филип Моррис Продактс С.А.|Aerosol-generating component for use in an aerosol-generating article|

DK3187057T3|2015-12-31|2018-05-28|Philip Morris Products Sa|AEROSOL GENERATING ITEMS INCLUDING A HEAT CONDUCTIVE ELEMENT AND A SURFACE TREATMENT|

WO2017187556A1|2016-04-27|2017-11-02|日本たばこ産業株式会社|Flavor inhaler|

WO2017187555A1|2016-04-27|2017-11-02|日本たばこ産業株式会社|Flavor inhaler|

US10194691B2|2016-05-25|2019-02-05|R.J. Reynolds Tobacco Company|Non-combusting smoking article with thermochromatic label|

WO2017207672A1|2016-05-31|2017-12-07|Philip Morris Products S.A.|Aerosol-generating article with an insulated heat source|

EP3462936B1|2016-05-31|2021-04-14|Philip Morris Products S.A.|Aerosol generating article with heat diffuser|

US10212964B2|2016-07-07|2019-02-26|Altria Client Services|Additive assembly for electronic vaping device|

MX2019005555A|2016-11-18|2019-08-12|Philip Morris Products Sa|Heating assembly, aerosol-generating device and a method for heating an aerosol-forming substrate.|

US10512286B2|2017-10-19|2019-12-24|Rai Strategic Holdings, Inc.|Colorimetric aerosol and gas detection for aerosol delivery device|

CN109924544A|2017-12-18|2019-06-25|深圳市赛尔美电子科技有限公司|Smoking set and its control method|

US20190254335A1|2018-02-22|2019-08-22|R.J. Reynolds Tobacco Company|System for debossing a heat generation member, a smoking article including the debossed heat generation member, and a related method|

CN109222210B|2018-08-13|2020-07-17|云南中烟工业有限责任公司|Modified carbon material, preparation method and application thereof|

US20200128880A1|2018-10-30|2020-04-30|R.J. Reynolds Tobacco Company|Smoking article cartridge|

US20210307379A1|2018-11-19|2021-10-07|Kt&G Corporation|Externally heated aerosol generation device and cigarette used in aerosol generation device|

WO2020115150A1|2018-12-06|2020-06-11|Philip Morris Products S.A.|Aerosol-generating article with laminated wrapper|

KR102343350B1|2019-10-14|2021-12-24|주식회사 케이티앤지|Aerosol generating article comprising multiple susceptors|

KR20210108046A|2020-02-25|2021-09-02|주식회사 케이티앤지|Aerosol-generating article with flavor optimization and aerosol-generating system including the same|

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

2019-12-03| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|

2020-06-16| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

2020-09-01| 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 12/02/2013, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

申请号 | 申请日 | 专利标题

EP12155234|2012-02-13|

EP12155234.3|2012-02-13|

PCT/EP2013/052786|WO2013120849A1|2012-02-13|2013-02-12|Smoking article including dual heat-conducting elements|

[返回顶部]