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    • 专利摘要:
    SMOKING ARTICLE WITH A FRONT CAP AND SUBSTRATE AEROSOL FORMATOR AND PROCESS. The present invention relates to an article for smokers (1, 100, 300) comprising a plurality of elements, including a frontal plug (2, 102, 302) and an aerosol-forming substrate (7). A hole (103, 303) or slot (23) is defined through the front plug (2, 102, 302), through which a heating element (8) can be inserted. In use, a heating element (8) is inserted into the smoking article (1, 100, 300) through the hole (103, 303) or slit (23) and the aerosol-forming substrate (7) is heated to generate a aerosol. When the heating element is subsequently removed from the smoking article (1, 100, 300), the front plug (2, 102, 302) acts to retain the aerosol-forming substrate (7) within the smoking article (1, 100 , 300).
    公开号:BR112014012956B1
    申请号:R112014012956-8
    申请日:2012-12-28
    公开日:2021-01-12
    发明作者:Gérard Zuber；Thomas Badertscher；Cédric Meyer；Alexis Louvet
    申请人:Philip Morris Products S.A.；
    IPC主号:
    专利说明:

    [0001] [001] The present invention relates to a smoking article, which comprises an aerosol generating substrate for generating an inhalable aerosol when heated by a heating element. The invention also relates to a process for using that article for smoking.
    [0002] [002] Smoking articles, in which an aerosol-forming substrate, such as a substrate containing tobacco, is heated, instead of being burned, are known in the art. The object of these heated smoking articles is to reduce the known harmful ingredients of smoke produced by the combustion and pyrolytic degradation of tobacco in conventional cigarettes. Typically, in such heated smoking articles an aerosol is generated by transferring heat from a heat source to a physically separate aerosol-forming substrate or material, which may be located in or around the heat source. During smoking, volatile compounds are released from the aerosol-forming substrate by transferring heat from the heat source and carried in the air aspirated through the smoking article. When the released compounds cool, they condense to form an aerosol that is inhaled by the consumer.
    [0003] [003] Several documents in the prior art describe aerosol generating devices for consuming or smoking heated smoking articles. Such devices include, for example, heated smoking systems and electrically heated smoking systems. An advantage of these systems is that they significantly reduce secondary current smoke, while allowing the smoker to selectively suspend and restart smoking. An example of a smoking system is described in U.S. Patent #No. 5,144,96, which includes an aroma-generating medium in contact with a heater. When the aroma generating medium is depleted, both the aroma generating medium and the heater are replaced. An aerosol generating device is desirable, in which a smoking article can be replaced without the need to remove the heating element.
    [0004] [004] Typically, smoking articles for use with aerosol generating devices comprise an aerosol-forming substrate, which is often assembled with other elements or components in the form of a stick. Typically, this stick is configured in shape and size to be inserted into an aerosol generating device, which comprises a heating element to heat the aerosol-forming substrate.
    [0005] [005] A direct contact between the heating element, for example, an electrically activated heating element, and the aerosol-forming substrate can provide an efficient means of heating the aerosol-forming substrate to form an inhalable aerosol. In this device configuration, heat from a heating element can be transported almost instantly to at least part of the aerosol-forming substrate, when the heating element is activated, and this can facilitate the rapid generation of an aerosol. In addition, the total heating energy required to generate an aerosol may be lower than would be the case in a system, in which the aerosol-forming substrate does not directly contact a heating element and the initial heating of the aerosol-forming substrate occurs by convection or radiation. When the heating element is in direct contact with an aerosol-forming substrate, the initial heating of parts of the aerosol-forming substrate, which are in contact with the heating element, is carried out pro conduction.
    [0006] [006] Direct contact between a heating element and an aerosol-forming substrate due to thermal contractions can cause the aerosol-forming substrate to adhere to a heating element. This can make it difficult to remove the smoker article from the heating element. Adhesion problems between a heating element and an aerosol-forming substrate can be particularly pronounced when the aerosol-forming substrate is in the form of an assembled sheet of homogenized tobacco material. Heating of this substrate can be achieved by inserting a heating element in the folds of the assembled sheet material. Contraction of that substrate during heating can then cause the substrate to grip the heating element closely, making it difficult to cleanly remove the heating element from the heating element.
    [0007] [007] Contraction of the aerosol-forming substrate can also release the aerosol-forming substrate into the smoking article. A preferred embodiment of a smoking article may be formed by several cylindrical elements arranged in sequence and assembled by being rolled up with cigarette paper. Cigarette paper preferably retains the elements in position due to an interference interaction. Inside the smoking article, or a cylindrical plug, which comprises the aerosol-forming substrate, is retained by contact with the cigarette paper. Contraction of the aerosol-forming substrate during heating may mean that the aerosol-forming substrate, or a part thereof, is more likely to be removed from the smoking article rod when the smoking article is removed from the heating element. This would result in the need to clean the aerosol generating device, which comprises the heating element, before the aerosol generating device can be used to smoke another smoking article. An aerosol-forming substrate, which is attached to a heating element, produces a physical barrier to the reuse of the heating element, as it can prevent the heating element from being inserted into a new smoking article.
    [0008] [008] It is also undesirable that small parts of the aerosol-forming substrate and residues of the aerosol-forming substrate remain in contact with the heating element, since they can decompose over prolonged heating and produce unpleasant aromas, which are discoverable by a user.
    [0009] [009] As used herein the terms 'aerosol-generating article' and 'smoking article' refer to an article comprising an aerosol-forming substrate that is capable of releasing volatile compounds, which can form an aerosol. For example, an aerosol-generating article may be a smoking article that generates an aerosol that can be inhaled directly into a user's lungs through the user's mouth. An aerosol-generating article may be disposable.
    [0010] [0010] As used herein, an aerosol-generating article is a heated aerosol-generating article, which is an aerosol-generating article comprising an aerosol-forming substrate that is intended to be heated, rather than burned, in order to to release volatile compounds that can form an aerosol. The aerosol formed by heating the aerosol-forming substrate may contain fewer harmful ingredients, which would be produced by combustion or pyrolytic degradation of the aerosol-forming substrate. An aerosol-generating article may comprise a tobacco stick.
    [0011] [0011] As used herein, an 'aerosol generating device' refers to a device that interacts with an aerosol-forming substrate to generate an aerosol. The aerosol-forming substrate is part of an aerosol-generating article, for example, part of a smoking article. An aerosol generating device may comprise one or more components used to supply energy from an energy supply to an aerosol-forming substrate to generate an aerosol.
    [0012] [0012] An aerosol generating device can be described as a heated aerosol generating device, which is an aerosol generating device comprising a heater. The heater is preferably used to heat an aerosol-forming substrate of an aerosol-generating article to generate an aerosol.
    [0013] [0013] An aerosol generating device may be an electrically heated aerosol generating device, which is an aerosol generating device comprising a heater that is operated by electrical energy to heat an aerosol forming substrate of an aerosol generating article, for generate an aerosol. An aerosol generating device can be a gas heated aerosol generating device. An aerosol generating device can be a smoking device that interacts with an aerosol-forming substrate of an aerosol generating article to generate an aerosol, which can be inhaled directly into a user's lungs through the user's mouth.
    [0014] [0014] As used herein, the term 'aerosol-forming substrate' refers to a substrate capable of releasing volatile compounds that can form an aerosol. These volatile compounds can be released by heating the aerosol-forming substrate. An aerosol-forming substrate can be adsorbed, coated, impregnated or otherwise loaded onto a vehicle or support. An aerosol-forming substrate may conveniently be part of an aerosol-generating article or smoking article.
    [0015] [0015] An aerosol-forming substrate may comprise nicotine. An aerosol-forming substrate may comprise tobacco, for example, comprise a tobacco-containing material, which contains tobacco-flavored compounds, which are released from the aerosol-forming substrate upon heating. In preferred embodiments, an aerosol-forming substrate may comprise homogenized tobacco material, for example, cast leaf tobacco.
    [0016] [0016] The invention relates to a smoking article and a process for using a smoking article. In one embodiment, a smoking article is provided, which comprises a plurality of elements, including a frontal plug and an aerosol-forming substrate. The front plug defines a hole or slot through a heating element that can be inserted.
    [0017] [0017] The smoking article can comprise a stick. In one embodiment, the plurality of elements including the front plug and the aerosol-forming substrate are mounted in contact with cigarette paper to form the stick. The rod can be defined as having an entry end and a distal end located upstream of the entry end. The front plug is located upstream of the aerosol-forming substrate within the stick.
    [0018] [0018] In use, a user applies his lips to the opening end of the stick and inhales. Air and any aerosol generated inside the stick are sucked through the opening tip of the stick, to be inhaled by the user. When the user inhales, air and aerosol move through the stick in a direction, usually from the distal end to the opening end of the stick. In some embodiments, air can be drawn into the stick through the distal end of the stick. In some embodiments, air can be drawn into the stick through a side wall of the stick. In other embodiments, air can be sucked into the stick through a combination of the distal end of the stick and a side wall of the stick.
    [0019] [0019] For the sake of simplification, the terms "upstream" and "downstream", as used herein, refer to a relative position along the rod of the smoking article, with reference to the direction in which the aerosol is aspirated through the stick. Any element or component that is closest to the distal end of a specific reference point, can be defined as upstream of that point. Likewise, any element or component that is closest to the opening end of a reference point, can be defined as downstream of that point. In this modality, the frontal plug is located closer to the distal end of the stick than the aerosol-forming substrate. Therefore, the frontal plug can be defined as being upstream of the aerosol-forming substrate.
    [0020] [0020] In some modalities, the smoking article may include other elements. For example, the article may further comprise a filter, such as a mouthpiece filter, located downstream of the aerosol-forming substrate. This filter is preferably located at the opening end of the stick. When present, a filter is preferably mounted together with the front plug and the aerosol-forming substrate on the stick. Appropriate filters can be made of any suitable filter material. Many of these filter materials are known in the art, for example, a suitable filter can be made from a cellulose acetate tow extension. Other elements, such as free flow filters and spacers, can also be mounted with the front plug and the aerosol forming substrate as part of the smoking article.
    [0021] [0021] Preferably, the elements that form the smoking article are mounted inside a cigarette wrapper to form a stick. A suitable cigarette wrapper may be cigarette paper or may comprise tobacco. Suitable cigarette wrappers are known in the art.
    [0022] [0022] An advantage of the frontal plug is that it can prevent the exit of the aerosol-forming substrate from the distal end during handling and shipping. Another advantage of the front plug is that it can assist in locating the aerosol-forming substrate at a predetermined distance from the distal end of the stick, for engagement with a heat source, such as a heating element.
    [0023] [0023] Preferred embodiments are smoking articles for use with an aerosol generating device, which comprises one or more heating elements, which are configured to contact the aerosol-forming substrate. For the avoidance of doubt, in the following description the term heating element is used to designate one or more heating elements.
    [0024] [0024] It may be preferable for the heating element to contact or penetrate the aerosol-forming substrate. In these embodiments, the aerosol-forming substrate may contract to contact a heating element during an aerosol-generating phase. The aerosol-forming substrate can also contract, so that its contact with cigarette paper is reduced. Without a front plug, the removal of the heating element from the stick can also result in the removal of the aerosol-forming substrate, due to the increased adhesion of the outlet with the heating element, coupled with a decreased adhesion of the aerosol-forming substrate with the paper of cigarette However, the front cap can facilitate the removal or extraction of the heating element from the stick, limiting the movement of the aerosol-forming substrate towards the distal end of the stick. The front stick blocks the passage of the aerosol-forming substrate and therefore prevents the aerosol-forming substrate from being removed from the stick.
    [0025] [0025] The front plug can be made of a filter material, which allows air to be sucked through the front plug. The front plug can conveniently be formed of the same material as a conventional fork filter. For example, the frontal plug may be formed by an extension of cellulose acetate tow. The permeability of the frontal plug can be varied to help control resistance to aspiration through the smoking article. Alternatively, the front plug can be formed of a material that is not permeable to air, although some air can be sucked through the hole or slot defined in the front plug, depending on tolerances between the hole or slot and a heating element inserted through the same.
    [0026] [0026] The frontal plug may comprise one or more materials selected from the group consisting of ceramics, polymer, biopolymer, metal, zeolite, paper, cardboard, inert material and inorganic material. The front plug has a diameter that is approximately equal to the diameter of the smoker article. Preferably, the front plug has a diameter between about 5 mm and about 10 mm. The front plug has a length that can be defined as the dimension along the longitudinal axis of the smoking article. The length of the front plug can be between about 1 millimeter and about 10 millimeters, for example, between about 4 millimeters and about 8 millimeters. It is preferable that the front plug is substantially cylindrical and has a length of at least 4 mm. A longer plug can also offer an improved cleaning effect, since there is more of the front plug material available to clean the heating element when the heating element is removed from the plug. It is preferable that the diameter of the plug is greater than 5 mm, for example, between 6 mm and 8 mm.
    [0027] [0027] In some embodiments, the front plug may be partially or fully formed of an aerosol forming substrate, for example, the aerosol forming substrate may be a material comprising tobacco or processed tobacco and the front plug may comprise that material. If an aerosol-forming substrate is incorporated into the front buffer, the density of the aerosol-forming substrate can be increased at the distal end of the stick, to enable the aerosol-forming substrate to function as a front buffer.
    [0028] [0028] Some embodiments of the smoking article are intended to be used in conjunction with an aerosol generating device with a heating element, to heat the aerosol-forming substrate. These heating elements are typically in the form of pins or blades, which can be inserted into the smoker article through the front plug. To facilitate this, the hole or slot defined through the front plug can be dimensioned to facilitate the insertion of a heating element. A heating element is then able to contact the aerosol-forming substrate or penetrate it with a low insertion force, necessary to penetrate the frontal plug. For example, the size and shape of the hole defined through the front plug can be almost exactly compatible with the size and shape of a cross section of the heating element.
    [0029] [0029] The hole may be smaller than the heating element, or it may be a crack. In some embodiments, the heating element may need to deform the material of the front plug in order to penetrate the front plug. Any hole defined through the front plug can be cylindrical or prismatic in shape. For example, the hole defined through the front plug can be formed such as a circular cylinder or a hexagonal cylinder. Any slot defined through the front plug can be a single slot or multiple slits.
    [0030] [0030] The material that forms the front plug can be an elastic material or a partially elastic material, which can be deformed by inserting a heating element and recovering its shape when the heating element is removed. Therefore, when a heating element is of similar dimensions, or slightly larger dimensions, to the defined hole or slit through the front plug, the material of the front plug may deform to allow access to the heating element. When the heating element is removed, the hole or slit through the front plug can recover its previous dimensions. An advantage of these modalities may be the fact that the material that forms the front cap can clean the heating element when the element is removed from the smoking article. This can help to remove any fragments of the aerosol-forming substrate that have adhered to the heating element and can help to clean up any volatile compounds that have been deposited on the heating element. The heating element can therefore be cleaned each time the heating element is removed from a smoking article.
    [0031] [0031] The front cover does not have to be formed of a resistant material in order to offer cleaning functionality. For example, if a hole through a front plug is dimensioned to be almost exactly compatible with a cross section of a heating element, then some cleaning functionality can be provided when removing the heating element. Also, when the front plug defines a slot, through which the heating element can pass, the material of the front plug surrounding the slot is deflected when a heating element is inserted. Subsequent removal of the heating element can also result in interference between the heating element and the material surrounding the crack, which may enable the heating element to be cleaned or rubbed.
    [0032] [0032] The front plug may have more than one hole or slot defined through it. For example, when the smoking article is intended for use with an aerosol generating device with three heating pins, the front plug of a compatible smoking article may comprise three holes arranged to accept the passage of the heating pins.
    [0033] [0033] The aerosol-forming substrate can be a solid aerosol-forming substrate. Alternatively, the aerosol-forming substrate may comprise both solid and liquid components. The aerosol-forming substrate may comprise a tobacco-containing material, which contains volatile tobacco flavor compounds, which are released from the substrate upon heating. Alternatively, the aerosol-forming substrate may comprise a non-tobacco material. The aerosol forming substrate may further comprise an aerosol former. Examples of suitable aerosol builders are glycerin and propylene glycol.
    [0034] [0034] If the aerosol-forming substrate is a solid aerosol-forming substrate, the solid aerosol-forming substrate may comprise, for example, one or more of: powder, granules, pellets, shreds, spaghetti-like strands, strips or leaves which contain one or more of: herbal leaf, tobacco leaf, tobacco leaf fragments, reconstituted tobacco, homogenized tobacco, extruded tobacco and expanded tobacco. The solid aerosol-forming substrate may be in loose form or may be supplied in an appropriate container or cartridge. Optionally, the solid aerosol-forming substrate may contain volatile tobacco or non-tobacco flavor compounds to be released upon heating the solid aerosol-forming substrate. The solid aerosol-forming substrate may also contain capsules that include, for example, the volatile aroma compounds of tobacco or non-tobacco, and those capsules may melt while heating the solid aerosol-forming substrate.
    [0035] [0035] Optionally, the aerosol forming substrate can be made available on a thermally stable vehicle or be embedded in it. The vehicle can take the form of dust, granules, pellets, scrap, spaghetti-like strings, strips or leaves. Alternatively, the vehicle may be a tubular vehicle with a thin layer of solid substrate deposited on its internal surface or on its external surface or on both its internal and external surfaces. This tubular vehicle may be formed, for example, of paper, or paper-like material, a non-woven carbon fiber mat, a low-mass, open-mesh wire mesh, or a perforated metal film or any other thermally stable polymeric matrix.
    [0036] [0036] The solid aerosol-forming substrate can be deposited on the vehicle surface in the form of a coupling part, a sheet, foam, gel or paste. The solid aerosol-forming substrate can be deposited on the entire surface of the vehicle or, alternatively, can be deposited in a pattern, in order to offer a non-uniform aroma distribution during use.
    [0037] [0037] In preferred embodiments, the aerosol-forming substrate comprises one or more sheets of homogenized tobacco material, which has been assembled on a stick, surrounded by a wrap and cut, to obtain individual plugs of aerosol-forming substrate.
    [0038] [0038] Although reference is being made above to solid aerosol-forming substrates, it is evident to someone skilled in the art, that other forms of aerosol-forming substrate can be included in other modalities. For example, the aerosol-forming substrate may be a liquid aerosol-forming substrate. If a liquid aerosol-forming substrate is provided, the aerosol-forming device preferably comprises means for retaining the liquid. For example, the liquid aerosol-forming substrate can be absorbed into a porous carrier material. The porous carrier material can be made of any suitable absorbent body or plug, for example, a metal or foamed plastic material, polypropylene, Terylene (polyethylene terephthalate), nylon fibers or ceramic. The liquid aerosol forming substrate can be retained in the porous carrier material prior to use of the aerosol forming device or, alternatively, the material of the liquid aerosol forming substrate can be released into the porous carrier material during or immediately before use. For example, the liquid aerosol-forming substrate can be supplied in a capsule. The capsule wrap preferably melts on heating and releases the liquid aerosol-forming substrate into the porous carrier material. The capsule can optionally contain a solid in combination with the liquid.
    [0039] [0039] Alternatively, the vehicle may be a non-woven fabric or bundle of fibers in which tobacco components have been incorporated. The nonwoven fabric or bundle of fibers may comprise, for example, carbon fibers, natural cellulose fibers or fibers derived from cellulose.
    [0040] [0040] The smoking article can be substantially cylindrical in shape. The smoking article can be substantially elongated. The smoking article may have a length and a circumference substantially perpendicular to the length. The aerosol-forming substrate can be substantially cylindrical in shape. The aerosol-forming substrate can be substantially elongated. The aerosol forming substrate can also have a length and circumference substantially perpendicular to the length. The aerosol forming substrate can be received in the aerosol generating device, so that the length of the aerosol forming substrate is substantially parallel to the direction of the air flow in the aerosol generating device.
    [0041] [0041] The smoking article can have a total length between approximately 30 millimeters and approximately 100 millimeters. The smoking article can have an external diameter between approximately 5 mm and approximately 12 mm. The smoking article may comprise a filter or a mouthpiece. The filter may be located at the downstream end of the smoking article. The filter can also be a cellulose acetate filter. The filter is approximately 7 millimeters long in one mode, but can be between 5 millimeters and 14 millimeters long.
    [0042] [0042] In one embodiment, the smoking article has a total length of approximately 45 millimeters. The smoking article can have an outside diameter of approximately 7.2 mm. In addition, the aerosol-forming substrate can be approximately 10 millimeters long. Alternatively, the aerosol-forming substrate may be approximately 12 millimeters long. In addition, the diameter of the aerosol-forming substrate can be between approximately 5 millimeters and approximately 12 millimeters. The smoking article may comprise an external paper wrapper. In addition, the smoking article may comprise a separation between the aerosol-forming substrate and the filter plug. The separation can be approximately 18 millimeters, but can range from approximately 5 millimeters to approximately 25 millimeters.
    [0043] [0043] In another embodiment, a process for using, consuming or smoking a smoking article is made available, which comprises a plurality of elements. The elements include a front plug and an aerosol-forming substrate. The process involves the steps of inserting a heating element into the smoking article through a defined hole or slit through the front plug, increasing the temperature of the heating element to heat the aerosol-forming substrate sufficiently to form an aerosol, and removing the heating element of the smoking article.
    [0044] [0044] The aerosol generated by heating the aerosol-forming substrate can be inhaled by the user. The rod can be defined as having an opening end and a distal end located upstream of the opening end. Typically, a user applies his lips to the opening end of the stick and inhales at the same time that the aerosol-forming substrate is heated by the heating element. Air and any aerosol generated inside the stick are sucked through the opening end of the stick to be inhaled by the user.
    [0045] [0045] In some embodiments, the heating element is placed in direct contact with the aerosol-forming substrate and, in some embodiments, the heating element is inserted into the aerosol-generating substrate. As described above, the aerosol-forming substrate can adhere to the heating element. The aerosol-forming substrate can also contract after heating and become soldered inside the stick. In these circumstances, the aerosol-forming substrate is susceptible to being removed from the stick when the heating element is removed. Therefore, the process can provide a step, in which the front plug prevents the aerosol-forming substrate from leaving when the heating element is removed from the smoking articles. The aerosol-forming substrate can move inside the stick towards the front plug and collide with the front plug. This shock can enable the adhesion between the heating element and the aerosol-forming substrate to be overcome, thereby enabling the heating element to be removed from the smoking article.
    [0046] [0046] As described above, fragments of aerosol-forming substrate may adhere to the heating element. In addition, residues of the aerosol-forming substrate or residues derived from the aerosol-forming substrate can be deposited or formed on the heating element. The process may involve a step, in which a surface of the heating element is rubbed, when the heating element is removed from the smoking articles. The ability to rub a surface of the heating element on the front cap can be a special advantage where the front cap defines a crack. This rubbing is carried out by interference between a surface of the heating element and the material that forms the front plug.
    [0047] [0047] The heating element is typically a heating element of an aerosol generating device compatible with the smoking article. Characteristics described in relation to one modality may also apply to other modalities. For example, the process for using a smoking article can be used in conjunction with any smoking article described above.
    [0048] [0048] Specific modalities are written now with reference to the figures, in which:
    [0049] [0049] Figure 1 is a schematic cross-sectional diagram of a smoking article according to a first embodiment, coupled with an aerosol generating device;
    [0050] [0050] Figure 2 is a schematic diagram, which illustrates a projection of the front end of the smoking article according to the first modality, showing the penetration of the smoking article through a slit defined in a frontal plug, by an element of heating;
    [0051] [0051] Figure 3A is a schematic diagram, showing a projection of the front end of the smoking article according to a second embodiment, showing the penetration of the smoking article by a heating element;
    [0052] [0052] Figure 3B is a schematic diagram, which illustrates a projection of the front end of the smoking article according to a third embodiment, showing the penetration of the smoking article by a heating element.
    [0053] [0053] Figure 1 illustrates an article for smoking 1 according to a first modality. The smoking article 1 comprises five elements, a front plug 2, an aerosol-forming substrate 7, a hollow cellulose acetate tube 6, a transfer section 4, and a mouthpiece filter 3. These five elements are arranged sequentially and in coaxial alignment and are joined by cigarette paper 5 to form a rod 15. The rod at an opening end 20, which a user inserts into his mouth during use, and a distal end 30 located on the opposite side of the rod 15 to the opening end 20. Elements located between the opening end 20 and the distal end 30 can be described as being upstream of the opening end 20 or, alternatively, downstream of the distal end 30.
    [0054] [0054] When assembled, the rod 15 is 52 mm long and has a diameter of 7.2 mm.
    [0055] [0055] The front plug 2 is a cylindrical part of cellulose acetate tow, with a length of 7 millimeters. The fibers of the cellulose acetate tow are aligned with the longitudinal direction of the rod 15. The front plug 2 defines eight radially extending slits 23 and a common point located centrally on an end face of the front plug 2. The eight slits 23 they are 45 degrees apart from each other and extend through the front plug 2. As opposite slits are 180 degrees apart and effectively form a single slot, an alternative means of describing the same slot arrangement would be four slots that are angularly spaced and cut at a common point centrally on a terminal face of the frontal plug 2.
    [0056] [0056] The aerosol-forming substrate 7 is located downstream of the front plug 2 and comprises a bundle of pleated cast-leaf tobacco, wrapped in filter paper. Cast leaf tobacco includes additives, including glycerin and an aerosol-forming additive.
    [0057] [0057] Tube 6 is located immediately downstream of the aerosol-forming substrate 7 and is formed from cellulose acetate. Tube 6 defines an opening with a diameter of 3.3 mm. A function of the tube 6 is to position the aerosol forming substrate 7 towards the distal end 30 of the rod 15, so that it can be contacted with a heating element. The tube 6 acts to prevent the aerosol-forming substrate 7 from being forced along the rod 15 towards the opening end 20, when a heating element is inserted.
    [0058] [0058] The transfer section 4 comprises a thin-walled tube 18 mm long. The transfer section 4 allows volatile substances released from the aerosol-forming substrate 7 to pass along the rod 15 towards the opening end 20. The volatile substances can cool within the transfer section 4 to form an aerosol.
    [0059] [0059] The nozzle filter 3 is a conventional nozzle filter formed from cellulose acetate tow and with a length of 7 mm.
    [0060] [0060] The five elements identified above are assembled, being rolled tightly inside a cigarette paper 5. Cigarette paper 5, in this specific embodiment, is a conventional cigarette paper. For example, cigarette paper may be a porous material with a non-isotropic structure, comprising cellulose fibers (crossing fibers interconnected by hydrogen bonds), one or more fillers and one or more combustion agents. One or more fillers can be, for example, calcium carbonate (CaCO3), and the one or more combustion agents, can be, for example, one or more of the following: potassium / sodium citrate; mono-ammonium phosphate (MAP); and disodium phosphate (DSP). The final composition of cigarette paper per square meter can be approximately 25 g of cellulose fibers, 10 g of calcium carbonate, and 0.2 g of combustion agent. The porosity of the cigarette paper can be between approximately 0 Coresta and approximately 120 Coresta. The interface between the cigarette paper 5 and each of the elements locates the elements and defines the rod 15 of the smoking article 1.
    [0061] [0061] Although the specific modality described above and illustrated in Figure 1 has five elements mounted on a cigarette paper, it is now clear to someone skilled in the art that an article for smoking according to the modalities described in the present may have additional elements and these elements can be mounted in an alternative or equivalent cigarette wrap. Likewise, a smoking article according to the modalities described herein may have fewer elements. Furthermore, it is now evident to someone skilled in the art that several dimensions for the elements described in relation to the various modalities described here are merely exemplified, and that alternative dimensions appropriate for the various elements can be selected, without departing from the spirit of the modalities described in the present.
    [0062] [0062] The smoking article of the first modality is consumed or smoked together with an appropriate aerosol generating device. Figure 1 illustrates the smoking article when coupled with this device 11 for consumption.
    [0063] [0063] The aerosol generating device 11 comprises a case 12 for receiving the smoking article 1 for consumption. A heating element 8 is located inside the case 12 and positioned to engage with the distal end 30 of the smoking article 1. The heating element 8 is formed in the form of a blade ending at a tip 40.
    [0064] [0064] When the smoking article 1 is pushed into the case 12, the tip of the heating element 8 engages in one or more of the slots 23 defined through the front plug 2. The heating element 8 is shaped like a blade, its width being greater than its thickness. The smoking article 1 may need to be rotated by an angle of up to 22.5 degrees to properly align with a slot or pair of slots 23, since they are 45 degrees apart at an angle. By applying force to the smoking article 1, when the blade is engaged with a slot 23, the heating element is inserted through the slot 23 and penetrates the front plug 2. The material that forms the front plug 2 is formed to allow that the heating element 8 is inserted, and contact is maintained between the front plug 2 and a surface of the heating element 8.
    [0065] [0065] When the heating element 8 is additionally inserted into the smoking article 1, the tip 40 of the heating element 8 contacts the aerosol-forming substrate plug 7. The application of additional pressure causes the heating element penetrate the aerosol-forming substrate 7. When the optimal engagement position is reached, further penetration is prevented, since the distal end 30 of the smoking article 1 leans against a terminal wall of the case 12, which acts as a bump.
    [0066] [0066] When the smoking article 1 is correctly engaged with the aerosol generating device 11, the heating element has been inserted through the front plug 2 and is located inside the aerosol forming substrate 7 in contact with aerosol forming material. An insulating collar 9 can surround a part of the heating element 8 that is in contact with the front plug 2. The collar 9 can alternatively be a cold zone provided for the extension of the heating element 8. That collar can prevent the heating element 8 to burn or melt the front plug 2.
    [0067] [0067] Figure 2 is a view of the front end of the smoking article 1, when engaged with the heating element 8. This view shows the cigarette paper 5 in contact with the front plug 2. The heating element 8, which can be seen to have a blade-shaped cross section, it was inserted through slits 23 extending through the front plug 2. The heating element slightly deformed the cellulose acetate material that forms the front plug 2, when passing through the cracks 23, and the elasticity of this cellulose acetate material results in contact between the front plug 2 and external surfaces of the heating element 8.
    [0068] [0068] The aerosol generating device 11 comprises a power supply and electronics (not shown), which enable the heating element 8 to be activated. This activation can be operated manually or can occur automatically, in response to a user aspirating the smoking article 1. When the heating element 8 is activated, the aerosol-forming substrate 7 is heated and volatile substances are generated or emitted. When a user aspirates at the opening end 20 of the smoking article 1, air is sucked into the smoking article 1 and the volatile substances condense to form an inhalable aerosol. This aerosol passes through the opening end 20 of the smoking article and into the user's mouth.
    [0069] [0069] The heating element 8 is heated to a temperature of about 375 degrees Celsius in order to generate an aerosol from the aerosol-forming substrate 7. When volatile substances are expelled from the aerosol-forming substrate 7 by heat, the forming substrate aerosol 7 dries and contracts. This can result in the aerosol-forming substrate 7 grabbing the heating element 8. Simultaneously, the contraction of the aerosol-forming substrate 7 can cause a loss in contact with the cigarette paper 5. In the first embodiment, the aerosol-forming substrate 7 is in the form of a plug, and contraction causes that plug to be loosened within the rod 15 of the smoking article 1.
    [0070] [0070] After use, the user removes the smoking article 1 from the aerosol generating device 11 The smoking article 1 is removed from the case 12 and the heating element 8 slides out of the front plug 2. As the grip between the heating element 8 and the aerosol forming substrate 7 is greater than the adhesion between the aerosol forming substrate 7 and the cigarette paper 5, the aerosol forming substrate 7 moves towards the distal end 30 with the heating element heating 8. However, the front plug 2 blocks the path of the aerosol-forming substrate 7. This allows the heating element 8 to be removed from the aerosol-forming substrate 7, without removing the aerosol-forming substrate 7 from the smoking article 1.
    [0071] [0071] Particles of the aerosol-forming substrate 7 or residues derived from the aerosol-forming substrate 7 may stick to the heating element 8 during operation. When the heating element 8 is removed from the smoking article 1, the outer surface of the heating element 8 is rubbed by the front plug 2. Thus, the heating element 8 is automatically cleaned by rubbing the smoking article each time it is removed from the aerosol generating device 11.
    [0072] [0072] The first embodiment described above with reference to Figures 1 and 2, describes a smoking article 1 with its distal end closed by a front plug 2 and has a plurality of through slits 23. That front plug 2 requires an element heating element 8 be forced through the slots 23 defined through the front plug 2 to contact the aerosol forming substrate 7.
    [0073] [0073] A second embodiment of a smoking article 100 is illustrated in Figure 3A (terminal view only). The smoking article 100 of Figure 3A is identical to the smoking article 1 of the first embodiment described above, except for the configuration of the front plug 102. The front plug 102 is formed from cellulose acetate and is mounted in contact with a cigarette paper 5 , but the front plug 102 defines a substantially circular through hole 103, allowing through access to a heating element of an aerosol generating device. The heating element can pass through the front plug 102 with minimal need for insertion force. The circular shape of hole 103 means that no special orientation relationship is required between the smoking article 100 and the heating element in order to engage the smoking article 100 with the aerosol generating device.
    [0074] [0074] In use, the front plug 102 of the smoking article 100 acts in the same manner as described above, to prevent the exit of an aerosol-forming substrate from the smoking article 100.
    [0075] [0075] A third embodiment of a smoking article 300 is illustrated in Figure 3B (terminal view only). The smoking article 300 of Figure 3B is identical to the smoking article 1 of the first embodiment described above, except for the configuration of the front plug 302. The front plug 302 is formed of cellulose acetate and is mounted in contact with a cigarette paper 5 , but the front plug defines a star-shaped hole 303, allowing passage access to a heating element of an aerosol generating device. Hole 303 reduces the insertion force required to insert a heating element into the smoking article 300. The star shape of hole 303 allows the heating element to engage with the front plug 302 of the smoking article 300 and prevent rotation of the article to smoke 300 while it is being consumed.
    [0076] [0076] In use, the front plug 302 of the smoking article acts in the same manner as described above to prevent the escape of an aerosol-forming substrate from the article.
    [0077] [0077] The exemplified modalities described above are not restrictive in view of the exemplified modalities described above, other modalities compatible with the exemplified modalities above are now evident to someone skilled in the art.
    权利要求:
    Claims (9)
    [0001]
    Smoking article (1, 100, 300), characterized by the fact that it comprises a rod (15) having an opening end (20) and a distal end (30) upstream of the opening end (20), the rod comprising a front plug (2, 102, 302) and an aerosol forming substrate (7), in which the front plug (2, 102, 302) is located upstream of the aerosol forming substrate (7) within the stick (15) , the aerosol-forming substrate comprises homogenized tobacco, the front plug defines a slot (23) through which a heating element (8) can be inserted, and in which the front plug is cylindrical and has a diameter of 5 mm or more and a length of at least 2 mm.
    [0002]
    Smoking article (1, 100, 300), according to claim 1, characterized by the fact that the frontal plug (2, 102, 302) and the aerosol forming substrate (7) are located inside the stick (15) , so that a heating element (8) inserted into the smoking article (1, 100, 300) through the slot (23) contacts the aerosol forming substrate (7).
    [0003]
    Smoking article (1, 100, 300), according to claim 1 or 2, characterized by the fact that it still comprises a filter (3) located at the opening end (20) of the rod (15).
    [0004]
    Smoking article (1) according to any one of the preceding claims, characterized in that the front plug (2, 102, 302) comprises a filter material so that air can be sucked through the front plug (2 , 102, 302).
    [0005]
    Smoking article (1, 100, 300) according to any one of the preceding claims, characterized in that the aerosol-forming substrate (7) comprises processed tobacco.
    [0006]
    Process for using a smoking article (1, 100, 300), characterized in that it comprises a rod (15) having an opening end (20) and a distal end (30) upstream of the opening end (20) , the stick comprising a front plug (2, 102, 302) and an aerosol forming substrate (7), in which the front plug (2, 102, 302) is located upstream of the aerosol forming substrate (7) within the stick (15), the aerosol-forming substrate comprises homogenized tobacco, in which the front plug is cylindrical and has a diameter of 5 mm or more and a length of at least 2 mm, the process comprising the steps of: inserting a heating element (8) into the smoking article (1,100, 300) through a slot (23) defined through the front plug (2, 102, 302); increasing the temperature of the heating element (8) to heat the aerosol-forming substrate (7) sufficiently to form an aerosol; and remove the heating element (8) from the smoking article (1, 100, 300).
    [0007]
    Process according to claim 6, characterized by the fact that the heating element (8) is rubbed by the front plug (2), as it is removed from the smoking article (1).
    [0008]
    Process according to claim 6 or 7, characterized in that the front plug (2, 102, 302) prevents the aerosol-forming substrate (7) from escaping when the heating element (8) is removed from the article to smoke (1, 100, 300).
    [0009]
    System characterized in that it comprises an aerosol generating device that includes a smoking article (1, 100, 300) defined in any one of claims 1 to 5, the aerosol generating device further comprising a heating element (8 ) configured to penetrate the aerosol-forming substrate (7), where the slot (23) defined in the front plug (2) of the smoking article (1, 100, 300) is dimensioned to rub a surface of the heating element (8 ) when the heating element (8) is removed from the front plug (2), or to prevent the exit of the aerosol-forming substrate (7) as the heating element (8) is removed from the smoking file (1, 100, 300) or both.
    类似技术:
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    同族专利:
    公开号 | 公开日
    EP2797449B1|2019-08-07|
    US20140373856A1|2014-12-25|
    KR20140118983A|2014-10-08|
    EP3597058A1|2020-01-22|
    IN2014DN03431A|2015-06-05|
    AU2012360831B2|2017-02-16|
    MY170381A|2019-07-27|
    KR102068756B1|2020-01-22|
    WO2013098409A1|2013-07-04|
    US11039642B2|2021-06-22|
    CA2858480A1|2013-07-04|
    CN103987286B|2018-10-02|
    BR112014012956A2|2017-06-13|
    UA112456C2|2016-09-12|
    EP2797449A1|2014-11-05|
    RU2014131469A|2016-02-20|
    RU2620491C2|2017-05-25|
    JP6227554B2|2017-11-08|
    MX369865B|2019-11-25|
    CN103987286A|2014-08-13|
    JP2015503336A|2015-02-02|
    ES2744854T3|2020-02-26|
    SG11201403666XA|2014-07-30|
    NZ624131A|2016-05-27|
    UA118011C2|2018-11-12|
    MX2014008090A|2015-03-19|
    HK1198240A1|2015-03-20|
    IL232367D0|2014-06-30|
    HUE045107T2|2019-12-30|
    AU2012360831A1|2014-08-21|
    IL232367A|2018-08-30|
    CA2858480C|2020-06-30|
    PL2797449T3|2020-02-28|
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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]|
    2020-07-07| B06A| Patent application procedure suspended [chapter 6.1 patent gazette]|
    2020-11-03| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-01-12| 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:
    申请号 | 申请日 | 专利标题
    EP11196203|2011-12-30|
    EP11196203.1|2011-12-30|
    PCT/EP2012/077091|WO2013098409A1|2011-12-30|2012-12-28|Smoking article with front-plug and aerosol-forming substrate and method|
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