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    • 专利摘要:
    ELECTRICALLY OPERATED AEROSOL GENERATION SYSTEM. The present invention relates to a system (200) comprising an electrically operated aerosol generating apparatus and an aerosol generating article (1000) for use with the apparatus, the aerosol generating article comprising a substrate forming substrate. aerosol (1020), which comprises a stem comprising a first leaf comprising an aerosol forming material and a second leaf of material other than tobacco, the first and second leaves being joined and circumscribed by a wrapper. The second sheet preferably comprises a material that functions to modify an aerosol evolved from the aerosol-forming material or modifies other properties of the stem.
    公开号:BR112014029729B1
    申请号:R112014029729-0
    申请日:2013-05-30
    公开日:2020-12-08
    发明作者:Alessandro Metrangolo；Pierre-Yves Gindrat；John Faulkner；Jean-Pierre Schaller；Jean-Claude Schneider
    申请人:Philip Morris Products S.A；
    IPC主号:
    专利说明:

    [001] The present invention relates to stems comprising a leaf comprising an aerosol forming material and a leaf of a material other than tobacco, the leaves being assembled to form a stem for use in aerosol generating articles. The invention also relates to aerosol generating articles that comprise such rods, and methods for forming such rods.
    [002] Processes and apparatus for producing fragments, cords or strips of tobacco material are known in the art. Typically, the width of such fragments, strands and strips of tobacco material is about 3 mm or less.
    [003] For example, US-A-4000748 describes a process and apparatus for fragmenting a tobacco leaf reconstituted into strips and crimping the strips resulting in a substantially simultaneous operation. The sheet of tobacco material is moved between a pair of rotating and intertwined piles of discs that fragment the sheet into a plurality of strips about 0.65 to 10.55 mm wide. The forward movement of the resulting strips is delayed by coupling with opposite surfaces of neighboring discs causing the strips to deform in a crimping configuration. Beaded strips are reported to provide an increase in fill value.
    [004] The formation of rods for aerosol generation articles comprising crimped and non-crimped fragments of tobacco material suffers from a number of disadvantages, including those discussed below.
    [005] Firstly, the fragmentation of tobacco material undesirably generates tobacco crumbs and other waste.
    [006] Second, the stems comprising fragments of tobacco material exhibit 'loose ends'. That is, there is a loss of tobacco material fragments from the ends of the stem. This is exacerbated by breaking fragments of tobacco material during the formation of the stem. Loose ends are not only aesthetically undesirable, but they can also disadvantageously lead to the need for more frequent cleaning of manufacturing equipment and aerosol generating devices. The problem of loose ends is particularly exacerbated in aerosol-generating articles, because the length of the aerosol-generating substrate rod tends to be short compared to conventional cigarettes, and therefore the proportion of substrate material that is in the proximity to one end is greater.
    [007] Thirdly, the stems comprising fragments of tobacco material have high standard deviations in weight. That is, the stems with the same dimensions tend to have an inconsistent weight. This is due, in part, to the tendency for the stems to exhibit loose ends as mentioned above. The high standard deviation in weight of the stems comprising fragments of tobacco material leads to an undesirably high rejection rate of stems whose weight is outside a selected acceptance range. In addition, the stems comprising fragments of tobacco material have non-uniform densities. That is, the density along the length of the stem tends to be inconsistent. This is due to variations in the amount of tobacco material at different locations along the stem, which results in "empty spaces", which are regions that have reduced amounts of tobacco material, and "cushions", which are regions that have increased levels of tobacco material. The non-uniform density of the stems that comprise fragments of tobacco material can undesirably affect the stems' draft resistance (RTD). In addition, the non-uniform density of the stems comprising fragments of tobacco material can lead to loose ends when an empty space is located at the end of the stem.
    [008] Loose tips, high standard deviations in weight and non-uniform densities exhibited by the stems comprising fragments of tobacco material are particularly problematic and undesirable in stems of short stem length. Stems of short stem length are often referred to as toggles.
    [009] EP-A1-2 062 484 describes a process for the formation of smokeless tobacco articles for oral consumption. The reconstituted tobacco leaf is collected on a stem, wrapped, and cut into fragments suitable for oral consumption.
    [0010] It would be desirable to provide rods comprising tobacco material for use in aerosol generating articles.
    [0011] The rod can be provided comprising a first sheet comprising an aerosol forming material and a second sheet of material other than tobacco, the first and second sheet being joined and circumscribed by a wrapper.
    [0012] The assembled sheets of material preferably extend substantially along the entire length of the stem and across substantially the entire cross-sectional area of the stem.
    Preferred aerosol-forming materials include tobacco. The first sheet may be a sheet of reconstituted tobacco or homogenized tobacco, preferably a sheet of reconstituted tobacco or homogenized tobacco comprising an aerosol-forming component.
    [0014] The first sheet may be a sheet of material other than tobacco that comprises an aerosol-forming or aerosol-forming component. For example, the first sheet may be a sheet of paper material or polymeric material that is impregnated or coated with nicotine and an aerosol-forming component. The first sheet can be a sheet of paper material or polymeric material that is impregnated or coated with a flavoring and an aerosol-forming component. The first sheet may be a sheet of paper material or polymeric material that is impregnated or coated with a perfume compound and an aerosol-forming component.
    [0015] The second leaf is a different tobacco leaf which preferably comprises a functional component to modify an aerosol evolved from the first leaf.
    [0016] As used herein, the term "rod" is used to designate a generally cylindrical element with a substantially circular, oval or elliptical cross-section.
    [0017] As used herein, the term "sheet" indicates a laminar element having a width and length substantially greater than its thickness. The width of a sheet is greater than 10 mm, preferably greater than 20 mm or 30 mm.
    [0018] As used herein, the term "aerosol forming material" indicates a material that is capable of releasing volatile compounds by heating to generate an aerosol. An aerosol-forming substrate may comprise or consist of an aerosol-forming material.
    [0019] As used herein, the term "stem length" indicates the dimension in the direction of the axis of cylindrical rods, as described herein.
    [0020] As used herein, the term "homogenized tobacco material" indicates a material formed by agglomeration of tobacco particles.
    [0021] As used herein, the term "assembled" indicates that the tobacco material sheet is rolled, folded or otherwise compressed or constricted substantially transversely with respect to the cylindrical axis of the stem.
    [0022] As used herein, the terms "upstream" and "downstream" are used to describe the relative positions of components, or parts of components, of aerosol generating articles comprising rods, as described herein in relation to the direction of the air sucked through the aerosol generating articles during use.
    [0023] A rod formed from a gathered sheet of a suitable aerosol forming material can be particularly beneficial as a component of an aerosol generating article, particularly a heated aerosol generating article.
    [0024] Heated aerosol generation systems operate by heating an aerosol-forming substrate to generate an aerosol from the substrate material. The aerosol can then be inhaled by a consumer. It may be desirable to modify the aerosol. For example, aerosols generated from tobacco materials can often contain compounds such as phenols and cresols. These types of components may have an unpleasant taste in the aerosol or may be otherwise undesirable.
    [0025] The second sheet may be a sheet that comprises an adsorbent to adsorb unwanted components of an aerosol evolved from the first sheet. The second sheet may be a sheet that is an adsorbent for adsorbing unwanted components of an aerosol evolved from the first sheet. In this way, a proportion of undesirable aerosol components can be reduced before the aerosol is consumed. An example of a sheet of material that can reduce the concentration of phenol in an aerosol evolved from a tobacco material is polylactic acid (PLA). Another example of a sheet material that can reduce the undesirable components of an aerosol is carbon.
    [0026] The second sheet may comprise a sheet of paper or polymer which is coated with or impregnated with a material which reacts with an aerosol component. For example, the second sheet can be paper or a polymer that is impregnated with a liquid compound that reacts chemically with an aerosol component.
    [0027] The second sheet may comprise a humectant to moisten the aerosol evolved from the first sheet.
    [0028] The second sheet may comprise an aerosol-forming component to dilute the aerosol evolved from the first sheet to modify the strength or flavor of the aerosol.
    [0029] The second leaf may comprise a flavoring to modify the flavor of the aerosol.
    [0030] The second sheet may comprise a material that has a high thermal conductivity to modify the temperature of the aerosol.
    [0031] The second sheet can act as a filler or ballast to augment a stem comprising a sheet of aerosol forming material. For example, an aerosol forming material can be expensive and it may be desirable to economically produce a rod having predetermined dimensions. Using an expensive sheet comprising the aerosol forming material, for example, a tobacco leaf, and an economical material, for example, paper, a rod can be produced that comprises the aerosol forming material. Filling or ballast agent can also be used to dilute the intensity of an aerosol generated from the rod.
    [0032] The second sheet can be added to the stem to modify the air flow through the stem. For example, variations in the morphology and dimensions of the second leaf may allow modification or fine-tuning of the air flow through the stem.
    [0033] The second sheet can have more than one function. The second sheet may comprise a metal sheet coated with a humectant. The sheet can increase the heat transfer inside the stem, while the humectant can increase the moisture content of the aerosol.
    [0034] The first sheet of material can be a textured sheet of material. The use of a textured sheet of material can advantageously facilitate the collection of the sheet to form a stem, as described herein. The second sheet of material may be a textured sheet of material. Both the first and second sheets of material can be sheets of textured material.
    [0035] As used herein, the term "textured sheet" indicates a sheet that has been nailed, stamped, engraved, perforated or otherwise deformed. Textured sheets of material, such as homogenized tobacco, for use in forming rods, as described herein can comprise a plurality of notches, protrusions, perforations spaced apart, or a combination thereof.
    [0036] According to a particularly preferred embodiment, a rod is provided which comprises a crimped sheet of aerosol forming material and a PLA sheet, the sheets being assembled and circumscribed by a wrapper.
    [0037] As used here, the term "crimped sheet" is intended to be synonymous with the term "crimped sheet" and denotes a sheet having a plurality of substantially parallel grooves or undulations. Preferably, a crimped sheet of aerosol-forming material, for example, a crimped sheet of homogenized tobacco material, has a plurality of grooves or undulations substantially parallel to the cylindrical axis of the rod according to the invention. This advantageously facilitates the collection of the crimped sheet of aerosol forming material to form the stem. However, it will be appreciated that the crimped sheets of aerosol forming material may, alternatively or in addition, have a plurality of substantially parallel grooves or undulations arranged at an acute or obtuse angle with respect to the cylindrical axis of the stem.
    [0038] In certain embodiments, sheets of material can be substantially uniformly textured over substantially the entire surface. For example, the crimped sheets of material may comprise a plurality of substantially parallel grooves or undulations that are spaced substantially uniformly across the width of the sheet.
    [0039] A stem as described here can comprise one or more sheets of material joined with the first and second sheets to form the stem. Any additional sheets or sheets can be crimped before being assembled. Any additional leaf or leaves may comprise additional aerosol forming materials, such as one or more additional sheets of homogenized tobacco. Any additional leaf or leaves may comprise flavoring components to modify the flavor of the aerosol.
    [0040] A stem may comprise one or more sheets of material joined with the first and second sheets to form the stem. Any additional sheet or sheets can be textured, for example, crimped, before being put together. Any additional sheet or sheets may comprise additional aerosol forming materials, such as one or more sheets of homogenized tobacco.
    [0041] A rod, as described herein can be used as an aerosol-forming substrate in an aerosol generating article.
    [0042] An aerosol generating article may be provided comprising a rod, as described herein. A number of aerosol generation articles, in which a heated aerosol forming substrate instead of combustion, have been proposed in the art. Typically, in heated aerosol generating articles, an aerosol generated by transferring heat from a heat source, for example, a chemical, electrical or flammable heat source, to a physically separate aerosol forming substrate, which can be located inside or around or downstream of the heat source.
    [0043] As used herein, the term "aerosol-forming substrate" means a substrate that consists of, or comprises an aerosol-forming material that is capable of releasing volatile compounds by heating to generate an aerosol. A sheet of tobacco material is an aerosol-forming substrate for the purposes of this invention.
    [0044] The rods as described herein are particularly suitable for use as aerosol forming substrates for heated aerosol generating articles. Aerosol-forming substrates in heated aerosol generating articles are typically significantly shorter in stem length than rods of conventional flammable smokable material in lit-up smoking articles. As noted above, loose ends, high standard deviations in weight and non-uniform densities as exhibited by rods comprising fragments of tobacco material are particularly undesirable on rods of aerosol generating material having a short rod length. The use of short stems, as described herein as aerosol generating substrates in heated aerosol generating articles advantageously minimizes or avoids one or more of the disadvantages associated with the use of short stems comprising fragments of tobacco material previously discussed above.
    [0045] In one embodiment, the rods, as described herein, can be used as aerosol-forming substrates in heated aerosol-generating articles, comprising a flammable heat source and an aerosol-forming substrate downstream of the flammable heat source .
    [0046] For example, the rods, as described herein, can be used as aerosol-generating substrates in heated aerosol-generating articles of the type described in WO-A-2009/022232, which comprise a heat source based on flammable carbon, an aerosol generating substrate downstream of the flammable heat source, and a heat conducting element around and in contact with a rear part of the heat source containing flammable carbon and an adjacent front part of the generating source substrate aerosol. However, it will be appreciated that the rods, as described herein, can also be used as aerosol generating substrates in heated aerosol generating articles, comprising flammable heat sources with other constructions.
    [0047] In another embodiment, the rods, as described here, can be used as aerosol generating substrates in heated aerosol generating articles for use in electrically driven aerosol generating systems, in which the aerosol generating substrate of the heated aerosol generating article is heated by an electric heat source.
    [0048] For example, the rods, as described herein, can be used as aerosol generating substrates in heated aerosol generating articles of the type described in EP-A-0 822 670.
    [0049] A system can be provided comprising an electrically operated aerosol generating apparatus and an aerosol generating article for use with the apparatus. The aerosol generating article comprises an aerosol-forming rod or substrate as described herein.
    [0050] A filter for an aerosol generating article may be provided, wherein the filter comprises a rod, as described herein. The rods can be used in filters for both light-ended aerosol generating articles, such as conventional smoking articles, and heated aerosol generating articles. The rods, as described herein, can be used in filters that comprise a single filter segment. The rods, as described herein, can also be used in multi-component filters, comprising two or more filter segments.
    [0051] Filters comprising tobacco-containing filter segments are known in the art. For example, EP-A-1 889 550 describes a multi-component filter for a smoking article comprising: a mouth end segment; a first flavor-releasing segment comprising tobacco or other plant leaf upstream of the mouth end segment; and a second aroma release segment comprising the filtration material and a flavoring upstream of the first aroma release segment. The suction resistance of the second aroma release segment is greater than the suction resistance of the first aroma release segment and the suction resistance of the second aroma release segment is greater than the suction resistance of the end segment from the mouth.
    [0052] In certain embodiments, the stems as described herein can be used as the filter segments containing tobacco in single or multi-component filters.
    [0053] The filters comprising the rods as described herein can still comprise one or more filtration materials for the removal of particulate components, gaseous components or a combination thereof. Suitable filtration materials are known in the art and include, but are not limited to: fibrous filtration materials, such as, for example, cellulose acetate fibers and paper; adsorbents, such as, for example, activated alumina, zeolites, molecular sieves and silica gel; biodegradable polymers, including, for example, polylactic acid (PLA), Mater-Bi®, and bioplastics; and their combinations.
    Alternatively or in addition, filters comprising rods, as described herein, may further comprise one or more smoking or aerosol modifying agents. Suitable aerosol and smoke modifying agents are known in the art and include, but are not limited to: flavorings, such as, for example, menthol.
    [0055] Preferably, the rods according to the invention are substantially uniform cross-section.
    [0056] The rods according to the invention can be produced with different dimensions, depending on their intended use.
    [0057] For example, the rods according to the invention can have a diameter between about 5 mm and about 10 mm depending on their intended use.
    [0058] For example, the rods according to the invention can have a rod length between about 5 mm and about 150 mm, depending on their intended use.
    [0059] In the preferred embodiments, the rods according to the invention for use as aerosol-forming substrates in heated aerosol-generating articles can have a rod length between about 5 mm and about 20 mm or about 30 mm.
    [0060] In other embodiments, the rods according to the invention for use in filters for smoking articles with conventional lit end and heated aerosol generating articles can have a rod length between about 5 mm and about 30 mm.
    [0061] The rods according to the invention of a rod length of the desired unit can be produced by forming a rod of multiple rod lengths of units and then cutting or otherwise splitting the rod of multiple rod lengths units on multiple rods of the desired unit rod length.
    [0062] For example, rods having a rod length of about 15 mm, for use as aerosol forming substrates in heated aerosol-generating articles can be produced by forming a rod having a rod length of about 150 mm and then cutting the elongated rod into ten rods having a rod length of about 15 mm.
    [0063] Preferred embodiments comprise sheets of homogenized tobacco material. The sheets of homogenized tobacco material can be formed by agglomerating tobacco particles obtained by grinding or otherwise grinding one or both of the tobacco leaf blade and tobacco stems. Alternatively, or in addition, tobacco leaves of homogenized tobacco material may comprise one or more of tobacco powder, tobacco crumbs and other tobacco particles by by-products formed during, for example, the treatment, handling and transport of the tobacco. When the rods according to the invention are intended for use as aerosol forming substrates in heated aerosol generating articles, the sheets of homogenized tobacco material used to form the rods preferably comprise tobacco particles obtained by grinding or otherwise grinding the tobacco leaf blade.
    [0064] In certain embodiments, homogenized tobacco material sheets may have a tobacco content of at least about 40% by weight on a dry weight basis, or at least about 50% by weight on a weight basis dry. In other embodiments, sheets of homogenized tobacco material may have a tobacco content of about 70% or more by weight on a dry weight basis. When the rods according to the invention are intended for use as aerosol-forming substrates in heated aerosol generating articles, the use of homogenized tobacco material sheets having high tobacco contents advantageously generates aerosols with enhanced tobacco flavor. .
    [0065] The sheets of homogenized tobacco material may comprise one or more intrinsic binders, that is, endogenous tobacco binders, one or more extrinsic binders, that is, exogenous tobacco binders, or a combination thereof to help agglutinate the tobacco particles . Alternatively, or in addition, the sheets of homogenized tobacco material may comprise other additives, including, but not limited to, tobacco and non-tobacco fibers, aerosol-forming components, humectants, plasticizers, flavorings, fillers, aqueous and non-aqueous solvents and their combinations.
    [0066] Extrinsic binders suitable for inclusion in the sheets of homogenized tobacco material for use in forming a stem as described herein are known in the art and include, but are not limited to: gums, such as, for example, guar gum, gum xanthan, gum arabic and locust bean gum; cellulosic binders, such as, for example, hydroxypropyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, methyl cellulose and cellulose acetate; polysaccharides, such as, for example, starches, organic acids, such as alginic acid, salts of conjugated bases of organic acids, such as sodium alginate, agar and pectins; and their combinations.
    [0067] Different tobacco fibers suitable for inclusion in sheets of homogenized tobacco material are known in the art and include, but are not limited to: cellulose fibers; soft wood fibers; hardwood fibers; jute fibers and their combinations. Prior to inclusion in the sheets of homogenized tobacco material, fibers other than tobacco can be treated by suitable processes known in the art, including, but not limited to: mechanical pulping; refining; chemical pulping; bleaching; pulping of sulfate; and their combinations.
    [0068] The sheets of homogenized tobacco material for use in forming rods, as described herein, must have a sufficiently high tensile strength to survive being brought together to form the rods. In certain embodiments, fibers other than tobacco may be included in sheets of homogenized tobacco material in order to achieve adequate tensile strength.
    [0069] For example, sheets of tobacco material homogenized to form stems, as described herein, may comprise between about 1% and about 5% by weight of different tobacco fibers, on a dry weight basis.
    [0070] Aerosol forming agents and wetting agents suitable for inclusion in homogenized tobacco material sheets are known in the art and include, but are not limited to: polyhydric alcohols, such as triethylene glycol, 1, 3-butanediol and glycerin; esters of polyhydric alcohols, such as glycerol mono-, di- or triaceate; and aliphatic esters of mono-, di- or polycarboxylic acids, such as dimethyl dodecanedioate and dimethyl tetradecanedioate.
    [0071] For example, when the rods according to the invention are intended for use as aerosol forming substrates in heated aerosol generating articles, the sheets of homogenized tobacco material for use in forming rods, as described herein they can have an aerosol-forming agent content of between about 5% and about 30% by weight on a dry weight basis. Stems intended for use in the electrically operated aerosol generating system that has a heating element may preferably include an aerosol forming agent greater than 5% to about 30%. For rods intended for use in the electrically operated aerosol generating system having a heating element, the aerosol forming agent may preferably be glycerin.
    [0072] It will be appreciated that the composition of sheets of homogenized tobacco material can be designed to meet regulatory requirements.
    [0073] A number of processes for producing homogenized tobacco material reconstitution sheets are known in the art. These include, but are not limited to: papermaking processes of the type described in, for example, US-A-3,860,012; casting or "molten sheet" processes of the type described in, for example, US-A-5,724,998; mass reconstitution processes of the type described in, for example, US-A-3,894,544; and extrusion processes of the type described in, for example, GB-A-983,928. Typically, the densities of sheets of homogenized tobacco material produced by extrusion processes and mass reconstitution processes are greater than the densities of sheets of homogenized tobacco materials produced by casting processes.
    [0074] The sheets of homogenized tobacco material for use in forming rods, as described in this document, are preferably formed by a casting process of the type generally comprising casting a slurry comprising tobacco particles and one or more binders on a conveyor belt or other support surface, drying the molten slurry to form a sheet of homogenized tobacco material and removing the sheet of homogenized tobacco material from the support surface.
    [0075] For example, in certain embodiments, sheets of homogenized tobacco material can be formed from the slurry comprising tobacco particles, guar gum, cellulose fibers and glycerin by a casting process.
    [0076] The sheets of homogenized tobacco material can be textured using known machines suitable for texturing filter trailers, paper and other materials.
    [0077] For example, sheets of homogenized tobacco material to form stems, as described herein, can be crimped using a crimping unit of the type described in CH-A-691 156, which comprises a pair of rotating crimping rolls. However, it will be appreciated that the sheets of homogenized tobacco material can be textured using other machines and processes that deform or perforate the sheets of suitable homogenized tobacco material.
    [0078] Stems, as described here, can be produced from sheets of homogenized tobacco material and sheets of material other than tobacco with different dimensions, depending on their intended use. The sheets of homogeneous tobacco material and material other than tobacco must be of sufficient width to be brought together to form a stem, as described herein.
    [0079] Preferably, the sheets of material for use in forming rods, as described herein, have a width of at least about 25 mm.
    [0080] In certain embodiments, the sheets of material for use in the shafts, as described herein, can have a width between about 25 mm and about 300 mm.
    [0081] Preferably, the sheets of material forming the stem have a total thickness of at least about 50 pm and about 300 pm.
    [0082] In certain embodiments, the individual sheets of material for use in forming rods, as described herein, may have a thickness of between about 10 pm and about 300 pm. Different tobacco sheets, such as polymer sheets or aluminum foil sheets, may be less thick than sheets of aerosol forming material.
    [0083] In certain embodiments, sheets of homogenized tobacco material for use on forming rods as described herein can have a grammage of 100 g / m 2 and about 300 g / m 2.
    [0084] The rods, as described herein, may comprise a sheet of homogenized assembled tobacco material circumscribed by a porous or a non-porous wrap.
    [0085] In certain embodiments, the stems, as described herein, may comprise a sheet of homogenized tobacco material and a sheet of paper or polymer material assembled and circumscribed by a paper wrapper.
    [0086] Suitable paper wrappers are known in the art and include, but are not limited to: cigarette paper; and filter cap housings.
    [0087] In other embodiments, the stems, as described here, may comprise a non-paper wrapper.
    [0088] Suitable non-paper wrappers are known in the art and include, but are not limited to: homogenized tobacco materials.
    [0089] The rods as described in this document can be produced using the manufacture of conventional cigarettes and cigarette filters that make the machinery, adapted to allow the collection of two or more sheets, simultaneously.
    [0090] For example, the stems comprising a beaded sheet of homogeneous tobacco material and a sheet of material other than tobacco can be produced using an adaptation of machinery for forming filter stems that comprise a sheet of beaded paper collected from the type described in CH-A-691 156. The machine can be adapted to allow a sheet of material other than tobacco to be joined together with a beaded tobacco sheet.
    [0091] As described herein, there is also provided a method of forming a rod as described herein comprising the steps of: providing a first web comprising an aerosol forming material, providing a second web comprising a material other than tobacco, being the second leaf different from the first leaf, simultaneously joining the first and second continuous leaves transversely in relation to their longitudinal axes; circumscribing the assembled sheets with a wrapper to form a continuous stem, and cutting the continuous stem into a plurality of discrete stems. The aerosol forming material can be any aerosol forming material described above, and is preferably homogenized tobacco. The non-tobacco material can be any non-tobacco material described above, and preferably comprises a polymeric sheet, a sheet of paper, a sheet of foil.
    [0092] The method may also comprise the texturing of the first web. For example, the method may comprise crimping, stamping, perforating or otherwise texturing the first web before collecting the first web together with the second web.
    [0093] Preferably, the method further comprises the crimping of the first web.
    [0094] Both the first and second continuous sheets can be textured, for example, crimped.
    [0095] The specific modalities will also be described, by way of example only, with reference to the attached drawings, in which:
    [0096] Figure 1 shows a schematic cross section of an apparatus for forming a rod according to a specific modality;
    [0097] Figure 2 shows a schematic cross section of an apparatus for forming a rod according to a specific modality;
    [0098] Figure 3 illustrates an embodiment of an aerosol generating device that incorporates the rods formed as described herein; and
    [0099] Figure 4 illustrates an aerosol generating system with an electrically operated aerosol generating device and an aerosol generating article, as illustrated in Figure 3.
    [00100] The apparatus shown in Figure 1 generally comprises: providing a device for providing a continuous sheet of homogenized tobacco material; providing device for providing a continuous sheet of PLA material; crimping device for crimping the web of homogenized tobacco material; rod forming device for gathering the continuous sheets of homogenized tobacco material together with the continuous sheet of PLA material and circumscribing the assembled material with a wrapper to form a continuous rod; and cutting device for cutting the continuous rod, in a plurality of discrete rods. The apparatus also comprises a conveying device for transporting the homogenized tobacco material web downstream through the apparatus from the delivery device to the rod forming device through the crimping devices.
    [00101] As shown in Figure 1, the provision of a device for providing a continuous sheet of homogenized tobacco material comprises a continuous sheet of homogenized tobacco material 2 mounted on a first coil 4. The provision of device for providing a continuous sheet of PLA comprises a continuous sheet of PLA 3 mounted on a second coil 5. The crimping device comprises a pair of rotating crimping rolls 6. In use, the continuous sheet of homogenized tobacco material 2 is drawn from the first coil 4 and transported downstream to the pair of crimping rollers 6 by the transport mechanism through a series of guides and tensioning rollers. As the web of homogenized tobacco material 2 is fed between the pair of crimp rollers 6, the crimp rollers engage and crimp the web of homogenized tobacco material 2 to form a continuous crimped sheet of tobacco material homogenized 8 having a plurality of substantially parallel grooves or undulations spaced along the longitudinal axis of the homogenized tobacco material sheet through the apparatus.
    [00102] The continuous crimped sheet of homogenized tobacco material 8 is transported downstream of the pair of crimp rolls 6 to the rod forming device. The continuous sheet of PLA 3 is transported from the second coil 5 in relation to the rod forming means. Both the continuous sheet of PLA 3 and the continuous crimped sheet of homogenized tobacco material 8 are simultaneously fed through a converging funnel or horn 10. The converging funnel 10 brings together the continuous sheets of material 8, 3 transversely across its longitudinal axes. The continuous sheets of material 8, 3 assume a substantially cylindrical configuration as they pass through the converging funnel 10.
    [00103] After the exit of the convergent funnel 10, the assembled sheets of homogenized tobacco material and PLA are wrapped in a continuous sheet of material 12. The continuous sheet of packaging material is fed from a coil 14 and wrapped around of the continuous crimped sheet of homogenized tobacco material gathered by an endless belt conveyor or trim. As shown in Figure 1, the rod forming device comprises an adhesive application device 16 which applies adhesive to one of the longitudinal edges of the packaging material web, so that when the opposite longitudinal edges of the packaging web packaging material are put in contact they adhere to each other to form a continuous rod.
    [00104] The rod forming device further comprises a drying device 18 downstream of the adhesive application device 16, which in use dries the adhesive applied to the seam of the continuous rod as the continuous rod is transported downstream of the adhesive device. shank formation for cutting devices.
    [00105] The cutting device comprises a rotary cutter 20 that cuts the continuous rod into a plurality of discrete rods of the unit of length or of multiple units of length.
    [00106] As the two continuous sheets of material are fed into the converging funnel, while overlapping one leaf on top of the other, the stem has an even distribution of the tobacco leaf and the PLA leaf.
    [00107] In an alternative configuration illustrated in Figure 2, a continuous sheet of PLA 3 is positioned in overlapping relationship with a continuous sheet of homogenized tobacco material 2 upstream of a pair of crimping rolls 6. The apparatus is from another substantially as described above in relation to Figure 1.
    [00108] Both continuous sheets of material 2, 3 pass through the crimping rollers 6 in overlapping relationship and are simultaneously crimped. A crimped pair of webs 9 passes out of the crimp rollers 6 and downstream to the converging funnel 10 to be formed on a rod.
    [00109] Figure 3 illustrates an embodiment of an aerosol generating article comprising a rod 1000, as described herein. Article 1000 consists of four elements; an aerosol forming substrate 1020, a hollow cellulose acetate tube 1030, a spacer element 1040, and a nozzle filter 1050. These four elements are arranged sequentially and in coaxial alignment and are assembled by 1060 cigarette paper to form aerosol generating article 1000. Article 1000, which has a mouth end 1012, which a user inserts into his mouth during use, and a distal end 1013 located at the opposite end of the article to the mouth end 1012. A The embodiment of an aerosol generating article illustrated in Figure 3 is particularly suitable for use with an electrically operated aerosol generating device that comprises a heater to heat the aerosol forming substrate.
    [00110] When assembled, article 1000 is about 45 millimeters in length and has an outside diameter of about 7.2 millimeters and an internal diameter of about 6.9 millimeters.
    [10111] The aerosol forming substrate 1020 comprises a stem formed from a first sheet of beaded fused tobacco and a second sheet of beaded PLA, wrapped in filter paper (not shown) to form a bung.
    [00112] An aerosol generating article 1000 as illustrated in Figure 3 is designed to engage with an aerosol generating device in order to be consumed. Such an aerosol generating device includes devices for heating the aerosol forming substrate 1020 to a temperature sufficient to form an aerosol. Typically, the aerosol generating device may comprise a heating element surrounding the aerosol generating article 1000 adjacent to the aerosol forming substrate 1020, or a heating element which is inserted into the aerosol forming substrate 1020.
    [00113] Once coupled to an aerosol generating device, a user aspirates at the mouth end 1012 of the smoking article 1000 and the aerosol forming substrate 1020 is heated to a temperature of about 375 degrees Celsius. At this temperature, volatile compounds are enveloped from the molten leaf tobacco sheet of the aerosol forming substrate 1020. These compounds condense to form an aerosol. The aerosol is aspirated through the 1050 filter and into the user's mouth.
    [00114] Figure 4 illustrates a part of an electrically operated aerosol generating system 2000 that uses a heating blade 2100 to heat an aerosol generating substrate 1020 from an aerosol generating article 1000. The heating blade is assembled within an aerosol article receiving the chamber of an electrically operated aerosol generating device 2010. The aerosol generating device defines a plurality of 2050 air holes to allow air to flow into the aerosol generating article 1000. The air flow is indicated by arrows in Figure 4. The aerosol generating device comprises a power supply and electronics, which are not illustrated in Figure 4. The aerosol generating article 1000 in Figure 4 is as described in relation to to Figure 3. Example 1
    [00115] The rods according to a first specific embodiment comprise a crimped sheet of homogenized tobacco material joined with a crimped sheet of PLA, circumscribed by a paper wrapper and having a length of 12 mm and diameters between 6.9 mm and 7.2 mm were produced, at rates between 20 m / min and 25 m / min, using the apparatus of the type shown in Figure 1.
    [00116] The continuous sheets of homogenized tobacco material were produced by a casting process, the sheets having a width between 110 mm and 134 mm, a thickness of 120 pm to 260 pm, a grammage between 167 g / m 2 and 201 g / m 2 and a moisture content between 5% and 12%.
    权利要求:
    Claims (10)
    [0001]
    1. System, which comprises an electrically operated aerosol generating apparatus and an aerosol generating article (1000) for use with the apparatus, characterized by the fact that the aerosol generating article comprises an aerosol forming substrate (1020 ) comprising, a stem comprising a first leaf (2) comprising aerosol forming material, and a second leaf (3) of material other than tobacco, the first leaf and the second leaf joined and circumscribed by a wrapper (12).
    [0002]
    2. System according to claim 1, characterized by the fact that the second sheet comprises a functional component for modifying an aerosol involved, starting from the first sheet of aerosol forming material.
    [0003]
    3. System according to claim 1 or 2, characterized by the fact that the first sheet is a sheet of homogenized tobacco material.
    [0004]
    4. System according to claim 1, 2 or 3, characterized in that the second sheet is a polymeric or paper sheet.
    [0005]
    5. System according to any one of the preceding claims, characterized by the fact that the second sheet comprises an adsorbent material for adsorbing phenolic compounds.
    [0006]
    6. System according to any one of the preceding claims, characterized in that the second sheet comprises a biodegradable polymer, for example, polylactic acid.
    [0007]
    7. System according to any one of the preceding claims, characterized by the fact that the second sheet comprises carbon.
    [0008]
    8. System according to any one of the preceding claims, characterized by the fact that the second sheet comprises a humectant.
    [0009]
    9. System according to any one of the preceding claims, characterized by the fact that at least one of the first sheet and the second sheet is driven.
    [0010]
    System according to any one of the preceding claims, characterized by the fact that it comprises at least one sheet of tobacco material and at least two sheets of material other than tobacco.
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    同族专利:
    公开号 | 公开日
    US20150107611A1|2015-04-23|
    BR112014029729A2|2017-06-27|
    AU2013269592B2|2017-03-02|
    RS54957B1|2016-11-30|
    JP2018082710A|2018-05-31|
    MY167259A|2018-08-14|
    PT2854577T|2016-08-26|
    RU2621661C1|2017-06-06|
    WO2013178769A1|2013-12-05|
    KR102135729B1|2020-07-21|
    HUE028340T2|2016-12-28|
    US10010110B2|2018-07-03|
    TWI603682B|2017-11-01|
    AR091213A1|2015-01-21|
    PH12014502502A1|2014-12-22|
    CN104411192A|2015-03-11|
    ZA201408206B|2015-12-23|
    NZ703079A|2016-10-28|
    TW201410162A|2014-03-16|
    ES2586937T3|2016-10-19|
    IL235625A|2019-01-31|
    CA2875182A1|2013-12-05|
    JP2015523857A|2015-08-20|
    EP2854577B1|2016-07-13|
    AU2013269592A1|2015-01-22|
    PH12014502502B1|2014-12-22|
    IL235625D0|2015-01-29|
    PL2854577T3|2017-01-31|
    MX2014014624A|2015-02-12|
    EP2854577A1|2015-04-08|
    DK2854577T3|2016-09-05|
    HK1203777A1|2015-11-06|
    CA2875182C|2020-08-04|
    JP6668318B2|2020-03-18|
    IN2014DN09657A|2015-07-31|
    MX363823B|2019-04-04|
    KR20150027069A|2015-03-11|
    CN104411192B|2018-04-17|
    SG11201407912TA|2014-12-30|
    UA115061C2|2017-09-11|
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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]|
    2019-10-08| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-09-01| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-12-08| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 30/05/2013, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    EP12170360|2012-05-31|
    EP12170360.7|2012-05-31|
    PCT/EP2013/061211|WO2013178769A1|2012-05-31|2013-05-30|Electrically operated aerosol generating system|
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