• 专利附录
  • 专利说明
  • 权利要求
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    • 专利摘要:
    mixed rods for use in aerosol-generating articles. the present invention relates to a rod for an aerosol generating article comprising at least two sheets (2, 3) of tobacco material grouped and circumscribed by a wrap (12). the rod includes a first leaf (2) of a first tobacco material and a second leaf (3) of a second tobacco material. the second leaf of the second tobacco material is physically or chemically different from the first leaf of the first tobacco material.
    公开号:BR112014029738B1
    申请号:R112014029738-0
    申请日:2013-05-30
    公开日:2021-03-23
    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:

    [0001] [001] The present invention relates to rods comprising two or more sheets of tobacco material grouped together to form a rod for use in aerosol generating articles. The invention also relates to aerosol-generating articles comprising such rods, and methods for forming such rods.
    [0002] [002] The processes and apparatus for producing scraps, cords or strips of tobacco material are known in the art. Typically, the width of such flaps, cords and strips of tobacco material is about 3 mm or less.
    [0003] [003] For example, the patent document US-A-4,000,748 discloses a process and an apparatus for shredding a tobacco leaf reconstituted into strips and crimping the resulting strips in a substantially simultaneous operation. The sheet of tobacco material is moved between a pair of piles of rotating discs and interspersed which cut the sheet into a plurality of strips about 0.65 to 1.55 mm wide. The forward movement of the resulting strips is slowed by coupling with the coating surfaces of neighboring discs that cause the strips to curl in a crimped configuration. Beaded strips are considered to provide an increase in the weft value.
    [0004] [004] The formation of rods for aerosol-generating articles that comprise flaps of beaded or non-beaded tobacco material suffers from a number of disadvantages, including those discussed below.
    [0005] [005] Firstly, the shredding of tobacco material generates undesirably fine tobacco and other residues.
    [0006] [006] Second, rods that comprise flaps of tobacco material exhibit 'loose ends'. That is, there is a loss of tobacco material flaps at the ends of the rod. This is exacerbated by the rupture of the flaps of tobacco material during the formation of the rod. 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 rod of the aerosol-generating substrate tends to be short compared to conventional cigarettes and, therefore, the proportion of substrate material that is in the vicinity of an end is bigger.
    [0007] [007] Third, rods that comprise flaps of tobacco material exhibit large standard deviations in weight. That is, rods of the same dimensions tend to be of inconsistent weight. This is partly due to the tendency of the rods to exhibit loose ends as mentioned above. The large standard deviation in the weight of rods comprising flaps of tobacco material leads to an undesirably high rate of rejection of rods whose weight falls outside a selected acceptance range. In addition, rods that comprise patches of tobacco material exhibit non-uniform densities. That is, the density along the length of the rod tends to be inconsistent. This is due to variations in the amount of tobacco material at different locations along the rod, which results in 'empty spaces', which are regions that have reduced amounts of tobacco material, and 'cushions', which are regions that have higher levels of tobacco material. The uneven density of rods that comprise flaps of tobacco material can undesirably affect rod extraction resistance (RTD). In addition, the non-uniform density of rods that comprise flaps of tobacco material can lead to loose ends when an empty space is located at the end of the rod.
    [0008] [008] Loose ends, large standard deviations from weight and non-uniform densities as exhibited by rods comprising flaps of tobacco material are particularly problematic and undesirable in short rod length rods. Short rod length rods are sometimes referred to as plugs.
    [0009] [009] There are many types of tobacco and in many ways in which two types of tobacco can differ. For example, different types of tobacco can be derived from different varieties of tobacco stems, or from different parts of a tobacco stalk. Tobacco can differ if it is processed in different ways in order to vary certain characteristics. Tobacco can differ if it comprises different additives, or different proportions of additives.
    [0010] [0010] Aerosol-generating articles, such as traditional lit-tip cigarettes, typically comprise mixed tobacco. Mixed tobacco typically comprises scraps and strips from many different types of tobacco leaves and homogenized tobacco. Cigarette properties such as perceived taste or smoothness can be controlled by mixing many different types of tobacco.
    [0011] [0011] Patent document EP-A1-2 062 484 discloses a process for forming smokeless tobacco articles for oral consumption. A reconstituted tobacco leaf is grouped on a stick, rolled and cut into pieces suitable for oral consumption.
    [0012] [0012] It would be desirable to provide rods that comprise tobacco material for use in aerosol-generating articles.
    [0013] [0013] A rod can be provided which comprises a first sheet of tobacco material and at least one continuous element of tobacco material grouped with the first sheet of tobacco material and circumscribed by a wrap, wherein the rod includes a first sheet of a first tobacco material and a continuous element of a second tobacco material, wherein the second tobacco material is chemically different from the first tobacco material. The continuous element may comprise a different blend of tobacco or a different type of tobacco compared to the first leaf. The continuous element may comprise a different aerosol former as compared to the first sheet. The continuous element may comprise a different proportion of aerosol former as compared to the first sheet. A continuous element of tobacco material can be in the form of a ribbon, a strip, a thread, a strap, a filament, a thread, or another elongated element. The continuous tobacco material element may be a second sheet of tobacco material.
    [0014] [0014] A rod can be provided comprising at least two sheets of tobacco material grouped and circumscribed by a wrap, wherein the rod includes a first sheet of a first tobacco material and a second sheet of a second tobacco material, wherein the second sheet of the second tobacco material which is physically or chemically different from the first sheet of the first tobacco material.
    [0015] [0015] As non-limiting examples, the two sheets can be physically different if they have different physical dimensions, different surface textures, different morphologies, different densities, or different porosities. The sheets can be textured by crimping, and the crimping of one sheet may be of a different degree than the crimping of the other sheet. For example, a sheet may have a different crimping depth compared to the other sheet, or a sheet may have a different crimping density, that is, a different number of crimping lines per unit of distance, compared to the other sheet. The person skilled in the art must be aware of other physical differences that may characterize the two sheets of tobacco material.
    [0016] [0016] As non-limiting examples, the two sheets may be chemically different if they contain different chemical constituents, for example, if the two sheets contain different mixtures of tobacco, or different types of aerosol former, or different types of plasticizer, or different flavorings, or different proportions of any element. For example, a leaf may comprise a different proportion of Virginia tobacco compared to the other leaf, or a leaf may comprise a different proportion of an aerosol former such as glycerin compared to the other leaf.
    [0017] [0017] Once the first sheet and the second sheet have been grouped on a stick, they can be described as grouped sheets. The grouped sheets of material preferably extend over substantially the entire length of the rod and across substantially the entire cross-sectional area of the rod.
    [0018] [0018] The tobacco material that forms at least two leaves is preferably reconstituted tobacco or homogenized tobacco. The tobacco material can comprise an aerosol former.
    [0019] [0019] As used in the present invention, the term 'rod' is used to denote a generally cylindrical element of substantially circular, oval or elliptical cross-section.
    [0020] [0020] As used in the present invention, the term 'sheet' refers to a laminar element that has 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.
    [0021] [0021] As used in the present invention, the term 'rod length' refers to the dimension in the direction of the cylindrical axis of the rods as described in the present invention.
    [0022] [0022] As used in the present invention, the term 'homogenized tobacco' refers to a material formed by the agglomeration of particulate tobacco.
    [0023] [0023] As used in the present invention, the term 'grouped' denotes that the sheet of tobacco material is rolled, folded, or compressed or constricted in a substantially transversal manner to the cylindrical axis of the rod.
    [0024] [0024] As used in the present invention, the terms 'upstream' and 'downstream' are used to describe the relative positions of the components, or parts of components, of the aerosol-generating articles comprising the rods as described in the present invention with respect to the direction of the air drawn through the aerosol generating articles during their use.
    [0025] [0025] The inclusion of bundled sheets of homogenized tobacco material in the rods as described in the present invention advantageously significantly reduces the risk of loose ends compared to rods comprising flaps of tobacco material.
    [0026] [0026] Rods comprising at least two sheets of tobacco material advantageously exhibit significantly smaller standard deviations in weight than rods comprising flaps of tobacco material. The weight of a rod of a particular length of the rod is determined by the density, width and thickness of the tobacco material sheets that are grouped together to form the rod. The weight of the rods of a particular length of the rod can thus be adjusted by controlling the density and dimensions of the individual sheets of tobacco material. This reduces inconsistencies in weight between rods of the same dimensions, and thus results in a lower rejection rate for rods whose weight falls outside a selected acceptance range.
    [0027] [0027] Rods comprising sheets of tobacco material as described in the present invention advantageously exhibit more uniform densities than rods comprising flaps of tobacco material.
    [0028] [0028] Tobacco leaf material such as homogenized tobacco leaf material can be produced by using different types of tobacco. For example, tobacco leaf material can be formed by using tobacco from a number of different varieties of tobacco, or tobacco from different regions of tobacco plants, such as the leaves or the stem. After processing, the sheet has consistent properties and a homogenized flavor. A single sheet of homogenized tobacco material can be produced to have a specific flavor. To produce a product that has a different flavor, a different material from the tobacco leaf needs to be produced. Some flavors that are produced by mixing a large number of different shredded tobacco in a conventional cigarette can be difficult to replicate on a single homogenized tobacco leaf. For example, Virginia tobacco and Burley tobacco may have to be processed in different ways to optimize their individual flavors. It may not be possible to replicate a particular blend of Virginia and Burley tobacco on a single sheet of homogenized tobacco material.
    [0029] [0029] A rod can be provided which comprises a leaf of a first tobacco material and a leaf of a second tobacco material which is chemically different from the first tobacco material. The tobacco material sheets are grouped together to form the rod. By combining two different sheets of tobacco material in a single rod, new mixtures can be created that could not be produced by a single sheet of homogenized tobacco. This concept can be illustrated by the following non-limiting examples.
    [0030] [0030] The first tobacco material can be dominated by Virginia tobacco and the second tobacco material can be dominated by Burley tobacco.
    [0031] [0031] The first tobacco material can be dominated by Virginia tobacco and the second tobacco material can be dominated by Oriental tobacco.
    [0032] [0032] The first tobacco material can be dominated by Virginia tobacco and the second tobacco material can comprise Perique tobacco.
    [0033] [0033] The first tobacco material can be formed mainly of leaf tobacco and the second tobacco material can be derived mainly from stem tobacco.
    [0034] [0034] The first tobacco material can be treated or aged or processed or cured in a different way from the second tobacco material in such a way that it is chemically different.
    [0035] [0035] Homogenized tobacco can comprise aerosol-forming compounds such as glycerin and propylene glycol. This can be particularly advantageous when the homogenized tobacco is to be used as an aerosol-forming substrate of a heated aerosol-forming article.
    [0036] [0036] The first tobacco material may comprise a first aerosol-forming compound and the second tobacco material may comprise a second aerosol-forming compound different from the first aerosol-forming compound. For example, it may be preferable to use glycerin as an aerosol-forming compound of a first sheet of tobacco material and triethylene glycol as an aerosol-forming compound of a second sheet of tobacco material.
    [0037] [0037] A rod as described in the present invention can be heated to evolve volatile compounds, which condense to form an inhalable aerosol. The temperature at which an aerosol is formed and the rate at which the stick is consumed can depend to some degree on the nature of the aerosol-forming compounds present in the stick. It may be desirable to modify or improve a consumer experience by controlling the temperature and the rate at which the aerosol evolves. It may be desirable for a rod to comprise two different sheets of tobacco material, each of which provides a different response to the evolution of the aerosol to a heating profile.
    [0038] [0038] The first tobacco material may comprise a different amount of the aerosol-forming compound in relation to the second tobacco material. For example, the first tobacco material can comprise 5% by weight of glycerin, whereas the second tobacco material can comprise 10% by weight of glycerin.
    [0039] [0039] The first tobacco material may comprise aerosol-forming compounds that form an aerosol at a lower temperature than the aerosol-forming compounds of the second tobacco material.
    [0040] [0040] The homogenized tobacco materials can include several other additives such as humectants, plasticizers, flavorings, fillers, binders and solvents. Some additives may be more suitable for use with one type of tobacco material than another type of tobacco material.
    [0041] [0041] The first tobacco material may comprise additives other than the second tobacco material.
    [0042] [0042] The first tobacco material may comprise a different proportion of additives compared to the second tobacco material.
    [0043] [0043] A rod can be provided which comprises a first leaf of a first tobacco material and a second leaf of a second tobacco material which is physically or morphologically different from the first leaf. One of the sheets of tobacco material can be a textured sheet of material. The use of at least one textured sheet of material can advantageously facilitate the grouping of the sheets to form a rod. Both or all of the sheets of tobacco material on a stick can be textured sheets of material.
    [0044] [0044] As used in the present invention, the term 'textured sheet' refers to a sheet that is crimped, shaped, trimmed, perforated or otherwise deformed. Crimping is a preferred form of texturing. The textured sheets of material may comprise a plurality of cutouts separated from each other, protrusions, perforations or a combination thereof.
    [0045] [0045] The first sheet may be a textured sheet of tobacco material and the second sheet may be non-textured.
    [0046] [0046] Both the first and second sheets can be textured sheets of tobacco material.
    [0047] [0047] The first sheet may be a textured sheet of tobacco material that is textured in a different way than the second sheet of tobacco material. For example, the first sheet can be crimped and the second sheet can be perforated.
    [0048] [0048] Both the first and second sheets can be crimped sheets that are morphologically different from each other. For example, the second sheet can be crimped with a different number of ribs per unit width of the sheet compared to the first sheet.
    [0049] [0049] By grouping at least two sheets of tobacco material that have different textures, the physical properties of the rod can be controlled. For example, the density of the rod can be controlled by grouping at least two sheets of tobacco material that are textured in different ways.
    [0050] [0050] As used in the present invention, the term 'beaded sheet' lends itself to be synonymous with the term 'crepe sheet' and refers to a sheet that has a plurality of substantially parallel ridges or corrugations. Preferably, a crimped sheet of tobacco material, for example, a crimped sheet of homogenized tobacco material, has a plurality of ridges or corrugations substantially parallel to the cylindrical axis of the rod. This advantageously facilitates the grouping of the crimped sheet of tobacco material to form the rod. However, it should be appreciated that the crimped sheets of tobacco material for use in the rods as described in the present invention may, alternatively or additionally, have a plurality of ridges or corrugations substantially parallel or arranged at an acute or obtuse angle in relation to the cylindrical axis of the rod.
    [0051] [0051] In certain embodiments, the sheets of material for use in the rods as described in the present invention may be substantially excessively uniformly textured over substantially their entire surface. For example, the crimped sheets of material for use in rods as described in the present invention can comprise a plurality of substantially parallel ridges or corrugations that are substantially separated from each other uniformly across the width of the sheet.
    [0052] [0052] At least two sheets that are grouped together to form the rod can have different physical dimensions. The leaves are effectively endless leaves, and are provided as a network for the manufacturing process. However, the width and thickness of the leaves can be varied.
    [0053] [0053] It may be desirable to group two sheets each of a different thickness or each of a different width. This can alter the physical properties of the stick. This can facilitate the formation of a mixed tobacco rod from sheets of tobacco material of different chemical composition.
    [0054] [0054] The first sheet can have a first thickness and the second sheet can have a second thickness which is a percentage or a fraction of the first thickness, for example, half or a third or a quarter of the first thickness.
    [0055] [0055] The first sheet may have a first width and the second sheet may have a second width that is different from the first width.
    [0056] [0056] The first sheet of the first tobacco material and the second sheet of the second tobacco material can be arranged in an overlapping relationship before grouping, or at the point at which they are grouped. The leaves can have the same widths and thicknesses.
    [0057] [0057] The leaves can have different thicknesses. The sheets can have different widths. The leaves can be textured in different ways.
    [0058] [0058] Where it is desirable that the first sheet and the second sheet are both textured, the sheets can be textured simultaneously before grouping. For example, sheets can be placed in an overlapping relationship and passed through a texturing medium, such as a pair of crimping rollers.
    [0059] [0059] Alternatively, each sheet can be textured separately and then subsequently agglomerated to be grouped on a stick. For example, where the two sheets have different thicknesses, it may be desirable to crimp the first sheet in a different way than the second sheet.
    [0060] [0060] A rod can comprise one or more additional sheets of material grouped with the first and second sheets to form the rod. Any additional sheet or sheets can be textured, for example, crimped, before grouping. Any additional leaf or leaves may comprise additional aerosol forming materials, such as one or more additional sheets of homogenized tobacco.
    [0061] [0061] A rod as described in the present invention can be used as an aerosol-forming substrate in an aerosol-generating article.
    [0062] [0062] An aerosol generating article comprising a rod as described in the present invention can be provided. The rods as described in the present invention can be used as rods of the combustible smokable material in lit smoking articles. In one embodiment, the rods as described in the present invention can be used as rods of combustible smokeable material in lit-end cigarettes comprising a rod of combustible smokeable material and a filter downstream of the rod of combustible smokeable material.
    [0063] [0063] In one embodiment, rods as described in the present invention can be particularly advantageous as a component of a heated aerosol-generating article, for example, as an aerosol-forming substrate of a heated aerosol-generating article.
    [0064] [0064] Heated aerosol generating 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.
    [0065] [0065] A series of aerosol-generating articles in which an aerosol-forming substrate is heated and not burned has been proposed in the state of the art. Typically in heated aerosol-generating articles, an aerosol is generated by transferring heat from a heat source, for example, a chemical, electrical or combustible heat source, to a physically separate aerosol-forming substrate, which can be located inside, around or downstream of the heat source.
    [0066] [0066] As used in the present invention, the term 'aerosol-forming substrate' refers to a substrate consisting of or comprising an aerosol-forming material that can release volatile compounds with heating to generate an aerosol. A sheet of tobacco material is an aerosol-forming substrate for the purposes of this specification.
    [0067] [0067] Rods as described in the present invention 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 rod length than sticks of combustible smokeable material in conventional light-ended smoking articles. As noted above, the high non-uniform densities that are exhibited by rods comprising flaps of tobacco material are particularly undesirable in rods of aerosol-generating material that have a short rod length. The use of short rods as described in the present invention as aerosol-generating substrates in heated aerosol-generating articles advantageously minimizes or avoids one or more of the disadvantages associated with the use of the short rods that comprise the flaps of tobacco material discussed previously. above.
    [0068] [0068] In one embodiment, rods as described in the present invention, can be used as aerosol-forming substrates in heated aerosol-generating articles comprising a combustible heat source and an aerosol-generating substrate downstream of the combustible heat source .
    [0069] [0069] For example, rods as described in the present invention can be used as aerosol-generating substrates in heated aerosol-generating articles of the type shown in patent document WO-A-2009/022232, which comprise a heat source based on combustible carbon, an aerosol generating substrate downstream of the combustible heat source, and a thermally conductive element around and in contact with a rear part of the combustible carbon based heat source and an adjacent front part of the substrate aerosol generator. However, it should be appreciated that rods as described in the present invention can also be used as aerosol-generating substrates in heated aerosol-generating articles that comprise combustible heat sources that have other constructions.
    [0070] [0070] In another embodiment, rods as described in the present invention can be used as aerosol-generating substrates in heated aerosol-generating articles for use in electrically operated aerosol-generating systems in which the aerosol-generating substrate of the generating article heated aerosol is heated by an electric heat source.
    [0071] [0071] For example, rods as described in the present invention can be used as aerosol-generating substrates in heated aerosol-generating articles of the type shown in patent document EP-A-0 822 670.
    [0072] [0072] A system comprising an electrically operated aerosol generating apparatus and an aerosol generating article may be provided for use with the apparatus. The aerosol-generating article comprises a rod or an aerosol-forming substrate as described in the present invention.
    [0073] [0073] The insertion and removal of heated aerosol-generating articles from an electrically operated aerosol-generating system, for example, an electrically heated aerosol-generating system, in which those articles include a rod comprising flaps of tobacco material, tends to dislodge the tobacco material scraps from the rod. This can disadvantageously result in the need for more frequent cleaning of the electrical heat source and other parts of the electrically operated aerosol generating system in order to remove the dislodged flaps.
    [0074] [0074] On the other hand, the insertion and removal of heated aerosol-generating articles including an aerosol-generating substrate comprising a rod as described in the present invention is less likely to result in the displacement of the tobacco material.
    [0075] [0075] A filter for an aerosol-generating article can be employed, wherein the filter comprises a rod as described in the present invention. Rods can be used in the filters for both aerosol-generating articles with a lighted tip, such as conventional smoking articles, and heated aerosol-generating articles. Rods as described in the present invention can be used on filters that comprise a single filter segment. Rods as described in the present invention can also be used in multi-component filters that comprise two or more filter segments.
    [0076] [0076] Filters comprising filter segments containing tobacco are known in the art. For example, patent document EP-A-1 889 550 discloses a multi-component filter for a smoking article comprising: a segment of the mouth end; a first flavor-releasing segment comprising tobacco or leaf from another plant upstream of the end-of-mouth segment; and a second flavor release segment comprising the filtration material and a flavorant upstream of the first flavor release segment. The extraction resistance of the second flavor releasing segment is greater than the extraction resistance of the first flavor releasing segment and the extraction resistance of the second flavor releasing segment is greater than the extraction resistance of the end segment from the mouth.
    [0077] [0077] In certain embodiments, rods as described in the present invention can be used as filter segments containing tobacco in single-component or multi-component filters. For example, rods as described in the present invention can be used as a first flavor releasing segment in multi-component filters of the type shown in patent document EP-A-1 889550.
    [0078] [0078] Filters comprising rods as described in the present invention can also 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 tow and paper; adsorbents such as, for example, activated alumina, zeolites, molecular sieves and silica gel; biodegradable polymers that include, for example, polylactic acid (PLA), Mater-Bi®, and bioplastics; and their combinations.
    [0079] Alternatively or in addition, filters comprising rods as described in the present invention may also comprise one or more smoke or aerosol modifying agents. Suitable smoke and aerosol modifying agents are known in the art and include, but are not limited to: flavoring agents such as, for example, menthol.
    [0080] [0080] Preferably, the rods according to the specification are substantially uniform in cross section.
    [0081] [0081] Rods can be produced according to the specification that have different dimensions depending on their intended use.
    [0082] [0082] For example, the rods according to the specification can have a diameter between about 5 mm and about 10 mm, depending on their intended use.
    [0083] [0083] For example, rods according to the specification can have a rod length between about 5 mm and about 150 mm, depending on their intended use.
    [0084] [0084] In the preferred embodiments, the rods according to the specification 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 .
    [0085] [0085] In other embodiments, the rods according to the specification for use in filters for conventional light-ended smoking articles and heated aerosol-generating articles can have a rod length between about 5 mm and about 30 mm .
    [0086] [0086] Rods according to the descriptive report of a desired single rod length can be produced by forming a multiple single rod length rod and then the multiple single rod length rod is cut and divided into multiple rods desired rod length.
    [0087] [0087] For example, rods that have 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 that has a rod length of about 150 mm and then the elongated rod is divided into ten rods that have a rod length of about 15 mm.
    [0088] [0088] Preferred embodiments comprise sheets of homogenized tobacco material. The sheets of homogenized tobacco material can be formed by agglomerating the particulate tobacco obtained by grinding or else grinding, or both, of tobacco leaf blades and tobacco leaf stalks. Alternatively, or in addition, the tobacco leaves of the homogenized tobacco material may comprise one or more of tobacco dust, tobacco fines and other by-products of particulate tobacco formed during, for example, the treatment, handling and transport of the tobacco . Where the rods according to the specification are suitable for use as aerosol-forming substrates in heated aerosol-generating articles, the sheets of homogenized tobacco material used to form the rods preferably comprise the particulate tobacco obtained by grinding or else grinding of tobacco leaf blades.
    [0089] [0089] In certain embodiments, sheets of homogenized tobacco material 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. Where rods according to the specification are suitable for use as aerosol-forming substrates in heated aerosol-generating articles, the use of sheets of homogenized tobacco material that have high tobacco content advantageously generates aerosols with enhanced tobacco flavor.
    [0090] [0090] 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 agglomerate the tobacco particulate. Alternatively, or in addition, sheets of homogenized tobacco material may comprise other additives including, but not limited to, tobacco and non-tobacco fibers, aerosol builders, humectants, plasticizers, flavorings, fillers, aqueous and non-solvent solvents aqueous solutions, and combinations thereof.
    [0091] [0091] Extrinsic binders suitable for inclusion in sheets of homogenized tobacco material for use in forming a rod as described in the present invention are known in the art and include, but are not limited to: gums such as , for example, guar gum, xanthan gum, arabic gum and locust bean gum; cellulosic binders such as, for example, hydroxy propyl cellulose, carboxy methyl cellulose, hydroxy ethyl cellulose, methyl cellulose and ethyl cellulose; 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.
    [0092] [0092] Non-tobacco fibers suitable for inclusion in homogenized tobacco material sheets are known in the art and include, but are not limited to: cellulose fibers; soft wood fibers; hardwood fibers; jute fibers, and combinations thereof. Prior to inclusion in the sheets of homogenized tobacco material, non-tobacco fibers can be treated by the appropriate processes known in the art including, but not limited to: mechanical pulp formation; refining; formation of chemical pulp; bleaching; pulping with sulfate; and their combinations.
    [0093] [0093] The sheets of homogenized tobacco material for use in forming the rods as described in the present invention must have a tensile strength sufficiently high to survive the bundling to form the rods. In certain embodiments, non-tobacco fibers that can be included in the sheets of homogenized tobacco material in order to obtain an appropriate tensile strength.
    [0094] [0094] For example, sheets of homogenized tobacco material for rod formation as described in the present invention may comprise between about 1% and about 5% by weight of non-tobacco fibers on a dry weight basis .
    [0095] [0095] Aerosol builders and humectants 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 -butane diol and glycerin; esters of polyhydric alcohols, such as glycerol mono-, di-triacetate; and aliphatic esters of mono-, di- or polycarboxylic acids, such as dimethyl dodecanedioate and dimethyl tetradecanedioate.
    [0096] [0096] For example, where rods according to the specification are suitable for use as aerosol-forming substrates in heated aerosol-generating articles, sheets of homogenized tobacco material for use in forming rods as described in the present The invention can have an aerosol builder content between about 5% and about 30% by weight on a dry weight basis. Rods that are suitable for use in the electrically operated and operated aerosol generating system that has a heating element may preferably include an aerosol former of more than 5% to about 30%. For rods that are suitable for use in an electrically operated aerosol generating system that has a heating element, the aerosol former may preferably be glycerin.
    [0097] [0097] It should be appreciated that the composition of the sheets of homogenized tobacco material can be designed to meet regulatory requirements.
    [0098] [0098] A number of reconstitution processes for producing sheets of homogenized tobacco materials are known in the art. These include, but are not limited to: papermaking processes of the type described, for example, in patent document US-A-3,860,012; casting or 'cast sheet' processes of the type described, for example, in patent document US-A-5,724,998; mass reconstitution processes of the type described, for example, in patent document US-A-3,894,544; and extrusion processes of the type described, for example, in patent document GB-A983,928. Typically, the densities of the sheets of homogenized tobacco material produced by extrusion processes and by mass reconstitution processes are greater than the densities of the sheets of homogenized tobacco materials produced by casting processes.
    [0099] [0099] The sheets of homogenized tobacco material for use in forming rods as described in the present invention are preferably formed by a casting process of the type which generally comprises the casting of a paste comprising particulate tobacco and a or more binders on a conveyor belt or other support surface, drying the hollow paste to form a sheet of homogenized tobacco material and removing the sheet of homogenized tobacco material from the support surface.
    [0100] [00100] For example, in certain embodiments, sheets of homogenized tobacco material can be formed from the pulp comprising particulate tobacco, guar gum, cellulose fibers and glycerin by a casting process.
    [0101] [00101] The sheets of homogenized tobacco material can be textured using appropriate machinery for the texturing of burlap, paper and other materials.
    [0102] [00102] For example, sheets of homogenized tobacco material for rod formation as described in the present invention can be crimped by using a crimping unit of the type described in patent document CH-A-691156, which comprises a pair of rotating crimping rollers. However, it should be appreciated that the sheets of homogenized tobacco material can be textured using other appropriate machinery and processes that deform or perforate the sheets of homogenized tobacco material.
    [0103] [00103] Rods according to the specification can be produced from sheets of homogenized tobacco material and sheets of thermally conductive material that have different dimensions depending on their intended use. The sheets of homogeneous tobacco material and thermally conductive material must be of sufficient width to be grouped together to form a rod as described in the present invention.
    [0104] [00104] Preferably, sheets of tobacco material and sheets of thermally conductive material for use in rods as described in the present invention have a width of at least about 25 mm.
    [0105] [00105] In certain embodiments, the sheets of material for use in the rods as described in the present invention can have a width between about 25 mm and about 300 mm.
    [0106] [00106] Preferably, the sheets of material that make up the rod have a combined thickness of at least about 50 µm to about 100 µm. The combined thickness refers to the total thickness of all the leaves that make up the rod. For example, if the rod is formed from two sheets, then the combined thickness is the sum of the thickness of each individual sheet. Tobacco material sheets for use in rods as described in the present invention can have individual thicknesses between about 25 µm and about 100 µm.
    [0107] [00107] In certain embodiments, sheets of tobacco material for use in rods as described in the present invention can have a thickness between 10 µm and about 300 µm.
    [0108] [00108] In certain embodiments, sheets of homogenized tobacco material for use in rods as described in the present invention can have a weight of 100 g / m2 and about 300 g / m2.
    [0109] [00109] Rods as described in the present invention may comprise a grouped sheet of homogenized tobacco material circumscribed by a porous or non-porous wrap.
    [0110] [00110] In certain embodiments, the rods as described in the present invention may comprise a sheet of homogenized tobacco material and a sheet of thermally conductive material grouped and circumscribed by a paper wrapper.
    [0111] [00111] Appropriate paper wrappers are known in the art and include, but are not limited to: cigarette papers; and filter plug wraps.
    [0112] [00112] In other embodiments, the rods as described in the present invention may comprise a non-paper wrap.
    [0113] [00113] Non-paper wraps suitable for use in forming rods as described in the present invention are known in the art and include, but are not limited to, homogenized tobacco materials.
    [0114] [00114] Rods as described in the present invention can be produced by using conventional cigarette making and cigarette filter making machinery, adapted to allow the grouping of two or more sheets simultaneously.
    [0115] [00115] For example, rods comprising a crimped sheet of homogeneous tobacco material and a sheet of thermally conductive material can be produced by using an adaptation of the machinery to form filter rods comprising a grouped crimped paper sheet of the type described in patent document CH-A-691156. The machinery could be adapted to allow a sheet of thermally conductive material to be bundled with the beaded tobacco sheet.
    [0116] [00116] A method of forming a rod can be provided, which comprises the steps of: providing a first continuous sheet of tobacco material, providing a second continuous sheet of tobacco material, simultaneous grouping of the first and second leaves continuous material of tobacco material transversely in relation to its longitudinal axes; circumscribing the grouped sheets of tobacco material with a wrap to form a continuous rod, and dividing the continuous rod into a plurality of distinct rods, wherein the first continuous sheet of tobacco material is physically or chemically different from the second continuous sheet of material tobacco.
    [0117] [00117] The method can also comprise the texturing of the first web. For example, the method may comprise crimping, shaping, perforating or texturing the first web before grouping the first web with the second web.
    [0118] [00118] Preferably, the method also comprises crimping the first web.
    [0119] [00119] Both the first and second continuous sheets can be textured, for example, crimped. Both the first and second sheets of tobacco material can be crimped before being grouped.
    [0120] [00120] The specific modalities will also be described, by way of example only, with reference to the attached drawings, in which:
    [0121] [00121] Figure 1 shows a schematic cross section of the apparatus for forming a rod according to a specific modality;
    [0122] [00122] Figure 2 shows a schematic cross section of the apparatus for forming a rod according to a specific modality;
    [0123] [00123] Figures 3 to 8 illustrate cross-sectional views of the tobacco material just before entering a grouping medium to be grouped on a rod;
    [0124] [00124] Figures 9 and 10 illustrate modalities of aerosol generating devices that incorporate the rods formed and described in the present invention; and
    [0125] [00125] Figure 11 illustrates an aerosol generating system comprising an electrically operated aerosol generating device and an aerosol generating article as illustrated in Figure 9.
    [0126] [00126] The apparatus shown in Figure 1 comprises in general: a feeding means for supplying a continuous sheet of homogenized tobacco material; a feeding means for providing a continuous sheet of aluminum foil material; a crimping means for crimping the web of homogenized tobacco material; a rod forming means for bundling the continuous crimped sheet of tobacco material homogenized with the continuous sheet of aluminum foil material and circumscribing the bundled material with a wrap to form a continuous rod; and a cutting means for dividing the continuous rod into a plurality of separate rods. The apparatus also comprises a means of transport for transporting the homogenized tobacco material web downstream through the apparatus, from the feed medium to the rod-forming medium through the crimping means.
    [0127] [00127] As shown in Figure 1, the feed means for supplying a continuous sheet of homogenized tobacco material comprises a continuous sheet of homogenized tobacco material 2 mounted on a first coil 4. The second feeding means for providing a second continuous sheet of homogenized tobacco material comprises a continuous sheet of homogenized tobacco material 3 mounted on a second coil 5. The crimping means comprises a pair of rotating crimping rolls 6. In use, the first continuous sheet of homogenized tobacco material 2 is extracted 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 crimping rollers 6, the crimping rollers couple and crimp the first web of homogenized tobacco material 2 to form a first web of crimped tobacco material. homogenized tobacco 8 having a plurality of ridges or corrugations separated from each other substantially parallel to the longitudinal axis of the homogenized tobacco material sheet through the apparatus.
    [0128] [00128] The first continuous crimped sheet of homogenized tobacco material 8 is transported downstream of the pair of crimping rollers 6 to the rod forming medium. The second web of homogenized tobacco material 3 is transported from the second reel 5 to the rod forming medium. Both the second continuous sheet of homogenized tobacco material 3 and the first continuous sheet of crimped homogenized tobacco material 8 are fed simultaneously through a funnel or a converging horn 10. The converging funnel 10 collects the continuous sheets of material 8, 3 transversely. in relation to its longitudinal axes. The continuous sheets of material 8, 3 assume a substantially cylindrical configuration as they pass through the converging funnel 10.
    [0129] [00129] With the withdrawal of the convergent funnel 10, the grouped sheets of homogenized tobacco material and the aluminum foil material are wrapped in a continuous sheet of wrapping material 12. The continuous sheet of wrapping material is fed from a coil 14 and wrapped around the continuous crimped sheet of tobacco material homogenized by an endless conveyor belt or a trim. As shown in Figure 1, the rod forming means comprises an adhesive application means 16 which applies adhesive to one of the longitudinal edges of the continuous sheet of wrapping material, so that when the opposite longitudinal edges of the continuous sheet of material surroundings are placed in contact, adhere to each other to form a continuous rod.
    [0130] [00130] The rod forming means also comprises a drying means 18 downstream of the adhesive application means 16 which, in use, dries the adhesive applied to the splicing of the continuous rod as the continuous rod is transported downstream of the rod-forming medium to the cutting medium.
    [0131] [00131] The cutting means comprises a rotary cutter 20 that divides the continuous rod into a plurality of separate rods of unit rod length or length of multiple unit rod.
    [0132] [00132] While the two continuous sheets of material are fed into the converging funnel as they are coated, one sheet on top of the other, the rod has an even distribution of the first sheet of tobacco material and the second sheet of tobacco material.
    [0133] [00133] Although the second continuous sheet of homogenized tobacco material is described as being grouped on a rod without being crimped, it is evident that this second continuous sheet can pass through a set of crimping rolls to be crimped before grouping in a rod.
    [0134] [00134] To manufacture a rod comprising a sheet of a first tobacco material and a continuous element of a second tobacco material that has a different chemical composition from the first tobacco material, the second sheet of tobacco material homogenized in the second coil (as illustrated in Figure 1) can be replaced by a coil that contains an appropriate continuous element. Such an element can take the form of a ribbon, strip, strap, or line. The operation of the process should then be as described above.
    [0135] [00135] In an alternative configuration illustrated in Figure 2, a second continuous sheet of homogenized tobacco material 3 is positioned in an overlapping relationship with a first continuous sheet of homogenized tobacco material 2 upstream of a pair of crimping rollers 6 The apparatus is then substantially as described above with respect to Figure 1.
    [0136] [00136] Both continuous sheets of material 2, 3 pass through the crimping rollers 6 in the overlapping relationship and are crimped simultaneously. A crimped pair of webs 9 passes out of the crimping rolls 6 and downstream towards the converging funnel 10 to be formed like a rod.
    [0137] [00137] Figures 3 to 8 provide schematic cross-sectional illustrations of possible different arrangements of two sheets of tobacco material just before entering a converging funnel or bugle in order to be grouped on a rod. All of these figures illustrate the relative thickness, width, and cross-sectional shape of each tobacco leaf. The dimension of the length of each of the sheets in these schematic illustrations extends to the plane of the paper.
    [0138] [00138] Figure 3 illustrates an arrangement in which a first sheet of tobacco material is 300 overlaid by a second sheet of tobacco material 310 with the same dimensions before both leaves enter a bundling device to be bundled into one rod. Although the physical dimensions of each leaf are the same, the chemical composition of each leaf is different.
    [0139] [00139] Figure 4 illustrates an arrangement in which a first sheet of tobacco material 400 is overlaid with a second sheet of tobacco material 410 which has a smaller thickness dimension compared to the first tobacco sheet 400. Although the dimensions physical properties of each leaf are different, since one leaf is thinner than the other, the chemical composition of each leaf may be identical. In preferred embodiments, however, the chemical composition of each leaf will also be different.
    [0140] [00140] Figure 5 illustrates an arrangement in which a first sheet of tobacco material 500 is positioned adjacent to a second sheet of tobacco material 510 with the same dimensions before both sheets enter a grouping device to be grouped into a rod. Although the physical dimensions of each leaf are the same, the chemical composition of each leaf is different.
    [0141] [00141] Figure 6 illustrates an arrangement in which a first sheet of tobacco material 600 is overlaid with a second sheet of tobacco material 610 before both leaves enter a bundling device to be bundled on a stick. The second sheet was crimped. The composition of the two sheets can be the same or different.
    [0142] [00142] Figure 7 illustrates an arrangement in which a first crimped sheet of tobacco material 700 is overlaid by a second crimped sheet of tobacco material 710 before both leaves enter a grouping device to be grouped on a stick. Although the physical dimensions of each leaf are the same, the chemical composition of each leaf is different.
    [0143] [00143] Figure 8 illustrates an arrangement in which a first sheet of tobacco material 800 is overlaid by a second sheet of tobacco material 810 before both sheets enter a bundling device to be bundled on a stick. The second sheet 810 has a smaller width and thickness compared to the first sheet 800.
    [0144] [00144] The skilled person will appreciate that multiple more arrangements of two or more sheets of tobacco material may be possible.
    [0145] [00145] Figure 9 illustrates an embodiment of an aerosol generating article 1000 comprising a rod as described in the present invention. Article 1000 comprises 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 assembled by a cigarette paper 1060 to form the article aerosol generator 1000. Article 1000 has an end of the mouth 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 end of the mouth 1012. The modality of a generating article aerosol dispenser illustrated in Figure 9 is particularly suitable for use with an electrically operated aerosol generating device comprising a heater for heating the aerosol-forming substrate.
    [0146] [00146] When assembled, article 1000 is about 45 mm long and has an outside diameter of about 7.2 mm and an inside diameter of about 6.9 mm.
    [0147] The aerosol-forming substrate 1020 comprises a rod formed from a first sheet of crimped hollow tobacco and a second sheet of aluminum foil wrapped in filter paper (not shown) to form a plug. Both hollow-leaf tobacco leaves include additives, including glycerin as an aerosol-forming additive. The first hollow-leaf tobacco leaf and the second hollow-leaf tobacco leaf comprise different mixtures of tobacco and therefore differ chemically.
    [0148] [00148] An aerosol generating article 1000 as illustrated in Figure 9 is designed to couple with an aerosol generating device in order to be consumed. Such an aerosol generating device includes a means 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.
    [0149] [00149] Once coupled with an aerosol generating device, a user brings in the end of the mouth 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, the volatile compounds are evolved from the hollow-leaf tobacco sheet of the aerosol-forming substrate 1020. These compounds condense to form an aerosol. The aerosol is pulled through the 1050 filter and into the user's mouth.
    [0150] [00150] Figure 10 illustrates a second embodiment of an aerosol generating article 1001. Although the article of Figure 9 is to be consumed in conjunction with an aerosol generating device, the article of Figure 10 comprises a combustible heat source 1080 which can be ignited and transfer heat to the aerosol-forming substrate 1020 to form an inhalable aerosol. The fuel heat source 80 is a charcoal element that is mounted in the vicinity of the aerosol-forming substrate at a distal end 13 of the rod 11. The elements that are essentially the same as the elements in Figure 9 have been given the same numbering.
    [0151] [00151] Figure 11 illustrates a part of an electrically operated aerosol generating system 2000 that uses a heating blade 2100 to heat an aerosol generating substrate 1020 of an aerosol generating article 1000. The heating blade is mounted inside a 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. Air flow is indicated by arrows in Figure 11. The aerosol generating device comprises a power supply and electronic components, which are not illustrated in Figure 11. The aerosol generating article 1000 of Figure 11 is as described with respect to Figure 9. EXAMPLE 1
    [0152] [00152] Rods according to a first specific modality that comprise a first crimped sheet of homogenized tobacco material grouped with a second crimped sheet of homogenized tobacco material and circumscribed by a paper wrapper. The rods have a rod length of 12 mm and diameters between 6.9 mm and 7.2 mm. The rods were produced at rates between 20 m / min and 25 m / min when using a device of the type shown in Figure 1.
    [0153] [00153] The first continuous sheet of homogenized tobacco material was produced by a casting process, and the sheets have a width between 110 mm and 134 mm, a thickness of 120 µm to 260 µm, a weight between 167 g / m2 and 201 g / m2, and a moisture content between 5% and 12%. The first web comprises about 10% by weight of glycerin.
    [0154] [00154] The second continuous sheet of homogenized tobacco material was produced by a casting process, and the sheets have a width between 110 mm and 134 mm, a thickness of 120 µm to 260 µm, a weight between 167 g / m2 and 201 g / m2 and a moisture content between 5% and 12%. The second web comprises about 10% by weight of propylene glycol.
    [0155] [00155] The first continuous sheet of homogenized tobacco and the second continuous sheet of homogenized tobacco were crimped when arranged in an overlapping relationship and when passing together through a crimping roll before bundling on a rod.
    [0156] [00156] The exemplary modalities and the example described above are not limiting. In view of the exemplary modalities discussed above, other modalities consistent with the exemplary modality above will now be apparent to an element versed in the technique.
    权利要求:
    Claims (10)
    [0001]
    Rod characterized by the fact that it comprises a first leaf (2) of a first tobacco material and a second leaf (3) formed of a second tobacco material grouped with the first leaf (2) of the first tobacco material and circumscribed by a wrap, in which both the first tobacco material and the second tobacco material consist of homogenized tobacco material, and the second tobacco material is chemically different from the first tobacco material, in which the first and second leaves (2,3) of tobacco material are crimped sheets of material so that the first and second sheets (2,3) have a plurality of ridges or corrugations parallel to the axis of the rod, and the first sheet (2) of tobacco material is crimped in one differently than the second sheet of tobacco material.
    [0002]
    Rod according to claim 1, characterized in that the first and second tobacco materials comprise an aerosol former, the weight ratio in the aerosol former and the first tobacco material being different from the weight ratio between the former. aerosol in the second tobacco material.
    [0003]
    A rod according to claim 1 or 2, characterized in that the first tobacco material comprises a first aerosol former and the second tobacco material comprises a second aerosol former different from the first aerosol former.
    [0004]
    Rod according to any preceding claim characterized by the fact that it comprises an additional continuous element of a third tobacco material.
    [0005]
    Aerosol-generating article (1000), characterized in that it comprises a rod as defined in any one of claims 1 to 4.
    [0006]
    Aerosol-forming substrate (1020) for a heated aerosol-generating article characterized by the fact that it comprises a rod as defined in any one of claims 1 to 4.
    [0007]
    Aerosol-generating article characterized by the fact that it comprises a combustible heat source and an aerosol-forming substrate (1020) as defined in claim 6, located downstream of the combustible heat source.
    [0008]
    Aerosol generating article for use in an electrically operated aerosol generating system characterized by the fact that it comprises an aerosol forming substrate (1020) as defined in claim 6.
    [0009]
    System characterized by the fact that it comprises an electrically operated aerosol generating apparatus and an aerosol generating article (1000) for use with the apparatus, the aerosol generating article comprising an aerosol forming substrate (1020) as defined in claim 6.
    [0010]
    A rod formation method as defined in any one of claims 1 to 4, characterized in that it comprises the steps of: providing a first continuous sheet (2) of a first tobacco material; providing an additional web of a second tobacco material; crimping differently the first web (2) and the additional web, so that the first web (2) and the additional web have a plurality of ridges or corrugations parallel to the rod axis; simultaneously grouping the first continuous sheet (2) and the additional continuous element; circumscribing the first and second tobacco materials grouped with a wrap to form a continuous rod; and cutting the continuous rod into a plurality of separate rods, in which both the first tobacco material and the second tobacco material consist of homogenized tobacco material, and the first tobacco material being chemically different from the second tobacco material.
    类似技术:
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    BR112014029622B1|2020-12-08|rod for use as an aerosol-generating substrate in a heated aerosol-generating article, smoking article, aerosol-forming substrate for an aerosol-generating article, system and heated aerosol-generating article and method of forming a rod
    BR112014029583B1|2021-09-14|SUBSTRATE AND METHOD FOR THE FORMATION OF THERMALLY CONDUCTING RODS, AND AEROSOL GENERATING ARTICLE AND SYSTEM
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    US11272732B2|2022-03-15|Rods for use in smoking articles
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    同族专利:
    公开号 | 公开日
    KR20150024324A|2015-03-06|
    RU2014153579A|2016-07-20|
    CA2875167A1|2013-12-05|
    HK1203776A1|2015-11-06|
    US20150150302A1|2015-06-04|
    EP2854576B1|2020-12-23|
    ZA201408251B|2016-08-31|
    AU2013269589A1|2015-01-22|
    TW201404317A|2014-02-01|
    TWI605764B|2017-11-21|
    IN2014DN09647A|2015-07-31|
    PH12014502504B1|2014-12-22|
    PH12014502504A1|2014-12-22|
    MX2014014618A|2015-02-12|
    CN104411191B|2019-07-05|
    KR102157037B1|2020-09-21|
    ES2842936T3|2021-07-15|
    WO2013178766A1|2013-12-05|
    PL2854576T3|2021-07-26|
    EP2854576A1|2015-04-08|
    BR112014029738A2|2017-06-27|
    AU2018200641B2|2020-02-06|
    UA118086C2|2018-11-26|
    MY173256A|2020-01-09|
    AR091210A1|2015-01-21|
    RU2628987C2|2017-08-23|
    IL235629D0|2015-01-29|
    JP2015517817A|2015-06-25|
    JP6403666B2|2018-10-10|
    CN108514152B|2021-09-21|
    CN104411191A|2015-03-11|
    SG11201407906TA|2014-12-30|
    AU2018200641A1|2018-02-15|
    NZ703083A|2016-08-26|
    CN108514152A|2018-09-11|
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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| B06A| Patent application procedure suspended [chapter 6.1 patent gazette]|
    2021-01-12| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-03-23| 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 30/05/2013, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    EP12170356|2012-05-31|
    EP12170356.5|2012-05-31|
    PCT/EP2013/061208|WO2013178766A1|2012-05-31|2013-05-30|Blended rods for use in aerosol-generating articles|
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