US20220071277A1 - Tobacco rod for flavor inhaler - Google Patents

Tobacco rod for flavor inhaler Download PDF

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Publication number
US20220071277A1
US20220071277A1 US17/527,712 US202117527712A US2022071277A1 US 20220071277 A1 US20220071277 A1 US 20220071277A1 US 202117527712 A US202117527712 A US 202117527712A US 2022071277 A1 US2022071277 A1 US 2022071277A1
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US
United States
Prior art keywords
flavor
tobacco rod
cylindrical container
rod according
longitudinal direction
Prior art date
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Pending
Application number
US17/527,712
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English (en)
Inventor
Hirofumi FUJIKURA
Kaori TAKAI
Takeshi SHINKAWA
Kimitaka UCHII
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Tobacco Inc
Original Assignee
Japan Tobacco Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Japan Tobacco Inc filed Critical Japan Tobacco Inc
Assigned to JAPAN TOBACCO INC. reassignment JAPAN TOBACCO INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FUJIKURA, HIROFUMI, TAKAI, Kaori, SHINKAWA, TAKESHI, UCHII, Kimitaka
Publication of US20220071277A1 publication Critical patent/US20220071277A1/en
Pending legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/01—Making cigarettes for simulated smoking devices
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/14—Machines of the continuous-rod type
    • A24C5/18—Forming the rod
    • A24C5/1821—Forming the rod containing different tobacco mixtures, e.g. composite rods
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/14—Machines of the continuous-rod type
    • A24C5/18—Forming the rod
    • A24C5/1885—Forming the rod for cigarettes with an axial air duct
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00—Cigars; Cigarettes
    • A24D1/20—Cigarettes specially adapted for simulated smoking devices
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/05—Devices without heating means
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/20—Devices using solid inhalable precursors
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/42—Cartridges or containers for inhalable precursors

Definitions

  • the present invention relates to a tobacco rod for a flavor inhaler, and more particularly, it relates to a tobacco rod for a direct heating type or indirect heating type flavor inhaler.
  • PTL 1 discloses a heating type smoking article including a gathered or crimped tobacco material sheet.
  • a flavor source of a direct heating type flavor inhaler is heated at a lower temperature than a conventional combustion type tobacco, and a flavor source of an indirect heating type flavor inhaler is not directly heated. Therefore, in the direct heating type flavor inhaler and the indirect heating type flavor inhaler, a flavor component does not have a high volatilization property as compared with that of the conventional combustion type tobacco.
  • an object of the present invention is to provide a tobacco rod for a flavor inhaler having high volatilization efficiency of a flavor component.
  • the present inventors made earnest studies to find that the above-described problem can be solved by a tobacco rod in which a plurality of segments are connected to one another in such a manner that channels of the segments are discontinuous. Specifically, the above-described problem is solved by the following present invention.
  • a tobacco rod for a flavor inhaler comprising a plurality of rod-shaped segments connected to one another, in which each of the segments includes a cylindrical container and a flavor source including tobacco filled in the cylindrical container, the flavor source being filled in such a manner as to form, over a longitudinal direction, a channel for causing a flavor component to pass therethrough, and the channels of the segments are discontinuously connected at the connecting portion.
  • a side surface of the cylindrical container is made of a material selected from the group consisting of paper, a resin, a metal, and a combination thereof.
  • a direct heating type or indirect heating type flavor inhaler comprising the tobacco rod according to any one of the embodiments 1 to 8.
  • An ultrasonic vibration type flavor inhaler comprising the tobacco rod according to the embodiment 1.
  • the present invention can provide a tobacco rod for a flavor inhaler having high volatilization efficiency of a flavor component.
  • FIG. 1 is a schematic diagram of a tobacco rod.
  • FIG. 2 is a cross-sectional view of a segment according to one embodiment.
  • FIG. 3 illustrates a schematic diagram and a cross-sectional view of the segment according to another embodiment.
  • FIG. 4 is a conceptual diagram of a direct heating type flavor inhaler.
  • FIG. 5 is a conceptual diagram of an indirect heating type flavor inhaler.
  • FIG. 6 is a conceptual diagram of an indirect heating type flavor inhaling system according to one embodiment.
  • FIG. 7 is a cross-sectional view of a cartridge according to one embodiment.
  • FIG. 8 is a conceptual diagram illustrating a method for producing a tobacco rod.
  • FIG. 9 is a diagram of correlation between the number of segments and a volatilization property of a flavor component.
  • X to Y embraces end values of X and Y.
  • a tobacco rod refers to a cylindrical member that generates a flavor.
  • a side on a mouthpiece end of the tobacco rod is referred to as the “downstream” side, and the other side is referred to as the “upstream” side.
  • the outline of the tobacco rod is illustrated in FIG. 1 .
  • FIG. 1 is a perspective view of the tobacco rod.
  • a reference sign 1 denotes the tobacco rod
  • a reference sign is denotes a segment included in the tobacco rod 1
  • a reference sign 1 c denotes a channel for causing a flavor component to pass therethrough over a longitudinal direction.
  • the channels 1 c are connected to each other discontinuously at a connecting surface between the segments 1 s .
  • connection discontinuously means that the channels are connected to overlap with each other not wholly but partially.
  • one channel 1 c in each segment 1 s is illustrated in this drawing for ease of understanding, there can be present a plurality of channels 1 c .
  • one or more discontinuously connected channels may be formed over the longitudinal direction of the tobacco rod 1 .
  • the channels provided over the longitudinal direction may have one or more discontinuously connected sites. For example, when three rod-shaped segments are present, either a connecting portion between the first and second segments or a connecting portion between the second and third segments may have a discontinuously connected site.
  • a time when aerosol stays in the tobacco rod 1 can be extended, and hence, volatilization efficiency of a flavor component can be improved.
  • An example of a substance to be used for comparison of a volatilization property of a flavor component includes nicotine.
  • the cross-sectional shape of the tobacco rod 1 is not limited, and can be a circular, elliptical, polygonal, or rounded polygonal shape.
  • the size of the cross-sectional shape of the tobacco rod 1 is not limited, and the maximum length (hereinafter also referred to as the “width”) is preferably 1 mm or more, and more preferably 3 mm or more.
  • the upper limit is preferably 9 mm or less, and more preferably 7 mm or less.
  • the length of the tobacco rod 1 is preferably 40 mm or less, and more preferably 25 mm or less.
  • the lower limit is preferably 1 mm or more, and more preferably 5 mm or more.
  • the length of the segment 1 s can be appropriately adjusted depending on the length of the tobacco rod 1 and the number of segments.
  • the segment is comprises a flavor source 10 including tobacco.
  • the flavor source 10 including tobacco (hereinafter also simply referred to as the “flavor source”) forms a channel through which aerosol flows over the longitudinal direction of the segment 1 s . Therefore, the flavor source 10 including tobacco is preferably a flavor generating sheet.
  • the flavor generating sheet can be a sheet in which a component capable of generating a flavor is supported on a sheet substrate, or a sheet made of a material that generates a flavor. Examples of the component capable of generating a flavor include a smoking flavor component contained in a tobacco raw material, and a perfume component such as menthol.
  • the sheet substrate can be, for example, a tobacco material such as a compressed tobacco pellet or a tobacco powder, and is preferably a tobacco material.
  • the flavor generating sheet may contain a tobacco-derived material in either the sheet substrate or the component capable of generating a flavor, and in one embodiment, a tobacco sheet in which a component capable of generating a flavor if necessary is supported on a substrate sheet of a tobacco material is preferably used.
  • FIG. 2 is a cross-sectional view of the segment 1 s in which a flavor generating sheet 10 s is folded to be filled in the cylindrical container 12 as the flavor source 10 .
  • FIG. 2 ( 1 ) illustrates an embodiment in which the flavor generating sheet 10 s not having been subjected to a surface treatment is filled
  • FIG. 2 ( 2 ) illustrates an embodiment in which the flavor generating sheet 10 s having been subjected to a surface treatment such as crimping is filled.
  • the number of flavor generating sheets to be filled is not limited, can be 1 to 3, and is preferably 1 from the viewpoint of manufacturability.
  • the amount of the flavor source 10 to be filled is appropriately adjusted, and in one embodiment, the amount is preferably 40 to 90% by volume based on the volume of the cylindrical container 12 .
  • a more preferable lower limit is 50% by volume or more, 55% by volume or more, or 60% by volume or more, and a more preferable upper limit is 60% by volume or less, 65% by volume or less, 70% by volume or less, 80% by volume or less, or 90% by volume or less.
  • the channels may have substantially uniform cross-sectional areas, or there may be one or more channels having larger cross-sectional areas than the others. In the later embodiment, it is preferable that the channels having the larger cross-sectional areas are discontinuously connected.
  • the flavor generating sheet 10 s is used as the flavor source 10 , at least one surface of the sheet is preferably subjected to a surface treatment.
  • the surface treatment refers to a process for forming a plurality of irregularities on the front surface or the rear surface of the flavor generating sheet 10 s .
  • the surface treatment is not especially limited, and crimping process, embossing process, debossing process, half cutting process, or the like can be performed.
  • the crimping process is a process for forming wrinkles in the sheet.
  • the crimping process can be performed by forming wrinkles extending orthogonally to a sheet conveyance direction on both the front surface and the rear surface of the flavor generating sheet 10 s .
  • the thus formed projections extend orthogonally to the sheet conveyance direction.
  • a pitch between apexes of the projections provided on the rollers is preferably 0.5 to 2.0 mm.
  • an apex angle is preferably 30 to 70 degrees.
  • the embossing process and the debossing process refer to a process for forming recesses on one surface or both surfaces of the sheet by pressing a pointed working tool against the sheet
  • the half cutting process refers to a process for forming, on one surface or both surfaces of the sheet, a notch having a depth sufficiently small not to cut the sheet, preferably a depth equal to or smaller than a half of the thickness of the sheet.
  • a strip-shaped sheet refers to a sheet having a length in a short direction, on a principal surface, smaller than the cross-sectional dimension of the cylindrical container 12 .
  • FIG. 3 ( 1 ) illustrates the outline of this embodiment.
  • a reference sign 10 r denotes the strip-shaped flavor generating sheet.
  • the strip-shaped flavor generating sheets 10 r are filled with the longitudinal direction aligned substantially in parallel to the longitudinal direction of the cylindrical container 12 .
  • FIG. 3 ( 2 ) is a cross-sectional view of the segment 1 s of this embodiment.
  • the strip-shaped flavor generating sheet 10 r may be subjected to the surface treatment.
  • a production method disclosed in Japanese Patent Laid-Open No. 62-272962 is known, and the segment 1 s of the present invention can also be produced by the method described in this publication.
  • a reconstituted tobacco sheet is preferably used as a sheet material instead of a recycled tobacco material, and as the reconstituted tobacco sheet, a sheet obtained by a papermaking process, a slurry sheet, or a cast sheet is preferably used.
  • a strip of a sheet material pulled out of a bobbin may be subjected to the surface treatment described in the above paragraph before being caused to pass through cutting means.
  • the flavor generating sheet 10 s can be prepared by a known method.
  • the flavor generating sheet 10 s can be prepared by a known method of, for example, a papermaking, slurry, or rolling method. Specifically, in employing the papermaking method, it can be produced by a method comprising the following steps: 1) A dried leaf tobacco raw material is coarsely crushed, and the resultant is separated into a water extract and a residue through extraction with water. 2) The water extract is concentrated by vacuum drying. 3) Pulp is added to the residue, and the resultant is fiberized with a refiner, followed by papermaking. 4) A concentrate of the water extract is added to a sheet resulting from the papermaking, and the resultant is dried to obtain a tobacco sheet.
  • the shape of the flavor generating sheet 10 s is not limited, and the principal surface of the sheet is preferably in a rectangular shape.
  • the thickness is not limited, and in consideration of highly efficient heat exchange and the strength of a flavor generating segment, is preferably 200 to 600 ⁇ m.
  • One side A of the flavor generating sheet 10 s preferably has the same length as the length in the longitudinal direction of the cylindrical container 12 .
  • the length of the other side B of the flavor generating sheet 10 s is appropriately adjusted, and in one embodiment, is 1 to 10 times as long as the length of A.
  • the strip-shaped flavor generating sheet 10 r can be prepared by cutting the flavor generating sheet 10 s .
  • a length a in the longitudinal direction of the strip-shaped flavor generating sheet 10 r is preferably the same as the length in the longitudinal direction of the cylindrical container 12 .
  • a length b in the short direction of the strip-shaped flavor generating sheet 10 r is appropriately adjusted, and in one embodiment, is about 0.4 to 3.0 mm, preferably 0.6 to 2.0 mm, and more preferably 0.8 to 1.5 mm.
  • the flavor source 10 may include an aerosol source.
  • An example of the aerosol source includes polyol such as glycerin, propylene glycol, or 1,3-butanediol.
  • the amount of the aerosol source to be added is preferably 5 to 50% by weight, and more preferably 10 to 30% by weight based on a dry weight of the flavor source 10 .
  • the aerosol source included in the flavor source 10 is referred to also as the “internal aerosol source”.
  • the tobacco rod 1 is suitably used for the direct heating type flavor inhaler.
  • the flavor source 10 for the indirect heating type flavor inhaler preferably does not include the internal aerosol source.
  • the cylindrical container 12 is made of a known material.
  • a side surface of the cylindrical container 12 is made of a material selected from the group consisting of paper, a resin, a metal, and a combination thereof.
  • the cylindrical container 12 is preferably made of a resin from the viewpoint of handleability.
  • the resin include polypropylene, polyethylene terephthalate, polyethylene, ABS, and a polylactic acid resin.
  • the thickness of a side surface portion is not limited, and is preferably about 0.4 to 1.0 mm, more preferably about 0.6 to 0.8 mm, and further preferably about 0.7 mm.
  • its side surface is preferably made of a laminate of paper with a resin film such as a polyethylene film, polyvinyl alcohol, or polylactic acid, a laminate of paper with a thin layer formed by coating a solution of a polysaccharide/mucopolysaccharide, such as alginic acid, carrageenan, carboxymethyl cellulose, xanthan gum, guar gum, pectin, mannose, glucuronic acid, locust bean gum, gellan gum, starch, oxidized starch, processed starch, hyaluronic acid, or chondroitin sulfate, a laminate of paper with a metal foil such as an aluminum foil, or cardboard.
  • a resin film such as a polyethylene film, polyvinyl alcohol, or polylactic acid
  • the number of layers in the laminate is not limited, and a three-layer structure of a paper layer/a resin layer (or a metal foil layer, or a polysaccharide/mucopolysaccharide layer)/a paper layer is preferably employed. Since the paper layer is exposed in such a laminate, it can be sufficiently adhered with a vinyl acetate adhesive or a hot melt adhesive when wound. At this point, sufficient peel strength (22.4 g to 28.0 g) can be attained, and adhesive peeling otherwise caused after winding can be reduced.
  • An example of the paper includes Sandwich Laminate #85/S52 manufactured by Nippon Paper Papylia Co., Ltd. (thickness: 220 ⁇ m, basis weight: 85/52 gsm, stiffness: 145 cm 3 /100).
  • the thickness of the resin layer is preferably 12 to 70 ⁇ m, and more preferably 17 to 20 ⁇ m.
  • the cardboard has permeability of preferably less than 50 coresta units, more preferably less than 15 coresta units, and further preferably less than 1 coresta unit.
  • the thickness is preferably 100 to 150 ⁇ m, and the basis weight is preferably about 80 to 150 gsm.
  • the cardboard can be one containing 87.5% by weight of kraft pulp, 5% by weight of an inorganic filler, 0.5% by weight of starch, and about 7% by weight of moisture. Such cardboard is available from, for example, Julius Glatz GmbH.
  • the side surface of the cylindrical container 12 has permeability of preferably less than 1 coresta unit, and more preferably 0 coresta unit.
  • a coresta unit refers to air flow volume (cm 3 ) per cm 2 and per minute under a condition of 100 mm H 2 O.
  • the permeability can be measured using an permeability meter PPM100 manufactured by FILTRONA, USA.
  • One end or both ends of the cylindrical container 12 may be opened, or may be closed with retaining the permeability. If the end is closed, the end is preferably made of the above-described material.
  • the dimension of the cylindrical container 12 is appropriately adjusted to attain the above-described dimension of the tobacco rod 1 .
  • the cylindrical container 12 may be continuous over a plurality of segments 1 s.
  • the direct heating type flavor inhaler refers to an article that generates a flavor by heating the flavor source 10 .
  • FIG. 4 illustrates one embodiment of the direct heating type flavor inhaler.
  • a reference sign 100 denotes the direct heating type flavor inhaler
  • the reference sign 1 denotes the tobacco rod
  • a reference sign 2 denotes a mouthpiece
  • a reference sign 20 denotes a cooling portion
  • a reference sign 22 denotes a filter
  • a reference sign 3 denotes a wrapper.
  • the mouthpiece is not limited in the dimension, and preferably has the same width as the tobacco rod 1 , and preferably has a length of 26 to 50 mm.
  • the filter 22 is preferably made of a material usually used in this field, such as a cellulose acetate filter.
  • the length of the filter 22 is preferably 12 to 60% of the whole length of the mouthpiece.
  • the cooling portion 20 has a function to cool aerosol.
  • the cooling portion 20 may be hollow, or may have a cooling element such as a polylactic acid film.
  • the cooling portion 20 may be provided with ventilation.
  • the length of the cooling member 20 is preferably 8 to 77% of the whole length of the mouthpiece 2 .
  • the wrapper 3 the laminate of paper with a resin film such as a polyethylene film, the laminate of paper with a thin film formed by drying a solution of a saccharide/polysaccharide, the laminate of paper with a metal foil such as an aluminum foil, the cardboard described above or the like can be used.
  • the cylindrical container 12 may be elongated to also work as the wrapper 3 as illustrated in FIG. 4 ( 1 ).
  • the wrapper 3 may be provided outside the cylindrical container 12 as illustrated in FIG. 4 ( 2 ).
  • the cylindrical container 12 is preferably made of the resin or the cardboard.
  • the direct heating type flavor inhaler is heated by a known heater.
  • the heater is preferably capable of electrically heating the tobacco rod 1 to 200 to 400° C.
  • the direct heating type flavor inhaler is classified into an internal heating type in which the heater is inserted into the tobacco rod 1 , and an external heating type in which the heater is provided around the tobacco rod 1 . In the present invention, the latter is preferred because the structure of the channels is not changed before and after the heater is installed.
  • a combination of the direct heating type flavor inhaler and the heater is also referred to as a direct heating type flavor inhaling system.
  • the indirect heating type flavor inhaler refers to an article that generates a flavor without directly heating the flavor source but generating aerosol from the aerosol source disposed on the upstream side to cause a flavor component from the flavor source to be carried on the aerosol.
  • FIG. 5 illustrates an embodiment of the indirect heating type flavor inhaler.
  • a reference sign 200 denotes an indirect heating type flavor inhaler
  • a reference sign 1 denotes a tobacco rod
  • a reference sign 1 s denotes a segment
  • a reference sign 3 denotes a wrapper
  • a reference sign 4 denotes an atomizing portion
  • a reference sign 5 denotes an external aerosol source
  • a reference sign 7 denotes an outer frame.
  • the external aerosol source 5 is disposed on the upstream side of the tobacco rod 1 , and aerosol is generated by the atomizing portion 4 .
  • the atomizing portion 4 is preferably capable of electrically heating the external aerosol source 5 to about 200 to 300° C. Through this heating, the aerosol is generated, and the aerosol is introduced into the tobacco rod 1 , passes therethrough while the flavor source is exposed to an atmosphere of 30 to 40° C., and carries the flavor component which is then inhaled by a user.
  • a combination of the indirect heating type flavor inhaler and a power supply is also referred to as an indirect heating type flavor inhaling system.
  • Known indirect heating type flavor inhaler and indirect heating type flavor inhaling system are disclosed in, for example, International Publication No. WO2016/075749.
  • FIG. 6 illustrates a preferable embodiment of the indirect heating type flavor inhaling system.
  • a reference sign 210 denotes the indirect heating type flavor inhaling system
  • a reference sign 203 denotes a power supply unit
  • a reference sign 210 denotes a cartridge.
  • the cartridge 201 is detachable from the power supply unit 203 .
  • the cartridge 201 includes the external aerosol source 5 , the atomizing portion 4 , and a passage 6 .
  • the tobacco rod 1 is housed in a space disposed at the mouthpiece end in the cartridge 201 .
  • the tobacco rod 1 is housed in the space within the cartridge 201 to constitute the indirect heating type flavor inhaler 200 .
  • the cartridge 201 may have a filter at the mouthpiece end.
  • the external aerosol source 5 can be configured by causing the above-described aerosol source to be supported on a porous material such as a fiber filler.
  • the length of the external aerosol source 5 is not limited, and is preferably 10 to 25 mm.
  • the power supply unit 203 includes a power supply such as a battery, and atomizes the aerosol source without causing combustion.
  • the outer frame 7 of the indirect heating type flavor inhaler can be a resin housing.
  • the side wall of the cartridge 201 corresponds to the outer frame 7 .
  • the tobacco rod of the present invention can be used also for an ultrasonic vibration type flavor inhaler, that is, one application of the indirect heating type flavor inhaler.
  • the ultrasonic vibration type flavor inhaler refers to a flavor inhaler employing a system in which an ultrasonic oscillator is used in the atomizing portion to generate aerosol by vibrating the external aerosol source.
  • the tobacco rod 1 of the present invention is produced preferably through the following steps:
  • Step 1 A precursor comprises a cylindrical container and a flavor source including tobacco filled in the cylindrical container is provided, the flavor source being filled in such a manner as to form, over the longitudinal direction, channels for causing a flavor component to pass therethrough.
  • Step 2 The precursor is cut in a direction vertical to the longitudinal direction to prepare two or more of the segments described above.
  • Step 3 One or more of the segments are rotated in a circumferential direction around a longitudinal direction axis.
  • FIG. 8 The outline of the production method is illustrated in FIG. 8 .
  • a reference sign 1 ′ denotes the precursor
  • a reference sign Y denotes the longitudinal direction axis
  • a reference sign Z denotes a cut position.
  • the precursor can be prepared in the same manner as the segment 1 s.
  • the precursor 1 ′ is cut in the direction vertical to the longitudinal direction.
  • the precursor 1 ′ is cut in the positions Z in FIG. 8 .
  • one or more of the segments are rotated in the circumferential direction around the longitudinal direction axis.
  • the longitudinal direction axis refers to an axis passing through the centers of a front edge surface and a rear edge surface.
  • the angle of the rotation is not limited as long as discontinuously connected channels can be formed.
  • FIG. 8 illustrates an embodiment in which the center segment is rotated in the circumferential direction by about 30 degrees.
  • a tobacco sheet obtained by a papermaking process (thickness: 200 ⁇ m, basis weight: 71 g/m 2 , nicotine amount: 1.4% by weight) was treated with an alkaline aqueous solution of pH 9.6.
  • the thus prepared flavor generating sheet was cut into a square shape having a side of 21 mm, and a weight of 310 mg.
  • a polypropylene straw having a diameter of 8 mm, a wall thickness of 0.2 mm, and a length of 21 mm was provided.
  • the cut flavor generating sheet was folded and filled within the straw to prepare a precursor.
  • the precursor had a cross-section in a shape as illustrated in FIG. 2 ( 1 ).
  • the precursor was cut, vertically to the longitudinal direction, into three equal portions to obtain three segments.
  • the center segment was rotated in the circumferential direction around a central axis in the longitudinal direction by 120 degrees. Thereafter, the three segments were connected to one another by winding these with one piece of tipping paper, and thus, a tobacco rod including three segments was produced.
  • the indirect heating type flavor inhaling system illustrated in FIG. 6 was provided.
  • the length of the cartridge 201 was 21 mm, which was the same as that of the tobacco rod 1 .
  • the system was used to perform machine smoking of 20 puffs.
  • a sample was prepared in accordance with the humidity controlling/conditioning method for tobacco and tobacco products defined by ISO (the International Organization for Standardization) 3402: 1999 (Non Patent Literature).
  • ISO the International Organization for Standardization
  • a machine smoking method and a method for collecting a generated aerosol were performed in accordance with CORRESTA RECOMMENDED METHOD No.
  • a Cambridge filter in which the aerosol had been trapped was collected to measure a nicotine amount by gas chromatography.
  • a Cambridge filter is a flat circular glass fiber filter having a diameter of about 44 mm and a thickness of 1.5 mm, and is known to and widely used by those skilled in the art as a filter capable of trapping a particulate matter.
  • the Cambridge filter is available from Cambridge Filter Japan, Ltd., Borgwalt (Catalog No. 8020 285 2) and the like.
  • TPM total particle matter
  • a precursor was prepared in the same manner as in Example 1. Subsequently, the precursor was cut into five equal portions to obtain five segments. The second and fourth segments were rotated in the circumferential direction around the central axis in the longitudinal direction by 72 degrees, and thus, a tobacco rod including five segments was prepared. This tobacco rod was evaluated in the same manner as in Example 1.
  • a tobacco sheet obtained by a papermaking process which was the same as that used in Example 1, was provided. Subsequently, the resultant sheet was subjected to a surface treatment using a crimping roller. As the crimping roller, a chevron roller (60 degrees, 1 mm pitch) was used. In this manner, a flavor generating sheet was prepared. The flavor generating sheet was cut into a square shape having a side of 21 mm, and a weight of 310 mg. The thus cut sheet was used to produce a tobacco rod including five segments in the same manner as in Example 3, and the resultant was evaluated.
  • Tobacco rods respectively including one and five segments were produced in the same manner as in Examples 1 and 3 except that the precursor was directly used as a tobacco rod without cutting, and the resultants were evaluated. Results are shown in Table 1 and FIG. 9 .
  • the tobacco rods of the examples had higher values, than those of the comparative examples, of a ratio of the flavor component contained in the particulate matter of the aerosol generated from the tobacco rod. It is thus obvious that the tobacco rod of the present invention has an excellent volatilization property for a flavor component.

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  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
US17/527,712 2019-05-17 2021-11-16 Tobacco rod for flavor inhaler Pending US20220071277A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2019/019659 WO2020234916A1 (fr) 2019-05-17 2019-05-17 Tige a tabac pour inhalateur d'arôme

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2019/019659 Continuation WO2020234916A1 (fr) 2019-05-17 2019-05-17 Tige a tabac pour inhalateur d'arôme

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US20220071277A1 true US20220071277A1 (en) 2022-03-10

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WO2023188376A1 (fr) * 2022-03-31 2023-10-05 日本たばこ産業株式会社 Unité d'atomisation, procédé de fabrication associé et appareil d'inhalation
WO2023188375A1 (fr) * 2022-03-31 2023-10-05 日本たばこ産業株式会社 Unité d'atomisation et son procédé de fabrication, et inhalateur
WO2023188373A1 (fr) * 2022-03-31 2023-10-05 日本たばこ産業株式会社 Unité d'atomisation, procédé de production associé et dispositif d'inhalation
WO2023188377A1 (fr) * 2022-03-31 2023-10-05 日本たばこ産業株式会社 Unité d'atomisation, son procédé de fabrication et outil d'inhalation
WO2023188372A1 (fr) * 2022-03-31 2023-10-05 日本たばこ産業株式会社 Unité d'atomisation et son procédé de fabrication, et dispositif d'inhalation

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JP2023126894A (ja) 2023-09-12
TW202042678A (zh) 2020-12-01
EP3970537A4 (fr) 2023-01-04
EP3970537A1 (fr) 2022-03-23
WO2020234916A1 (fr) 2020-11-26
CN113840546A (zh) 2021-12-24
JPWO2020234916A1 (fr) 2020-11-26

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