EP3957199A1 - Heated tobacco product - Google Patents
Heated tobacco product Download PDFInfo
- Publication number
- EP3957199A1 EP3957199A1 EP19925253.7A EP19925253A EP3957199A1 EP 3957199 A1 EP3957199 A1 EP 3957199A1 EP 19925253 A EP19925253 A EP 19925253A EP 3957199 A1 EP3957199 A1 EP 3957199A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tobacco
- heater
- tobacco rod
- insertion cavity
- heated
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
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Classifications
-
- 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
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
- A24B15/10—Chemical features of tobacco products or tobacco substitutes
- A24B15/16—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes
-
- 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
- A24D1/02—Cigars; Cigarettes with special covers
-
- 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
- A24D1/04—Cigars; Cigarettes with mouthpieces or filter-tips
-
- 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
- A24D1/04—Cigars; Cigarettes with mouthpieces or filter-tips
- A24D1/042—Cigars; Cigarettes with mouthpieces or filter-tips with mouthpieces
-
- 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
- A24D1/04—Cigars; Cigarettes with mouthpieces or filter-tips
- A24D1/045—Cigars; Cigarettes with mouthpieces or filter-tips with smoke filter means
-
- 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
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/02—Manufacture of tobacco smoke filters
- A24D3/0275—Manufacture of tobacco smoke filters for filters with special features
- A24D3/0279—Manufacture of tobacco smoke filters for filters with special features with tubes
-
- 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
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/04—Tobacco smoke filters characterised by their shape or structure
-
- 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
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/062—Use of materials for tobacco smoke filters characterised by structural features
-
- 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
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
- A24D3/10—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent of cellulose or cellulose derivatives
-
- 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
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/17—Filters 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
- A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
- A24F40/46—Shape or structure of electric heating means
Definitions
- the present invention relates to a heated tobacco product.
- Known heated tobacco products have a tobacco rod formed by filling the space inside wrapping paper with a tobacco filler, the tobacco filler including a tobacco raw material (e.g., tobacco shreds, tobacco granules, or a shaped tobacco sheet material) and an aerosol-source material (such as glycerin or propylene glycol) (see, for example, Patent Document 1).
- a tobacco raw material e.g., tobacco shreds, tobacco granules, or a shaped tobacco sheet material
- an aerosol-source material such as glycerin or propylene glycol
- the electric heater experiences a large resistance during its insertion into the tobacco rod from the distal end face of the tobacco rod. This may result in situations where, during insertion of the electric heater into the tobacco rod (tobacco filler), the electric heater experiences damage such as fracture or bending, the tobacco filler constituting the tobacco rod is pushed toward the mouth end, or the tobacco rod deforms by buckling.
- the present invention has been made in view of the above-mentioned circumstances. Accordingly, it is an object of the present invention to provide a technique for use in a heated tobacco product having a tobacco rod formed by filling the space inside wrapping paper with a tobacco filler including a tobacco raw material and an aerosol-source material, the technique being designed to prevent or inhibit, during insertion of an electric heater into the tobacco rod, damage to the electric heater such as fracture or bending, pushing of the tobacco filler constituting the tobacco rod toward the mouth end, or buckling deformation of the tobacco rod.
- a heated tobacco product having a tobacco rod formed by filling a space inside wrapping paper with a tobacco filler that includes a tobacco raw material and an aerosol-source material.
- the heated tobacco product includes a heater-insertion cavity that receives a heater inserted into the heater-insertion cavity.
- the heater is a heater of a heating device.
- the heater-insertion cavity is open near a distal end face of the tobacco rod and extends in an axial direction of the tobacco rod.
- the heater-insertion cavity may have a cross-sectional area orthogonal to the axial direction of the tobacco rod that is smaller than a cross-sectional area at corresponding opposed locations of the heater inserted into the tobacco rod to a specified depth.
- the heater-insertion cavity may have a cross-sectional area orthogonal to the axial direction of the tobacco rod that is set within a range of greater than or equal to 70% and less than or equal to 99% of a cross-sectional area at corresponding opposed locations of the heater inserted into the tobacco rod to a specified depth.
- the heater-insertion cavity may have a shape of a circular cylinder with a diameter of greater than or equal to 1 mm and less than or equal to 4 mm.
- the heater-insertion cavity may have a shape of a circular cone that tapers down in the axial direction of the tobacco rod, the heater-insertion cavity may have a diameter of greater than or equal to 1 mm and less than or equal to 4 mm at a first end located near the distal end face of the tobacco rod, and the heater-insertion cavity may have a diameter of greater than 0 mm and less than or equal to 0.5 mm at a second end located opposite to the distal end face.
- the heater-insertion cavity may have a shape of a circular cone frustum that tapers down in the axial direction of the tobacco rod, the heater-insertion cavity may have a diameter of greater than or equal to 1 mm and less than or equal to 4 mm at a first end located near the distal end face of the tobacco rod, and the heater-insertion cavity may have a diameter of greater than or equal to 0.5 mm and less than or equal to 3.5 mm at a second end located opposite to the distal end face.
- the heated tobacco product may have a filter coaxially coupled to a portion of the tobacco rod located near a proximal end of the tobacco rod, and the filter may include a cooling part to cool a volatile substance released from the aerosol-source material included in the tobacco filler.
- the filter may include a support part.
- the support part is disposed at a connection end of the filter to prevent or inhibit the tobacco filler from being pushed toward a mouth end of the filter upon insertion of the heater into the heater-insertion cavity.
- the connection end is an end connected to a portion of the tobacco rod located near the proximal end of the tobacco rod.
- the filter may include a mouthpiece part disposed near the mouth end of the filter.
- the heater-insertion cavity may be formed as a through-hole that penetrates the tobacco rod, or may be formed as a recess that does not penetrate the tobacco rod.
- the present invention can provide a technique for use in a heated tobacco product having a tobacco rod formed by filling the space inside wrapping paper with a tobacco filler including a tobacco raw material and an aerosol-source material, the technique being designed to prevent or inhibit, during insertion of an electric heater into the tobacco rod, damage to the electric heater such as fracture or bending, pushing of the tobacco filler constituting the tobacco rod toward the mouth end, or buckling deformation of the tobacco rod.
- Fig. 1 schematically illustrates the internal structure of a heated tobacco product 1 according to Embodiment 1.
- the heated tobacco product 1 is a type of tobacco product designed to heat a tobacco filler without combustion, and deliver an aerosol generated by the tobacco filler to the user of the heated tobacco product 1.
- the heated tobacco product 1 includes a tobacco rod 2 and a filter 3, which are arranged in coaxial alignment with each other.
- the heated tobacco product 1 has a mouth end 1a that the user inserts into the user's mouth during use of the heated tobacco product 1, and a distal end 1b located at an end opposite to the mouth end 1a.
- the filter 3 has a support part 4, a cooling part 5, and a mouthpiece part 6, which are in coaxial alignment with each other and disposed in the stated order as viewed from the distal end of the filter 3.
- the support part 4, the cooling part 5, and the mouthpiece part 6 of the filter 3 are integrally wrapped by a filter wrap 7. Further, the tobacco rod 2 and the filter 3 are integrally coupled to each other by being wrapped by tipping paper 8.
- the distal end 1b of the heated tobacco product 1 can be regarded as the distal end or upstream end of the tobacco rod 2, and the mouth end 1a of the heated tobacco product 1 can be regarded as the rear end or downstream end of the mouthpiece part 6.
- the tobacco rod 2 is disposed at the distal end 1b of the heated tobacco product 1.
- the tobacco rod 2 is a rod-shaped component formed by wrapping a tobacco filler 21, which includes a tobacco raw material and an aerosol-source material, with wrapping paper 22 such that the wrapping paper 22 covers the lateral face of the tobacco filler 21.
- the tobacco raw material included in the tobacco filler 21 may include one or more kinds of the following materials: tobacco shreds; tobacco granules; and a reconstituted tobacco material.
- the tobacco filler 21 is a reconstituted tobacco material.
- the reconstituted tobacco material may be in the form of a reconstituted tobacco sheet shredded into small pieces or pulverized into a granular or powder form, or may be such a reconstituted tobacco sheet folded up without being shredded.
- the reconstituted tobacco sheet is formed by, for example, adding a binder, a gelling agent, a crosslinking agent, a flavor, a viscosity modifier, or other additives to homogenized tobacco, followed by kneading the resulting mixture into a sheet form by a suitable method.
- the homogenized tobacco is a tobacco material obtained by pulverizing or grinding leaf tobacco, dried tobacco leaves, shredded tobacco, expanded tobacco, reconstituted tobacco, and other tobacco materials, and then mixing the resulting tobacco materials together.
- the reconstituted tobacco sheet may be a reconstituted tobacco sheet formed by a suitable method, for example, a slurry method, a paper-making method, or a rolling method, such as a reconstituted-tobacco slurry sheet (reconstituted-tobacco cast sheet), a reconstituted tobacco sheet obtained by a paper-making process, or a reconstituted-tobacco rolled sheet.
- a suitable method for example, a slurry method, a paper-making method, or a rolling method, such as a reconstituted-tobacco slurry sheet (reconstituted-tobacco cast sheet), a reconstituted tobacco sheet obtained by a paper-making process, or a reconstituted-tobacco rolled sheet.
- the reconstituted tobacco slurry sheet is a reconstituted tobacco slurry sheet manufactured by drying and dehydrating a reconstituted tobacco slurry spread on a flat plate.
- the reconstituted tobacco sheet obtained by a paper-making process is a reconstituted tobacco sheet manufactured by a paper-making process by blending a reconstituted tobacco slurry with pulp (cellulose fibers).
- the rolled reconstituted tobacco sheet is a reconstituted tobacco sheet manufactured by rolling a reconstituted tobacco slurry with a roller or other device into a sheet form, and then drying the resulting slurry.
- the aerosol-source material included in the tobacco filler 21 is a substance that releases volatile substances upon volatilization that, when cooled, form an aerosol.
- the aerosol-source material is not limited to any particular kind of aerosol-source material, but any suitable substance extracted from various natural products can be selected in accordance with the intended use. Suitable examples of aerosol-source materials may include glycerin, propylene glycol, triacetin, 1, 3-butanediol, and a mixture thereof.
- the tobacco filler 21 may include a flavor. The kind of the flavor is not particularly limited.
- the support part 4 is a segment located near the front end of the filter 3.
- the support part 4 is located immediately downstream of the tobacco rod 2, and disposed in abutting contact with the rear end of the tobacco rod 2.
- the support part 4 may be in the form of, for example, a hollow cellulose acetate tube.
- the support part 4 may be obtained by forming a center hole at the center of the cross-section of a cylindrical cellulose acetate fiber bundle such that the center hole penetrates the fiber bundle.
- the support part 4 may be in the form of, for example, a paper filter filled with cellulose fibers, or a paper tube. Any paper tube with a certain thickness can be effectively used to serve as the support part 4.
- the support part 4 is a segment provided to ensure that, when an electric heater of a heating device for which the heated tobacco product 1 is to be used is inserted into the tobacco rod 2, the support part 4 prevents the tobacco filler 21 from being pushed downstream within the heated tobacco product 1 toward the cooling part 5.
- the support part 4 also serves as a spacer for spacing the cooling part 5 of the heated tobacco product 1 away from the tobacco rod 2.
- the cooling part 5 is located immediately downstream of the support part 4, and disposed in abutting contact with the rear end of the support part 4.
- volatile substances released from the tobacco rod 2 (tobacco filler 21) flow downstream along the cooling part 5.
- the volatile substances released from the tobacco rod 2 (tobacco filler 21) are cooled by the cooling part 5, the volatile substances form an aerosol that is to be inhaled by the user.
- the cooling part 5 is formed by a hollow paper tube with an air vent 5a through which outside air can be introduced.
- the cooling part 5 may not include the air vent 5a.
- the cooling part 5 may have a heat-absorbing agent positioned not to obstruct the flow of volatile substances or aerosol.
- the cooling part 5 may be formed by a filter material having a large number of channels (through-holes) extending in the longitudinal direction (axial direction) of the filter 3.
- the mouthpiece part 6 is a segment located near the rear end of the filter 3, that is, near the mouth end 1a.
- the mouthpiece part 6 may be located immediately downstream of the cooling part 5, and disposed in abutting contact with the rear end of the cooling part 5.
- the mouthpiece part 6 may include, for example, a filter material made of cellulose acetate fibers formed into the shape of a circular cylinder.
- the mouthpiece part 6 may be a center hole filter, or a paper filter filled with cellulose fibers, or may be a paper tube including no filtering medium.
- the mouthpiece part 6 may be formed by any one of the following components: a solid filter material having a filtering medium; a center hole filter; a paper filter; and a paper tube including no filtering medium. Alternatively, the mouthpiece part 6 may be formed by selectively combining these components.
- Fig. 2 illustrates the tobacco rod 2 of the heated tobacco product 1 in detail.
- a distal end face 2a of the tobacco rod 2 (tobacco filler 21) has a heater-insertion cavity 23 into which the heater of the heating device is to be inserted.
- the heater-insertion cavity 23 is in the form of a non-through recess (cavity) extending in the axial direction of the tobacco rod 2 (tobacco filler 21).
- the heater-insertion cavity 23 may be in the form of a cavity that axially penetrates the tobacco rod 2 (tobacco filler 21).
- the heater-insertion cavity 23 may have the shape of a tapered circular cone frustum that progressively decreases in diameter from the distal end face 2a toward the rear end.
- the heater-insertion cavity 23 is not limited to any particular shape.
- the heater-insertion cavity 23 may have a shape other than a circular cone or a circular cone frustum, for example, a circular cylinder.
- Reference sign CL1 in Fig. 2 represents the central axis of the tobacco rod 2.
- the heater-insertion cavity 23 may be coaxial with the central axis CL1 of the tobacco rod 2.
- the heater-insertion cavity 23 of the tobacco rod 2 (tobacco filler 21) preferably has a diameter of greater than or equal to 1 mm and less than or equal to 4 mm at a first end 23a, which is located near the distal end face 2a of the tobacco rod 2, and has a diameter of greater than 0 mm and less than or equal to 0.5 mm at a second end 23b, which is located opposite to the distal end face 2a.
- the heater-insertion cavity 23 preferably has a diameter at the first end 23a located near the distal end face 2a of the tobacco rod 2 that is greater than or equal to 10% and less than or equal to 80% of the diameter of the tobacco rod 2, and has a diameter at the second end 23b that is greater than 0% and less than or equal to 10% of the diameter of the tobacco rod 2.
- Fig. 3 is a schematic diagram of a heating device 100 for which the heated tobacco product 1 according to Embodiment 1 is to be used.
- the heating device 100 has a housing 102 to accommodate various components.
- An electric heater 103, a controller (control unit) 104, a power supply 105, and other components are accommodated within the housing 102.
- the housing 102 has an accommodating cavity 107 including an opening 106 through which to insert the tobacco rod 2 of the heated tobacco product 1.
- the accommodating cavity 107 is a cavity having a cylindrical shape and capable of accommodating the tobacco rod 2.
- the electric heater 103 is disposed within the accommodating cavity 107.
- the electric heater 103 has the shape of a circular cone.
- the electric heater 103 is disposed such that the electric heater 103 protrudes perpendicularly toward the opening 106 from the central part of a bottom portion 107a of the accommodating cavity 107.
- the electric heater 103 gradually tapers down from a proximal end portion 103a toward a distal end portion 103b.
- the central axis of the electric heater 103 is coaxial with the central axis of the accommodating cavity 107.
- the electric heater 103 is not limited to any particular type of electric heater. Suitable examples may include an electric heater with heating wires (e.g., nichrome, iron-chrome, or iron-nickel heating wires) disposed all around a steel material, or a ceramic heater.
- the heated tobacco product 1 configured as described above includes the heater-insertion cavity 23 provided in the tobacco rod 2 (tobacco filler 21). Accordingly, in attaching the tobacco rod 2 into the accommodating cavity 107 of the heating device 100, the electric heater 103 is inserted into the heater-insertion cavity 23 of the tobacco rod 2 (tobacco filler 21). As a result, the resistance encountered during the insertion of the electric heater 103 into the tobacco filler 21 can be reduced. This configuration helps to improve the usability in attaching the tobacco rod 2 to the heating device 100 (in inserting the electric heater 103 into the tobacco rod 2).
- the above-mentioned configuration also helps to, in inserting the electric heater 103 into the tobacco rod 2, prevent or inhibit damage to the electric heater 103 such as fracture or bending, or buckling deformation of the tobacco rod 2. Further, the above-mentioned configuration helps to, in attaching the tobacco rod 2 into the accommodating cavity 107 of the heating device 100, prevent or inhibit the tobacco filler 21 of the tobacco rod 2 from being pushed toward the mouth end.
- the heater-insertion cavity 23 of the tobacco rod 2 (tobacco filler 21) has the shape of a circular cone. This suitably ensures tight contact between the tobacco filler 21, which laterally surrounds the heater-insertion cavity 23, and the electric heater 103 upon insertion of the electric heater 103 into the heater-insertion cavity 23. This leads to improved heat conduction from the electric heater 103 to the tobacco filler 21. Further, the above-mentioned configuration also ensures that, in withdrawing the tobacco rod 2 of the heated tobacco product 1 from the accommodating cavity 107 of the heating device 100 after use of the heated tobacco product 1, the friction between the electric heater 103 and the tobacco filler 21 is small, and thus the tobacco filler 21 is less likely to drop off. Furthermore, the above-mentioned configuration also helps to reduce the chances of seizing of the tobacco filler 21 during use. This results in reduced chances of the tobacco filler 21 dropping off as the tobacco rod 2 is withdrawn from the accommodating cavity 107 of the heating device 100 after use.
- the heater-insertion cavity 23 of the tobacco rod 2 (tobacco filler 21) according to Embodiment 1 may have a cross-sectional area orthogonal to the central axis CL1 of the tobacco rod 2 that is smaller than the cross-sectional area at corresponding opposed locations of the electric heater 103 inserted into the tobacco rod 2 to a specified depth.
- Fig. 4 illustrates the electric heater 103 inserted into the tobacco rod 2 to a specified depth as the tobacco rod 2 is attached into the accommodating cavity 107 of the heating device 100.
- the heater-insertion cavity 23 has a diameter (cross-sectional area) that is set within a range of greater than or equal to 70% and less than or equal to 99% of the diameter (cross-sectional area) at corresponding opposed locations of the electric heater 103 inserted into the tobacco rod 2 to a specified depth.
- corresponding opposed locations refers to locations where, with the electric heater 103 inserted into the tobacco rod 2 to a specified depth, the electric heater 103 and the heater-insertion cavity 23 are opposed to each other.
- the heater-insertion cavity 23 of the tobacco rod 2 (tobacco filler 21) according to Embodiment 1 has a cross-sectional area smaller than the cross-sectional area at corresponding locations of the electric heater 103 of the heating device 100 for which the heated tobacco product 1 is to be used.
- the electric heater 103 forces the heater-insertion cavity 23 to spread apart as the electric heater 103 is inserted into the heater-insertion cavity 23. This further ensures tight contact between the tobacco filler 21, which laterally surrounds the heater-insertion cavity 23, and the electric heater 103, leading to improved heat conduction from the electric heater 103 to the tobacco filler 21.
- Fig. 5 illustrates the tobacco rod 2 (tobacco filler 21) according to a first modification.
- the tobacco rod 2 according to the first modification has a heater-insertion cavity 23A in the shape of a circular cylinder with a diameter that is constant along the central axis CL1 of the tobacco rod 2.
- Fig. 6 illustrates the tobacco rod 2 according to the first modification when attached into the accommodating cavity 107 of the heating device 100.
- Fig. 6 depicts an electric heater 103A inserted into the tobacco rod 2 to a specified depth.
- the electric heater 103A according to the first modification has the shape of a circular cylinder.
- the diameter of the heater-insertion cavity 23A may be set to a small value relative to the diameter (cross-sectional area) of the electric heater 103A.
- the electric heater 103A forces the heater-insertion cavity 23A to spread apart as the electric heater 103A is inserted into the heater-insertion cavity 23A. This allows for tight contact between the tobacco filler 21, which laterally surrounds the heater-insertion cavity 23A, and the electric heater 103A. This results in improved efficiency of heat conduction from the electric heater 103A to the tobacco filler 21.
- the diameter (cross-sectional area) of the heater-insertion cavity 23A according to the first modification is set within a range of greater than or equal to 70% and less than or equal to 99% of the diameter (cross-sectional area) of the electric heater 103A. This makes it possible to meet the above-mentioned requirements regarding both the resistance encountered during insertion of the electric heater 103A, and the proper contact after the insertion. This results in both improved usability in attaching the tobacco rod 2 to the heating device 100 (in inserting the electric heater 103A into the tobacco rod 2), and improved heating efficiency in heating the tobacco filler 21 with the electric heater 103A.
- the heater-insertion cavity 23A has the shape of a circular cylinder with a constant diameter as described above. This helps to ensure that, during heating with the heater, the tobacco filler 21 around the heater-insertion cavity 23A can be sufficiently heated even at a location near the second end 23b. This makes it possible to, during heating with the heater, prevent or inhibit creation of a temperature distribution within the tobacco filler 21 along the central axis CL1. This leads to increased aerosol delivery or improved stability of delivery.
- the heater-insertion cavity 23A according to the first modification is preferably formed in the shape of a circular cylinder with a diameter of greater than or equal to 1 mm and less than or equal to 4 mm.
- the heater-insertion cavity 23A preferably has a diameter that is greater than or equal to 10% and less than or equal to 80% of the diameter of the tobacco rod 2. For example, if the tobacco rod 2 has a diameter of 7 mm, the heater-insertion cavity 23A preferably has a diameter of about 2.5 mm.
- Fig. 7 illustrates the tobacco rod 2 (tobacco filler 21) according to a second modification.
- the tobacco rod 2 according to the second modification has a heater-insertion cavity 23B in the shape of a circular cone frustum (circular truncated cone) that tapers down along the central axis CL1 of the tobacco rod 2.
- Fig. 8 illustrates the tobacco rod 2 according to the second modification when attached into the accommodating cavity 107 of the heating device 100.
- Fig. 8 depicts an electric heater 103B inserted into the tobacco rod 2 to a specified depth.
- the electric heater 103B according to the second modification has the shape of a circular cone frustum (circular truncated cone).
- the diameter of the heater-insertion cavity 23B may be set to a value smaller than the diameter (cross-sectional area) at corresponding opposed locations of the electric heater 103B inserted into the tobacco rod 2 to a specified depth.
- the electric heater 103B forces the heater-insertion cavity 23B to spread apart as the electric heater 103B is inserted into the heater-insertion cavity 23B. This allows for tight contact between the tobacco filler 21, which laterally surrounds the heater-insertion cavity 23B, and the electric heater 103B. This results in improved efficiency of heat conduction from the electric heater 103B to the tobacco filler 21.
- the heater-insertion cavity 23B according to the second modification has a diameter (cross-sectional area) that is set within a range of greater than or equal to 70% and less than or equal to 99% of the diameter (cross-sectional area) at corresponding opposed locations of the electric heater 103B inserted into the tobacco rod 2 to a specified depth.
- the heater-insertion cavity 23B according to the second modification is designed to have the shape of a circular cone frustum (circular truncated cone). This makes it possible to achieve both the advantage of using the heater-insertion cavity 23 designed to have the shape of a circular cone, and the advantage of using the heater-insertion cavity 23 designed to have the shape of a circular cylinder.
- the heater-insertion cavity 23B according to the second modification tends to have a diameter at the second end 23b near the mouth end that is greater than the diameter of the corresponding portion of the heater-insertion cavity 23 designed to have the shape of a circular cone. This helps to ensure that during heating with the heater, a temperature distribution is less likely to occur within the tobacco filler 21 along the central axis CL1. Further, the heater-insertion cavity 23B according to the second modification has a diameter (cross-sectional area) that tapers down along the central axis CL1 of the tobacco rod 2. This makes it possible to reduce the resistance encountered during insertion of the electric heater 103B into the tobacco rod 2 and, at the same time, ensure improved contact after the insertion.
- the heater-insertion cavity 23B preferably has a diameter of greater than or equal to 1 mm and less than or equal to 4 mm at the first end 23a, which is located near the distal end face 2a of the tobacco rod 2, and a diameter of greater than or equal to 0.5 mm and less than or equal to 3.5 mm at the second end 23b, which is located opposite to the distal end face 2a.
- the heater-insertion cavity 23B preferably has a diameter at the first end 23a located near the distal end face 2a of the tobacco rod 2 that is greater than or equal to 10% and less than or equal to 80% of the diameter of the tobacco rod 2, and has a diameter at the second end 23b that is greater than or equal to 5% and less than or equal to 70% of the diameter of the tobacco rod 2.
- the heater-insertion cavity 23, 23A, or 23B of the tobacco rod 2 (tobacco filler 21) according to Embodiment 1 may not necessarily have the shape of a circular cone, a circular cylinder, or a circular cone frustum as described above but may have various other shapes.
- the number of heater-insertion cavities 23, 23A, or 23B to be provided in the tobacco rod 2 (tobacco filler 21) is not particularly limited.
- the tobacco rod 2 (tobacco filler 21) may have a plurality of heater-insertion cavities 23, 23A, or 23B.
- Fig. 9A illustrates a heater-insertion cavity 23C according to a third modification.
- the heater-insertion cavity 23C according to the third modification is identical to the heater-insertion cavity 23 illustrated in Fig. 2 , except that the heater-insertion cavity 23C has the shape of a circular cone formed as a through-hole that penetrates the tobacco rod 2.
- Fig. 9B illustrates a heater-insertion cavity 23D according to a fourth modification.
- the heater-insertion cavity 23D according to the fourth modification is identical to the heater-insertion cavity 23A illustrated in Fig. 5 , except that the heater-insertion cavity 23D has the shape of a circular cylinder formed as a through-hole that penetrates the tobacco rod 2.
- Fig. 9C illustrates a heater-insertion cavity 23E according to a fifth modification.
- the heater-insertion cavity 23E according to the fifth modification is identical to the heater-insertion cavity 23B illustrated in Fig. 7 , except that the heater-insertion cavity 23E has the shape of a circular cone frustum formed as a through-hole that penetrates the tobacco rod 2.
- the tobacco rod 2 may preferably be connected integrally to the filter 3 by means of a filter-tip attachment device after the heater-insertion cavity 23C, 23D, or 23E is formed in the tobacco rod 2.
- Forming the heater-insertion cavity 23C, 23D, or 23E as a through-hole penetrating the tobacco rod 2 as illustrated in Figs. 9A to 9C ensures that no tobacco filler 21 exists downstream of the distal end of the electric heater 103, which in turn ensures that no decrease in thermal conductivity occurs during heating with the heater. This helps to prevent or inhibit an aerosol generated during heating with the heater from being cooled to condense by a portion of the tobacco filler 21 located near the distal end of the electric heater 103. This results in increased aerosol delivery during use.
- forming the heater-insertion cavity 23, 23A, or 23B as a non-through hole that does not penetrate the tobacco rod 2 as illustrated in Figs. 2 , 5 , and 7 ensures that, for example, in forming the heater-insertion cavity 23, 23A, or 23B by use of a needle inserted through the distal end face 2a of the tobacco rod 2, the tobacco filler 21 of the tobacco rod 2 is not pushed out by the needle toward the mouth end.
- This allows the heater-insertion cavity 23, 23A, or 23B to be bored after the filter 3 is coupled to the tobacco rod 2 by means of the filter-tip attachment device. This leads to improved manufacturability.
- the heated tobacco product according to the present invention is not limited to the embodiments described above.
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Manufacture Of Tobacco Products (AREA)
Abstract
Description
- The present invention relates to a heated tobacco product.
- Known heated tobacco products have a tobacco rod formed by filling the space inside wrapping paper with a tobacco filler, the tobacco filler including a tobacco raw material (e.g., tobacco shreds, tobacco granules, or a shaped tobacco sheet material) and an aerosol-source material (such as glycerin or propylene glycol) (see, for example, Patent Document 1). With heated tobacco products of this type, the tobacco filler is heated rather than combusted by use of an electric heater of a heating device, and an aerosol generated by the tobacco filler is delivered to the user of the heated tobacco product. As such an electric heater, heaters of various shapes such as a blade shape or a rod shape have been commercialized. In use, the electric heater is inserted into the tobacco rod from the distal end face of the tobacco rod to thereby attach the tobacco rod to the heating device.
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- Patent Document 1:
Japanese Patent No. 5920744 - Patent Document 2:
Japanese Patent No. 5348648 - For conventional heated tobacco products, the electric heater experiences a large resistance during its insertion into the tobacco rod from the distal end face of the tobacco rod. This may result in situations where, during insertion of the electric heater into the tobacco rod (tobacco filler), the electric heater experiences damage such as fracture or bending, the tobacco filler constituting the tobacco rod is pushed toward the mouth end, or the tobacco rod deforms by buckling.
- The present invention has been made in view of the above-mentioned circumstances. Accordingly, it is an object of the present invention to provide a technique for use in a heated tobacco product having a tobacco rod formed by filling the space inside wrapping paper with a tobacco filler including a tobacco raw material and an aerosol-source material, the technique being designed to prevent or inhibit, during insertion of an electric heater into the tobacco rod, damage to the electric heater such as fracture or bending, pushing of the tobacco filler constituting the tobacco rod toward the mouth end, or buckling deformation of the tobacco rod.
- To address the above-mentioned problem, according to the present invention, there is provided a heated tobacco product having a tobacco rod formed by filling a space inside wrapping paper with a tobacco filler that includes a tobacco raw material and an aerosol-source material. The heated tobacco product includes a heater-insertion cavity that receives a heater inserted into the heater-insertion cavity. The heater is a heater of a heating device. The heater-insertion cavity is open near a distal end face of the tobacco rod and extends in an axial direction of the tobacco rod.
- In another example, the heater-insertion cavity may have a cross-sectional area orthogonal to the axial direction of the tobacco rod that is smaller than a cross-sectional area at corresponding opposed locations of the heater inserted into the tobacco rod to a specified depth.
- In another example, the heater-insertion cavity may have a cross-sectional area orthogonal to the axial direction of the tobacco rod that is set within a range of greater than or equal to 70% and less than or equal to 99% of a cross-sectional area at corresponding opposed locations of the heater inserted into the tobacco rod to a specified depth.
- In another example, the heater-insertion cavity may have a shape of a circular cylinder with a diameter of greater than or equal to 1 mm and less than or equal to 4 mm.
- In another example, the heater-insertion cavity may have a shape of a circular cone that tapers down in the axial direction of the tobacco rod, the heater-insertion cavity may have a diameter of greater than or equal to 1 mm and less than or equal to 4 mm at a first end located near the distal end face of the tobacco rod, and the heater-insertion cavity may have a diameter of greater than 0 mm and less than or equal to 0.5 mm at a second end located opposite to the distal end face.
- In another example, the heater-insertion cavity may have a shape of a circular cone frustum that tapers down in the axial direction of the tobacco rod, the heater-insertion cavity may have a diameter of greater than or equal to 1 mm and less than or equal to 4 mm at a first end located near the distal end face of the tobacco rod, and the heater-insertion cavity may have a diameter of greater than or equal to 0.5 mm and less than or equal to 3.5 mm at a second end located opposite to the distal end face.
- In another example, the heated tobacco product may have a filter coaxially coupled to a portion of the tobacco rod located near a proximal end of the tobacco rod, and the filter may include a cooling part to cool a volatile substance released from the aerosol-source material included in the tobacco filler.
- In another example of the heated tobacco product according to the present invention, the filter may include a support part. The support part is disposed at a connection end of the filter to prevent or inhibit the tobacco filler from being pushed toward a mouth end of the filter upon insertion of the heater into the heater-insertion cavity. The connection end is an end connected to a portion of the tobacco rod located near the proximal end of the tobacco rod.
- In another example of the heated tobacco product according to the present invention, the filter may include a mouthpiece part disposed near the mouth end of the filter.
- In another example, the heater-insertion cavity may be formed as a through-hole that penetrates the tobacco rod, or may be formed as a recess that does not penetrate the tobacco rod.
- Various means for addressing problems according to the present invention can be used in combination as much as possible.
- The present invention can provide a technique for use in a heated tobacco product having a tobacco rod formed by filling the space inside wrapping paper with a tobacco filler including a tobacco raw material and an aerosol-source material, the technique being designed to prevent or inhibit, during insertion of an electric heater into the tobacco rod, damage to the electric heater such as fracture or bending, pushing of the tobacco filler constituting the tobacco rod toward the mouth end, or buckling deformation of the tobacco rod.
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Fig. 1] Fig. 1 schematically illustrates the internal structure of a heated tobacco product according toEmbodiment 1. - [
Fig. 2] Fig. 2 illustrates a tobacco rod of a heated tobacco product in detail. - [
Fig. 3] Fig. 3 is a schematic diagram of a heating device for which a heated tobacco product is to be used. - [
Fig. 4] Fig. 4 illustrates an electric heater inserted into a tobacco rod to a specified depth as the tobacco rod is attached into an accommodating cavity of a heating device. - [
Fig. 5] Fig. 5 illustrates a tobacco rod according to a first modification. - [
Fig. 6] Fig. 6 illustrates the tobacco rod according to the first modification when attached into an accommodating cavity of a heating device. - [
Fig. 7] Fig. 7 illustrates a tobacco rod according to a second modification. - [
Fig. 8] Fig. 8 illustrates the tobacco rod according to the second modification when attached into an accommodating cavity of a heating device. - [
Fig. 9A] Fig. 9A illustrates a heater-insertion cavity according to a third modification. - [
Fig. 9B] Fig. 9B illustrates a heater-insertion cavity according to a fourth modification. - [
Fig. 9C] Fig. 9C illustrates a heater-insertion cavity according to a fifth modification. - A heated tobacco product according to embodiments of the present invention is described below with reference to the drawings. The dimensions, materials, shapes, relative arrangement, and other features of components described below in connection with the embodiments are, unless expressly stated otherwise, not intended to limit the technical scope of the present invention to the particular features described.
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Fig. 1 schematically illustrates the internal structure of a heatedtobacco product 1 according toEmbodiment 1. The heatedtobacco product 1 is a type of tobacco product designed to heat a tobacco filler without combustion, and deliver an aerosol generated by the tobacco filler to the user of the heatedtobacco product 1. - The heated
tobacco product 1 includes atobacco rod 2 and afilter 3, which are arranged in coaxial alignment with each other. The heatedtobacco product 1 has amouth end 1a that the user inserts into the user's mouth during use of the heatedtobacco product 1, and adistal end 1b located at an end opposite to themouth end 1a. Thefilter 3 has asupport part 4, acooling part 5, and amouthpiece part 6, which are in coaxial alignment with each other and disposed in the stated order as viewed from the distal end of thefilter 3. Thesupport part 4, thecooling part 5, and themouthpiece part 6 of thefilter 3 are integrally wrapped by afilter wrap 7. Further, thetobacco rod 2 and thefilter 3 are integrally coupled to each other by being wrapped by tippingpaper 8. - During use of the heated
tobacco product 1, air is drawn in by the user from thedistal end 1b to themouth end 1a through the heatedtobacco product 1. Thedistal end 1b of the heatedtobacco product 1 can be regarded as the distal end or upstream end of thetobacco rod 2, and themouth end 1a of the heatedtobacco product 1 can be regarded as the rear end or downstream end of themouthpiece part 6. - The
tobacco rod 2 is disposed at thedistal end 1b of theheated tobacco product 1. Thetobacco rod 2 is a rod-shaped component formed by wrapping atobacco filler 21, which includes a tobacco raw material and an aerosol-source material, with wrappingpaper 22 such that the wrappingpaper 22 covers the lateral face of thetobacco filler 21. InEmbodiment 1, the tobacco raw material included in thetobacco filler 21 may include one or more kinds of the following materials: tobacco shreds; tobacco granules; and a reconstituted tobacco material. InEmbodiment 1, thetobacco filler 21 is a reconstituted tobacco material. For example, the reconstituted tobacco material may be in the form of a reconstituted tobacco sheet shredded into small pieces or pulverized into a granular or powder form, or may be such a reconstituted tobacco sheet folded up without being shredded. The reconstituted tobacco sheet is formed by, for example, adding a binder, a gelling agent, a crosslinking agent, a flavor, a viscosity modifier, or other additives to homogenized tobacco, followed by kneading the resulting mixture into a sheet form by a suitable method. The homogenized tobacco is a tobacco material obtained by pulverizing or grinding leaf tobacco, dried tobacco leaves, shredded tobacco, expanded tobacco, reconstituted tobacco, and other tobacco materials, and then mixing the resulting tobacco materials together. The reconstituted tobacco sheet may be a reconstituted tobacco sheet formed by a suitable method, for example, a slurry method, a paper-making method, or a rolling method, such as a reconstituted-tobacco slurry sheet (reconstituted-tobacco cast sheet), a reconstituted tobacco sheet obtained by a paper-making process, or a reconstituted-tobacco rolled sheet. For example, the reconstituted tobacco slurry sheet is a reconstituted tobacco slurry sheet manufactured by drying and dehydrating a reconstituted tobacco slurry spread on a flat plate. The reconstituted tobacco sheet obtained by a paper-making process is a reconstituted tobacco sheet manufactured by a paper-making process by blending a reconstituted tobacco slurry with pulp (cellulose fibers). The rolled reconstituted tobacco sheet is a reconstituted tobacco sheet manufactured by rolling a reconstituted tobacco slurry with a roller or other device into a sheet form, and then drying the resulting slurry. - The aerosol-source material included in the
tobacco filler 21 is a substance that releases volatile substances upon volatilization that, when cooled, form an aerosol. The aerosol-source material is not limited to any particular kind of aerosol-source material, but any suitable substance extracted from various natural products can be selected in accordance with the intended use. Suitable examples of aerosol-source materials may include glycerin, propylene glycol, triacetin, 1, 3-butanediol, and a mixture thereof. Thetobacco filler 21 may include a flavor. The kind of the flavor is not particularly limited. - The
support part 4 is a segment located near the front end of thefilter 3. Thesupport part 4 is located immediately downstream of thetobacco rod 2, and disposed in abutting contact with the rear end of thetobacco rod 2. Thesupport part 4 may be in the form of, for example, a hollow cellulose acetate tube. In other words, thesupport part 4 may be obtained by forming a center hole at the center of the cross-section of a cylindrical cellulose acetate fiber bundle such that the center hole penetrates the fiber bundle. Alternatively, thesupport part 4 may be in the form of, for example, a paper filter filled with cellulose fibers, or a paper tube. Any paper tube with a certain thickness can be effectively used to serve as thesupport part 4. Thesupport part 4 is a segment provided to ensure that, when an electric heater of a heating device for which theheated tobacco product 1 is to be used is inserted into thetobacco rod 2, thesupport part 4 prevents thetobacco filler 21 from being pushed downstream within theheated tobacco product 1 toward the coolingpart 5. Thesupport part 4 also serves as a spacer for spacing thecooling part 5 of theheated tobacco product 1 away from thetobacco rod 2. - The cooling
part 5 is located immediately downstream of thesupport part 4, and disposed in abutting contact with the rear end of thesupport part 4. During use of theheated tobacco product 1, volatile substances released from the tobacco rod 2 (tobacco filler 21) flow downstream along the coolingpart 5. As the volatile substances released from the tobacco rod 2 (tobacco filler 21) are cooled by the coolingpart 5, the volatile substances form an aerosol that is to be inhaled by the user. In the example depicted inFig. 1 , the coolingpart 5 is formed by a hollow paper tube with anair vent 5a through which outside air can be introduced. However, the coolingpart 5 may not include theair vent 5a. The coolingpart 5 may have a heat-absorbing agent positioned not to obstruct the flow of volatile substances or aerosol. For example, the coolingpart 5 may be formed by a filter material having a large number of channels (through-holes) extending in the longitudinal direction (axial direction) of thefilter 3. - The
mouthpiece part 6 is a segment located near the rear end of thefilter 3, that is, near themouth end 1a. Themouthpiece part 6 may be located immediately downstream of thecooling part 5, and disposed in abutting contact with the rear end of thecooling part 5. In the example depicted inFig. 1 , themouthpiece part 6 may include, for example, a filter material made of cellulose acetate fibers formed into the shape of a circular cylinder. Themouthpiece part 6 may be a center hole filter, or a paper filter filled with cellulose fibers, or may be a paper tube including no filtering medium. Themouthpiece part 6 may be formed by any one of the following components: a solid filter material having a filtering medium; a center hole filter; a paper filter; and a paper tube including no filtering medium. Alternatively, themouthpiece part 6 may be formed by selectively combining these components. -
Fig. 2 illustrates thetobacco rod 2 of theheated tobacco product 1 in detail. As illustrated inFig. 2 , adistal end face 2a of the tobacco rod 2 (tobacco filler 21) has a heater-insertion cavity 23 into which the heater of the heating device is to be inserted. In the example depicted inFig. 2 , the heater-insertion cavity 23 is in the form of a non-through recess (cavity) extending in the axial direction of the tobacco rod 2 (tobacco filler 21). Alternatively, however, the heater-insertion cavity 23 may be in the form of a cavity that axially penetrates the tobacco rod 2 (tobacco filler 21). Although the heater-insertion cavity 23 is depicted inFig. 2 as having the shape of a tapered circular cone that progressively decreases in diameter from thedistal end face 2a of the tobacco rod 2 (tobacco filler 21) toward the rear end, the heater-insertion cavity 23 may have the shape of a tapered circular cone frustum that progressively decreases in diameter from thedistal end face 2a toward the rear end. The heater-insertion cavity 23 is not limited to any particular shape. The heater-insertion cavity 23 may have a shape other than a circular cone or a circular cone frustum, for example, a circular cylinder. Reference sign CL1 inFig. 2 represents the central axis of thetobacco rod 2. The heater-insertion cavity 23 may be coaxial with the central axis CL1 of thetobacco rod 2. - The heater-
insertion cavity 23 of the tobacco rod 2 (tobacco filler 21) preferably has a diameter of greater than or equal to 1 mm and less than or equal to 4 mm at afirst end 23a, which is located near thedistal end face 2a of thetobacco rod 2, and has a diameter of greater than 0 mm and less than or equal to 0.5 mm at asecond end 23b, which is located opposite to thedistal end face 2a. The heater-insertion cavity 23 preferably has a diameter at thefirst end 23a located near thedistal end face 2a of thetobacco rod 2 that is greater than or equal to 10% and less than or equal to 80% of the diameter of thetobacco rod 2, and has a diameter at thesecond end 23b that is greater than 0% and less than or equal to 10% of the diameter of thetobacco rod 2. -
Fig. 3 is a schematic diagram of aheating device 100 for which theheated tobacco product 1 according toEmbodiment 1 is to be used. Theheating device 100 has ahousing 102 to accommodate various components. Anelectric heater 103, a controller (control unit) 104, apower supply 105, and other components are accommodated within thehousing 102. Thehousing 102 has anaccommodating cavity 107 including anopening 106 through which to insert thetobacco rod 2 of theheated tobacco product 1. Theaccommodating cavity 107 is a cavity having a cylindrical shape and capable of accommodating thetobacco rod 2. - As illustrated in
Fig. 3 , theelectric heater 103 is disposed within theaccommodating cavity 107. Theelectric heater 103 has the shape of a circular cone. Theelectric heater 103 is disposed such that theelectric heater 103 protrudes perpendicularly toward the opening 106 from the central part of abottom portion 107a of theaccommodating cavity 107. Theelectric heater 103 gradually tapers down from aproximal end portion 103a toward adistal end portion 103b. The central axis of theelectric heater 103 is coaxial with the central axis of theaccommodating cavity 107. Theelectric heater 103 is not limited to any particular type of electric heater. Suitable examples may include an electric heater with heating wires (e.g., nichrome, iron-chrome, or iron-nickel heating wires) disposed all around a steel material, or a ceramic heater. - The
heated tobacco product 1 configured as described above includes the heater-insertion cavity 23 provided in the tobacco rod 2 (tobacco filler 21). Accordingly, in attaching thetobacco rod 2 into theaccommodating cavity 107 of theheating device 100, theelectric heater 103 is inserted into the heater-insertion cavity 23 of the tobacco rod 2 (tobacco filler 21). As a result, the resistance encountered during the insertion of theelectric heater 103 into thetobacco filler 21 can be reduced. This configuration helps to improve the usability in attaching thetobacco rod 2 to the heating device 100 (in inserting theelectric heater 103 into the tobacco rod 2). The above-mentioned configuration also helps to, in inserting theelectric heater 103 into thetobacco rod 2, prevent or inhibit damage to theelectric heater 103 such as fracture or bending, or buckling deformation of thetobacco rod 2. Further, the above-mentioned configuration helps to, in attaching thetobacco rod 2 into theaccommodating cavity 107 of theheating device 100, prevent or inhibit thetobacco filler 21 of thetobacco rod 2 from being pushed toward the mouth end. - In
Embodiment 1, the heater-insertion cavity 23 of the tobacco rod 2 (tobacco filler 21) has the shape of a circular cone. This suitably ensures tight contact between thetobacco filler 21, which laterally surrounds the heater-insertion cavity 23, and theelectric heater 103 upon insertion of theelectric heater 103 into the heater-insertion cavity 23. This leads to improved heat conduction from theelectric heater 103 to thetobacco filler 21. Further, the above-mentioned configuration also ensures that, in withdrawing thetobacco rod 2 of theheated tobacco product 1 from theaccommodating cavity 107 of theheating device 100 after use of theheated tobacco product 1, the friction between theelectric heater 103 and thetobacco filler 21 is small, and thus thetobacco filler 21 is less likely to drop off. Furthermore, the above-mentioned configuration also helps to reduce the chances of seizing of thetobacco filler 21 during use. This results in reduced chances of thetobacco filler 21 dropping off as thetobacco rod 2 is withdrawn from theaccommodating cavity 107 of theheating device 100 after use. - The heater-
insertion cavity 23 of the tobacco rod 2 (tobacco filler 21) according toEmbodiment 1 may have a cross-sectional area orthogonal to the central axis CL1 of thetobacco rod 2 that is smaller than the cross-sectional area at corresponding opposed locations of theelectric heater 103 inserted into thetobacco rod 2 to a specified depth.Fig. 4 illustrates theelectric heater 103 inserted into thetobacco rod 2 to a specified depth as thetobacco rod 2 is attached into theaccommodating cavity 107 of theheating device 100. InEmbodiment 1, the heater-insertion cavity 23 has a diameter (cross-sectional area) that is set within a range of greater than or equal to 70% and less than or equal to 99% of the diameter (cross-sectional area) at corresponding opposed locations of theelectric heater 103 inserted into thetobacco rod 2 to a specified depth. The term "corresponding opposed locations" as used herein refers to locations where, with theelectric heater 103 inserted into thetobacco rod 2 to a specified depth, theelectric heater 103 and the heater-insertion cavity 23 are opposed to each other. - As described above, the heater-
insertion cavity 23 of the tobacco rod 2 (tobacco filler 21) according toEmbodiment 1 has a cross-sectional area smaller than the cross-sectional area at corresponding locations of theelectric heater 103 of theheating device 100 for which theheated tobacco product 1 is to be used. In this case, during insertion of theelectric heater 103 into the heater-insertion cavity 23, theelectric heater 103 forces the heater-insertion cavity 23 to spread apart as theelectric heater 103 is inserted into the heater-insertion cavity 23. This further ensures tight contact between thetobacco filler 21, which laterally surrounds the heater-insertion cavity 23, and theelectric heater 103, leading to improved heat conduction from theelectric heater 103 to thetobacco filler 21. -
Fig. 5 illustrates the tobacco rod 2 (tobacco filler 21) according to a first modification. Thetobacco rod 2 according to the first modification has a heater-insertion cavity 23A in the shape of a circular cylinder with a diameter that is constant along the central axis CL1 of thetobacco rod 2.Fig. 6 illustrates thetobacco rod 2 according to the first modification when attached into theaccommodating cavity 107 of theheating device 100.Fig. 6 depicts anelectric heater 103A inserted into thetobacco rod 2 to a specified depth. As with the heater-insertion cavity 23A according to the first modification, theelectric heater 103A according to the first modification has the shape of a circular cylinder. - For the heater-
insertion cavity 23A according to the first modification as well, the diameter of the heater-insertion cavity 23A may be set to a small value relative to the diameter (cross-sectional area) of theelectric heater 103A. In this case, during insertion of theelectric heater 103A into the heater-insertion cavity 23A, theelectric heater 103A forces the heater-insertion cavity 23A to spread apart as theelectric heater 103A is inserted into the heater-insertion cavity 23A. This allows for tight contact between thetobacco filler 21, which laterally surrounds the heater-insertion cavity 23A, and theelectric heater 103A. This results in improved efficiency of heat conduction from theelectric heater 103A to thetobacco filler 21. - In this regard, excessively reducing the diameter of the heater-
insertion cavity 23A tends to result in increased resistance encountered during insertion of theelectric heater 103A into the heater-insertion cavity 23A, whereas excessively increasing the diameter of the heater-insertion cavity 23A tends to result in poor contact upon insertion of theelectric heater 103A into the heater-insertion cavity 23A. Accordingly, the diameter (cross-sectional area) of the heater-insertion cavity 23A according to the first modification is set within a range of greater than or equal to 70% and less than or equal to 99% of the diameter (cross-sectional area) of theelectric heater 103A. This makes it possible to meet the above-mentioned requirements regarding both the resistance encountered during insertion of theelectric heater 103A, and the proper contact after the insertion. This results in both improved usability in attaching thetobacco rod 2 to the heating device 100 (in inserting theelectric heater 103A into the tobacco rod 2), and improved heating efficiency in heating thetobacco filler 21 with theelectric heater 103A. - Further, the heater-
insertion cavity 23A according to the first modification has the shape of a circular cylinder with a constant diameter as described above. This helps to ensure that, during heating with the heater, thetobacco filler 21 around the heater-insertion cavity 23A can be sufficiently heated even at a location near thesecond end 23b. This makes it possible to, during heating with the heater, prevent or inhibit creation of a temperature distribution within thetobacco filler 21 along the central axis CL1. This leads to increased aerosol delivery or improved stability of delivery. - The heater-
insertion cavity 23A according to the first modification is preferably formed in the shape of a circular cylinder with a diameter of greater than or equal to 1 mm and less than or equal to 4 mm. The heater-insertion cavity 23A preferably has a diameter that is greater than or equal to 10% and less than or equal to 80% of the diameter of thetobacco rod 2. For example, if thetobacco rod 2 has a diameter of 7 mm, the heater-insertion cavity 23A preferably has a diameter of about 2.5 mm. -
Fig. 7 illustrates the tobacco rod 2 (tobacco filler 21) according to a second modification. Thetobacco rod 2 according to the second modification has a heater-insertion cavity 23B in the shape of a circular cone frustum (circular truncated cone) that tapers down along the central axis CL1 of thetobacco rod 2.Fig. 8 illustrates thetobacco rod 2 according to the second modification when attached into theaccommodating cavity 107 of theheating device 100.Fig. 8 depicts anelectric heater 103B inserted into thetobacco rod 2 to a specified depth. As with the heater-insertion cavity 23B according to the second modification, theelectric heater 103B according to the second modification has the shape of a circular cone frustum (circular truncated cone). - For the heater-
insertion cavity 23B according to second modification as well, the diameter of the heater-insertion cavity 23B may be set to a value smaller than the diameter (cross-sectional area) at corresponding opposed locations of theelectric heater 103B inserted into thetobacco rod 2 to a specified depth. In this case, during insertion of theelectric heater 103B into the heater-insertion cavity 23B, theelectric heater 103B forces the heater-insertion cavity 23B to spread apart as theelectric heater 103B is inserted into the heater-insertion cavity 23B. This allows for tight contact between thetobacco filler 21, which laterally surrounds the heater-insertion cavity 23B, and theelectric heater 103B. This results in improved efficiency of heat conduction from theelectric heater 103B to thetobacco filler 21. - In this regard, excessively reducing the diameter of the heater-
insertion cavity 23B tends to result in increased resistance encountered during insertion of theelectric heater 103B into the heater-insertion cavity 23B, whereas excessively increasing the diameter of the heater-insertion cavity 23B tends to result in poor contact upon insertion of theelectric heater 103B into the heater-insertion cavity 23B. Accordingly, the heater-insertion cavity 23B according to the second modification has a diameter (cross-sectional area) that is set within a range of greater than or equal to 70% and less than or equal to 99% of the diameter (cross-sectional area) at corresponding opposed locations of theelectric heater 103B inserted into thetobacco rod 2 to a specified depth. This makes it possible to meet the above-mentioned requirements regarding both the resistance encountered during insertion of theelectric heater 103B into thetobacco rod 2, and the proper contact after the insertion. This results in both improved usability in attaching thetobacco rod 2 to the heating device 100 (in inserting theelectric heater 103B into the tobacco rod 2), and improved heating efficiency in heating thetobacco filler 21 with theelectric heater 103B. - The heater-
insertion cavity 23B according to the second modification is designed to have the shape of a circular cone frustum (circular truncated cone). This makes it possible to achieve both the advantage of using the heater-insertion cavity 23 designed to have the shape of a circular cone, and the advantage of using the heater-insertion cavity 23 designed to have the shape of a circular cylinder. - That is, the heater-
insertion cavity 23B according to the second modification tends to have a diameter at thesecond end 23b near the mouth end that is greater than the diameter of the corresponding portion of the heater-insertion cavity 23 designed to have the shape of a circular cone. This helps to ensure that during heating with the heater, a temperature distribution is less likely to occur within thetobacco filler 21 along the central axis CL1. Further, the heater-insertion cavity 23B according to the second modification has a diameter (cross-sectional area) that tapers down along the central axis CL1 of thetobacco rod 2. This makes it possible to reduce the resistance encountered during insertion of theelectric heater 103B into thetobacco rod 2 and, at the same time, ensure improved contact after the insertion. - In this regard, the heater-
insertion cavity 23B according to the second modification preferably has a diameter of greater than or equal to 1 mm and less than or equal to 4 mm at thefirst end 23a, which is located near thedistal end face 2a of thetobacco rod 2, and a diameter of greater than or equal to 0.5 mm and less than or equal to 3.5 mm at thesecond end 23b, which is located opposite to thedistal end face 2a. The heater-insertion cavity 23B preferably has a diameter at thefirst end 23a located near thedistal end face 2a of thetobacco rod 2 that is greater than or equal to 10% and less than or equal to 80% of the diameter of thetobacco rod 2, and has a diameter at thesecond end 23b that is greater than or equal to 5% and less than or equal to 70% of the diameter of thetobacco rod 2. - The heater-
insertion cavity Embodiment 1 may not necessarily have the shape of a circular cone, a circular cylinder, or a circular cone frustum as described above but may have various other shapes. Likewise, the number of heater-insertion cavities insertion cavities - Although the foregoing description is directed to an exemplary case where the heater-
insertion cavity tobacco rod 2 along the central axis CL1 of thetobacco rod 2, the heater-insertion cavity tobacco rod 2.Fig. 9A illustrates a heater-insertion cavity 23C according to a third modification. The heater-insertion cavity 23C according to the third modification is identical to the heater-insertion cavity 23 illustrated inFig. 2 , except that the heater-insertion cavity 23C has the shape of a circular cone formed as a through-hole that penetrates thetobacco rod 2.Fig. 9B illustrates a heater-insertion cavity 23D according to a fourth modification. The heater-insertion cavity 23D according to the fourth modification is identical to the heater-insertion cavity 23A illustrated inFig. 5 , except that the heater-insertion cavity 23D has the shape of a circular cylinder formed as a through-hole that penetrates thetobacco rod 2.Fig. 9C illustrates a heater-insertion cavity 23E according to a fifth modification. The heater-insertion cavity 23E according to the fifth modification is identical to the heater-insertion cavity 23B illustrated inFig. 7 , except that the heater-insertion cavity 23E has the shape of a circular cone frustum formed as a through-hole that penetrates thetobacco rod 2. - As illustrated in
Figs. 9A to 9C , if the heater-insertion cavity tobacco rod 2 along the central axis CL1 of thetobacco rod 2, thetobacco rod 2 may preferably be connected integrally to thefilter 3 by means of a filter-tip attachment device after the heater-insertion cavity tobacco rod 2. This ensures that, for example, in forming the heater-insertion cavity distal end face 2a of thetobacco rod 2, even if thetobacco filler 21 is pushed out by the needle toward the mouth end, no particular problem arises if thetobacco rod 2 is connected to thefilter 3 after such a situation occurs. - Forming the heater-
insertion cavity tobacco rod 2 as illustrated inFigs. 9A to 9C ensures that notobacco filler 21 exists downstream of the distal end of theelectric heater 103, which in turn ensures that no decrease in thermal conductivity occurs during heating with the heater. This helps to prevent or inhibit an aerosol generated during heating with the heater from being cooled to condense by a portion of thetobacco filler 21 located near the distal end of theelectric heater 103. This results in increased aerosol delivery during use. - In contrast, forming the heater-
insertion cavity tobacco rod 2 as illustrated inFigs. 2 ,5 , and7 ensures that, for example, in forming the heater-insertion cavity distal end face 2a of thetobacco rod 2, thetobacco filler 21 of thetobacco rod 2 is not pushed out by the needle toward the mouth end. This allows the heater-insertion cavity filter 3 is coupled to thetobacco rod 2 by means of the filter-tip attachment device. This leads to improved manufacturability. - Although embodiments of the present invention have been described above, the heated tobacco product according to the present invention is not limited to the embodiments described above.
-
- 1
- heated tobacco product
- 2
- tobacco rod
- 3
- filter
- 4
- support part
- 5
- cooling part
- 6
- mouthpiece part
- 21
- tobacco filler
- 23
- heater-insertion cavity
Claims (11)
- A heated tobacco product, the heated tobacco product having a tobacco rod formed by filling a space inside wrapping paper with a tobacco filler, the tobacco filler including a tobacco raw material and an aerosol-source material, the heated tobacco product comprising
a heater-insertion cavity that receives a heater inserted into the heater-insertion cavity, the heater being a heater of a heating device, the heater-insertion cavity being open near a distal end face of the tobacco rod and extending in an axial direction of the tobacco rod. - The heated tobacco product according to Claim 1, wherein the heater-insertion cavity has a cross-sectional area orthogonal to the axial direction of the tobacco rod that is smaller than a cross-sectional area at corresponding opposed locations of the heater inserted into the tobacco rod to a specified depth.
- The heated tobacco product according to Claim 2, wherein the heater-insertion cavity has a cross-sectional area orthogonal to the axial direction of the tobacco rod that is set within a range of greater than or equal to 70% and less than or equal to 99% of a cross-sectional area at corresponding opposed locations of the heater inserted into the tobacco rod to a specified depth.
- The heated tobacco product according to any one of Claims 1 to 3, wherein the heater-insertion cavity has a shape of a circular cylinder with a diameter of greater than or equal to 1 mm and less than or equal to 4 mm.
- The heated tobacco product according to any one of Claims 1 to 3, wherein the heater-insertion cavity has a shape of a circular cone that tapers down in the axial direction of the tobacco rod, the heater-insertion cavity having a diameter of greater than or equal to 1 mm and less than or equal to 4 mm at a first end located near the distal end face of the tobacco rod, the heater-insertion cavity having a diameter of greater than 0 mm and less than or equal to 0.5 mm at a second end located opposite to the distal end face.
- The heated tobacco product according to any one of Claims 1 to 3, wherein the heater-insertion cavity has a shape of a circular cone frustum that tapers down in the axial direction of the tobacco rod, the heater-insertion cavity having a diameter of greater than or equal to 1 mm and less than or equal to 4 mm at a first end located near the distal end face of the tobacco rod, the heater-insertion cavity having a diameter of greater than or equal to 0.5 mm and less than or equal to 3.5 mm at a second end located opposite to the distal end face.
- The heated tobacco product according to any one of Claims 1 to 6,wherein the heated tobacco product has a filter coaxially coupled to a portion of the tobacco rod located near a proximal end of the tobacco rod, andwherein the filter includes a cooling part to cool a volatile substance, the volatile substance being released from the aerosol-source material included in the tobacco filler.
- The heated tobacco product according to Claim 7, wherein the filter includes a support part, the support part being disposed at a connection end of the filter to prevent or inhibit the tobacco filler from being pushed toward a mouth end of the filter upon insertion of the heater into the heater-insertion cavity, the connection end being an end connected to a portion of the tobacco rod located near the proximal end of the tobacco rod.
- The heated tobacco product according to Claim 8, wherein the filter includes a mouthpiece part disposed near the mouth end of the filter.
- The heated tobacco product according to any one of Claims 1 to 9, wherein the heater-insertion cavity is formed as a through-hole that penetrates the tobacco rod.
- The heated tobacco product according to any one of Claims 1 to 9, wherein the heater-insertion cavity is formed as a recess that does not penetrate the tobacco rod.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2019/016705 WO2020213143A1 (en) | 2019-04-18 | 2019-04-18 | Heated tobacco product |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3957199A1 true EP3957199A1 (en) | 2022-02-23 |
EP3957199A4 EP3957199A4 (en) | 2022-12-14 |
Family
ID=72837127
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19925253.7A Pending EP3957199A4 (en) | 2019-04-18 | 2019-04-18 | Heated tobacco product |
Country Status (6)
Country | Link |
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US (1) | US20220030936A1 (en) |
EP (1) | EP3957199A4 (en) |
JP (1) | JP7012902B2 (en) |
KR (1) | KR20210151193A (en) |
CN (1) | CN113710108A (en) |
WO (1) | WO2020213143A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022263842A1 (en) * | 2021-06-18 | 2022-12-22 | Nicoventures Trading Limited | Article for use in a non-combustible aerosol provision system |
Families Citing this family (6)
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JPWO2022138015A1 (en) * | 2020-12-24 | 2022-06-30 | ||
EP4062780A1 (en) * | 2021-03-26 | 2022-09-28 | Starker International Pte. Ltd. | Jig for use with a heating device suitable for heating an aerosol generating substrate |
EP4316272A1 (en) * | 2021-03-31 | 2024-02-07 | Japan Tobacco, Inc. | Heat-not-burn flavor inhalation article and heat-not-burn flavor inhalation product |
EP4183270A4 (en) * | 2021-09-26 | 2023-08-02 | Shenzhen Smoore Technology Limited | Aerosol generating matrix, and aerosol generating apparatus and system |
JPWO2023089803A1 (en) * | 2021-11-22 | 2023-05-25 | ||
WO2023223493A1 (en) * | 2022-05-19 | 2023-11-23 | 日本たばこ産業株式会社 | Flavor generating article and smoking system |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1512632A (en) | 1974-03-08 | 1978-06-01 | British Steel Corp | Grain-oriented steel |
US8235056B2 (en) | 2006-12-29 | 2012-08-07 | Philip Morris Usa Inc. | Smoking article with concentric hollow core in tobacco rod and capsule containing flavorant and aerosol forming agents in the filter system |
AR089602A1 (en) * | 2011-12-30 | 2014-09-03 | Philip Morris Products Sa | AEROSOL GENERATOR ARTICLE FOR USE WITH AN AEROSOL GENERATOR DEVICE |
AU2014375382B2 (en) * | 2013-12-31 | 2019-01-17 | Philip Morris Products S.A. | An aerosol-generating device, and a capsule for use in an aerosol-generating device |
EP3804540B1 (en) * | 2015-02-06 | 2024-01-10 | Philip Morris Products S.A. | Improved extractor for an aerosol-generating device |
GB201505593D0 (en) * | 2015-03-31 | 2015-05-13 | British American Tobacco Co | Article for use with apparatus for heating smokable material |
GB201505592D0 (en) * | 2015-03-31 | 2015-05-13 | British American Tobacco Co | Apparatus for heating smokable material |
WO2017032695A1 (en) * | 2015-08-21 | 2017-03-02 | Philip Morris Products S.A. | A cartridge assembly for an aerosol-generating system and an aerosol-generating system comprising a cartridge assembly |
US11083213B2 (en) * | 2016-03-09 | 2021-08-10 | Philip Morris Products S.A. | Aerosol-generating article |
WO2020121374A1 (en) * | 2018-12-10 | 2020-06-18 | 日本たばこ産業株式会社 | Non-combustible heating-type smoking device |
EP3949769A4 (en) * | 2019-03-28 | 2022-11-16 | Japan Tobacco Inc. | Heating-type tobacco, heating-type tobacco product, and method and device for producing tobacco rod for heating-type tobacco |
EP3949770A4 (en) * | 2019-03-28 | 2022-11-16 | Japan Tobacco Inc. | Heating-type tobacco |
-
2019
- 2019-04-18 WO PCT/JP2019/016705 patent/WO2020213143A1/en active Application Filing
- 2019-04-18 CN CN201980095549.4A patent/CN113710108A/en active Pending
- 2019-04-18 EP EP19925253.7A patent/EP3957199A4/en active Pending
- 2019-04-18 KR KR1020217036879A patent/KR20210151193A/en not_active Application Discontinuation
- 2019-04-18 JP JP2021514760A patent/JP7012902B2/en active Active
-
2021
- 2021-10-15 US US17/503,052 patent/US20220030936A1/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2022263842A1 (en) * | 2021-06-18 | 2022-12-22 | Nicoventures Trading Limited | Article for use in a non-combustible aerosol provision system |
Also Published As
Publication number | Publication date |
---|---|
EP3957199A4 (en) | 2022-12-14 |
JP7012902B2 (en) | 2022-01-28 |
US20220030936A1 (en) | 2022-02-03 |
CN113710108A (en) | 2021-11-26 |
KR20210151193A (en) | 2021-12-13 |
JPWO2020213143A1 (en) | 2021-11-25 |
WO2020213143A1 (en) | 2020-10-22 |
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