Classifications

• • 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
  • 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
  • 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
  • A24B15/18—Treatment of tobacco products or tobacco substitutes
  • A24B15/28—Treatment of tobacco products or tobacco substitutes by chemical substances
  • A24B15/30—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances
  • A24B15/32—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances by acyclic compounds
• • 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
  • 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
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
  • A24F47/00—Smokers' requisites not otherwise provided for

Definitions

• the present invention relates to a heat-not-burn flavor inhalation system.
• the flavor of a burn-type flavor inhaler is experienced by burning a tobacco rod that contains a tobacco filling material.
• Heat-not-burn flavor inhalers with which the flavor is experienced by heating instead of burning the tobacco rod, are being proposed as a substitute for burn-type flavor inhalers.
• a tobacco rod is electrically heated at 200-400°C to volatilize a tobacco component which is inhaled by a user.
• the tobacco rod may be formed by wrapping the tobacco filling material with a paper wrapper or the like, in a cylindrical form.
• the tobacco rod may be formed by grinding then mixing dried tobacco plant (mainly dried tobacco leaf), shaping the mixture into the form of a sheet, then cutting the sheet and wrapping it with a paper wrapper.
• the tobacco rod may be formed by crimping the sheet to form gathers, without cutting the shaped material, and then wrapping the sheet with the paper wrapper in that state.
• the tobacco filling material may comprise various volatile flavourings, in addition to tobacco plant.
• the tobacco filling material may further contain an aerosol source such as glycerol or propylene glycol.
• the aerosol source volatilizes when the tobacco rod is heated, and, as the user draws in, the aerosol source is cooled in a cooling segment disposed downstream of the tobacco rod, and is liquefied to form an aerosol which is then supplied into the user's mouth.
• the aerosol is supplied to the user along with the tobacco component, so the user can experience sufficient flavor.
• Examples of heating methods that may be cited for heat-not-burn flavor inhalers which electrically heat a tobacco rod include a method of heating the outer circumference of the tobacco rod (e.g., see PTL 1), and a method of heating the inside of the tobacco rod (e.g., see PTL 2), etc.
• PTL 3 and 4 describe a tobacco rod having two segments as a tobacco rod for a heat-not-burn flavor inhaler.
• the aerosol source-containing segment according to this embodiment contains an aerosol source.
• the aerosol source which may be cited include glycerol, propylene glycol, sorbitol, xylitol, erythritol, triacetin, and 1,3-butanediol.
• One type of aerosol source may be used, or two or more types may be used in combination.
• the aerosol source-containing segment according to this embodiment preferably does not contain a tobacco component from the perspective of enabling a greater reduction in the amount of secondarily-generated components which are formed.
• the heat-not-burn flavor inhaler comprises a flavoring component which will be described later
• the flavoring component is preferably not contained in the aerosol source-containing segment, i.e., is preferably contained in a segment other than the aerosol source-containing segment.
• the aerosol source-containing segment preferably comprises an aerosol source support in which the aerosol source is supported by a carrier.
• the carrier is preferably a porous material from the perspective of enabling the aerosol source to be sufficiently retained. Examples of porous materials which may be cited include nonwoven fabrics, dietary fiber sheets, and paper, etc.
• the aerosol source support preferably has a content of the aerosol source contained in the heat-not-burn flavor inhaler which is an amount of 10-5000 g, more preferably 10-200 mg, and even more preferably 20-120 mg.
• the aerosol source may also be supported by another carrier, other than a porous material, such as a metal foil, wood, carbon, cellulose powder, alumina powder, silicon dioxide, or fiber, for example.
• the aerosol source-containing segment 4 may comprise, for example: a cylindrical wrapper 10, and an aerosol support 9 which fills the inside of the wrapper 10.
• the carrier of the aerosol source support is a nonwoven fabric
• the thickness of the nonwoven fabric there is no particular limitation as to the thickness of the nonwoven fabric but it may be 0.1-2.0 mm, for example.
• the carrier of the aerosol source support is paper
• the thickness of the paper there is no particular limitation as to the thickness of the paper but it may be 50-200 ⁇ m, for example.
• multiple sheets of the aerosol source carrier may be stacked and folded into an S-shape, and the inside of the wrapper may be filled with the folded sheets in that state.
• a sheet of the aerosol source carrier may be gathered, and the inside of the wrapper may be filled with the gathered sheet in that state.
• the wrapper is preferably a wrapper having low liquid permeability, from the perspective of suppressing seepage of the aerosol source.
• Examples of sparingly liquid-permeable wrappers that may be cited include: a metal foil, a laminated sheet comprising a metal foil and paper, a polymer film, a laminated sheet comprising a polymer film and paper, and paper surface-coated with a coating agent which obstructs liquid permeation, such as modified cellulose, modified starch, polyvinyl alcohol, and vinyl acetate, etc.
• the wrapper preferably comprises a metal foil having excellent thermal conductivity from the perspective of enabling a uniform temperature distribution in a longitudinal direction of the aerosol source-containing segment, in addition to the perspective of preventing liquid permeation.
• Thickeners which may be cited include: polysaccharide thickeners such as gellan gum, tamarind gum, agar, carrageenan, pectin, and alginic acid salts, proteins such as collagen and gelatin, modified celluloses such as HPC, CMC and HPMC, shellac, paraffin wax, beeswax, starch, processed starch, and oils and fats, etc.
• polysaccharide thickeners such as gellan gum, tamarind gum, agar, carrageenan, pectin, and alginic acid salts, proteins such as collagen and gelatin, modified celluloses such as HPC, CMC and HPMC, shellac, paraffin wax, beeswax, starch, processed starch, and oils and fats, etc.
• One type of thickener may be used, or two or more types may be used in combination.
• the content of the thickener also depends on the type of thickener which is used, but is preferably 0.1-
• the axial length of the aerosol source-containing segment may be 5-15 mm, for example.
• the circumferential length of the aerosol source-containing segment may be 15-24 mm, for example.
• the tobacco component-containing segment according to this embodiment comprises a tobacco component.
• the tobacco component-containing segment according to this embodiment may comprise a tobacco material containing the tobacco component, and preferably comprises, for example, a tobacco material such as tobacco granules, tobacco powder, shredded tobacco, tobacco sheet, and tobacco extract.
• Whole tobacco or parts of tobacco may be used as a tobacco starting material, which is the starting material of the tobacco material, and parts of tobacco that may be cited include leaves, veins, stems, roots, flowers, and mixtures thereof.
• tobacco starting material There is no particular restriction on the variety of tobacco starting material, but yellow, Burley, Oriental or native type, etc. may be cited.
• One type of tobacco may be used, or two or more types may be used in combination.
• the tobacco starting material which is used may be in the state of raw leaves immediately after harvesting which have not been dried, etc., or may be a material which has been dried and aged after harvesting, or a combination thereof may be used.
• midrib tobacco or expanded tobacco, etc. obtained by treating the above tobacco starting materials may also be used.
• tobaccos may be used alone, or multiple varieties and parts may be used in combination.
• a tobacco extract obtained by extracting the tobacco starting material using a protic solvent or an aprotic solvent, etc. may also be suitably used as a desired flavor source serving as the tobacco starting material.
• Tobacco granules may be obtained by molding a composition comprising aged tobacco leaf or tobacco extract into a granular form, for example.
• a composition comprising aged tobacco leaf or tobacco extract into a granular form
• the kneaded material is preferably extruded at ambient temperature and a pressure of 2 kN or greater.
• the temperature of the kneaded material at the extrusion granulator outlet is momentarily and sharply raised from ambient temperature to 90-100°C, for example, and 2-4 mass% of moisture and volatile components are evaporated.
• the amount of water which is blended in order to prepare the kneaded material may therefore be increased by the amount of evaporation from the desired amount of moisture in the tobacco granules.
• the tobacco granules obtained by means of extrusion granulation may further be dried, as required, in order to adjust the moisture.
• the average particle size (D50) of the molded tobacco granules may be 0.2 mm-1.2 mm, preferably 0.2 mm-1.0 mm, and more preferably 0.2 mm-0.8 mm.
• a powdery tobacco starting material may be used as the tobacco powder.
• the tobacco powder may be prepared by any method, but, preferably, the tobacco starting material undergoes a normal drying treatment, is then coarsely ground in a normal coarse grinder, and then finely ground.
• the drying treatment and the coarse grinding may be carried out in a well-known manner, and the mean particle size of the coarsely ground tobacco powder is preferably in a range of between several hundred ⁇ m and several mm.
• the method of fine grinding and either a wet grinding or dry grinding method may be used.
• Wet grinding may be carried out by adding a liquid dispersion medium to the coarsely ground tobacco powder and mixing the materials, and then treating the mixture in a wet fine grinder (e.g., an MIC-2, manufactured by Nara Machinery).
• a wet fine grinder e.g., an MIC-2, manufactured by Nara Machinery
• the rotation speed of the grinder is normally set at 1100-1300 rpm, with a grinding time of around 5-100 minutes.
• dry grinding may be carried out by treating the coarsely ground tobacco powder in a dry fine grinder such as a jet mill.
• the average particle size of the tobacco powder may be approximately 30 ⁇ m.
• the average particle size of the tobacco powder may be adjusted by the grinding conditions, and the average particle size may be increased by shortening the fine grinding time or reducing the viscosity of the dispersion medium, etc., for example.
• the average particle size of the tobacco powder in this embodiment is obtained by means of a laser diffraction scattering method. Specifically, the average particle size is measured using a laser diffraction-type particle size distribution measurement apparatus (e.g., a Shimadzu nanoparticle size distribution measurement apparatus SALD-2100 (trade name)) with a refractive index of 1.60-0.101.
• SALD-2100 Shimadzu nanoparticle size distribution measurement apparatus
• Shredded tobacco may be, for example, aged tobacco leaf, etc., which has been shredded to a predetermined size.
• aged tobacco leaf used in the shredded tobacco
• aged tobacco leaf which has been destemmed and separated into lamina and midrib may be cited.
• a material obtained by shredding a tobacco sheet (to be described later) to a predetermined size also be cited as shredded tobacco.
• shredded tobacco sheet a material obtained by shredding aged tobacco leaf and shredded tobacco sheet
• a blend of shredded tobacco obtained by shredding aged tobacco leaf and shredded tobacco sheet may be cited as shredded tobacco.
• a material obtained by shredding aged tobacco leaf to a width of 0.5 mm-2.0 mm and a length of 3 mm-10 mm may be cited as an example.
• a material obtained by shredding processed tobacco leaf to a width of 0.5 mm-2.0 mm and a length greater than the abovementioned shredded tobacco, preferably a length comparable with a filled material may be cited as another example (which may also be referred to below as "strand-type shreds").
• Strand-type shreds preferably employ tobacco sheet from the point of view of ease of molding.
• a tobacco sheet may be obtained by molding a composition comprising aged tobacco leaf or tobacco extract, etc. into a sheet form, for example.
• a composition comprising aged tobacco leaf or tobacco extract, etc.
• aged tobacco leaf which has been destemmed and separated into lamina and midrib may be cited, for example.
• a "sheet” as referred to in the present specification means a shape having a pair of substantially parallel main faces and a side face.
• the tobacco sheet may be molded by well-known methods such as sheet-forming, casting, or rolling. Details on various types of tobacco sheets molded by such methods are disclosed in "Dictionary of Tobacco, Tobacco Academic Studies Center, March 31, 2009".
• Examples of methods for molding a tobacco sheet by means of a sheet-forming method include methods comprising the following steps.
• Examples of methods for molding a tobacco sheet by means of a casting method that may be cited include methods comprising the following steps.
• the inside of a tube processed into a cylindrical shape is preferably also filled with a cooling sheet member.
• one or more air circulation channels are provided in a flow direction, making it possible to achieve low-level removal of components during passage through the segment, while also providing cooling by means of the cooling sheet.
• the airflow resistance of the cooling segment when it is filled with this cooling sheet is preferably 0-30 mmH 2 O.
• the airflow resistance (RTD) is the pressure required to push air through the entire length of an object in a test with a flow rate of 17.5 mL/sec at 22°C and 101 kPa (760 Torr). RTD is generally expressed in units of mmH 2 O and is measured in accordance with ISO 6565:2011.
• a hole for introduction of external air is also preferably formed in the tube member in the mode employing the cooling sheet as a filling.
• the total surface area of the cooling sheet member may be 300 mm 2 /mm-1000 mm 2 /mm. This surface area is the surface area per length (mm) of the cooling sheet member in the air flow direction.
• the total surface area of the cooling sheet member is preferably 400 mm 2 /mm or greater and more preferably 450 mm 2 /mm or greater, while preferably being 600 mm 2 /mm or less, and more preferably 550 mm 2 /mm or less.
• the cooling sheet member preferably has a large surface area from the perspective of the cooling function. From the perspective of reducing removal of the tobacco component and aerosol source by filtration and adsorption, the cooling segment filled with the cooling sheet member preferably has a lower airflow resistance. Accordingly, in a preferred embodiment, the cooling sheet may be formed by a sheet which is a thin material that is creased and then fluted, gathered and folded in order to form channels in the flow direction.
• the thickness of the material constituting the cooling sheet member may be 5 ⁇ m-500 ⁇ m, and may be 10 ⁇ m-250 ⁇ m, for example.
• the paper used in the cooling sheet member preferably has a basis weight of 30-100 g/m 2 and a thickness of 20-100 ⁇ m. From the perspective of reducing removal of the tobacco component and aerosol source component in the cooling segment, the paper serving as the cooling sheet material preferably has low air permeability, and an air permeability of 10 CORESTA units or less is preferred.
• the cooling effect may also be increased by utilizing heat absorption by a coating or heat of solution associated with a change of phase, by coating the paper serving as the cooling sheet member with a polymer coating such as polyvinyl alcohol or a polysaccharide coating such as pectin.
• a perforation 14 is provided penetrating both the cylindrical member 13 and a mouthpiece lining paper 20 which will be described later.
• the presence of the perforation 14 allows external air to be introduced into the cooling segment 6 during drawing.
• the aerosol vaporized component generated by heating of the aerosol-generating rod 2 is liquefied because it comes into contact with the external air so that the temperature thereof decreases, and an aerosol is formed.
• the diameter of (length across) the perforation 14 but it may be 0.5 mm-1.5 mm, for example.
• the amount of external air introduced from the perforation 14 is preferably 85 vol% or less and more preferably 80 vol% or less, with respect to the overall volume of gas drawn in by the user.
• a ratio of the amount of external air of 85 vol% or less makes it possible to sufficiently suppress a reduction in flavor caused by dilution with the external air. It should be noted that this may also be referred to as the ventilation ratio.
• a lower limit of the ventilation ratio range is preferably 55 vol% or greater, and more preferably 60 vol% or greater, from the perspective of cooling properties.
• the temperature of the aerosol generated may decrease by 10°C or more when the aerosol passes through the cooling segment to be inhaled by the user. In another mode, the temperature may decrease by 15°C or more, and in yet another mode, the temperature may decrease by 20°C or more.
• the cooling segment may be formed into a rod shape with an axial length of 7 mm-30 mm, for example.
• the axial length of the cooling segment may be set at 20 mm, for example.
• the cooling segment has a substantially circular shape in an axial cross section thereof, and a circumferential length thereof is preferably 16-25 mm, more preferably 20-24 mm, and even more preferably 21-23 mm.
• the center hole segment may be formed by a second cylindrical member.
• the centre hole segment may be formed by a filling layer having one or more hollow portions, and an inner plug wrapper (inside wrapping paper) covering the filling layer.
• the center hole segment 7 may be formed by a second filling layer 15 having a hollow portion, and a second inner plug wrapper 16 covering the second filling layer 15.
• the center hole segment 7 has the function of increasing the strength of the mouthpiece segment 3.
• the second filling layer 15 may be formed, for example, as a rod having an inner diameter of ⁇ 1.0 mm- ⁇ 5.0 mm packed with a high density of cellulose acetate fibers, a plasticizer comprising triacetin being added thereto in an amount of 6 mass%-20 mass%, in relation to the mass of cellulose acetate, and the plasticizer being cured.
• the second filling layer 15 has a high packing density of fibers, so the air and aerosol flow only through the hollow portion during drawing, with virtually none flowing through the second filling layer 15.
• the second filling layer 15 inside the center hole segment 7 is a fiber filled layer, and the user will therefore have little sense of incongruity when touching the outside during use.
• the shape of the center hole segment 7 may also be retained by means of thermoforming, without the second inner plug wrapper 16 being provided.
• the filter segment may be formed from a single filling layer or multiple filling layers.
• a first filling layer 17 may be wrapped with a first inner plug wrapper 18 (inside wrapping paper) in the filter segment 8.
• the airflow resistance per segment of the filter segment may be suitably altered by the amount and material, etc. of the filling material filling the filter segment.
• the filling material is cellulose acetate fibers
• the airflow resistance may be increased by increasing the amount of cellulose acetate fibers filling the filter segment.
• the packing density of cellulose acetate fibers may be 0.13-0.18 g/cm 3 .
• thicker cellulose acetate fibers are preferred as a filling in order to demonstrate lower airflow resistance for the same packing density.
• the thickness of one cellulose acetate fiber is preferably 5-20 denier/filament. A thickness of 7-13 denier/filament is even more preferable from the perspective of high-speed production of the filter segment.
• the airflow resistance is a value as measured by means of an airflow resistance measurement gauge (trade name: SODIMAX, produced by SODIM).
• the center hole segment 7 and the filter segment 8 may be connected by an outer plug wrapper (outside wrapping paper) 19.
• the outer plug wrapper 19 may be cylindrical paper, for example.
• the aerosol-generating rod 2, the cooling segment 6, and the connected center hole segment 7 and filter segment 8 may be connected by means of the mouthpiece lining paper 20.
• These connections may be formed, for example, by coating an inside surface of the mouthpiece lining paper 20 with a glue such as a vinyl acetate-based glue, and inserting the abovementioned three segments which are then wrapped with the mouthpiece lining paper 20. It should be noted that these segments may also be connected by multiple separate connections with multiple lining papers. Furthermore, as shown in fig.
• the aerosol source-containing segment 4 may also be fixed by means of the mouthpiece lining paper 20. Furthermore, as shown in fig. 1(c) , the aerosol source-containing segment 4 and the tobacco component-containing segment 5 may be connected by means of an outer wrapper 34, then the aerosol-generating rod 2, the cooling segment 6, and the connected center hole segment 7 and filter segment 8 may be connected by means of the mouthpiece lining paper 20.
• the axial length of the heat-not-burn flavor inhaler is preferably 40 mm-90 mm, more preferably 50 mm-75 mm, and even more preferably 50 mm-60 mm.
• the circumferential length of the heat-not-burn flavor inhaler is preferably 16 mm-25 mm, more preferably 20 mm-24 mm, and even more preferably 21 mm-23 mm.
• the length of the aerosol-generating rod is 20 mm
• the length of the cooling segment is 20 mm
• the length of the center hole segment is 8 mm
• the length of the filter segment is 7 mm.
• the lengths of these individual segments can be modified, as appropriate, depending on manufacturability and required quality, etc.
• the function of the heat-not-burn flavor inhaler can still be achieved with only the filter segment arranged on the downstream side of the cooling segment, and without the center hole segment being used.
• the content of the aerosol source contained in the heat-not-burn flavor inhaler according to this embodiment is preferably 10-5000 mg. By making this content 10 mg or greater, it is possible to suppress a reduction in the amount of aerosol during use, along with the time of use. Furthermore, by making this content 5000 mg or less, it is possible to suppress retention in the flavor inhaler of aerosol source that has not formed an aerosol. This content is more preferably 10-200 mg, and even more preferably 20-120 mg.
• the heat-not-burn flavor inhaler may comprise a flavoring component from the perspective of imparting a good flavor.
• a flavoring component from the perspective of imparting a good flavor.
• flavoring component There is no particular limitation as to the type of flavoring component, and flavoring materials, gustatory materials, and cooling agents, etc. may be cited as examples thereof.
• the nature of the flavoring component is not an issue, and solids and liquids may be cited, for example.
• a single component may be used, or multiple components may be combined.
• Flavoring materials selected from among: tobacco extract and tobacco component, sugary and sugar-based flavors, licorice (glycyrrhiza), cocoa, chocolate, fruit juice and fruits, spices, liquors, herbs, vanilla, and flower-based flavors, etc., either alone or in combination, may be cited as examples of suitable flavors of flavoring materials.
• the flavoring materials may employ a wide range of types of flavoring components, such as disclosed, for example, in "Published Collection of Well-Known Prior Arts (Flavor and Fragrance)" (March 14, 2007, published by the JPO), “Saishin Koryo no Jiten [Encyclopedia of Scents - Latest Edition] (popular edition)” (February 25, 2012, edited by Soichi ARAI, Akio KOBAYASHI, Izumi YAJIMA, Michiaki KAWASAKI, Asakura Publishing Co., Ltd.), and “Tobacco Flavoring for Smoking Products” (June 1972, R.J. REYNOLDS TOBACCO COMPANY).
• the flavoring component in this embodiment may be a flavoring component other than a tobacco component.
• Flavoring materials selected from among: isothiocyanates, indole and derivatives thereof, ethers, esters, ketones, fatty acids, aliphatic higher alcohols, aliphatic higher aldehydes, aliphatic higher hydrocarbons, thioethers, thiols, terpene hydrocarbons, phenol ethers, phenols, furfural and derivatives thereof, aromatic alcohols, aromatic aldehydes, and lactones, either alone or in combination, may be cited as examples of the flavoring materials.
• the flavoring material may also be an ingredient producing a cooling/warming sensation.
• Flavoring materials which may be cited more specifically include: acetanisole, acetophenone, acetylpyrazine, 2-acetylthiazole, alfalfa extract, amyl alcohol, amyl butyrate, trans-anethole, star anise oil, apple juice, Peru Balsam oil, beeswax absolute, benzaldehyde, benzoin resinoid, benzyl alcohol, benzyl benzoate, benzyl phenylacetate, benzyl propionate, 2,3-butanedione, 2-butanol, butyl butyrate, butyric acid, caramel, cardamom oil, carob absolute, ⁇ -carotene, carrot juice, L-carvone, ⁇ -caryophyllene, cassia bark oil, cedarwood oil, celery seed oil, chamomile oil, cinnamaldehyde, cinnamic acid, cinnamyl
• ingredients exhibiting sweetness, sourness, saltiness, an umami taste, bitterness, acerbity, body, spiciness, harshness, astringency, etc. may be cited as examples of gustatory materials.
• Saccharides, sugar alcohols, and sweeteners, etc. may be cited as examples of ingredients exhibiting sweetness.
• Monosaccharides, disaccharides, oligosaccharides, and polysaccharides, etc. may be cited as examples of saccharides.
• Natural sweeteners and synthetic sweeteners, etc. may be cited as examples of sweeteners.
• Organic acids (and sodium salts thereof), etc. may be cited as examples of ingredients exhibiting sourness.
• Acetic acid, adipic acid, citric acid, lactic acid, malic acid, succinic acid, and tartaric acid, etc. may be cited as examples of organic acids.
• Caffeine (extract), naringin, and wormwood extract, etc. may be cited as examples of ingredients exhibiting bitterness.
• Sodium chloride, potassium chloride, sodium citrate, potassium citrate, sodium acetate, and potassium acetate, etc. may be cited as examples of ingredients exhibiting saltiness.
• the flavoring component may be contained in any segment of the flavor inhaler, and may also be contained in multiple segments.
• the flavoring component may be contained in the aerosol source-containing segment, may be contained in the tobacco component-containing segment, may be contained in the cooling segment, may be contained in the center hole segment, may be contained in the filter segment, or may be contained in two or more of these segments.
• the flavoring component being contained in a segment other than the aerosol source-containing segment is preferable so that the flavoring component can be better held and sustained, without the flavoring component being heated more than necessary.
• the flavoring component may be contained in at least one segment from among the tobacco component-containing segment, the cooling segment, the center hole segment, and the filter segment.
• the flavoring component may be contained separately in each segment, or may be contained integrated into the flavor inhaler as a whole.
• the flavoring component may be contained in each segment as a flavoring component-containing sheet or as a flavoring support such as flavoring component-supporting granules or flavoring component-supporting activated carbon.
• the flavoring component may be added by means of spraying, coating of the wrapper, or filter processing, etc.
• the tobacco-containing segment preferably comprises: a flavoring component-containing sheet comprising a polysaccharide thickener and a bulking material; and the tobacco material. More of the flavoring material can be loaded in the flavor inhaler by incorporating the flavoring component into the tobacco-containing segment as a flavoring component-containing sheet, as compared to when a liquid flavoring material is added to the tobacco material.
• the tobacco-containing segment preferably comprises the flavoring component-containing sheet and the tobacco granules.
• a mass ratio of the flavoring component-containing sheet and the tobacco granules contained in the tobacco-containing segment may be selected as any ratio according to the strength of flavoring.
• the flavoring component-containing sheet may comprise the flavoring component, a polysaccharide thickener and a bulking material, and may further comprise an emulsifier.
• the flavoring component-containing sheet may be produced, for example, by kneading, in water, a starting material comprising the polysaccharide thickener, the flavoring component, the emulsifier, and the bulking material, in order to prepare a starting material slurry, which is then spread on a substrate and dried. It should be noted that the flavoring component-containing sheet may be free from a tobacco component.
• the polysaccharide thickener is more preferably selected from the group consisting of agar, gellan gum, and a mixture of gellan gum and tamarind gum.
• a mass ratio of gellan gum and tamarind gum is preferably in the range of 1:1-3:1.
• the amount of polysaccharide thickener blended in the starting material slurry is preferably 10-35 mass% and more preferably 12-25 mass%, with respect to the total mass of constituent components other than water (i.e., the mass of dry matter) in the starting material slurry.
• the amount (mass%) of polysaccharide thickener which is blended may be calculated by using values of the amounts of the respective constituent components other than water which are blended in the starting material slurry.
• the flavoring components mentioned above may be used as the flavoring component contained in the flavoring component-containing sheet.
• the flavoring component may be used in the form of a solid, or it may be used in the form of a solution or dispersion in a suitable solvent, such as propylene glycol, ethyl alcohol, benzyl alcohol, or triethyl citrate, for example.
• a flavoring component which readily forms a dispersed state in a solvent with the addition of an emulsifier, e.g., a hydrophobic flavoring material or an oil-soluble flavoring material, etc., may preferably be used.
• the shape of the powder, granules or sheet, etc. is not limited.
• the amount of flavoring component contained in the sheet is preferably less than 18 mass% with respect to the total mass of the flavoring component-containing sheet.
• the amount of flavoring component contained in the sheet is more preferably 2.5 mass% or greater and less than 18 mass%, even more preferably 2.5-12 mass%, and most preferably 3-6 mass% with respect to the total mass of the flavoring component-containing sheet.
• Any emulsifier may be used as the emulsifier contained in the flavoring component-containing sheet.
• Lecithin, and specifically Sunlecithin A-1 (trade name, manufactured by Taiyo Kagaku Co., Ltd.) may be used as the emulsifier, for example.
• the amount of emulsifier contained in the sheet is preferably 0.5-5 mass%, and more preferably 1.0-4.5 mass%, with respect to the mass of polysaccharide thickener in the sheet.
• the amount of emulsifier contained in the sheet may be calculated by using values of the amounts of emulsifier and polysaccharide thickener which are blended in the starting material slurry.
• the bulking material contained in the flavoring component-containing sheet has the role of increasing the total mass of constituent components other than water (i.e., the mass of dry matter) in the starting material slurry, and ultimately increasing the bulk of the flavoring component-containing sheet. That is to say, the bulking material is a substance which only has the role of increasing the bulk of the flavoring component-containing sheet, and does not affect the inherent function of the flavoring component-containing sheet. Specifically, the bulking material is a substance which only has the role of increasing the bulk of the flavoring component-containing sheet, and satisfies requirements (i) and (ii) below:
• a substance which increases the viscosity of the starting material slurry such as starch, is not contained in the bulking material.
• substantially does not increase the viscosity of the starting material slurry means that the substance does not cause an increase in the viscosity of the slurry to an extent that would make it difficult to produce a sheet (i.e., to an extent that would make it difficult to knead and emulsify the starting material slurry).
• the bulking material is preferably a starch hydrolysate.
• a starch hydrolysate means a substance obtained by means of a process comprising a step of hydrolyzing a starch.
• the starch hydrolysate is, for example, a substance obtained by directly hydrolyzing a starch (i.e., dextrin), or a substance obtained by hydrolyzing a starch after a heat treatment (i.e., indigestible dextrin).
• the starch hydrolysate may be prepared by means of a process comprising a hydrolysis step using a starch as a starting material, or a commercially available starch hydrolysate may be used.
• a starch hydrolysate When a starch hydrolysate is prepared, a starch of natural origin may be used as the "starch" serving as the starting material.
• a starch of plant origin e.g., corn starch, wheat starch, potato starch, or sweet potato starch, etc. may generally be used.
• a starch hydrolysate having the desired DE value may be obtained by controlling the hydrolysis conditions.
• Starch hydrolysates demonstrate different physical characteristics (e.g., DE value) in each molecule thereof due to distributions or variations in characteristics of the starch hydrolysate, or differences in cut sections. Starch hydrolysates are thus a collection of molecules exhibiting different physical characteristics, but measurement results from the Willstatter-Schudel method (i.e., DE values) are treated as representative values indicating the degree of hydrolysis of the starch.
• DE value physical characteristics
• Starch hydrolysates demonstrate different physical characteristics (e.g., DE value) in each molecule thereof due to distributions or variations in characteristics of the starch hydrolysate, or differences in cut sections.
• Starch hydrolysates are thus a collection of molecules exhibiting different physical characteristics, but measurement results from the Willstatter-Schudel method (i.e., DE values) are treated as representative values indicating the degree of hydrolysis of the starch.
• the starch hydrolysate is selected from the group consisting of dextrin having a DE value of 2-5, indigestible dextrin having a DE value of 10-15, and mixtures thereof.
• dextrin having a DE value of 2-5 which may be used include Pinedex # 100 (trade name, manufactured by Matsutani Chemical Industry Co., Ltd.).
• indigestible dextrin having a DE value of 10-15 which may be used include Pinefiber (trade name, manufactured by Matsutani Chemical Industry Co., Ltd.).
• the bulking material may be added in an amount so as to be able to demonstrate the function of a bulking material, namely increasing the bulk of the sheet, and so as not to affect the flavor of the flavor inhaler.
• the amount of bulking material contained in the sheet is preferably 100-500 mass%, and more preferably 200-500 mass%, with respect to the mass of polysaccharide thickener.
• the amount of bulking material contained in the sheet may be calculated by using values of the amounts of bulking material and polysaccharide thickener which are blended in the starting material slurry.
• the bulking material By adding the bulking material to the starting material of the flavoring component-containing sheet, it is possible to stably produce the flavoring component-containing sheet under practical production conditions, even if the flavoring component-containing sheet has a composition with a low blending concentration of the flavoring component.
• the bulking material has the role of increasing the mass of dry matter in the starting material slurry and increasing the bulk of the sheet, so it is possible to shorten the drying time required until a sheet of the desired thickness is produced.
• the bulking material substantially does not increase the viscosity of the starting material slurry, so there are no impediments to the operations of kneading and spreading the starting material slurry.
• the flavoring component-containing sheet may furthermore comprise water. That is to say, the water contained in the starting material slurry may remain in the flavoring component-containing sheet after drying.
• the moisture content when water remains in the flavoring component-containing sheet is preferably less than 10 mass%, more preferably 3-9 mass%, and even more preferably 3-6 mass%, with respect to the total mass of the sheet.
• the moisture content of the sheet may be determined by using GC-TCD.
• the flavoring component-containing sheet may furthermore comprise a humectant.
• humectants which may be used include hyaluronic acid and magnesium chloride, etc.
• the flavoring component-containing sheet may furthermore comprise a colorant. Examples of colorants which may be used include cocoa, caramel, food dyes such as Blue No. 2, polyphenols such as chlorogenic acid, and melanoidin, etc.
• the flavoring component-containing sheet may have a thickness of 0.05-0.15 mm, for example, and may preferably have a thickness of 0.06-0.10 mm.
• An aqueous solution was prepared, comprising, in a mass ratio of 9:7:4: glycerol, hydroxypropyl cellulose (trade name: CELNY, manufactured by Nippon Soda Co., Ltd.), and plant fibers (trade name: Herbacel AQ Plus CF-D/100, manufactured by Sumitomo Pharma & Chemical Co., Ltd.).
• the aqueous solution was coated and dried on a nonwoven fabric (trade name: Taiko TCF, manufactured by Futamura Chemical Co., Ltd.), and an aerosol source support comprising approximately 30 mass% of glycerol per areal weight was obtained.
• the tobacco component-containing segment 5 of the heat-not-burn flavor inhaler 1 shown in fig. 1(a) was filled with 50 mg of alkali-pretreated tobacco granules, as the tobacco material 11.
• the content of the aerosol source (glycerol) contained in the heat-not-burn flavor inhaler was approximately 90 mg.
• the heat-not-burn flavor inhaler was inserted into the heating device 27 shown in fig. 2 and only the aerosol source-containing segment 4 was heated at 295°C. After this, the amount of each component contained in the smoke drawn in was measured by drawing from the mouthpiece portion. Using a smoking machine (trade name: SM450RH, manufactured by CERULEAN), the drawing was carried out once every 30 seconds, for 2 seconds at 55 mL per one time, for a total of 11 times. The amounts of TSNA (tobacco-specific nitrosamines), Carb (carbonyls), and VOC (volatile organic compounds) contained in the mainstream smoke obtained by drawing were measured by the respective methods below. The results are shown in Table 1.
• TSNA tobacco-specific nitrosamines
• Carb carbonyls
• VOC volatile organic compounds
• the mainstream smoke was trapped using an impinger (2,4-dinitrophenylhydrazine (DNPH), phosphoric acid, acetonitrile and water, 22°C), and after treatment with a Trizma base solution, the amounts of Carb were analyzed by means of HPLC (Agilent Technologies: 1290 Infinity II LC system). Acetaldehyde, acetone, propionaldehyde, crotonaldehyde, MEK (methyl ethyl ketone) and n-butylaldehyde were analyzed as Carb.
• DNPH 2,4-dinitrophenylhydrazine
• phosphoric acid phosphoric acid
• acetonitrile and water 22°C
• Trizma base solution Trizma base solution
• the aerosol-generating rod 2 of the heat-not-burn flavor inhaler 1 shown in fig. 1(a) was merged into one segment comprising both glycerol (aerosol source) and a tobacco component, rather than being split into two segments (aerosol source-containing segment 4 and tobacco component-containing segment 5).
• glycerol an agent that provides glycerol
• tobacco component a tobacco component that is split into two segments.
• a heat-not-burn flavor inhaler was prepared and the amounts of TSNA, Carb and VOC contained in the mainstream smoke were measured in the same way as in Example 1 The results are shown in Table 1.
• the embodiment includes the following aspects.

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• 2022
  • 2022-11-25 WO PCT/JP2022/043491 patent/WO2024111110A1/fr not_active Ceased
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  • 2022-11-25 CN CN202280101939.XA patent/CN120225077A/zh active Pending
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