EP4052593A1 - Tabakfüllstoff für tabakprodukte mit erwärmung ohne verbrennung, tabakprodukt mit erwärmung ohne verbrennung und elektrisch beheiztes tabakprodukt - Google Patents

Tabakfüllstoff für tabakprodukte mit erwärmung ohne verbrennung, tabakprodukt mit erwärmung ohne verbrennung und elektrisch beheiztes tabakprodukt Download PDF

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Publication number
EP4052593A1
EP4052593A1 EP20883647.8A EP20883647A EP4052593A1 EP 4052593 A1 EP4052593 A1 EP 4052593A1 EP 20883647 A EP20883647 A EP 20883647A EP 4052593 A1 EP4052593 A1 EP 4052593A1
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EP
European Patent Office
Prior art keywords
tobacco
heat
filler
burn
aerosol
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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
Application number
EP20883647.8A
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English (en)
French (fr)
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EP4052593A4 (de
Inventor
Kimitaka UCHII
Nobuyuki Ishikawa
Keisuke HARUKI
Kazuhiko Katayama
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Japan Tobacco Inc
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Japan Tobacco Inc
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Publication date
Application filed by Japan Tobacco Inc filed Critical Japan Tobacco Inc
Publication of EP4052593A1 publication Critical patent/EP4052593A1/de
Publication of EP4052593A4 publication Critical patent/EP4052593A4/de
Pending legal-status Critical Current

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    • 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
    • A24B15/12—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco
    • A24B15/14—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco made of tobacco and a binding agent not derived from tobacco
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B13/00—Tobacco for pipes, for cigars, e.g. cigar inserts, or for cigarettes; Chewing tobacco; Snuff
    • A24B13/02—Flakes or shreds of tobacco
    • 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
    • A24B15/12—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco
    • 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
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B3/00—Preparing tobacco in the factory
    • A24B3/14—Forming reconstituted tobacco products, e.g. wrapper materials, sheets, imitation leaves, rods, cakes; Forms of such products
    • 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
    • A24D1/20—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
    • A24D3/02—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
    • 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
    • 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
    • A24F40/465—Shape or structure of electric heating means specially adapted for induction heating
    • 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
    • A24F40/50—Control or monitoring
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/105—Induction heating apparatus, other than furnaces, for specific applications using a susceptor
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/105—Induction heating apparatus, other than furnaces, for specific applications using a susceptor
    • H05B6/108—Induction heating apparatus, other than furnaces, for specific applications using a susceptor for heating a fluid
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/20—Devices using solid inhalable precursors
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F47/00—Smokers' requisites not otherwise provided for

Definitions

  • the present invention relates to a tobacco filler for heat-not-burn tobacco products, a heat-not-burn tobacco product, and an electrically heated tobacco product.
  • Patent document 1 International Publication No. 2017/203686
  • Patent document 1 discloses that an acid having a first acid dissociation constant and a boiling point within specific ranges is added to a tobacco filler to reduce the formation of a salt with a smoke flavor component contained in the tobacco filler and to reduce a chemical odor.
  • the invention described in Patent document 1 utilizes an acid-base reaction.
  • a specific fatty acid that can be locally present on the surfaces of aerosol particles formed of a hydrophilic substance such as water or glycerin so that aerosol particles generated are stably present without volatilization until they are delivered into the oral cavity.
  • an object of the present invention is to provide a tobacco filler for heat-not-burn tobacco products that is capable of efficiently delivering a smoke flavor component contained in the tobacco filler to a user, and the like.
  • the inventors of the present invention have found that in a tobacco filler for heat-not-burn tobacco products that contains a tobacco material and an aerosol-source material, when the tobacco filler contains an aerosol stabilizer containing a saturated fatty acid and the proportion of a saturated fatty acid having 16 to 18 carbon atoms in lipids contained in the aerosol stabilizer is 50% by weight or more, the above object can be achieved.
  • the present invention is as follows.
  • the present invention can provide a tobacco filler for heat-not-burn tobacco products that is capable of efficiently delivering a smoke flavor component contained in the tobacco filler to a user, and the like.
  • the "heat-not-burn tobacco product” refers to a tobacco capable of delivering a smoke flavor component contained in a tobacco material into the oral cavity of a user by, unlike conventional cigarettes, heating without involving combustion.
  • the "tobacco raw material” refers to a raw material that is not used as a tobacco filler as it is, such as a lamina, midrib, or stem of tobacco leaves.
  • the "tobacco material” refers to a material constituting a tobacco filler and is an article, for example, a “tobacco sheet”, “tobacco granule”, “tobacco shred”, or “tobacco fine powder” described later, produced by using the "tobacco raw material”.
  • a tobacco filler for heat-not-burn tobacco products contains a tobacco material and an aerosol-source material, in which an aerosol stabilizer containing lipids is added to the tobacco filler, and a proportion of a saturated fatty acid having 16 to 18 carbon atoms in the lipids contained in the aerosol stabilizer is 50% by weight or more.
  • the object of the present invention can be achieved by incorporating a saturated fatty acid having 16 to 18 carbon atoms in this proportion.
  • the proportion of the saturated fatty acid having 16 to 18 carbon atoms in the lipids is preferably 80% by weight or more, more preferably 90% by weight or more, and particularly preferably 99% by weight or more.
  • Lipids other than the saturated fatty acid having 16 to 18 carbon atoms are not particularly limited. However, the content of the lipids other than saturated fatty acid having 16 to 18 carbon atoms is preferably minimized.
  • the solubility of saturated fatty acid having 16 to 18 carbon atoms in water or glycerin that mainly forms an aerosol is extremely low and is considered to affect covering of aerosol particles.
  • lipids having high solubility are mixed in a predetermined amount or more, the original covering effect achieved by the saturated fatty acid having 16 to 18 carbon atoms may not be sufficiently achieved. Therefore, the solubility of each lipid and the proportion of lipids having low solubility and lipids having high solubility in the case of a mixture of a plurality of lipids are important as indices for estimating the effect.
  • aerosol stabilizer as used herein is a substance for maintaining stability in air of aerosol particles generated from heat-not-burn tobacco products and contains specific lipids as described above.
  • the aerosol stabilizer containing a saturated fatty acid may contain other components in addition to the lipids, the content of the lipids in the aerosol stabilizer is preferably 90% by weight or more, more preferably 95% by weight or more, and particularly preferably 99% by weight or more.
  • the solubility of a lipid in glycerin is 0.13 mg/g or less, preferably 0.12 mg/g or less, and more preferably 0.11 mg/g. On the other hand, the solubility may be 0.01 mg/g or more.
  • the "solubility in glycerin" is determined as described below.
  • the solubility in glycerin is most preferably measured by a method for quantitatively determining a fatty acid dissolved in 2 g of glycerin. Specifically, after an excessive amount of a fatty acid is added to glycerin, the mixture is separated into two layers, for example, by standing at ordinary temperature for 24 hours or more or by centrifugal separation, 100 mg aliquot of glycerin is taken, and transferred and dissolved into 2 mL of methanol, and the amount of fatty acid dissolved in glycerin is quantitatively determined by gas chromatograph-flame ionized detector (GC-FID) or gas chromatograph-mass spectrometer (GC-MS).
  • GC-FID gas chromatograph-flame ionized detector
  • GC-MS gas chromatograph-mass spectrometer
  • saturated fatty acids having 16 to 18 carbon atoms examples include palmitic acid, margaric acid, and stearic acid. Of these, palmitic acid, stearic acid, and a mixture thereof are preferred.
  • a mixture of saturated fatty acids having 16 to 18 carbon atoms may be used, or each of the saturated fatty acids may be used alone.
  • palmitic acid and stearic acid be respectively used alone.
  • Lipids containing only saturated fatty acids having 16 to 18 carbon atoms, and an aerosol stabilizer containing only saturated fatty acids having 16 to 18 carbon atoms can be used.
  • the amount of the aerosol stabilizer added to the tobacco filler may be 0.1% by weight or more and 5.0% by weight or less and is more preferably 0.5% by weight or more and 2.0% by weight or less, more preferably 0.5% by weight or more and 1.5% by weight or less, and particularly preferably 0.75% by weight or more and 1.25% by weight or less relative to the dry weight of the total amount of the tobacco filler.
  • an aerosol generated during use can be stably present and has aerosol physical properties with stability close to that of cigarettes, and thus a smoke flavor similar to that of cigarettes is obtained.
  • the amount of saturated fatty acids having 16 to 18 carbon atoms added to the tobacco filler is preferably 0.1% by weight or more and 2.0% by weight or less, more preferably 0.5% by weight or more and 1.5% by weight or less, and particularly preferably 0.75% by weight or more and 1.25% by weight or less relative to the dry weight of the total amount of the tobacco filler.
  • the amount of the aerosol stabilizer added and the amount of saturated fatty acids having 16 to 18 carbon atoms added may be within the same range. This means that the aerosol stabilizer may be composed of lipids, and all the lipids may be saturated fatty acids having 16 to 18 carbon atoms.
  • the tobacco filler for heat-not-burn tobacco products include a formed body composed of a tobacco material including tobacco shreds (hereinafter, also referred to as a first tobacco filler), a formed body of a tobacco material composed of a tobacco sheet described below (hereinafter, also referred to as a second tobacco filler), and a tobacco filler composed of granules prepared by using a tobacco raw material (hereinafter, a third tobacco filler).
  • a first tobacco filler a formed body composed of a tobacco material including tobacco shreds
  • a second tobacco filler a formed body of a tobacco material composed of a tobacco sheet described below
  • a tobacco filler composed of granules prepared by using a tobacco raw material hereinafter, a third tobacco filler
  • Each of these formed bodies may have a rod-like shape.
  • a longitudinal direction of a heat-not-burn tobacco product is the direction indicated by h in Fig. 1 .
  • the longitudinal direction of the heat-not-burn tobacco product may be considered to be the same as the longitudinal direction of a tobacco rod.
  • the longitudinal direction is defined as the direction indicated by h, as described above. Accordingly, even when w ⁇ h, the direction indicated by h is referred to as the longitudinal direction for the sake of convenience.
  • the shape of the bottom surface is not limited and may be, for example, polygonal, rounded polygonal, circular, or elliptic.
  • the width w is the diameter when the bottom surface is circular, the major axis when the bottom surface is elliptic, and the diameter of a circumscribed circle or the major axis of a circumscribed ellipse when the bottom surface is polygonal or rounded polygonal. For example, in the embodiment illustrated in Fig. 1 , since the bottom surface is circular, the diameter thereof can be determined.
  • the diameter is the width w
  • the length orthogonal to the width w is the height h.
  • the height h of the tobacco filler constituting the tobacco rod is preferably about 12 mm or more and about 70 mm or less, and the width w thereof is preferably about 4 mm or more and about 9 mm or less.
  • the tobacco material constituting the first filler is not particularly limited, and a material obtained by subjecting a publicly known tobacco raw material such as a lamina or a midrib to a process such as shredding or crushing can be used.
  • the material may be one obtained by crushing dried tobacco leaves to an average particle size of about 20 ⁇ m or more and about 200 ⁇ m or less to provide a uniformized product, processing the uniformized product into a sheet (hereinafter, also simply referred to as a uniformized sheet), and shredding the sheet.
  • the width of the tobacco shreds is preferably about 0.5 mm or more and about 2.0 mm or less from the viewpoint of forming into a tobacco rod.
  • the content of the tobacco filler in the formed tobacco rod may be 200 mg/rod or more and 800 mg/rod or less, and is preferably 250 mg/rod or more and 600 mg/rod or less.
  • various types of tobacco can be used. Examples thereof include flue-cured tobacco, burley tobacco, oriental tobacco, domestic tobacco, and other leaves such as nicotiana tabacum tobacco and nicotiana rustica tobacco, and mixtures thereof.
  • the aforementioned various types of leaves may be appropriately blended so as to provide a desired taste.
  • the first method is a method including making a sheet by using a papermaking process.
  • the second method is a method including mixing an appropriate solvent such as water with crushed tobacco leaves so as to be uniform, subsequently casting the resulting uniform mixture thinly on a metal sheet or a metal sheet belt, and drying the uniform mixture to make a cast sheet (slurry sheet).
  • the third method is a method including mixing an appropriate solvent such as water with crushed tobacco leaves to prepare a uniform mixture, and extruding the uniform mixture into a sheet to make a rolled sheet. Details of the types of the uniformized sheet are disclosed in “ Tabako-no-Jiten (Encyclopedia of Tobacco) by Tobacco Academic Studies Center, March 31, 2009 ".
  • the moisture content of the tobacco filler may be 10% by weight or more and 15% by weight or less and is preferably 11% by weight or more and 13% by weight or less relative to the total amount of the tobacco filler. Such a moisture content reduces the occurrence of stains in the wrapping paper and achieves good machinability during the production of the tobacco rod.
  • the tobacco shreds contained in the first tobacco filler may have any size and may be prepared by any method. For example, dried tobacco leaves shredded to a width of 0.5 mm or more and 2.0 mm or less may be used.
  • the product used may be obtained by crushing dried tobacco leaves to an average particle size of about 20 ⁇ m or more and about 200 ⁇ m or less to provide a uniformized product, processing the uniformized product into a sheet, and shredding the sheet to a width of 0.5 mm or more and 2.0 mm or less.
  • the first tobacco filler contains an aerosol-source material that generates an aerosol.
  • the type of the aerosol-source material is not particularly limited, and substances extracted from various natural products and/or components of the substances can be selected depending on the use.
  • Examples of the aerosol-source material include glycerin, propylene glycol, triacetin, 1,3-butanediol, and mixtures thereof.
  • the content of the aerosol-source material in the first tobacco filler is not particularly limited. From the viewpoint of sufficiently generating an aerosol and imparting a good smoke flavor, the content is typically 5% by weight or more, preferably 10% by weight or more, and typically 50% by weight or less, preferably 15% by weight or more and 25% by weight or less relative to the total amount of the tobacco filler.
  • the first tobacco filler may contain a flavor.
  • the type of the flavor is not particularly limited. From the viewpoint of imparting a good smoke flavor, examples of the flavor 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, chamo
  • the content of the flavor in the first tobacco filler is not particularly limited. From the viewpoint of imparting a good smoke flavor, the content is typically 10,000 ppm or more, preferably 20,000 ppm or more, more preferably 25,000 ppm or more, and typically 50,000 ppm or less, preferably 40,000 ppm or less, and more preferably 33,000 ppm or less.
  • the filling density in the first tobacco filler is not particularly limited. From the viewpoints of ensuring the performance of the heat-not-burn tobacco product and imparting a good smoke flavor, the filling density is typically 250 mg/cm 3 or more, preferably 320 mg/cm 3 or more, and typically 800 mg/cm 3 or less, preferably 600 mg/cm 3 or less.
  • the first tobacco filler described above is wrapped with the wrapping paper so as to be disposed inside, thus forming a tobacco rod.
  • the tobacco material that constitutes the tobacco filler may be arranged at random, or the tobacco material may be arranged in the longitudinal direction of the tobacco rod, that is, in the form of a strand.
  • the second tobacco filler is composed of at least one tobacco sheet. If the second tobacco filler is formed of two or more tobacco sheets, the tobacco sheets are concentrically arranged. In the present invention, being concentrically arranged means that all the tobacco sheets are arranged such that the centers thereof are located at substantially the same position.
  • the sheet in the present invention refers to a shape having a pair of substantially parallel principal surfaces and side surfaces.
  • the sheet is preferably produced by a papermaking process.
  • Examples of the second filler include one constituting a formed body obtained by winding a single tobacco sheet in a direction orthogonal to the longitudinal direction of the heat-not-burn tobacco product, and one constituting a formed body obtained by concentrically winding a plurality of tobacco sheets.
  • the second filler may be the so-called gathered sheet that forms a filler obtained as a result of folding one or more tobacco sheets a plurality of times parallel to the longitudinal direction of the heat-not-burn tobacco product.
  • Examples of a sheet base material include tobacco materials such as tobacco powders.
  • the sheet base material is preferably a tobacco material.
  • the tobacco sheet is preferably obtained by carrying, on a base material sheet composed of a tobacco material, a component that can generate a flavor as needed.
  • the tobacco sheet generates an aerosol upon heating.
  • An aerosol source such as a polyol, e.g., glycerin, propylene glycol, or 1,3-butanediol is added as an aerosol-source material.
  • the amount of the aerosol-source material added is preferably 5% by weight or more and 50% by weight or less, more preferably 15% by weight or more and 25% by weight or less relative to the dry weight of the tobacco sheet.
  • a tobacco sheet serving as a material before being constituted as a formed body will be described.
  • the tobacco sheet can be appropriately produced by a publicly known method such as papermaking, slurrying, or rolling.
  • the uniformized sheet that has been described in the first tobacco filler can also be used.
  • the tobacco sheet can be produced by a method including the following steps. 1) Dried tobacco leaves are coarsely crushed and extracted with water to separate the leaves into a water extract and a residue. 2) The water extract is concentrated by drying under reduced pressure. 3) Pulp is added to the residue, and the mixture is processed into fibers with a refiner and then formed into a sheet. 4) A concentrate of the water extract is added to the formed sheet and dried to provide a tobacco sheet. In this case, a step of removing some components such as nitrosamines may be performed (refer to Japanese Unexamined Patent Application Publication (Translation of PCT Application) No. 2004-510422 ).
  • the tobacco sheet can be produced by a method including the following steps. 1) Water, pulp, and a binder are mixed with crushed tobacco leaves. 2) The mixture is spread out (cast) in a thin layer and dried. In this case, a step of removing removing some components such as nitrosamines by irradiating the slurry prepared by mixing water, pulp, and a binder with crushed tobacco leaves with ultraviolet rays or X-rays may be performed.
  • a nonwoven fabric-like tobacco sheet produced by a method including the following steps may be used. 1) Powdery or granular tobacco leaves are mixed with a binder. 2) The mixture is sandwiched between nonwoven fabrics. 3) The resulting laminate is formed into a predetermined shape by thermal fusion bonding to obtain a nonwoven fabric-like tobacco sheet.
  • the type of raw-material tobacco leaves used in the methods described above may be the same as that described for the first filler.
  • the composition of the tobacco sheet is not particularly limited, and, for example, the content of the tobacco raw materials (tobacco leaves) is preferably 50% by weight or more and 95% by weight or less relative to the total weight of the tobacco sheet.
  • the tobacco sheet may contain a binder, and examples of such a binder include guar gum, xanthan gum, CMC (carboxymethylcellulose), and CMC-Na (sodium salt of carboxymethylcellulose).
  • the amount of binder is preferably 1% by weight or more and 20% by weight or less relative to the total weight of the tobacco sheet.
  • the tobacco sheet may further contain other additives. Examples of the additives include fillers such as pulp.
  • a plurality of tobacco sheets are used in the present invention. All the tobacco sheets may have the same composition or physical properties, or some or all of the tobacco sheets may have different compositions or physical properties.
  • the second tobacco filler When the second tobacco filler is formed of a single tobacco sheet, the second tobacco filler can be produced by inserting the tobacco sheet into a winding tube, and forming the tobacco sheet by winding in an overlapping manner.
  • the second tobacco filler When the second tobacco filler is formed of a plurality of tobacco sheets, the second tobacco filler can be produced by providing a plurality of tobacco sheets having different widths, preparing a laminate of the tobacco sheets such that the width thereof is reduced from the bottom to the top, inserting the laminate into a winding tube, and forming the laminate by winding. With this production method, one or a plurality of tobacco sheets extend in the longitudinal direction and are concentrically arranged around the longitudinal axis.
  • a through-opening extending as the opening in the longitudinal direction is formed between the longitudinal axis and the innermost tobacco sheet.
  • the preparation is preferably performed such that a non-contact portion is formed between adjacent tobacco sheets after forming by winding.
  • a non-contact portion (gap) is present between tobacco sheets, where the tobacco sheets are not in contact with each other, a flavor passage can be ensured to increase the delivery efficiency of a flavor component.
  • heat from a heater can be transferred to outer tobacco sheets through a contact portion between the tobacco sheets, high heat transfer efficiency can be ensured.
  • the laminate formed body may be prepared by performing lamination without bonding the entire surfaces of adjacent tobacco sheets together, performing lamination with adjacent tobacco sheets partially bonded together, or performing lamination with adjacent tobacco sheets entirely or partially bonded together lightly such that they are separated after being formed by winding.
  • the wrapping paper may be disposed at the bottom of the laminate (formed body).
  • an opening can be formed by forming the second tobacco filler with a cylindrical dummy, such as a mandrel, placed at the top of the laminate (formed body) and then removing the dummy.
  • a cylindrical dummy such as a mandrel
  • each tobacco sheet is not particularly limited, and in terms of the balance between heat transfer efficiency and strength, the thickness is preferably 200 ⁇ m or more and 600 ⁇ m or less.
  • the thicknesses of the tobacco sheets may be the same or different.
  • the number of tobacco sheets constituting the second tobacco filler is not particularly limited as long as the number is one or more, and may be, for example, one, two, three, four, five, or six.
  • the third tobacco filler is composed of tobacco granules.
  • Raw materials of the third tobacco filler are not particularly limited but may be (a) a tobacco material, (b) moisture, (c) at least one pH adjuster selected from the group consisting of potassium carbonate and sodium hydrogen carbonate, (d) at least one binder selected from the group consisting of pullulan and hydroxypropylcellulose, and (e) an aerosol-source material.
  • the tobacco material (component (a)) contained in the third tobacco filler includes crushed tobacco leaves, crushed tobacco sheets, and the like.
  • the types of tobacco include burley tobacco, flue-cured tobacco, and oriental tobacco.
  • the tobacco material is preferably crushed to a size of 200 ⁇ m and 300 ⁇ m or less.
  • a raw material mixture of the third tobacco filler contains the tobacco material typically in an amount of 20% by weight or more and 80% by weight or less.
  • the moisture (component (b)) contained in the third tobacco filler is a component for maintaining the integrity of tobacco granules.
  • the raw material mixture of the third tobacco filler contains the moisture typically in an amount of 3% by weight or more and 13% by weight or less.
  • the third tobacco filler may contain the moisture typically in such an amount that the weight loss on drying will be 5% by weight or more and 17% by weight or less.
  • the weight loss on drying refers to a change in weight before and after drying of a sample, the drying being performed in such a manner that a portion of the sample is collected for measurement, and the sample is completely dried (for example, dried at a constant temperature (105°C) for 15 minutes) by evaporating all the moisture in the collected sample.
  • the pH adjuster (component (c)) contained in the third tobacco filler is composed of potassium carbonate, sodium hydrogen carbonate, or a mixture thereof.
  • the pH adjuster adjusts the pH of the third tobacco filler to the alkaline side to facilitate the release of the smoke flavor component contained in the third tobacco filler from the tobacco granules, thus providing a smoke flavor that may be satisfactory to the user.
  • the raw material mixture of the third tobacco filler may contain the pH adjuster typically in an amount of 5% by weight or more and 20% by weight or less.
  • the binder (component (d)) contained in the third tobacco filler is a component that binds tobacco granule components together to maintain the integrity of the tobacco granules.
  • the binder is composed of pullulan, hydroxypropylcellulose (HPC), or a mixture thereof.
  • the raw material mixture of the third tobacco filler may contain the binder typically in an amount of 0.5% by weight or more and 15% by weight or less.
  • the aerosol-source material (component (e)) contained in the third tobacco filler is a component that generates an aerosol.
  • the aerosol-source material is composed of a polyhydric alcohol, and examples of the polyhydric alcohol may include glycerin, propylene glycol, sorbitol, xylitol, and erythritol. These polyhydric alcohols may be used alone or in combination of two or more thereof.
  • the content of the aerosol-source material in the raw material mixture of the third tobacco filler may be 5% by weight or more and 15% by weight or less.
  • additional components include (f) a flavoring material (solid or liquid) other than smoke flavor components.
  • flavoring materials include sugar (such as sucrose and fructose), a cocoa powder, a carob powder, a coriander powder, a licorice powder, an orange peel powder, a rose hip powder, a chamomile flower powder, a lemon verbena powder, a peppermint powder, a leaf powder, a spearmint powder, a black tea powder, and menthol.
  • the raw material mixture of the third tobacco filler may contain the flavoring material typically in an amount of 0.5% by weight or more and 30% by weight or less.
  • the flavoring material may be added to the components (a), (b), (c), (d), and (e) by being directly kneaded with these components, or may be added to these components by causing the flavoring material to be accommodated in a publicly known clathrate host compound such as cyclodextrin to prepare a clathrate compound, and then kneading the clathrate compound with the above components.
  • the raw material mixture of the third tobacco filler may contain the component (a) typically in an amount of about 33% by weight or more (and about 90% by weight or less).
  • the third tobacco filler is obtained by mixing the components (a), (c), (d), and (e) and optionally the component (f), adding the component (b) to the resulting mixture and kneading the mixture, granulating the resulting kneaded product with a wet extrusion granulator (into a long columnar shape), and then sizing the granules into a short columnar shape or a spherical shape.
  • the average particle size (D50) of the resulting tobacco granules is typically 0.2 mm or more and 1.2 mm or less, preferably 0.2 mm or more and 1.0 mm or less, and more preferably 0.2 mm or more and 0.8 mm or less.
  • the kneaded product is preferably extruded at a pressure of 2 kN or more at an ambient temperature.
  • the temperature of the kneaded product at the outlet of the extrusion granulator rises rapidly in an instantaneously manner from the ambient temperature to, for example, 90°C or higher and 100°C or lower, and moisture and volatile components evaporate by 2% by weight or more and 4% by weight or less.
  • the water blended for making the kneaded product can be used in an amount larger than the desired amount of moisture in tobacco granules, which are the final product, by the amount of evaporation.
  • the tobacco granules obtained by extrusion granulation may be further dried, as needed, for moisture adjustment. For example, if the weight loss on drying of the tobacco granules obtained by extrusion granulation is measured and the weight loss is higher than a desired weight loss on drying (e.g., 5% by weight or more and 17% by weight or less), the tobacco granules may be further dried to achieve the desired weight loss on drying.
  • the drying conditions (temperature and time) for achieving the desired weight loss on drying can be set on the basis of predetermined drying conditions (temperature and time) that are required to reduce the weight loss on drying by a predetermined value.
  • the third tobacco filler may be composed only of the tobacco granules described above but may further contain an additional tobacco material.
  • the additional tobacco material is typically composed of shreds or a fine powder of tobacco leaves.
  • the additional tobacco material can be used as a mixture with the tobacco granules according to an embodiment of the present invention.
  • a method for producing a tobacco filler according to an embodiment of the present invention relates to a method for producing any of the first to third tobacco fillers described above.
  • the method for producing a tobacco filler according to an embodiment of the present invention includes, in each of the cases of the first to third tobacco fillers, a step of adding, to a tobacco material before forming or after forming, an aerosol stabilizer which contains lipids and in which a proportion of a saturated fatty acid having 16 to 18 carbon atoms in the lipids is 50% by weight or more.
  • the aerosol stabilizer When the aerosol stabilizer is added to a tobacco material before forming, the aerosol stabilizer can be uniformly added to the tobacco material depending on the form of the addition.
  • the aerosol stabilizer can be uniformly added to the tobacco material before forming by mixing the aerosol stabilizer with another material such as crushed tobacco leaves, shreds, or a crushed product of a sheet tobacco in the preparation of the tobacco filler.
  • the aerosol stabilizer can be added to the tobacco material by mixing the aerosol stabilizer with a tobacco material (such as crushed tobacco leaves) serving as a raw material in the preparation of the tobacco sheet.
  • a tobacco material such as crushed tobacco leaves
  • the aerosol stabilizer can be added to the tobacco material before forming by mixing the aerosol stabilizer with the concentrate of the water extract in step 4), and adding the mixture to the formed sheet.
  • the aerosol stabilizer in addition to water, pulp, a binder, and crushed tobacco leaves, the aerosol stabilizer can be uniformly added to the tobacco material before forming in step 1).
  • the aerosol stabilizer can be uniformly added to the tobacco material before forming by further mixing the aerosol stabilizer when powdery or granular tobacco leaves are mixed with a binder in step 1).
  • Uniformly adding the aerosol stabilizer to the tobacco material before forming is preferred because the smoke flavor is stabilized.
  • the aerosol stabilizer When the aerosol stabilizer is added to a tobacco material after forming, the aerosol stabilizer can be added to the surface of the tobacco material.
  • An example of the method includes spraying or applying the aerosol stabilizer onto the surface of a formed body of a tobacco material by appropriate means. Addition of the aerosol stabilizer to the surface of the tobacco material is preferred because the aerosol stabilizer can be transferred into an aerosol without considering internal diffusion in the tobacco material, and the transfer ratio increases.
  • the aerosol stabilizer can be added to the surface of the tobacco material formed into a rod shape (granules in the case of the third tobacco filler) by the method described above.
  • the aerosol stabilizer can be added, by the method described above, to the surface of a rod-like tobacco material formed by winding one or more tobacco sheets.
  • a tobacco filler in the form of (1) or (2) below can be prepared through the steps described above.
  • Each of the tobacco fillers in the form of (1) or (2) above can be used in a heat-not-burn tobacco product by further winding a formed body thereof with wrapping paper.
  • the formed tobacco filler is wrapped with wrapping paper to prepare a tobacco rod provided for a heat-not-burn tobacco product.
  • a publicly known wrapping device can be used for the wrapping.
  • the structure of the wrapping paper is not particularly limited, and typical wrapping paper can be used.
  • base paper used for the wrapping paper may be cellulose fiber paper, and more specifically, may be hemp, wood, or a mixture thereof.
  • wrapping paper as used herein is used to wrap a tobacco filler.
  • the wrapping paper may contain a filler, and the type of the filler is not limited.
  • the type of the filler is not limited.
  • examples thereof include metal carbonates such as calcium carbonate and magnesium carbonate, metal oxides such as titanium oxide and aluminum oxide, metal sulfates such as barium sulfate and calcium sulfate, metal sulfides such as zinc sulfide, quartz, kaolin, talc, diatomaceous earth, and gypsum.
  • metal carbonates such as calcium carbonate and magnesium carbonate
  • metal oxides such as titanium oxide and aluminum oxide
  • metal sulfates such as barium sulfate and calcium sulfate
  • metal sulfides such as zinc sulfide
  • quartz kaolin
  • talc diatomaceous earth
  • gypsum gypsum
  • the blending proportion of the filler in the wrapping paper is not particularly limited and is typically 1% by weight or more and 50% by weight or less, preferably 5% by weight or more and 45% by weight or less, more preferably 10% by weight or more and 42% by weight or less, and particularly preferably 20% by weight or more and 40% by weight or less.
  • the content of calcium carbonate can be determined by ash measurement or by, after extraction, quantitatively determining the amount of calcium ions.
  • the proportion is lower than the lower limit of the range, the wrapping paper is likely to burn. If the proportion is higher than the upper limit, the strength of the wrapping paper significantly decreases, which may result in degradation of the wrapping performance.
  • auxiliary agents other than the base paper and the filler may be added to the wrapping paper, and, for example, a water resistance improver can be added to improve water resistance.
  • water resistance improvers include wet paper-strengthening agents (WS agents) and sizing agents.
  • wet paper-strengthening agents include urea formaldehyde resins, melamine formaldehyde resins, and polyamide epichlorohydrin (PAE).
  • sizing agents include rosin soap, alkyl ketene dimers (AKD), alkenyl succinic anhydrides (ASA), and highly saponified polyvinyl alcohols having a degree of saponification of 90% or more.
  • a paper-strengthening agent may be added as the auxiliary agent, and examples thereof include polyacrylamide, cationic starch, oxidized starch, CMC, polyamide epichlorohydrin resins, and polyvinyl alcohols.
  • oxidized starch is known to improve air permeability when used in a very small amount ( Japanese Unexamined Patent Application Publication No. 2017-218699 ).
  • the wrapping paper may be subjected to coating as appropriate.
  • a coating agent may be added to at least one of two surfaces, namely, a front surface and a back surface, of the wrapping paper.
  • the coating agent is not particularly limited but is preferably a coating agent that can form a film on a surface of paper to reduce liquid permeability.
  • alginic acid and salts thereof e.g., sodium salts
  • polysaccharides such as pectin
  • cellulose derivatives such as ethylcellulose, methylcellulose, carboxymethylcellulose, and nitrocellulose
  • starch and derivatives thereof e.g., ether derivatives such as carboxymethyl starch, hydroxyalkyl starch, and cationic starch, and ester derivatives such as starch acetate, starch phosphate, and starch octenyl succinate.
  • the basis weight of the wrapping paper is typically 20 g/m 2 or more and 45 g/m 2 or less, and preferably 20 g/m 2 or more and 45 g/m 2 or less. Within this range, suitable strength and wrapping performance can be maintained.
  • the air permeability of the wrapping paper is typically 0 Coresta units or more and 120 Coresta units or less, and preferably 5 Coresta units or more and 100 Coresta units or less, and more preferably 10 Coresta units or more and 80 Coresta units or less. Within this range, suitable strength and smoke flavor can be maintained.
  • One embodiment of a heat-not-burn tobacco product according to an embodiment of the present invention has, for example, a configuration illustrated in Fig. 1 .
  • a heat-not-burn tobacco product 1 illustrated in Fig. 1 includes a tobacco rod formed of a tobacco filler 10 and wrapping paper (not illustrated) that wraps around the tobacco filler 10, and a mouthpiece portion 11 constituting an end portion opposite to the tobacco rod.
  • the tobacco rod and the mouthpiece portion are connected together with wrapping paper 12 (tipping paper in Fig. 1 ) that is the same as or different from the wrapping paper that wraps around the tobacco filler.
  • the embodiment illustrated in Fig. 1 is one in which the first tobacco filler described above is used as the tobacco filler.
  • Shreds obtained by shredding tobacco leaves or by shredding a uniformized sheet: for example, 0.5 mm or more and 2.0 mm or less in width
  • the shreds may be processed into substantially the same length as the length of the tobacco rod and may be arranged in the same direction as the longitudinal direction of the tobacco rod, thus filling the tobacco rod.
  • the mouthpiece portion 11 may include an aerosol cooling portion (also simply referred to as a cooling portion) 13 and a filter portion 14. Tipping paper 12 is provided as wrapping paper for connecting these portions.
  • the mouthpiece portion 11 is composed of two segments in Fig. 1
  • the mouthpiece portion 11 may be composed of a single segment, three segments, or four or more segments.
  • the segments constituting the mouthpiece portion may be configured to include both the cooling portion and the filter portion as illustrated in Fig. 1 , or may be configured to include only one of them.
  • a support portion may be disposed immediately downstream of the tobacco rod and between the tobacco rod and the cooling portion 13. When the support portion is provided, the support portion is disposed in contact with the rear end of the tobacco rod.
  • the support portion may be, for example, a hollow cellulose acetate tube.
  • the support portion may be a circular columnar cellulose acetate fiber bundle through which a center hole is formed at the center of the cross section thereof.
  • the support portion may be a metallic mesh with a mesh opening of, for example, 5 mesh or more and 35 mesh or less.
  • the support portion functions as an element for preventing the tobacco filler in the heat-not-burn tobacco product from being pushed to the downstream side toward the cooling portion 13.
  • the support portion 13 preferably has a low airflow resistance and a low aerosol filtration performance in addition to the function of preventing the tobacco filler from being pushed to the downstream side.
  • the support portion also functions as a spacer for spacing the cooling portion 13 of the heat-not-burn tobacco product apart from the tobacco rod.
  • the vapor comes in contact with air in the cooling portion 13 and is cooled and liquefied to generate an aerosol.
  • the heat-not-burn tobacco product 1 may have, in part of the cooling portion 13 and the wrapping paper 12 (tipping paper) that wraps around the cooling portion 13, a perforation (not illustrated) for taking in air from the outside.
  • a perforation for taking in air from the outside.
  • the presence of such a perforation allows air to flow from the outside to the inside of the cooling portion 13 during use, and consequently, the vapor generated by heating the tobacco rod and containing the aerosol-source material and the tobacco flavor component comes in contact with air from the outside and is liquefied by a decrease in temperature to more reliably generate an aerosol.
  • the perforation preferably has a diameter of 100 ⁇ m or more and 1,000 ⁇ m or less.
  • the perforation is preferably substantially circular or substantially elliptical in shape.
  • the diameter described above represents the length of the major axis.
  • the number of perforations may be one or two or more.
  • the perforations are preferably arranged in a row on the circumference of the wrapping paper 12 (tipping paper).
  • the cooling portion 13 may be, for example, a member obtained by processing thick paper into a cylindrical shape.
  • the cylinder has a hollow space therein, and the vapor containing the aerosol-source material and the tobacco flavor component comes in contact with air in the hollow space and is cooled.
  • the vapor in the hollow space also comes in contact with outside air to further enhance the cooling effect.
  • the inside of the cylinder may be filled with a gathered sheet-like member formed of paper, a polymer film, metal foil, or the like. In this case, the vapor can be cooled by using the specific heat of the member.
  • the filter portion 14 may be obtained by, for example, using a cellulose acetate tow as a material.
  • the single yarn fineness and the total fineness of the cellulose acetate tow are not particularly limited. In the case of the filter portion with a circumference of 22 mm, the single yarn fineness is preferably 5 g/9000 m or more and 12 g/9000 m or less, and the total fineness is preferably 12000 g/9000 m or more and 30000 g/9000 m or less.
  • the fibers of the cellulose acetate tow may have a Y-shaped cross section or an R-shaped cross section. In the case of a filter filled with cellulose acetate tows, triacetin may be added in an amount of 5% by weight or more and 10% by weigh or less relative to the weight of the cellulose acetate tow to improve filter hardness.
  • the filter portion 14 may be formed of the so-called paper filter produced from pulp.
  • the filter portion 14 is composed of a single segment in Fig. 1
  • the filter portion 14 may be composed of a plurality of segments.
  • an embodiment of the filter portion 14 may include a hollow segment on the upstream side and a segment having an inhalation cross section filled with cellulose acetate tows on the downstream side (i.e., at an inhalation end for the user). This embodiment prevents unnecessary loss of the generated aerosol and provides a good appearance of the heat-not-burn tobacco product.
  • the adjustment of the airflow resistance and the addition of additives can be designed as appropriate.
  • the material of the wrapping paper 12 is not particularly limited and, for example, paper formed of typical vegetable fibers (pulp), a sheet using polymer-based (such as polypropylene, polyethylene, or nylon) chemical fibers, a polymer-based sheet, or metal foil such as aluminum foil can be used.
  • the thickness of the wrapping paper 12 is not particularly limited but is typically 30 ⁇ m or more, and more preferably 35 ⁇ m or more from the viewpoints of the amount of aerosol delivered and the production suitability. On the other hand, the thickness is typically 150 ⁇ m or less, and preferably 140 ⁇ m or less.
  • the basis weight of the wrapping paper 12 is not particularly limited but is typically 30 g/m 2 or more, and preferably 35 g/m 2 or more from the viewpoints of the amount of aerosol delivered and the production suitability. On the other hand, the basis weight is typically 150 g/m 2 or less, and preferably 140 g/m 2 or less.
  • the air permeability of the wrapping paper is not particularly limited but is preferably 10 Coresta units or less from the viewpoints of the amount of aerosol delivered and the production suitability.
  • the wrapping paper may be fixed with, for example, a vinyl acetate-based adhesive after being wrapped around the tobacco rod, the cooling portion 13, the filter portion 14, and the support portion, as needed.
  • the length of the heat-not-burn tobacco product 1 in the longitudinal direction is preferably 40 mm or more and 100 mm or less, more preferably 40 mm or more and 80 mm or less, and still more preferably 45 mm or more and 60 mm or less.
  • the circumference of the heat-not-burn tobacco product is preferably 15 mm or more and 25 mm or less, more preferably 17 mm or more and 24 mm or less, and still more preferably 21 mm or more and 23 mm or less.
  • the tobacco rod may have a length of about 12 mm
  • the cooling portion may have a length of about 20 mm
  • the support portion may have a length of about 8 mm
  • the filter portion may have a length of about 7 mm.
  • the lengths of these segments may be appropriately changed depending on, for example, the production suitability and the level of quality required.
  • a heat-not-burn tobacco product may include a bowl-shaped container having a through-hole in the bottom surface thereof, the tobacco filler that fills the container, and a lid covering the upper surface of the container and having a hole-forming part that forms a through-hole in use and a heater.
  • the shape of the container is not particularly limited but is preferably a shape that can be inserted in a recess formed in a housing of an electrically heated tobacco product described later.
  • the container may have a tapered shape in which the side surface is inclined toward the bottom surface.
  • the through-hole formed in the bottom surface has such a diameter that the tobacco filler does not leak to the outside.
  • the container may be filled with the first tobacco filler or second tobacco filler described above.
  • An electrically heated tobacco product includes an electrically heating device including a heater member, a battery unit that serves as a power source for the heater member, and a control unit for controlling the heater member; and the heat-not-burn tobacco product according to the first embodiment, the heat-not-burn tobacco product being configured to be inserted so as to be in contact with the heater member.
  • the embodiment of the electrically heated tobacco product may be an embodiment in which an outer peripheral surface of a heat-not-burn tobacco product is heated, as illustrated in Fig. 2 , or an embodiment in which heating is performed from the inside of a tobacco rod portion of a heat-not-burn tobacco product, as illustrated in Fig. 3 .
  • Air introduction holes are provided in electrically heating devices 2 illustrated in Figs. 2 and 3 but are not illustrated here.
  • an electrically heated tobacco product will be described with reference to Fig. 2 .
  • An electrically heated tobacco product 3 is used in such a manner that the heat-not-burn tobacco product 1 described above is inserted so as to be in contact with a heater member 23 disposed inside an electrically heating device 2.
  • the electrically heating device 2 has a battery unit 20 and a control unit 21 inside a frame 22 made of, for example, a resin.
  • the outer peripheral surface of the tobacco rod portion comes in contact with the heater member 23 of the electrically heating device 2, and the entire outer peripheral surface of the tobacco rod portion and part of the outer peripheral surface of a wrapped portion are then come in contact with the heater member.
  • the heater member 23 of the electrically heating device 2 generates heat under the control of the control unit 20. The heat is transferred to the tobacco rod portion of the heat-not-burn tobacco product, and consequently, the aerosol-source material, the flavor component, and the like contained in the tobacco filler of the tobacco rod portion volatilize.
  • the heater member may be, for example, a sheet-like heater, a plate-like heater, or a tubular heater.
  • the sheet-like heater is a flexible sheet-shaped heater, and an example thereof is a heater including a film (about 20 to 225 ⁇ m in thickness) of a heat-resistant polymer such as polyimide.
  • the plate-like heater is a rigid plate-shaped heater (about 200 to 500 ⁇ m in thickness), and an example thereof is a heater that includes a plate substrate having a resistance circuit thereon and uses this portion as a heat generating portion.
  • the tubular heater is a hollow or solid tube-shaped heater (about 200 to 500 ⁇ m in thickness), and an example thereof is a heater that includes a tube made of a metal or the like and having a resistance circuit on the outer peripheral surface thereof and uses this portion as a heat generating portion.
  • Another example of the heater member may be a rod-like heater or conical heater that is made of a metal or the like, has a resistance circuit therein, and uses this portion as a heat generating portion.
  • the cross-sectional shape of the tubular heater may be, for example, circular, elliptic, polygonal, or rounded polygonal.
  • the above-described sheet-like heater, plate-like heater, or cylindrical heater can be used.
  • the above-described plate-like heater, columnar heater, or conical heater can be used.
  • the length of the heater member in the long axis direction may be within the range of L ⁇ 5.0 mm, where L represents the length (mm) of the tobacco rod portion in the long axis direction.
  • the length of the heater member in the long axis direction is preferably L mm or more from the viewpoint of sufficiently transferring heat to the tobacco rod portion to sufficiently volatilize the aerosol-source material, the flavor component, and the like contained in the tobacco filler, that is, from the viewpoint of aerosol delivery, and preferably L + 0.5 mm or less, L + 1.0 mm or less, L + 1.5 mm or less, L + 2.0 mm or less, L + 2.5 mm or less, L + 3.0 mm or less, L + 3.5 mm or less, L + 4.0 mm or less, L + 4.5 mm or less, or L + 5.0 mm or less from the viewpoint of reducing the generation of a component having an undesired effect on the smoke flavor and the like.
  • the heating strength of the heater member can be set in advance for each electrically heated tobacco product.
  • the heating strength can be set in advance such that after the heat-not-burn tobacco product is inserted into the electrically heating device, preheating is performed for a certain period of time until the temperature of the outer peripheral surface of a portion of the heat-not-burn tobacco product, the portion being inserted into the device, reaches X (°C) and the temperature is then kept at a constant temperature of X (°C) or lower.
  • X (°C) is preferably 80°C or higher and 400°C or lower.
  • X (°C) may be 80°C, 90°C, 100°C, 110°C, 120°C, 130°C, 140°C, 150°C, 160°C, 170°C, 180°C, 190°C, 200°C, 210°C, 220°C, 230°C, 240°C, 250°C, 260°C, 270°C, 280°C, 290°C, 300°C, 310°C, 320°C, 330°C, 340°C, 350°C, 360°C, 370°C, 380°C, 390°C, or 400°C.
  • the temperature of the heater member may be in the above ranges, but the heat-not-burn tobacco product according to an embodiment of the present invention inserted into the heater member of the electrically heated tobacco product is preferably heated to about 250°C to 400°C. Heating the heat-not-burn tobacco product according to an embodiment of the present invention in this temperature range contributes to satisfactorily keeping the stability of the aerosol in use.
  • a vapor generated from the tobacco rod portion by heating with the heater member and containing an aerosol-source material, a flavor component, and the like reaches the oral cavity of the user through the mouthpiece portion including the cooling portion, the filter portion, and the like.
  • An electrically heated tobacco product according to a second embodiment uses the heat-not-burn tobacco product of the second embodiment and includes a power supply, a control unit, and a housing that accommodates these components, and the housing has a recess for accommodating the heat-not-burn tobacco product of the second embodiment and a ventilation hole.
  • the electrically heated tobacco product according to the second embodiment includes a detachable mouthpiece for inhaling an aerosol and a smoke flavor component generated from the heat-not-burn tobacco product accommodated in the recess.
  • the mouthpiece has an electric contact that is electrically connected to the lid of the container of the heat-not-burn tobacco product, and upon being attached to the housing, the mouthpiece is electrically connected to the heater provided on the lid of the container. In addition, this connection also establishes electrically connection to the control unit accommodated in the housing.
  • a user places the second heat-not-burn tobacco product in the recess of the housing of the electrically heated tobacco product and attaches the mouthpiece to the housing of the electrically heated tobacco product.
  • the hole-forming part of the lid of the container is open, and an inhalation port of the mouthpiece communicates with a flow path of the container.
  • the user presses a switch provided on the electrically heated tobacco product to supply electric power from the power supply to the heater through the control unit, and the container included in the heat-not-burn tobacco product is heated by the heater that is generating heat.
  • the aerosol-source material and the smoke flavor component volatilize from the tobacco filler in the container to generate an aerosol.
  • An electrically heated tobacco product 4 configured to heat a heat-not-burn tobacco product by induction heating includes an inductor 33 instead of the heater member 23 of the electrically heated tobacco product according to the first embodiment illustrated in Fig. 2 , a battery unit 30 that supplies the inductor with electric power to operate the inductor, and a control unit 31 that controls supply of electric power ( Fig. 4 ).
  • the operation may be manually performed or may automatically occur in response to the insertion by a user in the heat-not-burn tobacco product inserted into an electrically heating device 5.
  • the battery unit 30 supplies a DC current.
  • the control unit 31 includes a DC/AC inverter for supplying the inductor with a high-frequency AC current.
  • the high-frequency alternating current passes through a dielectric coil that forms part of the inductor 33.
  • the inductor 33 generates a fluctuating electromagnetic field.
  • the frequency of the electromagnetic field preferably fluctuates by 1 MHz or more and 30 MHz or less, preferably 2 MHz or more and 10 MHz or less, and, for example, 5 MHz or more and 7 MHz or less.
  • a heat-not-burn tobacco product 1' is designed to operate in synchronization with the use of the electrically heating device 5 that electrically operates, and has, inside a rod portion formed of a tobacco filler, a susceptor 35 that heats the tobacco filler.
  • a susceptor 35 that heats the tobacco filler.
  • the material of the susceptor 35 include aluminum, iron, iron alloys, stainless steel, nickel, and nickel alloys.
  • the inductor 33 is located to be adjacent to an inner wall of a reception chamber 34 for receiving the heat-not-burn tobacco product.
  • the user inserts the heat-not-burn tobacco product 1' into the electrically heating device 5 such that the part having the susceptor 35 is located at a position close to the inductor 33.
  • the susceptor 35 included in the heat-not-burn tobacco product 1' is located in a fluctuating electromagnetic field.
  • the fluctuating electromagnetic field generates an eddy current in the susceptor 35, and as a result, this susceptor 35 is heated. Further heating is provided by magnetic hysteresis loss in the susceptor 35.
  • the heated susceptor 35 heats the tobacco rod portion of the heat-not-burn tobacco product 1' to a temperature sufficient to form an aerosol.
  • the tobacco rod portion may be heated to 250°C or higher and 400°C or lower in an embodiment.
  • the aerosol generated by heating passes inside the heat-not-burn tobacco product and is inhaled by the user.
  • a tobacco filler (a sheet obtained by a papermaking process) was prepared in advance by mixing an aerosol-source material (glycerin) 15/100 g with shreds of a sheet tobacco.
  • the fatty acid or the lipid shown in Table 1 was used as an aerosol stabilizer.
  • the aerosol stabilizer shown in Table 1 was dissolved in ethanol in a ratio of 0.1% to 1% by weight, and the resulting solution was added to the sheet obtained by the papermaking process and cut in advance to 115 mm ⁇ 115 mm by uniformly spraying the solution on a surface of the sheet with a glass atomizer (Brown 30 mL, Type number: 4) so as to achieve the weight addition ratio in Table 1.
  • a glass atomizer Brown 30 mL, Type number: 4
  • As wrapping paper typical cigarette wrapping paper including 100% virgin pulp (70% by weight) and calcium carbonate (PCX850 manufactured by Shiraishi Kogyo Kaisha, Ltd., 30% by weight) serving as a filler was prepared.
  • the tobacco rods of Experimental Example 1 prepared by the method described above were cut to a length of 12 mm. With the wrapping paper, the tobacco rods were each manually connected to an 8-mm support member (8.0Y40000) having a center hole, a 20-mm-long cooling portion formed of a paper tube having dilution air holes (ventilation rate: 20%) in the outer circumference thereof, and a 7-mm-long filter portion filled with cellulose acetate fibers (5.0Y35000) to prepare heat-not-burn tobacco products.
  • 8-mm support member 8.0Y40000
  • a 20-mm-long cooling portion formed of a paper tube having dilution air holes (ventilation rate: 20%) in the outer circumference thereof
  • a 7-mm-long filter portion filled with cellulose acetate fibers 5.0Y35000
  • the heat-not-burn tobacco products prepared in Experimental Example 1 were each subjected to a use test.
  • An electrically heated tobacco product having the configuration described above was used in the use test.
  • the heater temperature at the time of insertion of the tobacco rod of the heat-not-burn tobacco product was set at 320°C (cylindrical heater ⁇ 3.2 mm), and the use test was conducted.
  • a sensory evaluation was conducted by 10 in-house panelists.
  • the evaluation was conducted by a visual analog scale method (VAS method) on eight scales, namely, "not felt”, “very weak”, “weak”, “slightly weak, “neither weak nor strong”, “slightly strong”, “strong”, and “very strong” with respect to a feeling of smoking (cigarette-like).
  • VAS method visual analog scale method
  • the feeling of smoking was evaluated as a "somatic sensation including a flavor and a feeling of stimulation similar to a cigarette".
  • the maximum number of products evaluated per day was 5, and an additive-free lot was also evaluated on each evaluation day.
  • smoking was started after 30 seconds from the start of heating, smoking was then performed at an interval of 30 seconds, and smoking was allowed for up to five minutes.
  • a period of two minutes from the start of heating was excluded from the evaluation target.
  • the panelists certainly had a 5-minute recess during the period from the finish of evaluation to the start of evaluation of the next lot.
  • the feeling of smoking was represented by a value determined by subtracting the sensory evaluation result of the additive-free lot from the sensory evaluation result of each lot to which the substance shown in Table 1 was added.
  • solubility In the measurement of solubility, a fatty acid was added to 2 g of glycerin in such an excessive amount that an undissolved part was generated, and the amount of fatty acid dissolved in glycerin was measured. If the amount of fatty acid excessively added is large, the separation into two layers becomes difficult, and thus it is necessary to add the fatty acid in a slightly excessive amount. After the addition of the fatty acid, the mixture was allowed to stand for 48 hours and separated into two layers, 100 mg of glycerin was then taken, and transferred and dissolved into 2 mL of methanol, and the amount of fatty acid was quantitatively determined by GC-FID (model 7890A, Agilent Technologies, Inc.).
  • a peak particle diameter based on the number is considered to indicate the stability under reduced pressure and a high dilution condition and thus is used as the index.
  • a larger count median diameter means that an aerosol is more stably present, and a smaller count median diameter means that an aerosol is more unstable.
  • the primary dilution was performed at 25 L/min, and the secondary dilution was set to 200-fold and performed.
  • a mass peak particle diameter immediately after the generation before dilution and pressure reduction were involved was also separately measured with Spraytec (Model STP5321, Mulvern), and, in the types of additives and the range of the amounts of additives added in this Example, there was no difference, and the count median diameters were present at about 200 nm.
  • Table 2 shows the test results.
  • Fig. 5 shows solubility in glycerin and the effect of the feeling of smoking in each single fatty acid
  • Fig. 6 shows the feeling of smoking obtained when palmitic acid, which is a C16 saturated fatty acid, and oleic acid serving as a mixing component were added and shows the effect of the feeling of smoking obtained when palm oil or candelilla wax, which is typically often added as a lipid, was used.
  • the results showed that the highest feeling of smoking was obtained when palmitic acid, which is a C16 saturated fatty acid, and stearic acid, which is a C18 saturated fatty acid, were used, and other single fatty acids had a low effect.

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EP20883647.8A 2019-10-31 2020-10-29 Tabakfüllstoff für tabakprodukte mit erwärmung ohne verbrennung, tabakprodukt mit erwärmung ohne verbrennung und elektrisch beheiztes tabakprodukt Pending EP4052593A4 (de)

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WO2023118840A2 (en) * 2021-12-20 2023-06-29 Nicoventures Trading Limited An aerosol generating material
WO2023161690A1 (es) * 2022-02-24 2023-08-31 Compañía Industrial De Tabacos Monte Paz S.A. Pastilla de regarga de dispositivos hnb
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