WO2022071563A1 - Tobacco sheet - Google Patents

Tobacco sheet Download PDF

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Publication number
WO2022071563A1
WO2022071563A1 PCT/JP2021/036389 JP2021036389W WO2022071563A1 WO 2022071563 A1 WO2022071563 A1 WO 2022071563A1 JP 2021036389 W JP2021036389 W JP 2021036389W WO 2022071563 A1 WO2022071563 A1 WO 2022071563A1
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WO
WIPO (PCT)
Prior art keywords
tobacco
sheet
segment
weight
wet
Prior art date
Application number
PCT/JP2021/036389
Other languages
French (fr)
Japanese (ja)
Inventor
公隆 打井
Original Assignee
日本たばこ産業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日本たばこ産業株式会社 filed Critical 日本たばこ産業株式会社
Priority to EP21875859.7A priority Critical patent/EP4223150A1/en
Priority to JP2022554133A priority patent/JPWO2022071563A1/ja
Publication of WO2022071563A1 publication Critical patent/WO2022071563A1/en
Priority to PCT/JP2022/025758 priority patent/WO2023053635A1/en
Priority to JP2023550380A priority patent/JPWO2023053635A1/ja
Priority to JP2023550378A priority patent/JPWO2023053633A1/ja
Priority to KR1020247014206A priority patent/KR20240067127A/en
Priority to JP2023550379A priority patent/JPWO2023053634A1/ja
Priority to PCT/JP2022/025741 priority patent/WO2023053634A1/en
Priority to KR1020247014205A priority patent/KR20240067126A/en
Priority to KR1020247014009A priority patent/KR20240067119A/en
Priority to PCT/JP2022/025729 priority patent/WO2023053633A1/en

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Classifications

    • 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
    • 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
    • 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

Definitions

  • the present invention relates to a tobacco sheet.
  • Patent Document 1 Many techniques related to non-combustion type smoking articles that suck the flavor component generated by heating a tobacco sheet have been proposed (for example, Patent Document 1).
  • non-combustion type smoking articles do not have sufficiently high delivery efficiency and the like as compared with conventional combustion type smoking articles, so it has been studied to improve the satisfaction level of use in non-combustion type smoking articles.
  • degree of satisfaction in use the inventors have found that the response in the initial stage of suction is high, that is, the degree of satisfaction in use increases when the delivery of the flavor component in the initial stage of suction is sufficient. In view of such circumstances, it is an object of the present invention to provide a tobacco sheet that achieves sufficient delivery of flavor components at the initial stage of suction.
  • a tobacco sheet having a density of 1.0 g / cm 3 or less A tobacco sheet having a density of 1.0 g / cm 3 or less.
  • the sheet according to (1) which is a pressure-formed sheet.
  • (1) or (2) which is a wet powder containing tobacco particles having a D90 of 200 ⁇ m or more and a liquid medium, and having a water content of 50% by weight or more in the wet powder.
  • Sheet described in. (4)
  • the sheet according to (4) which contains tobacco particles having a D90 of 500 ⁇ m or more.
  • a non-combustion heating type smoking article comprising the tobacco sheet according to any one of (1) to (5) above or a material derived from the tobacco sheet.
  • the medium contains water.
  • the production method according to (7) or (8), wherein the step 2 comprises preparing a laminated sheet in which a wet sheet is present between two base films.
  • step 1 comprises kneading at least a tobacco material, a binder, and a medium with a uniaxial or multiaxial kneader.
  • step 1 comprises kneading at least a tobacco material, a binder, and a medium with a uniaxial or multiaxial kneader.
  • the mixture contains 20 to 80% by weight of a medium based on the total amount of the mixture.
  • Schematic diagram showing an example of a tobacco segment using a tobacco sheet Schematic cross-sectional view showing an example of a non-combustion heating type smoking system
  • X to Y includes X and Y which are fractional values thereof.
  • X to Y includes X and Y which are fractional values thereof.
  • Tobacco sheet A tobacco sheet is a sheet used for smoking articles and includes at least a tobacco material and a binder.
  • Binder A binder is an adhesive for binding tobacco materials to each other or to tobacco materials and other components.
  • known binders can be used.
  • binders include polysaccharides such as guar gum or xanthan gum; and cellulose derivatives such as CMC (carboxymethyl cellulose), CMC-Na (sodium salt of carboxymethyl cellulose), or HPC (hydroxypropyl cellulose).
  • the upper limit of the content of the binder is the dry weight (weight excluding mixed water, the same applies hereinafter) with respect to the dry weight of the tobacco sheet, preferably 6% by weight or less, and the lower limit is preferably 1. By weight% or more, more preferably 3% by weight or more. If the amount of the binder exceeds the upper limit value or is less than the lower limit value, the above effect may not be sufficiently achieved.
  • Binders include polysaccharides, proteins, and synthetic polymers. Specific examples of these are shown below. In the present invention, these binders can also be used in combination.
  • Cellulose derivatives [Cellulose ethers] Methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxymethyl ethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose, benzyl cellulose, trityl cellulose, cyanoethyl cellulose, carboxymethyl cellulose, carboxyethyl cellulose, aminoethyl cellulose [cellulose esters] Organic acid esters: cellulose acetate, cellulose formate, propionate cellulose, butyrate cellulose, benzoate cellulose, phthalate cellulose, tosyl cellulose Inorganic acid esters: cellulose nitrate, cellulose sulfate, cellulose phosphate, cellulose xanthogenate
  • Naturally-derived polysaccharides [plant-derived] Guar gum, tara gum, roasted bean gum, tamarind seed gum, pectin, gum arabic, tragant gum, karaya gum, gutti gum, arabinogalactan, ama seed gum, cassha gum, psyllium seed gum, savaku yomogi seed gum [derived from algae] Carrageenan, agar, alginate, propylene glycol alginate, farcerelan, fuchronoli extract [derived from microorganisms] Xanthan gum, gellan gum, curdlan, pullulan, agrobacterium succinoglycan, welan gum, macrohomopsis gum, lambzan gum [derived from crustaceans] Chitin, chitosan, glucosamine [starches] Starch, sodium starch glycolate, pregelatinized starch, dextrin
  • the tobacco sheet of the present invention contains tobacco particles as a tobacco material.
  • Tobacco particles are particulate tobacco-derived materials, and examples thereof include particles (crushed leaf tobacco) obtained by crushing leaf tobacco.
  • the upper limit of the particle size D90 is not limited, but is preferably 5 mm or less, more preferably 3 mm or less, still more preferably 1 mm or less from the viewpoint of handleability and the like.
  • the lower limit of the particle size D90 is not limited, but is preferably 200 ⁇ m or more, more preferably 300 ⁇ m or more, still more preferably 400 ⁇ m or more, and particularly preferably 500 ⁇ m or more.
  • the upper limit of the average particle size D50 is preferably 1500 ⁇ m or less, 1000 ⁇ m or less, and 500 ⁇ m or less, and the lower limit thereof is preferably 50 ⁇ m or more, more preferably 100 ⁇ m or more, and further preferably 120 ⁇ m or more.
  • the pulverization can be performed using a known pulverizer, and may be either dry pulverization or wet pulverization. Therefore, the crushed leaf tobacco is also referred to as leaf tobacco particles.
  • the particle size is determined by a laser diffraction / scattering method, and specifically, it is measured using a laser diffraction type particle size distribution measuring device (for example, LA-950 manufactured by HORIBA, Ltd.).
  • the type of tobacco is not limited, and yellow varieties, Burley varieties, Orient varieties, native varieties, and other Nicotiana-Tabacam varieties, Nicotiana rustica varieties, and the like can be used.
  • the amount of tobacco particles in the tobacco sheet is not particularly limited, but is preferably 50 to 95% by weight, more preferably 60 to 90% by weight in terms of dry weight.
  • Aerosol-producing base material The tobacco sheet may contain an aerosol-forming base material.
  • the aerosol-forming substrate is a material that is vaporized and cooled by heating to form an aerosol, or is atomized to produce an aerosol.
  • Known aerosol-forming substrates can be used, such as polyhydric alcohols such as glycerin or propylene glycol (PG); and triethylcitrate (TEC) or triacetin having a boiling point of 100 ° C.
  • the amount of the aerosol-forming base material in the tobacco sheet is a dry weight (weight excluding mixed water, the same applies hereinafter), preferably 1 to 40% by weight, and more preferably 10 to 20% by weight. If the amount of the aerosol-forming base material exceeds the upper limit value, it may be difficult to manufacture the tobacco sheet, and if it is less than the lower limit value, the amount of smoke sensation may decrease.
  • the tobacco sheet may contain an emulsifier.
  • the emulsifier enhances the affinity between the lipophilic aerosol-forming substrate and the hydrophilic tobacco material. Therefore, the addition of an emulsifier is particularly effective when a lipophilic aerosol-forming substrate is used.
  • Known emulsifiers can be used, and examples thereof include emulsifiers having an HLB value of 8 to 18.
  • the amount of the emulsifier is not particularly limited, but is preferably 0.1 to 3 parts by weight, more preferably 1 to 2 parts by weight, based on 100 parts by weight of the tobacco sheet.
  • the tobacco sheet of the present invention does not contain fibers derived from tobacco and fibers derived from materials other than tobacco (for example, cellulose) in one embodiment. In this embodiment, it is possible to prevent these fibers from exerting an undesired effect such as miscellaneous taste on the taste. However, since it is not realistic to completely eliminate the fibers, the amount of the fibers in the tobacco sheet is preferably 1.0% by weight or less, more preferably 0.5% by weight or less in terms of dry weight.
  • the tobacco sheet of the present invention contains, in another aspect, fibers derived from tobacco or fibers derived from a material other than tobacco. In particular, as the particle size of the tobacco particles increases, the sheet tends to become brittle, so that the tobacco sheet preferably contains the fibers.
  • the content (total) of the sheets is 0.5 to 2.0% by weight in dry weight.
  • the fiber improves the strength of the tobacco sheet and is excellent in the balance between taste and strength.
  • the tobacco-derived fiber means a fiber obtained by pulping a tobacco raw material by beating with a grinder or the like, and is different from the above-mentioned tobacco particles.
  • the tobacco sheet may contain a fragrance.
  • a fragrance is a substance that provides a scent and flavor.
  • the fragrance may be a natural fragrance or a synthetic fragrance.
  • One kind of fragrance may be used as a fragrance, or a mixture of a plurality of kinds of fragrances may be used.
  • As the fragrance any fragrance generally used in smoking articles can be used, and specific examples thereof will be described later.
  • the fragrance can be contained in the smoking article sheet in an amount such that the smoking article can provide a preferable scent and flavor, for example, the amount thereof is preferably 1 to 30% by weight in the tobacco sheet, more preferably. Is 2 to 20% by weight.
  • the type of the fragrance is not particularly limited, and from the viewpoint of imparting a good fragrance feeling, acetoanisol, acetophenone, acetylpyrazine, 2-acetylthiazole, alfalfa extract, amyl alcohol, amyl butyrate, trans-annetol, star anis Oil, apple juice, peruvian balsam oil, beeswax absolute, benzaldehyde, benzoin resinoid, benzyl alcohol, benzyl benzoate, benzyl phenylacetate, benzyl propionate, 2,3-butandione, 2-butanol, butyl butyrate, butyric acid, caramel, cardamon Oil, Carobu Absolute, ⁇ -Carotene, Carrot Juice, L-Carbon, ⁇ -Cariophyllene, Cassia Bark Oil, Cedarwood Oil, Cellory Seed Oil, Chamomile Oil, Cinnamaldehyde, Cayhide Acid, Cinnam
  • the tobacco sheet of the present invention has a density of 1.0 g / cm 3 or less.
  • a tobacco sheet having such a low density can achieve sufficient delivery of flavor components in the initial stage of suction.
  • the reason for this is not limited, but it is presumed that the low-density tobacco sheet can reduce the filling density of the tobacco filling in the smoking article, so that the amount of heat received per weight can be increased.
  • cost reduction can be achieved by reducing the filling density. From these viewpoints, the density is preferably 0.95 g / cm 3 or less, more preferably 0.75 g / cm 3 or less.
  • the lower limit of the density is not limited, but is preferably 0.5 g / cm 3 or more from the viewpoint of strength and the like.
  • the density is calculated from the basis weight (weight per unit area) and the thickness.
  • the air permeability of the tobacco sheet of the present invention is preferably in the unit of 0 cholesterol.
  • the thickness of the tobacco sheet is not limited, but the upper limit is preferably 1500 ⁇ m or less, more preferably 1000 ⁇ m or less, still more preferably 500 ⁇ m or less.
  • the lower limit is preferably 20 ⁇ m or more, more preferably 100 ⁇ m or more, and further preferably 150 ⁇ m or more.
  • Tobacco segment A tobacco segment used for smoking articles can be produced from a tobacco sheet.
  • the tobacco segment comprises, in one aspect, a tubular wrapper and a tobacco sheet filled in the wrapper in a spiral shape (see FIG. 1A).
  • 20A is a tobacco segment
  • 1 is a tobacco sheet
  • 22 is a wrapper, and is usually paper.
  • the tobacco segment is preferably rod-shaped, having a length of 15 to 80 mm and a diameter of about 5 to 10 mm.
  • the tobacco segment 20A shown in FIG. 1 (A) can be cut to have an aspect ratio (length / diameter) of about 0.5 to 1.2 (see FIG. 1 (B)).
  • the tobacco segment 20A includes a tubular wrapper 22 in another embodiment, and includes a tobacco sheet 1 folded and filled in the wrapper.
  • the ridges created by folding are substantially parallel to the longitudinal direction of the segment (see FIG. 1 (C)).
  • the tobacco segment 20A is preferably rod-shaped, has a length of 15 to 80 mm and a diameter of about 5 to 10 mm.
  • it is preferable that the tobacco sheet 1 is previously subjected to surface wrinkling processing such as pleating or crimping.
  • the tobacco segment 20A includes a tubular wrapper 22 in another embodiment, and includes a cut piece 1c of a tobacco sheet filled in the wrapper (see FIG. 1 (D)).
  • the tobacco segment 20A is preferably rod-shaped, has a length of 15 to 80 mm and a diameter of about 5 to 10 mm.
  • the size of the cut piece is not limited, but for example, the length of the longest side can be about 2 to 20 mm and the width can be about 0.5 to 1.5 mm.
  • the tobacco segment 20A is provided with a tubular wrapper 22 in another embodiment, and is provided with a strand type engraving filled in the wrapper (see FIG. 1 (E)).
  • the strand type engraving is filled so that its longitudinal direction is substantially parallel to the longitudinal direction of the wrapper 22.
  • the width of the strand type engraving can be about 0.5 to 1.5 mm.
  • the tobacco segment 20A comprises a tubular wrapper 22 in another embodiment, and includes a tobacco engraved filling randomly filled in the wrapper.
  • Tobacco carving is a cut piece and is different from strand type carving.
  • the tobacco sheet can be manufactured by any method, but is preferably manufactured by a method including the following steps. At least, the step 1 of kneading the tobacco particles, the binder, and the medium to prepare a mixture. Step 2 to prepare a wet sheet by squeezing or extruding the mixture from a die. Step 3 of drying the wet sheet.
  • a sheet formed by applying pressure in this way is referred to as a "pressure molded sheet", and as will be described later, the "pressure molded sheet” includes a "laminated sheet” and an "extruded sheet".
  • the laminated sheet is a sheet obtained by compressing the mixture with a roller at least once to a target thickness and then drying it to a target moisture content.
  • the extruded sheet is a sheet obtained by extruding a mixture from a T-die or the like to a target thickness and then drying it to a target water content. Compression and extrusion may be combined in a pressure molded sheet. For example, the mixture may be extruded and then further compressed to form a sheet.
  • Step 1 the tobacco particles, the binder, and the medium are kneaded. If desired, aerosol-forming substrates, emulsifiers, or fragrances can be added. The blending amount of each component is adjusted so that the above-mentioned amount can be achieved.
  • the medium is preferably water or a water-soluble organic solvent having a boiling point of less than 100 ° C. such as ethanol as a main component, and more preferably water or ethanol.
  • This step can be carried out by kneading each component, but is preferably carried out through 1) pulverization of a raw material (for example, a single leaf), 2) preparation of wet powder, and 3) kneading.
  • 1) Crushing In this step pre-crushed tobacco particles having the above-mentioned particle size may be used, but in one embodiment, the raw material is coarsely crushed, and then a crusher (for example, manufactured by Hosokawa Micron, ACM-5) is used.
  • Tobacco particles having the above-mentioned particle size are prepared by finely grinding using the above-mentioned particles. The particle size is measured using a laser diffraction type particle size meter such as a master sizer (manufactured by Malvern).
  • wet powder Preparation of wet powder Add a binder and, if necessary, additives such as fragrance and lipid to the crushed tobacco raw material (for example, tobacco particles) and mix them. Since this mixing is preferably a dry blend, it is preferable to use a mixer as a mixer. Next, a medium such as water and, if necessary, an aerosol-forming base material such as glycerin are added to the dry blend and mixed with a mixer to prepare a wet powder (wet powder).
  • the amount of the medium in the wet powder can be preferably 20 to 80% by weight, more preferably 20 to 40% by weight, and is appropriately prepared by Step 2.
  • the amount of the medium when compression is performed in step 2, can be 20 to 60% by weight or 20 to 50% by weight, and when extrusion is performed, it can be 20 to 80% by weight.
  • the solid content concentration of the wet powder is preferably 50 to 90% by weight.
  • a wet powder containing tobacco particles having a D90 of 200 ⁇ m or more and a liquid medium containing water (more preferably a liquid medium composed of water) and having a water content of 50% by weight or more is used.
  • the wet powder is kneaded using a kneader (for example, DG-1 manufactured by Dalton).
  • a kneader for example, DG-1 manufactured by Dalton.
  • the kneading is preferably carried out until the medium is completely spread, for example, it is preferable to knead until the color of the mixture becomes uniform visually.
  • Step 2 the mixture (wet powder) is squeezed or extruded from a die to prepare a wet sheet.
  • a calendar device for example, manufactured by Yuri Roll Machinery Co., Ltd.
  • a predetermined thickness more than 100 ⁇ m
  • pressurize the mixture It can be expanded to obtain a laminate in which a wet sheet is present between two base films.
  • a non-adhesive film such as a fluoropolymer film is preferable.
  • the pressure expansion by the rollers can be performed multiple times.
  • the mixture (wet powder) from a die (preferably a T die) provided with a predetermined gap to form a wet sheet on the substrate.
  • a die preferably a T die
  • known materials such as a glass plate, a metal plate, and a plastic plate can be used.
  • a known extruder can be used for extrusion.
  • Step 3 the wet sheet is dried.
  • this step can be carried out by the following procedure. 1) Peel off one of the base films. 2) Dry the laminate using a ventilation dryer. The drying temperature may be room temperature, but is preferably 50 to 100 ° C., and the drying time can be 1 to 2 minutes. 3) Next, the remaining base film is peeled off and further dried under the above conditions to obtain a tobacco sheet. By performing the drying in this way, it is possible to prevent the tobacco sheet from adhering to other base materials.
  • the tobacco sheet obtained in this way is also referred to as a "laminate sheet".
  • the laminated sheet has a smooth surface and is preferable because it can suppress the occurrence of spillage when it comes into contact with other members. Further, this method is suitable for producing a sheet having a thickness of 300 ⁇ m or less.
  • the wet sheet on the base material is air-dried or heated to dry.
  • the drying conditions are as described above.
  • the tobacco sheet thus obtained is also referred to as an "extruded sheet".
  • the extruded sheet is preferable because it has a smooth surface and can suppress the occurrence of spillage when it comes into contact with other members. This method is suitable for producing a sheet having a thickness of 200 ⁇ m or more.
  • smoking articles examples include flavor-sucking articles in which the user tastes the flavor by suction, and smokeless tobacco (smokeless smoking articles) in which the user tastes the flavor by directly including the product in the nasal cavity and oral cavity.
  • the flavor suction article can be roughly classified into a combustion type smoking article typified by a conventional cigarette and a non-combustion type smoking article.
  • the tobacco sheet of the present invention is suitable for a flavor suction article.
  • combustion-type flavor suction article examples include cigarettes, pipes, pipes, cigars, cigarillos, and the like.
  • the non-combustion heating type flavor suction article may be heated by a heating device separate from the article, or may be heated by a heating device integrated with the article.
  • the non-combustion heating type flavor suction article and the heating device are collectively referred to as a "non-combustion heating type smoking system".
  • An example of a non-combustion heating type smoking system will be described below with reference to FIGS. 2 and 3.
  • FIG. 2 is a schematic cross-sectional view showing an example of a non-combustion heating type smoking system, and shows a state before inserting the heater 12 into the tobacco segment 20A of the non-combustion heating type flavor suction article 20. At the time of use, the heater 12 is inserted into the tobacco segment 20A.
  • FIG. 3 is a cross-sectional view of the non-combustion heating type flavor suction article 20.
  • the non-combustion heating type smoking system includes a non-combustion heating type flavor suction article 20 and a heating device 10 for heating the tobacco segment 20A from the inside.
  • the non-combustion heating type smoking system is not limited to the configuration shown in FIG.
  • the heating device 10 shown in FIG. 2 includes a body 11 and a heater 12.
  • the body 11 may include a battery unit and a control unit.
  • the heater 12 can be a heater due to electrical resistance and is inserted into the tobacco segment 20A to heat the tobacco segment 20A.
  • the tobacco sheet of the present invention is highly effective when the tobacco segment 20A is heated from the inside as shown in FIG.
  • the aspect of the non-combustion heating type flavor suction article 20 is not limited to this, and in another aspect, the tobacco segment 20A is heated from the outside.
  • the heating temperature by the heating device 10 is not particularly limited, but is preferably 400 ° C. or lower, more preferably 50 to 400 ° C., and even more preferably 150 to 350 ° C.
  • the heating temperature refers to the temperature of the heater 12 of the heating device 10.
  • the non-combustion heating type flavor suction article 20 (hereinafter, simply referred to as “flavor suction article 20”) has a cylindrical shape.
  • the circumference of the flavor suction article 20 is preferably 16 to 27 mm, more preferably 20 to 26 mm, and even more preferably 21 to 25 mm.
  • the total length (horizontal length) of the flavor suction article 20 is not particularly limited, but is preferably 40 to 90 mm, more preferably 50 to 75 mm, and even more preferably 50 to 60 mm.
  • the flavor suction article 20 is composed of a cigarette segment 20A, a filter portion 20C constituting a mouthpiece, and a connecting portion 20B connecting these.
  • the tobacco segment 20A is columnar, and its total length (length in the axial direction) is preferably, for example, 5 to 100 mm, more preferably 10 to 50 mm, and further preferably 10 to 25 mm. preferable.
  • the shape of the cross section of the tobacco segment 20A is not particularly limited, but may be, for example, a circle, an ellipse, a polygon, or the like.
  • the tobacco segment 20A has a tobacco sheet or a material 21 derived from the tobacco sheet, and a wrapper 22 wrapped around the tobacco sheet 20A. Further, the wrapper 22 may be the tobacco sheet 1 of the present invention.
  • the filter unit 20C has a cylindrical shape.
  • the filter unit 20C has a rod-shaped first segment 25 filled with cellulose acetate acetate fiber and a rod-shaped second segment 26 also filled with cellulose acetate acetate fiber.
  • the first segment 25 is located on the tobacco segment 20A side.
  • the first segment 25 may have a hollow portion.
  • the second segment 26 is located on the mouthpiece side.
  • the second segment 26 is solid.
  • the first segment 25 is composed of a first packed layer (cellulose acetate acetate fiber) 25a and an inner plug wrapper 25b wound around the first packed layer 25a.
  • the second segment 26 is composed of a second packed layer (cellulose acetate acetate fiber) 26a and an inner plug wrapper 26b wound around the second packed layer 26a.
  • the first segment 25 and the second segment 26 are connected by an outer plug wrapper 27.
  • the outer plug wrapper 27 is adhered to the first segment 25 and the second segment 26 with a vinyl acetate emulsion-based adhesive
  • the length of the filter portion 20C is, for example, 10 to 30 mm
  • the length of the connecting portion 20B is, for example, 10 to 30 mm
  • the length of the first segment 25 is, for example, 5 to 15 mm
  • the length of the second segment 26 is, for example, 5 to 15 mm. can do.
  • the length of each of these individual segments is an example, and can be appropriately changed depending on the manufacturing aptitude, the required quality, the length of the tobacco segment 20A, and the like.
  • the first segment 25 (center hole segment) is composed of a first packed layer 25a having one or more hollow portions and an inner plug wrapper 25b covering the first packed layer 25a.
  • the first segment 25 has a function of increasing the strength of the second segment 26.
  • the first packed layer 25a of the first segment 25 is filled with, for example, cellulose acetate fibers at a high density.
  • a plasticizer containing triacetin is added to the cellulose acetate fiber in an amount of, for example, 6 to 20% by mass based on the mass of cellulose acetate and cured.
  • the hollow portion of the first segment 25 has, for example, an inner diameter of ⁇ 1.0 to ⁇ 5.0 mm.
  • the first packed layer 25a of the first segment 25 may be composed of, for example, a relatively high fiber filling density, or may be equivalent to the fiber filling density of the second packed layer 26a of the second segment 26 described later. May be good. Therefore, at the time of suction, air or aerosol flows only in the hollow portion, and almost no air or aerosol flows in the first packed bed 25a.
  • the length of the second segment 26 can be shortened and the first segment 25 can be lengthened by that amount.
  • Replacing the shortened second segment 26 with the first segment 25 is effective for increasing the delivery amount of the aerosol component. Since the first packed layer 25a of the first segment 25 is a fiber packed layer, the feeling of touch from the outside during use does not cause a sense of discomfort to the user.
  • the second segment 26 is composed of a second packed layer 26a and an inner plug wrapper 26b that covers the second packed layer 26a.
  • the second segment 26 (filter segment) is filled with cellulose acetate fibers at a general density and has the filtering performance of a general aerosol component.
  • the filtration performance for filtering the aerosol (mainstream smoke) emitted from the tobacco segment 20A may be different between the first segment 25 and the second segment 26. At least one of the first segment 25 and the second segment 26 may contain a fragrance.
  • the structure of the filter unit 20C is arbitrary, and may be a structure having a plurality of segments as described above, or may be composed of a single segment. Further, the filter unit 20C may be composed of one segment. In this case, the filter unit 20C may be composed of either a first segment or a second segment.
  • the connecting portion 20B has a cylindrical shape.
  • the connecting portion 20B has a paper tube 23 formed in a cylindrical shape by, for example, thick paper.
  • the connecting portion 20B may be filled with a cooling member for cooling the aerosol.
  • the cooling member include a sheet of a polymer such as polylactic acid, and the sheet can be folded and filled.
  • a support portion may be provided between the tobacco segment 20A and the connecting portion 20B to prevent the position of the tobacco segment 20A from fluctuating.
  • the support portion can be made of a known material such as a center hole filter such as the first segment 25.
  • the wrapper 28 is wound in a cylindrical shape on the outside of the tobacco segment 20A, the connecting portion 20B, and the filter portion 20C, and these are integrally connected.
  • a vinyl acetate emulsion-based adhesive is applied to one surface (inner surface) of the wrapper 28 on the entire surface or substantially the entire surface except the vicinity of the ventilation hole portion 24.
  • the plurality of ventilation holes 24 are formed by laser processing from the outside after the tobacco segment 20A, the connecting portion 20B, and the filter portion 20C are integrated by the wrapper 28.
  • the ventilation hole portion 24 has two or more through holes so as to penetrate the connecting portion 20B in the thickness direction.
  • the two or more through holes are formed so as to be arranged radially when viewed from the extension line of the central axis of the flavor suction article 20.
  • the ventilation hole portion 24 is provided in the connecting portion 20B, but may be provided in the filter portion 20C.
  • the two or more through holes of the ventilation hole portion 24 are provided side by side in a row at regular intervals on one ring, but at regular intervals on the two rings.
  • the vent holes 24 in one row or two rows may be provided side by side in two rows, or the ventilation holes 24 in one row or two rows may be provided side by side in a discontinuous or irregular manner.
  • Example 1 Tobacco leaves were pulverized using a pulverizer (ACM-5 manufactured by Hosokawa Micron) so that D90 was 400 ⁇ m to obtain leaf tobacco particles. D90 was measured with a master sizer (manufactured by malvern). Leaf tobacco particles and Sunrose F20HC (cellulose ether manufactured by Nippon Paper Industries, Ltd.) as a binder were dry-blended using a mixer. Next, glycerin as an aerosol-forming base material and water as a medium were added to the dry blend, and the mixture was mixed with a mixer to prepare a wet powder. The composition of each component is as shown in Table 1.
  • the wet powder was kneaded 6 times at room temperature to obtain a mixture.
  • the die shape was a circular shape, and the screw rotation speed was 60 rpm.
  • Teflon (registered trademark) film was peeled off from the laminate and dried at 80 ° C. for 1 to 2 minutes using a ventilation dryer. Then, another film was peeled off, the wet sheet was dried under the same conditions, and the tobacco sheet of the present invention was produced and evaluated.
  • the tobacco leaf crushed product, glycerin, and the binder indicate the dry matter weight
  • the water indicates the total amount of the charged weight and the water content contained in the tobacco leaf crushed product, glycerin, and the binder.
  • Example 2 and 3 Tobacco sheets were produced and evaluated in the same manner as in Example 1 except that leaf tobacco particles having a D90 of 600 ⁇ m and 800 ⁇ m were used, respectively.
  • Tobacco sheets were produced and evaluated in the same manner as in Example 1 except that leaf tobacco particles having a D90 of 80 ⁇ m and 200 ⁇ m were used, respectively.
  • Example 4 Tobacco sheets were produced and evaluated by the same method as in Example 1 except that leaf tobacco particles having a D90 of 200 ⁇ m were used and the weight ratio of water in the wet powder was 50 WB% by weight.
  • Tobacco sheets were produced and evaluated by the same method as in Example 1 except that leaf tobacco particles having a D90 of 200 ⁇ m were used and the weight ratios of water in the wet powder were 30 and 40 WB% by weight, respectively. These results are shown in Table 3.
  • the "amount of water in the wet powder" in Table 3 corresponds to the amount of water in the weight ratio in the wet powder in Table 1.
  • Example 5 and Comparative Example 5 A tobacco sheet having a sheet density of 0.75 g / cm 3 and 0.96 g / cm 3 (Example 5) and a tobacco sheet having a sheet density of 1.19 g / cm 3 (Comparative Example 5) by a casting method according to a conventional method. ) Were manufactured respectively.
  • the smoking article using the sheet of Example 5 has better delivery of the flavor component at the initial stage of suction than the smoking article using the sheet of Comparative Example 5. It was confirmed that. From this, it was inferred that the smoking articles using the tobacco sheets obtained in Examples 1 to 3 also had good delivery of the flavor component in the initial stage of suction.
  • the sample was sampled under the conditions of a smoke absorption capacity of 27.5 ml / sec, a smoke absorption time of 2 seconds / puff, a smoke absorption frequency of 2 puffs / minute, and 14 puffs.
  • the particulate matter in cigarette smoke per puff was collected by a Cambridge filter (Borgwaldt KC Inc., CM-133).
  • the Cambridge filter after the smoking test was shaken in 10 mL of methanol (manufactured by Wako Pure Chemical Industries, Ltd., special grade reagent) to obtain an analysis sample.
  • 1 ⁇ L of the obtained analytical sample was collected in a microsyringe and analyzed by gas chromatograph mass spectrometry (GC-MSD manufactured by Agilent, GC: 7890A, MS: 5975C).
  • a tobacco sheet was cut into 55 mm squares, the weight (dry weight) was measured, and the weight per unit area (basis weight) was calculated. In addition, the thickness was measured with a thickness meter (manufactured by Mitutoyo), and the density was calculated from the basis weight and thickness.
  • a disperser manufactured by Primix
  • the tobacco leaf crushed product, glycerin, and the binder indicate the dry matter weight
  • the water indicates the total amount of the charged weight and the water content contained in the tobacco leaf crushed product, glycerin, and the binder.
  • Example 6 Tobacco sheets were produced and evaluated in the same manner as in Example 5A, except that leaf tobacco particles having a D90 of 80 ⁇ m were used. These results are shown in Table 3.
  • Tobacco sheet 1c Tobacco sheet cut pieces 10 Heating device 11 Body 12 Heater 20 Non-combustion heating type flavor suction article 20A Tobacco segment 20B Connection part 20C Filter part 21 Tobacco sheet or material derived from it 22 Wrapper 23 Paper tube 24 Vent 25 1st segment 25a 1st packed layer 25b Inner plug wrapper 26 2nd segment 26a 2nd packed layer 26b Inner plug wrapper 27 Outer plug wrapper 28 Wrapper

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  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacture Of Tobacco Products (AREA)

Abstract

Provided is a tobacco sheet having a density no greater than 1.0 g/cm3. The tobacco sheet is preferably a laminate sheet.

Description

たばこシートTobacco sheet
　本発明は、たばこシートに関する。 The present invention relates to a tobacco sheet.
　たばこシートを加熱して生成させた香味成分を吸引する非燃焼型喫煙物品に関する技術が多々提案されている（例えば特許文献１）。 Many techniques related to non-combustion type smoking articles that suck the flavor component generated by heating a tobacco sheet have been proposed (for example, Patent Document 1).
特許第５２９２４１０号Patent No. 5292410
　一般に、非燃焼型喫煙物品は従来の燃焼型喫煙物品に比べるとデリバリー効率等が十分に高くないので、非燃焼型喫煙物品における使用満足度を向上させることが検討されてきた。使用満足度に関して、発明者らは吸引初期におけるレスポンスが高いこと、すなわち吸引初期における香味成分のデリバリーが十分であると使用満足度が高まることを見出した。かかる事情に鑑み、本発明は、吸引初期において十分な香味成分のデリバリーを達成するたばこシートを提供することを課題とする。 In general, non-combustion type smoking articles do not have sufficiently high delivery efficiency and the like as compared with conventional combustion type smoking articles, so it has been studied to improve the satisfaction level of use in non-combustion type smoking articles. Regarding the degree of satisfaction in use, the inventors have found that the response in the initial stage of suction is high, that is, the degree of satisfaction in use increases when the delivery of the flavor component in the initial stage of suction is sufficient. In view of such circumstances, it is an object of the present invention to provide a tobacco sheet that achieves sufficient delivery of flavor components at the initial stage of suction.
　発明者らは、たばこシートの密度を特定の範囲とすることで前記課題を解決できることを見出した。すなわち、前記課題は以下の本発明によって解決される。
（１）密度が１．０ｇ／ｃｍ３以下である、たばこシート。
（２）圧力成形シートである、（１）に記載のシート。
（３）Ｄ９０が２００μｍ以上であるたばこ粒子と液体媒体とを含む湿粉であって、湿粉中の水分量が５０重量％以上である湿粉から製造される、（１）または（２）に記載のシート。
（４）Ｄ９０が３００μｍ以上であるたばこ粒子を含む、（１）～（３）のいずれかに記載のシート。
（５）Ｄ９０が５００μｍ以上であるたばこ粒子を含む、（４）に記載のシート。
（６）前記（１）～（５）のいずれかに記載のたばこシートまたはこれに由来する材料を備える、非燃焼加熱型喫煙物品。
（７）少なくとも、たばこ粒子と、バインダーと、媒体とを混練して混合物を調製する工程１、
　前記混合物を圧展またはダイから押出してウェットシートを調製する工程２、ならびに
　前記ウェットシートを乾燥する工程３、
を備える、（１）～（５）のいずれかに記載の製造方法。
（８）前記媒体が水を含む、（７）に記載の製造方法。
（９）前記工程２が、２つの基材フィルムの間にウェットシートが存在するラミネートシートを調製することを含む、（７）または（８）に記載の製造方法。
（１０）前記工程１が、少なくともたばこ材料、バインダー、および媒体とを、一軸または多軸混練機にて混練することを含む、（７）～（９）のいずれかに記載の製造方法。
（１１）前記混合物が、混合物全量に対して２０～８０重量％の媒体を含む、（７）～（１０）のいずれかに記載の製造方法。 The inventors have found that the above problem can be solved by setting the density of the tobacco sheet within a specific range. That is, the above problem is solved by the following invention.
(1) A tobacco sheet having a density of 1.0 g / cm 3 or less.
(2) The sheet according to (1), which is a pressure-formed sheet.
(3) (1) or (2), which is a wet powder containing tobacco particles having a D90 of 200 μm or more and a liquid medium, and having a water content of 50% by weight or more in the wet powder. Sheet described in.
(4) The sheet according to any one of (1) to (3), which contains tobacco particles having a D90 of 300 μm or more.
(5) The sheet according to (4), which contains tobacco particles having a D90 of 500 μm or more.
(6) A non-combustion heating type smoking article comprising the tobacco sheet according to any one of (1) to (5) above or a material derived from the tobacco sheet.
(7) At least, the step 1 of kneading the tobacco particles, the binder, and the medium to prepare a mixture.
Step 2 to prepare a wet sheet by squeezing or extruding the mixture from a die, and step 3 to dry the wet sheet.
The production method according to any one of (1) to (5).
(8) The production method according to (7), wherein the medium contains water.
(9) The production method according to (7) or (8), wherein the step 2 comprises preparing a laminated sheet in which a wet sheet is present between two base films.
(10) The production method according to any one of (7) to (9), wherein the step 1 comprises kneading at least a tobacco material, a binder, and a medium with a uniaxial or multiaxial kneader.
(11) The production method according to any one of (7) to (10), wherein the mixture contains 20 to 80% by weight of a medium based on the total amount of the mixture.
　本発明によって、吸引初期において十分な香味成分のデリバリーを達成するたばこシートを提供できる。 INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a tobacco sheet that achieves sufficient delivery of flavor components at the initial stage of suction.
たばこシートを用いたたばこセグメントの例を示す概要図Schematic diagram showing an example of a tobacco segment using a tobacco sheet 非燃焼加熱型喫煙システムの一例を示す断面模式図Schematic cross-sectional view showing an example of a non-combustion heating type smoking system 非燃焼加熱型香味吸引物品の一例を示す断面模式図Schematic cross-sectional view showing an example of a non-combustion heating type flavor suction article
　以下、本発明を詳細に説明する。本発明において「Ｘ～Ｙ」はその端値であるＸおよびＹを含む。
１．たばこシート
　たばこシートとは喫煙物品に用いられるシートであり、少なくともたばこ材料と、バインダーとを含む。 Hereinafter, the present invention will be described in detail. In the present invention, "X to Y" includes X and Y which are fractional values thereof.
1. 1. Tobacco sheet A tobacco sheet is a sheet used for smoking articles and includes at least a tobacco material and a binder.
（１）バインダー
　バインダーはたばこ材料同士、またはたばこ材料と他の成分を結合するための接着剤である。本発明においては、公知のバインダーを使用できる。かかるバインダーとしては、例えば、グアーガム、またはキサンタンガム等の多糖類；ＣＭＣ（カルボキシメチルセルロース）、ＣＭＣ－Ｎａ（カルボキシメチルセルロースのナトリウム塩）、またはＨＰＣ（ヒドロキシプロピルセルロース）等のセルロース誘導体を挙げることができる。バインダーの含有量の上限は、たばこシートの乾燥重量に対して、乾燥重量（混入している水を除いた重量、以下同様）で、好ましくは６重量％以下、であり、下限は好ましくは１重量％以上、より好ましくは３重量％以上である。バインダーの量が上限値を超えるまたは下限値未満であると、前記効果が十分に奏されない可能性がある。 (1) Binder A binder is an adhesive for binding tobacco materials to each other or to tobacco materials and other components. In the present invention, known binders can be used. Examples of such binders include polysaccharides such as guar gum or xanthan gum; and cellulose derivatives such as CMC (carboxymethyl cellulose), CMC-Na (sodium salt of carboxymethyl cellulose), or HPC (hydroxypropyl cellulose). The upper limit of the content of the binder is the dry weight (weight excluding mixed water, the same applies hereinafter) with respect to the dry weight of the tobacco sheet, preferably 6% by weight or less, and the lower limit is preferably 1. By weight% or more, more preferably 3% by weight or more. If the amount of the binder exceeds the upper limit value or is less than the lower limit value, the above effect may not be sufficiently achieved.
　バインダーとしては、多糖類、たんぱく質、および合成ポリマーが挙げられる。以下に、これらの具体例を示す。本発明においては、これらのバインダーを組合せて使用することもできる。 Binders include polysaccharides, proteins, and synthetic polymers. Specific examples of these are shown below. In the present invention, these binders can also be used in combination.
　１）多糖類
　１－１）セルロース誘導体
［セルロースエーテル類］
　メチルセルロース、エチルセルロース、ヒドロキシエチルセルロース、ヒドロキシメチルエチルセルロース、ヒドロキシプロピルセルロース、ヒドロキシプロピルメチルセルロース、ベンジルセルロース、トリチルセルロース、シアノエチルセルロース、カルボキシメチルセルロース、カルボキシエチルセルロース、アミノエチルセルロース
［セルロースエステル類］
　有機酸エステル：酢酸セルロース、ギ酸セルロース、プロピオン酸セルロース、酪酸セルロース、安息香酸セルロース、フタル酸セルロース、トシルセルロース
　無機酸エステル：硝酸セルロース、硫酸セルロース、リン酸セルロース、セルロースキサントゲン酸塩 1) Polysaccharides 1-1) Cellulose derivatives [Cellulose ethers]
Methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxymethyl ethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose, benzyl cellulose, trityl cellulose, cyanoethyl cellulose, carboxymethyl cellulose, carboxyethyl cellulose, aminoethyl cellulose [cellulose esters]
Organic acid esters: cellulose acetate, cellulose formate, propionate cellulose, butyrate cellulose, benzoate cellulose, phthalate cellulose, tosyl cellulose Inorganic acid esters: cellulose nitrate, cellulose sulfate, cellulose phosphate, cellulose xanthogenate
　１－２）天然由来の多糖類
［植物由来］
　グアーガム、タラガム、ローストビーンガム、タマリンド種子ガム、ペクチン、アラビアガム、トラガントガム、カラヤガム、ガッティガム、アラビノガラクタン、アマシードガム、カッシャガム、サイリウムシードガム、サバクヨモギシードガム
［藻類由来］
　カラギーナン、寒天、アルギン酸、アルギン酸プロピレングリコールエステル、ファーセレラン、フクロノリ抽出物
［微生物由来］
　キサンタンガム、ジェランガム、カードラン、プルラン、アグロバクテリウムスクシノグリカン、ウェランガム、マクロホモプシスガム、ラムザンガム
［甲殻類由来］
　キチン、キトサン、グルコサミン
［デンプン類］
　デンプン、デンプングリコール酸ナトリウム、α化デンプン、デキストリン 1-2) Naturally-derived polysaccharides [plant-derived]
Guar gum, tara gum, roasted bean gum, tamarind seed gum, pectin, gum arabic, tragant gum, karaya gum, gutti gum, arabinogalactan, ama seed gum, cassha gum, psyllium seed gum, savaku yomogi seed gum [derived from algae]
Carrageenan, agar, alginate, propylene glycol alginate, farcerelan, fuchronoli extract [derived from microorganisms]
Xanthan gum, gellan gum, curdlan, pullulan, agrobacterium succinoglycan, welan gum, macrohomopsis gum, lambzan gum [derived from crustaceans]
Chitin, chitosan, glucosamine [starches]
Starch, sodium starch glycolate, pregelatinized starch, dextrin
　２）たんぱく質
　小麦グルテン、ライ麦グルテン 2) Protein Wheat gluten, rye gluten
　３）合成ポリマー
　ポリリン酸、ポリアクリル酸ナトリウム、ポリビニルピロリドン 3) Synthetic polymer Polyphosphoric acid, sodium polyacrylate, polyvinylpyrrolidone
（２）たばこ粒子
　本発明のたばこシートは、たばこ材料として、たばこ粒子を含む。たばこ粒子とは粒子状のたばこ由来材料であり、例えば、葉たばこを粉砕することにより得られる粒子（葉たばこ粉砕物）等が挙げられる。特定の粒径のたばこ粒子を用いることで、たばこシートの密度を低下させることができる。粒径Ｄ９０の上限は限定されないが、取扱い性等の観点から、好ましくは５ｍｍ以下、より好ましくは３ｍｍ以下、さらに好ましくは１ｍｍ以下である。粒径Ｄ９０の下限は限定されないが、好ましくは２００μｍ以上、より好ましくは３００μｍ以上、さらに好ましくは４００μｍ以上、特に好ましくは５００μｍ以上である。また平均粒径Ｄ５０の上限は、好ましくは１５００μｍ以下、１０００μｍ以下、５００μｍ以下であり、その下限は、好ましくは５０μｍ以上、より好ましくは１００μｍ以上、さらに好ましくは１２０μｍ以上である。粉砕は、公知の粉砕機を用いて行うことができ、乾式粉砕、湿式粉砕のいずれであってもよい。したがって、葉たばこ粉砕物は葉たばこ粒子とも称される。本発明において粒径は、レーザ回折・散乱法により求められ、具体的にはレーザ回折式粒子径分布測定装置（例えば、堀場製作所　ＬＡ－９５０）を用いて測定される。また、たばこの種類は限定されず、黄色種、バーレー種、オリエント種、在来種、および、その他のニコチアナ・タバカム系品種やニコチアナ・ルスチカ系品種等を用いることができる。たばこシートにおけるたばこ粒子の量は、特に限定されないが、乾燥重量で、好ましくは５０～９５重量％、より好ましくは６０～９０重量％である。 (2) Tobacco particles The tobacco sheet of the present invention contains tobacco particles as a tobacco material. Tobacco particles are particulate tobacco-derived materials, and examples thereof include particles (crushed leaf tobacco) obtained by crushing leaf tobacco. By using tobacco particles having a specific particle size, the density of the tobacco sheet can be reduced. The upper limit of the particle size D90 is not limited, but is preferably 5 mm or less, more preferably 3 mm or less, still more preferably 1 mm or less from the viewpoint of handleability and the like. The lower limit of the particle size D90 is not limited, but is preferably 200 μm or more, more preferably 300 μm or more, still more preferably 400 μm or more, and particularly preferably 500 μm or more. The upper limit of the average particle size D50 is preferably 1500 μm or less, 1000 μm or less, and 500 μm or less, and the lower limit thereof is preferably 50 μm or more, more preferably 100 μm or more, and further preferably 120 μm or more. The pulverization can be performed using a known pulverizer, and may be either dry pulverization or wet pulverization. Therefore, the crushed leaf tobacco is also referred to as leaf tobacco particles. In the present invention, the particle size is determined by a laser diffraction / scattering method, and specifically, it is measured using a laser diffraction type particle size distribution measuring device (for example, LA-950 manufactured by HORIBA, Ltd.). Further, the type of tobacco is not limited, and yellow varieties, Burley varieties, Orient varieties, native varieties, and other Nicotiana-Tabacam varieties, Nicotiana rustica varieties, and the like can be used. The amount of tobacco particles in the tobacco sheet is not particularly limited, but is preferably 50 to 95% by weight, more preferably 60 to 90% by weight in terms of dry weight.
（３）エアロゾル生成基材
　たばこシートはエアロゾル生成基材を含んでいてもよい。エアロゾル生成基材とは、加熱により気化し冷却されてエアロゾルを生成するあるいは霧化によってエアロゾルを生成する材料である。エアロゾル生成基材としては公知のものを用いることができるが、その例としてはグリセリン、またはプロピレングリコール（ＰＧ）等の多価アルコール；ならびにトリエチルシトレート（ＴＥＣ）、またはトリアセチン等の沸点が１００℃を超えるものが挙げられる。たばこシートにおけるエアロゾル生成基材の量は、乾燥重量（混入している水を除いた重量、以下同様）で、好ましくは１～４０重量％、より好ましくは１０～２０重量％である。エアロゾル生成基材の量が上限値を超えるとたばこシートの製造が困難となるおそれがあり、下限値未満であると煙感量が低下するおそれがある。 (3) Aerosol-producing base material The tobacco sheet may contain an aerosol-forming base material. The aerosol-forming substrate is a material that is vaporized and cooled by heating to form an aerosol, or is atomized to produce an aerosol. Known aerosol-forming substrates can be used, such as polyhydric alcohols such as glycerin or propylene glycol (PG); and triethylcitrate (TEC) or triacetin having a boiling point of 100 ° C. There are more than. The amount of the aerosol-forming base material in the tobacco sheet is a dry weight (weight excluding mixed water, the same applies hereinafter), preferably 1 to 40% by weight, and more preferably 10 to 20% by weight. If the amount of the aerosol-forming base material exceeds the upper limit value, it may be difficult to manufacture the tobacco sheet, and if it is less than the lower limit value, the amount of smoke sensation may decrease.
（４）乳化剤
　たばこシートは乳化剤を含んでいてもよい。乳化剤は親油性であるエアロゾル生成基材と親水性であるたばこ材料の親和性を高める。よって、特に親油性のエアロゾル生成基材を用いる場合に乳化剤の添加は効果的である。乳化剤としては公知のものを用いることができるが、その例としては８～１８のＨＬＢ値を有する乳化剤が挙げられる。乳化剤の量は、特に限定されないがたばこシート１００重量部に対して、乾燥重量で、好ましくは０．１～３重量部、より好ましくは１～２重量部である。 (4) Emulsifier The tobacco sheet may contain an emulsifier. The emulsifier enhances the affinity between the lipophilic aerosol-forming substrate and the hydrophilic tobacco material. Therefore, the addition of an emulsifier is particularly effective when a lipophilic aerosol-forming substrate is used. Known emulsifiers can be used, and examples thereof include emulsifiers having an HLB value of 8 to 18. The amount of the emulsifier is not particularly limited, but is preferably 0.1 to 3 parts by weight, more preferably 1 to 2 parts by weight, based on 100 parts by weight of the tobacco sheet.
（５）繊維
　本発明のたばこシートは、一態様においてたばこ由来の繊維およびたばこ以外の材料（例えばセルロース）に由来する繊維を含まない。本態様では、これらの繊維によって喫味に雑味等の望ましくない影響が及ぼされることを回避できる。ただし、完全に繊維を排除することは現実的でないので、たばこシートにおける前記繊維の量は、乾燥重量で好ましくは１．０重量％以下、より好ましくは０．５重量％以下である。また、本発明のたばこシートは、別態様においてたばこ由来の繊維またはたばこ以外の材料に由来する繊維を含む。特にたばこ粒子の粒度が高くなるとシートが脆くなる傾向があるので、たばこシートは前記繊維を含むことが好ましい。この場合、前記シートの含有量（合計）は乾燥重量で０．５～２．０重量％である。本態様においては当該繊維によってたばこシートの強度が向上し、喫味と強度のバランスに優れる。本発明においてたばこ由来の繊維とは、たばこ原料を、グラインダー等を用いた叩解によってパルプ化したものをいい、前述のたばこ粒子とは異なる。 (5) Fiber The tobacco sheet of the present invention does not contain fibers derived from tobacco and fibers derived from materials other than tobacco (for example, cellulose) in one embodiment. In this embodiment, it is possible to prevent these fibers from exerting an undesired effect such as miscellaneous taste on the taste. However, since it is not realistic to completely eliminate the fibers, the amount of the fibers in the tobacco sheet is preferably 1.0% by weight or less, more preferably 0.5% by weight or less in terms of dry weight. In addition, the tobacco sheet of the present invention contains, in another aspect, fibers derived from tobacco or fibers derived from a material other than tobacco. In particular, as the particle size of the tobacco particles increases, the sheet tends to become brittle, so that the tobacco sheet preferably contains the fibers. In this case, the content (total) of the sheets is 0.5 to 2.0% by weight in dry weight. In this embodiment, the fiber improves the strength of the tobacco sheet and is excellent in the balance between taste and strength. In the present invention, the tobacco-derived fiber means a fiber obtained by pulping a tobacco raw material by beating with a grinder or the like, and is different from the above-mentioned tobacco particles.
（６）香料
　たばこシートは香料を含んでいてもよい。香料とは、香りや風味を提供する物質である。香料は天然香料であってもよいし合成香料であってもよい。香料として１種類の香料を用いてもよいし複数種類の香料の混合物を用いてもよい。香料として、喫煙物品において一般に使用される任意の香料を使用することができるが、その具体例は後述する。香料は、喫煙物品が好ましい香りや風味を提供することができるような量で、喫煙物品用シートに含むことができ、例えば、その量はたばこシート中、好ましくは１～３０重量％、より好ましくは２～２０重量％である。 (6) Fragrance The tobacco sheet may contain a fragrance. A fragrance is a substance that provides a scent and flavor. The fragrance may be a natural fragrance or a synthetic fragrance. One kind of fragrance may be used as a fragrance, or a mixture of a plurality of kinds of fragrances may be used. As the fragrance, any fragrance generally used in smoking articles can be used, and specific examples thereof will be described later. The fragrance can be contained in the smoking article sheet in an amount such that the smoking article can provide a preferable scent and flavor, for example, the amount thereof is preferably 1 to 30% by weight in the tobacco sheet, more preferably. Is 2 to 20% by weight.
　当該香料の種類は、特に限定されず、良好な香料感の付与の観点から、アセトアニソール、アセトフェノン、アセチルピラジン、２－アセチルチアゾール、アルファルファエキストラクト、アミルアルコール、酪酸アミル、トランス－アネトール、スターアニス油、リンゴ果汁、ペルーバルサム油、ミツロウアブソリュート、ベンズアルデヒド、ベンゾインレジノイド、ベンジルアルコール、安息香酸ベンジル、フェニル酢酸ベンジル、プロピオン酸ベンジル、２，３－ブタンジオン、２－ブタノール、酪酸ブチル、酪酸、カラメル、カルダモン油、キャロブアブソリュート、β－カロテン、ニンジンジュース、Ｌ－カルボン、β－カリオフィレン、カシア樹皮油、シダーウッド油、セロリーシード油、カモミール油、シンナムアルデヒド、ケイ皮酸、シンナミルアルコール、ケイ皮酸シンナミル、シトロネラ油、ＤＬ－シトロネロール、クラリセージエキストラクト、ココア、コーヒー、コニャック油、コリアンダー油、クミンアルデヒド、ダバナ油、δ－デカラクトン、γ－デカラクトン、デカン酸、ディルハーブ油、３，４－ジメチル－１，２－シクロペンタンジオン、４，５－ジメチル－３－ヒドロキシ－２，５－ジヒドロフラン－２－オン、３，７－ジメチル－６－オクテン酸、２，３－ジメチルピラジン、２，５－ジメチルピラジン、２，６－ジメチルピラジン、２－メチル酪酸エチル、酢酸エチル、酪酸エチル、ヘキサン酸エチル、イソ吉草酸エチル、乳酸エチル、ラウリン酸エチル、レブリン酸エチル、エチルマルトール、オクタン酸エチル、オレイン酸エチル、パルミチン酸エチル、フェニル酢酸エチル、プロピオン酸エチル、ステアリン酸エチル、吉草酸エチル、エチルバニリン、エチルバニリングルコシド、２－エチル－３，（５または６）－ジメチルピラジン、５－エチル－３－ヒドロキシ－４－メチル－２（５Ｈ）－フラノン、２－エチル－３－メチルピラジン、ユーカリプトール、フェネグリークアブソリュート、ジェネアブソリュート、リンドウ根インフュージョン、ゲラニオール、酢酸ゲラニル、ブドウ果汁、グアヤコール、グァバエキストラクト、γ－ヘプタラクトン、γ－ヘキサラクトン、ヘキサン酸、シス－３－ヘキセン－１－オール、酢酸ヘキシル、ヘキシルアルコール、フェニル酢酸ヘキシル、ハチミツ、４－ヒドロキシ－３－ペンテン酸ラクトン、４－ヒドロキシ－４－（３－ヒドロキシ－１－ブテニル）－３，５，５－トリメチル－２－シクロヘキセン－１－オン、４－（パラ－ヒドロキシフェニル）－２－ブタノン、４－ヒドロキシウンデカン酸ナトリウム、インモルテルアブソリュート、β－イオノン、酢酸イソアミル、酪酸イソアミル、フェニル酢酸イソアミル、酢酸イソブチル、フェニル酢酸イソブチル、ジャスミンアブソリュート、コーラナッツティンクチャー、ラブダナム油、レモンテルペンレス油、カンゾウエキストラクト、リナロール、酢酸リナリル、ロベージ根油、マルトール、メープルシロップ、メンソール、メントン、酢酸Ｌ－メンチル、パラメトキシベンズアルデヒド、メチル－２－ピロリルケトン、アントラニル酸メチル、フェニル酢酸メチル、サリチル酸メチル、４’－メチルアセトフェノン、メチルシクロペンテノロン、３－メチル吉草酸、ミモザアブソリュート、トウミツ、ミリスチン酸、ネロール、ネロリドール、γ－ノナラクトン、ナツメグ油、δ－オクタラクトン、オクタナール、オクタン酸、オレンジフラワー油、オレンジ油、オリス根油、パルミチン酸、ω－ペンタデカラクトン、ペパーミント油、プチグレインパラグアイ油、フェネチルアルコール、フェニル酢酸フェネチル、フェニル酢酸、ピペロナール、プラムエキストラクト、プロペニルグアエトール、酢酸プロピル、３－プロピリデンフタリド、プルーン果汁、ピルビン酸、レーズンエキストラクト、ローズ油、ラム酒、セージ油、サンダルウッド油、スペアミント油、スチラックスアブソリュート、マリーゴールド油、ティーディスティレート、α－テルピネオール、酢酸テルピニル、５，６，７，８－テトラヒドロキノキサリン、１，５，５，９－テトラメチル－１３－オキサシクロ（８．３．０．０（４．９））トリデカン、２，３，５，６－テトラメチルピラジン、タイム油、トマトエキストラクト、２－トリデカノン、クエン酸トリエチル、４－（２，６，６－トリメチル－１－シクロヘキセニル）２－ブテン－４－オン、２，６，６－トリメチル－２－シクロヘキセン－１，４－ジオン、４－（２，６，６－トリメチル－１，３－シクロヘキサジエニル）２－ブテン－４－オン、２，３，５－トリメチルピラジン、γ－ウンデカラクトン、γ－バレロラクトン、バニラエキストラクト、バニリン、ベラトルアルデヒド、バイオレットリーフアブソリュート、Ｎ－エチル－ｐ－メンタン－３－カルボアミド（ＷＳ－３）、エチル－２－（ｐ－メンタン－３－カルボキサミド）アセテート（ＷＳ－５）、糖（スクロース、フルクトース等）、ココア粉、キャロブ粉、コリアンダー粉、リコリス粉、オレンジピール粉、ローズピップ粉、カモミールフラワー（ｆｌｏｗｅｒ）粉、レモンバーベナ粉、ペパーミント粉、リーフ粉、スペアミント粉、紅茶粉、天然植物性香料（例えば、ジャスミン油、レモン油、ベチバー油、ロベージ油）、エステル類（例えば、酢酸メンチル、プロピオン酸イソアミル、等）、およびアルコール類（例えば、フェニルエチルアルコール、シス－６－ノネン－１－オール、等）、が挙げられる。これらの香料は１種を単独で、または２種以上を併用してもよい。 The type of the fragrance is not particularly limited, and from the viewpoint of imparting a good fragrance feeling, acetoanisol, acetophenone, acetylpyrazine, 2-acetylthiazole, alfalfa extract, amyl alcohol, amyl butyrate, trans-annetol, star anis Oil, apple juice, peruvian balsam oil, beeswax absolute, benzaldehyde, benzoin resinoid, benzyl alcohol, benzyl benzoate, benzyl phenylacetate, benzyl propionate, 2,3-butandione, 2-butanol, butyl butyrate, butyric acid, caramel, cardamon Oil, Carobu Absolute, β-Carotene, Carrot Juice, L-Carbon, β-Cariophyllene, Cassia Bark Oil, Cedarwood Oil, Cellory Seed Oil, Chamomile Oil, Cinnamaldehyde, Cayhide Acid, Cinnamyl Alcohol, Cinnamyl Acid Cinnamyl, Citronella oil, DL-citronolol, clarisage extract, cocoa, coffee, cognac oil, coriander oil, cuminaldehyde, davana oil, δ-decalactone, γ-decalactone, decanoic acid, dillherb oil, 3,4-dimethyl-1, 2-Cyclopentandione, 4,5-dimethyl-3-hydroxy-2,5-dihydrofuran-2-one, 3,7-dimethyl-6-octenoic acid, 2,3-dimethylpyrazine, 2,5-dimethyl Pyrazine, 2,6-dimethylpyrazine, ethyl 2-methylbutyrate, ethyl acetate, ethyl butyrate, ethyl hexanoate, ethyl isovalerate, ethyl lactate, ethyl laurate, ethyl levulinate, ethyl maltol, ethyl octanate, oleic acid Ethyl, ethyl palmitate, ethyl phenylacetate, ethyl propionate, ethyl stearate, ethyl valerate, ethyl vanillin, ethyl vanillin glucoside, 2-ethyl-3, (5 or 6) -dimethylpyrazine, 5-ethyl-3- Hydroxy-4-methyl-2 (5H) -Franone, 2-Ethyl-3-methylpyrazine, Eucalyptor, Fenegrik Absolute, Gene Absolute, Lindou Root Infusion, Geraniol, Geranyl Acetate, Grape Juice, Guayacol, Guava Extract , Γ-Heptalactone, γ-Hexalactone, Hexanoic acid, cis-3-hexene-1-ol, hexyl acetate, hexyl alcohol, phenylacetate hexyl, honey, 4-hydroxy-3-pentenoic acid lactone, 4-hydroxy- 4- ( 3-Hydroxy-1-butenyl) -3,5,5-trimethyl-2-cyclohexene-1-one, 4- (para-hydroxyphenyl) -2-butanone, sodium 4-hydroxyundecanoate, immortel absolute, β-ionone, isoamyl acetate, isoamyl butyrate, isoamyl phenylacetate, isobutyl acetate, isobutyl phenylacetate, jasmine absolute, cola nut tincture, rabdanum oil, lemon terpenless oil, kanzo extract, linalol, linaryl acetate, lobage root oil, Martor, Maple Syrup, Mensole, Menton, L-Mentyl Acetate, Paramethoxybenzaldehyde, Methyl-2-pyrrylketone, Methyl Anthranilate, Methyl Phenylacetate, Methyl Salicylate, 4'-Methylacetophenone, Methylcyclopentenolone, 3-Methylkichi Herb acid, mimosa absolute, toumitsu, myristic acid, nerol, nerolidol, γ-nonalactone, nutmeg oil, δ-octalactone, octanal, octanic acid, orange flower oil, orange oil, oris root oil, palmitic acid, ω-pentadeca Lactone, peppermint oil, petitgrain paraguay oil, phenethyl alcohol, phenylacetate phenethyl, phenylacetic acid, piperonal, plum extract, propenylguaetol, propyl acetate, 3-propylidenephthalide, prune juice, pyruvate, raisin extract , Rose oil, lamb liquor, sage oil, sandalwood oil, spearmint oil, stylux absolute, marigold oil, tea distillate, α-terpineol, terpinyl acetate, 5,6,7,8-tetrahydroquinoxaline, 1,5 , 5,9-Tetramethyl-13-oxacyclo (8.3.0.0 (4.9)) tridecane, 2,3,5,6-tetramethylpyrazine, thyme oil, tomato extract, 2-tridecanone, Triethyl citrate, 4- (2,6,6-trimethyl-1-cyclohexenyl) 2-butene-4-one, 2,6,6-trimethyl-2-cyclohexene-1,4-dione, 4- (2) , 6,6-trimethyl-1,3-cyclohexadienyl) 2-buten-4-one, 2,3,5-trimethylpyrazine, γ-undecalactone, γ-valerolactone, vanilla extract, vanillin, vera Toraldehyde, Violet Leaf Absolute, N-Ethyl-p -Mentan-3-carbamide (WS-3), ethyl-2- (p-mentan-3-carboxamide) acetate (WS-5), sugar (sucrose, fructose, etc.), cocoa powder, carob powder, coriander powder, licorice Powder, orange peel powder, rose pip powder, chamomile flower powder, lemon verbena powder, peppermint powder, leaf powder, spearmint powder, black tea powder, natural vegetable fragrances (eg jasmine oil, lemon oil, vetiver oil, lobage) Oils), esters (eg, menthyl acetate, isoamyl propionate, etc.), and alcohols (eg, phenylethyl alcohol, cis-6-nonen-1-ol, etc.). These fragrances may be used alone or in combination of two or more.
（７）たばこシートの特性および形態
　１）密度
　本発明のたばこシートは、１．０ｇ／ｃｍ３以下の密度を有する。このような低い密度を有するたばこシートは、吸引初期において十分な香味成分のデリバリーを達成できる。この理由は限定されないが、低密度のたばこシートによって喫煙物品におけるたばこ充填物の充填密度を低減できるので、重量当たりの受熱量を増やすことができるためと推察される。また、充填密度の低減によってコストダウンも達成できる。これらの観点から、前記密度は好ましくは０．９５ｇ／ｃｍ３以下、より好ましくは０．７５ｇ／ｃｍ３以下である。密度の下限は限定されないが、強度等の観点から好ましくは０．５ｇ／ｃｍ３以上である。本発明において密度は坪量（単位面積当たりの重量）と厚みから算出される。本発明のたばこシートの通気度は、好ましくは０コレスタ単位である。 (7) Characteristics and Form of Tobacco Sheet 1) Density The tobacco sheet of the present invention has a density of 1.0 g / cm 3 or less. A tobacco sheet having such a low density can achieve sufficient delivery of flavor components in the initial stage of suction. The reason for this is not limited, but it is presumed that the low-density tobacco sheet can reduce the filling density of the tobacco filling in the smoking article, so that the amount of heat received per weight can be increased. In addition, cost reduction can be achieved by reducing the filling density. From these viewpoints, the density is preferably 0.95 g / cm 3 or less, more preferably 0.75 g / cm 3 or less. The lower limit of the density is not limited, but is preferably 0.5 g / cm 3 or more from the viewpoint of strength and the like. In the present invention, the density is calculated from the basis weight (weight per unit area) and the thickness. The air permeability of the tobacco sheet of the present invention is preferably in the unit of 0 cholesterol.
　２）厚さ
　たばこシートの厚さは限定されないが、上限は、好ましくは１５００μｍ以下、より好ましくは１０００μｍ以下、さらに好ましくは５００μｍ以下である。また下限は、好ましくは２０μｍ以上、より好ましくは１００μｍ以上、さらに好ましくは１５０μｍ以上である。 2) Thickness The thickness of the tobacco sheet is not limited, but the upper limit is preferably 1500 μm or less, more preferably 1000 μm or less, still more preferably 500 μm or less. The lower limit is preferably 20 μm or more, more preferably 100 μm or more, and further preferably 150 μm or more.
（８）たばこセグメント
　たばこシートから、喫煙物品に用いるたばこセグメントを製造できる。たばこセグメントは、一態様において筒状のラッパーを備え、当該ラッパー内に渦巻き状に充填されたたばこシートを備える（図１（Ａ）参照）。図中、２０Ａはたばこセグメント、１はたばこシート、２２はラッパーであり、通常は紙である。当該たばこセグメントは好ましくはロッド状であり、その長さは１５～８０ｍｍ、直径は５～１０ｍｍ程度とすることができる。さらに図１（Ａ）に記載のたばこセグメント２０Ａを切断して、アスペクト比（長さ／直径）が０．５～１．２程度とすることもできる（図１（Ｂ）参照）。 (8) Tobacco segment A tobacco segment used for smoking articles can be produced from a tobacco sheet. The tobacco segment comprises, in one aspect, a tubular wrapper and a tobacco sheet filled in the wrapper in a spiral shape (see FIG. 1A). In the figure, 20A is a tobacco segment, 1 is a tobacco sheet, 22 is a wrapper, and is usually paper. The tobacco segment is preferably rod-shaped, having a length of 15 to 80 mm and a diameter of about 5 to 10 mm. Further, the tobacco segment 20A shown in FIG. 1 (A) can be cut to have an aspect ratio (length / diameter) of about 0.5 to 1.2 (see FIG. 1 (B)).
　たばこセグメント２０Ａは、別態様において筒状のラッパー２２を備え、当該ラッパー内に折畳んで充填されたたばこシート１を備える。折り畳みによって生じた稜線はセグメントの長手方向に略平行である（図１（Ｃ）参照）。当該たばこセグメント２０Ａは好ましくはロッド状であり、その長さは１５～８０ｍｍ、直径は５～１０ｍｍ程度とすることができる。この態様においては、たばこシート１に予めプリーツ加工またはクリンプ加工等の表面しわ加工が施されていることが好ましい。 The tobacco segment 20A includes a tubular wrapper 22 in another embodiment, and includes a tobacco sheet 1 folded and filled in the wrapper. The ridges created by folding are substantially parallel to the longitudinal direction of the segment (see FIG. 1 (C)). The tobacco segment 20A is preferably rod-shaped, has a length of 15 to 80 mm and a diameter of about 5 to 10 mm. In this embodiment, it is preferable that the tobacco sheet 1 is previously subjected to surface wrinkling processing such as pleating or crimping.
　たばこセグメント２０Ａは、別態様において筒状のラッパー２２を備え、当該ラッパー内に充填されたたばこシートの裁断片１ｃを備える（図１（Ｄ）参照）。当該たばこセグメント２０Ａは好ましくはロッド状であり、その長さは１５～８０ｍｍ、直径は５～１０ｍｍ程度とすることができる。裁断片のサイズは限定されないが、例えば最長辺の長さを２～２０ｍｍ程度、幅を０．５～１．５ｍｍ程度とすることができる。 The tobacco segment 20A includes a tubular wrapper 22 in another embodiment, and includes a cut piece 1c of a tobacco sheet filled in the wrapper (see FIG. 1 (D)). The tobacco segment 20A is preferably rod-shaped, has a length of 15 to 80 mm and a diameter of about 5 to 10 mm. The size of the cut piece is not limited, but for example, the length of the longest side can be about 2 to 20 mm and the width can be about 0.5 to 1.5 mm.
　たばこセグメント２０Ａは、別態様において筒状のラッパー２２を備え、当該ラッパー内に充填されたストランドタイプ刻を備える（図１（Ｅ）参照）。ストランドタイプ刻は、その長手方向がラッパー２２の長手方向と略平行となるように充填される。ストランドタイプ刻の幅は０．５～１．５ｍｍ程度とすることができる。 The tobacco segment 20A is provided with a tubular wrapper 22 in another embodiment, and is provided with a strand type engraving filled in the wrapper (see FIG. 1 (E)). The strand type engraving is filled so that its longitudinal direction is substantially parallel to the longitudinal direction of the wrapper 22. The width of the strand type engraving can be about 0.5 to 1.5 mm.
　たばこセグメント２０Ａは、別態様において筒状のラッパー２２を備え、当該ラッパー内にランダムに充填された、たばこ刻充填物を備える。たばこ刻は裁刻物でありストランドタイプ刻とは異なる。 The tobacco segment 20A comprises a tubular wrapper 22 in another embodiment, and includes a tobacco engraved filling randomly filled in the wrapper. Tobacco carving is a cut piece and is different from strand type carving.
２．製造方法
　たばこシートは任意の方法で製造されうるが、好ましくは以下の工程を備える方法で製造される。
　少なくとも、たばこ粒子と、バインダーと、媒体とを混練して混合物を調製する工程１。
　前記混合物を圧展またはダイから押出してウェットシートを調製する工程２。
　前記ウェットシートを乾燥する工程３。
　このように圧力をかけて成形されたシートを「圧力成形シート」といい、後述するとおり「圧力成形シート」は「ラミネートシート」と「押出シート」を含む。ラミネートシートとは、混合物を１回以上ローラで目標厚さまで圧展した後に、目標水分量まで乾燥して得たシートである。押出シートとは、混合物をＴダイ等から目標厚さで押出した後に、目標水分量まで乾燥して得たシートである。圧力成形シートにおいて圧展と押出は組み合わせてもよい。例えば、混合物を押出した後にさらに圧展してシートとしてもよい。 2. 2. Manufacturing Method The tobacco sheet can be manufactured by any method, but is preferably manufactured by a method including the following steps.
At least, the step 1 of kneading the tobacco particles, the binder, and the medium to prepare a mixture.
Step 2 to prepare a wet sheet by squeezing or extruding the mixture from a die.
Step 3 of drying the wet sheet.
A sheet formed by applying pressure in this way is referred to as a "pressure molded sheet", and as will be described later, the "pressure molded sheet" includes a "laminated sheet" and an "extruded sheet". The laminated sheet is a sheet obtained by compressing the mixture with a roller at least once to a target thickness and then drying it to a target moisture content. The extruded sheet is a sheet obtained by extruding a mixture from a T-die or the like to a target thickness and then drying it to a target water content. Compression and extrusion may be combined in a pressure molded sheet. For example, the mixture may be extruded and then further compressed to form a sheet.
（１）工程１
　本工程は、たばこ粒子と、バインダーと、媒体とを混練する。必要に応じて、エアロゾル生成基材、乳化剤、または香料を添加することもできる。各成分の配合量は、前述の量を達成できるように調整される。媒体は、好ましくは例えば水や、エタノール等の沸点が１００℃未満である水溶性有機溶媒を主成分とし、より好ましくは水またはエタノールである。 (1) Step 1
In this step, the tobacco particles, the binder, and the medium are kneaded. If desired, aerosol-forming substrates, emulsifiers, or fragrances can be added. The blending amount of each component is adjusted so that the above-mentioned amount can be achieved. The medium is preferably water or a water-soluble organic solvent having a boiling point of less than 100 ° C. such as ethanol as a main component, and more preferably water or ethanol.
　本工程は、各成分を混練することで実施できるが、好ましくは、１）原料（例えば、単葉）の粉砕、２）湿粉の調製、３）混練を経て実施される。
　１）粉砕
　本工程では、前述のとおりの粒径を有する予め粉砕されたたばこ粒子を用いてもよいが、一態様において原料を粗砕し、次いで粉砕機（例えばホソカワミクロン製、ＡＣＭ－５）を用いて微粉砕して、先述の粒径を有するたばこ粒子を調製する。粒径は、マスターサイザー（ｍａｌｖｅｒｎ社製）等のレーザ回折型粒度計を用いて測定される。 This step can be carried out by kneading each component, but is preferably carried out through 1) pulverization of a raw material (for example, a single leaf), 2) preparation of wet powder, and 3) kneading.
1) Crushing In this step, pre-crushed tobacco particles having the above-mentioned particle size may be used, but in one embodiment, the raw material is coarsely crushed, and then a crusher (for example, manufactured by Hosokawa Micron, ACM-5) is used. Tobacco particles having the above-mentioned particle size are prepared by finely grinding using the above-mentioned particles. The particle size is measured using a laser diffraction type particle size meter such as a master sizer (manufactured by Malvern).
　２）湿粉の調製
　粉砕されたたばこ原料（例えば、たばこ粒子）に、バインダー、必要に応じて香料や脂質等の添加剤を加えて混合する。この混合はドライブレンドであることが好ましいので、混合機としてミキサーを用いることが好ましい。次いで、ドライブレンド物に、水等の媒体、必要に応じてグリセリン等のエアロゾル生成基材を添加し、ミキサーで混合し、湿粉（湿潤状態の粉）を調製する。当該湿粉中の媒体の量は、好ましくは２０～８０重量％、さらに好ましくは２０～４０重量％とすることができるが、工程２によって適宜調製される。例えば、工程２で圧展を行う場合、前記媒体の量は２０～６０重量％または２０～５０重量％とすることができ、押出しを行う場合は、２０～８０重量％とすることができる。湿粉の固形分濃度は５０～９０重量％であることが好ましい。特に好ましい態様においては、Ｄ９０が２００μｍ以上のたばこ粒子と、水を含む液体媒体（より好ましくは水からなる液体媒体）とを含有し、水分量が５０重量％以上である湿粉を用いる。 2) Preparation of wet powder Add a binder and, if necessary, additives such as fragrance and lipid to the crushed tobacco raw material (for example, tobacco particles) and mix them. Since this mixing is preferably a dry blend, it is preferable to use a mixer as a mixer. Next, a medium such as water and, if necessary, an aerosol-forming base material such as glycerin are added to the dry blend and mixed with a mixer to prepare a wet powder (wet powder). The amount of the medium in the wet powder can be preferably 20 to 80% by weight, more preferably 20 to 40% by weight, and is appropriately prepared by Step 2. For example, when compression is performed in step 2, the amount of the medium can be 20 to 60% by weight or 20 to 50% by weight, and when extrusion is performed, it can be 20 to 80% by weight. The solid content concentration of the wet powder is preferably 50 to 90% by weight. In a particularly preferable embodiment, a wet powder containing tobacco particles having a D90 of 200 μm or more and a liquid medium containing water (more preferably a liquid medium composed of water) and having a water content of 50% by weight or more is used.
　３）混練
　前記湿粉を、ニーダー（例えば、ダルトン社製ＤＧ－１）を用いて混練する。混練は、全体に媒体がいきわたるまで実施することが好ましい、例えば、目視にて混合物の色が均一になるまで混練りすることが好ましい。 3) Kneading The wet powder is kneaded using a kneader (for example, DG-1 manufactured by Dalton). The kneading is preferably carried out until the medium is completely spread, for example, it is preferable to knead until the color of the mixture becomes uniform visually.
（２）工程２
　本工程では、前記混合物（湿粉）を圧展またはダイから押出してウェットシートを調製する。例えば、混合物を、２枚の基材フィルムに挟み込みながら、カレンダー装置（例えば、由利ロール機械社製）を用いて、所定の厚さ（１００μｍ超）になるまで１対のローラ間に通し、圧展して２枚の基材フィルム間にウェットシートが存在するラミネートを得ることができる。基材フィルムとしてはフッ素系ポリマーフィルム等の非粘着性フィルムが好ましい。ローラによる圧展は複数回実施することができる。また、前記混合物（湿粉）を所定のギャップを設けたダイ（好ましくはＴダイ）から押出して、基材上にウェットシート形成することもできる。基材としては、ガラス板、金属板、プラスチック板などの公知のものを使用できる。押出しには公知の押出機を使用できる。 (2) Step 2
In this step, the mixture (wet powder) is squeezed or extruded from a die to prepare a wet sheet. For example, while sandwiching the mixture between two base films, a calendar device (for example, manufactured by Yuri Roll Machinery Co., Ltd.) is used to pass the mixture between a pair of rollers until it reaches a predetermined thickness (more than 100 μm), and pressurize the mixture. It can be expanded to obtain a laminate in which a wet sheet is present between two base films. As the base film, a non-adhesive film such as a fluoropolymer film is preferable. The pressure expansion by the rollers can be performed multiple times. It is also possible to extrude the mixture (wet powder) from a die (preferably a T die) provided with a predetermined gap to form a wet sheet on the substrate. As the base material, known materials such as a glass plate, a metal plate, and a plastic plate can be used. A known extruder can be used for extrusion.
（３）工程３
　本工程ではウェットシートを乾燥する。例えば、ラミネートにおいては以下の手順で本工程を実施できる。１）一方の基材フィルムを剥離する。２）当該ラミネートを、通風乾燥機を用いて乾燥する。乾燥温度は室温でもよいが、好ましくは５０～１００℃であり、乾燥時間は１～２分とすることができる。３）次いで、残りの基材フィルムを剥離し、さらに前記条件で乾燥してたばこシートを得る。このように乾燥を行うことで、たばこシートが他の基材に接着することを回避できる。このようにして得たたばこシートを「ラミネートシート」ともいう。ラミネートシートは表面が滑らかであり、他の部材と接触した場合に刻こぼれの発生を抑制できるので好ましい。また、本方法は３００μｍ以下のシートの製造に適している。 (3) Step 3
In this step, the wet sheet is dried. For example, in laminating, this step can be carried out by the following procedure. 1) Peel off one of the base films. 2) Dry the laminate using a ventilation dryer. The drying temperature may be room temperature, but is preferably 50 to 100 ° C., and the drying time can be 1 to 2 minutes. 3) Next, the remaining base film is peeled off and further dried under the above conditions to obtain a tobacco sheet. By performing the drying in this way, it is possible to prevent the tobacco sheet from adhering to other base materials. The tobacco sheet obtained in this way is also referred to as a "laminate sheet". The laminated sheet has a smooth surface and is preferable because it can suppress the occurrence of spillage when it comes into contact with other members. Further, this method is suitable for producing a sheet having a thickness of 300 μm or less.
　また、押出成形の場合は、基材上のウェットシートを、風乾または加熱して乾燥する。乾燥条件は前述のとおりである。このようにして得たたばこシートを「押出シート」ともいう。押出シートは表面が滑らかであり、他の部材と接触した場合に刻こぼれの発生を抑制できるので好ましい。本方法は２００μｍ以上のシートの製造に適している。 In the case of extrusion molding, the wet sheet on the base material is air-dried or heated to dry. The drying conditions are as described above. The tobacco sheet thus obtained is also referred to as an "extruded sheet". The extruded sheet is preferable because it has a smooth surface and can suppress the occurrence of spillage when it comes into contact with other members. This method is suitable for producing a sheet having a thickness of 200 μm or more.
３．喫煙物品
　喫煙物品としては、ユーザが吸引により香味を味わう香味吸引物品や、ユーザが鼻腔や口腔に直接製品を含んで香味を味わう無煙たばこ（無煙喫煙物品）が挙げられる。香味吸引物品は、従来のシガレットを代表とする燃焼型喫煙物品と非燃焼型喫煙物品とに大別できる。本発明のたばこシートは、香味吸引物品に好適である。 3. 3. Smoking articles Examples of smoking articles include flavor-sucking articles in which the user tastes the flavor by suction, and smokeless tobacco (smokeless smoking articles) in which the user tastes the flavor by directly including the product in the nasal cavity and oral cavity. The flavor suction article can be roughly classified into a combustion type smoking article typified by a conventional cigarette and a non-combustion type smoking article. The tobacco sheet of the present invention is suitable for a flavor suction article.
　燃焼型香味吸引物品としては、例えば、シガレット、パイプ、キセル、葉巻、またはシガリロなどが挙げられる。 Examples of the combustion-type flavor suction article include cigarettes, pipes, pipes, cigars, cigarillos, and the like.
　非燃焼加熱型香味吸引物品は、当該物品と別体型の加熱装置により加熱されてもよいし、当該物品と一体型の加熱装置により加熱されてもよい。前者の香味吸引物品（別体型）において、非燃焼加熱型香味吸引物品と加熱装置とをまとめて、「非燃焼加熱型喫煙システム」とも称する。以下に非燃焼加熱型喫煙システムの一例を、図２および図３を参照して説明する。 The non-combustion heating type flavor suction article may be heated by a heating device separate from the article, or may be heated by a heating device integrated with the article. In the former flavor suction article (separate type), the non-combustion heating type flavor suction article and the heating device are collectively referred to as a "non-combustion heating type smoking system". An example of a non-combustion heating type smoking system will be described below with reference to FIGS. 2 and 3.
　図２は、非燃焼加熱型喫煙システムの一例を示す断面模式図であり、非燃焼加熱型香味吸引物品２０のたばこセグメント２０Ａ内に、ヒータ１２を挿入する前の状態を示す。使用時には、たばこセグメント２０Ａ内に、ヒータ１２が挿入される。図３は、非燃焼加熱型香味吸引物品２０の断面図である。 FIG. 2 is a schematic cross-sectional view showing an example of a non-combustion heating type smoking system, and shows a state before inserting the heater 12 into the tobacco segment 20A of the non-combustion heating type flavor suction article 20. At the time of use, the heater 12 is inserted into the tobacco segment 20A. FIG. 3 is a cross-sectional view of the non-combustion heating type flavor suction article 20.
　図２に示すとおり、非燃焼加熱型喫煙システムは、非燃焼加熱型香味吸引物品２０と、たばこセグメント２０Ａを内側から加熱する加熱装置１０とを備える。ただし非燃焼加熱型喫煙システムは、図２の構成に限定されない。 As shown in FIG. 2, the non-combustion heating type smoking system includes a non-combustion heating type flavor suction article 20 and a heating device 10 for heating the tobacco segment 20A from the inside. However, the non-combustion heating type smoking system is not limited to the configuration shown in FIG.
　図２に示される加熱装置１０は、ボディ１１と、ヒータ１２とを備える。図示していないが、ボディ１１は電池ユニットと制御ユニットを備えていてもよい。ヒータ１２は電気抵抗によるヒータであることができ、たばこセグメント２０Ａ内に挿入されて、たばこセグメント２０Ａを加熱する。 The heating device 10 shown in FIG. 2 includes a body 11 and a heater 12. Although not shown, the body 11 may include a battery unit and a control unit. The heater 12 can be a heater due to electrical resistance and is inserted into the tobacco segment 20A to heat the tobacco segment 20A.
　本発明のたばこシートは、図２に示すようにたばこセグメント２０Ａが内側から加熱される場合に高い効果を奏する。このような加熱方式では、たばこシートとヒータが直接接触するので、シート重量当たりの受熱量をより増やすことができ、吸引初期において十分な香味成分のデリバリーを達成しやすい。しかしながら、非燃焼加熱型香味吸引物品２０の態様はこれに限定されず、別態様においてたばこセグメント２０Ａは外側から加熱される。 The tobacco sheet of the present invention is highly effective when the tobacco segment 20A is heated from the inside as shown in FIG. In such a heating method, since the tobacco sheet and the heater are in direct contact with each other, the amount of heat received per sheet weight can be further increased, and it is easy to achieve sufficient delivery of flavor components at the initial stage of suction. However, the aspect of the non-combustion heating type flavor suction article 20 is not limited to this, and in another aspect, the tobacco segment 20A is heated from the outside.
　加熱装置１０による加熱温度は特に限定されないが、４００℃以下であることが好ましく、５０～４００℃であることがより好ましく、１５０～３５０℃であることがさらに好ましい。加熱温度とは加熱装置１０のヒータ１２の温度を指す。 The heating temperature by the heating device 10 is not particularly limited, but is preferably 400 ° C. or lower, more preferably 50 to 400 ° C., and even more preferably 150 to 350 ° C. The heating temperature refers to the temperature of the heater 12 of the heating device 10.
　図３に示すとおり、非燃焼加熱型香味吸引物品２０（以下、単に「香味吸引物品２０」と称する）は、円柱形状を有する。香味吸引物品２０の円周の長さは、１６～２７ｍｍであることが好ましく、２０～２６ｍｍであることがより好ましく、２１～２５ｍｍであることがさらに好ましい。香味吸引物品２０の全長（水平方向の長さ）は特に限定されないが、４０～９０ｍｍであることが好ましく、５０～７５ｍｍであることがより好ましく、５０～６０ｍｍであることがさらに好ましい。 As shown in FIG. 3, the non-combustion heating type flavor suction article 20 (hereinafter, simply referred to as “flavor suction article 20”) has a cylindrical shape. The circumference of the flavor suction article 20 is preferably 16 to 27 mm, more preferably 20 to 26 mm, and even more preferably 21 to 25 mm. The total length (horizontal length) of the flavor suction article 20 is not particularly limited, but is preferably 40 to 90 mm, more preferably 50 to 75 mm, and even more preferably 50 to 60 mm.
　香味吸引物品２０は、たばこセグメント２０Ａと、吸口を構成するフィルター部２０Ｃと、これらを連結する連結部２０Ｂとから構成される。 The flavor suction article 20 is composed of a cigarette segment 20A, a filter portion 20C constituting a mouthpiece, and a connecting portion 20B connecting these.
　たばこセグメント２０Ａは、円柱状であり、その全長（軸方向の長さ）は、例えば、５～１００ｍｍであることが好ましく、１０～５０ｍｍであることがより好ましく、１０～２５ｍｍであることがさらに好ましい。たばこセグメント２０Ａの断面の形状は特に限定されないが、例えば円形、楕円形、多角形等とすることができる。 The tobacco segment 20A is columnar, and its total length (length in the axial direction) is preferably, for example, 5 to 100 mm, more preferably 10 to 50 mm, and further preferably 10 to 25 mm. preferable. The shape of the cross section of the tobacco segment 20A is not particularly limited, but may be, for example, a circle, an ellipse, a polygon, or the like.
　たばこセグメント２０Ａは、たばこシートまたはこれに由来する材料２１と、その周囲に巻かれたラッパー２２とを有する。また、ラッパー２２は、本発明のたばこシート１であってもよい。 The tobacco segment 20A has a tobacco sheet or a material 21 derived from the tobacco sheet, and a wrapper 22 wrapped around the tobacco sheet 20A. Further, the wrapper 22 may be the tobacco sheet 1 of the present invention.
　フィルター部２０Ｃは、円柱形をなしている。フィルター部２０Ｃは、酢酸セルロースアセテート繊維が充填されて構成されたロッド状の第１セグメント２５と、同じく酢酸セルロースアセテート繊維が充填されて構成されたロッド状の第２セグメント２６とを有する。第１セグメント２５は、たばこセグメント２０Ａ側に位置している。第１セグメント２５は、中空部を有していてもよい。第２セグメント２６は、吸口側に位置している。第２セグメント２６は、中実である。第１セグメント２５は、第１充填層（酢酸セルロースアセテート繊維）２５ａと、第１充填層２５ａの周囲に巻かれたインナープラグラッパー２５ｂとにより構成される。第２セグメント２６は、第２充填層（酢酸セルロースアセテート繊維）２６ａと、第２充填層２６ａの周囲に巻かれたインナープラグラッパー２６ｂとにより構成される。第１セグメント２５および第２セグメント２６は、アウタープラグラッパー２７によって連結されている。アウタープラグラッパー２７は、酢酸ビニルエマルジョン系接着剤等によって第１セグメント２５および第２セグメント２６に接着されている。 The filter unit 20C has a cylindrical shape. The filter unit 20C has a rod-shaped first segment 25 filled with cellulose acetate acetate fiber and a rod-shaped second segment 26 also filled with cellulose acetate acetate fiber. The first segment 25 is located on the tobacco segment 20A side. The first segment 25 may have a hollow portion. The second segment 26 is located on the mouthpiece side. The second segment 26 is solid. The first segment 25 is composed of a first packed layer (cellulose acetate acetate fiber) 25a and an inner plug wrapper 25b wound around the first packed layer 25a. The second segment 26 is composed of a second packed layer (cellulose acetate acetate fiber) 26a and an inner plug wrapper 26b wound around the second packed layer 26a. The first segment 25 and the second segment 26 are connected by an outer plug wrapper 27. The outer plug wrapper 27 is adhered to the first segment 25 and the second segment 26 with a vinyl acetate emulsion-based adhesive or the like.
　フィルター部２０Ｃの長さを例えば１０～３０ｍｍ、連結部２０Ｂの長さを例えば１０～３０ｍｍ、第１セグメント２５の長さを例えば５～１５ｍｍ、第２セグメント２６の長さを例えば５～１５ｍｍとすることができる。これら個々のセグメントの長さは、一例であり、製造適性、要求品質、たばこセグメント２０Ａの長さ等に応じて、適宜変更できる。 The length of the filter portion 20C is, for example, 10 to 30 mm, the length of the connecting portion 20B is, for example, 10 to 30 mm, the length of the first segment 25 is, for example, 5 to 15 mm, and the length of the second segment 26 is, for example, 5 to 15 mm. can do. The length of each of these individual segments is an example, and can be appropriately changed depending on the manufacturing aptitude, the required quality, the length of the tobacco segment 20A, and the like.
　例えば、第１セグメント２５（センターホールセグメント）は、１つまたは複数の中空部を有する第１充填層２５ａと、第１充填層２５ａを覆うインナープラグラッパー２５ｂとで構成される。第１セグメント２５は、第２セグメント２６の強度を高める機能を有する。第１セグメント２５の第１充填層２５ａは、例えば酢酸セルロース繊維が高密度で充填されている。この酢酸セルロース繊維には、トリアセチンを含む可塑剤が酢酸セルロースの質量に対して、例えば６～２０質量％添加されて硬化されている。第１セグメント２５の中空部は、例えば内径φ１．０～φ５．０ｍｍである。 For example, the first segment 25 (center hole segment) is composed of a first packed layer 25a having one or more hollow portions and an inner plug wrapper 25b covering the first packed layer 25a. The first segment 25 has a function of increasing the strength of the second segment 26. The first packed layer 25a of the first segment 25 is filled with, for example, cellulose acetate fibers at a high density. A plasticizer containing triacetin is added to the cellulose acetate fiber in an amount of, for example, 6 to 20% by mass based on the mass of cellulose acetate and cured. The hollow portion of the first segment 25 has, for example, an inner diameter of φ1.0 to φ5.0 mm.
　第１セグメント２５の第１充填層２５ａは、例えば、比較的に高い繊維充填密度で構成されてもよく、あるいは後述する第２セグメント２６の第２充填層２６ａの繊維充填密度と同等であってもよい。このため、吸引時には、空気やエアロゾルが中空部のみを流れることになり、第１充填層２５ａには空気やエアロゾルがほとんど流れない。例えば、第２セグメント２６において、エアロゾル成分の濾過による減少を少なくしたい場合には、例えば第２セグメント２６の長さを短くして、その分だけ第１セグメント２５を長くすることもできる。 The first packed layer 25a of the first segment 25 may be composed of, for example, a relatively high fiber filling density, or may be equivalent to the fiber filling density of the second packed layer 26a of the second segment 26 described later. May be good. Therefore, at the time of suction, air or aerosol flows only in the hollow portion, and almost no air or aerosol flows in the first packed bed 25a. For example, in the second segment 26, when it is desired to reduce the decrease due to the filtration of the aerosol component, for example, the length of the second segment 26 can be shortened and the first segment 25 can be lengthened by that amount.
　短縮した第２セグメント２６を第１セグメント２５で置き換えることは、エアロゾル成分のデリバリー量を増大させるために有効である。第１セグメント２５の第１充填層２５ａが繊維充填層であることから、使用時の外側からの触り心地は、使用者に違和感を生じさせることがない。 Replacing the shortened second segment 26 with the first segment 25 is effective for increasing the delivery amount of the aerosol component. Since the first packed layer 25a of the first segment 25 is a fiber packed layer, the feeling of touch from the outside during use does not cause a sense of discomfort to the user.
　第２セグメント２６は、第２充填層２６ａと、第２充填層２６ａを覆うインナープラグラッパー２６ｂとで構成される。第２セグメント２６（フィルターセグメント）は、酢酸セルロース繊維が一般的な密度で充填されており、一般的なエアロゾル成分の濾過性能を有する。 The second segment 26 is composed of a second packed layer 26a and an inner plug wrapper 26b that covers the second packed layer 26a. The second segment 26 (filter segment) is filled with cellulose acetate fibers at a general density and has the filtering performance of a general aerosol component.
　第１セグメント２５と第２セグメント２６との間で、たばこセグメント２０Ａから放出されるエアロゾル（主流煙）をろ過するろ過性能を異ならせてもよい。第１セグメント２５および第２セグメント２６の少なくとも一方に、香料を含ませてもよい。フィルター部２０Ｃの構造は任意であり、上記のような複数のセグメントを有する構造であってもよいし、単一のセグメントによって構成されていてもよい。またフィルター部２０Ｃは、１つのセグメントで構成されてもよい。この場合、フィルター部２０Ｃは、第１セグメントまたは第２セグメントのいずれで構成されていてもよい。 The filtration performance for filtering the aerosol (mainstream smoke) emitted from the tobacco segment 20A may be different between the first segment 25 and the second segment 26. At least one of the first segment 25 and the second segment 26 may contain a fragrance. The structure of the filter unit 20C is arbitrary, and may be a structure having a plurality of segments as described above, or may be composed of a single segment. Further, the filter unit 20C may be composed of one segment. In this case, the filter unit 20C may be composed of either a first segment or a second segment.
　連結部２０Ｂは、円筒形をなしている。連結部２０Ｂは、例えば厚紙等によって円筒形に形成された紙管２３を有する。連結部２０Ｂには、エアロゾルを冷却するための冷却部材が充填されていてもよい。冷却部材としては、ポリ乳酸等のポリマーのシートが挙げられ、当該シートを折り畳んで充填することができる。さらに、たばこセグメント２０Ａと連結部２０Ｂの間には、たばこセグメント２０Ａの位置が変動することを抑制する支持部が設けられていてもよい。支持部は、第１セグメント２５のようなセンタホールフィルター等の公知の材料で構成できる。 The connecting portion 20B has a cylindrical shape. The connecting portion 20B has a paper tube 23 formed in a cylindrical shape by, for example, thick paper. The connecting portion 20B may be filled with a cooling member for cooling the aerosol. Examples of the cooling member include a sheet of a polymer such as polylactic acid, and the sheet can be folded and filled. Further, a support portion may be provided between the tobacco segment 20A and the connecting portion 20B to prevent the position of the tobacco segment 20A from fluctuating. The support portion can be made of a known material such as a center hole filter such as the first segment 25.
　ラッパー２８は、たばこセグメント２０Ａ、連結部２０Ｂ、およびフィルター部２０Ｃの外側に円筒形に巻かれて、これらを一体的に連結している。ラッパー２８の一方の面（内面）には、通気孔部２４の付近を除く全面または略全面に酢酸ビニルエマルジョン系接着剤が塗布されている。複数の通気孔部２４は、ラッパー２８によって、たばこセグメント２０Ａ、連結部２０Ｂ、およびフィルター部２０Ｃが一体にされた後に、外側からレーザ加工を施して形成される。 The wrapper 28 is wound in a cylindrical shape on the outside of the tobacco segment 20A, the connecting portion 20B, and the filter portion 20C, and these are integrally connected. A vinyl acetate emulsion-based adhesive is applied to one surface (inner surface) of the wrapper 28 on the entire surface or substantially the entire surface except the vicinity of the ventilation hole portion 24. The plurality of ventilation holes 24 are formed by laser processing from the outside after the tobacco segment 20A, the connecting portion 20B, and the filter portion 20C are integrated by the wrapper 28.
　通気孔部２４は、連結部２０Ｂを厚み方向に貫通するように２以上の貫通孔を有する。２以上の貫通孔は、香味吸引物品２０の中心軸の延長線上から見て、放射状に配置するように形成される。本実施形態では、通気孔部２４は、連結部２０Ｂに設けられているが、フィルター部２０Ｃに設けられていてもよい。また、本実施形態では、通気孔部２４の２以上の貫通孔は、１つの円環上に一定間隔を空けて１列に並んで設けられるが、２つの円環上に一定の間隔を空けて２列に並んで設けられていてもよいし、１列または２列の通気孔部２４が不連続または不規則に並んで設けられていてもよい。ユーザが吸口を咥えて吸引する際に、通気孔部２４を介して主流煙中に外気が取り込まれる。ただし、通気孔部２４は設けられていなくてもよい。 The ventilation hole portion 24 has two or more through holes so as to penetrate the connecting portion 20B in the thickness direction. The two or more through holes are formed so as to be arranged radially when viewed from the extension line of the central axis of the flavor suction article 20. In the present embodiment, the ventilation hole portion 24 is provided in the connecting portion 20B, but may be provided in the filter portion 20C. Further, in the present embodiment, the two or more through holes of the ventilation hole portion 24 are provided side by side in a row at regular intervals on one ring, but at regular intervals on the two rings. The vent holes 24 in one row or two rows may be provided side by side in two rows, or the ventilation holes 24 in one row or two rows may be provided side by side in a discontinuous or irregular manner. When the user holds the mouthpiece and sucks it, the outside air is taken into the mainstream smoke through the ventilation hole portion 24. However, the ventilation hole portion 24 may not be provided.
［実施例１］
　たばこ葉を、粉砕機（ホソカワミクロン製ＡＣＭ－５）を用いてＤ９０が４００μｍとなるように粉砕して葉たばこ粒子を得た。Ｄ９０はマスターサイザー（ｍａｌｖｅｒｎ社製）にて測定した。葉たばこ粒子とバインダーとしてサンローズＦ２０ＨＣ（日本製紙株式会社製セルロースエーテル）とをミキサーを用いてドライブレンドした。次いで、当該ドライブレンド物に、エアロゾル生成基材としてグリセリンと、媒体として水を添加し、ミキサーで混合して湿粉を調製した。各成分の配合は表１に示すとおりである。 [Example 1]
Tobacco leaves were pulverized using a pulverizer (ACM-5 manufactured by Hosokawa Micron) so that D90 was 400 μm to obtain leaf tobacco particles. D90 was measured with a master sizer (manufactured by malvern). Leaf tobacco particles and Sunrose F20HC (cellulose ether manufactured by Nippon Paper Industries, Ltd.) as a binder were dry-blended using a mixer. Next, glycerin as an aerosol-forming base material and water as a medium were added to the dry blend, and the mixture was mixed with a mixer to prepare a wet powder. The composition of each component is as shown in Table 1.
　混練機（ダルトン社製、ＤＧ－１）を用いて、室温にて湿粉を６回混練して混合物を得た。ダイ形状は円方形であり、スクリュー回転数は６０ｒｐｍとした。 Using a kneader (manufactured by Dalton, DG-1), the wet powder was kneaded 6 times at room temperature to obtain a mixture. The die shape was a circular shape, and the screw rotation speed was 60 rpm.
　湿粉を２枚のテフロン（登録商標）フィルム（日東電工株式会社製NITOFLON(R)No.900UL）に挟み、カレンダー装置（由利ロール機械社製）を用いて、所定の厚さ（１００μｍ超）になるまで４段階で圧延して、フィルム／ウェットシート／フィルムの層構造を有する厚さ２５０μｍのラミネートを調製した。１～４段目のロールギャップは、それぞれ１１００μｍ、５００μｍ、３００μｍ、２００μｍとした。４段目のロールギャップは最終的に得られたシートの厚さよりも厚いが、これはローラ間の圧力から解放されたシートが最終厚さ付近まで膨張したためである。 Wet powder is sandwiched between two Teflon (registered trademark) films (NITOFLON (R) No.900UL manufactured by Nitto Denko Corporation) and a calendar device (manufactured by Yuri Roll Machinery Co., Ltd.) is used to obtain a specified thickness (over 100 μm). Rolled in 4 steps until The roll gaps of the first to fourth stages were set to 1100 μm, 500 μm, 300 μm, and 200 μm, respectively. The roll gap of the fourth stage is thicker than the thickness of the finally obtained sheet, because the sheet released from the pressure between the rollers expands to near the final thickness.
　ラミネートから１枚のテフロン（登録商標）フィルムを剥離し、通風乾燥機を用いて８０℃で１～２分乾燥した。次いで、もう１枚のフィルムを剥離し、同条件でウェットシートを乾燥し、本発明のたばこシートを製造し、評価した。 One Teflon (registered trademark) film was peeled off from the laminate and dried at 80 ° C. for 1 to 2 minutes using a ventilation dryer. Then, another film was peeled off, the wet sheet was dried under the same conditions, and the tobacco sheet of the present invention was produced and evaluated.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
　表１の湿粉中重量において、たばこ葉粉砕物、グリセリン、バインダーは乾物重量を示し、水は仕込み重量とたばこ葉粉砕物、グリセリン、およびバインダーに含まれていた水分重量の合計量を示す。 In the wet powder medium weight in Table 1, the tobacco leaf crushed product, glycerin, and the binder indicate the dry matter weight, and the water indicates the total amount of the charged weight and the water content contained in the tobacco leaf crushed product, glycerin, and the binder.
［実施例２、３］
　Ｄ９０が６００μｍおよび８００μｍである葉たばこ粒子をそれぞれ用いた以外は、実施例１と同じ方法でたばこシートを製造し、評価した。 [Examples 2 and 3]
Tobacco sheets were produced and evaluated in the same manner as in Example 1 except that leaf tobacco particles having a D90 of 600 μm and 800 μm were used, respectively.
［比較例１、２］
　Ｄ９０が８０μｍおよび２００μｍである葉たばこ粒子をそれぞれ用いた以外は、実施例１と同じ方法でたばこシートを製造し、評価した。 [Comparative Examples 1 and 2]
Tobacco sheets were produced and evaluated in the same manner as in Example 1 except that leaf tobacco particles having a D90 of 80 μm and 200 μm were used, respectively.
［実施例４］
　Ｄ９０が２００μｍである葉たばこ粒子を用い、かつ湿粉中の水の重量割合を５０ＷＢ重量％とした以外は、実施例１と同じ方法でたばこシートを製造し、評価した。 [Example 4]
Tobacco sheets were produced and evaluated by the same method as in Example 1 except that leaf tobacco particles having a D90 of 200 μm were used and the weight ratio of water in the wet powder was 50 WB% by weight.
［比較例３、４］
　Ｄ９０が２００μｍである葉たばこ粒子を用い、かつ湿粉中の水の重量割合をそれぞれ３０、４０ＷＢ重量％とした以外は、実施例１と同じ方法でたばこシートを製造し、評価した。これらの結果を表３に示す。表３における「湿粉における水の量」は、表１の湿粉中重量割合における水の量に相当する。 [Comparative Examples 3 and 4]
Tobacco sheets were produced and evaluated by the same method as in Example 1 except that leaf tobacco particles having a D90 of 200 μm were used and the weight ratios of water in the wet powder were 30 and 40 WB% by weight, respectively. These results are shown in Table 3. The "amount of water in the wet powder" in Table 3 corresponds to the amount of water in the weight ratio in the wet powder in Table 1.
［実施例５および比較例５］
　定法に従いキャスト法によって、シート密度が０．７５ｇ／ｃｍ３および０．９６ｇ／ｃｍ３であるたばこシート（実施例５）と、シート密度が１．１９ｇ／ｃｍ３であるたばこシート（比較例５）をそれぞれ製造した。得られたたばこシートを用いて喫煙試験を実施した結果、実施例５のシートを用いた喫煙物品は、比較例５のシートを用いた喫煙物品に比べて、吸引初期における香味成分のデリバリーが良好であることが確認された。このことから、実施例１～３で得たたばこシートを用いた喫煙物品も、吸引初期における香味成分のデリバリーが良好であると推察された。 [Example 5 and Comparative Example 5]
A tobacco sheet having a sheet density of 0.75 g / cm 3 and 0.96 g / cm 3 (Example 5) and a tobacco sheet having a sheet density of 1.19 g / cm 3 (Comparative Example 5) by a casting method according to a conventional method. ) Were manufactured respectively. As a result of conducting a smoking test using the obtained tobacco sheet, the smoking article using the sheet of Example 5 has better delivery of the flavor component at the initial stage of suction than the smoking article using the sheet of Comparative Example 5. It was confirmed that. From this, it was inferred that the smoking articles using the tobacco sheets obtained in Examples 1 to 3 also had good delivery of the flavor component in the initial stage of suction.
　以下に、評価方法を説明する。
［喫煙試験］
　図２に示す非燃焼内部加熱型喫煙システムを準備した。次いで吸口端にケンブリッジフィルターを接続した。各例で調製したたばこシートを裁断して刻を調製した。当該刻を長さ１２ｍｍ、直径７ｍｍのラッパー２２内に７０体積％で充填し、たばこセグメント２０Ａを調製した。当該システムを喫煙機による喫煙試験に供した。具体的には、自動喫煙器（Ｂｏｒｇｗａｌｄｔ　ＫＣ　Ｉｎｃ．製Ｒ－２６）を用いて、サンプルを吸煙容量２７．５ｍｌ／秒、吸煙時間２秒／パフ、吸煙頻度２パフ／分、１４パフの条件で自動喫煙し、１パフごとのたばこ煙中粒状物質をケンブリッジフィルター（Ｂｏｒｇｗａｌｄｔ　ＫＣ　Ｉｎｃ．製、ＣＭ－１３３）で捕集した。喫煙試験後のケンブリッジフィルターを、メタノール（和光純薬工業株式会社製、試薬特級）１０ｍＬ中で振盪して分析試料を得た。得られた分析試料１μＬをマイクロシリンジに採取し、ガスクロマトグラフ質量分析（Ａｇｉｌｅｎｔ製ＧＣ－ＭＳＤ、ＧＣ：７８９０Ａ、ＭＳ：５９７５Ｃ）にて分析した。 The evaluation method will be described below.
[Smoking test]
The non-combustion internal heating type smoking system shown in FIG. 2 was prepared. Next, a Cambridge filter was connected to the mouthpiece end. Tobacco sheets prepared in each example were cut to prepare chopped pieces. The time was filled in a wrapper 22 having a length of 12 mm and a diameter of 7 mm in an amount of 70% by volume to prepare a tobacco segment 20A. The system was subjected to a smoking test using a smoking machine. Specifically, using an automatic smoker (R-26 manufactured by Borgwaldt KC Inc.), the sample was sampled under the conditions of a smoke absorption capacity of 27.5 ml / sec, a smoke absorption time of 2 seconds / puff, a smoke absorption frequency of 2 puffs / minute, and 14 puffs. The particulate matter in cigarette smoke per puff was collected by a Cambridge filter (Borgwaldt KC Inc., CM-133). The Cambridge filter after the smoking test was shaken in 10 mL of methanol (manufactured by Wako Pure Chemical Industries, Ltd., special grade reagent) to obtain an analysis sample. 1 μL of the obtained analytical sample was collected in a microsyringe and analyzed by gas chromatograph mass spectrometry (GC-MSD manufactured by Agilent, GC: 7890A, MS: 5975C).
［密度］
　たばこシートを５５ｍｍ四方に切り出し、重量（乾物重量）を測定し、単位面積当たりの重量（坪量）を算出した。また、厚み計（ミツトヨ製）により厚みを計測し、坪量と厚みから密度を算出した。 [density]
A tobacco sheet was cut into 55 mm squares, the weight (dry weight) was measured, and the weight per unit area (basis weight) was calculated. In addition, the thickness was measured with a thickness meter (manufactured by Mitutoyo), and the density was calculated from the basis weight and thickness.
［実施例５Ａ］
　前記実施例５を再現した。すなわち以下のようにしてたばこシートを製造した。
　１）たばこラミナをラボミルで粉砕し、原料粒径Ｄ９０＝３００μｍのたばこ粒子を得た。 
　２）針葉樹パルプをラボミルで解砕した。 
　３）これらの粉末状の材料をＫｅｎミキサーに入れ、撹拌混合した。 
　４）水、グリセリン、およびバインダーとしてサンローズＦ３０ＭＣ（日本製紙株式会社製セルロースエーテル）をディスパーサー（Ｐｒｉｍｉｘ社製）に入れて、３０分間混合した。 
　５）この混合物に、前記パルプを加え、ディスパーサー（Ｐｒｉｍｉｘ社製）で３０分間分散させた。  
　６）前記５）で得た混合物を鉄板にキャストした。 
　７）前記キャスト膜が形成された鉄板を８０℃設定の通風乾燥機に入れ、３０分乾燥した後、鉄板から剥離してたばこシートを得た。 [Example 5A]
The fifth embodiment was reproduced. That is, the tobacco sheet was manufactured as follows.
1) Tobacco lamina was pulverized with a lab mill to obtain tobacco particles having a raw material particle size D90 = 300 μm.
2) Coniferous pulp was crushed with a lab mill.
3) These powdery materials were put into a Ken mixer and mixed by stirring.
4) Water, glycerin, and Sunrose F30MC (cellulose ether manufactured by Nippon Paper Industries, Ltd.) as a binder were placed in a disperser (manufactured by Primix Corporation) and mixed for 30 minutes.
5) The pulp was added to this mixture and dispersed in a disperser (manufactured by Primix) for 30 minutes.
6) The mixture obtained in 5) above was cast on an iron plate.
7) The iron plate on which the cast film was formed was placed in a ventilation dryer set at 80 ° C., dried for 30 minutes, and then peeled from the iron plate to obtain a tobacco sheet.
Figure JPOXMLDOC01-appb-T000002
Figure JPOXMLDOC01-appb-T000002
　表２の湿粉中重量において、たばこ葉粉砕物、グリセリン、バインダーは乾物重量を示し、水は仕込み重量とたばこ葉粉砕物、グリセリン、およびバインダーに含まれていた水分重量の合計量を示す。 In the wet powder medium weight in Table 2, the tobacco leaf crushed product, glycerin, and the binder indicate the dry matter weight, and the water indicates the total amount of the charged weight and the water content contained in the tobacco leaf crushed product, glycerin, and the binder.
［実施例６］ 
　Ｄ９０が８０μｍである葉たばこ粒子を用いた以外は、実施例５Ａと同じ方法でたばこシートを製造し、評価した。これらの結果を表３に示す。 [Example 6]
Tobacco sheets were produced and evaluated in the same manner as in Example 5A, except that leaf tobacco particles having a D90 of 80 μm were used. These results are shown in Table 3.
Figure JPOXMLDOC01-appb-T000003
Figure JPOXMLDOC01-appb-T000003
　１　たばこシート
　１ｃ　たばこシートの裁断片
 
　１０　加熱装置
　１１　ボディ
　１２　ヒータ
 
　２０　非燃焼加熱型香味吸引物品
　２０Ａ　たばこセグメント
　２０Ｂ　連結部
　２０Ｃ　フィルター部
 
　２１　たばこシートまたはこれに由来する材料
　２２　ラッパー
　２３　紙管
　２４　通気孔部
　２５　第１セグメント
　２５ａ　第１充填層
　２５ｂ　インナープラグラッパー
　２６　第２セグメント
　２６ａ　第２充填層
　２６ｂ　インナープラグラッパー
　２７　アウタープラグラッパー
　２８　ラッパー 1 Tobacco sheet 1c Tobacco sheet cut pieces
10 Heating device 11 Body 12 Heater
20 Non-combustion heating type flavor suction article 20A Tobacco segment 20B Connection part 20C Filter part
21 Tobacco sheet or material derived from it 22 Wrapper 23 Paper tube 24 Vent 25 1st segment 25a 1st packed layer 25b Inner plug wrapper 26 2nd segment 26a 2nd packed layer 26b Inner plug wrapper 27 Outer plug wrapper 28 Wrapper

Claims (11)

  1. 　密度が１．０ｇ／ｃｍ３以下である、たばこシート。 Tobacco sheet with a density of 1.0 g / cm 3 or less.
  2. 　圧力成形シートである、請求項１に記載のシート。 The sheet according to claim 1, which is a pressure-formed sheet.
  3. 　Ｄ９０が２００μｍ以上であるたばこ粒子と液体媒体とを含む湿粉であって、湿粉中の水分量が５０重量％以上である湿粉から製造される、請求項１または２に記載のシート。 The sheet according to claim 1 or 2, which is a wet powder containing tobacco particles having a D90 of 200 μm or more and a liquid medium, and is produced from the wet powder having a water content of 50% by weight or more in the wet powder.
  4. 　Ｄ９０が３００μｍ以上であるたばこ粒子を含む、請求項１～３のいずれかに記載のシート。 The sheet according to any one of claims 1 to 3, which contains tobacco particles having a D90 of 300 μm or more.
  5. 　Ｄ９０が５００μｍ以上であるたばこ粒子を含む、請求項４に記載のシート。 The sheet according to claim 4, which contains tobacco particles having a D90 of 500 μm or more.
  6. 　請求項１～５のいずれかに記載のたばこシートまたはこれに由来する材料を備える、非燃焼加熱型喫煙物品。 A non-combustion heating type smoking article comprising the tobacco sheet according to any one of claims 1 to 5 or a material derived from the same.
  7. 　少なくとも、たばこ粒子と、バインダーと、媒体とを混練して混合物を調製する工程１、
    　前記混合物を圧展またはダイから押出してウェットシートを調製する工程２、ならびに
    　前記ウェットシートを乾燥する工程３、
    を備える、請求項１～５のいずれかに記載の製造方法。     At least, the step 1 of kneading the tobacco particles, the binder and the medium to prepare a mixture.
    Step 2 to prepare a wet sheet by squeezing or extruding the mixture from a die, and step 3 to dry the wet sheet.
    The manufacturing method according to any one of claims 1 to 5.
  8. 　前記媒体が水を含む、請求項７に記載の製造方法。 The manufacturing method according to claim 7, wherein the medium contains water.
  9. 　前記工程２が、２つの基材フィルムの間にウェットシートが存在するラミネートシートを調製することを含む、請求項７または８に記載の製造方法。 The manufacturing method according to claim 7 or 8, wherein the step 2 comprises preparing a laminated sheet in which a wet sheet is present between two base films.
  10. 　前記工程１が、少なくともたばこ材料、バインダー、および媒体とを、一軸または多軸混練機にて混練することを含む、請求項７～９のいずれかに記載の製造方法。 The production method according to any one of claims 7 to 9, wherein the step 1 comprises kneading at least a tobacco material, a binder, and a medium with a uniaxial or multiaxial kneader.
  11. 　前記混合物が、混合物全量に対して２０～８０重量％の媒体を含む、請求項７～１０のいずれかに記載の製造方法。
          The production method according to any one of claims 7 to 10, wherein the mixture contains 20 to 80% by weight of a medium based on the total amount of the mixture.
PCT/JP2021/036389 2020-10-02 2021-10-01 Tobacco sheet WO2022071563A1 (en)

Priority Applications (11)

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EP21875859.7A EP4223150A1 (en) 2020-10-02 2021-10-01 Tobacco sheet
JP2022554133A JPWO2022071563A1 (en) 2020-10-02 2021-10-01
PCT/JP2022/025729 WO2023053633A1 (en) 2021-10-01 2022-06-28 Tobacco sheet for non-combustion heating-type flavor inhaler, non-combustion heating-type flavor inhaler, and non-combustion heating-type flavor inhalation system
JP2023550378A JPWO2023053633A1 (en) 2021-10-01 2022-06-28
JP2023550380A JPWO2023053635A1 (en) 2021-10-01 2022-06-28
PCT/JP2022/025758 WO2023053635A1 (en) 2021-10-01 2022-06-28 Tobacco sheet for non-combustion heating flavor inhaler, non-combustion heating flavor inhaler, and non-combustion heating flavor inhalation system
KR1020247014206A KR20240067127A (en) 2021-10-01 2022-06-28 Tobacco sheet for non-combustion heating type flavor inhaler and manufacturing method thereof, non-combustion heating type flavor inhaler and non-combustion heating type flavor inhalation system
JP2023550379A JPWO2023053634A1 (en) 2021-10-01 2022-06-28
PCT/JP2022/025741 WO2023053634A1 (en) 2021-10-01 2022-06-28 Tobacco sheet for non-combustion heating-type flavor inhaler and method for manufacturing same, non-combustion heating-type flavor inhaler, and non-combustion heating-type flavor inhaling system
KR1020247014205A KR20240067126A (en) 2021-10-01 2022-06-28 Tobacco sheet for non-combustion heating type flavor inhaler, non-combustion heating type flavor inhaler, and non-combustion heating type flavor inhalation system
KR1020247014009A KR20240067119A (en) 2021-10-01 2022-06-28 Tobacco sheet for non-combustion heating type flavor inhaler, non-combustion heating type flavor inhaler, and non-combustion heating type flavor inhalation system

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Citations (8)

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Publication number Priority date Publication date Assignee Title
JP5292410B2 (en) 2008-10-23 2013-09-18 日本たばこ産業株式会社 Non-combustion type flavor suction article
WO2020074535A1 (en) * 2018-10-08 2020-04-16 Philip Morris Products S.A. Clove-containing aerosol-generating substrate
WO2020089089A1 (en) * 2018-10-29 2020-05-07 Nerudia Limited Smoking substitute consumable
JP2020095953A (en) * 2018-12-05 2020-06-18 出光興産株式会社 Method for producing solid electrolyte having argyrodite type crystal structure
WO2020148902A1 (en) * 2019-01-18 2020-07-23 日本たばこ産業株式会社 Method for producing laminated reconstituted tobacco sheet
WO2020239597A1 (en) 2019-05-24 2020-12-03 Philip Morris Products S.A. Novel aerosol-generating substrate
WO2021078683A1 (en) 2019-10-21 2021-04-29 Philip Morris Products S.A. Novel aerosol-generating substrate comprising illicium species
WO2021078691A1 (en) 2019-10-21 2021-04-29 Philip Morris Products S.A. Novel aerosol-generating substrate comprising zingiber species

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5292410B2 (en) 2008-10-23 2013-09-18 日本たばこ産業株式会社 Non-combustion type flavor suction article
WO2020074535A1 (en) * 2018-10-08 2020-04-16 Philip Morris Products S.A. Clove-containing aerosol-generating substrate
WO2020074494A1 (en) 2018-10-08 2020-04-16 Philip Morris Products S.A. Novel clove-containing aerosol-generating substrate
WO2020089089A1 (en) * 2018-10-29 2020-05-07 Nerudia Limited Smoking substitute consumable
JP2020095953A (en) * 2018-12-05 2020-06-18 出光興産株式会社 Method for producing solid electrolyte having argyrodite type crystal structure
WO2020148902A1 (en) * 2019-01-18 2020-07-23 日本たばこ産業株式会社 Method for producing laminated reconstituted tobacco sheet
WO2020239597A1 (en) 2019-05-24 2020-12-03 Philip Morris Products S.A. Novel aerosol-generating substrate
WO2021078683A1 (en) 2019-10-21 2021-04-29 Philip Morris Products S.A. Novel aerosol-generating substrate comprising illicium species
WO2021078691A1 (en) 2019-10-21 2021-04-29 Philip Morris Products S.A. Novel aerosol-generating substrate comprising zingiber species

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