US20240268440A1 - Tobacco sheet for non-combustion heating flavor inhaler, non-combustion heating flavor inhaler, and non-combustion heating flavor inhalation system - Google Patents

Tobacco sheet for non-combustion heating flavor inhaler, non-combustion heating flavor inhaler, and non-combustion heating flavor inhalation system Download PDF

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Publication number
US20240268440A1
US20240268440A1 US18/621,151 US202418621151A US2024268440A1 US 20240268440 A1 US20240268440 A1 US 20240268440A1 US 202418621151 A US202418621151 A US 202418621151A US 2024268440 A1 US2024268440 A1 US 2024268440A1
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United States
Prior art keywords
tobacco
sheet
mass
cellulose
combustion heating
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US18/621,151
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English (en)
Inventor
Akihiro Koide
Kimitaka UCHII
Takahiro Matsuda
Ayaka HASHIMOTO
Kotaro SENDA
Kenta MITSUCHI
Keisuke Haruki
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Japan Tobacco Inc
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Japan Tobacco Inc
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Priority claimed from PCT/JP2021/036386 external-priority patent/WO2022071561A1/ja
Priority claimed from PCT/JP2021/036387 external-priority patent/WO2022071562A1/ja
Application filed by Japan Tobacco Inc filed Critical Japan Tobacco Inc
Assigned to JAPAN TOBACCO INC. reassignment JAPAN TOBACCO INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HASHIMOTO, AYAKA, HARUKI, Keisuke, MATSUDA, TAKAHIRO, MITSUCHI, KENTA, SENDA, Kotaro, UCHII, Kimitaka, KOIDE, AKIHIRO
Publication of US20240268440A1 publication Critical patent/US20240268440A1/en
Pending legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • 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
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/10—Chemical features of tobacco products or tobacco substitutes
    • A24B15/12—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/10—Chemical features of tobacco products or tobacco substitutes
    • A24B15/12—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco
    • A24B15/14—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco made of tobacco and a binding agent not derived from tobacco
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/10—Chemical features of tobacco products or tobacco substitutes
    • A24B15/16—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/01—Making cigarettes for simulated smoking devices
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00—Cigars; Cigarettes
    • A24D1/20—Cigarettes specially adapted for simulated smoking devices
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/20—Devices using solid inhalable precursors
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/46—Shape or structure of electric heating means

Definitions

  • the present invention relates to a tobacco sheet for a non-combustion heating-type flavor inhaler, a non-combustion heating-type flavor inhaler, and a non-combustion heating-type flavor inhaling system.
  • a tobacco filler including leaf tobacco or a tobacco sheet
  • a tobacco sheet for use in a combustion-type flavor inhaler.
  • a non-combustion heating-type flavor inhaler has been proposed in which a flavor source, such as a tobacco sheet, is not combusted but heated to obtain a flavor.
  • the heating temperature of a non-combustion heating-type flavor inhaler is lower than the combustion temperature of a combustion-type flavor inhaler and is approximately 400° C. or less, for example.
  • an aerosol generator can be added to a flavor source in the non-combustion heating-type flavor inhaler from the perspective of increasing the amount of smoke.
  • An aerosol generator is vaporized by heating and generates an aerosol.
  • a user is supplied with the aerosol together with a flavor component, such as a tobacco component, and can obtain a sufficient flavor.
  • Such a non-combustion heating-type flavor inhaler can include, for example, a tobacco-containing segment filled with a tobacco sheet or the like, a cooling segment, and a filter segment.
  • the tobacco-containing segment of the non-combustion heating-type flavor inhaler typically has a shorter axial length than the tobacco-containing segment of the combustion-type flavor inhaler.
  • the short tobacco-containing segment is filled with a large amount of tobacco sheet to ensure the amount of aerosol generated during heating.
  • the tobacco sheet in the non-combustion heating-type flavor inhaler typically has a low bulkiness or a high density.
  • Patent Literature 2 discloses a tobacco sheet for use in a non-combustion heating-type flavor inhaler.
  • the present inventors have found that, in terms of the heating system, the heating capability of a heater, and aerosol generation, the use of a tobacco sheet with a low bulkiness (high density) increases the total heat capacity of the tobacco-containing segment and, depending on the heating method and the capability of a heater, the tobacco sheet filled in the tobacco-containing segment does not contribute sufficiently to aerosol generation. To solve this problem, it is conceivable to reduce the total heat capacity of the tobacco-containing segment.
  • the present inventors have studied (1) reducing the specific heat of a tobacco raw material contained in a tobacco sheet and (2) using a tobacco sheet with a high bulkiness (low density).
  • the present invention includes the following aspects.
  • a tobacco sheet for a non-combustion heating-type flavor inhaler the tobacco sheet containing a fibrous material.
  • the sheet according to Aspect 1 or 2 which is a press-formed sheet.
  • a non-combustion heating-type flavor inhaler including a tobacco-containing segment containing the tobacco sheet for a non-combustion heating-type flavor inhaler according to any one of Aspects 1 to 5.
  • a non-combustion heating-type flavor inhaling system including:
  • the present invention can provide a tobacco sheet with a high bulkiness for a non-combustion heating-type flavor inhaler, a non-combustion heating-type flavor inhaler containing the tobacco sheet, and a non-combustion heating-type flavor inhaling system.
  • FIG. 1 is a cross-sectional view of an example of a non-combustion heating-type flavor inhaler according to the present embodiment.
  • FIG. 2 is a cross-sectional view of an example of a non-combustion heating-type flavor inhaling system according to the present embodiment, illustrating (a) a state before a non-combustion heating-type flavor inhaler is inserted into a heating device and (b) a state in which the non-combustion heating-type flavor inhaler is inserted into the heating device and is heated.
  • FIG. 3 is a view of an embodiment of a tobacco segment.
  • a tobacco sheet for a non-combustion heating-type flavor inhaler according to the present embodiment contains a fibrous material. Containing a fibrous material, the tobacco sheet according to the present embodiment is bulky and has a high bulkiness. Thus, the tobacco sheet according to the present embodiment can be used to reduce the total heat capacity of a tobacco-containing segment, and the tobacco sheet filled in the tobacco-containing segment can contribute sufficiently to aerosol generation. Furthermore, the tobacco sheet according to the present embodiment preferably further contains a tobacco raw material, an aerosol generator, and a shaping agent, and the blending ratio of these is set in a predetermined range to further improve the bulkiness of the tobacco sheet.
  • the fibrous material contained in the tobacco sheet according to the present embodiment may be any material with a fiber shape, such as a fiber.
  • the fibrous material is, for example, fibrous pulp, a fibrous tobacco material, fibrous synthetic cellulose, or the like. These may be used alone or in combination. Among these, fibrous pulp is preferred as the fibrous material from the perspective of fiber stiffness.
  • the fibrous material content per 100% by mass of the tobacco sheet preferably ranges from 5% to 50% by mass.
  • a fibrous material content of 5% by mass or more can result in a bulkiness capable of securing the function.
  • a fibrous material content of 50% by mass or less can result in sufficient tobacco aroma and aerosol generated during heating.
  • the fibrous material content more preferably ranges from 5% to 47% by mass, still more preferably 5% to 45% by mass, particularly preferably 5% to 40% by mass.
  • the tobacco sheet according to the present embodiment can further contain a tobacco raw material.
  • the tobacco raw material may be any tobacco raw material containing a tobacco component and is, for example, a tobacco powder or a tobacco extract.
  • the tobacco powder is, for example, leaf tobacco, midribs, residual stems, or the like. These may be used alone or in combination. These can be cut into a predetermined size and used as a tobacco powder.
  • the cumulative 90% particle diameter (D90) in a volume-based particle size distribution as measured by a dry laser diffraction method is preferably 200 ⁇ m or more, from the perspective of further improving the bulkiness.
  • the tobacco extract is, for example, a tobacco extract produced by coarsely grounding leaf tobacco, mixing and stirring the ground leaf tobacco with a solvent, such as water, to extract a water-soluble component from the leaf tobacco, and drying under vacuum and concentrating the resulting water extract.
  • the tobacco raw material content per 100% by mass of the tobacco sheet preferably ranges from 30% to 91% by mass.
  • a tobacco raw material content of 30% by mass or more can result in sufficient tobacco aroma generated during heating.
  • a tobacco raw material content of 91% by mass or less can result in a sufficient amount of aerosol generator or shaping agent contained.
  • the tobacco raw material content more preferably ranges from 50% to 90% by mass, still more preferably 55% to 85% by mass, particularly preferably 60% to 80% by mass.
  • the tobacco sheet according to the present embodiment preferably further contains a shaping agent from the perspective of ensuring the shape.
  • the shaping agent is, for example, a polysaccharide, a protein, a synthetic polymer, or the like. These may be used alone or in combination.
  • the polysaccharide is, for example, a cellulose derivative or a naturally occurring polysaccharide.
  • the cellulose derivative is, for example, a cellulose ether, such as methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxymethylethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose, benzyl cellulose, trityl cellulose, cyanoethyl cellulose, carboxymethyl cellulose, carboxyethyl cellulose, or aminoethyl cellulose; an organic acid ester, such as cellulose acetate, cellulose formate, cellulose propionate, cellulose butyrate, cellulose benzoate, cellulose phthalate, or tosyl cellulose; a mineral acid ester, such as cellulose nitrate, cellulose sulfate, cellulose phosphate, or cellulose xanthate; or the like.
  • a cellulose ether such as methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxymethylethyl cellulose, hydroxy
  • the naturally occurring polysaccharide is, for example, a plant-derived polysaccharide, such as guar gum, tara gum, locust bean gum, tamarind seed gum, pectin, gum arabic, gum tragacanth, karaya gum, ghatti gum, arabinogalactan, flaxseed gum, cassia gum, psyllium seed gum, or Artemisia seed gum; an algae-derived polysaccharide, such as carrageenan, agar, alginic acid, a propylene glycol alginate ester, furcellaran, or a Colpomenia sinuosa extract; a microbial polysaccharide, such as xanthan gum, gellan gum, curdlan, pullulan, Agrobacterium succinoglycan, welan gum, Macrophomopsis gum, or rhamsan gum; a crustacean polysaccharide, such as chitin, chitosan, or glu
  • the protein is, for example, a grain protein, such as wheat gluten or rye gluten.
  • the synthetic polymer is, for example, polyphosphoric acid, sodium polyacrylate, polyvinylpyrrolidone, or the like.
  • the shaping agent content per 100% by mass of the tobacco sheet preferably ranges from 0.1% to 15% by mass.
  • the shaping agent content is 0.1% by mass or more, a raw material mixture can be easily formed into a sheet.
  • the shaping agent content is 15% by mass or less, another raw material for ensuring a function required for the tobacco-containing segment of the non-combustion heating-type flavor inhaler can be sufficiently used.
  • the shaping agent content more preferably ranges from 0.2% to 13% by mass, still more preferably 0.5% to 12% by mass, particularly preferably 1% to 10% by mass.
  • the tobacco sheet according to the present embodiment preferably further contains an aerosol generator from the perspective of increasing the amount of smoke during heating.
  • the aerosol generator is, for example, glycerin, propylene glycol, 1,3-butanediol, or the like. These may be used alone or in combination.
  • the aerosol generator content per 100% by mass of the tobacco sheet preferably ranges from 5% to 50% by mass.
  • An aerosol generator content of 5% by mass or more can result in sufficient aerosol in terms of amount generated during heating.
  • An aerosol generator content of 50% by mass or less can result in sufficient aerosol in terms of heat capacity generated during heating.
  • the aerosol generator content more preferably ranges from 6% to 45% by mass, still more preferably 8% to 40% by mass, particularly preferably 10% to 30% by mass.
  • the tobacco sheet according to the present embodiment may further contain a reinforcing agent from the perspective of further improving physical properties.
  • the reinforcing agent is, for example, a liquid material with a surface coating function of forming a film when dried, such as an aqueous suspension of pulp or pectin, or the like. These may be used alone or in combination.
  • the reinforcing agent content per 100% by mass of the tobacco sheet preferably ranges from 0.1% to 20% by mass.
  • the reinforcing agent content more preferably ranges from 0.2% to 18% by mass, still more preferably 0.5% to 15% by mass.
  • the tobacco sheet according to the present embodiment can further contain a humectant from the perspective of quality preservation.
  • the humectant is, for example, a sugar alcohol, such as sorbitol, erythritol, xylitol, maltitol, lactitol, mannitol, or reduced maltose syrup, or the like. These may be used alone or in combination.
  • the humectant content per 100% by mass of the tobacco sheet preferably ranges from 1% to 15% by mass. In this range, another raw material for ensuring a function required for the tobacco-containing segment of the non-combustion heating-type flavor inhaler can be sufficiently used.
  • the humectant content more preferably ranges from 2% to 12% by mass, still more preferably 3% to 10% by mass.
  • the tobacco sheet according to the present embodiment can contain, in addition to the fibrous material, the tobacco raw material, the shaping agent, the aerosol generator, the reinforcing agent, and the humectant, if necessary, a flavoring and seasoning agent, such as a flavoring agent or a taste agent, a colorant, a wetting agent, a preservative, a diluent, such as an inorganic substance, and/or the like.
  • a flavoring and seasoning agent such as a flavoring agent or a taste agent, a colorant, a wetting agent, a preservative, a diluent, such as an inorganic substance, and/or the like.
  • the tobacco sheet according to the present embodiment preferably has a bulkiness of 190 cc/100 g or more.
  • the bulkiness is 190 cc/100 g or more, the total heat capacity of the tobacco-containing segment of the non-combustion heating-type flavor inhaler can be sufficiently reduced, and a tobacco sheet filled in the tobacco-containing segment can contribute more to aerosol generation.
  • the bulkiness is more preferably 210 cc/100 g or more, still more preferably 230 cc/100 g or more.
  • the upper limit of the bulkiness is, for example, but not limited to, 800 cc/100 g or less.
  • the bulkiness is a value measured with DD-60A (trade name, manufactured by Borgwaldt KC Inc.) after cutting the tobacco sheet into a size of 0.8 mm ⁇ 9.5 mm and leaving it in a conditioned room at 22° C. and 60% for 48 hours.
  • the measurement is performed by putting 15 g of the shredded tobacco sheet into a cylindrical vessel with an inside diameter of 60 mm and determining the volume of the tobacco sheets compressed at a load of 3 kg for 30 seconds.
  • the “tobacco sheet” is a component constituting a tobacco sheet formed into a sheet shape.
  • sheet refers to a shape with a pair of approximately parallel main surfaces and side surfaces.
  • the length and width of the tobacco sheet are not particularly limited and can be appropriately adjusted according to the filling form.
  • the thickness of the tobacco sheet is preferably, but not limited to, in the range of 100 to 1000 ⁇ m, more preferably 150 to 600 ⁇ m, in terms of the balance between heat transfer efficiency and strength.
  • the tobacco sheet according to the present embodiment can be produced, for example, by a known method, such as a rolling method or a casting method. Details of various tobacco sheets produced by such a method are disclosed in “Tabako no jiten (Tobacco Dictionary), Tobacco Academic Studies Center, Mar. 31, 2009”.
  • a method for producing a tobacco sheet by a rolling method may include the following steps, for example.
  • each rolling roller may be heated or cooled, or the number of revolutions of each rolling roller may be adjusted.
  • a tobacco sheet with a desired basis weight can be formed by adjusting the distance between rolling rollers.
  • a method for producing a tobacco sheet by a casting method may include the following steps, for example.
  • This method for producing a tobacco sheet may further include a step of irradiating a slurry, which is prepared by mixing water, a tobacco powder, an aerosol generator, a shaping agent, and fibrous pulp, with ultraviolet radiation or X-ray radiation to remove a component, such as a nitrosamine.
  • a slurry which is prepared by mixing water, a tobacco powder, an aerosol generator, a shaping agent, and fibrous pulp, with ultraviolet radiation or X-ray radiation to remove a component, such as a nitrosamine.
  • a non-combustion heating-type flavor inhaler includes a tobacco-containing segment containing the tobacco sheet according to the present embodiment. Since the non-combustion heating-type flavor inhaler according to the present embodiment includes the tobacco-containing segment filled with the tobacco sheet with a high bulkiness according to the present embodiment, the total heat capacity of the tobacco-containing segment can be sufficiently reduced, and the tobacco sheet filled in the tobacco-containing segment can contribute more to aerosol generation.
  • FIG. 1 illustrates an example of the non-combustion heating-type flavor inhaler according to the present embodiment.
  • a non-combustion heating-type flavor inhaler 1 illustrated in FIG. 1 includes a tobacco-containing segment 2 filled with the tobacco sheet according to the present embodiment, a tubular cooling segment 3 with a hole 8 on the periphery, a center hole segment 4 , and a filter segment 5 .
  • the non-combustion heating-type flavor inhaler according to the present embodiment may have another segment, in addition to the tobacco-containing segment, the cooling segment, the center hole segment, and the filter segment.
  • the non-combustion heating-type flavor inhaler may have any axial length and preferably has an axial length of 40 mm or more and 90 mm or less, more preferably 50 mm or more and 75 mm or less, still more preferably 50 mm or more and 60 mm or less.
  • the non-combustion heating-type flavor inhaler preferably has a circumferential length of 16 mm or more and 25 mm or less, more preferably 20 mm or more and 24 mm or less, still more preferably 21 mm or more and 23 mm or less.
  • the tobacco-containing segment has a length of 20 mm
  • the cooling segment has a length of 20 mm
  • the center hole segment has a length of 8 mm
  • the filter segment has a length of 7 mm.
  • the length of the filter segment can be selected in the range of 4 mm or more and 10 mm or less.
  • the airflow resistance of the filter segment is selected in the range of 15 mmH 2 O/seg or more and 60 mmH 2 O/seg or less per segment.
  • the length of each segment can be appropriately changed according to the manufacturability, quality requirements, and the like. Only the filter segment on the downstream side of the cooling segment without the center hole segment can also function as a non-combustion heating-type flavor inhaler.
  • the tobacco-containing segment 2 is filled with the tobacco sheet according to the present embodiment in a wrapping paper (hereinafter also referred to as a “wrapper”).
  • the wrapping paper may be filled with the tobacco sheet by any method, for example, by wrapping the tobacco sheet with the wrapper or by filling a tubular wrapper with the tobacco sheet.
  • the shape of the tobacco sheet has a longitudinal direction like a rectangular shape, the tobacco sheet may be packed such that the longitudinal direction is an unspecified direction in the wrapper or may be packed so as to be aligned in the axial direction of the tobacco-containing segment 2 or in a direction perpendicular to the axial direction.
  • the cooling segment 3 may be constituted by a tubular member 7 .
  • the tubular member 7 may be, for example, a paper tube prepared by processing a thick paper into a cylindrical shape.
  • the tubular member 7 and a mouthpiece lining paper 12 described later have a hole 8 passing therethrough.
  • the hole 8 allows the outside air to be introduced into the cooling segment 3 during inhalation. This brings a vaporized aerosol component generated by heating the tobacco-containing segment 2 into contact with the outside air, lowers the temperature of the vaporized aerosol component, liquefies the vaporized aerosol component, and forms an aerosol.
  • the hole 8 may have any diameter (full length), for example, a diameter in the range of 0.5 mm or more and 1.5 mm or less.
  • the number of holes 8 may be, but is not limited to, one or two or more. For example, a plurality of holes 8 may be provided on the periphery of the cooling segment 3 .
  • the amount of outside air introduced through the hole 8 is preferably 85% by volume or less, more preferably 80% by volume or less, of the volume of the whole gas inhaled by the user.
  • the amount of outside air is 85% by volume or less, it is possible to sufficiently reduce the decrease in flavor due to dilution with the outside air.
  • This is also referred to as a ventilation ratio.
  • the lower limit of the ventilation ratio is preferably 55% by volume or more, more preferably 60% by volume or more, in terms of cooling performance.
  • the cooling segment may be a segment including a sheet of an appropriate constituent material that is wrinkled, pleated, gathered, or folded. A cross-sectional profile of such an element may have randomly oriented channels.
  • the cooling segment may also include a bundle of longitudinally extending tubes. Such a cooling segment may be formed, for example, by wrapping a pleated, gathered, or folded sheet material with a wrapping paper.
  • the cooling segment can have an axial length of, for example, 7 mm or more and 28 mm or less, for example, 18 mm. Furthermore, the cooling segment can be substantially circular in its axial cross-sectional shape and can have a diameter of, for example, 5 mm or more and 10 mm or less, for example, approximately 7 mm.
  • the center hole segment is composed of a fill layer with one or more hollow portions and an inner plug wrapper (inner wrapping paper) covering the fill layer.
  • the center hole segment 4 is composed of a second fill layer 9 with a hollow portion and a second inner plug wrapper 10 covering the second fill layer 9 .
  • the center hole segment 4 has a function of increasing the strength of the mouthpiece segment 6 .
  • the second fill layer 9 may be, for example, a rod with an inside diameter of ⁇ 1.0 mm or more and ⁇ 5.0 mm or less in which cellulose acetate fibers are densely packed and a plasticizer containing triacetin is added in an amount of 6% by mass or more and 20% by mass or less of the mass of cellulose acetate and is hardened.
  • the fibers in the second fill layer 9 have a high packing density, and air or an aerosol flows only through the hollow portion during inhalation and rarely flows through the second fill layer 9 .
  • the second fill layer 9 inside the center hole segment 4 is a fiber fill layer, and the touch from the outside during use rarely causes discomfort to the user.
  • the center hole segment 4 may have no second inner plug wrapper 10 and may maintain its shape by thermoforming.
  • the filter segment 5 may have any structure and may be composed of one or more fill layers.
  • the outer side of the fill layer(s) may be wrapped with one or more wrapping papers.
  • the airflow resistance per segment of the filter segment 5 can be appropriately changed depending on the amount, material, and the like of filler in the filter segment 5 .
  • the filler is cellulose acetate fibers
  • increasing the amount of cellulose acetate fibers in the filter segment 5 can increase the airflow resistance.
  • the packing density of the cellulose acetate fibers may range from 0.13 to 0.18 g/cm 3 .
  • the airflow resistance is a value measured with an airflow resistance measuring instrument (trade name: SODIMAX, manufactured by SODIM).
  • the filter segment 5 may have any circumferential length, which preferably ranges from 16 to 25 mm, more preferably 20 to 24 mm, still more preferably 21 to 23 mm.
  • the axial length of the filter segment 5 can be selected from 4 to 10 mm and is selected to have an airflow resistance in the range of 15 to 60 mmH 2 O/seg.
  • the filter segment 5 preferably has an axial length in the range of 5 to 9 mm, more preferably 6 to 8 mm.
  • the filter segment 5 may have any cross-sectional shape, for example, a circular shape, an elliptical shape, a polygonal shape, or the like.
  • a breakable capsule containing a flavoring agent, flavoring agent beads, or a flavoring agent may be added directly to the filter segment 5 .
  • the center hole segment 4 and the filter segment 5 can be connected using an outer plug wrapper (outer wrapping paper) 11 .
  • the outer plug wrapper 11 may be, for example, cylindrical paper.
  • the tobacco-containing segment 2 , the cooling segment 3 , and the connected center hole segment 4 and filter segment 5 can be connected using the mouthpiece lining paper 12 .
  • These connections can be made, for example, by applying an adhesive agent, such as a vinyl acetate adhesive agent, to the inner surface of the mouthpiece lining paper 12 , inserting the three segments therein, and wrapping the three segments.
  • These segments may be connected multiple times with a plurality of lining papers.
  • a non-combustion heating-type flavor inhaling system includes the non-combustion heating-type flavor inhaler according to the present embodiment and a heating device for heating the tobacco-containing segment of the non-combustion heating-type flavor inhaler.
  • the non-combustion heating-type flavor inhaling system according to the present embodiment may have another constituent, in addition to the non-combustion heating-type flavor inhaler according to the present embodiment and the heating device.
  • FIG. 2 illustrates an example of the non-combustion heating-type flavor inhaling system according to the present embodiment.
  • the non-combustion heating-type flavor inhaling system illustrated in FIG. 2 includes the non-combustion heating-type flavor inhaler 1 according to the present embodiment and a heating device 13 for heating the tobacco-containing segment of the non-combustion heating-type flavor inhaler 1 from the outside.
  • FIG. 2 ( a ) illustrates a state before the non-combustion heating-type flavor inhaler 1 is inserted into the heating device 13
  • FIG. 2 ( b ) illustrates a state in which the non-combustion heating-type flavor inhaler 1 is inserted into the heating device 13 and is heated.
  • the heating device 13 illustrated in FIG. 2 includes a body 14 , a heater 15 , a metal tube 16 , a battery unit 17 , and a control unit 18 .
  • the body 14 has a tubular recess 19 .
  • the heater 15 and the metal tube 16 are arranged on the inner side surface of the recess 19 at a position corresponding to the tobacco-containing segment of the non-combustion heating-type flavor inhaler 1 inserted into the recess 19 .
  • the heater 15 may be an electrical resistance heater and is heated by an electric power supplied from the battery unit 17 according to an instruction from the control unit 18 for temperature control. Heat generated by the heater 15 is transferred to the tobacco-containing segment of the non-combustion heating-type flavor inhaler 1 through the metal tube 16 with high thermal conductivity.
  • the heating device 13 heats the tobacco-containing segment of the non-combustion heating-type flavor inhaler 1 from the outside but may heat it from the inside.
  • the heating temperature of the heating device is preferably, but is not limited to, 400° C. or less, more preferably 150° C. or more and 400° C. or less, still more preferably 200° C. or more and 350° C. or less.
  • the heating temperature refers to the temperature of the heater of the heating device.
  • a sheet produced by a paper-making method is composed of a fibrous tobacco leaf residue and therefore has high strength, but has insufficient surface smoothness.
  • a sheet produced by a casting method a wet sheet in a water-rich state is dried, and steam generation during drying or the like produces bubbles on the surface.
  • the smoothness is not at a sufficient level partly because an end portion of the wet sheet has a low density during water evaporation and shrinkage of the wet sheet.
  • a fibrous material is blended, the material is entangled and forms a lump, which also impairs the sheet surface smoothness.
  • a tobacco sheet is typically subjected to processing, such as shaping and cutting, to provide a smoking article.
  • a tobacco sheet with insufficient surface smoothness may cause a failure, such as a fracture, of the sheet when the sheet comes into contact with a processing apparatus.
  • a tobacco sheet with high processability in addition to a high bulkiness is described below as a first embodiment.
  • a fine powder so-called fallen shreds
  • the fallen shreds can be reduced to improve handleability.
  • a tobacco sheet with fewer fallen shreds in addition to a high bulkiness is described below as a second embodiment.
  • the tobacco sheet according to the present embodiment includes at least a tobacco material and a binder.
  • the binder is a type of the shaping agent described above and is an adhesive agent for binding tobacco materials to each other or binding a tobacco material to another component.
  • a known binder can be used.
  • a binder is, for example, a polysaccharide, such as guar gum or xanthan gum, or a cellulose derivative, such as carboxymethyl cellulose (CMC), a carboxymethyl cellulose sodium salt (CMC-Na), or hydroxypropyl cellulose (HPC).
  • the binder content based on dry mass preferably has an upper limit of 6% by mass or less and preferably has a lower limit of 1% by mass or more, more preferably 3% by mass or more, based on the dry mass of the tobacco sheet. At an amount of binder higher than the upper limit or lower than the lower limit, the effects described above may not be sufficiently exhibited.
  • a binder used in the present embodiment may be a polysaccharide, a protein, or a synthetic polymer. Specific examples of these are described below. In the present embodiment, these binders may be used in combination.
  • Organic acid ester cellulose acetate, cellulose formate, cellulose propionate, cellulose butyrate, cellulose benzoate, cellulose phthalate, or tosyl cellulose
  • Guar gum tara gum, locust bean gum, tamarind seed gum, pectin, gum arabic, gum tragacanth, karaya gum, ghatti gum, arabinogalactan, flaxseed gum, cassia gum, psyllium seed gum, or Artemisia seed gum
  • Carrageenan agar, alginic acid, propylene glycol alginate ester, furcellaran, or a Colpomenia sinuosa extract
  • Xanthan gum gellan gum, curdlan, pullulan, Agrobacterium succinoglycan, welan gum, Macrophomopsis gum, or rhamsan gum
  • Starch sodium starch glycolate, pregelatinized starch, or dextrin
  • Polyphosphoric acid sodium polyacrylate, or polyvinylpyrrolidone
  • the tobacco material used in the present embodiment may be the fibrous tobacco material or the tobacco raw material.
  • shredded dried tobacco leaves, ground leaf tobacco, or the like can be used as a tobacco material other than the fibrous tobacco material.
  • the ground leaf tobacco is particles produced by grinding leaf tobacco.
  • the particle diameter D90 of the ground leaf tobacco is preferably 200 ⁇ m or more as described above and can preferably has an upper limit of 1000 ⁇ m or less, more preferably 50 to 500 ⁇ m.
  • the average particle size D50 thereof can preferably range from 20 to 1000 ⁇ m, more preferably 50 to 500 ⁇ m.
  • the grinding can be performed with a known grinder and may be dry grinding or wet grinding.
  • the ground leaf tobacco is also referred to as leaf tobacco particles.
  • the particle size is determined by a laser diffraction-scattering method and is, more specifically, measured with a laser diffraction particle size distribution measuring apparatus (for example, LA-950 manufactured by Horiba, Ltd.).
  • the type of tobacco may be, but is not limited to, flue-cured varieties, burley varieties, oriental varieties, native varieties, other varieties belonging to Nicotiana tabacum varieties or Nicotiana rustica varieties, or the like.
  • the amount of the tobacco material in the tobacco sheet is preferably, but not limited to, in the range of 50% to 95% by mass, more preferably 60% to 90% by mass, based on dry mass.
  • a known aerosol generator can be used, and examples thereof include polyhydric alcohols, such as glycerin and propylene glycol (PG), and those with a boiling point of more than 100° C., such as triethyl citrate (TEC) and triacetin.
  • the amount of the aerosol generator in the tobacco sheet preferably ranges from 5% to 40% by mass, more preferably 10% to 20% by mass, based on dry mass (mass excluding water mixed therein, the same applies hereinafter).
  • the amount of the aerosol generator is higher than the upper limit, it may be difficult to produce a tobacco sheet.
  • the amount of the aerosol generator is lower than the lower limit, smoke sensitivity may decrease.
  • the tobacco sheet may contain an emulsifier.
  • the emulsifier increases the affinity between the aerosol generator, which is lipophilic, and the tobacco material, which is hydrophilic.
  • the emulsifier can be a known emulsifier and is, for example, an emulsifier with an HLB value in the range of 8 to 18.
  • the amount of the emulsifier is preferably, but not limited to, in the range of 0.1 to 3 parts by mass, more preferably 1 to 2 parts by mass, based on dry mass with respect to 100 parts by mass of the tobacco sheet.
  • the tobacco sheet may contain a flavoring agent.
  • the flavoring agent is a substance that provides an aroma or flavor.
  • the flavoring agent may be a natural flavoring agent or a synthetic flavoring agent.
  • the flavoring agent may be one type of flavoring agent or a mixture of multiple types of flavoring agents.
  • the flavoring agent may be any flavoring agent commonly used in smoking articles, and specific examples thereof are described below.
  • the flavoring agent can be contained in a sheet for a smoking article in such an amount that the smoking article can provide a favorable aroma or flavor.
  • the amount of the flavoring agent in the tobacco sheet preferably ranges from 1% to 30% by mass, more preferably 2% to 20% by mass.
  • the flavoring agent may be of any type and, from the perspective of imparting flavor sense, may be acetoanisole, acetophenone, acetylpyrazine, 2-acetylthiazole, an alfalfa extract, amyl alcohol, amyl butyrate, trans-anethole, star anise oil, apple juice, Peru balsam oil, beeswax absolute, benzaldehyde, benzoin resinoid, benzyl alcohol, benzyl benzoate, benzyl phenylacetate, benzyl propionate, 2,3-butanedione, 2-butanol, butyl butyrate, butyric acid, caramel, cardamom oil, carob absolute, ⁇ -carotene, carrot juice, L-carvone, ⁇ -caryophyllene, cassia bark oil, cedar wood oil, celery seed oil, chamomile oil, cinnamaldehyde, cinn
  • At least one surface preferably has an Sa in the range of 5 to 30 ⁇ m.
  • Sa is a measure of the surface roughness.
  • the tobacco sheet according to the present embodiment with an Sa in the above range has high processability and fewer shreds falling from the surface thereof. From this perspective, Sa more preferably ranges from 10 to 25 ⁇ m, still more preferably 10 to 20 ⁇ m.
  • the tobacco sheet according to the present embodiment preferably has an Sa in the above range on both surfaces thereof.
  • the thickness of the tobacco sheet is preferably, but not limited to, in the range of 20 to 2000 ⁇ m, more preferably 100 to 1500 ⁇ m, still more preferably 100 to 1000 ⁇ m, in one embodiment.
  • the tobacco sheet according to the present embodiment preferably has a tensile elongation of 2.0% or more, more preferably 3.0% or more, still more preferably 5.0% or more.
  • the upper limit of the tensile elongation is typically, but not limited to, approximately 15% or less.
  • the tobacco sheet preferably has a tensile stress of 2.0 N/mm or more, more preferably 2.5 N/mm or more, still more preferably 3.0 N/mm or more.
  • the smoothness of the tobacco sheet according to the present embodiment has an influence on the handleability of the product.
  • a fine powder so-called fallen shreds
  • a tobacco sheet according to the present invention has high smoothness and is less likely to have such a failure.
  • a tobacco segment for use in a smoking article can be produced from a tobacco sheet.
  • the tobacco segment includes a tubular wrapper and a tobacco sheet helically packed in the wrapper (see FIG. 3 (A) ).
  • 20 A denotes a tobacco segment
  • T denotes a tobacco sheet
  • 22 denotes a wrapper, which is typically paper.
  • the tobacco segment is preferably rod-like and may have a length in the range of approximately 15 to 80 mm and a diameter in the range of approximately 5 to 10 mm.
  • the tobacco segment 20 A illustrated in FIG. 3 A may be cut to have an aspect ratio (length/diameter) in the range of approximately 0.5 to 1.2 (see FIG. 3 (B) ).
  • the tobacco segment 20 A has a tubular wrapper 22 and a tobacco sheet T folded and packed in the wrapper.
  • a ridgeline formed by folding is approximately parallel to the longitudinal direction of the segment (see FIG. 3 (C) ).
  • the tobacco segment 20 A is preferably rod-like and may have a length in the range of approximately 15 to 80 mm and a diameter in the range of approximately 5 to 10 mm.
  • the tobacco sheet T is preferably subjected to surface wrinkling, such as pleating or crimping, in advance.
  • the tobacco segment 20 A has the tubular wrapper 22 and cut pieces Tc of the tobacco sheet packed in the wrapper (see FIG. 3 (D) ).
  • the tobacco segment 20 A is preferably rod-like and may have a length in the range of approximately 15 to 80 mm and a diameter in the range of approximately 5 to 10 mm.
  • Each cut piece may have any size and, for example, may have a longest side length in the range of approximately 2 to 20 mm and a width in the range of approximately 0.5 to 1.5 mm.
  • the tobacco segment 20 A has the tubular wrapper 22 and shredded strands packed in the wrapper (see FIG. 3 (E) ).
  • the shredded strands are packed such that the longitudinal direction thereof is approximately parallel to the longitudinal direction of the wrapper 22 .
  • Each shredded strand may have a width in the range of approximately 0.5 to 1.5 mm.
  • the tobacco segment 20 A has the tubular wrapper 22 and a shredded tobacco filler randomly packed in the wrapper. Shredded tobacco is cut shreds and is different from shredded strands.
  • the tobacco sheet according to the present embodiment can be produced by any method, preferably a method including the following steps.
  • Step 2 of pressure-extending the mixture or extruding the mixture through a die to prepare a wet sheet.
  • a sheet formed by applying pressure in this manner is referred to as a “press-formed sheet”, and the “press-formed sheet” includes a “laminated sheet” and an “extruded sheet”, as described later.
  • the laminated sheet is a sheet produced by pressure-extending the mixture one or more times to a target thickness using a roller and then drying the mixture to a target water content.
  • the extruded sheet is a sheet produced by extruding the mixture through a T-die or the like to a target thickness and then drying the mixture to a target water content.
  • pressure extension and extrusion may be combined.
  • the mixture may be extruded and then further pressure-extended to form a sheet.
  • the fibrous material, the tobacco material, the binder, and the medium are kneaded.
  • an aerosol-generating material, an emulsifier, or a flavoring agent may also be added.
  • the amount of each component is adjusted to achieve the amount described above.
  • the medium is preferably, for example, composed mainly of water or a water-soluble organic solvent with a boiling point of less than 100° ° C., such as ethanol, and is more preferably water or ethanol.
  • This step can be performed by kneading the components and is preferably performed through 1) grinding of a raw material (for example, a single leaf), 2) preparation of a wet powder, and 3) kneading.
  • a raw material is coarsely ground and is then finely ground using a grinder (for example, ACM-5 manufactured by Hosokawa Micron Corporation).
  • the particle diameter D90 after the fine grinding preferably ranges from 20 to 1000 ⁇ m.
  • the particle size is measured with a laser diffraction particle size analyzer, such as Mastersizer (manufactured by malvern).
  • a binder and an optional additive agent, such as a flavoring agent or a lipid, are added to and mixed with the ground tobacco raw material (for example, leaf tobacco particles).
  • This mixing is preferably dry blending, and a mixer is preferably used as a mixing machine.
  • a medium, such as water, and an optional aerosol-generating material, such as glycerin are then added to the dry blend and are mixed using a mixer to prepare a wet powder (a powder in a wet state).
  • the amount of the medium in the wet powder can range from 20% to 80% by mass, preferably 20% to 40% by mass, and the wet powder is appropriately adjusted in the step 2.
  • the amount of the medium can range from 20% to 50% by mass in the case of pressure extension and 20% to 80% by mass in the case of extrusion in the step 2.
  • the wet powder preferably has a solid concentration in the range of 50% to 90% by mass.
  • the wet powder is kneaded with a kneader (for example, DG-1 manufactured by Dalton Corporation).
  • a kneader for example, DG-1 manufactured by Dalton Corporation.
  • the kneading is preferably performed until the medium is wholly dispersed.
  • the kneading is preferably performed until the color of the mixture is visually uniform.
  • the mixture (wet powder) is pressure-extended or extruded through a die to prepare a wet sheet.
  • the mixture sandwiched between two substrate films can be passed between a pair of rollers to a predetermined thickness (more than 100 ⁇ m) using a calender (for example, manufactured by Yuri Roll Machine Co., Ltd.) and can be pressure-extended to form a laminate of a wet sheet sandwiched between the two substrate films.
  • the substrate film is preferably a non-adhesive film, such as a fluorinated polymer film.
  • the pressure extension using a roller can be performed multiple times.
  • the mixture may be extruded through a die (preferably a T-die) with a predetermined gap to form a wet sheet on a substrate.
  • the substrate may be a known substrate, such as a glass sheet, a metal sheet, or a plastic sheet.
  • a known extruder can be used for the extrusion.
  • the wet sheet is dried.
  • the laminate can be subjected to this step by the following procedure. 1) One of the substrate films is peeled off. 2) The laminate is dried with a forced-air dryer. The drying temperature may be room temperature and preferably ranges from 50° C. to 100° C., and the drying time can range from 1 to 2 minutes. 3) The remaining substrate film is then peeled off, and drying is further performed under the conditions described above to produce a tobacco sheet. Such drying can prevent the tobacco sheet from adhering to another substrate.
  • the tobacco sheet thus produced is also referred to as a “laminated sheet”.
  • the laminated sheet is preferred because it has a smooth surface and can have fewer fallen shreds when coming into contact with another member. This method is suitable for the production of a sheet of 300 ⁇ m or less.
  • the wet sheet on the substrate is dried by air drying or heating.
  • the drying conditions are as described above.
  • the tobacco sheet thus produced is also referred to as an “extruded sheet”.
  • the extruded sheet is preferred because it has a smooth surface and can have fewer fallen shreds when coming into contact with another member. This method is suitable for the production of a sheet of 200 ⁇ m or more.
  • a tobacco sheet according to the present embodiment contains a tobacco material and a cellulose derivative with a degree of substitution of 0.65 or more as a binder.
  • the cellulose derivative with a degree of substitution of 0.65 or more is used as a binder.
  • the cellulose derivative is a cellulose in which an —OH group of the glucopyranose residue is modified.
  • a cellulose with an —OH group modified to an —OR group (R denotes an organic group) is also referred to as a cellulose ether, and a cellulose with an —OH group modified to an —OX group (X denotes a group derived from an acid) is also referred to as a cellulose ester, and both of them can be used in the present invention.
  • the degree of substitution is the number of substituents per glucopyranose residue, that is, the number of modified OH groups.
  • the degree of substitution used in the present invention is preferably 0.65 or more, more preferably 0.7 or more, still more preferably 0.8 or more.
  • the upper limit of the degree of substitution is preferably 3.0 or less, more preferably 2.0 or less, still more preferably 1.6 or less, particularly preferably 1.0 or less.
  • the degree of substitution is determined by a known method.
  • the degree of substitution is determined by a nitric acid-methanol method.
  • 1) approximately 2.0 g of a sample is precisely weighed and is put into a 300-ml stoppered conical flask.
  • 100 ml of nitric acid-methanol (a liquid prepared by adding 100 ml of special grade concentrated nitric acid to 1 g of anhydrous methanol) is added and shaken for approximately 2 hours to convert a terminal acid group from a salt-type to a hydrogen-type (for example, from COONa to COOH).
  • the cellulose ether has up to three R groups, and each R may be the same or different.
  • R may be a C1 to C3 linear or branched alkyl group, such as a methyl group, an ethyl group, or a propyl group; a C1 to C3 linear or branched hydroxyalkyl group, such as a hydroxymethyl group, a hydroxyethyl group, or a hydroxypropyl group; a C7 to C20 arylalkyl group, such as a benzyl group or a trityl group; a cyanoalkyl group, such as a cyanoethyl group; a carboxyalkyl group, such as a carboxymethyl group or a carboxyethyl group; or an aminoalkyl group, such as an aminoethyl group.
  • R is preferably a carboxyalkyl group, more preferably a carboxymethyl group.
  • the cellulose ester has up to three X groups, and each X may be the same or different.
  • X may be a group derived from a C0 to C4 carboxylic acid, such as formic acid, acetic acid, propionic acid, or butyric acid; a group derived from a C6 to C10 aromatic carboxylic acid, such as benzoic acid or phthalic acid; a group derived from sulfonic acid, such as p-toluenesulfonic acid; a group derived from mineral acid, such as nitric acid, sulfuric acid, or phosphoric acid; or a group derived from xanthic acid.
  • the degree of substitution in the cellulose ester is also referred to as the degree of esterification.
  • the cellulose derivative used as a binder improves the affinity for a tobacco material. This improves the strength of the tobacco sheet and reduces fallen shreds during use.
  • the cellulose derivative is soluble in an organic solvent, in particular in ethanol.
  • an organic solvent in particular in ethanol.
  • the use of a mixture containing ethanol as a medium in the production of a tobacco sheet can reduce the viscosity of the mixture and is therefore more advantageous than a mixture containing water as a medium in a transport, coating, or other step in the production.
  • ethanol is more volatile than water, the production time and the energy cost for drying can be reduced in the production method.
  • the amount of the cellulose derivative in the tobacco sheet based on dry mass is preferably, but not limited to, in the range of 0.1% to 10% by mass, more preferably 1% to 5% by mass, still more preferably 2% to 4% by mass, based on the dry mass of the tobacco sheet. At an amount of binder higher than the upper limit or lower than the lower limit, the effects described above may not be sufficiently exhibited.
  • Cellulose ethers methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxymethylethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose, benzyl cellulose, trityl cellulose, cyanoethyl cellulose, carboxymethyl cellulose, carboxyethyl cellulose, and aminoethyl cellulose
  • Cellulose esters organic acid esters, such as cellulose acetate, cellulose formate, cellulose propionate, cellulose butyrate, cellulose benzoate, cellulose phthalate, and tosyl cellulose; and mineral acid esters, such as cellulose nitrate, cellulose sulfate, cellulose phosphate, and a cellulose xanthate salt
  • the tobacco material described in the first embodiment can be used in addition to the fibrous tobacco material.
  • the tobacco sheet may contain the aerosol generator described in the first embodiment.
  • the tobacco sheet may contain the emulsifier described in the first embodiment.
  • the tobacco sheet may contain a cellulose other than tobacco.
  • the cellulose other than tobacco is, for example, the cellulose fiber or cellulose powder described above and does not include a cellulose derivative as a binder.
  • the tobacco sheet may contain the flavoring agent described in the first embodiment.
  • the thickness of the tobacco sheet according to the present embodiment is preferably, but not limited to, in the range of 20 to 2000 ⁇ m, more preferably 100 to 1500 ⁇ m, still more preferably 100 to 1000 ⁇ m, in one embodiment.
  • the tobacco sheet according to the present embodiment preferably has a tensile stress of 1.7 N/mm or more, more preferably 2 N/mm or more, still more preferably 3 N/mm or more.
  • the tobacco sheet according to the present embodiment preferably has an arithmetic mean surface roughness Sa of 0.03 mm or less.
  • Sa is a measure of the surface roughness, and the tobacco sheet according to the present embodiment with Sa in the above range has fewer shreds falling from the surface thereof. From this perspective, the upper limit of Sa is more preferably 0.02 mm or less.
  • a tobacco segment for use in a smoking article can be produced from a tobacco sheet.
  • the tobacco segment in the present embodiment is as described above in the first embodiment.
  • the tobacco sheet according to the present embodiment can be produced by any method, preferably a method including the following steps.
  • step 2 of spreading the mixture on a substrate to prepare a wet sheet
  • a fibrous material, an optional tobacco material, a cellulose derivative as a binder, and a medium are mixed.
  • an aerosol-generating material, an emulsifier, or a flavoring agent may also be added.
  • the amount of each component is adjusted to achieve the amount described above.
  • the medium is preferably, for example, composed mainly of water or a water-soluble organic solvent with a boiling point of less than 100° ° C., such as ethanol, and is more preferably water or ethanol.
  • the mixing method is not particularly limited, and a known device, such as a mixer or a kneader, can be used.
  • the mixture prepared by the mixing may have any solid concentration and is appropriately adjusted so as to be suitable for the step 2.
  • the upper limit of the solid concentration is preferably 98% by mass or less, 90% by mass or less, or 80% by mass or less, and the lower limit thereof is preferably 10% by mass or more, 20% by mass or more, 30% by mass or more, 40% by mass or more, or 50% by mass or more.
  • the mixture is spread on a substrate to prepare a wet sheet.
  • the substrate may be, but is not limited to, an inorganic material substrate, such as a glass sheet, a metal substrate, such as an aluminum sheet, an organic material substrate, such as a PET film or a fluoropolymer film, a fiber material substrate, such as a non-woven fabric, or the like.
  • the method for spreading the mixture on the substrate may be, but not limited to, a rolling method for pressure extension using a roller, an extrusion method for extrusion through a die, or a casting method for casting, as described later.
  • the wet sheet is dried.
  • the drying can be performed by a known method.
  • the wet sheet can be air-dried at room temperature or dried by heating.
  • the heating temperature can be, for example, but is not limited to, in the range of 60° ° C. to 150° C.
  • the dried sheet is separated from the substrate to produce a tobacco sheet.
  • a raw material for example, a single leaf
  • Fine grinding is then performed with a grinder (for example, ACM-5 manufactured by Hosokawa Micron Corporation).
  • the particle diameter (D90) after the fine grinding preferably ranges from 50 to 800 ⁇ m.
  • the particle size is measured with a laser diffraction particle size analyzer, such as Mastersizer (manufactured by malvern).
  • a binder, a fibrous material, and an optional additive agent, such as a flavoring agent or a lipid, are added to and mixed with the ground tobacco raw material (for example, tobacco particles).
  • This mixing is preferably dry blending, and a mixer is preferably used as a mixing machine.
  • a medium, such as water, and an optional aerosol-generating material, such as glycerin are then added to the dry blend and are mixed using a mixer to prepare a wet powder (a powder in a wet state).
  • the amount of the medium in the wet powder can range from 20% to 80% by mass, preferably 20% to 40% by mass, and may range from 20% to 50% by mass for pressure extension in the step 2.
  • the wet powder preferably has a solid concentration in the range of 50% to 90% by mass.
  • the wet powder is kneaded with a single-screw or multi-screw kneading machine, for example, a kneader (DG-1 manufactured by Dalton Corporation).
  • a kneader DG-1 manufactured by Dalton Corporation.
  • the kneading is preferably performed until the medium is wholly dispersed.
  • the kneading is preferably performed until the color of the mixture is visually uniform.
  • the kneaded mixture sandwiched between two substrate films is passed between a pair of rollers to a predetermined thickness (more than 100 ⁇ m) using a calender (for example, manufactured by Yuri Roll Machine Co., Ltd.) and is pressure-extended to form a laminate of a wet sheet sandwiched between the two substrate films.
  • the pressure extension using a roller can be performed multiple times.
  • the substrate film is preferably a non-adhesive film, such as a fluorinated polymer film, more specifically a Teflon (registered trademark) film.
  • One of the substrate films in the laminate is peeled off.
  • the laminate is dried with a forced-air dryer.
  • the drying temperature preferably ranges from 50° C. to 100° C., and the drying time can range from 1 to 2 minutes.
  • the remaining substrate film is then peeled off, and drying is further performed under the conditions described above to produce a tobacco sheet. Such drying can prevent the tobacco sheet from adhering to another substrate.
  • the tobacco sheet produced by this method is also referred to as a “laminated sheet”.
  • the laminated sheet is preferred because it has a smooth surface and can have fewer fallen shreds when coming into contact with another member. This method is suitable for the production of a sheet of 300 ⁇ m or less.
  • the step 1 in this method is as described above in the rolling method.
  • a wet powder (a powder in a wet state) is prepared.
  • the amount of the medium in the wet powder can be selected in the range of 20% to 80% by mass and preferably ranges from 20% to 40% by mass.
  • the wet powder is extruded through a die with a predetermined gap to form a wet sheet on a substrate.
  • a known extruder can be used for the extrusion.
  • the wet sheet is dried to produce a tobacco sheet.
  • the drying conditions are as described above in the rolling method.
  • the tobacco sheet produced by this method is also referred to as an “extruded sheet”.
  • the extruded sheet is preferred because it has a smooth surface and can have fewer fallen shreds when coming into contact with another member. This method is suitable for the production of a sheet of 200 ⁇ m or more.
  • a sheet formed by applying pressure in this manner is referred to as a “press-formed sheet”, and the “press-formed sheet” includes a “laminated sheet” and an “extruded sheet”.
  • the laminated sheet is a sheet produced by pressure-extending the mixture one or more times to a target thickness using a roller and then drying the mixture to a target water content.
  • the extruded sheet is a sheet produced by extruding the mixture through a T-die or the like to a target thickness and then drying the mixture to a target water content.
  • pressure extension and extrusion may be combined. For example, the mixture may be extruded and then further pressure-extended to form a sheet.
  • the step 1 in this method can be performed by any method.
  • a tobacco raw material with a desired particle size, a cellulose derivative, a medium, and an optional additive agent can be mixed using a mixer or the like to prepare a mixture.
  • the mixture prepared in this step preferably has a solid concentration in the range of approximately 3% to 15% by mass and is therefore also referred to as a slurry.
  • the slurry is cast on a substrate to form a wet sheet.
  • the casting can be performed as known in the art.
  • the wet sheet is dried to produce a tobacco sheet.
  • the drying conditions are as described above in the rolling method.
  • the tobacco sheet produced by this method is also referred to as a “cast sheet”.
  • a tobacco lamina (leaf tobacco) was dry-ground with a Hosokawa Micron ACM machine to produce a tobacco powder.
  • the tobacco powder had a cumulative 90% particle diameter (D90) of 200 ⁇ m in a volume-based particle size distribution as measured by a dry laser diffraction method using Mastersizer (trade name, manufactured by Spectris Co., Ltd., Malvern Panalytical).
  • the tobacco powder was used as a tobacco raw material to produce a tobacco sheet by the rolling method. More specifically, 77 parts by mass of the tobacco raw material, 12 parts by mass of glycerin as an aerosol generator, 1 part by mass of carboxymethyl cellulose as a shaping agent, and 10 parts by mass of fibrous pulp (a dry defibrated product of pulp manufactured by Canfor) as a fibrous material were mixed and kneaded with an extruder. The kneaded product was formed into a sheet using two pairs of metallic rolls and was dried in a hot air circulating oven at 80° C. to produce a tobacco sheet. The tobacco sheet was shredded with a shredder to a size of 0.8 mm ⁇ 9.5 mm.
  • the bulkiness of the shredded tobacco sheet was measured. More specifically, after the shredded tobacco sheet was allowed to stand in a conditioned room at 22° C. and 60% for 48 hours, the bulkiness was measured with DD-60A (trade name, manufactured by Borgwaldt KC Inc.). The measurement was performed by putting 15 g of the shredded tobacco sheet into a cylindrical vessel with an inside diameter of 60 mm and determining the volume of the tobacco sheets compressed at a load of 3 kg for 30 seconds. Table 1 shows the results. In Table 1, the bulkiness is shown by a rate of increase in bulkiness (%) with respect to the bulkiness of Comparative Example 1 described later.
  • the tobacco powder was prepared in the same manner as in Example 1.
  • the tobacco powder was used as a tobacco raw material to produce a tobacco sheet by the rolling method. More specifically, 87 parts by mass of the tobacco raw material, 12 parts by mass of glycerin as an aerosol generator, and 1 part by mass of carboxymethyl cellulose as a shaping agent were mixed and kneaded with an extruder.
  • the kneaded product was formed into a sheet using two pairs of metallic rolls and was dried in a hot air circulating oven at 80° ° C. to produce a tobacco sheet.
  • the tobacco sheet was shredded with a shredder to a size of 0.8 mm ⁇ 9.5 mm.
  • the bulkiness of the shredded tobacco sheet was measured in the same manner as in Example 1. Table 1 shows the results.
  • Table 1 shows that the tobacco sheet of Example 1, which is the tobacco sheet according to the present embodiment, had improved bulkiness as compared with the tobacco sheet without the fibrous material of Comparative Example 1. Although the tobacco sheet was produced by the rolling method in Example 1, a tobacco sheet produced by the casting method in the same manner also had improved bulkiness.
  • a tobacco leaf was ground with a grinder (ACM-5 manufactured by Hosokawa Micron Corporation) so as to have a D90 of 204 ⁇ m and a D50 of 66 ⁇ m to produce leaf tobacco particles.
  • D90 and D50 were measured with Mastersizer (manufactured by malvern).
  • the leaf tobacco particles and a binder Sunrose F20HC (cellulose ether manufactured by Nippon Paper Industries Co., Ltd.) were dry-blended using a mixer.
  • Glycerin as an aerosol-generating material and water as a medium were then added to the dry blend and were mixed using a mixer to prepare a wet powder.
  • Table A1 shows the ratio of each component.
  • the wet powder was kneaded six times at room temperature using a kneading machine (DG-1 manufactured by Dalton Corporation) to prepare a mixture.
  • DG-1 kneading machine
  • a T-die was used as a die, and the screw speed was 38.5 rpm.
  • the wet powder was sandwiched between two Teflon (registered trademark) films (Nitoflon (registered trademark) No. 900UL manufactured by Nitto Denko Corporation) and was rolled in four stages to a predetermined thickness (more than 100 ⁇ m) using a calender (manufactured by Yuri Roll Machine Co., Ltd.) to prepare a laminate 105 ⁇ m in thickness with a layered structure of film/wet sheet/film.
  • the roll gaps in the first to fourth stages were 650 ⁇ m, 330 ⁇ m, 180 ⁇ m, and 5 ⁇ m, respectively.
  • the roll gap in the fourth stage was larger than the thickness of the finally formed sheet because the sheet released from the pressure between the rollers expanded close to the final thickness.
  • Teflon (registered trademark) films was peeled off from the laminate, and the laminate was dried with a forced-air dryer at 80° C. for 1 to 2 minutes. The other film was then peeled off, and the wet sheet was dried under the same conditions to produce and evaluate a tobacco sheet according to the present invention.
  • the mass of ground tobacco leaves, glycerin, or the binder is a dry mass.
  • the mass of water is the total of the mass of water charged and the mass of water in the ground tobacco leaves, glycerin, and binder.
  • a tobacco sheet was produced and evaluated in the same manner as in Reference Example A1 except that Sunrose F30MC or Sunrose F20LC was used as the binder instead of Sunrose F20HC (cellulose ether manufactured by Nippon Paper Industries Co., Ltd.).
  • a tobacco sheet was produced and evaluated in the same manner as in Reference Example A1 except that Sunrose F30MC was used as the binder instead of Sunrose F20HC (cellulose ether manufactured by Nippon Paper Industries Co., Ltd.), the amount of Sunrose F30MC was changed as shown in Table A3, and the amount of glycerin was changed so as to be 15.5% by DB mass based on the charged mass.
  • Sunrose F30MC was used as the binder instead of Sunrose F20HC (cellulose ether manufactured by Nippon Paper Industries Co., Ltd.)
  • the amount of Sunrose F30MC was changed as shown in Table A3
  • the amount of glycerin was changed so as to be 15.5% by DB mass based on the charged mass.
  • Leaf tobacco particles with a D90 of 204 ⁇ m and a D50 of 66 ⁇ m were prepared in the same manner as in Reference Example A1.
  • the same components as in Reference Example A1 and pulp were mixed using a mixer to prepare a mixture.
  • the mixture was used to produce a tobacco sheet by the casting method in accordance with a routine method.
  • a tobacco sheet was produced by a paper-making method in accordance with a routine method. More specifically, a water-soluble component of a tobacco raw material was extracted with water, and the extraction residue, pulp, and water were mixed and beaten with a grinder. A sheet was formed with a paper machine and was dried. The extract and glycerin were added to the sheet. The tobacco sheet was evaluated in the same manner as in Reference Example A1. Table A2 shows the composition of the sheet. Table A3 shows the evaluation results of the tobacco sheets produced in these examples.
  • the tobacco sheet prepared in each example was cut to prepare shreds.
  • the shreds were packed at 70% by volume in a wrapper 22 with a length of 12 mm and a diameter of 7 mm to prepare a tobacco segment 20 A.
  • a flavor inhalation article 1 illustrated in FIG. 1 including the tobacco-containing segment was then produced.
  • a system illustrated in FIG. 2 (internal heating type) was prepared and subjected to a smoking test using a smoking machine ( 14 puffs, CIR conditions, constant heating at 350° C.). After the smoking test, the shreds were gently removed from the tobacco segment 20 A. The shreds were then packed again in the wrapper 22 at the above volume percent and were subjected to the second smoking test. The smoking test was performed 20 times in total in this manner, and the total volume of fallen shreds remaining in the wrapper 22 was measured.
  • the sheet was cut into 15 mm in width x 180 mm in length and was subjected to measurement using a tensile strength tester (Strograph E-S manufactured by Toyo Seiki Seisaku-Sho, Ltd.) under the conditions of ROADRANGE: 25 and SPEEDRANGE: 50, and the tensile strength was evaluated by tensile stress.
  • a tensile strength tester Strograph E-S manufactured by Toyo Seiki Seisaku-Sho, Ltd.
  • a tobacco leaf was ground with a grinder (ACM-5 manufactured by Hosokawa Micron Corporation) so as to have a D90 in the range of 50 to 800 ⁇ m to produce leaf tobacco particles. D90 was measured with Mastersizer (manufactured by malvern).
  • the leaf tobacco particles and a binder carboxymethyl cellulose (Sunrose F F30MC manufactured by Nippon Paper Industries Co., Ltd.) were dry-blended using a mixer.
  • Glycerin as an aerosol-generating material and water as a medium were then added to the dry blend and were mixed using a mixer to prepare a wet powder. The ratio of each component is described below.
  • the mass of ground tobacco leaves, glycerin, or the binder is a dry mass.
  • the mass of water is the total of the mass of water charged and the mass of water in the ground tobacco leaves, glycerin, and binder.
  • the wet powder was kneaded six times at room temperature using a kneading machine (DG-1 manufactured by Dalton Corporation) to prepare a mixture.
  • the die shape was a T shape (T-die), and the screw speed was 38.5 rpm.
  • the wet powder was sandwiched between two Teflon (registered trademark) films (Nitoflon (registered trademark) No. 900UL manufactured by Nitto Denko Corporation) and was rolled in four stages to a predetermined thickness (more than 100 ⁇ m) using a calender (manufactured by Yuri Roll Machine Co., Ltd.) to prepare a laminate 105 ⁇ m in thickness with a layered structure of film/wet sheet/film.
  • the roll gaps in the first to fourth stages were 650 ⁇ m, 330 ⁇ m, 180 ⁇ m, and 5 ⁇ m, respectively.
  • the roll gap in the fourth stage was larger than the thickness of the finally formed sheet because the sheet released from the pressure between the rollers expanded close to the final thickness.
  • Teflon (registered trademark) films was peeled off from the laminate, and the laminate was dried with a forced-air dryer at 80° C. for 1 to 2 minutes. The other film was then peeled off, and the wet sheet was dried under the same conditions to produce a tobacco sheet according to the present embodiment.
  • a tobacco sheet was produced and evaluated in the same manner as in Reference Example B1 except that a carboxymethyl cellulose (manufactured by Nippon Paper Industries Co., Ltd.) shown in Table B2 was used as the binder.
  • a tobacco sheet was produced and evaluated in the same manner as in Reference Example B1 except that a carboxymethyl cellulose (manufactured by Nippon Paper Industries Co., Ltd.) shown in Table B2 was used as the binder.
  • Table B3 shows the results.
  • the physical properties of the finished sheet are the physical properties of a sheet produced through drying as described above and not dried to the absolute dry state.
  • the tobacco sheet prepared in each example was cut to prepare shreds.
  • the shreds were packed at 70% by volume in a wrapper 22 with a length of 12 mm and a diameter of 7 mm to prepare a tobacco-containing segment 20 A.
  • a flavor inhalation article 1 illustrated in FIG. 1 including the tobacco-containing segment was then produced.
  • a system illustrated in FIG. 2 (internal heating type) was prepared and subjected to a smoking test using a smoking machine ( 14 puffs, CIR conditions, constant heating at 350° C.). After the smoking test, the shreds were gently removed from the tobacco segment 20 A. The shreds were then packed again in the wrapper 22 at the above volume percent and were subjected to the second smoking test. The smoking test was performed 20 times in total in this manner, and the total volume of fallen shreds remaining in the wrapper 22 was measured.
  • a non-combustion internal-heating-type smoking system was prepared under the conditions described in the volume of fallen shreds, and the smoking test was performed once under the same conditions.
  • the tobacco segment 20 A was taken out from the system.
  • a jig was brought into contact with a position of 6 mm in the longitudinal direction from the tip of the tobacco segment 20 A, and the tobacco segment 20 A was compressed in the radial direction at a constant speed.
  • the load (N) at the point in time when the jig reached a position of 3.5 mm was determined to evaluate coagulability after heating. A higher load indicates that shreds are more likely to be fastened after heating and are less likely to fall off.
  • the sheet was cut into 15 mm in width x 180 mm in length and was subjected to measurement using a tensile strength tester (Strograph E-S manufactured by Toyo Seiki Seisaku-Sho, Ltd.) under the conditions of ROADRANGE: 25 and SPEEDRANGE: 50, and the tensile strength was evaluated by tensile stress.
  • a tensile strength tester Strograph E-S manufactured by Toyo Seiki Seisaku-Sho, Ltd.
  • a tobacco sheet for a non-combustion heating-type flavor inhaler the tobacco sheet containing a fibrous material.
  • the fibrous material is at least one selected from the group consisting of fibrous pulp, a fibrous tobacco material, and fibrous synthetic cellulose.
  • the tobacco sheet for a non-combustion heating-type flavor inhaler according to any one of [1] to [10], wherein the tobacco sheet further contains an aerosol generator.
  • the aerosol generator content per 100% by mass of the tobacco sheet ranges from 5% to 50% by mass.
  • a non-combustion heating-type flavor inhaler including a tobacco-containing segment containing the tobacco sheet for a non-combustion heating-type flavor inhaler according to any one of [1] to [13].
  • a non-combustion heating-type flavor inhaling system including:

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US18/621,151 2021-10-01 2024-03-29 Tobacco sheet for non-combustion heating flavor inhaler, non-combustion heating flavor inhaler, and non-combustion heating flavor inhalation system Pending US20240268440A1 (en)

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PCT/JP2021/036386 WO2022071561A1 (ja) 2020-10-02 2021-10-01 たばこシート
PCT/JP2021/036387 WO2022071562A1 (ja) 2020-10-02 2021-10-01 たばこシート
WOPCT/JP2021/036386 2021-10-01
WOPCT/JP2021/036387 2021-10-01
JP2021-170066 2021-10-18
JP2021170066 2021-10-18
PCT/JP2022/029113 WO2023053704A1 (ja) 2021-10-01 2022-07-28 非燃焼加熱型香味吸引器用たばこシート、非燃焼加熱型香味吸引器、及び非燃焼加熱型香味吸引システム

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US18/623,051 Pending US20240245090A1 (en) 2021-10-01 2024-04-01 Tobacco sheet for non-combustion heating flavor inhaler, non-combustion heating flavor inhaler, and non-combustion heating flavor inhalation system

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EP2361516A1 (en) 2010-02-19 2011-08-31 Philip Morris Products S.A. Aerosol-generating substrate for smoking articles
JP6955691B2 (ja) * 2017-08-29 2021-10-27 日本製紙株式会社 固形状セメント混和剤
KR102758881B1 (ko) * 2017-12-21 2025-01-23 필립모리스 프로덕츠 에스.에이. 가열식 에어로졸 발생 물품에서 에어로졸 암모니아의 감소
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WO2020148902A1 (ja) * 2019-01-18 2020-07-23 日本たばこ産業株式会社 積層再構成たばこシートの製造方法
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US20240245090A1 (en) 2024-07-25
EP4410120A1 (en) 2024-08-07
KR20240067119A (ko) 2024-05-16
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